Grid Test Print (Pg>Type=6) - Canon CLC 1120 Service Manual

7. Grid Test Print (PG>TYPE=6)
Use a grid test print to check color displacement, angles, straight lines.
a. Color Displacement
If color displacement is noted, suspect a fault on the transfer drum sheet.
Even if you notice color displacement on a test print, you may not find it on a regular copy
because of black text processing. The copier is normal if regular copies do not show color
displacement. Use test prints if regular copies show color displacement, as when finding out
the position of displacement and or when identifying the color.
b. Angles and Straight Lines
If faults are noted for right angles and straight lines, suspect displacement of the laser beam and
a fault in the beam detection mechanism.
Caution:
1. You can generate printouts for each developed color using COPIER>TEST>PG of service
mode and selecting the following: COLOR-Y, COLOR-M, COLOR-C, COLOR-K.
2. To change the density of test prints, use TEST>PG>DENS-Y, M, C, K of service mode.
COPYRIGHT © 1999 CANON INC.
Figure 13-308 COLOR-M Set to '1'
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
13-63