5. Trouble Shooting Guide
-. Audio Part
DHC-XD500/S only
1. DVD Abnormal(w/o DSP)
AUDIO Abnormal
Check if the WC701N
is OK.o1
Reconnect it
Yes
Check if the IC202
Check if thePIN 23,24, 27, 28, 29,
CW507N30, 33, 34 and IC201No
waveform is OK.oPIN 27, 28, 33, 34
waveform is OK.
Refer to Regulator circuit.
YesCheck if the IC201, 202No
PIN 14 is OK.
Check if the
N
CW503 PIN 1 to 7oYesCheck POWER circuit.Check OSC circuit XC201.
waveform are OK.
Refer to MPEG Decoder
circuit IC501.Check if the
YesIC201, IC202 PIN 35 isNo
YesHigh?
Check MICOM Control
Check if theNcircuit.
CW203 PIN 1 to 7oYes
waveform are OK.
Refer to CN203Refer to STA304A.
Yes
Check if the
IC211 PIN 4, 7, 9, 12NCheck if the J801No
waveform is OK.owaveform is OK.
Refer to MUX circuit IC211.Check if the
YesIC801, IC802, IC803 PINNo
4, 7, 12, 15 waveform
are OK.
Check if the
IC212 PIN 4, 7, 9N
waveform is OK.Yeso
Refer to MUX circuit IC212.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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