17-Gradation Test Print (Pgtype=04) - Canon CLC5000 Service Manual

CHAPTER 5 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS

3.3.4 17-Gradation Test Print (PGTYPE=04)

Use the 17-gradation test print to check gradation, fogging, white lines, uneven density
between left and right, and balance between colors.
a. Gradation
If the gradation of density is not as shown in F05-303-03, suspect a fault in the develop-
ing assembly or the laser system.
b. Fogging
If fogging is over the section of 00 activation in F05-303-03, suspect a fault in the devel-
oping system or the photosensitive drum; or, the laser may not be adjusted correctly.
c. White Lines
If white lines are noted on the image, suspect a fault in the developing assembly.
d. Balance between Colors (3-color copying)
Select 3-color mode to generate a test print to check the gray balance at each density.
Use Service mode 'TEST>PG>COLOR-C/M/Y/K' to make a mono or 3-
color selection.
Memo
5-74
F05-303-03
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON CLC5000 REV.0 JAN. 2001