LG LFXS28566S Service Manual page 81

12-1 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
- 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.
- After initial power-up, when the compressor begins to operate, wait 10
minutes before checking.
- The compressor is operating normally if the voltage is greater than 80V.
- 8 1 -
IPM Output check