HPU communication error jam service check
Action Yes No
Step 1
Check the lower interface cable. If damaged, then replace the lower
interface cable. See
“Staple, hole punch lower interface cable removal”
on page 861.
Remove the left cover. Reseat the cable J15 on the controller board, then
POR the machine.
Does the error remain?
Go to step 2. The problem is solved.
Step 2
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 3.
The problem is solved.
Step 3
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
212
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