R

TV-970C (PAL B/G,H)

TV-970D (PAL I)

TV-970N (PAL B/G,H) Conrad B/N 350329

(KX-528)

(without price)

TV-970

JUN. 2001

CONTENTS

SPECIFICATIONS ......................................................................................... 1

BLOCK DIAGRAM ....................................................................................... 2

ADJUSTMENTS ............................................................................................ 3TV-970C/N ................................................................................................. 4TV-970D ..................................................................................................... 7

PRINTED CIRCUIT BOARDS ..................................................................... 10

EXPLODED VIEW ....................................................................................... 12

PARTS LIST ................................................................................................ 13

SCHEMATIC DIAGRAMS ........................................................................... 16

— 1 —

Item Specification

1. Type: LCD Color Television

2. Display Element: High resolution color liquid crystal display(TI-STN Type)

3. Drive System: Passive matrix system

4. Screen Size: 2.3 inches

5. Backlight: High luminance fluorescent material

6. Antenna: Rod antenna (VHF, UHF)

7. Speaker: 11/8ø inches (28 mm) × 1

8. Connection Terminals: Earphone jack (3.5ø mini)External power source jack (DC IN 6V)Audio/Video input jack (3.5ø mini)

9. Power Supply: 3-way power supply systemBatteries: 4 AA-size dry batteriesAC: AC adapter AD-K64/AD-K65 (option)Car battery: Car adapter CA-K65 (option)

10. Power Consumption: Approx. 3.1 WApprox. 3.3 W (Model B only)

11. Ambient Temperature Range: 32°F (0°C) ~ 104°F (40°C)

12. Dimensions: 3 3/16 (W) × 1 7/16 (D) × 5 1/16 (H) inches8.1 (W) × 3.7 (D) × 12.9 (H) cm

13. Weight (excluding batteries): Approx. 6.7 oz 190 g

SPECIFICATIONS

Specifications and design are subject to change without notice.

Model Color System TV System Channel

TV-970C/N PAL B/G, H CCIR VHF: 2 ~ 12 ch UHF: 21 ~ 69 ch

TV-970D PAL –/I UK — UHF: 21 ~ 68 ch

— 2 —

BLOCK DIAGRAM

TUNER(TEAA1)

PREAMP

ANT

SAWFILTER

VIF/SIF(M51348FP)

POWER SWBAND SW

DC DCCONVERTER

TRANS

BATTERY 1.5 V × 4

AC ADAPTOR 6V

EXTERNAL VIDEO

EXTERNAL AUDIO

EAR PHONE

SP

AUDIO2VCC1-1

VCC2

VCC2 (4.0 V)

VCC7 (40 V)

VEE1 (—5 V)

AVJACK

AUDIO AMPNJM2070M

VCC2

TUVCC2-8

AFI

UV

HL

A MUTF

MODULE

VIDEO2

AVB

VCC7 BT

VCC2 (4.7 V)

VCC1-1

VEE1VCC7

CHROMAM52042FP

TUNINGBT GEN

BA 10358 VOLTAGESUPLLY

FOR LCDDRIVER

A D CONVERTERCONTROLLER

OM6006

INVERTERIRANS

BL-PCB

LAMP

VCC1-1 GND

CN

710

CN

950

LCD

DR

IVE

R 5

151

BT

BV

BS

U. V

AU

DIO

1

VID

EO

1

A-M

UT

E

AF

T

AU

DIO

1

VID

EO

1

RG

B

HD

C-S

YN

C

CN

700

LCD

LCM

L-PCB

LCD DRIVER051

LCD DRIVER051

VCC2-0 GNDV1. V3. V0. V4. VOCK1. CK2D1~ 6SNB STRCNB2. CDB2. CFB2EN1. EN2

MODULE POWER SUPPLY

— 3 —

VR301 : Tint adjustment

VR300 : Contrast adjustment

VR700 : VCO free run frequency adjustment

VR100 : VCC2 adjustment

T200 : LLD Coil adjustment

ADJUSTMENT

Top View Bottom View

1. VCC2 adjustment, VCC7, VEE1 voltage check2. LLD coil adjustment3. Free running frequency adjustment4. Contrast adjustment5. TINT pot adjustment

Preparations

1. Connect AVB (CP725) to GND.2. Set SW100 on UHF mode.

Adjustment And Test Point Locations

— 4 —

L-PCB

DC IN

Oscilloscope

VCC1-1

IF signal

Stabilizer

Detector OUT

Low-Pass Filter

Adjust to minimize the DC level.Signalgenerator

Adjustment procedures (TV-970C/N)

1. VCC2 adjustment, VCC7, VEE1 voltage check• Condition

Power supply: Vcc1-1 = 5.0 ± 0.05 [V]

• AdjustmentApply 5.0 ± 0.05 [V] on Vcc1-1 (CP101).Adjust VR100 so that Vcc2 (CP102) voltage becomes 4.00 ± 0.02 [V].

• CheckingVCC7 (CP103) = 36.0 ~ 44.0 [V]VEE1 (CP104) = –4.5 ~ –5.5 [V]

• Block diagram

2. LLD coil adjustment• Conditions

(1) SignalsBroadcasting system: B/G,HColor system: PAL color bar

(2) Signal levelInput electric field: 40 ± 3dBµ (IF AGC full gain), P/S = 10 dB

(3) Other conditionsCCIR IF (Input electric field: terminated with 75-ohm resistance)Power supply: Vcc1-1 = 5.0 ± 0.05 [V]

• AdjustmentMonitor video detection signal (CP238) via a low-pass filter of 100 kHz cutoff frequency and adjustLLD coil T200 so that its DC level is minimum (waveform’s amplitude is maximum).(Reference: C= 1500 pF, R = 1 Kohm)

• ConfirmationThere should be no waveform distortion (erroneous synchronization, etc.), under sensitivity (videodetector output level is abnormally small, etc.).

• Block diagram

V

VCC7

VCC2

VEE1L-PCBStabilizer

VCC1-1DigitalVoltmeter

— 5 —

3.Free running frequency adjustment• Conditions

(1) SignalNo signal (PAL standard signal should be applied only at synchronous check)

(2) Signal levelInput electric field only at synchronous check: 70 dBµ (terminated with 75-ohm resistance),P/S = 10 dB

(3) Other conditionsCCIR IF input only at synchronous check (input electric field with 75-ohm termination).Connect SYF terminal (CP729) and VCC2-7.Power supply: Vcc1-1 = 5.0 ± 0.05 [V]Room temperature: 20 ± 10 [°C]

• AdjustmentMonitoring HDB (CP305) with a frequency counter, adjust VR700 so that the frequency is 15.625 ±0.1 [kHz].

• Caution(1) Disconnect the wire between SYF terminal and VCC2-7.

Applying IF signal make sure that synchronization is normal on the display.

(2) Use input signal pattern conforming CCIR standard.

• Block diagram

4.Contrast adjustment• Conditions

(1) SignalBroadcasting system: B/G,HColor system: PAL color bar

(2) Signal levelInput electric field: 70 dBµ (terminated with 75-ohm resistance), P/S = 10 dB

(3) Other conditionsCCIR IF input (input electric field should be terminated with 75-ohm resistance).Apply voltage of Vcc1-1 = 5.0 ± 0.05 [V]

• AdjustmentConnect color terminal (CP320) to GND (CP300) so that screen becomes black and white. Adjustcontrast pot VR300 so that the voltage between pedestal level and white level of B signal (CP740) is0.80 ± 0.05 [Vp-p].

L-PCB

VCC1-1

VCC2-7SYF

HD

Stabilizer

Signalgenerator

FrequencyCounter

— 6 —

• Caution(1) Make sure that there is no distortion on the waveforms.

(2) Connect COLOR terminal of Chroma IC (M52045FP) to GND.

(3) Monitor the B output signal with an oscilloscope via a low-pass filter (C = 2700 pF, R = 100 ohm).

• Block diagram

5.TINT pot adjustment• Condition

(1) SignalBroadcasting system: B/G,HColor system: PAL color bar

(2) Signal levelInput electric field: 70 dBµ (75-ohm termination), P/S = 10 dB

(3) Other conditionsCCIR IF input (input electric field should be terminated with 75-ohm resistance).Apply voltage of Vcc1-1 = 5.0 ± 0.05 [V]

• AdjustmentObserving output signal B with an oscilloscope, adjust TINT pot VR301 so that the wave from H andH' will be same.

• CautionDo not connect COLOR terminal to GND.Monitor B output signal with an oscilloscope via a low-pass filter (C = 2700 pF, R = 100 ohm).

• Block diagram

L-PCB

VCC1-1Stabilizer

B output

Low-Pass Filter

Signalgenerator

Oscilloscope

White level

Pedestal level

L-PCB

VCC1-1Stabilizer

Low-Pass Filter

B output

Signalgenerator

Oscilloscope

H H’

— 7 —

L-PCB

DC IN

Oscilloscope

VCC1-1

IF signal

Stabilizer

Detector OUT

Low-Pass Filter

Adjust to minimize the DC level.Signalgenerator

Adjustment procedures (TV-970D)

1. VCC2 adjustment, VCC7, VEE1 voltage check• Condition

Power supply: Vcc1-1 = 5.0 ± 0.05 [V]

• AdjustmentApply 5.0 ± 0.05 [V] on Vcc1-1 (CP101).Adjust VR100 so that Vcc2 (CP102) voltage becomes 4.00 ± 0.02 [V].

• CheckingVCC7 (CP103) = 36.0 ~ 44.0 [V]VEE1 (CP104) = –4.5 ~ –5.5 [V]

• Block diagram

2. LLD coil adjustment• Conditions

(1) SignalsBroadcasting system: IColor system: PAL color bar

(2) Signal levelInput electric field: 40 ± 3dBµ (IF AGC full gain), P/S = 7 dB

(3) Other conditionsUK IF (Input electric field: terminated with 75-ohm resistance)Power supply: Vcc1-1 = 5.0 ± 0.05 [V]

• AdjustmentMonitor video detection signal (CP238) via a low-pass filter of 100 kHz cutoff frequency and adjustLLD coil T200 so that its DC level is minimum (waveform’s amplitude is maximum).(Reference: C= 1500 pF, R = 1 Kohm)

• ConfirmationThere should be no waveform distortion (erroneous synchronization, etc.), under sensitivity (videodetector output level is abnormally small, etc.).

• Block diagram

V

VCC7

VCC2

VEE1L-PCBStabilizer

VCC1-1DigitalVoltmeter

— 8 —

3.Free running frequency adjustment• Conditions

(1) SignalNo signal (PAL standard signal should be applied only at synchronous check)

(2) Signal levelInput electric field only at synchronous check: 70 dBµ (terminated with 75-ohm resistance),P/S = 7 dB

(3) Other conditionsUK IF input only at synchronous check (input electric field with 75-ohm termination).Connect SYF terminal (CP729) and VCC2-7.Power supply: Vcc1-1 = 5.0 ± 0.05 [V]Room temperature: 20 ± 10 [°C]

• AdjustmentMonitoring HDB (CP305) with a frequency counter, adjust VR700 so that the frequency is 15.625 ±0.1 [kHz].

• Caution(1) Disconnect the wire between SYF terminal and VCC2-7.

Applying IF signal make sure that synchronization is normal on the display.

(2) Use input signal pattern conforming UK standard.

• Block diagram

4.Contrast adjustment• Conditions

(1) SignalBroadcasting system: IColor system: PAL color bar

(2) Signal levelInput electric field: 70 dBµ (terminated with 75-ohm resistance), P/S = 7 dB

(3) Other conditionsUK IF input (input electric field should be terminated with 75-ohm resistance).Apply voltage of Vcc1-1 = 5.0 ± 0.05 [V]

• AdjustmentConnect color terminal (CP320) to GND (CP300) so that screen becomes black and white. Adjustcontrast pot VR300 so that the voltage between pedestal level and white level of B signal (CP740) is0.80 ± 0.05 [Vp-p].

L-PCB

VCC1-1

VCC2-7SYF

HD

Stabilizer

Signalgenerator

FrequencyCounter

— 9 —

• Caution(1) Make sure that there is no distortion on the waveforms.

(2) Connect COLOR terminal of Chroma IC (M52045FP) to GND.

(3) Monitor the B output signal with an oscilloscope via a low-pass filter (C = 2700 pF, R = 100 ohm).

• Block diagram

5.TINT pot adjustment• Condition

(1) SignalBroadcasting system: IColor system: PAL color bar

(2) Signal levelInput electric field: 70 dBµ (75-ohm termination), P/S = 7 dB

(3) Other conditionsUK IF input (input electric field should be terminated with 75-ohm resistance).Apply voltage of Vcc1-1 = 5.0 ± 0.05 [V]

• AdjustmentObserving output signal B with an oscilloscope, adjust TINT pot VR301 so that the wave from H andH' will be same.

• CautionDo not connect COLOR terminal to GND.Monitor B output signal with an oscilloscope via a low-pass filter (C = 2700 pF, R = 100 ohm).

• Block diagram

L-PCB

VCC1-1Stabilizer

B output

Low-Pass Filter

Signalgenerator

Oscilloscope

White level

Pedestal level

L-PCB

VCC1-1Stabilizer

Low-Pass Filter

B output

Signalgenerator

Oscilloscope

H H’

— 10 —

PRINTED CIRCUIT BOARDS

TOP VIEWSLinear

Back Light

— 11 —

BOTTOM VIEWSLinear

Back Light

— 12 —

EXPLODED VIEW

7

11

10

12

8

14

4

21

22

5

24

1

6

16

15

17

18

25

19

20

3

9

13

223

13

LINEAR PCB

Item Code No. Parts Name Specification Applicable Q Price Code R

ConnectorCN700 35021718 Connector 52559-2290 Common 1 AE XCN710 35022586 Connector 9210B-1-04Z604-T Common 1 AC X

DiodesD100 71011194 Chip diode MA111-(TX) Common 1 AA CD110 23603092 Chip zener diode MA8047-L(TX) Common 1 AA CD150 71011194 Chip diode MA111-(TX) Common 1 AA CD152 23901379 Schottky diode MA729-(TX) Common 1 AB CD155 23901470 Chip diode MA143A-(TX) Common 1 AA CD180 23901190 Diode ERA15-01Y Common 1 AA CD280 71011194 Chip diode MA111-(TX) TV-970C/N 1 AA CD500 23603079 Chip zener diode MA8300-M(TX) Common 1 AA CD701 71011194 Chip diode MA111-(TX) Common 1 AA CD801 23901477 Chip diode MA142WA-(TX) Common 1 AA CD802 23901470 Chip diode MA143A-(TX) Common 1 AA CD803 23901470 Chip diode MA143A-(TX) Common 1 AA C

FilterF200 30251834 SAW filter SAF38.9MZ210Z TV-970C/N 1 AJ CF200 30251855 SAW filter SAF39.5MZ210Z TV-970D 1 AJ CF210 30251952 SIF filter SFSH5.5MCB TV-970C/N 1 AB CF210 30251955 SIF filter SFSH6.0MCB TV-970D 1 AB CF220 38512108 Ceramic discriminator CDSH5.5MC30K TV-970C/N 1 AB CF220 38512111 Ceramic discriminator CDSH6.0MC30K TV-970D 1 AB CF230 38501372 SIF trap TPS5.5MB TV-970C/N 1 AC CF230 38510553 SIF trap TPS6.0MB TV-970D 1 AC C

FuseFU100 27975509 Chip fuse PI-R429001 Common 1 AD A

OscillatorH300 25902717 Crystal oscillator HD-49-4.43M Common 1 AE C

IcsIC200 21141827 Linear IC M51348FP-T1 Common 1 AR BIC300 21143311 Linear IC M52045FP-T1 Common 1 AW BIC500 21160119 OP amplifier BA10358F-T1 Common 1 AC BIC600 21142464 Linear IC NJM2070M-T1 Common 1 AF BIC700 20126038 LSI ML9661GA-6006 Common 1 BB BIC710 21145866 IC S-81230SGUP-DQB-T1 Common 1 AC B

JacksJK100 35018281 Power jack HEC0811-010010 Common 1 AD CJK250 35013773 Headphone jack HSJ6063-01-410 Common 1 AH CJK600 35015439 Jack HSJ1456-01-210 Common 1 AC C

InductorsL101 30132583 Chip inductor NLCD322522-470K-TP Common 1 AA XL200 30132585 Chip inductor NLCD322522-101K-TP Common 1 AA XL201 30132585 Chip inductor NLCD322522-101K-TP Common 1 AA XL210 30132650 Chip inductor LK1608-2R7K-TP Common 1 AA XL220 30132268 Chip inductor LK1608-150K-TP Common 1 AA XL300 30132585 Chip inductor NLCD322522-101K-TP Common 1 AA XL700 30450028 Chip inductor BK1608HS601-T Common 1 AA XL800 30450028 Chip inductor BK1608HS601-T Common 1 AA X

TransistorsQ101 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA CQ110 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA CQ111 22530308 Chip transistor 2SD1119-R(TX) Common 1 AC CQ200 22501617 Chip transistor 2SC4417-(TX) Common 1 AB CQ280 22591491 Digital transistor UN5213-(TX) TV-970C/N 1 AA C

Note : Q - Quantity per unitR - Rank

- 13 -

Item Code No. Parts Name Specification Applicable Q Price Code R

Q300 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA CQ800 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA CQ801 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA CQ803 22510189 Chip transistor 2SB1218A-R(TX) Common 1 AA CQ804 22510189 Chip transistor 2SB1218A-R(TX) Common 1 AA CQ810 22530716 Chip transistor 2SD1824-S(TX) Common 1 AA CQ811 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA CQ813 22510189 Chip transistor 2SB1218A-R(TX) Common 1 AA CQ820 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA CQ821 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA CQ822 22530133 Chip transistor 2SD1819A-R(TX) Common 1 AA C

SwitchSW100 34120938 Slide switch ESD-11V231 TV-970C/N 1 AD CSW100 34121134 Slide switch ESD-11V221 TV-970D 1 AD C

ConverterT100 30650730 DC/DC converter LC12U-45 Common 1 AE B

CoilsT200 38410700 Coil 5KAC-03A Common 1 AE XT201 38410700 Coil 5KAC-03A Common 1 AE X

ThermistorTM100 27753448 Chip thermistor NTH5G1M31B102K04TH Common 1 AB C

TunersTU200 10135315 Tuner TEPE5-01 TV-970C/N 1 BT BTU200 10148570 Tuner TEPB5-05 TV-970D 1 BR B

Variable resistorsVR100 27752800 Chip semi-fixed resistor EVN5ESX50B24 Common 1 AA CVR200 27752765 Chip semi-fixed resistor EVN5ESX50B54 Common 1 AA CVR300 27752758 Chip semi-fixed resistor EVN5ESX50B14 Common 1 AA CVR301 27752765 Chip semi-fixed resistor EVN5ESX50B54 Common 1 AA CVR600 27650616 Volume RK09H11T-10KB Common 1 AD CVR700 27752786 Chip semi-fixed resistor EVN5ESX50B53 Common 1 AA CVR800 27650623 Volume RK09H11T-20KB Common 1 AD C

BL PCB

Item Code No. Parts Name Specification Applicable Q Price Code R

ConnectorCN950 35021550 Connector 9110S-04 Common 1 AA X

CoilL900 30130756 Choke coil RCH-875-101K Common 1 AD X

TransistorsQ900 22530308 Chip transistor 2SD1119-R(TX) Common 1 AC CQ901 22530308 Chip transistor 2SD1119-R(TX) Common 1 AC C

SwitchsSW700 34121029 Switch SKHHAL Common 1 AA CSW701 34121029 Switch SKHHAL Common 1 AA C

TransformerT900 30121588 Inverter trans C-8123 Common 1 AL B

Note : Q - Quantity per unitR - Rank

- 14 -

MAIN COMPONENT

Item Code No. Part Name Specification Applicable Q Price Code R

1 6930 8594 CASE/LOWER RJK501875-1 Common 1 AD X2 6930 8600 STAND RJK501878-1 Common 1 AA C3 6930 8597 COVER/BATTERY RJK501877-1 Common 1 AJ C4 6930 8627 PLATE/JACK RJK501920-1 Common 1 AA X5 3851 1267 ANTENNA/ROD YH810721 Common 1 AQ B6 6930 8653 PLATE/RATING RJK502115-4 TV-970C 1 AA X6 6930 8652 PLATE/RATING RJK502115-3 TV-970D 1 AA X6 6930 8654 PLATE/RATING RJK502115-5 TV-970N 1 AA X7 6930 8601 BUTTON/TUNING RJK501879-1 Common 1 AA X8 6930 8602 KNOB/SWITCH RJK501881-1 Common 1 AA X9 1005 7172 SPEAKER U2808S23 Common 1 AG C

10 6930 8592 CASE/UPPER RJK501874-5 TV-970C 1 AK X10 6930 8590 CASE/UPPER RJK501874-3 TV-970D 1 AK X10 6930 8593 CASE/UPPER RJK501874-6 TV-970N 1 AK X11 6930 8596 PANEL/DISPLAY RJK501876-3 Common 1 AJ C12 6020 7658 SPRING/BATTERY/A P-408A-1 Common 1 AB X13 6020 7666 SPRING/BATTERY/B P-409A-1 Common 2 AA X14 6613 8320 PCB ASSY/LINEAR K241113*1 TV-970C/N 1 CN B14 6613 8915 PCB ASSY/LINEAR K241129*1 TV-970D 1 CL B15 6613 7290 CASE/REFLECTOR K140528-1 Common 1 AJ X16 1005 9656 BL UNIT K341437*2 Common 1 BW B17 1005 5997 LAMP/FLUORESCENT CBAG3DNJC-64KB2 Common 1 AT A18 6612 9730 SHEET/LIGHT DIFFUSER K340975-1 Common 1 AE X19 2725 1363 LCD CMG23C1-TO Common 1 CX C20 6613 7300 CASE/SHIELD K241038-1 Common 1 AB X21 6613 7210 SPRING/BATTERY K441546-1 Common 1 AA X22 6613 7220 SPRING/BATTERY K441547-1 Common 1 AA X23 6609 9630 SCREW K410188-6 Common 1 AA X24 6609 1290 SCREW K412031-1 Common 1 AA X25 1005 7171 SCREW RJK501919-1 Common 1 AA X

Notes: Q - Quantity per unitR - Rank

- 15 -

— 16 —

SCHEMATIC DIAGRAMSLINEAR (TV-970C/N)

40 V

Tuning Voltage Generator Circuit

Power Switch

Tunner Tunner

AntennaJack

Antenna

External

Power Supply Circuit

4.0 V

–5 V

Audio Amplifier CircuitIF Detection Circuit

EarphoneJack

Speaker

Display Controller Circuit

Chroma Circuit

Display Generator Voltage Circuit

— 17 —

LINEAR (TV-970D)

40 V

Tuning Voltage Generator Circuit

Power Switch

Tunner Tunner

AntennaJack

Antenna

External

Power Supply Circuit

4.0 V

–5 V

Audio Amplifier CircuitIF Detection Circuit

EarphoneJack

Speaker

Display Controller Circuit

Chroma Circuit

Display Generator Voltage Circuit

— 18 —

Notes:1. All resistance values are indicated in "ohms" (k=103 ohms, M=106 ohms).2. All capacitance values are indicated in "µF" (p=10-6 µF).3. All inductance values are indicated in "µH."

BACK LIGHT

CASIO TECHNO CO.,LTD.Overseas Service Division

Nishi-Shinjuku Kimuraya Bldg. 1F5-25, Nishi-Shinjuku 7-ChomeShinjuku-ku, Tokyo 160-0023, Japan