Canon MF4500 Series Service Manual

88 8-48-4Service Mode > COPIER > ADJUST > CCDService Mode > COPIER > ADJUST > CCDADJUST■ ADJ-XYCOPIER>ADJUST>ADJ-XYSub item DescriptionCommonto allmodelsADFmodelonlyADJ-X Adjustment value of image reading start position (Horizontalscanning direction) (X direction)[Applicable case]When the reading position of vertical scanning direction in fixedreading is incorrect[Adjustment]• Reduce the setting value when non-image width is larger thancriteria.• Increase the setting value when the area out of original area iscopied.• When increment the setting value by 1, the image reading startposition is moved toward trailing edge by 0.1mm.Setting range: - 30 ~ 30[Value after RAM clear: 0]YesSTRD-POS Adjusting reading position in DF stream reading[Applicable case]When the reading position of vertical scanning direction in DFstream reading is incorrect[Adjustment]• When increment the setting value by 1, image reading startposition is moved toward leading edge by 0.1mm.Setting range: - 30 ~ 30[Value after RAM clear: 0]YesADJ-X-MG Fine adjustment (0.1% precision) of magnification ratio inHorizontal scanning direction in copyboard reading±3%[Applicable case]When copy output image is larger or smaller than original image[Adjustment]Adjust by comparing the copy output and original.Increase the value when output image is smaller.Decrease the value when output image is larger.Setting range: - 30 ~ 30[Factory default settings/ Value after RAM clear] 0[Caution] This adjustment is targeted to adjust the image positionon copy output.This may affect to the image of SCAN.YesT-8-5■ CCDCOPIER>ADJUST>CCDSub item DescriptionCommonto allmodelsADFmodelonlyFBTAR-R Shading target value for RED in copyboard readingSetting range: 128 ~ 384[Value after RAM clear: 290]YesFBTAR-G Shading target value for GREEN in copyboard readingSetting range: 128 ~ 384[Value after RAM clear: 284]YesFBTAR-B Shading target value for BLUE in copyboard readingSetting range: 128 ~ 384[Value after RAM clear: 278]YesFBTAR-BW Shading target value in copyboard black and white readingSetting range: 128 ~ 384[Value after RAM clear: 301]YesDFTAR-R Shading target value for RED in DF readingSetting range: 128 ~ 384[Value after RAM clear: 334]YesDFTAR-G Shading target value for GREEN in DF readingSetting range: 128 ~ 384[Value after RAM clear: 323]YesDFTAR-B Shading target value for BLUE in DF readingSetting range: 128 ~ 384[Value after RAM clear: 318]YesDFTAR-BW Shading target value in black and white readingSetting range: 128 ~ 384[Value after RAM clear: 341]YesT-8-6