Audio Circuit (Hi-Fi) - DAEWOO ELECTRONICS DV-F882DY-C Service Manual

3-5. AUDIO CIRCUIT (Hi-Fi)

A. Troubleshooting of E-E mode
No sound in the E-E mode
Is 12V applied to pin a
of IC201?
YES
Is 5V applied to pin 3
g, of IC201?
YES
Is signal input into
pin @, # of IC 201
in TV mode?
YES
Is signal input into
pin ^, & of IC 201
in LINE mode?
YES
Is 5V and clock data
applied to pin 4, 5
of IC201?
YES
Is there output at
pin ", ' of IC201?
YES
Check Q203 base; 5V
collector; 0V
YES
Check Q200, Q201, Q202
base; 0V
YES
Check SCART Jack
NO
POWER circuit
NO
NO
NO
NO
Check SYSCON
NO
Change IC201
NO
Check SYSCON
NO
Change Q200, Q201, Q202
27
Check
Check
PIF circuit
Check
SCART jack