CHECK AND TEST 1
Step 1
Unscrew cover of mainboard with a Cross-head screwdriver.
Step 2
Confirm ambient temperature is lower than 13 degrees.
Step 3
After measuring the output for Temperature- compensation heater when ambient temperature is lower than 13 degrees.
DIAGNOSIS 1
PROCEDURE 1
Step 1
Prize off the buckle to take out wires.
Step 2
Unscrew the mainboard.
Step 3
Disconnect terminals.
Step 4
Pull out the buckle to remove mainboard.
Reverse above steps to install a new board.
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