Action Yes No
Step 5
Check the ADF separator roller for improper installation, wear, and
damage.
Is the ADF roller properly installed and free of wear and damage?
Go to step 7. Go to step 6.
Step 6
Reinstall or replace the separator roller.
Does the problem remain?
Go to step 7. The problem is
solved.
Step 7
Check the ADF rollers for improper installation, wear, and damage.
Are the ADF rollers properly installed and free of wear and
damage?
Contact the next
level of support.
Go to step 8.
Step 8
Reinstall or replace the ADF roller. See
“ADF roller removal” on
page 306.
Does the problem remain?
Contact the next
level of support.
The problem is
solved.
4yy paper jams
420–430 paper jam messages
Error code Description Action
420.11 Paper remains detected at the sensor (stapler
pass‑through) after the printer is turned on.
See
“Finisher jam service check” on page 114.
420.12 Paper was detected earlier than expected at the
sensor (stapler pass‑through).
420.13 Paper was detected later than expected or was
never detected at the sensor (stapler
pass‑through).
420.15 Paper never cleared the sensor (stapler
pass‑through).
421.13 The staple finisher left tamper failed to reach its
home position.
See
“Stapler left tamper jam service check” on
page 116.
421.15 The staple finisher left tamper failed to leave its
home position.
422.13 The staple finisher right tamper failed to reach its
home position.
See
“Stapler right tamper jam service check”
on page 118.
422.15 The staple finisher right tamper failed to leave its
home position.
7018
Diagnostics and troubleshooting
113
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