DOWNLOAD LG 65LM620S-ZB / 65LM620T-ZB (CHASSIS:LD22E) Service Manual ↓ Size: 10.53 MB | Pages: 118 in PDF or view online for FREE

Model
65LM620S-ZB 65LM620T-ZB (CHASSIS:LD22E)
Pages
118
Size
10.53 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
65lm620s-zb-65lm620t-zb-chassis-ld22e.pdf
Date
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LG 65LM620S-ZB / 65LM620T-ZB (CHASSIS:LD22E) Service Manual ▷ View online

Replace module
Zoom part with 
exterior damage
Module
damage
Cabinet
damage
Replace cabinet
Replace remote controller
Remote 
controller
damage
Stand
dent
Replace stand
F. Exterior defect
Exterior defect 
Adjust VCOM
Established
date 
Revised date 
13/13
LCD  TV
Error
symptom
Standard Repair Process
☞A28
2010. 12 .14
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
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
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
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
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