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 see what is
status of display board.

DIAGNOSIS 4


PROCEDURE 3


Step 1

Unscrew cover of
mainboard with a Crosshead
screwdriver.

Step 2

Disconnect terminals.

Step 3

Unscrew the mainboard.

Step 4

Unfasten and remove
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 Crosshead
screwdriver.

Step 2

Disconnect terminals.

Step 3

Unscrew the mainboard.

Step 4

Unfasten and remove 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


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