Phaser 6121MFP Service Manual 5-23
Print-Quality Troubleshooting
Colored Spots
Random colored spots on copies.
Initial Actions
Perform the initial actions listed on page 5-5.
Troubleshooting Reference Table
Applicable Parts Example Print
■ Imaging Unit, PL4.0.13
■ Transfer Roller, PL7.1.10
■ Toner Cartridge (see Consumables
Parts List)
■ Fuser, PL11.0.18
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Print Test Pattern 3
(page 5-7).
Is the error present in only
one color?
Go to step 3. Go to step 2.
2 Inspect the Imaging Unit.
Are there scratches or
lines on the photo
conductor surface?
Replace the Imaging
Unit (page 8-6). If
the problem persists,
go to step 3.
Go to step 3.
3 Is the Transfer Roller
damaged?
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.
Is the Fuser Roller dirty or
scratched?
Replace the Fuser
(page 8-9). If the
problem persists, go
to step 6.
Go to step 6.
6 Has the problem been
eliminated?
Complete. Replace the toner
cartridge (page 8-20).
White Portion is Colored
Chrysanthemum x morifolium
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