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[9] Use Steps 2 and 3 to check the KEYPAD operation again.
[10] Use the following table to help you select the correct repair procedure.
Malfunction Description
The NUMERIC KEYPAD is not illuminated.
The COPIES and FORMAT DISPLAYS are not illuminated.
The MESSAGE DISPLAY is not illuminated.
The MESSAGE DISPLAY is not illuminated or the
illumination is not uniform.
The NUMERIC KEYPAD is illuminated.
The COPIES and FORMAT DISPLAYS are illuminated.
The KEYPAD operation or response is erratic.
The KEYPAD illumination is incorrect or erratic.
XP3210-006 – 18JUL97
Probable Cause/
Corrective Action
The DC-DC
CONVERTER might
have failed. Check and
replace.
The MESSAGE
DISPLAY BOARD
might have failed. Check
and replace.
The KEYPAD
OVERLAY/BOARD
AY might have failed.
Check and replace.
Procedure Reference
Replacing the DC-DC
CONVERTER, page 6.
Replacing the
MESSAGE DISPLAY
BOARD, page 11.
Replacing the
KEYPAD/OVERLAY
BOARD AY, page 13.
5
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