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YES
Check IC702 PS9830
86 PIN CLK input
YES
Check
output of IC100
LC87F5NC8A
21¡PWM_CLK
22¡PWM_DATA
43¡PWM_REST
YES
Check IC702
PS9830 DATA input
78 PIN¡DATA
79 PIN¡CLK
96 PIN¡REST
YES
Check
PWM MODULATOR
output
FL:75(+)74(-)
R:71(+)70(-)
YES
OK
LGE Internal Use Only
Check R791(1M)output
NO
YES
OK
Check
NO
resistance output of LINE
DATA:R797
CLK:R795
RST:R790
YES
OK
Check DVD
NO
ASS`Y PS9830
communication condition
(P7403)
YES
Check IC702
PS9830 DATA input.
YES
OK
NO
Check IC702 PS9830 part.
3-6
Replace the related part.
NO
NO
Replace the related part.
NO
Refer to DVD Troubleshooting.
Check resistance
NO
output of each LINE.
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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