Action Yes No
Step 4
a Open the rear door and the left cover. Make sure the sensor (HPU rear
door interlock) is properly aligned and seated.
b Reseat the sensor cable J4 on the HPU controller board. Reseat the
same cable on its sensor end.
Does the error remain?
Replace the sensor
(HPU rear door
interlock). See
“Sensor
(HPU rear door
interlock) removal” on
page 878.
If the error persists,
then go to step 5.
The problem is solved.
Step 5
a Reseat all cables on the HPU controller board.
b Reseat the cables J27, J19, and J13 on the stapler controller board.
Does the error remain?
Replace the finisher
option. See
“Staple,
hole punch finisher
option removal” on
page 840.
If the error persists,
then go to step 6.
The problem is solved.
Step 6
Open the left cover, reseat all connectors on the stapler controller board
and then POR the machine.
Does the error remain?
Replace the stapler
controller board. See
“Stapler controller
board removal” on
page 851.
If the error persists,
then replace the
finisher option. See
“Staple, hole punch
finisher option
removal” on page
840.
The problem is solved.
7463
Diagnostic information
330
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