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 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
red square area of right picture as reference temperature of defrost temp. sensor.

Note

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

DIAGNOSIS 1

PROCEDURE 1

Step 1

Remove all the drawers.

Step 2

Remove all shelves.

Step 3

Remove the vertical partition plate:
a. Insert 2mm slotted screwdriver into the gap;
b. Lever up the cover plate from bottom;

c. Insert 2mm slotted screwdriver into the side gap;
d. Lever up the cover plate from bottom;

e. Pull the bottom end of cover out;
f. Pull the top of the cover out;

g. Take pipes out and place in horizontal position;
h. Push latch down and lift top out of cavity;

i. Push latch up and pull bottom out of the cavity;
j. Pull partition outward and remove partition.

k. Internal view after partition has been removed.

Step 4

Dismantle the air duct.
a. Hold the bottom of air duct;
b. Pull air duct out from below;

c. Disconnect the terminal for fan motor;

d. Disconnect the terminal of freezer temp. sensor;

e. 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.

NOTE


DIAGNOSIS 2

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 IN THE SAME POSITION AS PHOTO.

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 the sensor and terminals are OK, or replace 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 defrost temp. sensor.

NOTE


DIAGNOSIS 4

PROCEDURE 4

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 5

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 6

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.

Step 5

Unfasten and remove mainboard.
Reverse above steps to install mainboard.

DIAGNOSIS 4

PROCEDURE 7

Tip 1

When installing the air duct, make sure to move wires out of the way to prevent crushing by air duct.

Tip 2

After pushing air duct back into position, you should hear a clicking sound. If not, repeat again.

Tip 3

Check to see whether there is a wide gap between air duct and cabinet. If so, reinstall air duct again.

Tip 4

Check to ensure latches are properly inserted into cavities.

Tip 5

First, insert top of cover plate into the gap, then bend plate to insert the bottom. Lastly, snap middle into slot.

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