DOWNLOAD LG 32LV5500-SD (CHASSIS:LJ12E) Service Manual ↓ Size: 15.56 MB | Pages: 108 in PDF or view online for FREE

Model
32LV5500-SD (CHASSIS:LJ12E)
Pages
108
Size
15.56 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
32lv5500-sd-chassis-lj12e.pdf
Date
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LG 32LV5500-SD (CHASSIS:LJ12E) Service Manual ▷ View online

ⓒ LG Electronics. Inc.2009
Contents of LCD TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
21
B. Power error_No power
Check front display LED
A17
22
Check power input Voltage & ST-BY 5V
A18
23
Checking method when power is ON
A19
24
POWER BOARD voltage measuring method
A4
25
26
B. Power error_Off when on, off while 
viewing
POWER OFF MODE checking method
A22
27
B. Power error_Off when on, off while 
viewing
POWER BOARD PIN voltage checking 
method
A19
28
C. Audio error_No audio/Normal video  
Checking method in menu when there is no 
audio
A24
29
Voltage and speaker checking method when 
there is no audio
A25
30
C. Audio error_Wrecked
audio/discontinuation
Voltage and speaker checking method in 
case of audio error
A25
31
D. Function error_ No response in 
remote controller, key error
Remote controller operation checking 
method
A27
32
D. VCOM Adjustment
Sequence of the Vcom adjustment
A28
Continued from previous page
ⓒ LG Electronics. Inc.2009
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 
After turning on the power and disassembling the case, check with the naked eye, 
whether you can see light from 4 locations.
<ALL MODELS>
LCD  TV
A1
2010. 12 .14
ⓒ LG Electronics. Inc.2009
Standard Repair Process Detail Technical Manual
LED driver  B+ 24V measuring method
A. Video error_No video/Normal audio 
A2
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A2
Check the DC 24V, 12V, 3.5V and Inverter on
ALEF LED 
Edge LED
P-dim
A-dim
Inverter ON
Error
GND
24V
P203
14
13
12
11
6~10
1~5
P-dim
A-dim
Inverter ON
Error
GND
24V
P202
14
13
12
11
6~10
1~5
2010. 12 .14
ⓒ LG Electronics. Inc.2009
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 6. 
3. After recording the R, G, B (GAIN, Cut) value of Color Temp 
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
Standard Repair Process Detail Technical Manual
Check White Balance value
A. Video error_No video/Normal audio 
<ALL MODELS>
A4
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A3
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 7. 
3. After recording the R, G, B (GAIN, Cut) value of Color Temp 
(Cool/Medium/Warm), re-enter the value after replacing the MAIN BOARD.
2010. 12 .14
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