LG 42LW6500-JA (CHASSIS:LE13E) Service Manual ▷ View online
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.
whether you can see light from 4 locations.
<ALL MODELS>
LCD TV
A1
2011.01.20
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
A2-2
Check the DC 24V, 12V, 3.5V and Inverter on
ALEF 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
2011.01.20
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
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>
A3
Established
date
Revised
date
Error
symptom
Content
LCD TV
A3
2011. 1 .19
Standard Repair Process Detail Technical Manual
Power Board voltage measuring method
A. Video error_No video/ Audio
A4
Established
date
Revised
date
Error
symptom
Content
LCD TV
A4-1
Check the DC 20V/24V, 12V, 3.5V.
Edge LED 42”/47”
2011. 1 .19
Error-out
24
NC
(Lamp
SCANNING 모델:
PWM Dim #2)
SCANNING 모델:
PWM Dim #2)
23
PWM Dim #1
22
12V
21
Lamp : A-dim
LED : NC
20
12V
19
Inverter ON
18
12V
17
NC
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
24pin
Pin layout
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