PROCEDURE 1



Step 1

Insert slotted screw driver into edge of switch and press the buckle on right side. 

Step 2

Prize buckle from left side. 

Step 3

Lever switch out of buckle. 

CHECK AND TEST 1

Step 4

Check the connection of switch.

Use multimeter to measure the resistance value when switch button is in a free status. 

Step 5

Measure the resistance value again when switch button is pressed down. 

DIAGNOSIS 1


CHECK AND TEST 2



DIAGNOSIS 2


PROCEDURE 2


Step 1

Unscrew the cover of
mainboard.

Step 2

Remove the mainboard
box.

Step 3

Separate the mainboard
box.

Step 4

Unsecrew and remove
PCB from the box.

Step 5

Prize off the buckle and
disconnect the terminal.

PROCEDURE 3



PROCEDURE 4



Step 1

Lever off screw cover.

Step 2

Unscrew.

Step 3

Push the top cover
forward.

Step 4

Take away the top cover.

Step 5

Disconnect the terminal
of display PCB.

Step 6

Unscrew and remove the
display PCB.

PROCEDURE 5


CHECK AND TEST 3


DIAGNOSIS 2


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