Canon image runner 2535 Betriebsanweisung PDF herunterladen (Seite 171)

Identifying and Isolating Problems

6-4

Troubleshooting

Black streaks appear on prints.

Cause The feeder (scanning area/rollers), fixing unit, or drum is dirty.

Remedy 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.)

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 The machine’s transfer output is not appropriate for the paper used.

Remedy 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.)

Cause 2 The machine’s print speed is too high for the paper used.

Remedy 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.)

Dots, lines, or stains appear on prints.

Cause 1 The machine’s platen glass/cover is dirty.

Remedy Clean the platen glass and cover. (See “Platen Glass and Cover,” on p. 5-30.)

Cause 2 The feeder scanning area is dirty.

Remedy 1 Clean the feeder scanning area. (See “Feeder Scanning Area and Rollers,” on

p. 5-31.)

Remedy 2 Use the Auto Adjustment for Dirty Feeder mode. This mode prevents dirt and

grime in the feeder from appearing on your copies and prints. (See “Feeder

Smudge Adjustment,” on p. 6-58.)

Images are obliquely printed.

Cause The original or paper placed is not aligned to the appropriate guides or edges.

Remedy Make sure that the original and paper are placed properly.

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Canon image runner 2535 Betriebsanweisung Seite 171