LG LMVM2033BM, Service Manual

Page: 15 / 48

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LLLLLLLLLLLLLLLLLLLLL L
N
N N
N
N
NNNNNNNNNNN
N
N
N N N
N
3
4
2
5
6
LLLLLLLLLLLLLLLLLLLLL L
N
N N
N
N
NNNNNNNNNNN
N
N
N N N
N
1 When you push any Key, is
there any beeping sound?
Does the display operate?
No
No
Yes
Is the connector connected
to the PCB?
Power Off
Yes
No Reconnect or
repair the
connector.
Is there any beeping sound in
the continuity test between
the power cord and the
connector ?
- Code “L” to Pin1
- Code “N” to Pin3
No
Yes Check PCB
Go to No. 6 of
this flow chart.
Go to No. 6 of
this flow chart.
Is there any beeping sound in
the continuity test between
the ends of the fuse?
Yes
No Replace the
Fuse.
LLLLLLLLLLLLLLLLLLLLL L
N
N
N N
N
NNNNNNNNNNN
N
N N
N N
N
Is there any beeping sound in
the continuity test between
the ends of the noise filter?
Yes
No Replace the
noise filter.
LLLLLLLLLLLLLLLLLLLLL L
N
N
N
N N
NNNNNNNNNNN
N N
N
N N
N
Replace the PCB.
(EBR75341201)