COPYRIGHT © 1999 CANON INC. CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)4. YMCK vertical stripeUse the vertical test print to check the dark area density of each color, balancebetween colors, and white lines caused during development.a. Dark Area Density of Each Color and Balance between ColorsThe density must not be appreciably low (light image).If the density of one color is low (light image), the light-color toner cartridge is likelyto be faulty.If the density of all colors is low (light image), primary transfer/secondary transfer islikely to be faulty.b. White Lines Caused during DevelopmentIf white lines are found in the cyan area of the copy, the cyan toner cartridge islikely to be faulty.c. Uneven Density between Left and RightIf the right/left density is uneven for all colors, the drum cartridge, secondarypre-transfer charging assembly, or secondary transfer belt assembly of the printerunit is likely to be faulty.Figure 10-704CHAPTER 10 TROUBLESHOOTING10-97Note:· The page consists of halftone strips of C, M, Y, and Bk.· Cassette 2 is used as the source of paper.· The page consists of a single sheet.· Strips of C, M, Y, and Bk are printed within the entire printable area (guaranteed area).Download free service manual at http://printer1.blogspot.com
