Canon ImageRunner 2545i Reference Manual page 171

Black streaks appear on prints.
Cause
Remedy
NOTE
• To solve this problem, always clean the machine from the feeder, followed by the fixing
unit, and then the drum.
• If the problem persists even after cleaning all of the above parts, contact your local
authorized Canon dealer.
Print density is irregular.
Cause 1
Remedy
Cause 2
6
Remedy
Dots, lines, or stains appear on prints.
Cause 1
Remedy
Cause 2
Remedy 1 Clean the feeder scanning area. (See "Feeder Scanning Area and Rollers," on
Remedy 2 Use the Auto Adjustment for Dirty Feeder mode. This mode prevents dirt and
Images are obliquely printed.
Cause
Remedy
6-4
Identifying and Isolating Problems
The feeder (scanning area/rollers), fixing unit, or drum is dirty.
Clean the feeder scanning area and rollers. (See "Feeder Scanning Area and
Rollers," on p. 5-31, and "Automatic Feeder Cleaning," on p. 5-34.) If the
problem persists, clean the fixing unit. (See "Fixing Unit Cleaning," on p. 5-38.) If
the problem persists, clean the drum. (See "Drum Cleaning," on p. 5-37.)
The machine's transfer output is not appropriate for the paper used.
Use Special Mode M. This mode enables you to select the machine's transfer
output from three levels. (See "Improving Print Quality and Density," on p. 6-49.)
The machine's print speed is too high for the paper used.
Use Special Mode G. This mode improves print quality by reducing the
machine's print speed, thus allowing more time for the toner to become fixed on
the paper. (See "Adjusting Print Speed for Higher Print Quality," on p. 6-55.)
The machine's platen glass/cover is dirty.
Clean the platen glass and cover. (See "Platen Glass and Cover," on p. 5-30.)
The feeder scanning area is dirty.
p. 5-31.)
grime in the feeder from appearing on your copies and prints. (See "Feeder
Smudge Adjustment," on p. 6-58.)
The original or paper placed is not aligned to the appropriate guides or edges.
Make sure that the original and paper are placed properly.