CHECK AND TEST 1



Step 1

Unscrew cover of mainboard with a Cross-head screwdriver

Step 2

Check if terminal in PCB area is pushed to final position. If not, reinsert it to final position.


Step 3

Set multimeter to resistance gear.  

Step 4

PCB area, measure the resistance of defrost temp. sensor with a multimeter.



Step 5

Take note of value.

Step 6

Measure the temperature of freezer air duct, near the defrost temp. sensor. Use measured temperature to find the standard resistance value in Temperature-Resistance Chart for Sensor.



DIAGNOSIS 1




PROCEDURE 1

Disconnect the terminal
for display panel.

Step 1

Remove all shelves.

Step 2

Remove upper drawers.

Step 3
Remove bottom drawer  

Step 4

Remove drawer cover.  

Step 5

 Remove glass shelves under drawers.  

Step 6

Prize off the decorative panel and take if off.  

Step 7

Unscrew the upper air duct.

Step 8

Pull outward and take off the upper air duct  

Step 9

Unscrew the lower airduct.  

Step 10

Disconnect the connectors between airduct and cabinet

Step 11

Remove the lower air duct.  



CHECK AND TEST 2


Step 1

Check if terminal is pushed properly into final position.

Step 2

Check if sensor is attached in proper position, as shown in picture. If not, correct it.  

Step 3

Check if wire of defrost sensor is broken. If yes, replace it with a new one.

Step 4

Disconnect terminal of defrost temp. sensor.

Step 5

Check if the terminal is stuffed with foam.  

Step 6

Measure resistance of defrost temp. sensor from terminal in freezer, and take note of it.


Step 7

Measure the temperature of defrost temp. sensor.

DIAGNOSIS 2


CHECK AND TEST 3

Step 1

Set multimeter to resistance gear.

Step 2

Put detector into one end of wires in PCB area. Put another detector into end of wires behind air duct.

DIAGNOSIS 3

PROCEDURE 2

Step 1

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

Step 2

Wrap a belt around knob to make it easier to pull out of display board. 

Tips for installing display.

Tip 1

After connecting terminal, please use tape to fasten wires to avoid crushing with cover.

Tip 2

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

Tip 3

Please press all buttons on display board to make sure it works well.

PROCEDURE 6

Step 1

Unscrew cover of mainboard with a Cross-head screwdriver.

Step 2

Prize off the connector buckles.

Step 3

Disconnect the connectors.

Step 4

Unscrew the mainboard.

Step 5

Prize off the buckle to remove mainboard.

Reverse steps above to install a new    mainboard. 

DIAGNOSIS 4

PROCEDURE 5

Tip 1

Make sure the sealing sponges are in good condition.

Tip 2

When reinstalling the air duct, fasten the wires to avoid crushing with air duct.

Tip 3

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

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