DOWNLOAD LG 55LV5500-DD (CHASSIS:LT12E) Service Manual ↓ Size: 11.81 MB | Pages: 106 in PDF or view online for FREE

Model
55LV5500-DD (CHASSIS:LT12E)
Pages
106
Size
11.81 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
55lv5500-dd-chassis-lt12e.pdf
Date
PREV: LG 55LV5400 (CHASSIS:LA12E) Service Manual

LG 55LV5500-DD (CHASSIS:LT12E) Service Manual ▷ View online

ⓒ 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
ⓒ LG Electronics. Inc.2009
Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A5
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A4
Check the DC 24V, 12V, 3.5V.
SMAW200-H24S (YEONHO)
Error-out
24
N.C 
• Lamp SCANNING Model
: PWM Dim #2
23
PWM Dim #1
22
12V
21
Lamp : A-Dim
LED : N.C
20
12V
19
Inverter On/off
18
12V
17
GND
16
GND
15
GND
14
GND
13
3.5V
12
3.5V
11
3.5V
10
3.5V
9
GND
8
GND
7
GND
6
GND
5
20V (24V)
4
20V (24V)
3
20V (24V)
2
Power on
1
24 Pin
(Power Board ↔ Main Board) -
공통
ALEF LED 
Edge LED
2010. 12 .14
ⓒ LG Electronics. Inc.2009
MENU -
Æ Set up 
Æ
support -
Æ signal test
-
Æ select channel 
When the signal is strong, use the 
attenuator (-10dB, -15dB, -20dB etc.)
Standard Repair Process Detail Technical Manual
TUNER input signal strength checking method
A. Video error_Video error, video lag/stop 
<ALL MODELS>
A6
Established 
date 
Revised 
date 
Error 
symptom
Content
LCD  TV
A6
2010. 12 .14
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