Canon Understanding Service Mode Level 2 Adjustments

CHAPTER 3 IMAGE PROCESSING SYSTEM

3.4 Related Service Mode

COPIER>FUNCTION>CCD>CCD-ADJ (shading auto adjustment)

Execute the mode after replacing the CCD unit, scanning lamp, reader con- troller PCB, or standard white plate.

COPIER>ADJUST>CCD>PPR (density data of standard white pa- per)

COPIER>ADJUST>CCD>PLT (density data of standard white plate) COPIER>AJDUST>CCD>GAIN-E/O (gain adjustment input of CCD output)

COPIER>ADJUST>CCD>OFST-E/O (offset adjustment input of CCD output)

COPIER>ADJUST>CCD>SH_RATIO (white level ratio data of stan- dard white plate and standard white paper during shading correc- tion)

If a faulty image is generated after executing shading auto adjustment, enter the parameter values indicated on the service label.

COPIER>ADJUST>AE>AE-TBL (text density adjustment for real- time AE mode)

Use it to change the parameter for adjustment of the density correction curve (for real-time AE mode; 10 steps).

Range: 0 to 9 (default: 4)

Copy density

White

Lower setting			Higher	setting
decreases text de		ity	increases	text density
	ns

White

Original density

F03-304-01

3-8 R COPYRIGHT © 2001 CANON INC. CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001