CHECK AND TEST 1

Step 1

Unscrew cover of mainboard with a cross-head screwdriver.

Step 2

In PCB area, check if terminal is pushed into final position.
IF NOT, PUSH IT INTO PROPER FINAL POSITION.

Step 3

In PCB, check to see if terminal is full of foam.

IF SO, USE TWEEZERS TO REMOVE FOAM.

Step 4

In PCB area, use multimeter to measure resistance value.

Step 5

Take note of the test result.

Step 6

Use infrared detector to measure the temperature of freezer air duct in area shown in red circle on right, use as reference temperature for defrost temp. sensor.

Step 7

Test temperature of freezer air duct.

Note

Use tested reference temperature to find out standard resistance value in table 1 below.

DIAGNOSIS 1


PROCEDURE 1


Step 1

Remove the freezer drawer.

Step 2

Remove the middle glass shelf located between upper and bottom freezer drawer compartments.

Step 3

Unscrew air duct

a. Check the freezer air duct to find the three screw covers.

b. Remove the screw covers (total of three) on the air duct with slotted screw driver.


c. Unscrew all three screws with Cross- head screw driver.

Step 4

Dismantle the air duct.

a. Catch the bottom of air duct.

b. Pull air duct out from below from the bottom of air duct.

c. Pay attention to the connectors when pulling out the air duct.

d. Disconnect the terminal for fan motor.


e. Disconnect the terminal of temp. sensor.

f. Take the air duct out of the freezer compartment.

g. Remove air duct.

CHECK AND TEST 2

Step 1

Use a multimeter to measure the resistance value of defrost temp. sensor from terminal located in freezer.

a. Insert the detectors into terminal and make sure connection is good;
b. Read the value;

Step 2

Measure the temperature of defrost temp. sensor.

DIAGNOSIS 1


PROCEDURE 2

Step 1

Disconnect the terminal.

Step 2

Cut off plastic tie.

Step 3

Take sensor out of the plastic buckle.

REVERSE STEPS ABOVE TO INSTALL DEFROST SENSOR.

CHECK AND TEST 3

Step 1

Check to see if the terminal is full of foam.

IF SO, USE TWEEZERS TO CRUSH AND REMOVE FOAM.

Step 2

Make sure sensor is properly located by comparing with photo on right.

IF SENSOR IS NOT IN SAME POSITION AS PHOTO, FIX IT.

Step 3

Check to see if sensor wires have been cut off; if so, follow procedures below to rework.

DIAGNOSIS 3


PROCEDURE 3


Step 1


Step 2

Peel off the sleeves.

 

Step 3

Check for proper wire order, then connect them.

Step 4

Tin soldering.

Step 5

Cover point of connection with electrical tape.

CHECK AND TEST 4

Step 1

After confirming that the sensor and terminals are OK, or replacing the sensor, reconnect the terminal.

Step 2

Use a multimeter to measure the resistance value of defrost temp. sensor from terminal located in mainboard area.

a. Insert the detectors into terminal and make sure connection is good;
b. Read the value;

Step 3

Measure the temperature of sensor.

Note


DIAGNOSIS 4


PROCEDURE 4


Tip 1

When re-installing the air duct, move the wires out of the way so that they won’t be crushed by air duct.

 

Tip 2

After pushing air duct into position, it should make a click sound. If no click is heard, do it again.

PROCEDURE 3


Step 1

Push a 6mm sucker onto display and turn the knob to strengthen suction force.

Step 2

Attach strap to knob to facilitate pulling out display board.

Tips for proper installation of display:

Tip 1

After connecting terminal, please tape wires in place to prevent crushing by the cover.

Tip 2

After inserting display into cavity, press edge until you hear a clicking sound, this means the board is pushed properly into final position.

Please press all buttons on display board to make sure display functions properly.

PROCEDURE 4


Step 1

Lever off the cover on door cap.

Step 2

Remove the screws (in total 2).

Step 3

Pull out the plastic;

Step 4

Disconnect the terminal for display panel.

Step 5

Remove tape.

Step 6

Push display out by the corner.

Reverse above steps to install display board.
Follow tips carefully:

Tip 1

Please press all buttons on display board to verify if it is working properly. Make sure all words and icons are clear.

PROCEDURE 5


Step 1

Unscrew cover of mainboard with a Cross- head screwdriver.

Step 2

Disconnect terminals.

Step 3

Unscrew the mainboard.

Step 4

Unfasten and remove mainboard.

Reverse above steps to install mainboard.

DIAGNOSIS 4


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