LG 55LB6500-um - Page 99

D. General Function Problem
Remote control & Local switch checking
Standard Repair Process
Established
date
Revised date
10/13
LCD TV
Error
symptom
2013. 11 .30
Y
1. Remote control(R/C) operating error
Check R/C itself
Normal
Check & Repair
Normal
Check B+ 3 5V
☞A27
Normal
N
Check IR
Normal
Y
☞A27
Replace
Main B/D
Y
☞A27
Y
N
Check
R/C
itself
Operation
Normal
operating?
Y
Check R/C Operating Check & Replace
Cable connection
Connector solder
Normal
operating?
Check
B+
3
.
5V
On Main B/D
Normal
Voltage?
Close
Check 3.5v on Power B/D
☞A4
Check
IR
Output signal
Normal
Signal?
N
Repair/Replace
IR B/D
N
Normal
operating?
Close
If R/C operate,
Explain the customer
cause is interference
When turn off light
in room
Baterry of R/C
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
IR
B/D
Replace R/C
cause
is
interference
from light in room.
N
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