Daewoo DC-S83D1D, Руководство по обслуживанию

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17
TROUBLESHOOTING
16
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 IC601 pin
#3, 13?
Check IC501.
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
Replace IC601.
YES
Comparing with switching table, are SWA, B CTL SIGNAL
right at IC601 pin #9,10?
NO
Check Output JACK.
YES
YES NO
c. AV2 E-E
No sound in AV2 E-E mode.
NO
Check Input AV2 JACK Is Audio signal at IC251 pin#8, 9?
Is Audio signal output at IC601 pin
#3, 13?
Check IC501.
Is Audio signal output at IC251
pin#19, 20?
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
Replace IC601.
YES
Comparing with switching table, are SWA, B CTL SIGNAL
right at IC601 pin #9,10?
NO
Check Output JACK.
YES
YES
NO