5-22 Phaser 6121MFP Service Manual
Print-Quality Troubleshooting
2 Inspect the Imaging Unit.
Is the transfer belt dirty
with fingerprints or oil?
Wipe the surface
clean with a soft
cloth. If the problem
persists, go to step 3.
Go to step 3.
3 Is the Transfer Roller
damaged or dirty?
Replace the roller
(page 8-56). If the
problem persists, go
to step 4.
Go to step 4.
4 Check the paper path.
Is there a foreign object
or obstruction in the
path?
Remove the object
and reprint the test
sheet. If the problem
persists, go to step 5.
Go to step 5.
5 Inspect the Fuser.
Are the green release
levers in the closed
position?
Close the green
release levers and go
to step 6.
Go to step 6.
6 Has the problem been
eliminated?
Complete. Replace the toner
cartridge (page 8-20).
If the problem
persists, replace the
Laser Unit
(page 8-50).
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No
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