CHECK AND TEST 1

Step 1

Unscrew cover of mainboard with a Cross-head screwdriver.

Step 2

Insert multimeter detection pins into mainboard output.

Step 3

Open one fridge door.

Step 4

Test output of mainboard.

DIAGNOSIS 1

PROCEDURE 1

Step 1

Unscrew cover of mainboard with a Cross-head screwdriver.

Step 2

Disconnect terminals.

Step 3

Pull out earthing wires.

Step 4

Unscrew the mainboard.

CHECK AND TEST 2

Step 1

After replacing mainboard, open one fridge door to see if LED is on or not.

Step 2

Open fridge door and freezer door on same side to same degree for 5 seconds to see if LED is off or not.

DIAGNOSIS 2

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