Daewoo DF-5500(S/P) Service Manual page 18

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