8.2 RELIABILITY FAULTS:
WRONG OR NO ICON 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 order in
PCB area and hinge
cover area are correct or
not.
Picture on right shows
the correct wire order.
DIAGNOSIS 3
PROCEDURE 1
Step 1
Step 2
Peel off the sleeves.
Step 3
Check to ensure proper
wire order and connect
them.
Step 4
Tin soldering.
Step 5
Cover connection with
electrical tape.
PROCEDURE 2
Step 1
Check whether no display is due to undetected causes.
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.
Reverse steps above
to install display
board. Pay attention to
the key points below.
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.
CHECK AND TEST 4
Step 1
Check if connection and
wire order in display area
are 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 5
Step 1
Unscrew hinge cover.
Step 2
Remove the wire cover
on door.
Step 3
Take out hinge cover.
Step 4
Disconnect door switch.
Step 5
Disconnect the terminal.
Step 6
Loosen 3 bolts.
Step 7
Remove hinge.
Step 8
Remove the door.
Reverse steps above
to install the door. Pay
attention to the key
points below.
Tip 1
1) Make sure gasket is
attached well.
2) Make sure gaps
between doors are even.
CHECK AND TEST 6
PROCEDURE 6
Step 1
Unscrew cover of
mainboard with a
cross-head screwdriver.
Step 2
Disconnect terminals.
Step 3
Prize up the buckle and
disconnect the terminal.
Step 4
Unscrew the mainboard.
Step 5
Remove the mainboard.
Reverse steps above
to install a new
mainboard.
CHECK AND TEST 7
GO BACK TO FAULT LIST RELIABILITY