Remote Controller Operation Checking Method - LG 79UB980T-TA Service Manual

Standard Repair Process Detail Technical Manual
symptom
LCD TV
Content
<65UB980T-TA>
①
Checking order
1, 2. Check IR cable condition between IR & Main board.
3. Check the st-by 3.5V on the terminal 4,7.
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.
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Only for training and service purposes
Error
D. Function error

Remote controller operation checking method

②
Established
date
Revised
date
A22
2014.02.07
A22
1 GND
2 KEY1
3 KEY2
③
4 +3.5V_ST
5 LOGO_LIG
HT_WAFER
6 C_SPK_L-
7 +3.5V_ST
④
8 GND
9 EYE_SCL
10 EYE_SDA
11 GND
LGE Internal Use Only