LG 84LM9600 (CHASSIS:LB23J) Service Manual ▷ View online
P4102
1
SCL
2
SDA
3
GND
4
KEY1
5
KEY2
6
St 3.5V
7
GND
8
RED_LED
9
IR
10
GND
Checking order
1, 2. Check IR cable condition between IR & Main board.
3. Check the st-by 3.3V on the terminal 6.
4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog
Tester needle moves slowly, and defective when it does not move at all.
Remote controller operation checking method
D. Function error_ No response in remote controller,
key error
key error
<ALL MODELS>
A27
Established
date
Revised
date
Error
symptom
Content
LCD TV
①
②
③
④
2010. 12 .14
Standard Repair Process Detail Technical Manual
Sequence of the Vcom adjustment
D. VCOM Adjustment
1. Case
■
LCD module change
■
T-Con board change
2. Equipment
■
Service Remote controller
3. Adjust sequence
■
Press the ‘adj’ key
■
select V-COM
■
As pushing the right or the left button on the remote controller, And find the V-COM value Which is no or
minimized the Flicker.
(If there is no flicker at default value, Press the exit key and finish the VCOM adjustment.)
(If there is no flicker at default value, Press the exit key and finish the VCOM adjustment.)
■
Push the OK key to store the value. Then the message “Saving OK” is pop.
■
Press the exit key to finish V-COM adjustment.
A28
Established
date
Revised
date
Error
symptom
Content
LCD TV
2010. 12 .14
Standard Repair Process Detail Technical Manual
Solder defect, CNT Broken
T-Con Defect, CNT Broken
T-Con Defect, CNT Broken
T-Con Defect, CNT Broken
Solder defect, CNT Broken
Solder defect, CNT Broken
Solder defect, CNT Broken
Solder defect, CNT Broken
Abnormal Power Section
Solder defect, Short/Crack
Abnormal Power Section
Solder defect, Short/Crack
Appendix : Exchange T-Con Board (1)
GRADATION
Abnormal Power Section
Solder defect, Short/Crack
Abnormal Power Section
Solder defect, Short/Crack
Fuse Open, Abnormal power section
Noise
GRADATION
Abnormal Display
Appendix : Exchange T-Con Board (2)
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