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Television Video Cassette Recorder
Chassis : Model: SCV11F TB531VCT1X/XSA TB331VDZ1S/XSA

Television Video Cassette Recorder

CONTENTS
1. Precautions 2. Specifications 3. Disassembly and Reassembly 4. Alignment and Adjustment (Mechanical) 5. Alignment and Adjustment (Electrical) 6. Troubleshooting 7. Exploded View and Parts List 8. Electric Parts List 9. Block Diagram 10. PCB Layout 11. Wiring Diagram 12. Schematic Diagrams

ELECTRONICS

© Samsung Electronics Co., Ltd. NOV.1998
Printed in Korea 3SCV11F-3115

Schematic Diagrams

12. Schematic Diagrams
12-1 VCR (SECAM-BLOCK)

RED

PB Y PROCESS

BLUE

REC Y PROCESS

Samsung Electronics

12-1

Schematic Diagrams

12-2 VCR (SYSTEM BLOCK)

4

3

1

5

2

6

12-2

Samsung Electronics

Schematic Diagrams

12-3 VCR (A/V BLOCK)

5,6

3 2

1

4

RED

REC Y PROCESS REC C PROCESS

BLUE

PB Y PROCESS PB C PROCESS

BLUE

REC AUDIO PB AUDIO 12-3

Samsung Electronics

Schematic Diagrams

12-4 VCR (POWER BLOCK)

12-4

Samsung Electronics

Schematic Diagrams

12-5 TV (1/4)

RED BLUE

POWER LINE SIGNAL LINE

Samsung Electronics

12-5

Schematic Diagrams

12-6 TV (2/4)

15

16 14 13 11 12 9 10 7

4

1

3

6

5

8

2

RED BLUE

POWER LINE SIGNAL LINE

12-6

Samsung Electronics

Schematic Diagrams

12-7 TV (3/4)

RED BLUE

POWER LINE SIGNAL LINE

Samsung Electronics

12-7

Schematic Diagrams

12-8 TV (4/4)

7

1

6

2 8

9 3 4 5

10

RED BLUE

POWER LINE SIGNAL LINE

12-8

Samsung Electronics

Schematic Diagrams

12-9 IF

12-10 CRT

12-11 2'nd IF PAL/SECAM-B/G, D/K, I OPTION

RED RED BLUE POWER LINE SIGNAL LINE RED BLUE

POWER LINE AUDIO LINE VIDEO LINE

Samsung Electronics

12-9

Schematic Diagrams

12-12 TTX

12-13 SECAM IF

12-14 PAL, SECAM

12-16 FRONT-A/V 12-15 MASTER

RED BLUE

POWER LINE SIGNAL LINE

12-10

Samsung Electronics

Schematic Diagrams

12-17 Voltages (VTR)
ICM601
MODE PIN NO 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 26 27 28 29 30 31 32 STOP 0 0 5 0 0 0 0 0 0.8 0 0 0 5 5 5 5 5 5 0 5 0 5 5 5 5 0 0 5 0 0 2.6 2.6 REC 0 0 5 0 0 0 0 0 0 0 0 1.5 5 5 5 5 5 5 0 5 0 5 5 5 5 5 0 5 0 0 3 3 PB 0 0 5 0 0 0 0 0 2.5 0 0 1.5 5 5 5 5 5 5 0 5 0 5 5 5 5 5 0 5 0 0 2.6 2.6 MODE PIN NO 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 STOP 0 2.5 2.6 2.6 2.6 0.6 2.6 5.0 0.2 0 0 0 0 0 0 0 0 0 0 5.2 0 0 5.2 5.2 0 2.6 2.6 0 5.2 0 5.2 0 REC 0 2.5 2.6 2.6 2.6 4.0 2.6 5.0 5.0 0 0 0 0 0 0 0 0 0 0 5.2 0 3.6 5.2 5.2 0 2.6 2.6 0 5.2 0 5.2 0 PB 0 65 2.5 66 2.6 67 2.6 68 2.6 69 4.0 70 2.6 71 5.0 72 5.0 73 0 74 0 75 0 76 0 77 0 78 0 79 0 80 0 81 0 82 0 83 5.2 84 0 85 3.6 86 5.2 87 5.2 88 0 89 2.6 90 2.6 91 0 92 5.2 93 0 94 5.2 95 0 96 5.0 5.0 5.0 5.0 0 5.0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5.0 0 5.0 4.5 0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 4.5 4.5 4.5 0 0 0 0 0 0 0 0 0 0 0 0 0 5.0 0 0 0 5.0 5.0 5.0 5.0 0 0 0 4.5 4.5 4.5 4.0 4.0 4.0 0 0 0 0 0.6 0 2.5 2.5 2.5 0 0 0 100 5.0 5.0 5.0 0 5.0 5.0 99 5.0 5.0 5.0 0 0 5.4 98 5.0 5.0 5.0 0 0 0 97 0 5.0 5.0 MODE STOP PIN NO REC PB PIN NO MODE STOP REC PB MODE STOP PIN NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 2.5 2.5 2.5 5.0 2.5 2.5 4.0 0.6 3.2 2.8 0 0 0 0 3.0 2.5 2.5 5.0 2.5 2.5 4.0 4.0 3.2 2.8 0 2.5 2.5 2.5 3.0 2.5 2.5 5.0 2.5 2.5 4.0 4.0 3.2 2.8 0 2.5 2.5 2.5 REC PB PIN NO 1 2 3 4 5 6 7 8 9 10 0 0.4 2.5 2.5 2.5 4 6.5 13.5 13.5 0 0 0.4 2.5 2.5 2.5 4 6.5 13.5 13.5 0 0 0.4 2.5 2.5 2.5 4 6.5 13.5 13.5 0

ICM201
MODE

ICM603
STOP REC PB

Samsung Electronics

12-11

Schematic Diagrams

12-18 Voltages (TV)
* Conditions of Measurement 1. Normal Condition 2. Receiving Color Bar Pattern 3. DC Voltage Q801 PIN NO. 1 2 3 4 5 6 7 8 9 STR6707
Units :Volts

IC301

TDA8356

IC902

24C08, 24C04

PIN NO.

PIN NAME VD-INPUT VD+ INPUT Vcc OUTPUT GND VFB OUT VO VI

VOLTAGES (V) 2.2 2.2 15.8 7.6 43.2 8.0 7.7

PIN NO. 1 2 3 4 5 6 7 8

PIN NAME GND GND GND GND SDA SCL GND VDD

VOLTAGE (V) 4.8 4.8 5.2

IC801 STAND-BY 298 0.8 6.3 POWER ON 291 0.5 0.7 1.3 1.3 7.7 IC501~IC503 PIN NO. 1 2 3 4

LTV817B STAND-BY 9.2 8.2 3.2 6.3

1
Units :Volts

2

PIN NAME C E B SINK DRIVE OCP F/B INH B+

POWER
3

14.3 13.3 1.2 7.7

4 5 6 7 8 9

TDA6101Q
Units :Volts

IC601

TDA7057AQ

PIN NO. 1 2 3 4 5 6 7 8 9

PIN NAME Vip Vcc Vin GND Iom Vdd Vcn Vcc Vof

VOLTAGES (V)
IC602 TDA7056

PIN NO. 1

PIN NAME VOL 1 SIG.GND IN 1 Vcc IN 2 SIG.GND VOL 2 OUT 2+ PWA GND OUT 2OUT 1PWA GND OUT 1+

VOLTAGES (V) 1.2 2.4 12.1 2.4 1.2 5.6 5.7 5.7 5.7

2.1 12.3 2.1 8.3 172.6 96~120 96~120 96~120
PIN NO. 1 2 3 4 5 6 7 8 9 PIN NAME NC Vcc IN GND NC A+ GND ANC VOLTAGES (V) 12.1 12.1 6.2 6.0 -

2 3 4 5 6 7 8 9 10 11 12 13

12-12

Samsung Electronics

Schematic Diagrams

12-18 Voltages (TV)
IC901 CXP853P40S-1 IC201 PIN NO. 1 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 ~ 59 60 61 ~ 62 63 ~ 64 Xtal EXtal RESET V.MUTE S.MUTE GND 2T AFT 1T AFT SCART ID BUS STOP P OFF DET XLC EXLC OSD R OSD G OSD B NC F/B NC S-L CTL GND VDD 2.5 2 2 3 4 5 6 7 8 9 10 11 12 ~ 22 23 24 25 26 27 28 29 30 31 32 33 V-sync TV POWER VPS POWER STBY-REC PB-H V/T/H AV/TUNER 2nd NT H 1st NT H D-coil Not used SCL SDA No used REMOCON VCR RESET TV CS TV SI TV SO TV CLK Vss DAVN 0.0 5.1 0.0 0.0 5.1 5.1 5.1 4.7 4.7 5.1 5.4 5.1 4.2 4.0 2.1 5.0 5.1 27 * Pin No 4, 5, 6, 7, 8, 11, 33, 38, 42 are High, Low output ports. 28 Y INPUT Y OUTPUT 1.9 2.5 55 56 AUDIO DEEMPHASSIS DECOUPLING SOUND DEMOD. 3.0 4.0 2.4 5.1 3.0 10 5.1 5.5 3.0 3.0 18 5.1 26 RGB SWITCH INPUT 0.2 54 TUNER AGC OUTPUT 5.8 19 20 21 22 23 24 25 BLACK CURRENT INPUT BLUE OUTPUT GREEN OUTPUT RED OUTPUT BEAM CUR LIMITER RED INPUT GREEN INPUT BLUE INPUT 6.8 2.6 2.5 2.7 2.9 3.4 3.4 3.4 46 47 48 49 50 51 52 53 VERT DRIVE POS VERT DRIVE NEG IF INPUT IF INPUT EHT/OVP INPUT VERT. SAWTOOTH CAPACITOR REF. CURR INPUT AGC DECOUPLING CAPACITOR 2.2 2.2 4.2 4.2 2.1 3.9 3.9 3.2 11 12 13 14 15 16 17 CHROMA INPUT Y/CVBS INPUT MAIN B+ INT CVBS INPUT GND AUDIO OUT DECOUPLING FILTER TUNING EXT CVBS INPUT 3.4 8.0 3.8 3.4 3.6 3.4 38 39 40 41 42 43 44 45 CVBS OUTPUT BLACK PEAK HOLD CAPACITOR HOR. OUTPUT SANDCASTLE OUTPUT PHI2 FILTER PHI 1 FILTER GND EAST-WEST DRIVE 3.3 4.0 0.4 0.5 4.1 3.9 3 4 5 6 7 8 9 EXT AUDIO INPUT VCO REF FILTER VCO REF FILTER PLL LOOP FILTER IF VIDEO OUTPUT SCL SDA BANDGAP DECOUPLING 3.9 3.6 3.6 2.7 3.4 4.7 4.7 6.7 30 31 32 33 34 35 36 37 R-Y OUTPUT B-Y OUTPUT R-Y INPUT SECAM REF OUTPUT X-TAL (3.58) X-TAL (4.43) LOOPFILTER BURST PHASE DET VCC 1.8 3.9 3.9 1.6 2.6 2.6 4.8 8.0 TDA8374 PIN NAME SOUND IF INPUT VOLTAGES (V) PIN NO. 29 PIN NAME B-Y OUTPUT VOLTAGES (V) 1.8

PIN NO. 1

PIN NAME H-sync

VOLTAGES (V) 1.2

PIN NO.

PIN NAME

VOLTAGES (V)

Samsung Electronics

12-13

Schematic Diagrams

12-18 Voltages (TV)

Terminal Voltages of ICs
IC PIN NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IC203* TDA8395P 4.5 1.1 8.1 3.3 4.2 2.9 2.9 0.5 2.8 IC202 TDA4665 5.0 0.5 5.0 3.0 3.1 1.6 1.4 IC701 TC4053BP 0.9 0.9 0.9 0.9 0.9 4.3 4.3 9.0 ICK01* TDA3845 1.8 2.0 4.4 1.7 1.7 5.1 5.1 12.0 1.8 6.1 0.6 1.8 ICL01* STV8225 4.2 3.2 0.6 4.3 3.5 4.3 6.3 4.3 3.5 4.3 9.0 4.3 4.3 IC702 KA8405 6.1 0.9 6.1 6.1 5.3 9.0 IC703 KA8405 6.1 0.9 6.1 6.1 5.3 9.0

Unit : Voltage (V)

IC704 KA8404 6.1 6.1 0.9 5.3 9.0

12-14

Samsung Electronics