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
Summary of Contents for DV6T834
Page 31: ...30 CIRCUIT DIAGRAM 1 POWER SUPPLY SCHEMATIC DIAGRAM VE 1 5 COMBO ...
Page 32: ...31 CIRCUIT DIAGRAM 2 SERVO SYSCON SCHEMATIC DIAGRAM VE 1 5 COMBO ...
Page 33: ...32 CIRCUIT DIAGRAM IC301 3 VIDEO AUDIO SCHEMATIC DIAGRAM Hi Fi VE 1 5 COMBO ...
Page 34: ...33 4 DVD AUDIO VIDEO SCHEMATIC DIAGRAM VE 1 5 COMBO CIRCUIT DIAGRAM ...
Page 35: ...34 CIRCUIT DIAGRAM 5 Hi Fi IN OUT SCHEMATIC DIAGRAM VE 1 5 COMBO ...
Page 36: ...35 CIRCUIT DIAGRAM 6 DQL 1003 1103 1203 ALI M3351 MPEG IC ...
Page 37: ...36 CIRCUIT DIAGRAM 7 DQL 1003 1103 1203 RF MOTOR_DIRIVERS ...
Page 38: ...37 CIRCUIT DIAGRAM 8 DQL 1003 1103 1203 FLASH SDRAM ...
Page 39: ...38 CIRCUIT DIAGRAM 9 DQL 1003 1103 1203 AUDIO_DAC VIDEO_CHANNEL ...
Page 41: ...40 PCB CIRCUIT BOARD 1 1 VCR MAIN ...
Page 42: ...41 PCB CIRCUIT BOARD 1 2 POWER ...
Page 43: ...42 PCB CIRCUIT BOARD 1 3 DVD MAIN ...
Page 49: ...48 INSTRUMENT DISASSEMBLY G Explode view ...
Page 50: ...49 INSTRUMENT DISASSEMBLY 2 DVD Module DAEWOO DQL 10XX DISASSEMBLY A DECK TOTAL DVD AS ...
Page 51: ...50 INSTRUMENT DISASSEMBLY B DRIVE UNIT AS ...
Page 52: ...51 INSTRUMENT DISASSEMBLY C DRIVE UNIT HOLDER AS ...
Page 53: ...52 INSTRUMENT DISASSEMBLY D PICK UP TENSION AS ...