CHECK AND TEST 1
Step 1
Disassemble the compressor room cover.
Step 2
Unscrew the screw of PCB cover.
Step 3
Remove the PCB cover.
Step 4
Push the PCB box out to disassemble the PCB along with the PCB box.
Attention: do not damage the PCB when pushing the PCB control panel box out.
Step 5
Check if the terminal is loose.
DIAGNOSIS 1
Step 1
Measure the output of supply cord terminal.
Step 2
Measure the output of of light therminal.
DIAGNOSIS 2
Step 1
Use a wire to connect the A & B terminal.
Step 2
Unscrew the screws on the rear light wire connector cover.
Step 3
Prize up to remove the light wire connector cover.
Step 4
Connect the door light wire.
Step 5
Measure the resistance of the terminals from cabinet side.
DIAGNOSIS 3
Step 1
Prize off the buckle and disconnect the terminal.
Step 2
Replace the PCB board as well as the control panel box.
Reverse above steps to install a new PCB and control panel box.
CHECK AND TEST 4
Step 1
After rework, power on the appliance and open the door.
DIAGNOSIS 4
