Canon LBP3000 User Manual page 295

The next page is printed from halfway through the previous page.
Cause
Remedy
Nothing is printed on the paper.
Cause 1
Remedy
Cause 2
Remedy
6
The paper comes out completely black.
Cause
Remedy
Printed pages have white specks.
Cause 1
Remedy
Cause 2
Remedy
Cause 3
Remedy
6-24 Print Quality Problems
The [Line Spacing] or [Lines/Page] settings in the application are not configured
correctly.
Update the [Line Spacing] and [Lines/Page] in the application so that data fits
onto one page and print again. (See Instruction manual for the application.)
The toner cartridge was installed with the sealing tape still attached.
Remove the toner cartridge, pull away the sealing tape, and reinstall the
cartridge. (See "Replacing the Toner Cartridge," on p. 5-2)
Multiple sheets of paper are feeding at the same time.
Thoroughly align the stack of paper and load it again. (See "Printing on Plain
Paper, Heavy Paper, Label Paper, and Transparencies," on p. 2-14, "Printing on
Index Card," on p. 2-27, "Printing on Envelopes," on p. 2-34, "Printing on
Custom Paper Sizes (Non-Standard Sizes)," on p. 2-45)
The drum in the toner cartridge has deteriorated.
Replace the toner cartridge with a new one. (See "Replacing the Toner
Cartridge," on p. 5-2.)
The paper is inappropriate.
Replace the paper with one of the usable paper types and print again. (See
"Paper Requirements," on p. 2-2.)
The paper is damp because it was stored in poor conditions.
Replace the paper with new paper and print again.
The drum in the toner cartridge has deteriorated.
Replace the toner cartridge with a new one. (See "Replacing the Toner
Cartridge," on p. 5-2.)