LG 32LB520B Service Manual page 40

Standard Repair Process
Error
LED TV
symptom
1. Remote control(R/C) operating error
Normal
Check R/C itself
Operating
Operation
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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D. Function error
Remote control & Local switch checking
☞A17
Y
Check & Repair
Cable connection
Connector solder
N
Y
Normal
End
Operating
N
Replace R/C
☞A17
N
Check +5V for
Normal
Operating
IR Sensor
Y
☞A4
End Check +5V on main board
replace main board or change
IR SERSOR
Established
2014. 07.07
date
Revised date
☞A17
Y
Normal Check IR
Voltage
Output signal
N
11/14
Replace
Main B/D
Y
Normal
Signal
N
Repair/Replace
IR B/D