LG 84LM9600 (CHASSIS:LA23J) Service Manual ▷ View online
D. Function error
Remote control & Local switch checking
Y
N
1. Remote control(R/C) operating error
Check R/C itself
Operation
Normal
operating?
Normal
operating?
Y
Close
Replace R/C
If R/C operate,
Explain the customer
cause is interference
from light in room.
Check R/C Operating
When turn off light
in room
Check & Replace
Baterry of R/C
Check & Repair
Cable connection
Connector solder
Connector solder
Normal
operating?
Check B+
3.5V
On Main B/D
Normal
Voltage?
Close
N
N
Check 3.5v on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
Check IR
Output signal
Normal
Signal?
N
Y
Repair/Replace
IR B/D
N
Replace
Main B/D
Y
Standard Repair Process
Established
date
Revised date
10/15
LCD TV
Error
symptom
10
Y
D. Function error
M4 operating checking
Y
N
2. M4(Magic Remocon) operating error
Check M4 itself
Operation
Normal
operating?
Normal
operating?
Y
Close
Check & Replace
Batterry of M4
Is show ok
message?
Press the
wheel
Is show ok
message?
Close
N
N
N
Y
Standard Repair Process
Established
date
Revised date
11/15
LCD TV
Error
symptom
11
Replace M4
Turn off/on the
set and press
the wheel
Press the back
key about 5sec
Close
* If you conduct the loop at 3times, change the M4.
Y
Check the
INSTART menu
RF Receiver ver
is “00.00”?
Y
Check & Repair
RF assy
connection
N
Down load the Firmware
* INSTART MENU
Æ15.RF
Remocon Test
Æ3. Firmware
download
Y
RF Receiver ver
is “00.00”?
N
Close
D. Function error
Wifi operating checking
3.Wifi operating error
Check the
INSTART menu
Wi-Fi Mac value
is “NG”?
Y
Check & Repair
Wifi cable
connection
N
Check the Wifi wafer
(P4301)_1pin
Standard Repair Process
Established
date
Revised date
12/15
LCD TV
Error
symptom
12
Change the Wifi
assy
Normal
Voltage?
Close
Y
Y
N
Replace
Main B/D
Wi-Fi Mac value
is “NG”?
N
Close
Check technical
information
- Fix information
- S/W Version
information
- Fix information
- S/W Version
N
Y
Technical
information?
Check
input
signal
input
signal
Signal
input?
input?
Y
N
External Input and
Component
Recognition error
Check and fix
external device/cable
external device/cable
RGB,HDMI/
DVI, Optical
DVI, Optical
Recognition error
Replace Main B/D
Replace Main B/D
Fix in
accordance
with technical
information
D. Function error
External device recognition error
Established
date
Revised date
13/15
LCD TV
Error
symptom
Standard Repair Process
13
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