Canon Service Mode Adjustments for IR 3300 Copier

CHAPTER 5 SERVICE MODE

COPIER>ADJUST>CCD

<CCD>

Use it to make CCD/shading-related adjustments.

If faulty images are generated after the execution of COPIER>FUNCTION>CCD>CCD- ADJ, enter the settings indicated on the service label.

SH-TRGT

Use it to enter the white level target value for shading correction.

SH-PATIO

Use it to enter the data on the white level ratio (the standard white plate and the standard white paper) for shading correction.

EGGN-ST

Use it to enter the adjustment value for the edge gain correction start posi- tion of the CCD.

EGGN-END

Use it to enter the adjustment value for the end gain correction end position of the CCD.

COPIER>ADJUST>LASER

<LASER>

Use it to adjust the laser output.

If you have cleared the RAM on the DC controller PCB and replaced the PCB, enter the settings indicated on the service label.

PVE-OFST
	Use it to adjust the point of laser exposure.
Range of	-600 to +600 (a change of ‘23’ causes a shift of about 1 mm; a higher
adjustment	setting shifts the image toward the rear in main scanning direction)
LA-OFF
	Use it to adjust the laser trailing edge OFF timing when non-default paper
	is used.
Range of	0 to 600
adjustment	(a higher setting increases the time interval up to de-activation)
POWER
	Use it to adjust the laser paper for non-potential control mode.
Range of	0 to 255
adjustment

5-48 T COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001