LG LFXS29766 Series Service Manual page 83

11-1 Check A
- There is PC Board located in the PCB case.
The control driver is PC board for the compressor.
- This step shows the source voltage of the driver PC board.
Step1. Open PCB Cover
* Driver PCB located in back plate cover
behind the refrigerator.
- Measure the voltage between the POWER and COMM pins of the connector as shown below.
Step2. Check Driver PCB
Check to make sure compressor is receiving voltage from IPM
- In order to determine whether the compressor is operating normally,
check the output voltage during the refrigeration cycle.
Multi
Tester
- After initial power-up, when the compressor begins to operate, wait 10
A-Inverter minutes before checking.
- The compressor is operating normally if the voltage is greater than 80V.
- 83 -
LED Lamp
IPM Output check