5. Trouble Shooting Guide
Audio Part
1. DVD Abnormal
AUDIO Abnormal
Check if the WC701
is OK.No1
Reconnect it
Yes
Check if the IC202
Check if thePIN 23,24, 27, 28, 29,
CW507No30, 33, 34 and IC201No
waveform is OK.PIN 27, 28, 33, 34
waveform is OK.
Refer to Regulator circuit.
Refer to IC302, IC309.Check if the IC201, 202
YesNo
PIN 14 is OK.
Check if the
CW503 PIN 3NoCheck POWER circuit.Yes
waveform is OK.Check OSC circuit XC201.
Refer to MPEG Decoder
circuit IC501.Check if the
YesIC201, IC202 PIN 35 isNo
YesHigh?
Check MICOM ControlCheck if thecircuit.
CW304 PIN 20NoYes
waveform is OK.
Check if theRefer to STA304A.
IC304 PIN 5No
Yeswaveform is OK.
Refer to Main PCB
12.288MHz.
Check if theYes
IC301 PIN 39, 40, 41NoCheck if the J801No
waveform are OK.waveform is OK.
Check if theRefer to Regulator circuit
IC302, IC309IC304 PIN 28Check if the
YesRefer to Reset circuitwaveform is OK.NoIC801, IC802, IC803 PINNo
4, 7, 12, 15 waveform
are OK.
Check if the
CW204 PIN 8, 9, 10,NoYes
waveform are OK.
Yes
Refer to connectorRefer to CN203Check Micom interface line.YesRefer to POWER circuit.
Check if the
YesIC801, IC802, IC803 PINNo
27 is High.
Yes
1
OKRefer to Digital Amp.Check short parretn.
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ACEC
DAEWOO
