LG 55LM860V (CHASSIS:LD23E) Service Manual ▷ View online
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
Check the DC 24V, 12V, 3.5V.
ALEF LED
2011. 12 .14
24 Pin
(Power Board ↔ Main Board) -
공통
SMAW200-H24S (YEONHO)
1
Power on
2
20V (24V)
3
20V (24V)
4
20V (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
N.C
(Only LPB : V-sync)
17
12V
18
Inverter On/off
19
12V
20
N.C
(LPB, Lamp : A-dim)
21
12V
22
PWM Dim #1
23
N.C
(only Lamp SCANNING Model
: PWM Dim #2)
24
Error-out
Settings
Æ Set up
Æ
Manual Tuning
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
A6
2011. 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
remote controller for adjustment
Version
<ALL MODELS>
A7
Established
date
Revised
date
Error
symptom
Content
LCD TV
A7
2011. 12 .14
Checking method:
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.
1. Check the signal strength or check whether the screen is normal when the external device is connected.
2. After measuring each voltage from power supply, finally replace the MAIN BOARD.
Standard Repair Process Detail Technical Manual
TUNER checking part
A. Video error_Video error, video lag/stop
<ALL MODELS>
A8
Established
date
Revised
date
Error
symptom
Content
LCD TV
A8
2011. 12 .14
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