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23
TROUBLESHOOTING
When RF sound doesnÕt come out.
Is there sound output signal
NO
Check the power of RF101.
Is there sound input signal
on pin 43 of IC101?
NO
Check the C119.
YES
Is there sound output
signal
NO
Check the Power of IC101
(1,11,33 :5V)
YES
Is there sound input signal
on pin 20,24 of IC109?
NO
Check the R191,R192,C160,
C161,C625,C626.
Is there sound output signal
NO
Check the Power of IC109.
(2,4 pin:12V)
YES
Is there sound output signal
NO
Check the C225,C235,
R223,R243.
YES
Confirm sound part.
YES
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 ...