8.2 RELIABILITY FAULTS:

WRONG ICONS,  NO ICONS  ON DISPLAY

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


CHECK AND TEST 2

Step 1

Unscrew cover of
mainboard with a
cross-head screwdriver.

Step 2

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

Step 3

Unscrew hinge cover.

Step 4

Check if terminal in hinge
cover is inserted to final
position.
If not, reinsert it to final
position.

DIAGNOSIS 2


CHECK AND TEST 3

Step 1

Check if wire orders in
PCB area and hinge
cover area are correct or
not.

Picture on right shows correct wire order.

DIAGNOSIS 3


PROCEDURE 1


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.

PROCEDURE 2


CASE 1:
METAL DOOR


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.



CASE 2:
GLASS DOOR


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.

CHECK AND TEST 4

Step 1

Check if connection and wire order in display area is correct or not.

DIAGNOSIS 4


CHECK AND TEST 5

Step 1

Set multimeter to
resistance gear.

Step 2

Check wire connection
from PCB area to hinge
cover area.

Step 3

Check wire connection
from hinge cover area to
display area.

DIAGNOSIS 5


PROCEDURE 3


Step 1

Unscrew hinge cover

Step 2

Remove the cover.

Step 3

Disconnect the terminals.

Step 4

Unscrew 3 bolts and
remove the top hinge.

Step 5

Remove the door.

PROCEDURE 4


Tip 1

Make sure gasket is
attached well.

Tip 2

Make sure gap between
fridge door and freezer
door is even.

CHECK AND TEST 6


CHECK AND TEST 7


PROCEDURE 5


Step 1

Unscrew cover of
mainboard with a
Cross-head screwdriver

Step 2

Disconnect terminals.

Step 3

Prize off earthing wires.

Step 4

Unscrew the mainboard.

Step 5

Prize off the buckles to
remove mainboard.

PROCEDURE 6


CHECK AND TEST 8


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