Actions Yes No
Step 1
Make sure that the paper type and weight are supported.
Does the problem remain?
Go to step 2. The problem is solved.
Step 2
Check the exit roller for wear, damage, or contamination, and replace if
necessary.
Does the problem remain?
Go to step 3. The problem is solved.
Step 3
a Check the exit belt for proper tension, and adjust if necessary.
b Check the exit gear and belt for wear or damage, and replace if
necessary.
Does the problem remain?
Go to step 4. The problem is solved.
Step 4
Check the transfer roller for wear, damage, or contamination, and replace
if necessary. See
“Transfer roller removal” on page 284.
Does the problem remain?
Go to step 5. The problem is solved.
Step 5
a Make sure that the registration unit is properly installed.
b Make sure that the unit is clear of obstructions.
c Check the unit for damage, and replace if necessary. See “Registration
unit assembly removal” on page 314.
Does the problem remain?
Go to step 6. The problem is solved.
Step 6
Check the sensor (fusing speed) for damage.
Is it free of damage?
Go to step 7. Go to step 9.
Step 7
Enter the Diagnostics menu, and then navigate to:
SENSOR TESTS > PRINTER SENSOR TESTS > Fusing speed
Does the sensor status change while toggling the sensor?
Go to step 8. Go to step 10.
Step 8
a Reseat the fusing speed sensor cable.
b Check the cable for damage, and replace if necessary.
Does the problem remain?
Go to step 9. The problem is solved.
7421
Diagnostic information
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