Canon IR3300, IR2800, IR2200 manual Yes Displayhv-Sts

CHAPTER 2 IMAGE ADJUSTMENT BASIC PROCEDURE

3

Checking the Printer Side (1/3)

4

Checking the Printer Side (2/3)

5

Checking the Printer Side (3/3)

Is there a	NO	Is the image of TYPE6	YES	Check the image density by
vertical line in		(solid black) on test prints correct in
the image?		density and free		generating test prints (TYPE5).
		of fuzziness?
YES
		NO
Clean the following:				Is there an

Check the image density by	Go to
generating test prints (TYPE4).	2	Checking the Scanner Side.

YES

[1] Laser mirror

appreciable difference

in density between left

[2] No. 1 mirror

NO

Is the image fuzzy?

and right of the

image?

YES

YES

Is there a

NO

Clean the following:

vertical line in

the image?

Check the following,

[1] Laser mirror:

and correct any fault:

[2] No. 1 mirror

YES

[1] Feeding assembly for locking

[2] Transfer charging roller electrode

Check the surface of the

Is there ea

NO

developing sleeve by the naked eye.

vertical line in the

Is there a difference

image?

Is the image

YES

in density between left and

right of the image?

Is there a

NO

YES

density appropriate?

YES

vertical line on the

Replace the drum unit.

NO

surface of the

sleeve?

YES

Adjust the setting of the following in

NO

Are both rear and

Execute the following service mode:

service mode:

Replace the pre-exposure

front of the pre-exposure

Generate 10 test prints of the

COPIER>FUNCTION>DPC>D-GAMMA.

COPIER>ADJUST>DEVELOP>DE-DC.

lamp unit.

lamp ON?

(initialization)

• If the image is light, decrease the setting.

following in service mode:

• If the image is dark, increase the setting.

COPIER>TEST>PG.

Caution:

YES

TYPE6 (solid black)

Be sure to vary the setting in

equal amounts.

Is the setting of the

NO

Is the developing

NO

following in service mode 485 µA:

Lock it securely. If the locking

assembly securely locked

Is there a

mechanism has a fault, replace it.

YES

NO

DISPLAY>HV-STS>

in place?

line on the surface

PRIMARY?

Is the image

YES

of the sleeve?

density appropriate?

YES

YES

	NO			Generate 10 test prints (TYPE6);
Replace the composite power supply PCB.					YES	Is the coating of toner
				then, if the coating of toner on
	Replace the developing assembly, and make image			the developing sleeve is uneven,		on the developing
	adjustments under	1	Making Initial Checks.	replace the developing assembly.		sleeve uneven?
						NO
						Is the
				Lock the feeding assembly
				(transfer charging roller)	NO	feeding assembly
				securely; if the locking		(transfer charging roller) locked
				mechanism is faulty, replace the		securely in place?
				transfer charging roller unit.

NO

NO

Are the printouts	NO
foggy?
YES

Increase the setting of the following in service mode:

COPIER>ADJUST>DEVELOP>DE-DC.

Caution:

Be sure to vary the setting in equal amounts.

However, if the setting has already been changed under

3Checking the Printer Side (1/3),

decrease the following in service mode: COPIER>ADJUST>HV-PRI>P-DC.

Caution:

Be sure to vary the setting in equal amounts.

Is the image density	YES
of the tense prints (TYPE6)
appropriate?
NO

Replace the developing assembly, and make image

adjustments under 1 Making Initial Checks.

Is there a fault in the copy image?

NO

End.

YES

Replace the laser scanner unit.

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