5
TROUBLESHOOTING
1. POWER CIRCUIT
✓
CAUTION
You must use insulated trance during the first part test of POWER circuit.
Check IC601,IC701.
No power
POWER cord is ok?
Is 400~200V voltage
obtained at C805 +?
Output voltage of 2
nd
parts is normal?
Check
rectifier diode of 2
nd
parts ;
D821, D822, D823, D825,
D826, D827
Switching
pulse of IC801 pin#4 or
pin#5 is normal?
OK
Exchange POWER CORD
Check
F801,L801,L802,D801.
Exchange rectifier diode of
2
nd
parts ; D821, D822, D823,
D825, D826, D827.
Check IC801.
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
Summary of Contents for DV6T712D
Page 27: ...26 WAVEFORMS 15 9 P201 2 2 AUDIO 2 1 AUDIO Mono...
Page 29: ...28 CIRCUIT DIAGRAM 1 POWER SUPPLY SCHEMATIC DIAGRAM PAL COMBO...
Page 30: ...29 CIRCUIT DIAGRAM 2 AV CIRCUIT DIAGRAM...
Page 31: ...30 3 SERVO SYSCON SCHEMATIC DIAGRAM CIRCUIT DIAGRAM...
Page 32: ...31 4 DIGITAL AUDIO SCHEMATIC DIAGRAM CIRCUIT DIAGRAM...
Page 33: ...32 5 HI FI SW CIRCUIT DIAGRAM CIRCUIT DIAGRAM...
Page 34: ...33 CIRCUIT DIAGRAM 6 IF MPX PDC INPUT OUTPUT SCHEMATIC DIAGRAM...
Page 35: ...34 PCB CIRCUIT BOARD 1 1 VCR MAIN...
Page 36: ...35 PCB CIRCUIT BOARD 1 2 POWER...
Page 37: ...36 PCB CIRCUIT BOARD 1 3 LOGIC...
Page 39: ...38 INSTRUMENT DISASSEMBLY FIG 3 C PANEL FRONT DISASSEMBLY...
Page 40: ...39 INSTRUMENT DISASSEMBLY FIG 4 D LOGIC PCB DISASSEMBLY...
Page 41: ...40 INSTRUMENT DISASSEMBLY FIG 5 E DECK AND MAIN PARTS DISASSEMBLY...
Page 42: ...41 INSTRUMENT DISASSEMBLY FIG 6 F MAIN PCB DISASSEMBLY...
Page 43: ...42 INSTRUMENT DISASSEMBLY FIG 7 G MAIN CHASSIS DISASSEMBLY...
