LG DA-3520, Service Manual

Page: 12 / 56

- 2-4 -
Front Circuit (2/2)
Check
if the Power part of the
Front is OK.
Check if the
Power part of the
Front is OK.
Check if
R401~R415
OK.
Check if
CN401 Pins3, 4
Waverfrom
OK.
Check if
R430, R431
OK.
Refer to Micom
Circuit
Refer to Micom
Circuit.
Refer to
power(SMPS).
Refer to
power(SMPS).
Refer to SMPS part.
Refer to SMPS.
Replace R401~R415.
Replace R430, R431.
Check
if the Power part of the
Front is OK.
Check if the
Power Part of the
Front is OK.
Check if the
RMC401Volume
is OK (5V).
Check if the
Remocon waveform of
the CN401.
Check if the
CN401 pin11
is Low.
Check if
headphoneJack
in JK401 is
OK.
Refer to M-COM
Circuit.
Check Main B/D.
Replace RMC 401. Check RMC Circuit.
Refer to Micom
Circuit.
Check JK401 Circuit.