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All or Some of the Keys on Console Will not Work
Possible causes:
•
Keypad connecting plug (N02) is not fit-in properly into the upper control board.
Verify the keypad connection.
•
The upper control board is not configured properly. There should be a jumper
switch on pin A (miles) and pin B (keypad). Pins Eng_Mode_Test and
Eng_Display_Test should be open.
•
Overlay is sticking or is damaged (N01). Try peeling up overlay and
repositioning it.
•
Overlay is damaged (N01). Remove overlay and press touch pad (N02) for
proper function. If buttons of touch pad work, replaced the overlay. If the
buttons of the touch pad do not work, replace the touch pad.
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