Standards And Adjustment; Mechanical - Canon NP6317 Service Manual

II. STANDARDS AND ADJUSTMENT
A.

Mechanical

1. Leading Edge Non-Reproduced Area
There is a white strip on the bottom of the copyboard glass in the position shown in the figure
below. If bias is being applied to the grid of the primary corona while the scanner is passing over
the white strip, the leading edge of the copy will be reproduced blank. If the leading edge non-
image width is outside the standards, adjust the timing at which the grid bias goes from OFF to ON
in the service mode (C3).
The standard leading edge non-reproduced area on a DIRECT copy of the test sheet is 2.0 ±1.5
mm.
A higher setting (C3) increases the leading edge non-image width; in units of 0.25 mm.
COPYRIGHT © 1999 CANON INC.
White strip
Surface of copyboard glass
Approx. 10 mm
Figure 10-201
Figure 10-202
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
2.0 ±1.5 mm
10-3