Daewoo DVST8S4 Series Service Manual Download Page 1

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Service Manual

S/M No. : VTG8S4DET1

Oct. 2002

DAEWOO ELECTRONICS CO., LTD.

http : //svc.dwe.co.kr

Video Cassette Recorder

Model: (PAL/SECAM MODELS)

DVST8S4 Series

DVST9S4 Series

ALL T-MECHA (STEP-UP)

DVST9S4

DVST8S4

✔

Caution

: In this Manual, some parts can be changed for improving, their

performance without notice in the parts list. So, if you need the

latest parts information,please refer to PPL(Parts Price List) in

Service Information Center (http://svc.dwe.co.kr).

Summary of Contents for DVST8S4 Series

Page 1: ... SECAM MODELS DVST8S4 Series DVST9S4 Series ALLT MECHA STEP UP DVST9S4 DVST8S4 Caution In this Manual some parts can be changed for improving their performance without notice in the parts list So if you need the latest parts information please refer to PPL Parts Price List in Service Information Center http svc dwe co kr ...

Page 2: ... CIRCUIT DIAGRAM 8 POWER BLOCK DIAGRAM 10 SYSCON CIRCUIT DIAGRAM 11 SERVO SYSCON BLOCK DIAGRAM 13 A V SECAM COLOR CIRCUIT DIAGRAM 14 VIDEO PLAYBACK RECORD PATH FOR PAL 16 HIFI SW CIRCUIT DIAGRAM 18 PIF CIRCUIT DIAGRAM 20 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 22 PCB MAIN 22 DISASSEMBLY 23 PACKING ASS Y 23 FRONT PANEL ASSEMBLY 24 INSTRUMENT DISASSEMBLY 25 ELECTRICAL PARTS LIST 26 PCB MAIN AS ...

Page 3: ...ielectric strengthen between power cord plug prongs and exposed accessible parts of the set RF terminals antenna terminals video and audio input output terminals microphone jack ear phone jacks etc is greater than values given table 1 3 Clearance distance When replacing primary circuit component confirm specified clearance distance d d between soldered terminals and between terminals and surroundi...

Page 4: ...s Use on AC voltmeter to measure across both terminals of load Z See figure2 and following table Leakage current ratings for selected are as AC Line Voltage Region Load Z Leakage Cur rent i Clearance Distance d d 100V Japan 1kΩ i 1 mArms Exposed accessible parts 110 to 130V USA Canada 15kmF 1kΩ i 0 5mArms Exposed accessible parts 110 to 130V 200 to 240V Europe Australia 2kΩ i 0 7mA peak i 2mAdc An...

Page 5: ...4 1 FRONT VIEWS FUNCTION DVST8S4D P S FRONT VIEW DVST9S4D P S FRONT VIEW 2 REAR VIEWS FUNCTION HI FI 2 SCART TYPE REAR VIEW HI FI RCA TYPE REAR VIEW EXTERNAL VIEWS ...

Page 6: ...4 Insert PATH JIG and press REC button on the remote control 5 Check the position of the V sync from the rising edge of the SW pulse Standard 6 5H 0 5H ITEM MODE ADJUSTMENT POINT CHECK POINT TEST EQUIPMENT TEST TAPE INPUT SIGNAL 6 5H ADJUSTMENT PLAY REC BUTTON PIN 4 PIN 5 OF P502 OSCILLOSCOPE DP 2 NO SIGNAL ADJUSTMENT PARTS MEASURING POINT PCB MAIN TOP VIEW TMI BLOC PRE AMP P502 TO PATH JIG OSCILL...

Page 7: ...er with NETTETE IMAGE control at cen ter position 240 lines with NETTETE IMAGE control at center position AUDIO Recording system Input Output Frequency Range Signal to Noise Ratio Audio Distortion Longitudinal track 8dBm CENELEC standard more than 47 k ohms unbalanced 6dBm CENELEC standard less than 1k ohms unbalanced 100k ohms load 100Hz to 8 000Hz More than 38dB Less than 3 SP TUNER Tuning syste...

Page 8: ...7 CIRCUIT INFORMATION 1 INTERCONNECT WIRING DIAGRAM ...

Page 9: ...8 CIRCUIT INFORMATION 2 POWER CIRCUIT DIAGRAM ...

Page 10: ...3 323 323 Q802 E 0 0 0 B 0 25 0 26 0 17 C 0 12 0 11 0 17 Q821 E 12 58 12 6 12 6 B 13 2 13 2 13 2 C 15 6 15 36 15 4 Q822 E 5 2 5 19 5 2 B 5 89 5 89 5 89 C 5 97 5 97 5 96 Q825 E 0 0 0 B 0 0 0 C 5 89 5 89 5 89 Q826 E 0 0 0 B 0 73 0 73 0 73 C 0 0 0 3 T801 PIN4 X 5V DIV Y 5uS DIV 2 T801 PIN 3 X 2V DIV Y 2mS DIV 1 T801 PIN 1 X 0 1KV DIV Y 5uS DIV 4 IC801 PIN3 X 0 5V DIV Y 5uS DIV 5 IC801 PIN 4 X 2V DIV ...

Page 11: ...10 CIRCUIT INFORMATION 3 POWER BLOCK DIAGRAM ...

Page 12: ...11 CIRCUIT INFORMATION 4 SYSCON CIRCUIT DIAGRAM ...

Page 13: ...68 0 01 0 01 0 01 69 0 01 5 18 0 01 70 0 01 0 02 0 08 71 5 04 0 5 01 72 5 01 0 0 07 73 0 0 0 74 0 3 2 58 0 09 75 0 03 0 0 09 76 0 0 0 09 77 0 0 2 72 78 1 33 0 0 09 79 0 0 Í 5 0 Í 5 80 5 02 0 Í 5 0 Í 5 81 0 74 0 01 1 58 82 5 21 0 0 83 4 55 0 01 0 1 84 0 01 0 05 5 19 85 0 01 0 01 0 86 5 21 0 01 0 SYSCON MODE LOC PIN EE PLAY REC 87 4 23 2 49 2 48 88 0 0 01 0 89 0 0 01 1 51 90 0 01 0 01 1 28 91 0 0 01...

Page 14: ...13 CIRCUIT INFORMATION 5 SERVO SYSCON BLOCK DIAGRAM ...

Page 15: ...14 CIRCUIT INFORMATION 6 AV SECAM COLOR CIRCUIT DIAGRAM ...

Page 16: ... 2 02 1 96 2 52 80 0 95 0 96 4 53 81 1 15 1 14 1 15 82 0 02 0 02 0 02 83 0 45 1 35 1 28 84 1 39 2 26 1 13 85 0 39 0 02 0 66 86 0 2 0 27 1 63 87 1 93 1 96 4 35 88 1 93 1 95 4 33 89 1 93 1 95 4 33 90 1 93 1 96 4 35 91 5 14 5 12 5 12 92 0 02 0 02 0 02 93 1 94 0 74 0 73 94 1 94 0 74 0 73 95 1 94 0 74 0 73 96 1 95 0 74 0 73 97 0 0 02 0 02 98 2 29 2 29 2 43 99 2 29 2 29 2 43 100 2 29 2 29 2 56 A V MODE ...

Page 17: ...IV PB COLOR SCM Y 20uS DIV 6 IC301 PIN3 X 1V DIV C SYNC Y 20uS DIV 7 IC301 PIN58 X 0 2V DIV REC SECAM Y 20uS DIV 8 IC301 PIN50 X 0 2V DIV VIDEO INPUT REC Y 20uS DIV 9 IC301 PIN79 X 0 1V DIV PB ENVE Y 2mS DIV 10 IC301 PIN43 X 0 1V DIV Y DLY OUT PB Y 20uS DIV 11 IC301 PIN43 X 0 1V DIV Y DLY OUT REC Y 20us DIV 12 IC301 PIN74 X 0 1V DIV DEEMPHA OUT PB Y 20uS DIV 13 IC301 PIN65 X 0 5V DIV VIDEO OUT REC...

Page 18: ...17 CIRCUIT INFORMATION 8 1 SECAM PLAYBACK PATH BLOCK DIAGRAM 8 2 SECAM RECORED PATH BLOCK DIAGRAM ...

Page 19: ...18 CIRCUIT INFORMATION 9 HIFI SW CIRCUIT DIAGRAM ...

Page 20: ...4 62 4 62 4 64 20 4 62 4 62 4 64 21 4 62 4 61 4 64 22 3 90 3 90 3 90 23 3 91 3 92 3 92 24 3 92 3 92 3 92 25 3 92 3 94 3 92 26 0 82 0 84 0 84 27 0 00 0 00 0 00 28 3 88 3 88 3 90 29 3 92 3 91 3 92 30 0 82 0 00 0 82 31 3 92 0 82 3 92 32 3 92 3 94 3 92 33 3 92 3 92 3 92 34 2 58 3 92 3 92 35 0 06 12 58 4 34 36 0 64 0 64 4 32 37 0 64 0 64 4 34 38 0 00 0 64 4 28 39 0 00 0 00 0 00 40 5 18 0 00 5 10 41 0 9...

Page 21: ...20 CIRCUIT INFORMATION 11 PIF CIRCUIT DIAGRAM ...

Page 22: ...0 0 02 30 2 56 0 04 2 58 31 0 00 0 04 2 56 32 5 08 0 00 0 00 33 2 53 0 00 5 08 34 0 00 0 00 2 53 35 2 56 0 00 0 00 36 0 00 0 00 2 56 37 0 00 0 00 0 00 38 0 00 0 00 0 00 39 0 00 0 00 0 00 40 0 00 0 00 0 00 41 0 00 0 00 0 00 42 2 60 0 00 2 26 43 2 56 0 04 2 56 44 0 00 0 00 0 00 IC151 1 0 02 0 01 0 02 2 2 66 2 68 2 64 3 2 66 2 70 2 66 4 0 02 0 00 0 02 5 0 00 0 00 0 00 6 4 83 4 75 4 71 7 4 87 4 83 4 7...

Page 23: ...22 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW 1 PCB MAIN ...

Page 24: ...23 DISASSEMBLY 1 PACKING ASS Y ...

Page 25: ...24 DISASSEMBLY 2 FRONT PANEL ASSEMBLY DVST8S4D P S SERIES DVST9S4D P S SERIES ...

Page 26: ...25 DISASSEMBLY 3 INSTRUMENT DISASSEMBLY 3 1 SET TOTAL ...

Page 27: ...CREW TAPPTITE TT3 RND 3X5 MFZN A1700 97S5500400 BELT REEL CR68 A1800 97S2623200 LEVER RELAY SECC T1 2 A1900 97S2709600 RACK FL PBT DY4410GF NATURAL A2000 97S2708200 GEAR CAM DERLIN 100 A2100 97SA317150 PINCH LEVER TOT AS T MECHA A2200 97SA318050 LC BRKT AS T5 MECHA B2040 97P885X146 CONN AS A C HEAD 6P SHIELD A2201 7274300611 SCREW TAPPTITE TT3 RND 3X6 MFZN A2400 97SA317310 IDLER PLATE TOT AS T2 ME...

Page 28: ... 01MF K 1608 C212 HCBK103KBA C CHIP CERA 50V X7R 0 01MF K 1608 C239 HCQK331JBA C CHIP CERA 50V CH 330PF J 1608 C251 HCFH474ZCA C CHIP CERA 25V Y5V 0 47MF Z 2012 C252 HCFH474ZCA C CHIP CERA 25V Y5V 0 47MF Z 2012 C253 HCFH474ZCA C CHIP CERA 25V Y5V 0 47MF Z 2012 C254 HCFH474ZCA C CHIP CERA 25V Y5V 0 47MF Z 2012 C255 HCFH474ZCA C CHIP CERA 25V Y5V 0 47MF Z 2012 C256 HCFH474ZCA C CHIP CERA 25V Y5V 0 4...

Page 29: ...CAM MSP3417D QG3 IC151 1LC74793 IC VPS LC74793JM R IC251 1TDA9605H IC HI FI TDA9605H R IC301 1LA71750M IC A V 1 CHIP LA71750M IC502 14ATM24S32 IC CHIP EEPROM AT24C32N 10SI 2 7 SOIC LOC PART CODE PART NAME PART DESC REMARK IC503 1PT6355 IC DRIVER PT6355 44LQFP VFD DR L607 HLX1210001 BEAD CHIP TB201209Z121 L608 HLX1210001 BEAD CHIP TB201209Z121 L611 HLX1210001 BEAD CHIP TB201209Z121 Q302 T2SC2412KB ...

Page 30: ... PART DESC REMARK RJ644 HRFS000 BA R CHIP 1 16 0 OHM 1608 RJ646 HRFS000 BA R CHIP 1 16 0 OHM 1608 RJ648 HRFS000 BA R CHIP 1 16 0 OHM 1608 RJ899 HRFS000 BA R CHIP 1 16 0 OHM 1608 Z0012 PVMPJRE210 MAIN RADIAL AUTO AS DVST9S4D AS C001 CEXF1C100A C ELECTRO 16V RSM 10MF 5X7 C004 CEXF1A101A C ELECTRO 10V RSM 100MF 6 3X7 C013 CEXF1C470A C ELECTRO 16V RSM 47MF 5X7 TP C015 CEXF1C470A C ELECTRO 16V RSM 47MF...

Page 31: ... SR 5 IC504 1KA7533Z IC SWITCH RESET KA7533Z IC505 1KA7542Z IC SWITCH RESET KA7542Z IC802 1KA431AZ IC REGULATOR KA431AZ L001 5CPX100J2T COIL PEAKING 10UH BRN BLK LOC PART CODE PART NAME PART DESC REMARK L002 5CPX100J2T COIL PEAKING 10UH BRN BLK L051 5CPX101J2T COIL PEAKING 100UH BRN BRN L052 5CPX101J2T COIL PEAKING 100UH BRN BRN L053 5CPX100J2T COIL PEAKING 10UH BRN BLK L201 5CPX101J2T COIL PEAKIN...

Page 32: ...148 AUTO 52MM D631 DZN4148 DIODE 1N4148 AUTO 52MM D805 DZEG01C DIODE EG01C LOC PART CODE PART NAME PART DESC REMARK D806 DZN4003 DIODE IN4003 D807 DZUZ3R0BSB DIODE ZENER UZ 3 0BSB 3 01 3 22V D808 DZN4148 DIODE 1N4148 AUTO 52MM D823 DZGDZP16B DIODE ZENER GDZP16B1 D824 D1SS244 DIODE 1SS244 D825 DZUZ33BSB DIODE ZENER UZ 33BSB 30 32 31 38V D826 DZUZ5R6BSB DIODE ZENER UZ 5 6BSB 5 46 5 70V D827 DZUZ13BS...

Page 33: ...6 4 3K OHM J R509 RD AZ331J R CARBON FILM 1 6 330 OHM J LOC PART CODE PART NAME PART DESC REMARK R512 RD AZ472J R CARBON FILM 1 6 4 7K OHM J R513 RD AZ331J R CARBON FILM 1 6 330 OHM J R514 RD AZ331J R CARBON FILM 1 6 330 OHM J R516 RD AZ221J R CARBON FILM 1 6 220 OHM J R519 RD AZ101J R CARBON FILM 1 6 100 OHM J R522 RD AZ472J R CARBON FILM 1 6 4 7K OHM J R523 RD AZ472J R CARBON FILM 1 6 4 7K OHM J...

Page 34: ... COPPER AWG22 1 0 65 TIN COATING JP028 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP029 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP030 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP031 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP032 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP035 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP038 85801065GY WIRE COPPER AWG22 1 0 65 T...

Page 35: ...40 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING LOC PART CODE PART NAME PART DESC REMARK JP141 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP142 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP144 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP145 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP147 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP148 85801065GY WIRE COPPER AWG22 1 0...

Page 36: ... 0 65 TIN COATING JP266 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP267 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP268 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING LOC PART CODE PART NAME PART DESC REMARK JP269 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP271 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP272 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING JP273 85801065GY ...

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