CHAPTER 13 TROUBLESHOOTING
7 The copy is foggy (vertical).
8 The copy has black lines (feeding direction, fuzzy, thick).
CauseStepChecksYes/NoAction
Scanner (dirt)1Does the problem occur in copy imagesYES The cause is between
only?the scanner and the
CCD; check the
following:
1. scanning lamp for
dirt and end of life.
2. reflecting plate,
mirror, lens, and
standard white plate
for dirt.
Potential control2Set the setting of the following in serviceYES The cause is in the
systemmode to '0', and turn off potential control:potential control
COPIER>OPTION>BODY>PC-CNT. Issystem. Make checks
the problem corrected?as in II. "Standards and
Adjustments" in
Chapter 13.
Primary3Clean the primary charging wire, gridYES End.
chargingwire, an shielding plate. Is the problem
assemblycorrected?
Is the light of the pre-exposure lamp even
during copying operation?
Pre-exposure 4Clean the pre-exposure lamp. Is theYES End.
lampproblem corrected?
Fixing assembly5Using the door switch actuator, press theNOThe cause is after the
Developing rolls Copy Start key while keeping the frontfixing system. Check
cover open. Turn off the power switchthe fixing assembly
while copy paper is in the feeding upper and lower rolls
assembly, and check the image. Is thefor dirt.
copy image normal?
Developing6Is the toner on the developing cylinder inNOCheck the edge of the
assemblyan even coating?blade of the developing
assembly.
Drum cleanerYES 1. Remove the drum
unitcleaner blade, and
check the edge.
2. Check the drum
cleaner unit.
COPYRIGHT ? 1999 CANON INC.CANON GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)13-71 |