LG LPA-735 Service Manual page 19

B. AUDIO OUT ABNORMAL
AUDIO OUT
ABNORMAL
YES
Check Audio Jack &
Mode
YES
Check +9V
YES
Check Signals from
MPEG
YES
Replace IC(4U3)
D. AUDIO IN/SPEAKER ABNORMAL
AUDIO IN/SPEAK-
ER ABNORMAL
Check Audio Jack &
Mode S/W
Is 7J2 OK .
Is Speakers OK
.Replace
Replace IC(5U1)
C.VIDEO OUT ABNORMAL
E. VIDEO IN ABNORMAL
Replace 7J2
Speakers
3-12
VIDEO OUT
ABNORMAL
YES
Check Video Jack &
Mode
YES
Check Video signals
from MPEG
YES
Check IC(8U1)
YES
Check LC Filter
VIDEO IN
ABNORMAL
Check Video Jack
& Mode
Is 8Q1 OK .
Check 7J2
Refer to LCD part
Replace 8Q1