Daewoo DHC-XD 350, Руководство по обслуживанию

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15
5. Trouble Shooting Guide
DHC-XD350
Check if the IC202
PIN 23,24, 27, 28, 29,
30, 33, 34 and IC201
PIN 27, 28, 33, 34
waveform is OK.
Check if the J801
waveform is OK.
OK
Check if the IC201, 202
PIN 14 is OK.
Check if the
IC201, IC202 PIN 35 is
High?
Refer to STA304A.
Check if the
IC801, IC802, IC803 PIN
4, 7, 12, 15 waveform
are OK.
Refer to POWER circuit.
Refer to Digital Amp.
Check POWER circuit.
Check OSC circuit XC201.
Check MICOM Control
circuit.
No
No
Yes
Yes
No
Yes
Yes
No
No
Yes
Check if the WC701
is OK.
Check if the
CW507
waveform is OK.
Check if the
CW503 PIN 3
waveform is OK.
Check if the
CW304 PIN 20
waveform is OK.
Check if the
IC301 PIN 39, 40, 41
waveform are OK.
Check if the
CW204 PIN 8, 9, 10,
waveform are OK.
Reconnect it
Refer to Regulator circuit.
Refer to IC302, IC309.
Refer to MPEG Decoder
circuit IC501.
Refer to CN203
Refer to Regulator circuit
IC302, IC309
Refer to Reset circuit
Refer to connector
Yes
Yes
No
No
No
No
No
Yes
Yes
Yes
No
Yes
1
1
2. DVD Abnormal(with DSP)
AUDIO Abnormal
Check if the
IC801, IC802, IC803 PIN
27 is High.
Yes
Check short parretn.
No
Check if the
IC304 PIN 5
waveform is OK.
Check if the
IC304 PIN 28
waveform is OK.
Refer to Main PCB
12.288MHz.
Check Micom interface line.
No
No
Yes
Yes
-. Audio Part