LG 86UH9500 Service Manual page 111

Standard Repair Process
Error
symptom
1. Remote control(R/C) operating error
Check R/C itself Normal
operating?
Operation
N
Check R/C Operating Check & Replace
When turn off light
in room
If R/C operate,
Explain the customer
cause is interference
from light in room.
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D. Function error
Remote control & Local switch checking
☞A22
Check & Repair
Y
Cable connection
Connector solder
Baterry of R/C
Y
Normal
Close
operating?
N
Replace R/C
☞A22
Check Stan-by
N
Normal
Voltage On
operating?
Main B/D
Y
☞A18
Check Stan-by voltage on Power B/D
Close
Replace Power B/D or Replace Main B/D
10
Established
date
Revised date
☞A22
Y
Normal Check IR
Voltage?
Output signal
N
10/15
Replace
Main B/D
Y
Normal
Signal?
N
Repair/Replace
IR B/D
LGE Internal Use Only