LG 55LM4600 (CHASSIS:LJ21C) Service Manual ▷ View online
- 17 -
SCREW ASSEMBLY WORKING GUIDE
• FAB31339402
(M3*L4.5, BK, Machine)
• 12EA
• FAB31339201
(M3*L10, BK, Taptite)
• 9EA
• FAB30016122
(M4*L20, BK, Taptite)
• 4EA
D
D
D
D
D
D
D
D
C
C
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
B
B
C
C
C
C
C
C
C
C
C
C
C
C
C
C
• FAB30078812
(M6*L10, BK, Machine)
4EA
4EA
B
B
B
B
B
B
A
A
A
A
C
C
■ Screw specification and application situation
A
C
※
Warning
Check Screw Type When Screw is assembled
at Part. If Screw is used at the part
Module will get damaged
at Part. If Screw is used at the part
Module will get damaged
A
A
C
※
Warning
Check Screw Type When Screw is assembled
at Part. If Screw is used at the part
Module will get damaged
at Part. If Screw is used at the part
Module will get damaged
A
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TROUBLE SHOOTING
No power
Check 24V, 12V, 3.5V
of Power B/D
Check short of Main B/D
or Change Power B/D
Pass
Check Output of
Q403, IC407, IC401
Check P403 Connector
Change LED Assy
: [A] PROCESS
Fail
Fail
Pass
Pass
Check LED Assy
Check short of
IC402, IC403
Pass
Check short of
Q403, IC407, IC401
Fail
Re-soldering or Change defect
part of Q403, IC407, IC401
Fail
Re-soldering or Change defect
part of Q403, IC407, IC401
Fail
- 19 -
No Raster
: [B] Process
Check LED status
On Display Unit
Repeat A PROCESS
Pass
Fail
Check Output of IC1401
Change IC1401
Fail
Change Inverter Connector
Or Inverter
Fail
Pass
Fail
Pass
Change LVDS Cable
Fail
Check LVDS Cable
Pass
Check Panel Link Cable
Or Module
Change Panel Link Cable
Or Module
Check Inverter Connector
Or Inverter
Pass
- 20 -
No Raster on PC Signal
Check Input source Cable And Jack
Pass
Re-soldering or
Change the defect part
Repeat [A], & [B] Process
Pass
Check the Input/Output
Of JK1104
Fail
Pass
Check the Input/Output
Of IC101
Fail
Re-soldering or
Change the defect part
Pass
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