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S/M No. : VT7C1PSEF0
Service Manual
Video Cassette Recorder
ALL T-MECHA (Hi-Fi/MONO)
Model: (PAL/SECAM MODELS)
DV-T7C1/4C1/2C1 Series
DV-T7E1/4E1/2E1 Series
DV-T7M1/4M1/2M1 Series
DV-T7J1/4J1/2J1 Series
DV-T7D1/4D1/2D1 Series
DV-T7T1/4T1/2T1 Series
DV-T7W1/4W1/2W1 Series
DV-T7L1/4L1/2L1 Series
DV-T7L1
DV-T7E1
DV-T7C1
DV-T7B1
DAEWOO ELECTRONICS CO., LTD.
http : //svc.dwe.co.kr Feb. 2001
TABLE OF CONTENTS
SAFETY&PRECAUTIONS ................................................................................................ 2
EXTERNAL VIEWS ......................................................................................................... 4
FRONT VIEWS FUNCTION .................................................................................................................... 4
REAR VIEWS FUNCTION ...................................................................................................................... 6
ELECTRICAL ADJUSTMENT............................................................................................ 7
SPECIFICATIONS ......................................................................................................... 8
VOLTAGE CHART ........................................................................................................ 9
CIRCUIT DIAGRAM ...................................................................................................... 13
POWER CIRCUIT DIAGRAM................................................................................................................. 13
SYSCON CIRCUIT DIAGRAM ............................................................................................................... 14
A/V CIRCUIT DIAGRAM (PAL)............................................................................................................... 15
A/V CIRCUIT DIAGRAM (SECAM) ......................................................................................................... 16
PIF CIRCUIT DIAGRAM........................................................................................................................ 17
HI-FI & SW CIRCUIT DIAGRAM............................................................................................................. 18
SW CIRCUIT DIAGRAM ....................................................................................................................... 19
SHUTTLE / PATH JIG DIAGRAM ............................................................................................................. 20
WAVEFORMS ON VIDEO CIRCUIT ................................................................................ 21
COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW ............................................ 24
PCB MAIN.......................................................................................................................................... 24
DISASSEMBLY ............................................................................................................. 25
PACKING ASS' ................................................................................................................................. 25
Y
FRONT PANEL ASSEMBLY ................................................................................................................... 26
INSTRUMENT DISASSEMBLY ................................................................................................................. 30
ELECTRICAL PARTS LIST ............................................................................................... 31
PCB MAIN AS .................................................................................................................................... 31
TABLE OF DIFFERENT PART LIST FOR PCB MAIN AS .............................................................................. 43
APPENDIX (Appendix is provided only by internet http://svc.dwe.co.kr)
TROUBLE SHOOTING FLOW CHART .............................................................................. 1
POWER CIRCUIT ................................................................................................................................. 1
PIF CIRCUIT........................................................................................................................................ 3
SERVO-SYSCON CIRCUIT .................................................................................................................... 4
AUDIO CIRCUIT (NORMAL) ................................................................................................................. 12
VIDEO CIRCUIT .................................................................................................................................. 15