DOWNLOAD LG 55LM4600 (CHASSIS:LJ21C) Service Manual ↓ Size: 9.55 MB | Pages: 86 in PDF or view online for FREE

Model
55LM4600 (CHASSIS:LJ21C)
Pages
86
Size
9.55 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
55lm4600-chassis-lj21c.pdf
Date
PREV: LG 55LM4600 (CHASSIS:LC21C) Service Manual

LG 55LM4600 (CHASSIS:LJ21C) Service Manual ▷ View online

- 16 -
7. EYE-Q function check
Step 1) Turn on TV
Step 2) Press EYE key of Adj. R/C
Step 3)  Cover  the  Eye  Q  II  sensor  on  the  front  of  the  using 
your hand and wait for 6 seconds
Step 4)  Confirm that R/G/B value is lower than 10 of the “Raw 
Data  (Sensor  data,  Back  light  )”.  If  after  6  seconds, 
R/G/B  value  is  not  lower  than  10,  replace  Eye  Q  II 
sensor
Step 5)  Remove your hand from the Eye Q II sensor and wait 
for 6 seconds 
Step 6) Confirm that “ok” pop up. 
             If change is not seen, replace Eye Q II sensor
- 17 -
SCREW ASSEMBLY WORKING GUIDE
• FAB31339402
(M3*L4.5, BK, Machine)
• 14EA
• FAB31339201
(M3*L10, BK, Taptite)
• 9EA
• FAB30016122 
(M4*L20, BK, Taptite)
• 4EA
D
D
D
D
D
D
D
D
D
D
D
D
■ Screw specification and application situation
C
A
A
A
A
A
A
A
A
A
A
A
A
B
C
C
C
C
C
C
C
• FAB30078812 
(M6*L10, BK, Machine)
4EA
B
B
B
A
A
C
C
C
A
A
A
A
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
B
B
B
B
B
B
A
A
A
A
C
A
C
※
Warning
Check Screw Type When Screw is assembled 
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
A
- 18 -
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
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