General Function Problem; Remote Control & Local Switch Checking - LG 32LD320 Service Manual

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