C-6501 print defect

[selmila]

hi,i have poor copy/print density problem in KM C-6501 but when i restore the machine by doing Recall standerd data the problem get solved but when i perform auto gama adjustment the density of the print/copy becomes poor again. can i get help on this.

[JustManuals]

Re: C-6501 print defect

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[Texers]

Re: C-6501 print defect

I would suggest to have a look at the colour registration assy, clean if required, then do auto gamma, perform auto colour reg adjust, then do gamma sensor adjust, then gamma sensor offset adjust.
gamma sensor doit for line1/2 and dot 1/2.
same for gamma sensor offset.
when u print the chart for gamma offset look if colours are nicely balanced.. You should see colour above 1st line and barely see colour below second line.. No colour beyond that.
after that do auto gamma adjust again, calibrate m/c and you should be ok.

[selmila]

Re: C-6501 print defect

I would suggest to have a look at the colour registration assy, clean if required, then do auto gamma, perform auto colour reg adjust, then do gamma sensor adjust, then gamma sensor offset adjust.
gamma sensor doit for line1/2 and dot 1/2.
same for gamma sensor offset.
when u print the chart for gamma offset look if colours are nicely balanced.. You should see colour above 1st line and barely see colour below second line.. No colour beyond that.
after that do auto gamma adjust again, calibrate m/c and you should be ok.

The problem is solver by replacing the color registration unit.thanks for your suppote.