Daewoo HC-4130X - Page 16

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6. Trouble Shooting Guide
3. AUDIO Abnormal
Check if the I2S
output of IC501
is ok?
Replace IC501.
No
Check if the I2S
input of IC201
is ok?
Yes
Check Schmitt Triger IC.
IC204, IC205.
Check if the
PWM output of
IC201 is ok?
Yes
No
Check if the
PWM output of
Digital Amp is
ok?
Yes
Yes
Check if
Speaker Output
is ok?
Yes
OK
Audio Abnormal of
DVD Function
Check if
suppled powe
r
is ok?
Check Regulator Circuit.
IC202.
Yes
Check if EAPD
is high?
No
No
Check PLL Circuit of IC201.
Yes
No
No
Check Bias Voltge 3.3V of IC801 to IC804.
Check short between Signal to GND or VCC.
No
Check LPF L801 to L812.
1
Video Input Function.
2
Tuner Input Function.
3
Digital Audio Input Function.
Audio Part