26
TROUBLESHOOTING
1. POWER circuit
✓
Caution
You must use insulated trance during the first part test of POWER circuit.
No POWER
POWER cord/fuse is OK?
Voltage connected at D801?
Voltage connected at L804?
Switching wave at T801 pin
#6,7,8?
D821, D822, D823, D824, D825,
D826, D827 are OK?
Exchange POWER code/fuse
Check L801,L802
Check Q801
Exchange inferior ITEM
Check IC801, IC802
NO
YES
YES
YES
YES
NO
NO
NO
NO
+5V obtained at IC802 base and
+2.5V obtained at emitter?
YES
+12V obtained at Q823 drain and +5V
obtained at Q824 drain?
Check D803,D804,D805
+3.3V obtained at Q821, Q822 base when
POWER OFF "H"?
YES
NO
Check Q823, Q824, Q821, Q822 and
neighboring ITEM
Check L812, L822
NO
Check DVD PCB
NO
All manuals and user guides at all-guides.com
Summary of Contents for DQD-6100D
Page 6: ...5 CIRCUIT DIAGRAM VIDEO All manuals and user guides at all guides com a l l g u i d e s c o m...
Page 7: ...6 CIRCUIT DIAGRAM AUDIO All manuals and user guides at all guides com...
Page 8: ...7 CIRCUIT DIAGRAM VFD JOG All manuals and user guides at all guides com...
Page 9: ...8 CIRCUIT DIAGRAM ETC All manuals and user guides at all guides com...
Page 10: ...9 CIRCUIT DIAGRAM VCR_INT DVD All manuals and user guides at all guides com...
Page 12: ...11 CIRCUIT DIAGRAM CPU ZR36703 DVD All manuals and user guides at all guides com...
Page 13: ...12 CIRCUIT DIAGRAM MPEG DECODER All manuals and user guides at all guides com...
Page 48: ...47 DISASSEMBLY All manuals and user guides at all guides com...
Page 49: ...48 DISASSEMBLY All manuals and user guides at all guides com...
Page 50: ...49 DISASSEMBLY All manuals and user guides at all guides com...
Page 51: ...50 DISASSEMBLY All manuals and user guides at all guides com a l l g u i d e s c o m...
