LG L15V26 Training Manual page 28

CIRCUIT DESCRIPTIONS
30" AUDIO
FLOWCHART
PCB
TROUBLESHOOTING DIAGRAM
Directview LCD Training
Audio
Processor
Composite
Audio Inputs
(Composite, RF, PC)
No Sound
Check volume
level and mute
Check voltages of
the Reset IC (IC603)
Present
Check voltages of
Audio Processor
(IC601)
Present
Check B+ voltages
Problem lies
Present of Audio Amps
elsewhere
(IC604/605)
Audio
Speakers
Amplifier
Ok
Replace Reset IC
Absent
(IC603)
Replace Audio
Absent
Processor (IC601)
Check Power
Absent
Supply
28
Circuit Descriptions