17
TROUBLESHOOTING
NO
NO
Inserted L200?
Replace noninserted parts.
Pin 14 of IC202 is +5 Voltage?
Check Power Circuit
YES
YES
NO
Replace IC451?
Signals in Pin 13,14 &15
of IC451?
YES
YES
NO
Check IC601?
Clock signal on Pin 5 of IC202?
NO
NO
Inserted
R211,R212?
Replace noninserted parts.
Signals on Pin 2,3 & 4 of IC202?
Check IC601?
YES
YES
NO
NO
Inserted C214, C209,
C221,C222,R293,R294?
Replace noninserted parts.
Signals on Pin 1,2,11,15
4,5,12&14 of IC201?
Replace IC202
YES
YES
NO
NO
Inserted L205?
Replace noninserted parts.
Pin 16 of IC202 is +12 Voltage?
Check Power Circuit
YES
YES
NEXT PAGE
YES
Summary of Contents for DHD-4000D
Page 30: ...29 BLOCK DIAGRAM VIDEO BLOCK ...
Page 32: ...31 BLOCK DIAGRAM TUNER BLOCK ...
Page 40: ...39 SCHEMATIC DIAGRAM ...
Page 44: ...43 SCHEMATIC DIAGRAM SCHEMATIC DIAGRAM ...
Page 45: ...44 COMPONENTS LOCATION GUIDE ON PCB BOTTOM VIEW ...
Page 49: ......
Page 66: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp ...