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LG DP9821P Service Manual page 22

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B. AUDIO OUT ABNORMAL
AUDIO OUT
ABNORMAL
YES
Check Audio Jack &
Mode
YES
Check +5V, -5V
YES
Check Signals from
MPEG
YES
Replace IC(U301)
D. AUDIO IN/SPEAKER ABNORMAL
AUDIO IN/SPEAK-
ER ABNORMAL
Check Audio Jack
& Mode S/W
Is CON302 OK.
Is Speakers OK.
Replace
Replace IC(U306)
All manuals and user guides at all-guides.com
C.VIDEO OUT ABNORMAL
E. VIDEO IN ABNORMAL
Replace CON302
Speakers
3-13
VIDEO OUT
ABNORMAL
YES
Check Video Jack &
Mode
YES
Check Video signals
from MPEG
YES
Check IC(U401)
YES
Check LC Filter
VIDEO IN
ABNORMAL
Check Video Jack
& Mode
Is D401 OK.
Check CON402
Refer to LCD part
Replace D401

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