17
TROUBLESHOOTING
b. AV1 E-E
No sound in AV1 E-E mode.
NO
Check Input AV1 JACK
Is Audio signal at IC251 pin#6, 7?
Is Audio signal output at IC602 pin
#3, 13?
Is Audio signal output at IC251
pin#16,17?
Are CLK and DATA obtained at
IC251 pin#42,43?
NO
Is 5V obtained at IC251 pin#40?
Replace IC251.
YES
YES
Is 12V obtained at IC251 pin#34?
NO
YES
Check POWER circuit.
YES
YES
Check Output JACK.
YES
Check Digital board(No sound in
E-E mode)
NO
DF-5500/DFX-5502 SVC 2006.10.14 10:6 AM ˘
` 17 mac001 1200DPI 80LPI