5-12 Phaser 6121MFP Service Manual
Print-Quality Troubleshooting
Foggy Background
The background image is either distorted or foggy.
Initial Actions
Perform the initial actions listed on page 5-5.
Troubleshooting Reference Table
Applicable Parts Example Print
■ Scanner Unit, PL2.0.4
■ Toner Cartridge (See consumables
parts list)
■ Imaging Unit, PL4.0.13
■ Laser Unit, PL4.0.2
Troubleshooting Procedure Table
Step Actions and Questions Yes No
1 Print Test Pattern 3 (see
page 5-7).
Does the defect occur on
the printed output?
The problem is in the
print image system.
Go to step 4.
The problem is in the
Scanner system. Go
to step 2.
2 This defect often occurs
when copying books or
other material that
prevents the ADF from
fully closing. If the ADF
does not fully close,
external light can produce
background on the copy.
Open and Close the ADF
and verify it closes
completely.
Does the defect still
occur?
Go to step 3. Complete.
Chrysanthemum x morifolium
Background Contamination
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