COPYRIGHT
©
2001 CANON INC. 2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001
2-1 T

CHAPTER 2 IMAGE ADJUSTMENT BASIC PROCEDURE

Execute the following in service mode:
COPIER>FUNCTION>CCD>CCD-ADJ.
Check/clean the following:
[1] Mirrors [2] Lens
[3]
Standard white plate
[4]
Copyboard glass
[5] Scanning lamp [6]
Reflecting plate
Make a copy in text mode.
YES
Is there a
vertical line in the
image?
YES
YES
YES
NO
NO
NO
Make a copy in text mode.
Change the shading position. (Note 1)
Change the shading position.
Clean the copyboard glass.
(white plate position)
Is there a
vertical line in
the image?
Is there a
vertical line in
the image?
Is there a
vertical line in
the image?
YES
YES
YES
YES
NO
NO
NO
NO
Is the copy
image density
normal?
Execute the following in service mode:
COPIER>FUNCTION>DENS.
1. WHITE-ME
2. PD-DENS
3. PD-ME
Is the setting of the
following in service mode
485 µA or higher:
DISPLAY>HV-STS>
PRIMARY?
Is the setting of
the following in service mode
485 µA or higher:
DISPLAY>HV-STS>
PRIMARY?
Replace the drum unit;
then, execute the following in
service mode: COPIER>
FUNCTION>DPC>D-GAMMA.
Is the copy
image density in text
mode normal?
Reference:
Varying the setting of DENS-ADJ
affects the density of all following
copying modes:
• Auto
• Text
• Text/photo
• Photo (print photo/film photo)
Vary the setting in service mode:
COPIER>ADJUST>DENS>DENS-ADJ.
•
If the image is dark, decrease the setting.
•
If the image is light, increase the setting.
3 Checking the Printer Side (1/3).
5 Checking the Printer Side (3/3).
Replace the composite
power supply PCB.
End.
Set '5' to the following in service mode:
COPIER>ADJUST>DENS>DENS-ADJ.
NO
NO
NO
NO
NO
YES
YES
Execute shading in service mode:
FUNCTION>CCD>CCD-ADJ.
Vary the setting in service mode:
COPIER>ADJUST>AE-AE-TBL.
• If the image is dark, decrease
the setting.
• If the image is light, increase
the setting.
End.
Make a copy in AE mode.
YES
YES
YES
Is the white
background of the
copy foggy?
Is the copy
density normal?
Vary the setting in service mode:
COPIER>ADJUST>DENS>DENS-ADJ.
• If the image is dark, decrease the setting.
• If the image is light, increase the setting.
Is the copy
image density
normal?
Is the density
of the copy image
normal?
Is the image foggy?
NO
NO
NO
Is there a
vertical line in
the image?
YES
Make a copy in text mode.
Is there a
vertical line in
the image?
YES
If a line occurs only
when the ADF is used,
Clean the original reading
face of the ADF.
Note 1: In units of 8s, increase or decrease
the setting of FUNCTION>CCD
>SHDG-POS. Then, execute
FUNCTION>CCD>SH-PS-ST to see
that 'OK!' is indicated.
Output Condition
F value=5
If the copy image has a fault, If the test print has a fault,
1. Use paper fresh out of package.
(Moist paper will not allow correct
evaluation of images.)
2. Use paper with the highest degree of
"whiteness," of all available papers.
3. Use A3 paper (11x17), if possible.
Requirements:
Execute 'roller clean' in user mode
('adjust/clean').
The following will be cleaned:
[1]Primary charging roller
[2]Transfer charging roller
Reference:
Using the NA3 Test Chart, make 2 copies
in the following:
[1] Text mode
Reference: At optimum density, the copy
image should barely show
gray scale No. 0.
Generate 2 test prints each of the following in
COPIER>TEST>PG:
[1] TYPE4 (blank)
[2] TYPE5 (halftone)
[3] TYPE6 (solid black)
Clean the separation static eliminator.
Does the five
items on the right in
service mode match the settings
indicated on the
service label?
Enter the settings
indicated on the
service label.
Set it to '5'.
Set it to the
middle setting.
Is the setting of
'exposure recalibration'
under 'adjust/clean' in user
mode the middle
setting?
Is '5' indicated for
ADJUST>DENS>DENS-ADJ
in user mode?
2 Checking the Scanner Side. 3 Checking the Printer Side (1/3).
NO
NO
YES
NO
YES
YES
In service mode COPIER>ADJUST,
1. AE>AE-TBL
2. DEVELOP>DE-DC
3. DEVELOP>DE-OFST
4. HV-PRI>P-DC
5. HV-PRI>OFST1-DC
1

Making Initial Checks

2Checking the Scanner Side
Go to Go to
Go to
Go to