2. SYSTEM CIRCUIT
6
TROUBLESHOOTING
No LED display.
Is 5V obtained at IC751
pin #9, 25?
Oscillation at IC751 pin #1?
Specific GRID/SEG doesnÕt function.
Check R830, D831, L751, L824.
Exchange IC751.
Check IC 751 pin #22~24, 27,
28, 30, 31.
Check IC 751 pin #10~12, 14~21.
NO
YES
YES
NO
NO
GRID output at PORT of IC751?
YES
SEG output at PORT of IC751?
Exchange IC751.
YES
A. LED DISPLAY
NO
Содержание DV6T834
Страница 31: ...30 CIRCUIT DIAGRAM 1 POWER SUPPLY SCHEMATIC DIAGRAM VE 1 5 COMBO ...
Страница 32: ...31 CIRCUIT DIAGRAM 2 SERVO SYSCON SCHEMATIC DIAGRAM VE 1 5 COMBO ...
Страница 33: ...32 CIRCUIT DIAGRAM IC301 3 VIDEO AUDIO SCHEMATIC DIAGRAM Hi Fi VE 1 5 COMBO ...
Страница 34: ...33 4 DVD AUDIO VIDEO SCHEMATIC DIAGRAM VE 1 5 COMBO CIRCUIT DIAGRAM ...
Страница 35: ...34 CIRCUIT DIAGRAM 5 Hi Fi IN OUT SCHEMATIC DIAGRAM VE 1 5 COMBO ...
Страница 36: ...35 CIRCUIT DIAGRAM 6 DQL 1003 1103 1203 ALI M3351 MPEG IC ...
Страница 37: ...36 CIRCUIT DIAGRAM 7 DQL 1003 1103 1203 RF MOTOR_DIRIVERS ...
Страница 38: ...37 CIRCUIT DIAGRAM 8 DQL 1003 1103 1203 FLASH SDRAM ...
Страница 39: ...38 CIRCUIT DIAGRAM 9 DQL 1003 1103 1203 AUDIO_DAC VIDEO_CHANNEL ...
Страница 41: ...40 PCB CIRCUIT BOARD 1 1 VCR MAIN ...
Страница 42: ...41 PCB CIRCUIT BOARD 1 2 POWER ...
Страница 43: ...42 PCB CIRCUIT BOARD 1 3 DVD MAIN ...
Страница 47: ...46 INSTRUMENT DISASSEMBLY FIG 5 E MAIN PCB DISASSEMBLY Remove 2 screws then remove MAIN PCB Remove 2 screws ...
Страница 48: ...47 INSTRUMENT DISASSEMBLY F MAIN CHASSIS DISASSEMBLY FIG 6 Remove 4 screws then remove MAIN CHASSIS ...
Страница 49: ...48 INSTRUMENT DISASSEMBLY G Explode view ...
Страница 50: ...49 INSTRUMENT DISASSEMBLY 2 DVD Module DAEWOO DQL 10XX DISASSEMBLY A DECK TOTAL DVD AS ...
Страница 51: ...50 INSTRUMENT DISASSEMBLY B DRIVE UNIT AS ...
Страница 52: ...51 INSTRUMENT DISASSEMBLY C DRIVE UNIT HOLDER AS ...
Страница 53: ...52 INSTRUMENT DISASSEMBLY D PICK UP TENSION AS ...