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4-3 Electrical Malfunction
Connect the display board to the
accessorial power board properly.
Connect the display board
Yes
to a test accessorial power
board. Restart the unit,
does the symptom
continue?
No
The accessorial power board is
damaged. Replace the board.
Replace the accessorial power
board and the display board.
The LED does not come on when unit is plugged in
No
Check the connection.
Connect a test display board to
Yes
the accessorial power board.
Restart the unit, does the
symptom continue?
The display board is damaged.
Replace the display board.
Perform the operation again and check if
it is working properly.
- 21 -
: Check to see if plug is secured tightly in
outlet and that outlet is working.
Check if the accessorial power board and
the display board are connected properly?
Yes
: Test board, means a normal
display board or a normal
accessorial power board.
No
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