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4447-20x
Step
4
Check the pressure arm and pressure arm roll for
any damage.
Is the pressure arm assembly free from any
damage?
Check the pick tires for wear, contamination, and
5
damage.
Are the pick tires dirty, damaged, or worn?
6
Remove the duplex unit. See
removal" on page
flag for any mechanical damage. Check the J34
cable and connector on the system board for proper
connection. Reseat the J34 cable.
Is the staging sensor flag free from any
damage?
7
Check the J26 connector for proper connection.
Reseat the J26 cable. Check the EOF sensor for
any mechanical damage.
Is the EOF sensor free from any damage?
8
Check the J35 connector on the system board for
proper connection and any damage. Reseat the
J35 cable.
Is the J35 connector free from any damage?
9
Check the feed assist rollers for wear and
contamination. Check the paper for skid marks,
which could be possible roller slips during picking.
Are the feed assist rollers dirty or worn?
10
Check if the feed rollers will initialize during POST.
Do the feed rollers initialize during POST?
11
Replace the pick tires. See
on page
Does the problem remain?
12
Replace the duplex unit. See
removal" on page
Does the problem remain?
13
Replace the input tray. See
on page
Does the problem remain?
Replace the system board. See
14
removal" on page
Does the problem remain?
15
Replace the print engine assembly. See
engine assembly removal" on page
Does the problem remain?
2-87
Service Manual
Check
"Duplex unit
4-11. Check the staging sensor
"Pick tires removal"
4-13.
"Duplex unit
4-11.
"Input tray removal"
4-8.
"System board
4-32.
Yes
Go to step 5.
Replace the
pick tires. See
"Pick tires
removal" on
page
4-13.
Go to step 7.
Go to step 8.
Go to step 9.
Go to step 10.
Go to step 11.
Go to step 12.
Go to step 13.
Go to step 14.
Go to step 15.
"Print
Replace the
4-84.
printer.
No
Go to step 15.
Go to step 7.
Go to step 15.
Go to step 15.
Go to step 14.
Do any of the
following:
• Clean the rollers.
• Go to step 15.
Go to step 15.
Problem resolved
Problem resolved
Problem resolved
Problem resolved
Problem resolved
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