Canon Laser Shot LBP5970 User Manual page 456

IMPORTANT
Adjustment of the toner density affects all the color print jobs. Normally, use the printer
with the toner density left to the default value (9).
Cause 2 Any of the four color toner cartridges is running out, or the drum cartridge
has been deteriorated.
Remedy 1 Replace the toner cartridge of the color for which <PREP. "color" TNR> or
<CHG."color" TNR> is indicated with a new one. (See "Replacing Toner
Cartridges," on p. 6-2)
Remedy 2 See "When Any Print Defect Appears" (p. 7-69) and solve the problem.
Data is not printed in correct colors or colored text appears to be blurred due to a
phenomenon of "Out-of-Register Colors".
Cause 1 The drum cartridges are not installed properly.
Remedy Check if the drum cartridges are installed properly. (See "Replacing Drum
Cartridges," on p. 6-15)
Cause 2 Any of the four color toner cartridges is running out, or the drum cartridge
has been deteriorated.
Remedy 1 Replace the toner cartridge of the color for which <PREP. "color" TNR> or
<CHG."color" TNR> is indicated with a new one. (See "Replacing Toner
Cartridges," on p. 6-2)
Remedy 2 See "When Any Print Defect Appears" (p. 7-69) and solve the problem.
Cause 3 Appropriate paper is not being used.
Remedy Replace the paper with one that can be used and print again. (See "Paper
Requirements," on p. 3-2)
The colors of thin lines or filled-in patterns are different from the specified colors, or
do not appear at all.
Cause 1 Some colors cannot be reproduced due to the combination of colors or
patterns.
Remedy 1 Adjust the colors in the application and print again.
Remedy 2 Change the patterns in the application and print again.
Cause 2 The color may appear different depending on the fill-pattern.
Remedy 1 Readjust to a darker color and print again.
Remedy 2 Reload paper to change the feeding direction, then print again.
When You Cannot Obtain Appropriate Printout Results
7
7-61