COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)1. Full-color 16 gradations (YMCK)Use the full-color 16-gradation (YMCK) test print to check the gray balance, gradationof each color (YMCK), and fogging.a. Gray BalanceCheck to find out if the gray scale is even for all colors.b. GradationCheck the gradation and the difference in density of each color (YMCK).c. FoggingIf the white area is foggy, the photosensitive drum inside the drum cartridge or thelaser system of the printer unit is likely to be faulty.Figure 10-701CHAPTER 10 TROUBLESHOOTING10-94Note:· The page consists of patches of Bk, Y, RGB, M, and C.· Cassette 2 is used as the source of paper.· The page consists of a single sheet.· Regardless of the size of paper, the patches are printed at the center.Download free service manual at http://printer1.blogspot.com
