Sanyo DVR-V100E Service Manual page 12

TROUBLESHOOTING
d. DVD E-E
No sound in DVD
E-E mode.
Is there DVD Audio at IC102
pin#7,8?
YES
Is 12V obtained at ICD02 pin#8?
YES
Is DVD Audio signaloutput at
ICD02 pin#1,7?
YES
Is Audio(DVD) signal at IC602
pin#5,14?
YES
NO
Is Audio signal output at IC602 pin
Check IC602.
#3,13?
YES
Check Output JACK.
NO
Check IC102, MPEG board
NO
Check POWER circuit.
NO
Check ICD02.
NO
Check ICD02.
20
e. FRONT E-E
No sound in FRONT E-E
mode.
YES
Is 12V obtained at IC251 pin#34?
NO
YES
Is 5V obtained at IC251 pin#40?
NO
Is Audio signal at IC251
pin#10,11?
YES
NO
Is Audio signal output at IC251
Are CLK and DATA obtained at
pin#19, 20?
IC251 pin#42,43?
YES
NO
Is Audio signal output at IC602 pin
Check IC602.
#3, 13?
YES
Check Output JACK.
21
TROUBLESHOOTING
Check POWER circuit.
Check Input FRONT JACK
YES
Replace IC251.