LG CED-8042B Manual page 68

No audio output
Insert the audio disc
Is the Q801 Pin 1 (base) 0V?
YES
Does the PWM signal
output at IC501 Pin 79, 80,
87, 88?
YES
Does the audio signal output at
IC802 Pin 1, 7?
YES
Does the audio signal output
at CN303 Pin47, 50?
Does the headphone volume
VR801 control max?
Headphone
YES
Does the audio signal
output at IC801 Pin1, 7?
YES
Does the audio signal output
at the headphone jack
NO
NO
NO
Line-out
NO
NO
NO
NO
JK801?
Check the MICOM IC202
Pin 8 (AUD_MUTE).
Check the IC501.
Check the IC802.
Check the peripheral components
of IC802 and CN303.
Check the headphone volume
VR801.
Check the IC801.
Check the peripheral components
of IC801, JK801 and Cable.
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