Canon LBP5300 User Manual page 404

The overall print result is dark.
Cause 1
Remedy
Cause 2
Remedy
The print is uneven.
Cause 1
Remedy
Cause 2
Remedy
Cause 3
Remedy
Front or back of the printed paper has smudge marks.
Cause
Remedy
Smudge marks of spattering toner appear around the text or patterns.
Cause 1
Remedy
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The setting for [Toner Density] is not appropriate.
Drag the [Toner Density] slider in the printer driver toward [Light].
In order to specify the setting for [Toner Density], display the [Custom Settings]
dialog box by clicking [Settings] in the [Quality] sheet.
The printer is exposed to direct sunlight or strong light.
Move the printer to a place where it will not be exposed to direct sunlight or
strong light. Alternatively, move the strong light source away from the printer.
Paper is too moist or too dry.
Replace the paper with appropriate one and print again. (See "Paper
Requirements," on p. 3-2)
Thin transparencies were printed.
Set [Special Print Mode] to [Special Settings 10] in the printer driver. If this
solves the problem, set [Special Print Mode] to [Off].
In order to specify the setting for [Special Print Mode], display the [Advanced
Settings] dialog box by clicking [Finishing Details] in the [Finishing] sheet, and
then clicking [Advanced Settings] in the [Finishing Details] dialog box.
The toner cartridge has run out of toner, has deteriorated, or is damaged.
Display the [Consumables/Counters] dialog box, then replace the toner
cartridge that is almost empty with a new toner cartridge. (See "Replacing Toner
Cartridges," on p. 6-2)
The fixing roller is dirty.
Clean the fixing roller. (See "Cleaning the Fixing Roller," on p. 6-25)
Paper is inappropriate.
Replace the paper with one that can be used and print again. (See "Paper
Requirements," on p. 3-2)
Print Quality Problems
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