LG 49VM5C Service Manual page 30

Standard Repair Process
Error
Signage Monitor
symptom
1. Remote control(R/C) operating error
Normal
Check R/C itself
operating?
Operation
N
Check R/C Operating Check & Replace
When turn off light Baterry of R/C
in room
If R/C operate,
Explain the customer
cause is interference
from light in room.
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C. Function error
Remote control & Local switch checking
☞A10
Check & Repair
Y
Cable connection
Connector solder
Y
Normal
Close
operating?
N
Replace R/C
☞A10
N
Normal Check B+ 3.5V
operating?
On Main B/D
Y
☞A6
Close
Check12V on Power B/D
Replace Power B/D or
(Power B/D don't have problem)
Established
date
Revised date
☞A10
Y
Normal Check IR
Voltage?
Output signal
N
Replace Main B/D
Replace
Main B/D
Y
Normal
Signal?
N
Repair/Replace
IR B/D
LGE Internal Use Only