LG 32LG2100 Service Manual page 36

Standard Repair Process
Error
LCD TV
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 Baterry of R/C
in room
If R/C operate, Normal
operating?
Explain the customer
cause is interference
from light in room.
Replace R/C
2. Local(Mechanical) switch operating error
Y
Check R/C Normal
operating?
Operation
N
Move
Power problem
Section
D. General Function Problem
Remote control & Local switch checking
Check & Repair
Y Normal
Cable connection
operating?
Connector solder
Close
Close
N
Check & Repair
Normal
Cable connection
operating?
Connector solder
Y
Close
Established
Revised date
N
Check B+ 5V
Normal
Voltage?
On Main B/D
Y
Check 5v on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don't have problem)
Check & Replace
N
Normal
Assembly status
operating?
(Key PCB + tool )
Close
10
2008. 3 .05
date
Y
Check IR
Signal?
Output signal
N
Repair/Replace
N
Check Key
Output signal
Y
Repair/Replace
Local switch B/D
10/13
Replace
Main B/D
Y
Normal
N
IR B/D
Replace
Main B/D
Y
Normal
Signal?
N