Read LG 55LV3730 (CHASSIS:LB12B) Service Manual online
Established
date
date
Standard Repair Process Detail Technical Manual
Revised
date
date
LCD TV
Error
symptom
symptom
Check 3.5V and 5V of IR Terminal
Content
D. Function error_ No response in remote controller,
key error
D-1-3
1. Check the DC 5V on the 3.5V_ST terminal. (Pin 6)
2. When checking the Pre-Amp when the power is in ON condition, it is normal
2. 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.
move at all.
3. Input voltage terminal: 3.5V_ST (Pin 6)
4. Remote controller receiver terminal: IR (Pin 9)
4. Remote controller receiver terminal: IR (Pin 9)
1.
①
1.
②
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