LG 55SM5KD Service Manual page 45

Standard Repair Process Detail Technical Manual
symptom
Monitor Signage
Content
[SM5D Models]
Checking order
1. Check IR cable condition between IR & Main board
2. Check the stand-by 3.5V on the terminal M1.
3. 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.
Error
D. Function error_ No response in remote control,
key error
Remote control operation checking method
JK6201
Established
date
Revised
date
JK6201
M7 GND
M4 +3.5V_ST
M3 NC
M1 IR
M6 EYE_SCL
M5 EYE_SDA
A15
A14
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