Daewoo Rautz NC-8008EB Service Manual page 9

Trouble Shooting Guide
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No
PWM Output of
IC801 is OK?
Yes
PWM Output of
No
Digital AMP is OK?
Check Bias Voltage 3,3V of IC803/804
Yes
Check short between Signal to GND or VCC
Power Down of
No
Digital AMP is OK?
Yes
Check AMP-PD(37p) of IC801
No
Speaker Output
is OK?
Yes
OK
No
Supplied Power
is OK?
Yes
Check Supplied Power 3.3V
Check LPF L801 to L806
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