tm-271a service manual
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© 2003-10 PRINTED IN JAPANB51-8663-00 (N) 743
VHF FM TRANSCEIVER
TM-271A/271ESERVICE MANUAL
CIRCUIT DESCRIPTION ............................ 2
SEMICONDUCTOR DATA ........................ 8
COMPONENTS DESCRIPTION ................ 9
PARTS LIST ............................................. 10
EXPLODED VIEW.................................... 17
PACKING ................................................. 18
RESETTING THE TRANSCEIVER ........... 19
ADJUSTMENT ........................................ 20
TERMINAL FUNCTION ........................... 27
PC BOARD
DISPLAY UNIT (X54-3450-10) ............ 28
TX-RX UNIT (X57-685X-XX)............... 30
SCHEMATIC DIAGRAM.......................... 34
BLOCK DIAGRAM ................................... 38
LEVEL DIAGRAM .................................... 40
SPECIFICATION ................... BACK COVER
CONTENTS
Microphone(T91-0624-05)
Cabinet(A01-2193-01)
Panel assy(A62-1088-03)
Knob (Encoder)(K29-9293-03)
Knob (Volume)(K29-9292-03)
Key top(K29-9291-01)
Microphone(T91-0641-05)
Cabinet(A01-2193-01)
Panel assy(A62-1088-03)
Knob (Encoder)(K29-9293-03)
Knob (Volume)(K29-9292-03)
Key top(K29-9291-01)
TM-271A (M2,M4)
TM-271A/E (K,M3,E)
TM-271A/271E
2
Frequency ConfigurationThe receiver utilizes double conversion. The first IF is
49.95MHz and the second IF is 450kHz. The first local oscil-lator signal is supplied from the PLL circuit.
The PLL circuit in the transmitter generates the necessaryfrequencies. Figure 1 shows the frequencies.
CIRCUIT DESCRIPTION
Receiver SystemThe receiver is double conversion superheterodyne. The
frequency configuration is shown in Figure 1.
Front-end RF AmplifierAn incoming signal from the antenna is applied to an RF
amplifier (Q353) after passing through a transmit/receiveswitch circuit (D603, D605 are off) and a band pass filter(L357, L356 and varactor diodes : D353, D354). After thesignal is amplified (Q353), the signal is filtered through a bandpass filter (L354, L355 and varactor diodes: D351, D352) toeliminate unwanted signals before it is passed to the firstmixer.
The voltage of these diodes are controlled by tracking theCPU (IC101) center frequency of the band pass filter. (SeeFig. 2.)
First MixerThe signal from the RF amplifier is heterodyned with the
first local oscillator signal from the PLL frequency synthesizercircuit at the first mixer (Q352) to create a 49.95MHz firstintermediate frequency (1st IF) signal. The first IF signal isthen fed through one pair of monolithic crystal filter (MCF :XF351) to further remove spurious signals.
ANTSW
RFAMP
1stMIX
AFPA
TCXO
MICAMP
X3multiply
RFAMP
POWERAMP
CF 450kHz
MCF49.95MHz
IF SYSTEM
PLL/VCO
16.8MHz
50.4MHz
ANT
RX
TX
SP
MIC1/2
Fig. 1 Frequency configuration
IF AmplifierThe first IF signal is amplified by Q351, and then goes to
IC301 (FM processing IC). The signal is heterodyned againwith a second local oscillator signal within IC301 to create a450kHz second IF signal. The second IF signal is then fedthrough a 450kHz ceramic filter (Wide : CF301, Narrow :CF302) to further eliminate unwanted signals before it is am-plified and FM detected in IC301.
Item Rating
Nominal center frequency 49.95MHz
Pass bandwidth ±5.0kHz or more at 3dB
35dB stop bandwidth ±20.0kHz or less
Ripple 1.0dB or less
Insertion loss 5.0dB or less
Guaranteed attenuation 80dB or more at fo±1MHz
Spurious 40dB or more
Terminal impedance 350Ω / 5.5pF
Table 1 Crystal filter (L71-0620-05) : XF351
Item Rating
Nominal center frequency 450kHz
6dB bandwidth ±6.0kHz or more
50dB bandwidth ±12.5kHz or less
Ripple 2.0dB or less
Insertion loss 6.0dB or less
Guaranteed attenuation 35.0dB or more within fo±100kHz
Terminal impedance 2.0kΩ
Table 2 Ceramic filter (L72-0993-05) : CF301
Item Rating
Nominal center frequency 450kHz
6dB bandwidth ±4.5kHz or more
50dB bandwidth ±10.0kHz or less
Ripple 2.0dB or less
Insertion loss 6.0dB or less
Guaranteed attenuation 60.0dB or more within fo±100kHz
Terminal impedance 2.0kΩ
Table 3 Ceramic filter (L72-0999-05) : CF302
ANTL357,356D353,354
BPFQ353
RF AMPQ351
IF AMPIC161
D/A CONVERTERQ352MIX
XF351MCF
D602D603D605ANTSW
IC161D/A
IC203DC AMP
Q302X3 multiply
IC4021/2 divider
X401TCXO
IC301IF system
1st local OSC (VCO/PLL)
W/NO(EVOL2)
CF301 (Wide)
CF302 (Narrow)
TV
CPU
L354,355D351,352
BPF
Fig. 2 Receiver system
TM-271A/271E
3
Wide/Narrow Switching CircuitThe Wide port (pin 65) and Narrow port (pin 64) of the CPU
is used to switch between ceramic filters. When the Wideport is high, the ceramic filter SW diodes (D303, D302) causeCF301 to turn on to receive a Wide signal.
When the Narrow port is high, the ceramic filter SW di-odes (D303, D302) cause CF302 to turn on to receive a Nar-row signal. (See Fig. 3.)
AF Signal SystemThe detection signal from IF IC (IC301) goes to D/A con-
verter (IC161) to adjust the gain and is output to AF filter(IC251) for characterizing the signal. The AF signal outputfrom IC251 and the DTMF signal, BEEP signal are summedand the resulting signal goes to the D/A converter (IC161).The AFO output level is adjusted by the D/A converter. Thesignal output from the D/A converter is input to the audiopower amplifier (IC252). The AF signal from IC252 switchesbetween the internal speaker and speaker jack (J1) output.(See Fig. 4.)
Squelch CircuitThe detection output from the FM IF IC (IC301) passes
through a noise amplifier (Q301) to detect noise. A voltage isapplied to the CPU (IC101). The CPU controls squelch ac-cording to the voltage (SQIN) level. The signal from the RSSIpin of IC301 is used for S-meter. The electric field strength ofthe receive signal can be known before the SQIN voltage isinput to the CPU, and the scan stop speed is improved.
NarrowIC101 64pin
IF_IN MIX_O
IC301IF System
CF302(Narrow)
CF301(Wide)
R32
0
R31
9
R317
R318
D303 D302
WideIC101 65pin
AFFilter
D/ACONV.
D/ACONV.
IC161 IC251 IC161W/NO(EVOL2)
AF PA
IC252 SP
IF IC
IC301
Q301NOISE AMP D301IC301 IC101
AFO
RSSI
DETCPUIF
SYSTEM
SQIN
RSSI
Fig. 3 Wide/Narrow switching circuit
Fig. 4 AF signal system
Fig. 5 Squelch circuit
PLL Frequency SynthesizerThe PLL circuit generates the first local oscillator signal for
reception and the RF signal for transmission.
PLLThe frequency step of the PLL circuit is 5 or 6.25kHz. A
16.8MHz reference oscillator signal is divided at IC401 by afixed counter to produce the 5 or 6.25kHz reference fre-quency. The voltage controlled oscillator (VCO) output signalis buffer amplified by Q410, then divided in IC401 by a dual-module programmable counter. The divided signal is com-pared in phase with the 5 or 6.25kHz reference signal in thephase comparator in IC401. The output signal from thephase comparator is filtered through a low-pass filter andpassed to the VCO to control the oscillator frequency. (SeeFig. 6.)
VCOThe operating frequency is generated by Q406 in transmit
mode and Q405 in receive mode. The oscillator frequency iscontrolled by applying the VCO control voltage, obtainedfrom the phase comparator, to the varactor diodes (D405 andD406 in transmit mode and D403 and D404 in receive mode).The TX/RX pin is set high in receive mode causing Q408 andQ407 to turn Q406 off, and turn Q405 on. The TX/RX pin isset low in transmit mode. The outputs from Q405 and Q406are amplified by Q410 and sent to the RF amplifiers. (See Fig.6.)
D405,406
Q406TX VCO
Q410BUFFAMP
D403,404
Q405RX VCO
Q407,408T/R SW
Chargepump
LPF
Phasecomparator
1/M
1/N5kHz/6.25kHz
5kHz/6.25kHz
REFOSC
16.8MHz
PLLDATA
IC401 : PLL ICQ404AMP
RF amplifiers
Q402,403
TX/RX (CPU)
Fig. 6 PLL circuit
CIRCUIT DESCRIPTION
TM-271A/271E
4
Unlock CircuitDuring reception, the 8RC signal goes high, the 8TC signal
goes low, and Q34 turns on. Q33 turns on and a voltage isapplied to 8R. During transmission, the 8RC signal goes low,the 8TC signal goes high and Q36 turns on. Q35 turns on anda voltage is applied to 8T.
The CPU monitors the PLL (IC401) LD signal directly.When the PLL is unlocked during transmission, the PLL LDsignal goes low. The CPU detects this signal and makes the8TC signal low. When the 8TC signal goes low, no voltage isapplied to 8T, and no signal is transmitted. (See Fig. 7.)
IC101CPU
Q34SW
Q33SW
IC401PLL
Q36SW
Q35SW
LD
8RC
8C
8R 8T
8TC
PLL lock: LD “H”
Fig. 7 Unlock circuit
Transmitter System
OutlineThe transmitter circuit produces and amplifies the desired
frequency directly. It FM-modulates the carrier signal bymeans of a varicap diode.
Power Amplifier CircuitThe transmit output signal from the VCO passes through
the transmission/reception selection diode (D409) and ampli-fied by Q501, Q502 and Q503. The amplified signal goes tothe final amplifier (Q504) through a low-pass filter. The low-pass filter removes unwanted high-frequency harmonic com-ponents, and the resulting signal is transmitted through theantenna terminal. (See Fig. 8.)
APC CircuitThe automatic transmission power control (APC) circuit
detects part of a final amplifier output with a diode (D606,D607) and applies a voltage to IC501. IC501 compares theAPC control voltage (PC) generated by the D/A converter(IC161) and DC amplifier (IC203) with the detection outputvoltage. IC501 generates the voltage to control Q503 andQ504 and stabilizes transmission output.
The APC circuit is configured to protect over current ofQ503 and Q504 due to fluctuations of the load at the antennaend and to stabilize transmission output at voltage and tem-perature variations. (See Fig. 9.)
RFAMP
Q501
DRIVEAMP
Q503
FINALAMP
Q504PRE
DRIVEAMP
Q502
DCAMP
IC203
ANTSW
D602,D603D605
LPF
ANT
POWERDET
D606D607IC501
VR601APC
CONTROL
D409
IC161(PC/TVO)
(PC)
Q411
RF AMP
Q501
RF AMP
Q502
PREDRIVE AMP
Q503
ANT
DRIVEAMP
Q504
FINALAMP
IC402
1/2DIVIDER
IC161 Q406
D/A CONVERTER
D/A CONVERTER
D/A CONVERTER
X401
TCXO16.8MHz
VCO
IC401
PLL
Q410
BUFFER
Q404
RF AMP
IC203
BUFFER
IC101
IC161
MIC KEYINPUT CPU
IC161
IC203
SUMAMP
IC202IC201MIC
MIC/IDC SPLATTERFILTER
Fig. 9 APC circuit
Fig. 8 Transmitter system
CIRCUIT DESCRIPTION
TM-271A/271E
5
Control CircuitThe CPU carries out the following tasks (See Fig. 10.):
1) Controls the WIDE, NARROW, TX/RX outputs.2) Adjusts the AF signal level of the AF filter (IC251) and
turns the filter select compounder on or off.3) Controls the display unit.4) Controls the PLL (IC401).5) Controls the D/A converter (IC161) and adjusts the vol-
ume, modulation and transmission power.
Memory CircuitThe transceiver has an 64k-bit EEPROM (IC66). The
EEPROM contains adjustment data. The CPU (IC101) con-trols the EEPROM through three serial data lines. (See Fig.11.)
IC161D/A
converter
IC401PLL
IC101CPU
LDDTCK
PLLE
EEPCK
IC101CPU
IC66EEPROM
EEPSDT
EEPWP
Display CircuitThe CPU (IC101) controls the display LCD and LEDs.
When power is on, the LCD driver will use the BL line to con-trol the LCD illumination and key backlight LEDs.
The brightness function is controlled by the switch Q12.The LCD driver (IC3) and CPU (IC101) communicate throughthe CE, CL, DI, DO lines. (See Fig. 12.)
Key Matrix CircuitThe TM-271 front panel has function keys. Each of them
is connected to a cross point of a matrix of the KI1 to KI3 andKSI to KS2 ports of the LCD driver.
The LCD driver monitors the status of the KI1 to KI3 andKS1 to KS2 ports. If the state of one of the ports changes,the LCD driver assumes that the key at the matrix point corre-sponding to that port has been pressed.
EncodeThe DCS and CTCSS signals are output from QT/DQT of
the CPU (IC101) and summed with the external pin DI line bythe summing amplifier (IC203) and the resulting signal goesto the D/A converter (IC161). The DTMF signal is output fromDTMF pin of the CPU and summed with a MIC signal by thesumming amplifier (IC203), and the resulting signal goes tothe D/A converter (IC161).
The D/A converter (IC161) adjusts the MOD level and thebalance between the MOD and CTCSS/DCS levels. Part of aCTCSS/DCS signal is summed with MOD and the resultingsignal goes to the VCOMOD pin of the VCO. This signal isapplied to a varicap diode in the VCO for direct FM modula-tion.
IC3LCD
driver
KI1KI2KI3
KS2KS1
FUNC
REV
CALL
VFO
MRMHz(Encoder)
X401TCXO
IC161D/A VCO
IC203SUMAMP
IC203SUMAMP
IC401PLL
TCXOMOD
VCOMOD
Amp
DI
QT/DQT(CPU1)
DTMO(EVOL15)
IC101CPU
TONE
DTMF
Fig. 10 Control circuit
Fig. 11 Memory circuit
Q10SW
Q6SW
IC101CPU
D2~D4
Q9SW
D19~D30
Q12SW
IC3LCD
driver
CECLDI
DOBL
COM0~COM3SEG0~SEG30
LCD
BRI
Fig. 12 Display circuit
Fig. 13 Key matrix circuit
Fig. 14 Encoder
CIRCUIT DESCRIPTION
TM-271A/271E
6
Decode
• CTCSS/DCSThe signal (W/NO (EVOL2)) goes to DTMF IN (pin 95) of
CPU (IC101). The CTCSS/DCS signal will pass through thelow-pass filters in the CPU (IC101) and be decoded within theCPU (IC101). The DTMF signal will be decoded within theCPU (IC101).
D/A ConverterThe D/A converter (IC161) is used to adjust MO modula-
tion, AF volume, TV voltage, FC reference voltage, and PCPOWER CONTROL voltage level.
Adjustment values are sent from the CPU as serial data.The D/A converter has a resolution of 256 and the followingrelationship is valid:
D/A output = (Vin – VDAref) / 256 x n + VDArefVin: Analog inputVDAref: D/A reference voltagen: Serial data value from the microprocessor (CPU)
Power Supply CircuitWhen the power switch on the display unit is pressed, the
power port on the display unit which is connected port 17(POWER), goes low, then port 82 (SBC) goes high, Q32 turnson, SB SW (Q31) turns on and power (SB) is supplied to theradio.
When the DC power supplied to the radio, the voltageregulator IC (IC33) supply into the CPU VDD and reset voltagedetect IC (IC34). IC34 will generate signal (RESET) in to thereset terminal on the CPU (IC101) to carry out a power ONreset. If DC power is less than about 9.5V, the radio is unableto power on.
When the DC power voltage deceases from normal volt-age, the INT voltage detector IC (IC35) will set to high on CPUport 18 (INT) if B line will became less than about 9.5V. ThenCPU send to EEPROM (IC66) the backup data and go intoSTOP mode.
This circuit has an overvoltage protection circuit. If a DCvoltage of 18V or higher is applied to the base of Q61, thisvoltage turns Q61 on and will set to high on CPU port 18(INT). Then CPU send to EEPROM (IC66) the backup dataand go into stop mode. (See Fig. 16.)
IC101CPU
DTMF IN W/NO (EVOL2)95
Q71SW
Q31SW
Q32SW
Q61SW
IC33AVR
D61D62
B
IC34RST
SBC
IGN
R77
R76
R39
R40
INT
5MBATT
IC101CPU
POWERSW
POWER
RE
SE
T
5M
IC35INT
SB
IGN
Fig. 15 Decode
Fig. 16 Power supply circuit
CIRCUIT DESCRIPTION
Data Terminal and Peripheral CircuitsCN2 (data terminal) is the data communications terminal
on the TX/RX PCB. It handles transmission control, data in-put/output, and squelch signals.
There are two data communications modes : 9600bpsmode and 1200bps mode. Unlike with 1200bps AFSK, withthis type of high-speed modulation, frequency modulation iscarried out after the digital base band signals (rectangularwave) are passed through a band limiting filter. For 9600bpsGMSK for example, compared to 4800Hz signals (nearly sinewave signals passed through a filter), these signals have ahissing sound like digital modulation when listened to by ear.Different types of modulation, such as GMSK is distin-guished by the type of band limiting filter.
Pin Pin Specification
No. Name
1 PKD bps switching 1200bps 9600bps
Modulation input 400mVp-p 4Vp-p
Frequency shift 3±0.5kHz 2.2±0.5kHz
4 PR9 Output level 500mVp-p/10kΩ
Always output during reception
5 PR1 Output level 500mVp-p/10kΩ
Not output when squelch off
Table 4 Data terminal input/output level
TM-271A/271E
7
Transmission SignalsTransmission modulation signals enter from PKD of the
data terminal (CN2). The path to the modulation depends onwhether communications are 1200bps or 9600bps mode.
For 1200bps mode, the transmission modulation signalsfrom single analog switch (IC204) pass through MIC amplifier(IC201,202) and summing amplifier (IC203), and go to VCO(X401) through D/A converter (IC161).
For 9600bps mode, the transmission modulation signalsfrom single analog switch (IC205) pass through summingamplifier (IC303), go to TCXO (X401) and VCO through D/Aconverter (IC161). (See Fig. 17.)
Reception SignalsPR9 is the 9600bps data communications reception out-
put. It outputs the FM detection circuit output through an AFfilter (IC251). These signals are always output whether thesquelch is open or closed.
PR1 is the 1200bps data communications reception out-put. It outputs the FM detection circuit output through an AFfilter (IC251). Output is controlled with the mute switch(Q252) according to whether squelch is open or closed. (SeeFig. 17.)
Squelch Signal Output CircuitThe squelch circuits is input to the TNC to prevents con-
flicts from occurring between simultaneous receive modeand transmit mode traffic during packet communications(only during 1200bps). The signal is output from pin 29 ofIC101 to the data terminal. The logic is as shown in the tablebelow.
SQC terminal output L : SQ CLOSE
CN2 H : SQ BUSY
IC204Analogswitch
IC201,202MIC amp
IC203Sum amp
IC205Analogswitch
IC251AF filter
7675
IC101CPU
1200bps
9600bpsVCO, TCXO, D/A converter
D/A converterQ252
Mute SWD6
D5
PKS (CPU) pin 30
SQC (CPU) pin 29
PKD
PR9
PR1
PKS
SQC
CN2
CIRCUIT DESCRIPTION
Fog. 17 Data terminal and peripheral circuits
TM-271A/271E
8
SEMICONDUCTOR DATA
Terminal Function
Pin No. Name I/O Function
1 TONE O CTCSS/DCS/Clone output
2 DTMF O DTMF/BEEP/1750Hz output
3 PLLE O PLL IC chip select
4,5 NC I
6 GND - GND.
7 CNVSS -
8 EVLLD O
9 BSHIFT O Beat shift
10 RESET - Reset
11 XOUT - X’tal (8MHz)
12 VSS - GND
13 XIN - X’tal (8MHz)
14 VCC - +5V
15 NMI - (Input only)
16 NC I
17 POWER I Power key input
18 INT I µcom stop
19 NC I
20 TX/RX O TX/RX
21 UL I PLL unlock detect
22,23 NC I
24 EEPSDT I/O EEPROM data
25 EEPCK O EEPROM clock
26 EEPWP O EEPROM write protect
27,28 NC I (Nch open drain)
29 SQC O Squelch signal output for TNC
(TxD for flash)
30 PKS I PTT input for TNC (RxD for flash)
31 CLKFLS I (GND)
32 BSYFLS O (Vcc)
33 TXD O To PC
34 RXD I From PC
35 PTT I PTT input
36~38 NC I
39 EMPFLS I/O (GND)
40~43 NC I
44 CEFLS I/O (Vcc)
45~49 NC I
50 AFM O AF mute
51 SPM O Speaker mute
52 AMPSW O AF AMP switch
Pin No. Name I/O Function
53 DT O Common data
54 CK O Common clock
55 NC I
56 DST1 I Destination 1
57~59 DST2~DST4 I Destination 2~4
60 VCC - +5V
61 NC I
62 VSS - GND
63 ADJ I For adjustment mode
64 NARROW O Wide/Narrow 2
65 WIDE O Wide/Narow
66,67 NC I
68 LCDCL O Clock for LCD
69 LCDCE O Chip enable for LCD
70 LCDDO O Output data to LCD
71 LCDDI I Input data from LCD
72 NC I
73 ENCB I Encoder input B
74 ENCA I Encoder input A
75 TNC9600 O TNC speed H : 9600, L : 1200
76 TNC1200 O TNC speed L : 9600, H : 1200
77 MICMT O MIC mute
78 NC I NC
79 8RC O 8R control
80 8TC O 8T control
81 NC I
82 SBC O Battery switch
83~85 NC I
86 CM I/O MIC key check
87 I For AMR DTMF keypad MIC
88 I For AMR DTMF keypad MIC
89 VOL I Volume encoder
90 TEMP2 I Temperature 2
91 TEMP1 I Temperature 1
92 RSSI I RSSI input
93 SQIN I Squelch input
94 AVSS - GND
95 DTMF IN I CTCSS/DCS/Clone/1050Hz input
96 VREF - +5V
97 AVCC - +5V
98~100 NC I
Microprocessor : 30622MAA-B85GP (TX-RX Unit IC101)
TM-271A/271E
9
Display Unit (X54-3450-10)
Ref. No. Parts name Description
IC3 IC LCD controller
Q6 Transistor DC switch
Q9 Transistor LCD backlit switch
Q10 Transistor Key backlit switch
Q12 Transistor Brightness function switch
D2~4 LED Key backlit
D19~30 LED LCD backlit
D31 Diode Reverse connection protection
TX-RX Unit (X57-685X-XX)
Ref. No. Parts name Description
IC31 IC Voltage regulator (8C)
IC32 IC Voltage regulator (5C)
IC33 IC Voltage regulator (5M)
IC34 IC Voltage detector (reset)
IC35 IC Voltage detector (int)
IC66 IC EEPROM
IC101 IC CPU
IC161 IC Digital potentiometer
IC201 IC MIC amplifier / IDC
IC202 IC MIC amplifier / Splatter filter
IC203 IC Buffer amplifier / SUM amplifier
/ DC amplifier / 1/2 Vcc
IC204,205 IC Single analog switch
IC251 IC Audio filter
IC252 IC Audio amplifier
IC301 IC FM demodulation
IC401 IC PLL synthesizer
IC402 IC Divider (Hetero)
IC501 IC APC controller
Q31,32 Transistor DC switch (SB) / Active when power is on
Q33,34 Transistor DC switch (8R) / Active while RX
Q35,36 Transistor DC switch (8T) / Active while TX
Q61 Transistor Over voltage detection / Active when
PS voltage is more than 18V
Q86,87 Transistor Beat shift / Active while beat shift is on
Q201 Transistor AGC / MIC mute
Q251 Transistor Buffer amplifier / RX audio
Q252,253 FET AF mute / Active while AFM is H
Q254 Digital transistor AF mute / Active while SPM is H
Q255 Transistor AF mute / Active while AMPSW is H
Q301 Transistor Noise amplifier / SQL amplifier
Ref. No. Parts name Description
Q302 Transistor Buffer amplifier / 16.8MHz 3rd over tone
Q351 Transistor IF amplifier
Q352 FET Mixer
Q353 FET RF amplifier / LNA
Q354 Transistor PC/TV switch
Q402,403 Transistor Charge pump
Q404 Transistor RF amplifier / PLL F in
Q405 FET RX VCO
Q406 FET TX VCO
Q407 FET T/R switch
Q408 Transistor T/R switch
Q410 Transistor Buffer amplifier / Output of VCO
Q411 Transistor RF amplifier / Output of VCO
Q440 Transistor Lipple filter
Q501,502 Transistor RF amplifier / Drive stage
Q503 FET RF amplifier / Drive amplifier
Q504 FET RF amplifier / Final amplifier
D1 Diode Surge absorption / CM
D2 Diode Surge absorption / MIC key
D3 Diode Surge absorption / RXD
D4 Diode Surge absorption / PTT
D5 Diode Surge absorption / SQC
D6 Diode Surge absorption / PKS
D31 Diode Reverse connection protection
D32 Poly switch Current protection
D61,62 Diode Over voltage detection
D201 Diode OR gate / MIC mute, AGC
D202 Diode AGC
D251 Diode Limiter
D301 Diode Detection
D302,303 Diode IF switch (Wide/Narrow)
D351~354 Varicap RF BPF tuning
D401 Diode Ripple filter
D402 Diode Voltage dropped
D403,404 Varicap RX VCO
D405,406 Varicap TX VCO
D407 Varicap Modulation
D408 Diode Lipple filter
D409 Diode RF switch (TX/RX)
D501,502 Diode Temperature compensation
D503 Diode Voltage protection
D602,603 Diode ANT switch
D605 Diode ANT switch
D606,607 Diode APC voltage detect
D608 Diode Temperature compensation
COMPONENTS DESCRIPTION
TM-271A/271E
10
PARTS LIST New Parts. indicates safety critical components.Parts without Parts No. are not supplied.Les articles non mentionnes dans le Parts No. ne sont pas fournis.Teile ohne Parts No. werden nicht geliefert.
L : Scandinavia K : USA P : CanadaY : PX (Far East, Hawaii) T : England E : EuropeY : AAFES (Europe) X : Australia M : Other Areas
K,M2,M3,M4 : TM-271A
E : TM-271E
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
TM-271A/E
DISPLAY UNIT (X54-3450-10)
1 1B A01-2193-01 CABINET2 3B A10-4048-21 CHASSIS3 3A A62-1088-03 PANEL ASSY
5 1D B62-1738-10 INSTRUCTION MANUAL K,M2,M35 1D B62-1738-10 INSTRUCTION MANUAL E5 1D B62-1739-10 INSTRUCTION MANUAL K,M2,E5 1D B62-1745-10 INSTRUCTION MANUAL M35 1D B62-1746-10 INSTRUCTION MANUAL M4
5 1D B62-1784-10 INSTRUCTION MANUAL E6 3B B72-2171-04 MODEL NAME PLATE K6 3B B72-2172-04 MODEL NAME PLATE M26 3B B72-2173-04 MODEL NAME PLATE M36 3B B72-2174-04 MODEL NAME PLATE M4
6 3B B72-2175-04 MODEL NAME PLATE E
8 3B E04-0167-05 RF COAXIAL PECEPTACLE (M) K,M2,M38 3B E04-0167-05 RF COAXIAL PECEPTACLE (M) M49 3B E04-0170-05 RF COAXIAL RECEPTACLE (N) E10 3C E30-2111-15 DC CORD ACCESSORY K,M2,M310 3C E30-2111-15 DC CORD ACCESSORY M4
11 3C E30-3452-05 DC CORD ACCESSORY E12 2B E30-7501-05 TNC CABLE E13 2B E30-7512-05 DC CORD (RADIO) K,M2,M313 2B E30-7512-05 DC CORD (RADIO) M414 2B E30-7513-05 DC CORD (RADIO) E
15 3A E37-1082-05 SPEAKER WIRE16 2A E37-1097-05 FLAT CABLE
17 3C F51-0024-05 FUSE (BLADE) (15A/32V) E18 2B F10-2449-01 SHIELDING COVER20 3C F51-0017-05 FUSE (630) (15A) K,M2,M320 3C F51-0017-05 FUSE (630) (15A) M4
23 2B G02-0894-04 EARTH SPRING (FINAL FET)24 2A G10-1324-04 FIBROUS SHEET (DISPLAY UNIT)25 3B G11-4127-14 RUBBER SHEET (CHASSIS)26 2B G11-4240-04 RUBBER SHEET (DRIVE FET)27 3B G13-1468-04 CUSHION (CHASSIS) K,M2,M3
27 3B G13-1468-04 CUSHION (CHASSIS) M428 3A G53-1525-03 PACKING (PANEL)29 2B G53-1542-03 PACKING (PHONE JACK)30 1B G53-1544-01 PACKING (SHIELDING COVER)31 1A G53-1548-02 GASKET
33 2C,1D H12-3112-05 PACKING FIXTURE34 3D H13-1190-02 CARTON BOARD36 1D H25-2341-04 PROTECTION BAG37 2D H52-1995-12 ITEM CARTON CASE K,M237 2D H52-2027-02 ITEM CARTON CASE M3
37 2D H52-2028-02 ITEM CARTON CASE M437 2D H52-2029-12 ITEM CARTON CASE E
39 3C J19-1584-05 MIC HOLDER ACCESSORY40 3D J29-0662-03 BRACKET ACCESSORY
42 3A K29-9291-01 KEY TOP43 3A K29-9292-03 KNOB (VOLUME)
44 3A K29-9293-03 KNOB (ENCODER)
A 2B N67-2608-46 PAN HEAD SEMS SCREWB 2A N80-2010-45 PAN HEAD TAPTITE SCREWC 2B,3B N87-2606-46 BRAZIER HEAD TAPTITE SCREWD 1B,2B N87-2614-46 BRAZIER HEAD TAPTITE SCREW46 3D N99-0395-05 SCREW SET ACCESSORY
48 3A T07-0739-05 SPEAKER49 2C T91-0624-05 MICROPHONE ACCESSORY M2,M450 2C T91-0641-05 MICROPHONE ACCESSORY K,M3,E
101 2A B11-1809-03 ILLUMINATION GUIDE (LCD)102 2A B38-0885-05 LCDD2-4 B30-2205-05 LED (YG)D19-30 B30-2205-05 LED (YG)
C4 CC73GCH1H101J CHIP C 100PF JC15,16 CC73GCH1H101J CHIP C 100PF JC19 CK73GB1H681K CHIP C 680PF KC22 CK73GB1H102K CHIP C 1000PF KC24 CK73GB1C104K CHIP C 0.10UF K
C25 CK73GB1H102K CHIP C 1000PF KC27 CK73GB1H102K CHIP C 1000PF KC30 CK73GB1C104K CHIP C 0.10UF KC31-33 CK73GB1H102K CHIP C 1000PF KC34,35 CK73GB1H472K CHIP C 4700PF K
C36 CK73GB0J105K CHIP C 1.0UF KC38 CK73GB1H471K CHIP C 470PF KC39,40 CK73GB1C104K CHIP C 0.10UF K
103 2A E29-1201-04 INTER CONNECTOR (LCD)CN1 E40-6005-05 FLAT CABLE CONNECTORJ1 E08-0877-05 MODULAR JACK
104 2A J21-8463-03 HARDWARE FIXTURE (LCD)
L1 L92-0138-05 FERRITE CHIP
CP1 R90-0724-05 MULTI-COMP 1K X4R8 RK73GB1J102J CHIP R 1.0K J 1/16WR10 RK73GB1J122J CHIP R 1.2K J 1/16WR21-23 RK73GB1J103J CHIP R 10K J 1/16WR25 RK73GB1J563J CHIP R 56K J 1/16W
R26 RK73GB1J392J CHIP R 3.9K J 1/16WR41 RK73FB2A560J CHIP R 56 J 1/10WR42 RK73GB1J272J CHIP R 2.7K J 1/16WR43 RK73GB1J821J CHIP R 820 J 1/16WR44 RK73GB1J183J CHIP R 18K J 1/16W
R45 RK73GB1J333J CHIP R 33K J 1/16WR46 RK73GB1J101J CHIP R 100 J 1/16WR47,48 RK73GB1J473J CHIP R 47K J 1/16WR49,50 RK73FB2A560J CHIP R 56 J 1/10WR51-53 R92-1252-05 CHIP R 0 OHM J 1/16W
R54 RK73FB2A560J CHIP R 56 J 1/10W
DISPLAY UNIT (X54-3450-10)
TM-271A/E
TM-271A/271E
11K,M2,M3,M4 : TM-271A
E : TM-271E
PARTS LIST
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
DISPLAY UNIT (X54-3450-10)
TX-RX UNIT (X57-685X-XX)
R55 R92-1252-05 CHIP R 0 OHM J 1/16WVR1 R31-0646-05 VARIABLE RESISTOR
D31 1SS355 DIODEIC3 LC75854W MOS ICIC3 PT6554LQ MOS ICQ6 KRC102S DIGITAL TRANSISTORQ9 2SB1132(Q,R) TRANSISTOR
Q10 KRA225S DIGITAL TRANSISTORQ12 UMG3N TRANSISTORS1 W02-3665-05 ENCODER
C10 CK73GB1H102K CHIP C 1000PF KC13-20 CK73GB1H471K CHIP C 470PF KC28 CK73GB1H221K CHIP C 220PF KC29 CK73GB1H471K CHIP C 470PF KC30 CK73GB1H102K CHIP C 1000PF K
C33 CK73GB1H102K CHIP C 1000PF KC34 CE04EQ1E331M ELECTRO 330UF 25WVC35-38 CK73GB1H102K CHIP C 1000PF KC39,40 CK73GB1C104K CHIP C 0.10UF KC41 C92-0795-05 CHIP-TAN 22UF 10WV
C42 CK73GB1H103K CHIP C 0.010UF KC43-45 C92-0795-05 CHIP-TAN 22UF 10WVC49,50 CK73GB1H103K CHIP C 0.010UF KC51 C92-0589-05 CHIP-TAN 47UF 6.3WVC52,53 CK73GB1H102K CHIP C 1000PF K
C54,55 CK73GB1C104K CHIP C 0.10UF KC56 CK73GB1H102K CHIP C 1000PF KC61 CK73GB1H102K CHIP C 1000PF KC66 CK73GB1H102K CHIP C 1000PF KC82 CK73GB1H102K CHIP C 1000PF K
C83 CK73GB1C104K CHIP C 0.10UF KC87 CC73GCH1H030C CHIP C 3.0PF CC88,89 CC73GCH1H040C CHIP C 4.0PF CC90 CC73GCH1H030C CHIP C 3.0PF CC97,98 CK73GB1H102K CHIP C 1000PF K
C101 CK73GB1H102K CHIP C 1000PF KC102 CK73GB1C104K CHIP C 0.10UF KC104 CK73GB1C104K CHIP C 0.10UF KC128 CK73GB1H102K CHIP C 1000PF KC151 CK73GB1H182K CHIP C 1800PF K
C152 CK73GB1H392K CHIP C 3900PF KC161 CK73GB1H102K CHIP C 1000PF KC162 C92-0507-05 CHIP-TAN 4.7UF 6.3WVC163 CK73GB1H102K CHIP C 1000PF KC164 C92-0560-05 CHIP-TAN 10UF 6.3WV
C165 CK73GB1A105K CHIP C 1.0UF KC201 CK73GB1C104K CHIP C 0.10UF KC202 CK73GB1H102K CHIP C 1000PF KC203 CK73GB1C273K CHIP C 0.027UF K K,M2,M3C203 CK73GB1C273K CHIP C 0.027UF K M4
C203 CK73GB1C473K CHIP C 0.047UF K EC204 C92-0514-05 CHIP-TAN 2.2UF 10WVC205 CK73GB1C104K CHIP C 0.10UF KC206 CK73GB1H102K CHIP C 1000PF K K,M2,M3C206 CK73GB1H102K CHIP C 1000PF K M4
C206 CK73GB1H681K CHIP C 680PF K EC207 CK73GB1C223K CHIP C 0.022UF K K,M2,M3C207 CK73GB1C223K CHIP C 0.022UF K M4C207 CK73GB1C393K CHIP C 0.039UF K EC208 CK73GB1H103K CHIP C 0.010UF K
C209 CC73GCH1H680J CHIP C 68PF JC210 CK73GB1C104K CHIP C 0.10UF KC211 CK73GB1H821K CHIP C 820PF KC212 CK73GB1H122K CHIP C 1200PF KC213 CK73GB1H332K CHIP C 3300PF K
C214 CC73GCH1H151J CHIP C 150PF JC215 CK73GB1C104K CHIP C 0.10UF KC216 CC73GCH1H390J CHIP C 39PF JC217,218 C92-0560-05 CHIP-TAN 10UF 6.3WVC220 C92-0507-05 CHIP-TAN 4.7UF 6.3WV
C222 CK73GB1C104K CHIP C 0.10UF KC225 C92-0004-05 CHIP-TAN 1.0UF 16WVC226 CK73GB1H472K CHIP C 4700PF KC227 CK73GB1E103K CHIP C 0.010UF KC228 C92-0560-05 CHIP-TAN 10UF 6.3WV
C230 CK73GB1C104K CHIP C 0.10UF KC231,232 CK73GB1H102K CHIP C 1000PF KC233 C92-0507-05 CHIP-TAN 4.7UF 6.3WVC235 CK73GB1A105K CHIP C 1.0UF KC249 C92-0507-05 CHIP-TAN 4.7UF 6.3WV
C250 CK73GB1C104K CHIP C 0.10UF KC251 C92-0714-05 CHIP-TAN 4.7UF 6.3WVC252 CC73GCH1H390J CHIP C 39PF JC253,254 CK73GB1A224K CHIP C 0.22UF KC255 CK73GB1H822K CHIP C 8200PF K
C256 CK73GB1E183K CHIP C 0.018UF KC257 CK73GB1C393K CHIP C 0.039UF KC258-261 CK73GB1H103J CHIP C 0.010UF JC262 CK73GB1H102K CHIP C 1000PF KC263,264 CK73GB1C333K CHIP C 0.033UF K
C265 CK73GB1C104K CHIP C 0.10UF KC266 CK73GB1A105K CHIP C 1.0UF KC267 CK73GB1A474K CHIP C 0.47UF KC268 CK73GB1A105K CHIP C 1.0UF KC270 C92-0507-05 CHIP-TAN 4.7UF 6.3WV
C271 CK73GB1H122K CHIP C 1200PF KC272 CK73GB1H102K CHIP C 1000PF KC273 CK73GB1A105K CHIP C 1.0UF KC274 CK73FB1C224K CHIP C 0.22UF KC275 CK73GB1A105K CHIP C 1.0UF K
C276,277 CK73GB1H102K CHIP C 1000PF KC278 CK73GB1C104K CHIP C 0.10UF KC279 C92-0516-05 CHIP-TAN 4.7UF 16WVC280 C92-0040-05 CHIP-ELE 47UF 16WVC281 CK73GB1H102K CHIP C 1000PF K
C282 CE04EQ1E331M ELECTRO 330UF 25WVC283 CK73GB1H102K CHIP C 1000PF KC301 C92-0507-05 CHIP-TAN 4.7UF 6.3WVC302 CK73GB1H102K CHIP C 1000PF KC303 CK73GB1H472K CHIP C 4700PF K
C304,305 CC73GCH1H331J CHIP C 330PF JC306 CK73GB1H102K CHIP C 1000PF KC307 CK73GB1E223K CHIP C 0.022UF KC308 CK73GB1H102K CHIP C 1000PF KC309 CK73GB1E223K CHIP C 0.022UF K
TX-RX UNIT (X57-685X-XX)
0-10 : K 0-21 : M2 0-22 : M3 0-23 : M4 2-71 : E
TM-271A/271E
12
PARTS LIST
K,M2,M3,M4 : TM-271A
E : TM-271E
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
TX-RX UNIT (X57-685X-XX)
C310 CK73FB1C334K CHIP C 0.33UF KC311,312 CK73GB1C104K CHIP C 0.10UF KC313 C92-0662-05 CHIP-TAN 15UF 6.3WVC314 CK73GB1H103K CHIP C 0.010UF KC315-318 CK73GB1C104K CHIP C 0.10UF K
C319 CK73GB1H102K CHIP C 1000PF KC321 CC73GCH1H680J CHIP C 68PF JC322 CC73GCH1H560J CHIP C 56PF JC323 CC73GCH1H271J CHIP C 270PF JC324 CK73GB1H103K CHIP C 0.010UF K
C326 CK73GB1H103K CHIP C 0.010UF KC350 CK73GB1H471K CHIP C 470PF KC351 CC73GCH1H330J CHIP C 33PF JC353 CK73GB1H103K CHIP C 0.010UF KC354 CC73GCH1H4R5B CHIP C 4.5PF B
C355 CC73GCH1H180J CHIP C 18PF JC356 CC73GCH1H030B CHIP C 3.0PF BC357 CK73GB1H103K CHIP C 0.010UF KC358 CK73GB1H102K CHIP C 1000PF KC359 CC73GCH1H080B CHIP C 8.0PF B
C360-362 CK73GB1H102K CHIP C 1000PF KC363 CK73GB1H103K CHIP C 0.010UF KC364 CK73GB1H102K CHIP C 1000PF KC366 CK73GB1C104K CHIP C 0.10UF KC367 CC73GCH1H151J CHIP C 150PF J
C368 CC73GCH1H270J CHIP C 27PF JC369 CC73GCH1H030B CHIP C 3.0PF BC370 CK73GB1H102K CHIP C 1000PF KC371 CC73GCH1H020B CHIP C 2.0PF BC372 CK73GB1H102K CHIP C 1000PF K
C373 CC73GCH1H060B CHIP C 6.0PF BC374 CC73GCH1H270J CHIP C 27PF JC375-379 CK73GB1H102K CHIP C 1000PF KC380 CC73GCH1H101J CHIP C 100PF JC381 CC73GCH1H4R5B CHIP C 4.5PF B
C382 CC73GCH1H270J CHIP C 27PF JC383 CK73GB1H102K CHIP C 1000PF KC384 CC73GCH1H020B CHIP C 2.0PF BC385 CC73GCH1H080B CHIP C 8.0PF BC386 CC73GCH1H360J CHIP C 36PF J
C387 CK73GB1H102K CHIP C 1000PF KC388 CC73GCH1H070B CHIP C 7.0PF BC389 CK73GB1H102K CHIP C 1000PF KC390 CC73GCH1H090B CHIP C 9.0PF BC391 CC73GCH1H160G CHIP C 16PF G
C400 CK73GB1C104K CHIP C 0.10UF KC401-403 CC73GCH1H101J CHIP C 100PF JC404 C92-0662-05 CHIP-TAN 15UF 6.3WVC406 CK73GB1H102K CHIP C 1000PF KC408 CC73GCH1H220J CHIP C 22PF J
C409 CK73GB1C104K CHIP C 0.10UF KC410 C92-0560-05 CHIP-TAN 10UF 6.3WVC411 CK73GB1C104K CHIP C 0.10UF KC412 C92-0560-05 CHIP-TAN 10UF 6.3WVC413 CK73GB1H103K CHIP C 0.010UF K
C414 CK73GB1C104K CHIP C 0.10UF KC416-418 CK73GB1H102K CHIP C 1000PF KC421,422 CK73GB1H471K CHIP C 470PF KC423 C92-0555-05 CHIP-TAN 0.047UF 35WVC424 C92-0004-05 CHIP-TAN 1.0UF 16WV
C425 C92-0001-05 CHIP C 0.1UF 35WVC426 CC73GCH1H300J CHIP C 30PF JC427 CC73GCH1H080B CHIP C 8.0PF BC428 CK73GB1H471K CHIP C 470PF KC429 CC73GCH1H010B CHIP C 1.0PF B
C430 CC73GCH1H4R5B CHIP C 4.5PF BC431 CC73GCH1H050B CHIP C 5.0PF BC432 CC73GCH1H0R3B CHIP C 0.3PF BC434 CC73GCH1H151J CHIP C 150PF JC435 CC73GCH1H100C CHIP C 10PF C
C436 CC73GCH1HR75B CHIP C 0.75PF BC437 CK73GB1H471K CHIP C 470PF KC438 CC73GCH1H0R5B CHIP C 0.5PF BC439 CC73GCH1H100C CHIP C 10PF CC440 CC73GCH1H110G CHIP C 11PF G
C441 CC73GCH1H0R5B CHIP C 0.5PF BC442 C92-0560-05 CHIP-TAN 10UF 6.3WVC444 CK73GB1H471K CHIP C 470PF KC448,449 CK73GB1H471K CHIP C 470PF KC450 C92-0795-05 CHIP-TAN 22UF 10WV
C451,452 CK73GB1H471K CHIP C 470PF KC453 CK73GB1H221K CHIP C 220PF KC454 CC73GCH1H060B CHIP C 6.0PF BC455 CC73GCH1H030B CHIP C 3.0PF BC456 CC73GCH1H020B CHIP C 2.0PF B
C457 CK73GB1H102K CHIP C 1000PF KC458 CK73GB1H221K CHIP C 220PF KC459 CK73GB1H102K CHIP C 1000PF KC460 CC73GCH1H180J CHIP C 18PF JC461 CK73GB1H102K CHIP C 1000PF K
C462 CC73GCH1H100C CHIP C 10PF CC463,464 CK73GB1H102K CHIP C 1000PF KC465 CC73GCH1H220J CHIP C 22PF JC466 CC73GCH1H101J CHIP C 100PF JC467 CK73GB1H102K CHIP C 1000PF K
C468 CK73GB1H221K CHIP C 220PF KC471 CC73GCH1H100C CHIP C 10PF CC473-476 CK73GB1H102K CHIP C 1000PF KC501,502 CK73GB1H102K CHIP C 1000PF KC503 CC73GCH1H101J CHIP C 100PF J
C504-507 CK73GB1H102K CHIP C 1000PF KC509 CC73GCH1H150J CHIP C 15PF JC510 CC73GCH1H080B CHIP C 8.0PF BC511-514 CK73GB1H102K CHIP C 1000PF KC515 CC73GCH1H270J CHIP C 27PF J
C516 CK73GB1H821K CHIP C 820PF KC517 CC73GCH1H030B CHIP C 3.0PF BC518 CC73GCH1H330J CHIP C 33PF JC519 CC73GCH1H820J CHIP C 82PF JC522 CK73FB1H102K CHIP C 1000PF K
C525 CK73GB1H102K CHIP C 1000PF KC526 CK73GB1H681K CHIP C 680PF KC527 CK73GB1H102K CHIP C 1000PF KC528 CK73GB1H221K CHIP C 220PF KC529 CK73FB1H102K CHIP C 1000PF K
C530 CK73FB1C474K CHIP C 0.47UF KC531 C92-0719-05 CHIP-TAN 47UF 25WVC533 C93-0572-05 CHIP C 100PF JC536 CK73FB1H102K CHIP C 1000PF KC541,542 CM73F2H120J CHIP C 12PF J
TM-271A/271E
13K,M2,M3,M4 : TM-271A
E : TM-271E
PARTS LIST
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
TX-RX UNIT (X57-685X-XX)
C543,544 CM73F2H150J CHIP C 15PF JC545 C93-0603-05 CHIP C 1000PF KC546 CK73FB1C474K CHIP C 0.47UF KC549 CM73F2H221J CHIP C 220PF JC550 CM73F2H680J CHIP C 68PF J
C552 C93-0564-05 CHIP C 22PF JC553 C93-0553-05 CHIP C 3.0PF CC554 C93-0603-05 CHIP C 1000PF KC555 C93-0555-05 CHIP C 5.0PF CC556 C93-0603-05 CHIP C 1000PF K
C557,558 CK73GB1H103K CHIP C 0.010UF KC559 CK73GB1C104K CHIP C 0.10UF KC560 CK73GB1H102K CHIP C 1000PF KC574 CK73GB1H102K CHIP C 1000PF KC576 CK73GB1H221K CHIP C 220PF K
C602 C93-0561-05 CHIP C 12PF JC603 C93-0603-05 CHIP C 1000PF KC605 C93-0562-05 CHIP C 15PF JC606 CC73GCH1H0R5B CHIP C 0.5PF BC607 CC73GCH1H020B CHIP C 2.0PF B
C608 C93-0565-05 CHIP C 27PF JC610 CC73GCH1H0R5B CHIP C 0.5PF BC611 CC73GCH1H020B CHIP C 2.0PF BC613 C93-0565-05 CHIP C 27PF JC614 C93-0553-05 CHIP C 3.0PF C E
C615 C93-0564-05 CHIP C 22PF JC616,617 CK73GB1H102K CHIP C 1000PF KC623 C93-0553-05 CHIP C 3.0PF CTC401 C05-0399-05 CERAMIC TRIMMER (6PF)TC402 C05-0245-05 CERAMIC TRIMMER (10PF)
- E11-0425-05 3.5D PHONE JACK (3P)- E37-1127-05 PROCESSED LEAD WIRECN1 E40-6268-05 FLAT CABLE CONNECTORCN2 E40-5705-05 PIN ASSYCN5 E40-3246-05 PIN ASSY
F1 F53-0246-05 FUSE (4.0A/32V)F501 F53-0108-05 FUSE (1.8A/50V)
CF301 L72-0993-05 CERAMIC FILTERCF302 L72-0999-05 CERAMIC FILTERL101 L92-0443-05 FERRITE CHIPL201 L92-0443-05 FERRITE CHIPL301 L34-4554-05 COIL
L302 L41-3385-08 SMALL FIXED INDUCTORL303,304 L40-3381-86 SMALL FIXED INDUCTOR (0.33UH)L351 L41-8285-08 SMALL FIXED INDUCTORL352 L41-5685-08 SMALL FIXED INDUCTORL354-356 L34-4612-05 AIR-CORE COIL
L357 L34-4610-05 AIR-CORE COILL401 L92-0443-05 FERRITE CHIPL403 L41-1005-08 SMALL FIXED INDUCTORL404 L92-0442-05 FERRITE CHIPL405 L92-0443-05 FERRITE CHIP
L406,407 L40-2785-92 SMALL FIXED INDUCTOR (270NH)L408 L40-3378-67 SMALL FIXED INDUCTOR (33NH)L409,410 L40-2702-86 SMALL FIXED INDUCTOR (27UH)L411,412 L40-2785-92 SMALL FIXED INDUCTOR (270NH)L413 L40-4778-67 SMALL FIXED INDUCTOR (47NH)
L414,415 L40-2702-86 SMALL FIXED INDUCTOR (27UH)L416,417 L92-0443-05 FERRITE CHIP
L418 L41-3375-06 SMALL FIXED INDUCTORL419 L41-1085-06 SMALL FIXED INDUCTORL420 L41-1585-06 SMALL FIXED INDUCTORL421 L41-1085-06 SMALL FIXED INDUCTORL422 L40-5675-92 SMALL FIXED INDUCTOR (56NH)
L423 L92-0443-05 FERRITE CHIPL501,502 L41-6875-08 SMALL FIXED INDUCTORL503,504 L41-2775-06 SMALL FIXED INDUCTORL505 L34-4645-05 AIR-CORE COILL506 L34-4693-05 AIR-CORE COIL
L507 L34-4732-05 AIR-CORE COILL508 L34-4669-05 AIR-CORE COILL509 L34-4667-05 AIR-CORE COILL601 L34-4737-05 AIR-CORE COILL602-604 L34-4736-05 AIR-CORE COIL
L605 L34-4667-05 AIR-CORE COILX86 L78-1409-05 RESONATOR (8.00MHZ)X401 L77-1944-05 TCXO (16.8MHZ)XF351 L71-0620-05 MCF (49.95MHZ)
R1 R92-1252-05 CHIP R 0 OHM J 1/16WR2,3 RK73GB1J101J CHIP R 100 J 1/16WR4-8 RK73GB1J102J CHIP R 1.0K J 1/16WR31 RK73GB1J472J CHIP R 4.7K J 1/16WR32 R92-1215-05 CHIP R 470 J 1/2W
R33 RK73GB1J473J CHIP R 47K J 1/16WR34 RK73GB1J472J CHIP R 4.7K J 1/16WR35 RK73GB1J473J CHIP R 47K J 1/16WR36 RK73GB1J152J CHIP R 1.5K J 1/16WR37 R92-1252-05 CHIP R 0 OHM J 1/16W
R38 RK73GB1J334J CHIP R 330K J 1/16WR39 RK73GB1J474J CHIP R 470K J 1/16WR40 RK73GB1J394J CHIP R 390K J 1/16WR41 RK73GB1J334J CHIP R 330K J 1/16WR61 RK73GB1J471J CHIP R 470 J 1/16W
R62,63 R92-1252-05 CHIP R 0 OHM J 1/16WR70 RK73GB1J473J CHIP R 47K J 1/16WR81 RK73GB1J473J CHIP R 47K J 1/16WR82 R92-1252-05 CHIP R 0 OHM J 1/16WR86 R92-1252-05 CHIP R 0 OHM J 1/16W
R87 RK73GB1J102J CHIP R 1.0K J 1/16WR91,92 RK73GB1J102J CHIP R 1.0K J 1/16WR93 RK73GB1J682J CHIP R 6.8K J 1/16WR94 RK73GB1J103J CHIP R 10K J 1/16WR101,102 RK73GB1J473J CHIP R 47K J 1/16W
R103-106 RK73GB1J102J CHIP R 1.0K J 1/16WR109 RK73GB1J152J CHIP R 1.5K J 1/16WR110 RK73GB1J473J CHIP R 47K J 1/16WR111 RK73GB1J102J CHIP R 1.0K J 1/16WR114 RK73GB1J473J CHIP R 47K J 1/16W
R118 R92-1252-05 CHIP R 0 OHM J 1/16WR119 R92-0670-05 CHIP R 0 OHM K,M3,M4R119 R92-0670-05 CHIP R 0 OHM ER120 R92-1252-05 CHIP R 0 OHM J 1/16W M4R120-123 R92-1252-05 CHIP R 0 OHM J 1/16W K
R121-123 R92-1252-05 CHIP R 0 OHM J 1/16W ER122,123 R92-1252-05 CHIP R 0 OHM J 1/16W M2,M3,M4R124-127 RK73GB1J473J CHIP R 47K J 1/16WR151 RK73GB1J103J CHIP R 10K J 1/16WR152 RK73GB1J472J CHIP R 4.7K J 1/16W
TM-271A/271E
14
PARTS LIST
K,M2,M3,M4 : TM-271A
E : TM-271E
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
TX-RX UNIT (X57-685X-XX)
R161 RK73GB1J122J CHIP R 1.2K J 1/16WR162 RK73GB1J152J CHIP R 1.5K J 1/16WR164-166 RK73GB1J102J CHIP R 1.0K J 1/16WR200 RK73GB1J681J CHIP R 680 J 1/16WR203 RK73GB1J104J CHIP R 100K J 1/16W
R204 RK73GB1J103J CHIP R 10K J 1/16W ER204 RK73GB1J183J CHIP R 18K J 1/16W K,M2,M3R204 RK73GB1J183J CHIP R 18K J 1/16W M4R205 RK73GB1J821J CHIP R 820 J 1/16WR206 RK73GB1J101J CHIP R 100 J 1/16W
R207 RK73GB1J105J CHIP R 1.0M J 1/16W ER207 RK73GB1J754J CHIP R 750K J 1/16W K,M2,M3R207 RK73GB1J754J CHIP R 750K J 1/16W M4R208 RK73GB1J152J CHIP R 1.5K J 1/16WR209 RK73GB1J244J CHIP R 240K J 1/16W
R210 RK73GB1J183J CHIP R 18K J 1/16WR211,212 RK73GB1J823J CHIP R 82K J 1/16WR213 RK73GB1J334J CHIP R 330K J 1/16WR214,215 RK73GB1J683J CHIP R 68K J 1/16WR216 RK73GB1J274J CHIP R 270K J 1/16W
R217 RK73GB1J224J CHIP R 220K J 1/16WR218 RK73GB1J823J CHIP R 82K J 1/16WR219 RK73GB1J124J CHIP R 120K J 1/16WR220,221 RK73GH1J153D CHIP R 15K D 1/16WR222 RK73GB1J103J CHIP R 10K J 1/16W
R224 RK73GB1J561J CHIP R 560 J 1/16WR225 RK73GB1J154J CHIP R 150K J 1/16WR226 RK73GB1J104J CHIP R 100K J 1/16WR227 RK73GB1J223J CHIP R 22K J 1/16WR228 RK73GB1J103J CHIP R 10K J 1/16W
R229 RK73GB1J684J CHIP R 680K J 1/16WR230 RK73GB1J224J CHIP R 220K J 1/16WR231 RK73GB1J124J CHIP R 120K J 1/16WR232 RK73GB1J912J CHIP R 9.1K J 1/16WR233 RK73GB1J682J CHIP R 6.8K J 1/16W
R234 R92-1252-05 CHIP R 0 OHM J 1/16WR236 RK73GB1J103J CHIP R 10K J 1/16WR237 R92-1252-05 CHIP R 0 OHM J 1/16WR246 RK73GB1J154J CHIP R 150K J 1/16WR247 RK73GB1J124J CHIP R 120K J 1/16W
R248 RK73GB1J562J CHIP R 5.6K J 1/16WR249 RK73GB1J153J CHIP R 15K J 1/16WR250 RK73GB1J123J CHIP R 12K J 1/16WR251 RK73GB1J473J CHIP R 47K J 1/16WR252 RK73GB1J474J CHIP R 470K J 1/16W
R253 R92-1252-05 CHIP R 0 OHM J 1/16WR254 RK73GB1J272J CHIP R 2.7K J 1/16WR255,256 RK73GB1J562J CHIP R 5.6K J 1/16WR257 RK73GB1J105J CHIP R 1.0M J 1/16WR258 RK73GB1J272J CHIP R 2.7K J 1/16W
R259 RK73GB1J123J CHIP R 12K J 1/16WR260 RK73GB1J224J CHIP R 220K J 1/16WR261 RK73GB1J124J CHIP R 120K J 1/16WR262 RK73GB1J183J CHIP R 18K J 1/16WR263 RK73GH1J913D CHIP R 91K D 1/16W
R264 RK73GH1J124D CHIP R 120K D 1/16WR265 RK73GH1J562D CHIP R 5.6K D 1/16WR266 RK73GB1J562J CHIP R 5.6K J 1/16WR268 RK73GB1J102J CHIP R 1.0K J 1/16WR269 RK73GB1J393J CHIP R 39K J 1/16W
R271 RK73GB1J332J CHIP R 3.3K J 1/16WR272 RK73GB1J392J CHIP R 3.9K J 1/16WR273 RK73GB1J123J CHIP R 12K J 1/16WR274,275 RK73GB1J153J CHIP R 15K J 1/16WR276 RK73GB1J473J CHIP R 47K J 1/16W
R277 RK73GB1J683J CHIP R 68K J 1/16WR278 RK73GB1J123J CHIP R 12K J 1/16WR279 RK73GB1J472J CHIP R 4.7K J 1/16WR280 RK73GB1J391J CHIP R 390 J 1/16WR281 R92-0670-05 CHIP R 0 OHM
R301,302 RK73GB1J472J CHIP R 4.7K J 1/16WR303 RK73GB1J223J CHIP R 22K J 1/16WR304 RK73GB1J472J CHIP R 4.7K J 1/16WR305 RK73GB1J182J CHIP R 1.8K J 1/16WR306 RK73GB1J274J CHIP R 270K J 1/16W
R308 RK73GB1J334J CHIP R 330K J 1/16WR309 RK73GB1J332J CHIP R 3.3K J 1/16WR310 RK73GB1J102J CHIP R 1.0K J 1/16WR311 RK73GB1J333J CHIP R 33K J 1/16WR312 RK73GB1J473J CHIP R 47K J 1/16W
R313 RK73GB1J104J CHIP R 100K J 1/16WR314 RK73GB1J222J CHIP R 2.2K J 1/16WR315 RK73GB1J183J CHIP R 18K J 1/16WR316 RK73GB1J223J CHIP R 22K J 1/16WR317-320 RK73GB1J103J CHIP R 10K J 1/16W
R321 RK73GB1J223J CHIP R 22K J 1/16WR322 RK73GB1J101J CHIP R 100 J 1/16WR323 RK73GB1J124J CHIP R 120K J 1/16WR324 R92-1252-05 CHIP R 0 OHM J 1/16WR325 RK73GB1J333J CHIP R 33K J 1/16W
R349 RK73GB1J473J CHIP R 47K J 1/16WR350 RK73GB1J273J CHIP R 27K J 1/16WR351 RK73GB1J471J CHIP R 470 J 1/16WR352 RK73GB1J101J CHIP R 100 J 1/16WR353 RK73GB1J104J CHIP R 100K J 1/16W
R354 RK73GB1J331J CHIP R 330 J 1/16WR355 RK73GB1J471J CHIP R 470 J 1/16WR356 RK73GB1J102J CHIP R 1.0K J 1/16WR358 RK73GB1J221J CHIP R 220 J 1/16WR359 RK73GB1J224J CHIP R 220K J 1/16W
R360 RK73GB1J474J CHIP R 470K J 1/16WR361 RK73GB1J181J CHIP R 180 J 1/16WR362 RK73GB1J474J CHIP R 470K J 1/16WR363 RK73GB1J334J CHIP R 330K J 1/16WR364 R92-1252-05 CHIP R 0 OHM J 1/16W
R365 RK73GB1J104J CHIP R 100K J 1/16WR366 RK73GB1J471J CHIP R 470 J 1/16WR367 RK73GB1J101J CHIP R 100 J 1/16WR368 RK73GB1J104J CHIP R 100K J 1/16WR369 R92-1252-05 CHIP R 0 OHM J 1/16W
R370 RK73GB1J560J CHIP R 56 J 1/16WR371 RK73GB1J393J CHIP R 39K J 1/16WR372,373 RK73GB1J473J CHIP R 47K J 1/16WR374 RK73GB1J273J CHIP R 27K J 1/16WR375,376 RK73GB1J104J CHIP R 100K J 1/16W
R379 RK73GB1J104J CHIP R 100K J 1/16WR401-403 RK73GB1J102J CHIP R 1.0K J 1/16WR404 RK73GB1J103J CHIP R 10K J 1/16WR406 RK73GB1J103J CHIP R 10K J 1/16WR407 RK73GB1J152J CHIP R 1.5K J 1/16W
TM-271A/271E
15K,M2,M3,M4 : TM-271A
E : TM-271E
PARTS LIST
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
TX-RX UNIT (X57-685X-XX)
R408 RK73GB1J100J CHIP R 10 J 1/16WR409 RK73GB1J104J CHIP R 100K J 1/16WR410 RK73GB1J822J CHIP R 8.2K J 1/16WR411 RK73GB1J562J CHIP R 5.6K J 1/16WR412,413 RK73GB1J103J CHIP R 10K J 1/16W
R414 RK73GB1J471J CHIP R 470 J 1/16WR415 R92-1252-05 CHIP R 0 OHM J 1/16WR416 RK73GB1J471J CHIP R 470 J 1/16WR417 RK73GB1J224J CHIP R 220K J 1/16WR418 RK73GB1J102J CHIP R 1.0K J 1/16W
R419 RK73GB1J272J CHIP R 2.7K J 1/16WR420 RK73GB1J102J CHIP R 1.0K J 1/16WR421 RK73GB1J152J CHIP R 1.5K J 1/16WR422 RK73GB1J103J CHIP R 10K J 1/16WR423 RK73GB1J221J CHIP R 220 J 1/16W
R424 RK73GB1J101J CHIP R 100 J 1/16WR425,426 RK73GB1J473J CHIP R 47K J 1/16WR427 RK73GB1J104J CHIP R 100K J 1/16WR428 RK73GB1J473J CHIP R 47K J 1/16WR429 RK73GB1J271J CHIP R 270 J 1/16W
R430 RK73GB1J221J CHIP R 220 J 1/16WR431 RK73GB1J104J CHIP R 100K J 1/16WR432 RK73GB1J102J CHIP R 1.0K J 1/16WR433 RK73GB1J472J CHIP R 4.7K J 1/16WR434 R92-1252-05 CHIP R 0 OHM J 1/16W
R435 RK73GB1J101J CHIP R 100 J 1/16WR436 RK73GB1J124J CHIP R 120K J 1/16WR437 RK73GB1J102J CHIP R 1.0K J 1/16WR438 RK73GB1J223J CHIP R 22K J 1/16WR439 RK73GB1J473J CHIP R 47K J 1/16W
R440-442 RK73GB1J101J CHIP R 100 J 1/16WR443 RK73GB1J222J CHIP R 2.2K J 1/16WR444 RK73GB1J102J CHIP R 1.0K J 1/16WR501 RK73GB1J102J CHIP R 1.0K J 1/16WR502 RK73GB1J271J CHIP R 270 J 1/16W
R503 RK73GB1J180J CHIP R 18 J 1/16WR504 RK73GB1J271J CHIP R 270 J 1/16WR505 RK73GB1J222J CHIP R 2.2K J 1/16WR506 RK73GB1J103J CHIP R 10K J 1/16WR507 RK73GB1J100J CHIP R 10 J 1/16W
R509 RK73GB1J220J CHIP R 22 J 1/16WR510 RK73GB1J152J CHIP R 1.5K J 1/16WR511 RK73FB2A470J CHIP R 47 J 1/10WR512 RK73FB2A100J CHIP R 10 J 1/10WR513 RK73FB2A222J CHIP R 2.2K J 1/10W
R514 R92-1217-05 CHIP R 0 OHMR516 R92-0670-05 CHIP R 0 OHMR518 RK73EB2B330J CHIP R 33 J 1/8WR519 RK73GB1J333J CHIP R 33K J 1/16WR520 RK73GB1J183J CHIP R 18K J 1/16W
R521 RK73GB1J101J CHIP R 100 J 1/16WR522 RK73EB2B331J CHIP R 330 J 1/8WR523 RK73GB1J393J CHIP R 39K J 1/16WR524 R92-1215-05 CHIP R 470 J 1/2WR525 RK73GB1J563J CHIP R 56K J 1/16W
R526 R92-1261-05 CHIP R 150 J 1/2WR527 RK73GB1J224J CHIP R 220K J 1/16WR528,529 RK73GB1J471J CHIP R 470 J 1/16WR530 RK73GB1J102J CHIP R 1.0K J 1/16WR531 RK73GB1J473J CHIP R 47K J 1/16W
R532,533 R92-1252-05 CHIP R 0 OHM J 1/16WR601,602 RK73GB1J223J CHIP R 22K J 1/16WR605 RK73GB1J153J CHIP R 15K J 1/16WR606 RK73GB1J221J CHIP R 220 J 1/16WR607 RK73GB1J331J CHIP R 330 J 1/16W
R800 R92-1061-05 JUMPERVR601 R12-6427-05 TRIMMING POT. (47K/12)
D1-6 DA221 DIODED31 ZSH5MA27 SURGE ABSORBERD32 1812L110PR VARISTORD61 02DZ18(X,Y) ZENER DIODED62 MA2S077 DIODE
D201 DAN222 DIODED202 1SS372 DIODED251 MA742 DIODED301 MA742 DIODED302,303 DAN222 DIODE
D351-354 HVC376B VARIABLE CAPACITANCE DIODED401 MA2S111 DIODED402 HZU5ALL DIODED403-406 MA2S304 VARIABLE CAPACITANCE DIODED407 1SV278 VARIABLE CAPACITANCE DIODE
D408 MA2S111 DIODED409 DAN235E DIODED501 1SS355 DIODED502 DA221 DIODED503 02DZ5.1(Y) ZENER DIODE
D602 MA4PH633 DIODED603 XB15A709 DIODED605 XB15A709 DIODED606,607 MA742 DIODED608 1SS355 DIODE
IC31 KIA7808AF ANALOG ICIC32,33 NJM78L05UA BI-POLAR ICIC34 BD4732G MOS ICIC35 BD4740G MOS ICIC66 AT24C64A10SI18 ROM IC
IC66 CAT24WC64JI ROM ICIC101 30622MAA-B85GP MPUIC161 M62363FP MOS ICIC201 NJM2100V MOS ICIC202 BA10358FV MOS IC
IC203 BA10324AFV MOS ICIC204,205 BU4S66 MOS ICIC251 BA10324AFV MOS ICIC252 2B LA4600 BI-POLAR ICIC301 TK14489V BI-POLAR IC
IC401 MB15A02 MOS ICIC402 UPB1509GV BI-POLAR ICIC501 TA75W01FU MOS ICQ31 2SA1641(S,T) TRANSISTORQ32 KRC102S DIGITAL TRANSISTOR
Q33 2SA1745(6,7) TRANSISTORQ34 KRC102S DIGITAL TRANSISTORQ35 KTA1664(Y) TRANSISTORQ36 KRC102S DIGITAL TRANSISTORQ61 KRC404RTK DIGITAL TRANSISTOR
Q86,87 2SK1830 FETQ201 2SC4919 TRANSISTOR
TM-271A/271E
16
PARTS LIST
K,M2,M3,M4 : TM-271A
E : TM-271E
Q251 2SC2412K TRANSISTORQ252,253 2SK3019 FETQ254 DTC363EU DIGITAL TRANSISTORQ255 KRC102S DIGITAL TRANSISTORQ301,302 2SC2412K TRANSISTOR
Q351 2SC5488 TRANSISTORQ352,353 3SK318 FETQ354 2SK1830 FETQ402 2SA1832(GR) TRANSISTORQ403 2SC4738(GR) TRANSISTOR
Q404 2SC4649(N,P) TRANSISTORQ405,406 2SK508NV(K52) FETQ407 2SJ347 FETQ408 KRX102U TRANSISTORQ410 2SC5108(Y) TRANSISTOR
Q411 2SC4649(N,P) TRANSISTORQ440 2SC2412K TRANSISTORQ501,502 2SC3357 TRANSISTORQ503 PD55003TR DRIVE FETQ504 2B RD70HVF1-01 FINAL FET
TH97,98 NCP18WF104J03 THERMISTORTH301 NCP18WF104J03 THERMISTOR
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
TX-RX UNIT (X57-685X-XX)
TM-271A/271E
17
EXPLODED VIEW
Parts with the exploded numbers larger than 700 are not supplied.
3
2
1
BA
1
3031
18
2
3
Dx8
12
13,1429Ax2
A Cx1226 23
13
14
IC252
Q504
25 27
9
8 Cx2
Cx2
6
701S/No. label
702Standard label: K
700Caution label
703Sticker : M3
28
44
43
48
15
42
24
24Bx2
16
103
101
104102
TX-RX unit
Display unit
A M2.6 x 8 : N67-2608-46B M2 x 10 BLK : N80-2010-45C M2.6 x 6 (Br-Tap) : N87-2606-46D M2.6 x 14 (Br-Tap) : N87-2614-46
TM-271A/271E
18
PACKING
Parts with the exploded numbers larger than 700 are not supplied.
3
2
1
DC
17 Fuse (Blade, 15A/32V) (F51-0024-05) : E
5 Instruction manual (B62-1738-10) : K,M2,M3,E (B62-1739-10) : K,M2,E (B62-1745-10) : M3 (B62-1746-10) : M4 (B62-1784-10) : E
10 DC cord (E30-2111-15) : K,M2,M3,M4
46 Screw set (N99-0395-05)
49 Microphone (T91-0624-05) : M2,M4
704 Pamphlet705 Warranty card
36 Protection bag (H25-2341-04)
36 Protection bag (H25-2341-04)
33 Packing fixture (H12-3112-05)
33 Packing fixture (H12-3112-05)
34 Carton board (H13-1190-02)
40 Bracket (J29-0662-03)
39 MIC holder (J19-1584-05)
37 Item carton case (H52-1995-12) : K,M2 (H52-2027-02) : M3 (H52-2028-02) : M4 (H52-2029-12) : E
50 Microphone (T91-0641-05) : K,M3,E
11 DC cord (E30-3452-05) : E
20 Fuse (6x30, 15A) (F51-0017-05) : K,M2,M3,M4
TM-271A/271E
19
Resetting the TansceiverIf your transceiver seems to be malfunctioning, resetting
the microprocessor may solve the problem. The following 2reset modes are available. When performing the reset, youmay lose memory data and stored information. Back up orwrite down important data before performing the reset.
Initial SettingsThe factory defaults for the operating frequencies are as
follows.Transceiver : 144.000MHzThe Memory Channels have no data stored. The Weather
Radio frequency (AL channel) is restored as 162.550MHz (Kmarket model only). The Call Channel and frequency stepsize default values.Note : When in Channel Display Mode or while Key Lock isactivated, you cannot perform VFO reset or Full reset.
Full ResetThis resets all transceiver parameters to the factory de-
fault values. There are two methods available for resettingthe transceiver.
• Full Reset Method 1:1. With the transceiver power OFF, press [F]+[ ] (Power).
• All indicators light momentarily, followed by the full resetconfirmation message.
VFO ResetThis resets the transceiver parameters excluding the
DTMF Memory, the Memory channel contents, and the Callchannel contents. There are two methods available for reset-ting the transceiver.Note : Menu No. 7 (P.VFO) and Menu No. 10 (OFFSET) re-turn to the factory default values.
• VFO Reset Method 1:1. With the transceiver power OFF, press [VFO]+[ ]
(Power).• The VFO reset confirmation message appears.
2. Press [F].• “SURE ?” appears.• Press any key other than [F] to cancel.
3. Press [F] again to reset the transceiver.• “WAIT” appears momentarily.
• Full Reset Method 2:1. Press [F], [MENU] and turn the Tuning control to select
Menu No. 99 (RESET).2. Press [MENU] and turn the Tuning control to select
“FULL”.3. Press [MENU].
• “SURE ?” appears.
• Press any key other than [MENU] to cancel.4. Press [MENU] to reset the transceiver.
• “WAIT” appears momentarily.
2. Press [VFO].• “SURE ?” appears.• Press any key other than [VFO] to cancel.
3. Press [VFO] again to reset the transceiver.• “WAIT” appears momentarily.
• VFO Reset Method 2:1. Press [F], [MENU] and turn the Tuning control to select
Menu No. 99 (RESET).2. Press [MENU] and turn the Tuning control to select
“VFO”.3. Press [MENU].
• “SURE ?” appears.
• Press any key other than [MENU] to cancel.4. Press [MENU] to reset the transceiver.
RESETTING THE TRANSCEIVER
TM-271A/271E
20
ADJUSTMENT
Adjustment ModeIn Adjustment Mode, the transceiver can adjusted using
its panel keys.
Items that can be adjusted in Adjustment Mode *1 1. Frequency Tune 2. Transmit High Power *2 3. Transmit Low Power *2 4. DCS Balance *3 5. Max Deviation *3 6. CTCSS Fine Deviation *3
q Blinks in Adjustment Mode.w Adjustment item displaye Adjustment value display. Can be adjusted while it is
“blinking”.Displayed as a hexadecimal number from 00 to FF.
r Adjustment value stored in memory.When an adjustment value is determined, it is equal to thevalue in “3”.
Panel Key Operation Method in Adjustment Mode
q Power switch/Volume controlw When the knob is pressed once, the adjustment value dis-
play blinks. (Select an adjustment item with “4” or “5”key before performing the operation. It cannot be per-formed while transmitting.)When the knob is rotated while the adjustment display isblinking, the adjustment value changes. (Adjust transmis-sion items while transmitting.)When the knob is pressed again, the adjustment valuestops blinking and lights, and the adjustment value issaved in the memory of the transceiver. (For transmissionitem adjustment, enter receive mode before performingthe operation.)
e Changing between adjustment value display and fre-quency displayThe display changes as follows : Adjustment value display→ Transmit frequency display → Receive frequency dis-play → Adjustment value display.The frequency for adjustment can be confirmed.
r Moves the adjustment item backward. (If it is operatedwhen a frequency is displayed, the adjustment item dis-play returns.)
t Moves the adjustment item forward. (If it is operatedwhen a frequency is displayed, the adjustment item dis-play returns.)
y If it is pressed before determining the adjustment value,the adjustment value of the Adjustment item returns to itsoriginal value.
u Not used in Adjustment Mode.
Note :If Max Power for transmission is low, check the DC cable.If the DC cable connector has poor contact due to rust or
stain, voltage may drop occur frequently and correct trans-mission power may not be supplied.
In this case, polish the DC cable connector. If the problemstill persists, replace the DC cable with a new one.
r
w e
q
TM-271 MENU
q w
e r t y u
TX-RX unitComponent side
7. DCS Fine Deviation *3 8. DTMF Fine Deviation 9. Band Pass Tuning *410. Squelch Tight *511. Squelch Open *512. S-Meter S1 Level13. S-Meter Full Level
Note :*1 : The PLL lock voltage and Max Power Alignment for
transmission cannot be adjusted in Adjustment Mode.*2 : Adjusted in 5 points in the transmission operating fre-
quency range.*3 : Adjusted in 3 points for the Wide Band Width in the
transmission operating frequency range.Adjusted in 1 point for the Narrow Band Width
*4 : Adjusted in 3 points in the reception operating frequencyrange.
*5 : Adjusted in 3 points for the Wide Band Width in the re-ception operating frequency range.Adjusted in 1 point for the Narrow Band Width
How to Enter Adjustment ModeTo perform adjustments with transceiver panel keys, the
transceiver must be set to “Adjustment Mode”.While shorting the following figure terminals on the PCB
with tweezers, etc., turn the power switch ON to enter Ad-justment Mode. (See Fig. 1.)
LCD Display When Adjustment Mode is EnabledExample of Frequency Tune. See “Table 1” for an LCD
display list.
Fig. 1
Fig. 2
Fig. 3
TM-271A/271E
21
Adjustment Item Adjustment On the Note Transmit Receive Signalling
Frequency Point Display (MHz) (MHz)
Frequency Tune Center 155.10 155.05
TX High Power Low “H” icon appear 136.10 136.05
Low’ 142.10 142.05
Center 150.10 150.05
High’ 156.10 156.05
High 173.90 173.95
TX Low Power Low “L” icon appear 136.10 136.05
Low’ 142.10 142.05
Center 150.10 150.05
High’ 156.10 156.05
High 173.90 173.95
DCS Balance Low “DCS” icon appear 136.10 136.05 DCS : 023N
Center 155.10 155.05
High 173.90 173.95
DCS Balance (Narrow) Center “DCS” and “N” icon appear 155.10 155.05
Max Deviation Low 136.10 136.05
Center 155.10 155.05
High 173.90 173.95
Max Deviation (Narrow) Center “N” icon appear 155.10 155.05
CTCSS Fine Deviation Low “CT” icon appear 136.10 136.05 CTCSS : 88.5Hz
Center 155.10 155.05
High 173.90 173.95
CTCSS Fine Deviation (Narrow) Center “CT” and “N” icon appear 155.10 155.05
DCS Fine Deviation Low “DCS” icon appear 136.10 136.05 DCS : 023N
Center 155.10 155.05
High 173.90 173.95
DCS Fine Deviation (Narrow) Center “DCS” and “N” icons appear 155.10 155.05
DTMF Fine Deviation Center 155.10 155.05 DTMF : 9
DTMF Fine Deviation (Narrow) Center “N” icon appear 155.10 155.05
Band Pass Tuning Low “BUSY” icon appear 136.10 136.05
Center 155.10 155.05
High 173.90 173.95
Squelch Tight Low 136.10 136.05
Center 146.10 146.05
High 173.90 173.95
Squelch Tight (Narrow) Center “N” icon appear 146.10 146.05
Squelch Open Low 136.10 136.05
Center 146.10 146.05
High 173.90 173.95
Squelch Open (Narrow) Center “N” icon appear 146.10 146.05
S-Meter S1 Level Center 146.10 146.05
S-Meter Full Level Center 146.10 146.05
ADJUSTMENT
Table 1 Adjustment items, display and test frequency list
TM-271A/271E
22
Test Equipment Required for Alignment
Test Equipment Major Specifications
1. Standard Signal Generator Frequency Range 136 to 175MHz(SSG) Modulation Frequency modulation and external modulation
Output –127dBm/0.1µV to greater than –7dBm/100mV2. Power Meter Input Impedance 50Ω
Operation Frequency 136 to 175MHz or moreMeasurement Capability Vicinity of 100W
3. Deviation Meter Frequency Range 136 to 175MHz4. Digital Volt Meter Measuring Range 1 to 20V DC
(DVM) Accuracy High input impedance for minimum circuit loading5. Oscilloscope DC through 30MHz6. High Sensitivity Frequency Range 10Hz to 1000MHz
Frequency Counter Frequency Stability 0.2ppm or less7. Ammeter 20A8. AF Volt Meter Frequency Range 50Hz to 10kHz
(AF VTVM) Voltage Range 1mV to 3V9. Audio Generator (AG) Frequency Range 20Hz to 20kHz or more
Output 0 to 1V10. Distortion Meter Capability 3% or less at 1kHz
Input Level 50mV to 10Vrms11. 8Ω Dummy Load Approx. 8Ω, 10W or more12. Regulated Power Supply 13.8V, approx. 20A (adjustable from 9 to 17V)
Useful if ammeter requipped13. Spectrum Analyzer Center frequency 50KHz to 1000MHz14. Tracking Generator Output Voltage 100mV or more
Tuning cable (E30-3383-05)
Adapter cable (E30-3383-05) is required forinjecting an audio if adjustment mode isused.
MIC connector
(Front view)
Test cable for microphone input (E30-3360-08)
1 : BLC2 : PSB3 : E4 : PTT5 : ME6 : MIC7 : HOOK8 : CM
ADJUSTMENT
Lead wire +
MICShield wire –
3
2
4
5
6
7
8
3
1
2
4
5
6
7
8
1GREEN
RED
BLACK
BLUE
SHIELD
WHITE
GRAY
YELLOW
PTT
E
MIC-E
MIC
HK
1
8
TM-271A/271E
23
ADJUSTMENT
Adjustment Location
Adjustment Points
Notes
• EEPROMThe tuning data (Deviation, Squelch, etc.) for the EEP-
ROM, is stored in memory. When parts are changed, re-adjust the transceiver.
• AF PA IC (IC252)How to mounting the IC252.
• Speaker CableThe speaker cable should be formed before mounting the
shield cover as below.
• FuseTo mount the fuse, the cable terminal direction must be as
follow.
• Except the E type models
Locator
Speakercable
This side up This side up
Cable terminal Cable terminal
Fuse
Pin 1 marker
Part name label face down
IC25
2
TX-RX UNITComponent side
ANT
TC401
TC402L301
BPF
+B E
TX-RX unitFoil side
F501
VR601
Q503Q504
R516
R518 R524
IC25
2
GNDPR9
PR1PKS
SQCPKD
5M
CNVSS
RESETPOWER
RXDTXD
CV
RF
DC
+BE
TEMP1
PC8T
BPF
AFV
8T
TEMP2
TX-RX unitComponent side
• E type models
TM-271A/271E
24
ADJUSTMENT
PCB Section
1. Setting 1) Power supply voltageDC Power supply terminal : 13.8V
2. VCO lock 1) CH : TX high Digital voltmeter CV TC402 5.5V ±0.2Vvoltage*
2) CH : RX high TC401 5.5V ±0.2V
3) CH : TX low Check 0.5V or more
4) CH : RX low
3. IF coil 1) CH : RX center (Wide) SSG AFV L301 3.25~3.35V (DC)2) SSG output : –53dBm (501µV) Digital voltmeter
Mod : 1kHzDev : 3kHz
* Adjustment of TX VCO lock voltage1. Remove R516, F501, R518 and R524 (all on component side).2. Remove PCB from chassis.3. Transmit and check voltage at [CV] point.Warning : Do not transmit if step “1.” is not complete.4. Adjust of voltage can be done by tuning TC402.
Item ConditionTest equipment Terminal Parts Method
Specifications/
Remarks
Measurement Adjustment
Transmitter Section
1. Frequency 1) CH : TX center Frequency counter ANT Encoder Adjust to center frequency Within ±50Hz2) Transmit knob
2. Maximum 1) CH : TX high Power meter VR601 55W ±1Wpower 2) Adjustment HEX value : FFalignment 3) Transmit
3. High 1) CH : TX low Encoder Low : 50W ±1.0Wpower CH : TX low’ knob Low’ : 60W
CH : TX center Center : 60WCH : TX high’ High’ : 50WCH : TX high High : 50W
2) Transmit
4. Low 1) CH : TX low 25W ±1.0Wpower CH : TX low’
CH : TX centerCH : TX high’CH : TX high
2) Transmit
5. DCS 1) CH : TX low (Wide) Modulation analyzer Adjust the waveform as belowbalance CH : TC center (Wide/Narrow) or Linear detector
CH : TX high (Wide) (LPF : 3kHz)2) Transmit Oscilloscope
Item ConditionTest equipment Terminal Parts Method
Specifications/
Remarks
Measurement Adjustment
TM-271A/271E
25
Item ConditionTest equipment Terminal Parts Method
Specifications/
Remarks
Measurement Adjustment
ADJUSTMENT
If normal power is not obtained, please follow the
step belowOpen the shielding cover (upper), and screw 3 locationsaround ANT pin.1. Switch off the transceiver.
Impedance of Final FET (Q504) and Drive FET (Q503) canbe measured easily using DVM Ω mode.Normal condition – Gate : 20kΩ~50kΩ, Drain : 1MΩ~2MΩThe above impedance values are rough estimations.
2. Switch on the transceiver. Check the voltage at F501 out-put point.The voltage is around 13.8V in receiving condition. Thevoltage will be 12.6V~ in transmitting condition. If found0V at this point then F501 is broken.
3. Remove R516.
4. Connect 50Ω load at the ANT location.Transmit and check current drain at High power mode.If the current drain is less than 1A, then Final FET is bro-ken.If the current drain is less than 5.0A, short the Drive FETgate to ground, and check the current drain.If the current drain is not 0.1A less than the original value,then the Drive FET is broken.
5. Check input power level at Drive FET gate location.Connect the wire to [RF] location.Transmit and check for power to be within the range of0.3W~0.6W.If power found is less than 0.3W, check the circuit beforethe Drive FET.
6. MAX 1) CH : TX low (Wide) Modulation analyzer ANT Encoder ±4.0kHz (Wide) ±100Hz (Wide)deviation CH : TX center (Wide/Narrow) or Linear detector MIC knob ±2.0kHz (Narrow) ±50Hz (Narrow)
CH : TX high (Wide) (LPF : 15kHz) According to the large +, –2) AG : 1kHz/50mV Oscilloscope3) Transmit AG
AF V.M7. MIC 1) CH : TX center (Narrow) Check ±1.2~1.9kHz
sensitivity 2) AG : 1kHz/5.4mV (TM-271A) (Narrow)AG : 1kHz/2.4mV (TM-271E)
3) Transmit
8. CTCSS 1) CH : TX low (Wide) Modulation analyzer Encoder ±0.75kHz (Wide) ±50Hzfine CH : TX center (Wide/Narrow) or Linear detector knob ±0.35kHz (Narrow)deviation CH : TX high (Wide) (LPF : 3kHz)
2) Transmit Oscilloscope
9. DCS fine 1) CH : TX low (Wide) ±0.75kHz (Wide) ±50Hz (Wide)deviation CH : TX center (Wide/Narrow) ±0.35kHz (Narrow) ±40Hz (Narrow)
CH : TX high (Wide)2) Transmit
10. DTMF 1) CH : TX center (Wide/Narrow) ±3.0kHz (Wide) ±200Hz (Wide)fine 2) Transmit ±1.5kHz (Narrow) ±100Hz (Narrow)deviation
Receiver Section
1. Band pass 1) CH : RX low (Wide) SSG ANT Encoder Adjust to maximum SINAD. SINADtuning CH : RX center (Wide/Narrow) Oscilloscope EXT. SP knob : 12dB or higher
CH : RX high (Wide) AF V.M2) SSG output Distortion meter
: –121dBm (0.2µV) (Wide): –119dBm (0.25µV) (Narrow)Mod : 1kHzDev : ±3.0kHz (Wide)Dev : ±1.5kHz (Narrow)
Item ConditionTest equipment Terminal Parts Method
Specifications/
Remarks
Measurement Adjustment
TM-271A/271E
26
2. Squelch 1) CH : RX low (Wide) SSG ANT Encoder Adjust to open the squelchtight CH : RX center (Wide/Narrow) Oscilloscope EXT. SP knob
CH : RX high (Wide) AF V.M2) SSG output Distortion meter
: –115dBm (0.4µV) (Wide/Narrow)Mod : 1kHzDev : ±3.0kHz (Wide)Dev : ±1.5kHz (Narrow)
3. Squelch 1) CH : RX low (Wide)open CH : RX center (Wide/Narrow)
CH : RX high (Wide)2) SSG output
: –125dBm (0.126µV) (Wide/Narrow)Mod : 1kHzDev : ±3.0kHz (Wide)Dev : ±1.5kHz (Narrow)
4. RSSI 1) CH : RX center (Wide) Push RSSI value writing is per-writing 2) SSG output : –53dBm (501µV) encoder formed by the “Squelch
Mod : 1kHz knob open” item (center wide).Dev : ±3.0kHz SSG output level is changed
and adjusted after SQadjustment.This adjustment should notturn the encoder.
5. S-meter 1) CH : RX center (Wide)S1 2) SSG output : –118dBm (0.28µV)
Mod : 1kHzDev : ±3.0kHz
6. S-meter 1) CH : RX center (Wide)full scale 2) SSG output : –96dBm (3.54µV)
Mod : 1kHzDev : ±3.0kHz
Item ConditionTest equipment Terminal Parts Method
Specifications/
Remarks
Measurement Adjustment
ADJUSTMENT
TM-271A/271E
27
TX-RX UNIT (X57-685X-XX)
CN No. Pin No. Name Function
CN1 1 ENC A Encoder A
2 CM Microphone Key Check
3 ENC B Encoder B
4 MIC KEY Microphone Key
5 DI Data Out from LCD
6 CE Chip Enable for LCD
7 CL Clock for LCD
8 DO Data transfer to LCD
9 5C 5V DC power supply
10 8C 8V DC supply
11 VOL Volume
12 POWER Power Key
13 RXD RXD
14 BRI Brightness Control
15 PTT PTT
16 GND Ground
17 GND Ground
18 MIC Microphone
CN2 1 GND Ground
2 SQC Squelch Signal
3 PKS Transmission Control
4 PR1 1200bps Receive Data
5 PR9 9600bps Receive Data
6 GND Ground
7 PKD Transmission Modulation
CN No. Pin No. Name Function
CN5 1 INT SP Internal speaker
2 GND Ground
DISLAY UNIT (X54-3450-10)
CN No. Pin No. Name Function
CN1 1 ENC A Encoder A
2 CM Microphone Key Check
3 ENC B Encoder B
4 MIC KEY Microphone Key
5 DI Data Out from LCD
6 CE Chip Enable for LCD
7 CL Clock for LCD
8 DO Data transfer to LCD
9 5C 5V DC power supply
10 8C 8V DC supply
11 VOL Volume
12 POWER Power Key
13 RXD RXD
14 BRI Brightness Control
15 PTT PTT
16 GND Ground
17 ME ME
18 MIC Microphone
TERMINAL FUNCTION
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D2
CO
M3
CO
M2
CO
M3
CO
M0
SE
G31
SE
G30
SE
G29
SE
G28
SE
G27
SE
G26
SE
G25
SE
G24
SE
G23
SE
G22
SE
G21
SE
G20
SE
G19
SE
G18
SE
G17
SE
G16
SE
G15
SE
G14
SE
G13
SE
G12
SE
G11
SE
G10
SE
G9
SE
G8
SE
G7
SG
D3
J1MIC JACK
D19D20D21
CALL VFO MR
D22 D23
D25D26D27 D28 D29VR1POWER/VOL
C24
C27
C30
C31 C
32
C33
C36
C38
C398C
8C
PTT
PTT
MIC
MIC
CM
CM
MBL
MBL
GND
GND
ME
ME
HOOK
HOOK
C40
R55
C4
L1
D31
IC3
1
161732
33
4849 64
R21
R22
R23
R25R46
R51
R52
R53
CP
1
C15
C16
C19
LCD
28
TM-271A/271E PC BOARD
DISPLAY UNIT (X54-3450-10) Component side view (J72-0905-09)
DISPLAY UNIT (X54-3450-10) Foil side view (J72-0905-09)
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SE
G9
SE
G8
SE
G7
SE
G6
SE
G5
SE
G4
SE
G3
SE
G2
SE
G1
SE
G0
D3
D4
REV
FUNCTION
D23 D24
D29 D30 S1ENCODER
J72-0905-09
J72-0905-09
R47
R48
C22
C25
C27
C32
C34
C35
Q10
Q121
2 3
5
L1
R10
R26
Q6
Q9
BCE
R8
R41
R42R
43
R44
R45
R49
R50
R54
CN
1
1
18
ENCACM
ENCBMIC KEY
DICECLDO5C8C
VOLPOWER
RXDBRIPTT
GNDME
MIC
29
Component side
Foil side
Layer 1Layer 2
Component side
Foil side
Layer 1Layer 2
DISPLAY UNIT (X54-3450-10) Foil side view (J72-0905-09)
DISPLAY UNIT (X54-3450-10) Component side view (J72-0905-09)
PC BOARD TM-271A/271E
Ref. No. Address
D2 6F
D3 6J
D4 5O
D19 4G
D20 4P
D21 4E
D22 4I
D23 4J
D24 4K
D25 3G
D26 3F
D27 3E
D28 3I
D29 3J
D30 3K
Ref. No. Address
IC3 11H
Q6 10M
Q9 11M
Q10 10N
Q12 10N
D31 9C
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D2
CO
M3
CO
M2
CO
M3
CO
M0
SE
G31
SE
G30
SE
G29
SE
G28
SE
G27
SE
G26
SE
G25
SE
G24
SE
G23
SE
G22
SE
G21
SE
G20
SE
G19
SE
G18
SE
G17
SE
G16
SE
G15
SE
G14
SE
G13
SE
G12
SE
G11
SE
G10
SE
G9
SE
G8
SE
G7
SE
G6
SE
G5
SE
G4
SE
G3
SE
G2
SE
G1
SE
G0
D3
D4J1MIC JACK
D19D20D21
CALL VFO MR REV
FUNCTION
D22 D23 D24
D25D26D27 D28 D29 D30 S1ENCODER
J72-0905-09
J72-0905-09
VR1POWER/VOL
R47
R48
C22
C24
C25
C27
C30
C31 C
32
C33
C34
C35
C36
C38
C398C
8C
PTT
PTT
MIC
MIC
CM
CM
MBL
MBL
GND
GND
ME
ME
HOOK
HOOK
C40
R55
Q10
Q121
2 3
5
C4
L1
D31
IC3
1
161732
33
4849 64
R10
R21
R22
R23
R25
R26
Q6
Q9
BCE
R8
R41
R42R
43
R44
R45
R46
R49
R50
R51
R52
R53
R54
CN
1
CP
1
C15
C16
C19
LCD
1
18
ENCACM
ENCBMIC KEY
DICECLDO5C8C
VOLPOWER
RXDBRIPTT
GNDME
MIC
28 29
TM-271A/271E PC BOARD
Component side
Foil side
Layer 1Layer 2
Component side
Foil side
Layer 1Layer 2
DISPLAY UNIT (X54-3450-10) Component side view (J72-0905-09)
DISPLAY UNIT (X54-3450-10) Foil side view (J72-0905-09) DISPLAY UNIT (X54-3450-10) Foil side view (J72-0905-09)
DISPLAY UNIT (X54-3450-10) Component side view (J72-0905-09)
PC BOARD TM-271A/271E
Ref. No. Address
D2 6F
D3 6J
D4 5O
D19 4G
D20 4P
D21 4E
D22 4I
D23 4J
D24 4K
D25 3G
D26 3F
D27 3E
D28 3I
D29 3J
D30 3K
Ref. No. Address
IC3 11H
Q6 10M
Q9 11M
Q10 10N
Q12 10N
D31 9C
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C20
R40
1
R40
2
R40
3
R408
C28
R409
C29
J1EXT. SP
R41
0R
411
R412
R41
3
R41
4
R418
R41
9
IC33
O G BCEI R42
0
R421
R422C44
C45
C49
R23
6
R237
C50
C20
1
C51
C52
R24
6
R248
C40
0
C401
R24
9
C402
C403
C40
8
R250
C41
0
C411
C41
2
C41
3
C414
C416
C41
7R268
R26
9
C422
C42
3
C424
C425
C82
C83
C23
5
R271
R272
R273
R274
F501
Q35
R275
R27
6
Q36
R277
R27
8R
279
R28
0
C24
9
C25
0
D3
D4
D5
D6
C26
7 C26
8
D40
1
D402
C270 +
+
+
+
++
+
C271
C272
C27
3
Q503
S
S
G D
C274
C27
5
C276
C27
7C
278
F1
C28
1
C47
5
C47
6
IC204
IC205
1
34
5
1
34
5
L503
L504
L505
IC401
D251
R101
R10
5R
106
R11
8
R11
9
E SP
R12
0R
121
R12
2
R12
5
R51
6
R518
R519
R520
R521
R52
3
R52
4
R52
5
R52
7
R5
R52
9
R
R151R152
C51
4C
516
C517
C518
C519
C522
C52
5
C527
C528
C529
R35
R1
R36
R2
R37
R3
C530
C53
1
C533
C536
C15
1
C15
2
C55
9
Q40
2
Q403
C56
0
L201
D50
3
L404
R81
R82
IC252
1
10
IC55
8
CN1
CN
2
CN
5
Q252Q253
DS
GD
S
G
Q254
Q25
5
C10
1 17182
CM MIC K
EYCE DO 8C PO
WER
BRI
GN
DM
IC
ENCA
ENCB DI CL 5C
VOL
RXD
PTT
ME
C13
R200
C15
C16
C17
C18C19
GND
PR9
PR1 PKS
SQC
PKD
5M
CNVSS
RESET
1
7POWER
RXD
TXD
CV
RF
DC
+BE
8T
+
+
+
PKD
GND
PR9
PR1
PKS
SQC
GND
+
1
1011
20
30
TM-271A/271E PC BOARDTX-RX UNIT (X57-685X-XX) Component side view (J72-0906-09) 0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
R210
R404
R21
1R
212
R40
6
R21
3
R407
R21
4
R408
R21
5
R409
R21
6
R21
7
R218R219
IC16
1
1 121324
R605
R60
6
R60
7
R22
0
R221
R22
2
R22
4R
225
R226
J72-0906-09
R227 R228
R22
9
R23
0
R23
1
R232
R233
R23
4
C202 C20
3C204
C205 C20
6
C207
C208
C20
9
R24
7
C40
0
C21
0
C40
4
C21
1
C212
C406
C21
3
C21
4
C40
8
C21
5
C409
C21
6
C217
C218
C60
2
C60
3
C41
0
X401
C605
C411
C41
2
C41
3
C608
C220 C22
2
C225
C22
6
C22
7 C22
8
C613
C614C615
C23
0
C231
C232
C233
C62
3
VR
601
C97
C98
C442
D20
1
D202
Q302
+
+
+
+
Q504 DG
L302
D60
2
D603
L303
L304
C47
3
D608
IC2011
4 5
8
1
4 5
8IC202
IC20
3
L506
L507
L508
L509
Q351
Q354G
SD
R302
R30
3
R304
R30
5
R30
6
R311
R31
2 R313
R314
R315
R316
R31
7
R318
R31
9
R32
0
R32
1
178 14
R322
R323
R32
4
R521
R52
4
R52
7
R528
R52
9
R530
R531
R53
2
C303
R53
3
C304
TH30
1
C305
R34
9
C310
C311
C312
C31
3 C31
4
R350
C315R351C316R
352
R35
3
C317
C318
R354
C31
9
R35
5
R161R162
R164
C128
R165
R166
C32
1
C32
2
C32
3
C32
4
C52
5
R379
C536
C54
1C
542
C35
0
C351
C545
C546
C35
3
C354
C16
1
C35
5
C54
9
C162
C356
C163C164
Q201
C165
C550
C55
2C
553
C554 C555
D30
2
D303
C55
9
C56
0
L401L403
L404
C574
C576
C389
IC5011
45
8
TH97
TH98
R203
R204
R205
R206
R20
7 R208
R20
9
TEMP1
PC
8T
BPF
AFV
8T
TEMP2
1
10
+
+
+
+
+
++
+
+
+
31
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
TX-RX UNIT (X57-685X-XX) Component side view (J72-0906-09)0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
PC BOARD TM-271A/271E
Ref. No. Address
IC33 12B
IC161 1N
IC201 10P
IC202 11P
IC203 12P
IC204 10I
IC205 11I
IC252 10B
IC401 12J
IC501 8J
Q35 13C
Q36 12C
Q201 11O
Q252 12F
Q253 12F
Q254 11D
Q255 10D
Q302 13K
Q351 12N
Q354 9O
Q402 12H
Q403 13H
Q503 6G
Q504 5K
D3 12E
D4 12E
D5 11E
D6 11E
D201 11O
D202 10O
D251 9E
D302 12O
D303 12O
D401 12J
D402 13I
D503 8J
D602 7P
D603 7Q
D608 8L
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C20
R40
1
R40
2
R40
3
R210
R404
R21
1R
212
R40
6
R21
3
R407
R21
4
R408
C28
R21
5
R409
C29
J1EXT. SP
R21
6
R21
7
R218R219
R41
0R
411
IC16
1
1 121324
R605
R412
R60
6
R41
3
R60
7
R41
4
R22
0
R221
R22
2
R418
R22
4R
225
R41
9
R226
J72-0906-09
R227
IC33
O G BCEI
R228
R22
9
R42
0
R421
R422C44
R23
0
C45
R23
1
R232
R233
R23
4
C49
R23
6
R237
C50
C20
1
C51
C52
C202 C20
3C204
C205 C20
6
C207
C208
C20
9
R24
6 R24
7
R248
C40
0
C401
R24
9
C402
C403
C21
0
C40
4
C21
1
C212
C406
C21
3
C21
4
C40
8
R250
C21
5
C409
C21
6
C217
C218
C60
2
C60
3
C41
0
X401
C605
C411
C41
2
C41
3
C608
C414
C220
C416
C22
2
C41
7
C225
C22
6
C22
7 C22
8
C613
R268
C614
R26
9
C615
C422
C42
3
C424
C23
0
C425
C231
C232
C82
C233
C83
C23
5
R271
R272
R273
R274
F501
Q35
R275
R27
6
Q36
R277
C62
3
R27
8
VR
601
R27
9
R28
0
C97
C98
C24
9
C442
C25
0
D3
D4
D5
D6
D20
1
D202
Q302
C26
7 C26
8
D40
1
D402
C270 +
+
+
+
+
+
+
+
+
C271
C272
C27
3
Q503
S
S
G D
C274
Q504 DG
C27
5
C276
C27
7C
278
F1
L302
D60
2
D603
L303
L304
C47
3
D608
C28
1
IC2011
4 5
8
1
4 5
8
C47
5
IC202
C47
6
IC20
3
IC204
IC205
1
34
5
1
34
5
L503
L504
L505
L506
L507
L508
IC401
L509
D251
Q351
Q354G
SD
R101
R10
5R
106
R302
R30
3
R304
R30
5
R30
6
R11
8
R11
9
E SP
R311
R31
2 R313
R12
0
R314
R12
1
R315
R316
R12
2 R31
7
R318
R12
5
R31
9
R32
0
R32
1
178 14
R322
R51
6
R323
R32
4
R518
R519
R520
R521
R52
3
R52
4
R52
5
R52
7
R528
R52
9
R530
R531
R53
2
C303
R53
3
C304
TH30
1C305
R151R152
R34
9
C310
C311
C312C
313 C
314
R350
C315R351C316R
352
R35
3
C317
C318
R354
C31
9
R35
5
R161R162
R164
C128
R165
R166
C51
4
C32
1
C32
2
C51
6
C32
3
C517
C32
4
C518
C519
C522
C52
5
C527
C528
C529
R35
R1
R36
R2
R37
R3
C530
R379
C53
1
C533
C536
C15
1
C15
2
C54
1C
542
C35
0
C351
C545
C546
C35
3
C354
C16
1
C35
5
C54
9
C162
C356
C163C164
Q201
C165
C550
C55
2C
553
C554 C555
D30
2
D303
C55
9
Q40
2
Q403
C56
0
L201
D50
3
L401L403
L404
C574
C576
R81
R82
IC252
1
10
C389
IC5011
45
8
CN1
CN
2
CN
5
TH97
TH98
Q252Q253
DS
GD
S
G
Q254
Q25
5
C10
1 17182
CM MIC K
EYCE DO 8C PO
WER
BRI
GN
DM
IC
ENCA
ENCB DI CL 5C
VOL
RXD
PTT
ME
C13
R200
C15
C16
C17
R203
C18
R204
C19
R205
R206
R20
7 R208
R20
9
GND
PR9
PR1 PKS
SQC
PKD
5M
CNVSS
RESET
1
7POWER
RXD
TXD
CV
RF
DC
+BE
TEMP1
PC
8T
BPF
AFV
8T
TEMP2
+
+
+
PKD
GND
PR9
PR1
PKS
SQC
GND
+
1
1011
20
+
+
+
+
+
++
+
+
+
30 31
TM-271A/271E PC BOARD
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
TX-RX UNIT (X57-685X-XX) Component side view (J72-0906-09) 0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
TX-RX UNIT (X57-685X-XX) Component side view (J72-0906-09)0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
PC BOARD TM-271A/271E
Ref. No. Address
IC33 12B
IC161 1N
IC201 10P
IC202 11P
IC203 12P
IC204 10I
IC205 11I
IC252 10B
IC401 12J
IC501 8J
Q35 13C
Q36 12C
Q201 11O
Q252 12F
Q253 12F
Q254 11D
Q255 10D
Q302 13K
Q351 12N
Q354 9O
Q402 12H
Q403 13H
Q503 6G
Q504 5K
D3 12E
D4 12E
D5 11E
D6 11E
D201 11O
D202 10O
D251 9E
D302 12O
D303 12O
D401 12J
D402 13I
D503 8J
D602 7P
D603 7Q
D608 8L
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CF3
01
CF302
R601
R60
2
R41
5
R41
6
R417
R42
3
R42
4R
425
R42
6
R427
R42
9
R800ANT
R43
0
R43
1
R43
2R
433
R434
R435
R43
6R437
R438R439
R440R44
1
R442
R443
R444
R25
1R252R253
R25
4
R255R256
R25
7
R258
R25
9
C606C607
C418
R260
TC40
1
R261
R262
R263
R26
4
C610
R26
5
C61
1R
266
C42
1
C616
C61
7
C4
C42
7
C42
8
C42
9
C430
C431
C43
2 C
C437
C438
C43
9
C440
C441
C44
4
C251
C252C25
3
C44
8
C254
C255 C44
9
C256
C257
C258 C25
9 C450
C451
C452
C45
3
C260
C454
C261
C45
5
C26
2
C45
6
C26
3
C45
7
C264
C458
C265
C459
Q301
C26
6
C46
0
C461C462
C46
3
C464
C465
Q50
1
B C E
C466
C46
7
D40
8
C46
8
D40
9
L301
C471
D60
5
D606
D607
C474
L501
IC402
Q352
Q353S
DG2
G1
R30
1
L351
BPF
L352
R30
8
L354
L355
R309
L356
L357R
501
IC251
1
78
14
R50
2
R503
R50
4
R310
R505
R50
6
R50
7
R509
R51
0
R325
R526
C30
1
C302
C306
C307
C308
C309
C501
C50
2
C503
C504
C50
5
C50
6
C50
7
C509
R35
6
R358
R359
C51
1
R360
R36
1
XF351
C326
R362
R36
3
R36
4R
365
R36
6
R367
R36
8
R36
9
R370
R371
R372
R373
R374
R37
5
R37
6
C35
7
C35
8
C359
C36
0
C36
1
D30
1
C36
2
C556
C36
3
C55
7
C54
4C
543
C364
C558
C366
C367C368
Q404
C36
9
Q40
5
GS D
Q406
GS
D
Q40
7GS
D
Q408123
5
D501D50
C370
C37
1
C37
2
C373
Q410
C37
4
Q411
C37
5C37
6C377
C378
C37
9
L407
L408
C38
0
C38
1
IC301
1
1011
20
L409
C38
2
C38
3
C38
4
C385
L601
C386
L602
C38
7
L603
C38
8
L410
L604
L605
L4
L414
L415
L416
L417
L418
C39
0
L419
C39
1
L420
L421
L422
L423
Q44
0
Q25
1
D35
1
D352
D35
3
D354
+
S
DG2
G1
1
45
8 +
32
TM-271A/271E PC BOARDTX-RX UNIT (X57-685X-XX) Foil side view (J72-0906-09)0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C30
C33
C34+
C35
C36
C37
C38
C39
IC31
IC32
IC34
IC35
1 345
1 345
C40
C41
C42 C43
R42
6
R427
R428
R42
9 C53
C54
C55
C56
C61
C66
IC66
1
4 5
8
TC40
1
TC40
2
C426
C42
7
Q31
E B
C
Q32
C87
Q33
Q34
C88 C89
C43
4
C90
C43
5
C436
C437
C438
C43
9
R28
1
C440
1
C44
4
D1
D2
2
Q61
L101
D40
3
D404
Q50
1
D40
5
Q502
B
C
E
D406
D407
C279
C28
0
C28
2
C28
3
L501
L502 Q86 GDS G
DS
Q87
R102R103R104
R10
9R
110
R11
1R
114
R50
7
R509
R123
R124
R126
R12
7
D31
R51
1
D32
R512
R513 R51
4
R522
C10
1
C102
C10
4
D61
D62
C50
7
C509C510
C51
1
C51
2 C51
3
C515
C526
R31
R32
R33
R34
R4
R38
R5R
39
R6
R7
R8
R40 R
41
R61
R62
R63
Q406
GS
D
D502
R70
0
IC101
L405
L406
L407
L408
L411
L412
R86
L413
R87
L414
5
L416 R91
R92R93
R94
X86
C14
J72-0906-09
12526
5051 75
76
100
+B E
+
+
+
+
+O
G
I
I
O
G
33
PC BOARD TM-271A/271E
Ref. No. AddressIC31 12QIC32 13OIC34 13MIC35 13LIC66 11L
IC101 11NIC251 12BIC301 12EIC402 13GQ31 5PQ32 4PQ33 12PQ34 12PQ61 4PQ86 10NQ87 10N
Q251 11BQ301 13EQ352 10FQ353 10BQ404 12IQ405 12IQ406 13JQ407 12IQ408 11HQ410 12IQ411 12GQ440 12HQ501 10IQ502 10K
D1 12OD2 11O
D31 4ND32 5QD61 4PD62 4P
D301 13FD351 10DD352 10CD353 9BD354 8BD403 11KD404 11JD405 13KD406 12KD407 12KD408 12HD409 10GD501 10ID502 10JD605 7BD606 5BD607 4B
TX-RX UNIT (X57-685X-XX) Foil side view (J72-0906-09)0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CF3
01
CF302
R601
R60
2
C30
C33
C34+
R41
5
C35
C36
R41
6
C37
R417
C38
C39
IC31
IC32IC
34
IC35
1 345
1 345
C40
C41
C42
R42
3
C43
R42
4R
425
R42
6
R427
R428
R42
9
R800ANT
R43
0
R43
1
R43
2R
433
C53R434 C54
C55
R435
C56
R43
6R437
R438R439
R440R44
1
C61
R442
R443
R444
R25
1
C66R252R253
R25
4
R255R256
R25
7
R258
R25
9
C606
IC66
1
4 5
8
C607
C418
R260
TC40
1
R261
R262
TC40
2
R263
R26
4
C610
R26
5
C61
1R
266
C42
1
C616
C61
7
C426
C42
7
C42
8
C42
9
Q31
E B
C
Q32
C87
Q33
Q34
C88 C89
C430
C431
C43
2
C43
4
C90
C43
5
C436
C437
C438
C43
9
R28
1
C440
C441
C44
4
C251
C252C25
3
C44
8
C254
C255 C44
9
C256
C257
C258 C25
9
D1
D2
C450
C451
C452
C45
3
C260
C454
C261
C45
5
C26
2
C45
6
C26
3
C45
7
C264
C458
C265
Q61
C459
Q301
C26
6
C46
0
C461
L101
C462
D40
3
C46
3
C464
D404
C465
Q50
1
B C E
D40
5
C466
Q502
B
C
E
D406
C46
7
D407
D40
8
C46
8
D40
9
L301
C279
C471
D60
5
D606
D607
C28
0
C474
C28
2
C28
3
L501
L502 Q86 GDS G
DS
Q87
IC402
Q352
Q353S
DG2
G1
R102R103R104
R10
9
R30
1 R11
0R
111
L351
BPF
L352
R30
8
R11
4
L354
L355
R309
L356
L357R
501
IC251
1
78
14
R50
2
R503
R50
4
R310
R505
R50
6
R50
7
R509
R123
R124
R126
R12
7
R51
0
D31
R51
1
D32
R512
R513 R51
4
R325
R522
C10
1
C102
R526
C10
4
C30
1
C302
C306
C307
C308
C309
C501
C50
2
C503
C504
C50
5
D61
C50
6
D62
C50
7
C509
R35
6
C510
R358
R359
C51
1
C51
2 C51
3
C515
R360
R36
1
XF351
C326
R362
R36
3
R36
4R
365
R36
6
R367
R36
8
R36
9
C526
R370
R31
R371
R32
R372
R373
R33
R374
R34
R37
5
R37
6
R4
R38
R5R
39
R6
R7
R8
R40 R
41
C35
7
C35
8
C359
C36
0
C36
1
D30
1
C36
2
C556
C36
3
C55
7
C54
4C
543
C364
C558
R61
C366
R62
C367
R63
C368
Q404
C36
9
Q40
5
GS D
Q406
GS
D
Q40
7GS
D
Q408123
5
D501D502
C370
C37
1
C37
2
C373
R70
Q410
C37
4
Q411
IC101
C37
5C37
6C377
C378
C37
9
L405
L406
L407
L408
C38
0
C38
1
IC301
1
1011
20
L409
C38
2
C38
3
C38
4
C385
L601
C386
L602
C38
7
L603
C38
8
L410
L604
L411
L605
L412
R86
L413
R87
L414
L415
L416
L417
L418
C39
0
L419
C39
1
R91
R92R93
R94
L420
L421
L422
L423
Q44
0
Q25
1
X86
D35
1
D352
D35
3
D354
C14
J72-0906-09
+
S
DG2
G1
1
45
8 +
12526
5051 75
76
100
+B E
+
+
+
+
+O
G
I
I
O
G
32 33
TM-271A/271E PC BOARD PC BOARD TM-271A/271E
Ref. No. AddressIC31 12QIC32 13OIC34 13MIC35 13LIC66 11LIC101 11NIC251 12BIC301 12EIC402 13GQ31 5PQ32 4PQ33 12PQ34 12PQ61 4PQ86 10NQ87 10NQ251 11BQ301 13EQ352 10FQ353 10BQ404 12IQ405 12IQ406 13JQ407 12IQ408 11HQ410 12IQ411 12GQ440 12HQ501 10IQ502 10K
D1 12OD2 11O
D31 4ND32 5QD61 4PD62 4PD301 13FD351 10DD352 10CD353 9BD354 8BD403 11KD404 11JD405 13KD406 12KD407 12KD408 12HD409 10GD501 10ID502 10JD605 7BD606 5BD607 4B
TX-RX UNIT (X57-685X-XX) Foil side view (J72-0906-09)0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
TX-RX UNIT (X57-685X-XX) Foil side view (J72-0906-09)0-10 : TM-271A (K) 0-21 : TM-271A (M2) 0-22 : TM-271A (M3)
0-23 : TM-271A (M4) 2-71 : TM-271E (E)
Component side
Foil side
Layer 1Layer 2Layer 3Layer 4
TM-271A/271E SCHEMATIC DIAGRAM
34
7
6
5
4
3
2
1
A B C D E
-t-t
C42
2
470p
C40
8
22p
R42
7
100k
C21
8
10u6
.3
C44
4
470p
R42
2
10k
C43
80.
5p
C43
747
0p
C21
2
1200
p
R16
1
1.2k
C45
3
220p
C16
4
10u6
.3
C88 4p
C23
2
1000
p
R20
0
680
R227
22k
C22
0
4.7u
6.3
C16
3
1000
p
C441
0.5p
TC
401
10p
R41
6
470
R22
9
680k
C21
5
0.1u
C432
0.3p
R166 1k
8C
C213
3300p
5C
C23
1
1000
p
C23
3
4.7u
6.3
L404
R16
2
1.5k
R419
2.7k
R21
8
82k
C87
3p
R208
1.5k
C45
022
u10
R211
82k
R42647k
R23
3
6.8k
C22
7
0.01
u
R23
0
220k
R421
1.5k
5C
R207*
D404
MA2S304
D40
3
MA
2S30
4
C42
8
470p
5M
C42
1
470p
C41
010
u6.3
C44
847
0p
R20
3
100k
R412
10k
D40
5
MA
2S30
4
2SC4919Q201
C205
0.1u
2SC4738(GR)Q403
2SA1832(GR)Q402
D406MA2S304
R212
82k
L416
C40
3
100p
L201
R205
820
R409
100kD
401
MA
2S11
1
C40
9
0.1u
C43
6
0.75
pR165 1k
R42547k
R43
5
100
R4150
C16
1
1000
p
L405
C41
4
0.1u
D201DAN222
5C
C45
2
470p
5M
R860
C23
0
0.1u
R43
6
120k
R164 1k
C40
2
100p
C20
8
0.01
u
C20
7*
IC201NJM2100V
1 2 3 45678
V+
R430
220
TC
402
10p
C45
5
3p
R87 1k
R43
4
0
R410
8.2k
C41
6
1000
p
R217
220k
C41
3
0.01
u
D2021SS372
C22
8
10u6
.3
R41
3
10k
C411
0.1u
C20
4
2.2u
10
R22
0
15k
C203*
C41
810
00p
C42
5
0.1u
35
R22
1
15k
8C
R40
7
1.5k
C89 4p
R23
29.
1k
C42
3
0.04
7u35
C21
7
10u6
.3
C430 4.5p
R41
7
220k
L417
R401 1k
C40
6
1000
p
R23
1
120k
R43
3
4.7k
8C
C21
4
150p
R41
1
5.6k
R402 1k
R21
3
330k
R214
68k
R414
470
R403 1k
C45
1
470p
C42
4
1u16
IC401MB15A02
11121314151617181920
R21
9
180k
C210
0.1u
C454
6p
C41
7
1000
p
R228
10k
L403
10u
R22
6
100k
D40
8
MA
2S11
1
D402
HZU5ALL
C40
1
100p
C206*
R215
68k
C20
1
0.1u
C90
3p
C22
6
4700
p
C43
15p
C20
2
1000
p
C21
1
820p
C40
4
15u6
.3
C16
2
4.7u
6.3
R21
6
270k
R432
1k
R40
810
R20
4*
C44
9
470p
R418
1k
8C
R43
1
100k
R206
100
C22
5
1u16
R404
10k
R209
240k
R42
0
1k
R22
5
150k
C412
10u6.3
R210
18k
C44
2
10u6
.3
R428
47k
CN2
1
2
3
4
5
6
7
D5DA221
C16
470p
D6DA221
C19
470p
C17
470p
C18
470p
C20
470p
IC205BU4S66
1I/O
2O/I
3VSS
4
5R237
0
R23
6
10k
C235
1u
PR9
PR1
PKS
SQC
5C
R23
4
0
IC204BU4S66
1I/O
2O/I
3VSS
4CONT
5VDD
C222
0.1u
R224
560
PKD
PKD
5C
R93
6.8k
R94 10
kT
H98
100k
C97
1000
p
TH
97
100k
C98
1000
pC216
39p
IC161M62363FP
1 2 3 4 5 6 7 8 9
10 11 12131415161718192021222324
R22
2
10k
IC203BA10324AFV
VCC VEE
C209 68p
C16
5
1u
X401
L77-1944-05
R40
6
10k
C47
5
1000
p
C47
6
1000
p
C47
3
1000
p
C40
0
0.1u
L406
270n
L407
270n
C426
30p
L409
27u
L408
33n
C42
7
8p
L410 27
u
R42
3
220C
429
1p
R429
270
L411
270n
C434150p
L41347n
C43
5
10p
L412
270n L4
14
27u
C43910p
R42
4
100
L415
27u
C44
011
p
L401
L418 33
n
D40
7
1SV
278
IC202BA10358FV
12345 6 7 8
VC
C
SPLATTER FILTER
OR GATE
W/N
I(E
VO
L1)
5C
RX VCO
TX VCO
CV
VOTAGEDROPPED
CHARGE PUMP
MIC AMP/IDC
TCXO
IDC
AGC
BUFFER AMP
CK(CPU54)
DT(CPU53)
DT
(CP
U53
)
HPF
TX-RX UNIT (X57-685X-XX)
W/N
O(E
VO
L2)
DI
PLLE(CPU3)
FR
OO
(EV
OL2
3)
UL(CPU21)
CK
(CP
U54
)
PLL
E(C
PU
3)
8CL
8CL
LIPPLEFILTER
DIGITALPOTENTIOMETER
RX VCO
MO
DI(
EV
OL9
)
TX VCO
KDC
Q402,403
D405,406
BEATSHIFT
BUFFER AMP
8C
D403,404
CV
MIC AMP/SPLATTERFILTER
MOD
MODULATION
8C
1/2Vcc
AGC/MIC MUTE
T/R SW
PLL IC
D407
T/R SW
16.8MHz
BEATSHIFT
MO
D
LIPPLEFILTER
RF AMP
MOD
SUM AMP
PLL SYNTHESIZER
SQC
PKS
PR1
PR9
PKD
SINGLEANALOG SW
SINGLEANALOG SW
MOD BUFFA1/2Vcc
DCAMP
Q201
SURGE ABSORPTION
D5,6
RIPPLEFILTER
1 2 3 4 5 6 7 8 9 10C
LK
NC
3
DAT
ALEFC
NC
4
FO
UTP
NC
5RO
SC
IN
NC
1
OS
CO
UT
VP
VC
C
DO
GN
D
LD NC
2
FIN
2SC4649(N,P)Q404
2SK508NV(K52)Q406
2SJ347Q407
2SK508NV(K52)Q405
2SC5108(Y)Q410
Q408KRX102U
2SC2412KQ440
CONT
VDD
2SK1830Q87
X86
8.00MHzL78-1409-05
2SK1830Q86
8
9
10
11
12
13
141
2
3
4
5
6
7
2VO
LI
2VO
LO
BLO BLI
1VO
LI
1VO
LODO
VD
Fref
RE
SE
T
GN
D
FR
QI
FR
QO
PC
/TV
O
PC
/TV
I
VD
D
LD CLK
DAT
MO
DI
MO
DO
W/N
O
W/N
I
BR
II
BR
IO
QT/DQT(CPU1)
1/2Vcc
EVLLD(CPU8)
UL(CPU21)
PLLE(CPU3)
M1MT(CPU76)
XOUT(CPU11)
XIN(CPU13)
TX DTMF
BSHIFT
P9MT(CPU75)
MICMT(CPU77)
TX/RX (CPU20)
W/NO(EVOL2)
W/NI(EVOL1)
MIC
VOLO(EVOL11)
VOLI(EVOL12)
DT(CPU53)
CK(CPU54)
BRI
PLL
E(C
PU
3)
MO
DO
(EV
OL1
0)
PC
/TV
UL(
CP
U21
)
PC
/TV
O(E
VO
L3)
EV
LLD
(CP
U8)
P9M
T(C
PU
75)
MIC
MT
(CP
U77
)
MO
D
TX
/RX
(C
PU
20)
T:4.16V
T:0.82V
R:1.8mV(BS OFF) 5V(BS ON)
R:4.92VT:3.9mV
R:7.04VR:4.90V
R:0.74VT:0.62V
R:3.37V
R:6.11VR:6.17V
R:7.9V
R:0.71V
R:2.48V
R:7.7V
4.97V
R:4.98V
R:6.96V
T:6.8V
R:0.97V
R:4.96V
R:2.8mV
R:0.1mV
R:0.76V
R:4.05V
R:7.98V
R:7.01V
X57-685 1/3
SCHEMATIC DIAGRAM TM-271A/271E
35
JIHGF
X57-685 2/3
35
C46
110
00p
C37
7
1000
p
R118 0C
511
1000
p
R322
100
R301
4.7k
2SC3357Q502
R371
39k
L50427n
C51
4
1000
p
R10
3
1k
L421
100n
C301
4.7u6.3
C37
6
1000
p
C502
1000p
R353
100k
R32
4
0
C45
8
220p
C268
1u
C36
1
1000
p
R10
1
47k
R37
6
100k
C319
1000p
R50
922
C312 0.1u
R51
4
0
L304
330n
C46
7
1000
p
C51527p
D409 DAN235E
8T
C46
5
22p
C37
2
1000
p
C36
3
0.01
u
R268
1k
R35
9
220k
R31
9
10k
C456
2p
C50
710
00p
C459
1000p
C32
4
0.01
u
C36
6
0.1u
C38
7
1000
p
R36
0
470k
R35
1
470
8R
69
R106 1k
C31
4
0.01
u
34
L302
330n
CNVSS
D303DAN222
R36
6
470
R43
8
22k
C311 0.1u
C36
4
1000
p
R37
0
56
C50
4
1000
p
R510
1.5k
L501
68n
C384
2p
5M
C46
3
1000
p
C15
1
1800
p
5M
R315 18k
C51
982
p
C38
3
1000
p
R369
0
R444
1k
C101
1000p
R1091.5k
IC66AT24C64A10SI18or CAT24WC64JI
1A0
2A1
3A2
4GND
5
6
7
8
R44
2
100
IC402UPB1509GV
1
2
3
4 5
6
7
8R516
0
C10
4
0.1u
R35
6
1k
5M
R31
710
k
5M
R105 1k
L303
330n
8R
R50
4
270
C371
2p
R111
1k
R10
2
47k
R51
1
47
C50
5
1000
p
R43
7
1k
R32
5
33k
C51
310
00p
R503
18
C35
8
1000
p
L101
C32
2
56p
C460
18p
C51
210
00p
5C
L301L34-4554-05
8C
8C
R81
47k
5C
R123
0
C37
8
1000
p
D502DA221
C30
2
1000
p
R70
47k
71
R10
4
1k
L420
150n
R32
1
22k
C351
33p
R50
2
270
R82 0
R314 2.2k
C516820p
L352
560n
C32
6
0.01
u
C509
15p
D50
11S
S35
5
C37
9
1000
p
R151
10k
C51
833
p
R51
3
2.2k
C466
100p
C31
3
15u6
.3
C66 1000p
L50327n
70
C32
3
270p
R51
2
10
8R
C51
0
8p
R364
0
R25
0
12k
R50
5
2.2k
8RC
267
0.47
u
C46
4
1000
p
5M
5M
C36
0
1000
p
C35
7
0.01
u
R152
4.7k
D302DAN222
C46
2
10p
R37
3
47k
L422
56n
C31
6
0.1u
C25
0
0.1u
C37
5
1000
p
C83
0.1u
C46
8
220p
C315
0.1u
L502
68n
C380
100p
L419
100n
R11047k
R44
3
2.2k
R44
1
100
8R
C45
7
1000
p
C50
1
1000
p
R35
2
100
R36
2
470k
C50
610
00p
R31
6
22k
C82
1000
p
C36
2
1000
p
R354
330
R24
9
15k
C503
100p
C51
73p
C37
0
1000
p
R31
810
k
R50
1
1k
C359
8p
R43
9
47k
R36
5
100k
C15
2
3900
p
R36
8
100k
R50
6
10k
L351
820n
R323
120k
R50
7
10
2SC4649(N,P)Q411
2SC3357Q501
C102
0.1u
R30
2
4.7k
R32
0
10k
R269
39k
C31
7
0.1u
R37
5
100k
C35
3
0.01
u
R44
0
100
17
5M
C31
8
0.1u
TON
E
DT
MF
PLL
E
NC
NC
GN
D
CN
VS
S
EV
LLD
BS
HIF
T
RE
SE
T
XO
UT
VS
S
XIN
VC
C
GN
D
NC
PO
WE
R
INT
NC
TX
/RX
UL
NC
NC
EE
PS
DT
EE
PC
K 26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51525354555657585960616263646566676869707172737475
76
P1MT77MICMT
78NC
798RC
808TC
81NC
82SBC
83NC
84NC
85NC
86CM
87MICKEY2
88MICKEY
89VOL
90TEMP2
91TEMP1
92RSSI
93SQIN
94AVSS
95DTMF IN
96VREF
97AVCC
98NC
NC
NC
74 73
R124
47k
R921k
R91
1k
87
R12
7
47k
88
89
2SC2412KQ302
C321
68p
C47
4
1000
p
SQC
PKS
PR
1
5M
68
R12
5
47k
R11
9*R
120
*R12
20
R12
1*
R24
6
150k
R24
7
120k
R24
8
5.6K
C24
9
4.7u
6.3
2SC5488Q351
R355
470
C35
5
18p
C35
4
4.5p
C35
6
3p
R35
8
220
R36
1
180
C367
150p
R36
3
330k
C36
9
3p L354
50n
L355 50n
D35
1
HV
C37
6B
C36
8
27p
R36
7
100 C
373
6p
C37
4
27p
D35
2
HV
C37
6B
3SK318Q352
G1
D
S
G2
3SK318Q353
G1
D
S
G2
R37
2
47k
R37
4
27k
L356
50n
C38
2
27p
C38
6
36p
L357
35.5
n
D35
3
HV
C37
6B
D35
4
HV
C37
6B
C471
10p
C128
1000p
R12
647
k
L423
R11
4
47k
5M
C38
5
8p
C38
1
4.5p
2SK3019Q252
2SK3019Q253
8TC(CPU80)
FM DEMODULATION
TP
TEMPERATURECOMPENSATION
TEMPERATURECOMPENSATION
5M
WIDE(CPU65)
TXDRXD
RF SWITCH
NARROW
NARROW(CPU64)
D351,352
IF SWITCH
RF BPF TUNING
D353,354
IF AMP
50,4
MH
z
D501
8R 8R
IF SWITCH
W/NI(EVOL1)
EEPROM
RF AMP
CPU
AFV
AF MUTE
AF MUTE
AFI(EVOL12)
DIVIDER(HETERO)
AFM(CPU50)
WIDE
RF AMP/DRIVE STAGE
BUFFER AMP
RF BPF TUNING
MIXERRF AMP
8RC(CPU76)
8TC(CPU80)
AMPSW(CPU52)
SPM(CPU51)
BRI
8RC(CPU76)
VOLO(EVOL11)
W/NO(EVOL2)
MIC
PC/TV
RF AMP/DRIVE STAGE
CM
MICKEY
VOL
TV
TX/RX (CPU20)
QT/DQT(CPU1)
EVLLD(CPU8)
TX DTMF
UL(CPU21)
PLLE(CPU3)
XOUT(CPU11)
XIN(CPU13)
POWER
M1MT(CPU76)
P9MT(CPU75)
MICMT(CPU77)
CK(CPU54)
DT(CPU53)
W/NO(EVOL2)
PC/TV
W/NI(EVOL1)
MIC
VOLI(EVOL12)
VOLO(EVOL11)
BRI
SQIN(CPU93)
RSSI(CPU92)
SBC(CPU82)
1/2Vcc
DTMF IN(CPU95)
BSHIFT
IC10130622MAA-B85GP
NC
SQC
PKS
CLKFLS
BSYFLS
TXD
RXD
PTT
NC
NC
NC
EMPFLS
NC
NC
NC
NC
CEFLS
NC
NC
NC
NC
NC
AFM
EEPWPNC
SP
M
AM
PS
WDT
CK
NC
DS
T1
DS
T2
DS
T3
DS
T4
VC
C
NC
VS
S
AD
J
NA
RR
OW
WID
E
NC
NCCL
CE
DO
(to
LCD
)
DI(
from
LC
D)
NC
EN
CB
EN
CA
P9M
T
99
100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
SPM(CPU51)
AMPSW(CPU52)
W/NI(EVOL1)
VOLI(EVOL12)
SW1
SW2
OUT
VCC2VCC1
IN
IN
GND
SDA
SCL
WP
VCC
SQIN(CPU93)
SBC(CPU82)
RESET(CPU10)
INT(CPU18)
1/2Vcc
DTMF IN(CPU95)
RSSI(CPU92)
IC301TK14489V
SCAN
SCAN
SQLIN
FLAMPO
RFIN
GND
Hy_C
FLAMPI
RSSI
AFO
VCC
IF_IN
DEC1
DEC2
PH_S
QUCO
OSC(B)
OSC(E)
NC
MIX_O
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
XF351
49.95MHzL71-0620-05
CF301L72-0993-05
CF302L72-0999-05
R:3.22V
R:4.65V
R:4.27V
R:0.66V
T:0.48V
N:5VW:0V
T:1.23V
R:2.46V
R:4.98V
R:7.99V
R:7.42V
R:4.84VT:5.73V
4.98V
R:0.75V
R:0.56V
R:4.7mV(SQ OFF) 4.97V(SQ ON)
R:1.44V
R:6.34V
R:6.64V
N:0VW:5V
T:1.26V
T:6.8V
T:0.88V
T:7.82VR:1.23V
R:5V
R:2.7V
R:7.84V
T:5.61V
R:2.88VR:5.86VR:3.16V
TX-RX UNIT (X57-685X-XX)
TM-271A/271E SCHEMATIC DIAGRAM
36
K L M N O
X57-685 3/3
-t
C33
1000
p
C55
9
0.1u
R30
5
1.8k
L603
5T
C43
22u1
0L6
01 6T
C52
7
1000
p
R30
4
4.7k
B
5M
R259
12k
C61
7
1000
p
IC33NJM78L05UA
2
COM
3IN
1OUT
2
COM
3IN
1OUT
R25
2
470k
2SA1641(S,T)Q31
R26
1
120k
C26
3
0.03
3u
C55
0.1u
R36
1.5k
5C
R258
2.7k
C29
470p
R52
7
220k
R35
0
27k
BS
B
C603
1000p
C25
7
0.03
9u
R41
330k
C41
22u1
0
R60
6
220
C30
7
0.02
2u
C45
22u1
0
C53
0
0.47
u
C28
110
00p
R52
615
0
R37
0
TH
301
100k
8R
5C
C31
0
0.33
u
R278
12k
C52
1000
p
8T
L604
5T
R34
4.7k
R52
1
100
C44
22u1
0
R27
1
3.3k
8T
C34
330u
25
L509
9.5T
R39
470k
Q254DTC363EU
R25
7
1M
R25
5
5.6k
C27
80.
1u
KTA1664(Y)Q35
68
C54
0.1u
L508
2.5T
D608
1SS355
D602MA4PH633
R306
270k
C60
6
0.5p
R265
5.6k
R30
8
330k
C25
4
0.22
u
SB
73
R275
15k
R33
47k
R27
6
47k
C36
1000
p
C306
1000p
R27
3
12k
C258
0.01u
C53
6
1000
p
C35
0
470p
C274
0.22u
C54
6
0.47
u
R800
F501
R520
18k
R605
15k
C39
0.1u
D61
02DZ18(X,Y)
R531
47k
C27
2
1000
p
R251
47k
70
Q36KRC102S
R51
9
33k
C28
220p
B
C27
6
1000
p
R28
1
0
C49
0.01
u
34
C55
0
68p
C526
680p
R26
6
5.6k
C26
6
1u
C27
7
1000
p
2SA1745(6,7)Q33
C55
7
0.01
u
R61
470
C61
5
22p
8C
R34
9
47k
C25
1
4.7u
6.3
R53
0
1k
D301MA742
Q32KRC102S
C53
1
47u2
5
C38
1000
p
D251MA742
74
C54
5
1000
p
R53
3
0
D606MA742
L605
9.5T
C52
2
1000
p
C61
0
0.5p
C30
8
1000
p
C60
8
27p
71
R277
68k
C27
1
1200
p
CN5
C61
6
1000
p
C42
0.01
u
69
35
C52
9
1000
p
C27
5
1u
C61
1000
p
D321812L110PR
L602
5T
R25
4
2.7k
89
C57
4
1000
p
C554
1000p
R31
2
47k
C53
1000
p
C56
0
1000
p
C61
3
27p
C57
6
220p
C26
5
0.1u
R256
5.6k
C51
10u6
.3
D50
3
02D
Z5.
1(Y
)
C28
047
u16
R60
2
22k
R313
100k
17
5C
C38
9
1000
p
L506
9.5T
C27
94.
7u16
R60
1
22k
R279
4.7k
87
R31
0
1k
R26
3
91k
BS
B
L507
1T
R379
100k
C253
0.22u
C26
2
1000
p
R532
0
D607MA742
R51
8
33
R35
47k
Q34KRC102S
C40
0.1u
R27
4
15k
R62 0
C273
1u
C61
1
2p
C56
1000
p
R52
5
56k
R529
470
R253
0
8T
C55
8
0.01
u
R31
4.7k
C54
9
220p
R40
390k
Q255KRC102S
R528
470
C35
1000
p
C52
5
1000
p
D31
ZS
H5M
A27
R27
2
3.9k
R52
4
470
Q61KRC404RTK
R264120k
R38
330k
8T
2
COM
1IN
3OUT
C55
6
1000
p
C25
2
39p
8R
C50
0.01
u
C25
5
8200
p
8C
C309
0.022u
C28
3
1000
p
C37 1000p
R30
3
22k
IC501TA75W01FU
1
2
3
4VEE
5
6
7
8VCC
D60
5
XB
15A
709
C26
1
0.01
uR
309
3.3k
R26
2
18k
C256
0.018u
R31
1
33k
C60
7
2p
C30
3
4700
p
R26
0
220k
C30
1000
p
C52
822
0p
R32
470
C264
0.033u
R28
0
390
C55
5
5p
R4 1k
R2 100
R3 100
CN1
R7 1k
R5 1k
R8 1k
R6 1k
C13
470p
C14
470p
C10
1000
p
C15
470p
R1 0
D3
DA
221
D2
DA
221
D4
DA
221
D1
DA
221
8C
5C
5M
88
R522330
R523
39k
C533
100p
L505
15n
C54
212
p
C54
1
12p
C55
2
22p
C55
3
3p
C61
4*
C623
3p
C60
2
12p
C60
5
15p
D60
3
XB
15A
709
VR
601
47k
R607
330
PR
9
C30
5
330p
C30
4
330p
1
2
3
4VCC
5
6
7
VEE
2SC2412KQ251
FB
R63
0
D62
MA2S077
1NC
2SUB
3GND
4VOUT
5VCC
IC34BD4732G
1NC
2SUB
3GND
4VOUT
5VCC
J1
F1
FB
C28
2
330u
25
C388
7p
C39
0
9p
C391
16p
2SK1830Q354
PD55003TRQ503
C54
4
15p
C54
3
15p
KEC
8TC
CURRENTPROTECTION
BUFFERAMP
MIC
AUDIOFILTER
SQ
IN(C
PU
93)
B
OVER VOLTAGE
DETECTION
EVOLTAGEREGULATOR(8C)
REVERSECONNECTIONPROTECTION
APC CONTROLLER
FINAL AMP
D603,605
TEMPERATURECOMPENSATION
1/2Vcc
D31
TV
5M
LIMITTER
PC/TV SW
KEC
PC
8T
KEC
Q35,36
APC VOLTAGEDETECT
VOLTAGEDETECTOR(RESET)
D606,607
ANT SW
ANT SW
D1-4
VOLTAGEREGULATOR(5M)
8TC(CPU80)
8RC(CPU76)
D32
DRIVE AMP
RX
1,1A
5C
DETECTIONVOLTAGEDETECTOR(INT)
DC SW (SB)
8C
W/N
O(E
VO
L2)
NOISE AMP/SQL AMP
VOLTAGEPROTECTION
KEC
Q33,34
KEC
8C
SB
OVER VOLTAGEDETECTION
VOLTAGEREGULATOR(5C)
SURGE ABSORPTION
KEC
AF MUTE
AF MUTE
8R
POWER
IC252LA4600
12345678910
PTT
BRI
RXD
POWER
VOL
8C
5C
DO
CL
CE
DI
MICKEY
ENCB
CM
ENCA
MIC
DC SW (SB)
DC SW (8R)
DC SW (8T)
OVER VOLTAGEDETECTION
BRI
AUDIO AMP
RD70HVF1-01Q504
AMPSW(CPU52)
MIC
8TC(CPU80)
SPM(CPU51)
8RC(CPU76)
BRI
PC/TV
VOLO(EVOL11)
W/NO(EVOL2)
2SC2412KQ301
8
9
10
11
12
13
14
IC251BA10324AFV
DTMF IN(CPU95)
INT(CPU18)
RESET(CPU10)
SBC(CPU82)
1/2Vcc
SQIN(CPU93)
INT(CPU18)
RESET(CPU10)
SBC(CPU82)
IC35BD4740G
IC31KIA7808AF
IC32NJM78L05UA
AMPSW(CPU52)
VOLO(EVOL11)
SPM(CPU51)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
C25
9
0.01
u
C26
0
0.01
u
C27
0
4.7u
6.3
T:1.6V
R:4.02V
R:13.8VT:13.45V
T:1.45V
R:4.98V
R:2.7V
R:7.9V
R:13.8V
R:4.98V
T:7.55V
R:13.66VT:12.94V
R:4.31V
R:1.15V
R:3.37V
R:4.98V
R:1.74V
R:3.3V
R:7.9V
T:0.76V
T:7.84V
R:7.95V
T:2.5V
T:1.46V
T:7.85V
R:0.87V
T:4.97V
T:7.84V
TX-RX UNIT (X57-685X-XX)
SCHEMATIC DIAGRAM TM-271A/271E
37
7
6
5
4
3
2
1
TSRQP
X54-345 1/1
C25
1000
p
C15
100p
R43
820
C33
1000
p
C19
680p
C4
100p
D26
B30-2205-05
Q12UMG3N
D21
B30-2205-05
J1
1
8
R41
56
CP1
R90-0724-05
C35
4700
p
D24
B30-2205-05
R54
56
C39
0.1u
D2 C22
1000
p
Q6
KRC102S
C40
0.1u
L1
R44
18k
CN1
R21
10k
D30
B30-2205-05
R46
100
D31
1SS355
C27
1000
p
R51 0
D3
B30-2205-05
R23
10k
R25
56k
D4
C38
470p
D22
B30-2205-05
C36 1u
D23
B30-2205-05R10
1.2k
R48
47k
R26
3.9k
D19
B30-2205-05
R49
56
C32
1000
p
C24
0.1u
C31
1000
p
R42
2.7k
Q10KRA225S
R47
47k
D25
B30-2205-05
R45
33k
C16
100p
BL
NC
NC
NC
SE
G0
SE
G1
SE
G2
SE
G3
SE
G4
SE
G5
SE
G6
SE
G7
SE
G8
SE
G9
SE
G10
SE
G11
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33343536373839404142434445464748
49NC
50KI1
51KI2
52KI3
53NC
54NC
55NC
56VDD
57VDD1
58VDD2
59VSS
60OSC
61DO (to cpu)
62CE
63CL
64DI (from cpu)
C34
4700
p
D29
B30-2205-05
D20
B30-2205-05
R53 0
D27
B30-2205-05
R22
10k
VR1R31-0646-05
R50
56
C30
0.1u
R52 0
D28
B30-2205-05
R8
1k
S1W02-3665-05
SE
G9
SE
G15
SE
G7
SE
G10
SE
G23
SE
G3
SE
G21
SE
G11
CO
M2
SE
G13
CO
M1
RESISTOR
CO
M3
SE
G24
KEY ILLUMINATION
SE
G1
LCD (B38-0885-05)
SE
G17
SE
G27
SE
G29
SE
G4
SE
G26
SE
G31
SE
G5
SE
G14
SE
G18
SE
G19
VARIABLE
SE
G8
SE
G12
SE
G2
SE
G20
LCD ILLUMINATION
DISPLAY UNIT (X54-3450-10)
SE
G22
MR
SE
G0
SE
G16
CO
M0
SE
G6
SE
G28
SE
G25
SE
G30
ENCODER
LCD CONTROLLER
KEY BACKLIT SWITCH
DIMMERFUNCTIONSWITCH
LCD BACKLIT
D2-4
LCD BACKLIT SWITCH
DC SWITCH
KEY BACKLIT
D19-30
MHz & MENUADJUASTMENT
ON/OFF & VOLUMEADJUASTMENT
144-148MHz
144-146MHz
TM-271A
TM-271E E
K
M3
M2
M4
X57-685X-XX
0-23
0-10
0-21
0-22
2-71
Func
CALLVFO
REV
CMHOOK
MICMEPTTGND8CMBL(Key A)
ENCODER A
CM
ENCODER B
MIC KEY
DI(from LCD)
CE
CL
DO
5C
8C
VOL
POWER
RXD
BRI
PTT
GND
ME
MIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
2SB1132(Q,R)Q9
IC3
LC75854Wor
PT6554LQ
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16S
EG
28
SE
G29
SE
G30
SE
G31NC
NC
NC
CO
M0
CO
M1
CO
M2
CO
M3
KS
1
KS
2
NC
NC
NC
SEG12SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG20
SEG22
SEG23
SEG24
SEG25
SEG26SEG27
C203
0.027u
0.027u
0.047u
0.027u
0.027u
1000p
1000p
680p
1000p
C206
1000p 0.022u
0.022u
0.022u
0.022u
C207
0.039u
NO
C614
3p
NO
NO
NO
0
0
R119
0
NO
0 0
0
NO
R120
NO
NO
0
R121
0
NO
NO
NO
10k
18k
R204
18k
18k
18k
1M
750k
750k
750k
750k
R207
R55
0
7.30V
7.90V 7.10V
4.96V
4.94V
4.96V
5.02V
7.90V
4.80V(BRIGHTNESS MAX)0V(BRIGHTNESS OFF)
Note : The components marked with a dot (•) are parts of layer 1.
-t
-t-t
C42
2
470p
C33
1000
p
C55
9
0.1u
35
C40
8
22p
R42
7
100k
R30
5
1.8k
C46
110
00p
C37
7
1000
p
L603
5T
C21
8
10u6
.3
C43
22u1
0
R118 0
C44
4
470p
L601 6T
C52
7
1000
p
R42
2
10k
C43
80.
5p
R30
4
4.7k
C51
1
1000
p
C43
747
0p
C21
2
1200
p
R16
1
1.2k
C45
3
220p
R322
100
B
5M
C16
4
10u6
.3
R259
12k
R301
4.7k
C61
7
1000
p
IC33NJM78L05UA
2
COM
3IN
1OUT
2
COM
3IN
1OUT
2SC3357Q502
R371
39k
C88 4p
R25
2
470k
L50427n
2SA1641(S,T)Q31
R26
1
120k
C26
3
0.03
3u
C55
0.1u
R36
1.5k
C23
2
1000
p
5C
C51
4
1000
p
R20
0
680
R10
3
1k
R258
2.7k
L421
100n
R227
22k
C29
470p
C301
4.7u6.3
C37
6
1000
p
R52
7
220k
C502
1000p
R35
0
27k
C22
0
4.7u
6.3
R353
100k
BS
B
C16
3
1000
p
C603
1000p
C441
0.5p
R32
4
0
C45
8
220p
C25
7
0.03
9u
R41
330k
TC
401
10p
R41
6
470
C41
22u1
0
C268
1uR22
9
680k
C36
1
1000
p
C21
5
0.1u
R60
6
220
C432
0.3p
R10
1
47k
R37
6
100k
C30
7
0.02
2u
R166 1k
C45
22u1
0
C53
0
0.47
u
8C
C319
1000p
C28
110
00p
R50
922
C213
3300p
C312 0.1u
R52
615
0
R37
0
TH
301
100k
R51
4
0
L304
330n
8R
5C
5C
C23
1
1000
p
C23
3
4.7u
6.3
C31
0
0.33
u
C46
7
1000
p
L404
R16
2
1.5k
R278
12k
C52
1000
p
C51527p
8T
D409 DAN235E
L604
5T
8T
R419
2.7k
R21
8
82k
C46
5
22p
R34
4.7k
R52
1
100
C87
3p
C44
22u1
0
C37
2
1000
p
C36
3
0.01
u
R268
1k
R35
9
220k
R31
9
10k
C456
2p
C50
710
00p
R208
1.5k
C459
1000p
R27
1
3.3k
8T
C34
330u
25
C32
4
0.01
u
C45
022
u10
L509
9.5T
R211
82k
R39
470k
Q254DTC363EU
C36
6
0.1u
R25
7
1M
C38
7
1000
p
R42647k
R23
3
6.8k
R36
0
470k
R25
5
5.6k
C27
80.
1u
KTA1664(Y)Q35
C22
7
0.01
u
R23
0
220k
R421
1.5k
R35
1
470
68
5C
R207*
D404
MA2S304
C54
0.1u
D40
3
MA
2S30
4
L508
2.5TC42
8
470p
8R
69
5M
D608
1SS355
C42
1
470p
R106 1k
C31
4
0.01
u
34
D602MA4PH633
R306
270k
L302
330n
CNVSS
C41
010
u6.3
C60
6
0.5p
D303DAN222
C44
847
0p
R36
6
470
R43
8
22k
R20
3
100k
R265
5.6k
R30
8
330k
C311 0.1u
C25
4
0.22
u
C36
4
1000
p
SB
73
R275
15k
R33
47k
R27
6
47k
R37
0
56
C36
1000
p
R412
10k
D40
5
MA
2S30
4
2SC4919Q201
C306
1000p
R27
3
12k
C205
0.1u
C258
0.01u
C50
4
1000
p
2SC4738(GR)Q403
C53
6
1000
p
R510
1.5k
2SA1832(GR)Q402
L501
68n
C384
2p
5M
C35
0
470p
C274
0.22u
C46
3
1000
p
C15
1
1800
p
D406MA2S304
5M
R212
82k
L416
R315 18k
C54
6
0.47
u
R800
F501
C40
3
100p
R520
18k
R605
15k
C51
982
p
C38
3
1000
p
R369
0
R444
1k
C101
1000p
R1091.5k
C39
0.1u
IC66AT24C64A10SI18or CAT24WC64JI
1A0
2A1
3A2
4GND
5
6
7
8
D61
02DZ18(X,Y)
L201
R531
47k
R44
2
100
C27
2
1000
p
R251
47k
R205
820
R409
100k
70
IC402UPB1509GV
1
2
3
4 5
6
7
8
D40
1
MA
2S11
1
R5160
Q36KRC102S
R51
9
33k
C28
220p
C40
9
0.1u
B
C10
4
0.1u
C27
6
1000
p
R28
1
0
R35
6
1k
5M
R31
710
k
C49
0.01
u
34
C55
0
68p
C526
680p
5M
R105 1k
C43
6
0.75
p
L303
330n
R165 1k
R26
6
5.6k
C26
6
1u
R42547k
8R
R43
5
100
C27
7
1000
p
2SA1745(6,7)Q33
C55
7
0.01
u
R61
470
R4150
C16
1
1000
p
C61
5
22p
L405
8C
R34
9
47k
R50
4
270
C371
2pC
414
0.1u
R111
1k
C25
1
4.7u
6.3
R53
0
1k
R10
2
47k
D301MA742
Q32KRC102S
R51
1
47
C53
1
47u2
5
C38
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BL
NC
NC
NC
SE
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SE
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G6
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18
19
20
21
22
23
24
25
26
27
28
29
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31
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50KI1
51KI2
52KI3
53NC
54NC
55NC
56VDD
57VDD1
58VDD2
59VSS
60OSC
61DO (to cpu)
62CE
63CL
64DI (from cpu)
C34
4700
p
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R2 100
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27
28
29
30
31
32
33
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35
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51525354555657585960616263646566676869707172737475
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84NC
85NC
86CM
87MICKEY2
88MICKEY
89VOL
90TEMP2
91TEMP1
92RSSI
93SQIN
94AVSS
95DTMF IN
96VREF
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8
220
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1
180
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330k
C36
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D35
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S
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R37
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47k
R37
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27k
L356
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16p
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10pS1
W02-3665-05
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4
47k
5M
D40
7
1SV
278
IC202BA10358FV
12345 6 7 8
VC
C
2SK1830Q354
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5
8p
C38
1
4.5p
2SK3019Q252
2SK3019Q253
PD55003TRQ503
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4
15p
C54
3
15p
KEC
SPLATTER FILTER
8TC(CPU80)
FM DEMODULATION
OR GATE
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VO
L1)
TP
5C
8TC
RX VCO
TX VCO
CV
VOTAGEDROPPED
CHARGE PUMP
MIC AMP/IDC
TCXO
CURRENTPROTECTION
IDC
AGC
BUFFERAMP
BUFFER AMP
TEMPERATURECOMPENSATION
MIC
CK(CPU54)
TEMPERATURECOMPENSATION
DT(CPU53)
5M
AUDIOFILTER
SQ
IN(C
PU
93)
WIDE(CPU65)
B
TXD
DT
(CP
U53
)
HPF
RXD
TX-RX UNIT (X57-685X-XX)
OVER VOLTAGE
DETECTION
EVOLTAGEREGULATOR(8C)
W/N
O(E
VO
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RF SWITCH
REVERSECONNECTIONPROTECTION
DI
PLLE(CPU3)
NARROW
FR
OO
(EV
OL2
3)
APC CONTROLLER
UL(CPU21)
CK
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D603,6058CL
LIPPLEFILTER
DIGITALPOTENTIOMETER
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1/2Vcc
D31
TV
RX VCO
MO
DI(
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TX VCO
5M
D351,352
LIMITTER
KDC
PC/TV SW
IF SWITCH
RF BPF TUNING
KEC
PC
D353,354
IF AMP
8T
KEC
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Q35,36
APC VOLTAGEDETECT
D405,406
BEATSHIFT
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VOLTAGEDETECTOR(RESET)
D606,607
8C
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50,4
MH
z
ANT SW
ANT SW
D1-4
VOLTAGEREGULATOR(5M)
8TC(CPU80)
8RC(CPU76)
D32
CV
D501
DRIVE AMP
8R
RX
8R
IF SWITCH
1,1A
W/NI(EVOL1)
EEPROM
RF AMP
MIC AMP/SPLATTERFILTER
5C
MOD
DETECTION
MODULATION
8C
VOLTAGEDETECTOR(INT)
1/2Vcc
CPU
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AFV
AF MUTE
AF MUTE
W/N
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VO
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NOISE AMP/SQL AMP
T/R SW
AFI(EVOL12)
DIVIDER(HETERO)
VOLTAGEPROTECTION
PLL IC
KEC
AFM(CPU50)
D407
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WIDE
SURGE ABSORPTION
KEC
RF AMP/DRIVE STAGE
AF MUTE
MOD
BUFFER AMP
SUM AMP
RF BPF TUNING
AF MUTE
MIXERRF AMP
8R
PLL SYNTHESIZER
SE
G9
SE
G15
SE
G7
SE
G10
SE
G23
SE
G3
SE
G21
SE
G11
CO
M2
SE
G13
CO
M1
RESISTOR
CO
M3
SE
G24
KEY ILLUMINATION
SE
G1
LCD (B38-0885-05)
SE
G17
SE
G27
SE
G29
SE
G4
SE
G26
SE
G31
SE
G5
SE
G14
SE
G18
SE
G19
VARIABLE
SE
G8
SE
G12
SE
G2
SE
G20
LCD ILLUMINATION
DISPLAY UNIT (X54-3450-10)
SE
G22
MR
SE
G0
SE
G16
CO
M0
SE
G6
SE
G28
SE
G25
SE
G30
POWER
SQC
PKS
PR1
PR9
PKD
8RC(CPU76)
IC252LA4600
12345678910
PTT
BRI
RXD
POWER
VOL
8C
5C
DO
CL
CE
DI
MICKEY
ENCB
CM
ENCA
MIC
ENCODER
8TC(CPU80)
AMPSW(CPU52)
SPM(CPU51)
BRI
8RC(CPU76)
VOLO(EVOL11)
W/NO(EVOL2)
MIC
PC/TV
LCD CONTROLLER
KEY BACKLIT SWITCH
DIMMERFUNCTIONSWITCH
LCD BACKLIT
D2-4
LCD BACKLIT SWITCH
DC SWITCH
KEY BACKLIT
D19-30
MHz & MENUADJUASTMENT
ON/OFF & VOLUMEADJUASTMENT
SINGLEANALOG SW
SINGLEANALOG SW
DC SW (SB)
DC SW (8R)
DC SW (8T)
MOD BUFFA1/2Vcc
DCAMP
Q201
RF AMP/DRIVE STAGE
OVER VOLTAGEDETECTION
SURGE ABSORPTION
D5,6
BRI
CM
MICKEY
VOL
TV
AUDIO AMP
RIPPLEFILTER
144-148MHz
144-146MHz
TM-271A
TM-271E E
K
M3
M2
M4
X57-685X-XX
0-23
0-10
0-21
0-22
2-71
1 2 3 4 5 6 7 8 9 10C
LK
NC
3
DAT
ALEFC
NC
4
FO
UTP
NC
5RO
SC
IN
NC
1
OS
CO
UT
VP
VC
C
DO
GN
D
LD NC
2
FIN
2SC4649(N,P)Q404
2SK508NV(K52)Q406
2SJ347Q407
2SK508NV(K52)Q405
2SC5108(Y)Q410
Q408KRX102U
2SC2412KQ440
CONT
VDD
2SK1830Q87
X86
8.00MHzL78-1409-05
2SK1830Q86
8
9
10
11
12
13
141
2
3
4
5
6
7
2VO
LI
2VO
LO
BLO BLI
1VO
LI
1VO
LODO
VD
Fref
RE
SE
T
GN
D
FR
QI
FR
QO
PC
/TV
O
PC
/TV
I
VD
D
LD CLK
DAT
MO
DI
MO
DO
W/N
O
W/N
I
BR
II
BR
IO
QT/DQT(CPU1)
1/2Vcc
EVLLD(CPU8)
UL(CPU21)
PLLE(CPU3)
M1MT(CPU76)
XOUT(CPU11)
XIN(CPU13)
TX DTMF
BSHIFT
P9MT(CPU75)
MICMT(CPU77)
TX/RX (CPU20)
W/NO(EVOL2)
W/NI(EVOL1)
MIC
VOLO(EVOL11)
VOLI(EVOL12)
DT(CPU53)
CK(CPU54)
BRI
PLL
E(C
PU
3)
MO
DO
(EV
OL1
0)
PC
/TV
UL(
CP
U21
)
PC
/TV
O(E
VO
L3)
EV
LLD
(CP
U8)
P9M
T(C
PU
75)
MIC
MT
(CP
U77
)
MO
D
TX
/RX
(C
PU
20)
TX/RX (CPU20)
QT/DQT(CPU1)
EVLLD(CPU8)
TX DTMF
UL(CPU21)
PLLE(CPU3)
XOUT(CPU11)
XIN(CPU13)
POWER
M1MT(CPU76)
P9MT(CPU75)
MICMT(CPU77)
CK(CPU54)
DT(CPU53)
W/NO(EVOL2)
PC/TV
W/NI(EVOL1)
MIC
VOLI(EVOL12)
VOLO(EVOL11)
BRI
SQIN(CPU93)
RSSI(CPU92)
SBC(CPU82)
1/2Vcc
DTMF IN(CPU95)
BSHIFT
IC10130622MAA-B85GP
NC
SQC
PKS
CLKFLS
BSYFLS
TXD
RXD
PTT
NC
NC
NC
EMPFLS
NC
NC
NC
NC
CEFLS
NC
NC
NC
NC
NC
AFM
EEPWPNC
SP
M
AM
PS
WDT
CK
NC
DS
T1
DS
T2
DS
T3
DS
T4
VC
C
NC
VS
S
AD
J
NA
RR
OW
WID
E
NC
NCCL
CE
DO
(to
LCD
)
DI(
from
LC
D)
NC
EN
CB
EN
CA
P9M
T
99
100
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
SPM(CPU51)
AMPSW(CPU52)
W/NI(EVOL1)
VOLI(EVOL12)
SW1
SW2
OUT
VCC2VCC1
IN
IN
GND
RD70HVF1-01Q504
AMPSW(CPU52)
MIC
8TC(CPU80)
SPM(CPU51)
8RC(CPU76)
BRI
PC/TV
VOLO(EVOL11)
W/NO(EVOL2)
2SC2412KQ301
8
9
10
11
12
13
14
IC251BA10324AFV
DTMF IN(CPU95)
INT(CPU18)
RESET(CPU10)
SBC(CPU82)
1/2Vcc
SQIN(CPU93)
INT(CPU18)
RESET(CPU10)
SBC(CPU82)
IC35BD4740G
IC31KIA7808AF
IC32NJM78L05UA
AMPSW(CPU52)
VOLO(EVOL11)
SPM(CPU51)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Func
CALLVFO
REV
CMHOOK
MICMEPTTGND8CMBL(Key A)
ENCODER A
CM
ENCODER B
MIC KEY
DI(from LCD)
CE
CL
DO
5C
8C
VOL
POWER
RXD
BRI
PTT
GND
ME
MIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
SDA
SCL
WP
VCC
SQIN(CPU93)
SBC(CPU82)
RESET(CPU10)
INT(CPU18)
1/2Vcc
DTMF IN(CPU95)
RSSI(CPU92)
IC301TK14489V
SCAN
SCAN
SQLIN
FLAMPO
RFIN
GND
Hy_C
FLAMPI
RSSI
AFO
VCC
IF_IN
DEC1
DEC2
PH_S
QUCO
OSC(B)
OSC(E)
NC
MIX_O
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
2SB1132(Q,R)Q9
IC3
LC75854Wor
PT6554LQ
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16S
EG
28
SE
G29
SE
G30
SE
G31NC
NC
NC
CO
M0
CO
M1
CO
M2
CO
M3
KS
1
KS
2
NC
NC
NC
SEG12SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG20
SEG22
SEG23
SEG24
SEG25
SEG26SEG27
C203
0.027u
0.027u
0.047u
0.027u
0.027u
1000p
1000p
680p
1000p
C206
1000p 0.022u
0.022u
0.022u
0.022u
C207
0.039u
NO
C614
3p
NO
NO
NO
0
0
R119
0
NO
0 0
0
NO
R120
NO
NO
0
R121
0
NO
NO
NO
10k
18k
R204
18k
18k
18k
1M
750k
750k
750k
750k
R207
XF351
49.95MHzL71-0620-05
CF301L72-0993-05
CF302L72-0999-05
C25
9
0.01
u
C26
0
0.01
u
C27
0
4.7u
6.3
R55
0
R:3.22V
R:4.65V
T:1.6V
R:4.02V
R:4.27V
T:4.16V
R:13.8VT:13.45V
T:1.45V
R:0.66V
T:0.48V
R:4.98V
R:2.7V
R:7.9V
R:13.8V
T:0.82V
N:5VW:0V
T:1.23V
R:2.46V
R:4.98V
R:1.8mV(BS OFF) 5V(BS ON)
T:7.55V
R:4.98V
R:7.99V
R:4.92VT:3.9mV
R:13.66VT:12.94V
R:7.04V
R:7.42V
R:4.90V
R:0.74VT:0.62V
R:4.31V
R:3.37V
R:6.11VR:6.17V
R:4.84VT:5.73V
4.98V
R:7.9V
R:0.75V
R:1.15V
R:0.71V
R:0.56V
R:3.37V
R:4.7mV(SQ OFF) 4.97V(SQ ON)
R:2.48V
R:1.44V
R:7.7V
R:6.34V
R:6.64V
R:4.98V
N:0VW:5V
T:1.26V
R:1.74V
T:6.8V
R:3.3V
T:0.88V
4.97V
R:4.98V
R:6.96V
T:6.8V
T:7.82VR:0.97V
R:7.9V
R:4.96V
T:0.76V
T:7.84V
R:1.23V
R:7.95V
R:2.8mV
R:0.1mV
R:0.76V
R:4.05V
R:7.98V
R:5V
R:7.01V
R:2.7V
7.30V
7.90V 7.10V
4.96V
4.94V
4.96V
5.02V
R:7.84V
T:5.61V
T:2.5V
T:1.46V
T:7.85V
R:0.87V
T:4.97V
R:2.88VR:5.86VR:3.16V
7.90V
T:7.84V
4.80V(BRIGHTNESS MAX)0V(BRIGHTNESS OFF)
TM-271A/271E
38
Q4402SC2412K
DT
P1M
IC202BA10358FV
SB
D201DAN222
D2021SS372
KI1
IC203BA10324
(3/4)
IC203BA10324AFV
(1/4)
D/ACONV
MIC KEY
M
PLLE
TCXOMOD
AGCDET
TX-RX UNIT (X57-685X-XX)
CKLOOPFILTER
KS1
8C
ELV
BUFMIC
MUTECE
8CL
IC201NJM2100V
PLL IC
8RC
CK
RF
SBC
SUM
SW
5C
CM(MIC KEY2)
DI
V
MIC
8C
LIPPLEFILTER
D2~4B30-2205-05
KEY BACK LIGHT
ENCA
SW
BSH
KS2
RXD
HOOK(RXD)
AGC
DTMF
Q2012SC4919
VCO
Q4032SC4738(GR)
TCXO
D/ACONV
WID
POWER
NAR
MIC
IC161 M62363FP
(3/8)
CHARGEPUMP
CHARGEPUMP16.8MHz
IC161M62363FP(8/8)
8TC
BRI
SQIN
8C
CM
SPLATTERFILTER
8C
8C
MIC KEY
MIC/IDC
Q4042SC4649(N,P)
16.8MHz
MIC
PTT(TXD)
DO
ENCB
KI3
ME
Q4072SJ347
IC401MB15A02
LD
DT
VOL
T
CV
5C
Q4022SA1832(GR)
CL
KI2
DTM
Q10KRA225S
5C
Q6KRC102S
VPLLE
DISPLAY UNIT (X54-3450-10)
Q2SK50
MICMT
D19~30B30-2205-05
LCD BACK LIGHTQ9
2SB1132(Q,R)Q12
UMG3N
SW
MBL
BRI
IC3LCD DRIVERLC75854W/LC75854W/
CLCE
DICOM0~3SEG0~31
MBL
DO
LCD
GNDMEMIC
Q12SK1824
X401
QT/D
TX/R
SPMAFM
AMP
PTT(TXD)
Func
CALLVFO
REV
MR
KI1KI2KI3 KS2
KS1
SQ
CP
KS
PR
1P
R9
PK
D
VR1R31-0649-05
VIARIABLE RESISTORPOWER
D/ACONV
IC161M62363FP
(4/8)
P9MT
P1MT
PKD1200
PKD9600
VOL
P9M
QT/DQTPKD9600
IC205BU4S66
SW
IC204BU4S66
SW
ENCB
MHz
ENCAS1W02-3665-05
ENCODER
PKD1200
BLOCK DIAGRAM
TM-271A/271E
39
BLOCK DIAGRAM
DT
Q332SA1745(6,7)
CF302(NARROW)
D303DAN222
P1MT
SW
8TC
AVR5V
X35149.95MHz
8RC
OVERVOLTAGEDETECT
IC66AT24C64A10SI18 orCAT24WC64J1
RF
IC402UPB1509GV
DIVIDER
D302DAN222
PC
ANT
Q872SK1830
IC203BA10324AFV
(3/4)
BUFF
Vg
V
BUFFER
D301MA742
PLLE
INT
Vg
450kHz
SW
BPF
IC252LA4600
NOISE
D/ACONV
IC501TA75W01FU(1/2)
IC501TA75W01FU(2/2)
WIDE
ANT SW
ELVLLDSW
POWER
PREDRIVEAMP
RF
BUFF
Q3512SC5108(Y)
VCOMOD
CL
SW
CF301(WIDE)
D351,352HVC376B
8RC
CK
IC251 BA10324AFV
Q3533SK318
SBC
TXRX
8C
IC31KIA7808AF
AVR8V
TEMP2
MIX
SW
5M
AFFILTER
TXVCO
SW
Q4112SC4649
(N,P)Q410
2SC5108(Y)
SW
8T8CL
D353,354HVC376B
5CBSHIFT
BSHIFT
8R
SW
SW
Q504RD70HVF1
E
Q35KTA1664(Y)
D607MA742
D606MA742
50.4MHz
B
DET
SW
8R
IC32NJM78L05UA
5M
SW
VCOMOD
R)
WIDE
NARROW
EEPROM
Q252,2532SK3019
8R
RESET
NARROW
D/ACONV
IC33NJM78L05UA
AVR
IC161 M62363FP
(7/8)
3FP
BPF
Q36KRC102S
Q254DTC363EU
IC161M62363FP(2/8)
8T
Q4062SK508NV(K52)
IC35BD4740G
5C
RESET
X86
IC161M62363FP(5/8)(6/8)
IC161M62363FP
(1/8)
IC34BD4732G
DTMF/BEEP
8TC
SQIN
Q32KRC102S
SBC
Q2512SC2412K
PTT
FINALAMP
8C
SPM
MICMT
SIGNALQ34
KRC102S
8T
DRIVEAMP
SB
+B
IFDEMODULATOR
AFPA
AFM
SW
CPUIC101
30622MAA-B85GP
MCF
INT
Q4072SJ347
D602MA4PH633D603,605XB15A709
SW
8T
8T
Q61KRC404RTK
Q3022SC2412K
TRIPLER
INT
TEMP1
APCCONTROL
SW
RXD
TCXOMOD
D/ACONV
CM
CV
R) LPF
8R
POW.DET
POW.DET
SW
D/ACONV
RF
Q503PD55003
Q408KRX102U
Q862SK1830
T/RSW
HPF
DTMF
5M
Q3012SC2412K IF
Q5012SC3357
D409DAN235E
EXT.SP
16.8MHz
Q3523SK318
Q312SA1641(S,T)
RXVCO
RF BPFTUNE
RF BPFTUNE
8R
SP
Q5022SC3357
Q4052SK508NV(K52)
EEPWPEEPCKEESDT
IC301
SWQ255
KRC102S
AMPSW
Q3542SK1830
SW8T
QT/DQT
TX/RX
SPMAFM
AMPSW
CLCEDI
RSSISQIN
8C
8M
PKSSQC
ENCAENCBVOL
P9MT
DOMICKEY2MICKEY
RESET
TM-271A/271E
40
LEVEL DIAGRAM
To make
G2Q351
3
IC201 IC203
Q353 XF1
7
IC202 IC202
BPF BPF
6 8Q406
ANT
X54-345
G2
91
To make measurements in the RF section, connect the RF level meter.In the RF section, use a 0.01µF coupling capacitor.(The display shows the SSG input value required to obtain 12dB SINA
1
G1
2 2
S
Q352
10
DisplayUnit
D
IC161
TX-RX U
MIC
To make measurements in the AF section, connect the AC level meter.AG is set so that MIC input becomes 3kHz/1.5kHz (Wide/Narrow) DEV at 1kHz MOD.
D
CF1/CF2
450kHz
7
IC203
TX-RX Unit
S
IC301
5
49.95MHz
9
IC201
G1
20
1
Center Frequency
W : –124.0dBmN : –123.5dBm
W : –119.5dBmN : –119.0dBm
W : –104.7dBmN : –103.7dBm
W : –103.9dBmN : –103.4dBm
W : 0.75VrmsN : 0.36Vrms
W : 0.30VrmsN : 0.18Vrms
W : –112.3dBmN : –111.5dBm
W : –92.1dBmN : –90.7dBm
W : –77.6dBmN : –74.2dBm
W/N5.0mVrms (2.0mVrms for E-type)
W/N0.12Vrms
W/N1.40Vrms
W/N1.16Vrms
W/N1.26Vrms
W/N1.04Vrms
Receiver Section
Transmitter Section
TM-271A/271E
41
LEVEL DIAGRAM
S
To make measurements in the RF section, connect the RF Wattmeter (50Ω).
D
Q504
To make measurements in the AF section, connect the AC level meter.(ANT input : –53dBm, 1kHz FM, 3kHz DEV (Wide)/1.5kHz DEV (Narrow))The AF output level is adjusted for a 0.64V/8Ω by the front panel AF VOL control.
Q406
vel meter.
12dB SINAD.)
TX-RX Unit
Q4101
11
Q411
FINAL Amp
Q503
2
D409
TX-RX Unit
S
IC402
Audio Frequency
Q501D
TX-RX Unit (VCO)
CF1/CF2
450kHz
Q502
G
IC301
D602
G
ANT
–5.3dBm –10dBm –4.8dBm 12.5dBm 26.5dBm–8.8dBm 60W
W : –85.0dBmN : –84.5dBm
W/N0.33Vrms
W/N0.32Vrms
W/N0.26Vrms
W/N0.30Vrms
W/N0.31Vrms
W/N10mVrms
W/N0.50Vrms
W/N0.64Vrms
14 J1
IC161
12Q251
89 12
8oh
m
10
IC251
7
IC252IC251
5 1
IC251IC251
1113
KENWOOD CORPORATION2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan
KENWOOD U.S.A. CORPORATIONP.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745, U.S.A.
KENWOOD ELECTRONICS CANADA INC.6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
KENWOOD ELECTRONICS DEUTSCHLAND GMBHRembrücker Str. 15, 63150 Heusenstamm, Germany
KENWOOD ELECTRONICS BELGIUM N.V.Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
KENWOOD ELECTRONICS FRANCE S.A.13, Boulevard Ney, 75018 Paris, France
KENWOOD ELECTRONICS U.K. LIMITEDKENWOOD House, Dwight Road, Watford, Herts., WD18 9EB United Kingdom
KENWOOD ELECTRONICS EUROPE B.V.Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
KENWOOD ELECTRONICS ITALIA S.p.A.Via G. Sirtori, 7/9 20129 Milano, Italy
KENWOOD IBERICA S.A.Bolivia, 239-08020 Barcelona, Spain
KENWOOD ELECTRONICS AUSTRALIA PTY. LTD.(A.C.N. 001 499 074)16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113 Australia
KENWOOD ELECTRONICS (HONG KONG) LTD.Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Kwai Fong, N.T., Hong Kong
KENWOOD ELECTRONICS TECHNOLOGIES(S) PTE LTD.Sales Marketing Division1 Ang Mo Kio Street 63, Singapore 569110
TM-271A/ESPECIFICATIONS
GENERALFrequency Range
TX ............................................................................................ K,M4 : 144~148MHz E : 144~146MHz M2,M3 : 136~174MHzRX ............................................................................................ K,E,M2,M3 : 136~174MHz M4 : 144~148MHz
Mode .......................................................................................... F3E (FM)Antenna Impedance .................................................................. 50ΩUsable Temperature Range ...................................................... –20°C~+60°C (–4°F~+140°F)Power Supply ............................................................................. 13.8V DC± 15% (11.7~15.8V)Grounding Method .................................................................... Negative groundCurrent
Transmit (max.) ...................................................................... K,E,M2,M3 : 13A or less M4 : 8A or lessReceive (at 2W output) ......................................................... 1.0A or less
Frequency Stability (–20°C~+60°C) ......................................... Within ± 2.5ppmDimensions (W x H x D projections not included) ..................... 160 x 43 x 137 mm / 6-5/16 x 1-11/16 x 5-13/32 inchWeight ........................................................................................ Approx. 1.2kg / 2.6lb
RECEIVERCircuitry ....................................................................................... Double conversion superheterodyneIntermediate Frequency (1st / 2nd) ............................................ 49.95MHz / 450kHzSensitivity (12dB SINAD) ............................................................ Wide : 0.18µV or less Narrow : 0.22µV or lessSelectivity
–6dB ........................................................................................ Wide : 12kHz or more Narrow : 10kHz or more–60dB ...................................................................................... Wide : 30kHz or less Narrow : 24kHz or less
Squelch Sensitivity ..................................................................... 0.1µV or lessAudio Output (8Ω, 5% distortion) .............................................. 2W or higher (5% distortion)Audio Output Impedance ........................................................... 8Ω
TRANSMITTERPower Output
High ......................................................................................... K,E,M2,M3 : 60W M4 : 25WLow ......................................................................................... K,E,M2,M3 : Approx. 25W
Modulation .................................................................................. Reactance modulationSpurious Emissions .................................................................... –60dB or lessMaximum Frequency Deviation ................................................. Wide : ±5kHz Narrow : ±2.5kHzAudio Distortion (at 60% modulation) ........................................ 3% or lessMicrophone Impedance ............................................................. 600Ω
Note : All specifications (General,
Transmitter and Receiver) are guaran-
teed within the amateur radio band.
Guarantee K,M2,M3,M4 E
frequency range 144~148MHz 144~146MHz
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