LG 55EM970V-ZA (CHASSIS:ED23E) Service Manual ▷ View online
Contents of OLED TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
1
A. Video error_ No video
Check DC Cable & Optic Cable with naked
eye
eye
A1
2
OLED driver B+ 20V measuring method
A2
3
Check White Balance value
A3
4
A. Video error_ No video/Audio
Power Board voltage measuring method
A4
5
A. Video error_ video error /Video
lag/stop
lag/stop
TUNER input signal strength checking
method
method
A6
6
OLED TV Version checking method
A7
7
Tuner Checking Part
A8
8
A. Video error _Vertical/Horizontal bar,
residual image, light spot
residual image, light spot
OLED TV connection diagram
A9
9
A. Video error_ Color error
Check Link Cable (LVDS) reconnection
condition
condition
A10
10
Adjustment Test pattern - ADJ Key
A12
11
<Appendix>
Defected Type caused by T-Con/
Inverter/ Module
Defected Type caused by T-Con/
Inverter/ Module
Exchange T-Con Board (1)
A-1/5
12
Exchange T-Con Board (2)
A-2/5
Continue to the next page
Contents of OLED TV Standard Repair Process Detail Technical Manual
No.
Error symptom
Content
Page
Remarks
13
B. Power error_ No power
Check front display OLED
A17
14
Check power input Voltage & ST-BY 3.5V
A18
15
Checking method when power is ON
A19
16
B. Power error_Off when on, off
while viewing
while viewing
POWER OFF MODE checking method
A22
17
C. Audio error_ No audio/Normal
video
video
Checking method in menu when there is
no audio
no audio
A24
18
Voltage and speaker checking method
when there is no audio
when there is no audio
A25
19
D. Function error
Remote controller operation checking
method
method
A27
20
Motion Remote operation checking
method
method
A28
21
Wifi operation checking method
A29
Continued from previous page
Established
date
Standard Repair Process Detail Technical Manual
Revised
date
A1
Error
symptom
Content
Check DC Cable&Optic Cable with naked eye
A. Video error_No video
After Locking of DC Cable&Optc Cable locking, check with the naked eye
OLED TV
A1
DC Cable
Optic Cable
2013. 01 .26
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
OLED TV
A4
Check the DC 20.5V, 12V, 3.5V.
P201
P203
-P210 : Power to Module
-P203 : Power to Main Board
-PWR_ON : 12V ENABLE SIGNAL
-DRV_ON : 20.5V ENABLE SIGNAL
-20.5V for Module, AMP output
-3.5V, 12V for System
-P203 : Power to Main Board
-PWR_ON : 12V ENABLE SIGNAL
-DRV_ON : 20.5V ENABLE SIGNAL
-20.5V for Module, AMP output
-3.5V, 12V for System
2013. 01 .26
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