Canon GP405 Service Manual page 443

b. Executing WHITE-ME
1) Place five sheets of standard white paper, and close the feeder or the copyboard cover.
• Be sure that the paper is A4 or larger and placed vertically.
2) Start service mode, and select COPIER>FUNCTION-DNS>WHITE-ME.
3) Press the Copy Start key.
• The scanner moves forward and reads the white paper.
c. Executing PD-DENS
1) Select COPIER>FUNCTION>DENS>PD-DENS, and press the OK key.
• A 15-graduation patter will be generated. (The patches are black.)
d. Executing PD-ME
1) Remove the white paper from the copyboard, and place the PD-DENS output on the
copyboard.
• Place the printed side down (for reading the pattern).
• Place the white side as the leading edge and the black side toward the center.
• Be sure to place originals against the marking V on the copyboard glass.
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 14 TROUBLESHOOTING
White paper
Figure 14-230
In practice, place
it so that the printed
side is down.
PD-DENS output
Figure 14-231
14-25