LG LBC24360ST Service Manual - Page 44

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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 Step2. Check Driver PCB * Driver PCB located in back plate cover behind the refrigerator. LED Lamp IPM Output check - Measure the voltage between the POWER and COMM pins of the connector as shown below. Check to make sure compressor is receiving voltage from IPM Multi Tester A-Inverter - 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. 44

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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.
*
Driver PCB located in back plate cover
behind the refrigerator.
Step1. Open PCB Cover
Step2. Check Driver PCB
LED Lamp
-
Measure the voltage between the POWER and COMM pins of the connector as shown below.
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.
IPM Output check
A-Inverter
Multi
Tester
44