CHECK AND TEST 1
Step 1
Unscrew cover of mainboard with aCross-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
In PCB area, use multimeterto measure resistance value.
DIAGNOSIS 1
CHECK AND TEST 2
Step 1
Check if wire order in PCB area and hinge cover area are correct or not. Right picture shows the correct wire order.
DIAGNOSIS 2
PROCEDURE 1
FOR WIRE
RECONNECTION
Step 1
Cut wire off.
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
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.
Tips for installing display.
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 2
Check wire connection from PCB area to hinge cover area.
Step 3
Check wire connection
from hinge cover area to
display area.
DIAGNOSIS 4
PROCEDURES 5
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
upper door.
Reverse procedures
above to restore hinges
and doors, however,
please pay attention to
below points:
Tip 1
Make sure gasket is attached well.
CHECK AND TEST 5
PROCEDURE 6
Step 1
Unscrew cover of
mainboard with a
Cross-head screwdriver.
Step 2
Prize off the connector
buckles.
Step 3
Disconnect the
connectors
Step 4
Unscrew the mainboard. 
Step 5
Prize off the buckle to
remove mainboard. 
CHECK AND TEST 7
GO BACK TO COMPONENT LIST