15
TROUBLESHOOTING
A. PVR S-Video Output
DVD S-Video Output
Is there video signal at pin 1,3 of
IC306 and IC309
NO
Inspect Q301,Q302,Q307,Q308
and filter circuit
Is there video signal
at pin 1,3 of IC314 ?
NO
Inspect C484,C485,
R377,R380
YES
NO
Inspect IC304
YES
C. PVR RGB Output
DVD RGB Output
Is there video signal at pin 1,3 at
IC311, IC312 and IC313 ?
NO
Inspect Q304,
Q305,Q306,Q310, Q311, Q312
and filter circuit
Is there video signal
at pin 7 of IC311,
IC312,IC313 ?
NO
Inspect IC311,
IC312,IC313 and
C473,C475,C478
YES
NO
Inspect IC304
YES
B. PVR CVBS Output
DVD CVBS Output
Is there video signal
at pin 1,3 of IC310 ?
NO
Inspect Q303,Q309 and filter circuit
Is there video signal
at pin 7 of IC310 ?
NO
Inspect IC310 and C471
YES
Is there video signal
at pin 29,30 of IC109 ?
NO
Inspect C624,R671,
R672,R673,Q101,
R688,C644,
YES
NO
Inspect IC304
YES
Содержание DHD-4000D
Страница 30: ...29 BLOCK DIAGRAM VIDEO BLOCK ...
Страница 32: ...31 BLOCK DIAGRAM TUNER BLOCK ...
Страница 40: ...39 SCHEMATIC DIAGRAM ...
Страница 44: ...43 SCHEMATIC DIAGRAM SCHEMATIC DIAGRAM ...
Страница 45: ...44 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW ...
Страница 49: ......
Страница 66: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp ...