LG 55LM660S / 55LM660T (CHASSIS:LD22E) Service Manual ▷ View online
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
Check the DC 24V, 12V, 3.5V.
24 Pin
(Power Board ↔ Main Board)
SMAW200-H24S (YEONHO)
1
Power on
2
24V
3
24V
4
24V
5
GND
6
GND
7
GND
8
GND
9
3.5V
10
3.5V
11
3.5V
12
3.5V
13
GND
14
GND
15
GND
16
GND
17
12V
18
Inverter On/off
19
12V
20
Lamp : A-Dim
LED : N.C
21
12V
22
PWM Dim #1
23
GND/P_DIM2
•
Lamp SCANNING Model
: PWM Dim #2
24
Error-out
Edge LED
2010. 12 .14
MENU -
Æ Set up
Æ
support -
Æ signal test
-
Æ select channel
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
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
2010. 12 .14
Standard Repair Process Detail Technical Manual
LCD-TV Version checking method
A. Video error_Video error, video lag/stop
1. Checking method for remote controller for adjustment
Press the IN-START with the remote
controller for adjustment
controller for adjustment
Version
<ALL MODELS>
A7
Established
date
Revised
date
Error
symptom
Content
LCD TV
2010. 12 .14
Standard Repair Process Detail Technical Manual
LCD TV connection diagram (1)
A. Video error _Vertical/Horizontal bar,
residual image, light spot
As the part connecting to the external input, check the
screen condition by signal
screen condition by signal
A8
Established
date
Revised
date
Error
symptom
Content
LCD TV
<ALL MODELS>
2010. 12 .14
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