LG 22LG3100 (CHASSIS:LD91M) Service Manual ▷ View online
Replace module
Zoom part with
exterior damage
exterior damage
Module
damage
Cabinet
damage
Replace cabinet
Replace remote controller
Remote
controller
damage
Stand
dent
Replace stand
F. Exterior defect
Exterior defect
Established
date
Revised date
13/13
LCD TV
Error
symptom
Standard Repair Process
13
2009. 7 .30
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
1
Check LCD back light with naked eye
A1
2
Check inverter cable connection
A2
A. Video error_ No video/Normal
audio
audio
3
Check White Balance value
A3
4
Power Board voltage measuring method
A4
5
TUNER input signal strength checking
method
method
A5
6
A. Video error_ No video/Video
lag/stop
lag/stop
LCD-TV Version checking method
A6
7
LCD TV connection diagram (1)
A7
8
Check Link Cable (LVDS) reconnection
condition
condition
A8
9
A. Video error_Color error
Adjustment Test pattern - ADJ Key
A9
10
LCD TV connection diagram (2)
A10
11
Check Link Cable (LVDS) reconnection
condition
condition
A11
12
A. Video error_Vertical/Horizontal bar,
residual image, light spot
residual image, light spot
Adjustment Test pattern - ADJ Key
A12
13
Exchange Module itself (1)
A-
1/5
14
Exchange Module itself (2)
A-
2/5
Continue to the next page
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
15
Check front display LED
A13
16
Check power input Voltage & ST-BY 5V
A14
17
Checking method when power is ON
A15
18
POWER BOARD voltage measuring
method
method
A16
19
B. Power error_No power
Checking mechanical button at Bottom or
Back side
Back side
A17
20
B. Power error_Off when on, off
while viewing
while viewing
POWER OFF MODE checking method
A18
21
B. Power error_Off when on, off
while viewing
while viewing
POWER BOARD PIN voltage checking
method
method
A19
22
Checking method in menu when there is
no audio
no audio
A20
23
C. Audio error_No audio/Normal
video
video
Voltage and speaker checking method
when there is no audio
when there is no audio
A21
24
C. Audio error_Wrecked
audio/discontinuation
audio/discontinuation
Voltage and speaker checking method in
case of audio error
case of audio error
A22
25
D. Function error_ No response in
remote controller, key error
remote controller, key error
Remote controller operation checking
method
method
A23
Continued from previous page
Established
date
Standard Repair Process Detail Technical Manual
Revised
date
A1
Error
symptom
Content
Check LCD back light with naked eye
A. Video
error_No
video/Normal audio
LCD TV
2009. 7 .30
A1
Power On -> disjoint back case -> check lighting at 1 points.
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