White blotches or faded gray areas and temperature or humidity is high or low.

Reason: Difficult environment.

Solution: Check toner. If okay, adjust settings in Maintenance Menu (See Chapter 3).

Faded print after installation.

Reason: Toner cartridge is not correctly installed.

Solution: Install toner cartridge correctly.

Print is smeared or blotched.

Reason: Dirty or defective fuser assembly or other hardware problem.

Solutions:(1) Generate Drum Cleaning page.

(2) Contact your service representative.

Printed page is light or blurred.

Reason: Toner is low.

Solution: Replace toner cartridge.

Reason: Paper used is not designed for laser printers.

Solution: Switch to a recommended paper.

Reason: LED array is dirty.

Solution: Clean LED array.

Bold characters and dark lines are smeared.

Reason: Toner is low.

Solution: Replace toner cartridge.

Print is darker than usual.

Reason: Darkness setting is too high.

Solution: Change Darkness setting in Menu.

Pages curl excessively

Reason: Printing on wrong side of paper.

Solutions:(1) Turn paper over in tray.

(2)When installing paper, make a note of the print side arrow on the paper package, then install the paper “print side down” in the paper tray.

Reason: Moisture in paper. Improper storage.

Solution: Avoid storing paper in areas of excessive temperature changes and humidity.

Reason: High humidity.

Solution: Recommended operating humidity is 20-80%.

Chapter 9: Problem Solving

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ALFA 20DX manual Faded print after installation, Print is smeared or blotched, Printed page is light or blurred