16
TROUBLESHOOTING
4. AUDIO circuit
1. No Audio from AV1 output and Composite output on PVR Mode
NO
NO
NO
Pin 16 of IC206 is +12
Voltage?
Inserted L217?
Replace noninserted parts
NO
Replace noninserted parts.
Inserted
C225, C235 R223,R242?
Inserted
C216, C234, R222,R241?
YES
Check
CANAL circuit
Check Pin 3 &
4 of P302
YES
Signals in Pin 1,12
or Pin 8,15 of IC206 ?
NO
Replace noninserted parts.
YES
NO
NO
Inserted
C251,C257,R286,R287?
Replace noninserted parts.
Signals in Pin 1, 5 of IC451?
Replace IC206
YES
NO
NO
Inserted L209?
Replace noninserted parts.
YES
Pin 23 &18 of IC451 is +5 Voltage?
YES
NO
Pin 8 of IC451 is +5
Voltage?
NO
Inserted R454?
Replace IC451
YES
Clock signal on Pin 16 of
IC451
NO
Check Pin 4 &37
of IC304
YES
YES
NEXT PAGE
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 ...