8.1 RELIABILITY FAULTS:

BUTTON ON DISPLAY DOESEN'T WORK

CHECK AND TEST 1

Step 1

If you have verified that it is impossible to adjust
settings using the button on the display board.

DIAGNOSIS 1



CASE 1:

METAL DOOR


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.

PROCEDURE 2



Tip 1

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

Unscrew cover of mainboard with a Cross-head screwdriver.

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.

CASE 2:
GLASS DOOR


PROCEDURE 1

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.

PROCEDURE 2

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

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

CHECK AND TEST 2


GO BACK TO FAULT LIST RELIABILITY