Sanyo HV-DX4EV Service Manual page 11

TROUBLESHOOTING
d. DVD E-E
No sound in DVD
E-E mode.
Is there DVD Audio at ICD01
pin#7,8?
YES
Is 12V obtained at ICD03 pin#8?
YES
Is DVD Audio signaloutput at
ICD03 pin#1,7?
YES
Is Audio(DVD) signal at IC601
pin#2,15?
YES
NO
Is Audio signal output at IC601 pin
#3, 13?
YES
Check Output JACK.
NO
Check ICD01, DVD board
NO
Check POWER circuit.
NO
Check ICD03.
NO
Check ICD03.
Comparing with switching table, are SWA, B CTL SIGNAL
right at IC601 pin #9,10?
YES
NO
Check IC501.
Replace IC601.
18
e. FRONT E-E
No sound in Front
E-E mode.
Is Audio signal at IC601 pin#1,
12?
YES
NO
Is Audio signal output at IC601 pin
Comparing with switching table, are SWA, B CTL SIGNAL
#3, 13?
YES
YES
Replace IC601.
Check Output JACK.
TROUBLESHOOTING
NO
Check Input Front JACK.
right at IC601 pin #9,10?
NO
Check IC501.
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