yamaha rxv795a
TRANSCRIPT
ARX-V795a/RDS/HTR-5170/DSP-R795a
B
C
D
E
F
G
H
I
J
K
L
s SCHEMATIC DIAGRAM (DSP)1P-E69/J59 F-2
IC1 : NJM2904M IC8~11, 13 : PC4570G2 Dual OP Amp
IC2 : HD74HC02FPEL Quad 2 Input NOR
2IC5 : M5M51288BKJ-20L RAMADDRESS INPUT0 1
4.7 0 4.9 0 4.9 0
LINE ADDRESS DECODER
DIGITAL IN
03 8 0 2
4 0
8 0 0 0 9
4.9
4.9 11 14 0 13 12 7 0 10
05 6 2.2
7 0.1 3.1 2.4 2.4 2.6 0 2.4 0.9 4.7 0.1 0 3.1 0 0 0 0 0 0 0 0 0 4.9
A0 A1 A2 A3 A4 A5 A6 A7 A8
LINE INPUT BUFFER
4.9
Vcc(5V) 512 MEMORY ARRAY 131072X8bit 512X2048 GND(0V)
18
0 0.9 0.9 0 0 0.1 0.1 0.1 0.1 4.8 2.4 4.9 0
4.9 2.4 0 2.4 2.4
0
0 3.1
4.9 4.9 2.4
2048I/O DATA CONTROL CIRCUIT0 2.4 2.4 0 0 0 0 2.4 2.4 0 4.80 4.9 4.9 0 2.3 0 4.8 4.8 2.4 0
4.8 11.5
COLUMN I/O CIRCUIT2.4 6 2.4 5 2.4 7 2.4 6 4 2.4 5 -11.5
2.4 2.4IC4
DAC
2.2 4.9 4.9
3.1 0
0 0 0 4.9 4.9 4.9 0 4.9
DIRIC3
5
0
4.7 4.8
4.7
4.7 0
11.5 0 0
P-E66/J56 D-1
0 0
4.8 0 4.9 0 0 0 0 0
0 0 0 0 0
DSP + DIGITAL PRO-LOGIC DTS DECODER4.8 0 0 0 2.4 0 3.1 1.5 0 3.1 0
2.5 0 0
0 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4
2.4
2.4
2.4 8 7
2.4 0
2.4 0 2.4 0 2.4 0 2.4 1 -11.5 3 2.4 2.4 4 2
16 COLUMN INPUT BUFFER11.5 3 2.4 8 2.4 2 1 2.4
0
0
0
0
2.2
A9 A11 A13 A15 A10 A12 A14 A16 S1 S2 W OE CHIP SELECT CIRCUIT WRITE ENABLE CONTROL INPUT OUTPUT ENABLE CONTROL INPUT
MAIN L
4
2.4 2.3
0 0 0 0 0 4.9 0 0 -10.9
-10.9
0 0 0
0.6
0 0 0
2.5
2.6
2.4 2.4 2.4
2.3 4.9
-10.9 0 4.9 0 4.9 2.4 2.4 2.4 0 4.9 0 0 0 0
0.6
0 0 0 -11.5 0
54
62.4
DIGITAL IN
2.4 2 3
4.8 2.4 4.8 4.7 2.4 0.9
0.1
0 0.9 0.9 0 0 0.1
2.4 1
2.3 4.9 2.4 2.4 0 0 4.9
IC6 : AK4526 A/D
0 0 -10.9 0 0
11.5 0
0 4.9
2.4 2.4 2.4 2.4 2.4 2.4
0.1 0.1 0.1 0
FRONT L0 0 0 -11.5
50 4.9 0 0 4.9
4.9
RAM0 0.2 4.9 4.9
0.5
0 0.2 0.2 -10.9
-10.9 0
0
0.5
0IC14
0 4.9 0 4.9 4.9 4.9 4.9 4.9 0 0.5 0 0 -10.9 0 0
4.9 0 0 4.9 0
-10.9
CENTER
6
4.9 4.9 0 4.9 4.9 0 0 4.9 4.9
0 2.3 2.6 4.9
6
4.9 0
3.3 0 0 -10.9 0 0 -10.9 0 0
11.5 0
IC7 : AK4320 1 bit D/A Converter
REAR L0 0 0 -11.5
7
P-E66/J56 G-8
Point t (Pin13 of IC3)V : 2V/div DC range H : 50 nsec/div 1 : 1 probe
Point y (Pin13 of IC14)V : 2V/div DC range H : 50 nsec/div 1 : 1 probe
Other ICs q IC3 : YM3436DK q IC4 : YSS918-F q IC14 : LC87F5164
See page E-27/J-23 See page E-28/J-24 See page E-31/J-27
8* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
DSPE-65/J-55
DATA I/O
3
0
2.4 2.4 4.8 4.8
MAIN L
256 COLUMN ADDRESS DECODER
DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8
A
B
CP-E65/J55 J-4
D
EP-E69/J59 I-3
F
GP-E69/J59 A-5
HP-E71/J61 A-5
I
J
KRX-V795a/RDS/HTR-5170/DSP-R795a
s SCHEMATIC DIAGRAM (INPUT)1
Point r Point e (Pin3 of IC21)V : 2V/div DC range H : 50 nsec/div 1 : 1 probe CH1 : Pin1 of IC21 CH2 : Pin29 of IC21 H : 0.5 sec/div : 1 probe V : 2V/div (CH1) V : 2V/div (CH2) DC range 1
(This waveform is not available by pushing the power switch ON and OFF.)
0V
0 38 0 2
21.8 0 1 0 0 0With the POWER ON, disconnect the A/C power cord. Reconnect the A/C power cord and the above waveforms will start. Disconnect the power cord from the AC outlet.
0
0.3
0.3
0
2
PHONO MM EQ AMP0.1 6 8 0 0 3 2 11.2 0 1 0.1 5 4
CENTER MAIN LCIRCUIT CHANGES BY MARKET. 0 0 0
0.1 7 -22.2
0
0 0 2 8 21.8 10 0 03 0 0 0
0 0
3
0 6 0 5 4
-11.1
0 7
FRONT L0 0 0 5 0 0 6 4 -22.2 0 7 0 0 0 : NOT USED : USED
-11.4 0
4.9 0 4.9 0
0 0 0 0
0
0
40 0 0 05 6 0
11.6 0 8 0 7 0 0 0 0 05 8 0 0
REAR R0.7
4.9 4.9
INPUT SELECTOR
MAIN L0 0 0
0 7
0
0 0 0
0
0
0
0
0 0 0 0 0 4.9
4.9
4.9 0 0 4.9 4.9 4.54.5 4.9
6
0.3 0.3 0 1.4 0.3 1.2 0.2 0 0 1.2 0 4.9
0
0
0
4.9 0 4.8 0 0 2 4.9 4.9 0 1 4 -22.2 4.9 0 0 0 4.9 4.9 0 0 4.9 0 0 0 0IC21
0 2
5
0 0
0 3 0 4
0 1 -11.5
0 0 0
03 0
4
0 4.9 4.9 4.9 0.1 0
0
0
0
0
0 0 0
0
TAPE MONITOR4.9 1 8 3 2
4
3
4.8 2.0 2.2 4.7 4.9 4.9 4.7 4.9 4.9 0 0 0 0 4.9 4.94.7 4.7 4.9
7 4
6 5
6
11.6 11.6 0 0
11.6 11.6 0 0
7
11.3
0
0
4.9
P-E69/J59 C-2
0
0
-11.5 0 0 0
-11.5 0 0 0
-11.5 0 0 0
11.6 11.6 0 0
4.9
P-E68/J58 H-2 TO VIDEO(1) P-E67/J67 D-8 P-E72/J62 (J,U,C,A,L,R,T models) P-E73 (B,G models) H-5
8
P-E65/J55 B-8
* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
INPUTE-66/J-56
0 4.9 4.9 0
ARX-V795a/RDS/HTR-5170/DSP-R795a
B
C
D
E
FCIRCUIT CHANGES BY MARKET.
G
H
I
J
K
L
s SCHEMATIC DIAGRAM (INPUT & VIDEO)1IC401 : TC4053BP Triple 2-Channel Analog Multiplexers/ DemultiplexersVDD16
IC402~404, 407, 408 : LA7956 Video Switch
14
X-COMMON OX IX OY IY OZ IZ Z-COMMON Y-COMMON
LOGIC LEVEL CONVERTER
A
11
OUT C IN OUT C IN OUT C IN OUT C IN OUT C IN OUT C IN
12 13 2 1 5 3 4 15
B
10
2
IC11 : NJM2068MD IC12, 20 : PC4570G2 IC13, 15, 16 : M5220FP Dual OP Amp
C
9
INH
6
8
7
VSS
VEE
IC405 : PD4066BC Quad Analog Switch/Multiplexer
IC17 : LC78211 Analog Function Switch
3
: NOT USED : USED
S-VIDEO AMP & SELECTOR11.1 2.1 2.5 1.5 0.1 0.3 0.7 0 0 1.3 0.7 2.5 2.5 0.7 0.7 23.8
REAR L
40 3.8 11.1 11.5 11.3 5.3 11.1 0 3.8 11.5 11.3 5.3
SPEAKER RELAY DRIVE0.7
23.8
CENTER
3.8
3.8
IC18 : LC78213 Analog Function Switch11.5 11.3 3.8
0.5
0
TO MAIN (2) P-E71/J61 G-2
TO MAIN (1) P-E70/J60 I-5
0.5 5.0
11.1
SUPERIMPOSE0 0 0 TO MAIN (5)
3.8
3.8
5.7
0
5
0
11.5
3.8 11.1
3.8
3.8
11.3
SYNC SIGNAL DETECTOR5.75.0 1.1 4.3 2.2 1.1
0
1.1
1.8 1.1 0
4.4 4.9 1.9
IC406
2.4
2.5
4.9
4.9
0.1
1.0
11.1
11.5
3.8
3.8
3.8
3.8
11.3
6IC19 : LC78212 Analog Function Switch
0.5
5.6
0
0
0.1
2.4
2.4
5.0
0
0
1.1
1.5
0
TO MAIN (1)
4.3
5.0
5.0
2.0
5.0
5.0
5.0 1.1 0
0
0
P-E68/J58 A-1
3.4 0 11.3 0
2.7
2.7
2.7 1.1
0.5
0.5
11.1
0
SUB POWER SUPPLY8.8 9.8 AC12.6 9.8 8.8 9.3 0
11.1
11.1
11.1
0.5
5.0
11.1
7P-E70/J60 I-65.6 0.7 0
5.0
5.0
0
0
0
0
9.3 0 0
0 0
0
11.1
5.6
11.1 5.0 5.7 5.7 0
5.6
5.6
11.5
REGULATOR
8
Other ICs q IC21 : HD6433397A97F See page E-36/J-30 q IC406 : LC74781-9626 See page E-35/J-29
0
5.0
5.6
* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.P-E66/J56 D-8 P-E69/J59 I-2
INPUT & VIDEO
E-67/J-57
A
B
C
D
E
F
G
H
I
J
KRX-V795a/RDS/HTR-5170/DSP-R795a
s SCHEMATIC DIAGRAM (OPERATION)1
P-E67/J57 I-6
P-E70/J60 I-4
P-E66/J56 H-8
2
-13.3
-13.3
-22.3
-22.3
-28.9
-23.6
-28.8
-28.1
-28.0
-28.0
-27.9
-27.9
-27.9
-27.9
-27.9
-27.9
-27.9
-27.9
-27.9
-27.9
-27.9
-27.9
3
4.7 -22.5
-28.1
4.7
-28.1
-27.9
4.7
4.7
-27.8 -29.6
-27.8
0
0
4.9
4.9
4
CIRCUIT CHANGES BY MARKET. 8.8 0.6 4.9 5.6 -28.9 4.9 -28.8 0 -27.8 -27.8 4.9 -28.0 -27.9 4.9 -27.9 -27.9 -27.9 -27.9 -27.9 : NOT USED 0 0.6 -23.6 4.9 5.6 5.6 4.9
5
4.4
FULL MUTE DRIVE8.8 8.1 8.8
-11.4
DISPLAY DRIVE-27.9 -27.9 -27.9 -27.9 -27.9 -27.9 -29.6
RESET4.8 0
-27.9
IC102 : LC75710NE FL Display Driver
0
0
2.3
2.4
4.7
4.9
0
4.9
5.7
6.3
0 0
0
0
0
SYSTEM CONTROL
6
7
Other IC q IC102 : LC75712E See page E-35
8* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
OPERATION
E-68/J-58
ARX-V795a/RDS/HTR-5170/DSP-R795a
B
C
D
E
F
G
H
I
J
K
L
s SCHEMATIC DIAGRAM (OPERATION)1
IC351 : TC74HCU04AP Hex Inverters
4.8 2.5 3.1 0.3 0
DIGITAL SELECTOR4.8 4.8 0 0 0 0 0 to VIDEO (1) P-E67/J57 G-8
0
0
0 4.8
0
2
P-E66/J56 C-8
4.8 0 4.3 4.8 0 4.3 4.8 0 4.3 4.8 4.3 0 4.8 4.8 0 4.8 0 0 0 4.8 0 0.3 0 0
0 4.9 4.3 4.3 4.8 0 4.8 0
DIGITAL IN3
4.8
P-E65/J55 B-1
IC352 : HD74HC00P Quadruple 2-input Positive NAND Gates
11.3 0 3 8 0 1
SPEAKER SETTING CONTROL
P-E66/J56 E-1
4
MAIN
0 2
IC353 : HD74HC153P Dual 4 to 1 Data Selectors
0 6 0 5
7 0 4 -11.3
CENTERP-E70/J60 A-5
0 3 8 0 2
11.3 0 1 0 2 0 3 11.3 8
11.5 0 0 0
P-E66/J56 G-1
0 0 0 0 0 0 0 -11.3
0 1
5
0 5
0 0 0 0 0 0 0 11.3
0 6 0 5 0 7 4 -11.3
0 6
4 -11.3
0 7
03 02
11.3 8 0 1
REAR L11.3
P-E71/J61 A-4
CIRCUIT CHANGES BY MARKET. 0 0 -11.4 0
11.3
0 2 03
8
0 1
60 5 0 6 4 -11.3 0 7 0 11.5 0 0 : NOT USED
0 6 0 5
VOLUME AMP0.1 0.1 4.8 2.0
4 -11.3
7 0
0 0.5 0.7 1.2 4.5 4.5 10.4
0.7 0.5
0 0 11.3 0 0 0 0 11.3
0 0 0 0 0 0 0
SPEAKER LEVEL CONTROL0 0 -11.4 0
0
7
MOTOR DRIVEIC202 : PC4570HA Dual OP-Amp IC251~253, 257, 258 : PC4570G2 Dual OP-Amp IC254 : LB1641 Motor Driver
IC201 : NJM2068LD Dual OP Amp+ +
0
10.4
IC255, 256 : TC9299P Electric Controlled Volume
81 OUT1 2 IN1 3 +IN 1 4 VCC 5 +IN 2 6 IN2 7 OUT2 8
1 1 VCC+VCC
2 +4 5 VEE
+6
7 8 VO2 9 VCC
2
3
V O1 Vm1 +Vm 1
+Vm2 Vm2
* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
E-69/J-59
OPERATION
A
B
C
D
E
F
G
H
I
J
KRX-V795a/RDS/HTR-5170/DSP-R795a
s SCHEMATIC DIAGRAM (MAIN)1
Each voltage given here represents that in the top side of IMPEDANCE SELECTOR, but the one in the parentheses ( ) is that in the bottom side.
2
13.6 48.8 (40.5)
3
0
0 -11.4 0
MAIN L POWER AMP0.9 -0.4 0.6 0 -48.1 -48.8 0 -1.0
48.8 (40.5) 0 0.9 0.4 0.4 0 48.8 (40.5)
48.6
48.6 0 0
0 0
-11.4
0 -1.0 -0.4 -1.0 -48.9 (-40.5) -48.6 -48.9 (-40.5) -0.4 -48.1
4
MUTINGMAIN L
0.4 0.4 1.0 -0.4
0 -11.4 0
48.4 0 0 0 -42.2 -29.6
0.6 P-E69/J59 E-5 0 -48.0 0
-1.0
-30.2
0 0 -11.4 -1.0 0 24.1 -48.9 (-40.5)
MUTING6
-0.5 -1.0 -0.5 -48.9 (-40.5)
-48.0 -48.5
0.7 0.7 1.2 0.6
SPEAKER RELAY DRIVE0
P-E67/J57 H-7
0
-48.8
TO VIDEO (2) P-E67/J57 I-5
5
MAIN R POWER AMP
48.8 (40.5) 1.0 48.8 (40.5)
P-E71/J61 G-5
P-E68/J58 B-1
CIRCUIT CHANGES BY MARKET.
CENTER POWER AMP1.0
48.8 (40.5) 1.0 0.4 0.4 0 0 0 48.8 (40.5) 48.5
0 : NOT USED
-0.4
0.6
-1.0 0
70 0 -11.4
0 -48.1
-48.8 -0.5 -1.0 -1.0 -0.5 -48.9 (-40.5) 0
48.8 (40.5)
-48.9 (-40.5)
MUTING
-48.1 -48.6
-48.9 (-40.5)
8* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
P-E71/J61 G-5
P-E71/J61 G-5
CENTER
B POWER SUPPLY
MAIN
E-70/J-60
ARX-V795a/RDS/HTR-5170/DSP-R795a
B
C
D
E
F
G
H
I
J
K
L
1
s SCHEMATIC DIAGRAM (MAIN)
Each voltage given here represents that in the top side of IMPEDANCE SELECTOR, but the one in the parentheses ( ) is that in the bottom side.
2
REAR L POWER AMP0.9 0.4
48.8 (40.5) 0.9 0.4 48.8 (40.5) 0.4 0 48.4 0 0 P-E67/J57 H-5
REAR L0.6 0 -11.4 0 -48.4 0 0 -49.1 0 0 -0.5 -1.0 -48.9 (-40.5) -48.9 -0.5 -48.9 (-40.5) 0 -1.0
3
MUTING-48.4
-1.0
MUTING-11.4 0 0
CENTERP-E69/J59 E-6
4-48.8 -48.9 (-40.5)
REAR L-48.9 (-40.5) -0.4 0 0 0
MUTING0 -11.4 -49.1 0 0 0.6 -48.4 0
-48.4 -1.0 -1.0 -0.4
MAIN
-1.0 -0.4 0 0.9 0 0 48.4 AC75.8 P-E70/J60 I-4
5P-E66/J56 H-1
0.4
P-E70/J60 I-4
P-E70/J60 I-7
REAR R POWER AMP
0.4 0.9 48.8 (40.5) 48.8 (40.5) AC62.6
31.8
AC51.6 AC31.6
612.1 0 19.0
P-E71/J61 G-7
CIRCUIT CHANGES BY MARKET. -32.6
12.0 0
19.0
-11.7 0
-19.9
24.0 0 24.0 19.0 AC9.7
REGULATOR5.0 0 0.5
-24.9
24.6
24.0
31.9 24.0 -19.9 0 0 AC6.5 P-E71/J61 G-6
-16.5
16.4 8.2 0 24.4 0
24.4
-8.2 0
10.5
0
: NOT USED
7
8* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
E-71/J-61
MAIN
A
B
C
D
E
F
G
H
I
J
KRX-V795a/HTR-5170/DSP-R795a
s SCHEMATIC DIAGRAM (TUNER)1
Each voltage given here represents that in the FM (98. 1MHz, STEREO) reception mode but the one in the parentheses ( ) is that in the AM (1080kHz, MANL) reception mode.CIRCUIT CHANGES BY MARKET.
IC1 : LA1266 AM/FM IF
2DISCRIMINATOR BALANCE ADJ.
IC2 : LC72131 PLL Controller
MONAURAL DISTORTION ADJ.10.4 (0) 10.5 (11.5)
AM/FM IF
MPX
0.1 (10.6)
FM
FM
0 (0)
3
VT(EX only)2.4 (1.1)FM 87.5MHz 98.0MHz 108.0MHz 531KHz AM 1080KHz 1611KHz 1.9V 4.5V 7.8V 1.3V 5.0V 7.3V 11.0 (11.1) 9.3 (9.4) 5.1 (5.2) 4.4 (4.4)
0 (0)
2.8 (9.1)
(9.1) 2.8
7.7 (7.6)
: NOT USED : USED(3.6)
(1.1)
0 (0)
(5.2) 5.1
3.0 (2.8)
2.4 (2.1)
(3.7)
FM
76.0MHz 83.0MHz 90.0MHz 531KHz AM 1080KHz 1611KHz
1.6V 4.1V 8.1V 1.3V 5.0V 7.3V
0 (2.1) (2.2)
11.1 (11.2)
11.0 (11.1)
11.0 (11.1)
11.0 (11.1)
(5.2)
(J only)
2.8 (9.1)
2.4 (1.1)
2.8 (2.8)
2.8 (7.0) 2.8 (5.2)
(0) (0)
(5.0) 4.9 4.9 0 (0)
3.0 (2.8)
0 (0)
2.4
3.9
2.3
AM
3.4
2.8
0
(3.1) 3.1
(3.1) 3.1
(3.1) 3.1
(3.1) 3.1
(3.1) 3.1
(3.0) 3.0
(3.1) 3.1
(3.0) 3.0
(3.1) 3.1
(2.1) 3.4
(3.5) 3.9 (3.5) 3.9
(2.2) 2.6
(3.5) 3.9
(1.1) 2.4
(1.9) 1.5
(2.0) 1.5
1.5
(10.5) 0
(0) 0
0
0
IC3 : LA3401 MPX(6.9)(0) 0
AM SENSITIVITY
(2.8)
AM
4
bottom view
(1.5)
SIGNAL METER ADJ.(11.5) 0
4.9 (4.9) 0 (0)
11.4 (0.2)
11.4 (11.5)
SEPARATION ADJ.
52.4 (0) (5.0) 4.9 0 0 (2.5) 0 (0) 2.4 (5.0) 4.9 (1.0) 1.0 (1.0) 1.0 (5.0) 4.5 (0) 0 (2.5) 2.5 2.4 (2.5) 5.7 (5.7) 0 0 0 0 0 (0) (0) (0) (0) 5.7 (5.7) (0) (0) (0)
0.1 10.6
11.4 (0.2)
REGULATOR5.0 (5.0) 11.4 (11.5)
TO INPUT (1) P-E66/J56 E-8
PointV : 2V/div
1
(Pin22 of IC2)H : 0.1sec/div DC range 1 : 1 probe
6
10 (0)
PLL
0V
2V
SAMPLE 0.1us
q
PK1 : ENV-172C8G1R (V2909100) U, C, R, T models
q
PK1 : ENV-172A4G1 (V2716700) A, L models
q
PK1 : ENV-142C2G1R (V2909000) J model
7
8* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
TUNERE-72/J-62
ARX-V795aRDS
B
C
D
E
F
G
H
I
J
K
L
1
s SCHEMATIC DIAGRAM (TUNER)
Each voltage given here represents that in the FM (98. 1MHz, STEREO) reception mode but the one in the parentheses ( ) is that in the AM (1080kHz, MANL) reception mode.IC1 : LA1266 AM/FM IF
2
IC2 : LC72131 PLL ControllerDISCRIMINATOR BALANCE ADJ.
MONAURAL DISTORTION ADJ.10.3 (0) 10.4 (11.6)
AM/FM IF
MPX
0.1 (10.6)
FM FM0 (0) 0 (0) 2.8 (9.2) 2.8 (9.2)
30 (0)
5.0 (5.1) 4.3 (4.3)
5.1 (5.1)
2.4 (1.1)
FM
11.1 (11.2)
11.1 (11.2)
11.0 (11.2)
11.2 (11.3)
2.6 (2.2)
3.1 (2.8)
(5.5)
2.8 (9.2)
2.8 (2.8)
2.8 (5.5)
2.8 (7.3)
2.4 (1.1)
0 (0)
3.4
2.8
0 (0)
4.9
0.5
AM
0
(0)
87.5MHz 98.1MHz 108.0MHz 531KHz AM 1080KHz 1611KHz
1.7V 4.1V 8.3V 1.4V 5.1V 7.4V
3.8 (3.7)
7.6 (7.5)
2.3 (2.3)
VT
9.4 (9.4)
2.4 (1.1)
11.0 (11.2) 3.1 (2.8) 2.5 (2.1)
(2.0)
(0)
(4.5)
IC3 : LA3401 MPX(3.1) 3.1 (3.1) 3.1 (5.1) 5.1 (3.1) 3.1 (3.1) 3.1 (5.1) 5.1 (3.1) 3.1 (3.2) 3.2 0 (6.9)
(2.3) 2.7
(3.5) 3.9
(2.0) 1.5
(2.2) 3.1
(1.1) 2.4
(3.5) 3.9
(1.9) 1.5
(10.6) 0
bottom view0 (0) 4.9 (4.9) 0 (9.4)
(1.5)
4
(2.9)
AM
AM SENSITIVITY ADJ.
(0) 0
SIGNAL METER ADJ.
11.5 (0.2)
(3.1) 3.1
1.5
0
0 (0)
SEPARATION ADJ.
TO INPUT (1) P-E66/J56 E-8
11.5 (11.6)
50 (2.4) (4.5) 0.5
IC4 : LC72720N RDS Decoder & Controller
0 (0) 0.1 (10.6) 0 (0)
RDS DECODER4.9(4.9) 4.9(4.9) 4.9(4.9)
0 (0)
0 (0)
0 (0)
0 (0)
(2.4) 0 (0) 2.4 (4.9) 4.9 (1.0)1.1 (1.0)1.1 (5.1) 4.1 (0) 0 (2.5) 2.5 2.4 (2.4)
11.5 (0.2) 0 (0) 0 (0) 0 (0) 0 (0) 4.9 (4.9) 11.5 (11.6)
0 (0)
0 (0)
(2.1) 2.1
(4.2) 4.2
(2.1) 2.1
(0)
(0)
(2.1)
61
5.6 (5.6)
(2.1)
(0)
5.6 (5.6)
(2.5) 2.5
2.1
2.1
0
0
0
2.4(2.4)
REGULATOR
2
0 (0)
PLL
q
PK1 : ENV-172A4G1 (V2716700)
7
PointV : 2V/div
1
(Pin22 of IC2)H : 50nsec/div DC range 1 : 1 probe
PointV : 2V/div
2
(Pin12 of IC4)H : 0.1sec/div DC range 1 : 1 probe
8
0V
0V
2V
SAMPLE 50us
2V
SAMPLE 0.1us
* All voltage are measured with a 10M/DC electric volt meter. * Components having special characteristics are marked Z and must be replaced with parts having specifications equal to those originally installed. * Schematic diagram is subject to change without notice.
E-73
TUNER