8.2 RELIABILITY COMPONENTS:

WRONG OR NO ICONS ON DISPLAY, OR ICONS ARE FLASHING

CHECK AND TEST 1

Step 1

If you verify that the wrong icons or no icons are shown on display or icons are flashing...

DIAGNOSIS 1

PROCEDURE 1

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.

CHECK AND TEST 2

Step 1

Check to see if display board works well or not.

DIAGNOSIS 2

PROCEDURE 2

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.

Tip 2

If not clear, disassemble and put tape on points indicated by red circles.

CHECK AND TEST 3

Step 1

Check to see if display board works well or not.

DIAGNOSIS 3

CHECK AND TEST 4

Step 1

Check to verify status of display board.

DIAGNOSIS 4

PROCEDURE 3

Step 1

Unscrew cover of mainboard with a Cross- head screwdriver.

Step 2

Remove the clips.

Step 3

Disconnect terminals.

Step 4

Unscrew the mainboard.

Step 5

Pull out the buckle to
remove the mainboard.

CHECK AND TEST 5

Step 1

Check to see if display board works well or not.

DIAGNOSIS 5

CHECK AND TEST 6

Step 1

No display due to internal wires;
Picture on right shows correct wire order.

DIAGNOSIS 6

PROCEDURE 4

Step 1

Cut off the wire.

Step 2

Peel off the sleeves.

Step 3

Make sure wires are in proper order and connect them.


Step 4

Tin soldering.

Step 5

Cover connecting point with electrical tape.

CHECK AND TEST 7

Step 1

Check to see if display board works well or not.

DIAGNOSIS 7

CHECK AND TEST 8

Step 1

No display, but root causes are not detectable.

DIAGNOSIS 8

PROCEDURE 5

Step 1

Unscrew cover of mainboard with a Cross-head screwdriver.

Step 2

Remove the clips.

Step 3

Disconnect terminals.

Step 4

Unscrew the mainboard.

Step 5

Pull out the buckle to
remove the mainboard.

PROCEDURE 6

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.

CHECK AND TEST 9

Step 1

Check to see if display board works well or not.

DIAGNOSIS 9

PROCEDURE 7

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.

Tip 2

If not clear, disassemble and put tape on points indicated by red circles.

CHECK AND TEST 10

Step 1

Check to see if display board works well or not.

DIAGNOSIS 10

GO BACK TO FAULT LIST - RELIABILITY