Canon IR2200, IR3300, IR2800 manual Image Adjustment Basic Procedure

CHAPTER 2 IMAGE ADJUSTMENT BASIC PROCEDURE

1Making Initial Checks

Requirements:

2Checking the Scanner Side

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.

Execute 'roller clean' in user mode ('adjust/clean').

Reference:

The following will be cleaned: [1]Primary charging roller

[2]Transfer charging roller

Clean the separation static eliminator.

Is the setting of

'exposure recalibration' NO under 'adjust/clean' in user

mode the middle

setting?

YES

Set it to the middle setting.

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.

Is there a	NO
vertical line in the
image?
YES

Execute the following in service mode:

COPIER>FUNCTION>CCD>CCD-ADJ.

Make a copy in text mode.

If a line occurs only when the ADF is used,

Make a copy in text mode.

NO	Is the white
	background of the
	copy foggy?
	YES

Execute shading in service mode: FUNCTION>CCD>CCD-ADJ.

Is the image foggy?	YES
NO
Is the density	YES
of the copy image
normal?
NO

Go to

5 Checking the Printer Side (3/3).

End.

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.

NO
Is the copy	YES
density normal?

Make a copy in AE mode.

YES

Is '5' indicated for	NO
ADJUST>DENS>DENS-ADJ		Set it to '5'.
in user mode?
YES
Does the five
items on the right in	NO	Enter the settings
service mode match the settings		indicated on the
indicated on the
		service label.
service label?

Is there a	NO
vertical line in
the image?
YES

Change the shading position. (Note 1)

Is there a	NO
vertical line in
the image?

		Is there a	NO
		vertical line in
		the image?
		YES
	Clean the original reading
	face of the ADF.
YES		Is there a	NO
		vertical line in

the image?

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.

Execute the following in service mode:

Is the copy

image density normal?

NO

Set '5' to the following in service mode:

COPIER>ADJUST>DENS>DENS-ADJ.

Output Condition			YES
	F value=5			In service mode COPIER>ADJUST,
		Using the NA3 Test Chart, make 2 copies
				1. AE>AE-TBL
		in the following:
				2. DEVELOP>DE-DC
		[1] Text mode
				3. DEVELOP>DE-OFST
		Reference: At optimum density, the copy
				4. HV-PRI>P-DC
		image should barely show
		gray scale No. 0.		5. HV-PRI>OFST1-DC

Generate 2 test prints each of the following in

COPIER>TEST>PG:

[1]TYPE4 (blank)

[2]TYPE5 (halftone)

[3]TYPE6 (solid black)

					If the test print has a fault,
		If the copy image has a fault,
Go to			Go to
2	Checking the Scanner Side.		3	Checking the Printer Side (1/3).

YES

Clean the copyboard glass. (white plate position)

Is there a	NO
vertical line in
the image?
YES
Change the shading position.

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.

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.

Is the copy	YES
image density
normal?
NO

Go to

COPIER>FUNCTION>DENS.

1.WHITE-ME

2.PD-DENS

3.PD-ME

NO	Is the copy
	image density in text
	mode normal?
	YES
	End.

Is the setting of the

NO following in service mode

485 µA or higher: DISPLAY>HV-STS>

PRIMARY?

YES

Replace the drum unit;

then, execute the following in service mode: COPIER> FUNCTION>DPC>D-GAMMA.

Is the setting of

NO the following in service mode

485 µA or higher: DISPLAY>HV-STS>

PRIMARY?

YES

Replace the composite power supply PCB.

3Checking the Printer Side (1/3).

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