TROUBLE SHOOTING FLOW CHART
1. POWER CIRCUIT
Caution : When checking the primary circuit , be sure to use an isolation transformer.
A. CHECKING THE PRIMARY CIRCUIT.
No output Voltage.
NO
NO
NO
YES
Prepare the oscilloscope
connected the isolated
transformer
Check L801
Check R802, D801,D804
YES
YES
YES
YES
YES
YES
YES
YES
Check R804, R803,R809,R807
C806,C807,D805
Check F801 Fuse.
Is voltage applied to D801~D804?
Is voltage applied to the
terminals of C803?
Is voltage applied to
Q801 S?
Is voltage output from pin 3
of IC801?
Check Q801, Q802, Q803,
Q804, D805,L802
Check the Secondary circuit
Check D815
*D805:Protector Diode
* Protector Diode
Summary of Contents for DV-T1B1WX-BB/D
Page 4: ...3 INTERCONNECT WIRING DIAGRAM...
Page 5: ...4 POWER SUPPLY SCHEMATIC CIRCUIT DIAGRAM MIDDLE EAST...
Page 7: ...6 POWER BLOCK DIAGRAM...
Page 8: ...7 SERVO SYSCON SCHEMATIC DIAGRAM MIDDLE EAST...
Page 10: ...9 SERVO SYSCON BLOCK DIAGRAM...
Page 11: ...10 VIDEO AUDIO SCHEMATIC DIAGRAM...
Page 13: ...VIDEO RECORD PATH FOR PAL 12 VIDEO PLAYBACK PATH FOR PAL...
Page 14: ...13 PIF SCHEMATIC DIAGRAM...
Page 16: ...15...
Page 17: ...16...
Page 29: ......