CHECK AND TEST 1


Step 1

Unscrew cover of mainboard with a Cross-head screwdriver. 

Step 2

Check to see whether
wires in mainboard area
are broken.

DIAGNOSIS 1


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. 


CHECK AND TEST 2

Step 1

Install the mainboard cover.

Step 2

Perform current leakage
test.
Put one detector on
earthing wire of socket,
and another detector on surface of the appliance.


DIAGNOSIS 2