Solid White (Type=4); Halftone (Type=5/6/11/12/13/14) - Canon imageRUNNER ADVANCE 8105 Series Service Manual

■

Solid white (TYPE=4)

Check item Check method
Check whether foggy image appears in
Fogging
the blank area.
■

Halftone (TYPE=5/6/11/12/13/14)

6
Troubleshooting > Test Print > How to View the Test Print > Halftone (TYPE=5/6/11/12/13/14)
F-6-3 F-6-3
Assumed cause
Drum failure, laser exposure system failure
or developing system failure is considered.
F-6-4 F-6-4
6
Troubleshooting > Test Print > How to View the Test Print > Halftone (TYPE=5/6/11/12/13/14)
MEMO:
•
When outputting a halftone test print, be sure to use PG TYPE:6 except in the following
cases.
1. When checking the image of side registration adjustment, use PG TYPE:11.
2. When the setting value of the following service mode is "2"
(TBIC is used for both the photo part and the text part), use PG TYPE:5.
COPIER > OPTION > USER > PH-D-SL2
• When changing the density of the test print, use the following service mode to change the
density: TEST>PG>K.
Check item Check method
Check the evenness of halftone
Transfer failure density. Check whether uneven image
or foggy image appears.
Check whether black lines appear on
Black line
the image.
Check whether white lines appear on
White line
the image.
Check whether lines appear on the
Uneven pitch image in the horizontal scanning
T-6-4 T-6-4
direction.
Uneven
Check the density difference between
density
the front and rear sides.
(rear/front)
Side
Check the left margin.
registration
Check whether horizontal lines appear
Shock
on the image.
6-4
Assumed cause
Transfer system failure or Pre-transfer
Charging Assembly failure is considered.
Laser light path failure, grid failure,
developing system failure, cleaning (drum,
ETB) failure or Pre-transfer Charging
Assembly failure is considered.
Primary Charging Wire failure or developing
system failure is considered.
Drum failure, developing system failure,
laser exposure system failure or drive-
related failure is considered.
Primary Charging Assembly failure, drum
failure or developing system failure is
considered.
Floor at the installation site is extremely
distorted, or the feed system failure is
considered.
ETB and rollers' feed system failure or
laser exposure system failure (drum, Laser
Scanner) is considered.
T-6-5 T-6-5
6-4