Action Yes No
Step 11
a Reseat the interface cable on the staple finisher controller board and
printer controller board
b Reseat the junction connector on the cable.
c Check the cable for damage, and replace if necessary. See “Staple
finisher interface cable removal” on page 245.
Does the problem remain?
Go to step 12. The problem is solved.
Step 12
a Reseat all the cables on the staple finisher controller board.
b Reset the printer.
Does the problem remain?
Go to step 13. The problem is solved.
Step 13
Replace the controller board. See
“Staple finisher controller board
removal” on page 244.
Does the problem remain?
Contact the next level
of support.
The problem is solved.
42y paper jams
42y paper jam messages
Error code Description Action
420.93 The sensor (HPT feed) did not detect the paper from
the printer.
See
“HPT feed jam service check” on page 73.
420.95 The paper remains detected at the sensor (HPT feed)
during a job.
421.93 While feeding from the HPT, skew correction did not
complete at the SHPF entrance roller.
See
“HPT feed jam service check” on page 73.
421.95 The paper remains detected at the sensor (SHPF
entrance) during a job.
See
“SHPF transport paper jam service check” on
page 86.
423.93 The sensor (SHPF top bin exit) did not detect the
paper.
See
“SHPF top bin exit jam service check” on
page 89.
423.95 The paper remains detected at the sensor (SHPF top
bin exit) during a job.
424.93 The sensor (SHPF compiler feed) did not detect the
paper.
See
“SHPF compiler feed jam service check” on
page 91.
424.95 The paper remains detected at the sensor (booklet
gate) during a job.
See
“SHPF transport paper jam service check” on
page 86.
425.93 The sensor (booklet gate) did not detect the paper. See
“SHPF booklet gate jam service check” on
page 94.
4021, 7421
Diagnostic information
63
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