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We have a problem with almost all our 22xx.
If you print a greytone b/w image you will see a vertical band, approx. 3-5 mm wide, very dark, or black, 115 mm from leading edge.
You can also see it on AP3800/CL7000/CL7100 but not as much as this.
In color, there is a slight band but not as much as in b/w.
We have a lot of things, among others, we have tried to adjust engine speed etc. with no result.
This seems to be a general problem.

Anyone....?
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This is caused by the fuser speed, which is slightly lower than the transfer belt speed. Therefore the paper stalls as it get to the fuser rollers giving the grey band.

Check out page 4-78 of the service manual and adjust accordingly. You can make the adjustments to get rid of this problem.
iF YOU DON'T THINK IT IS AN ENGINE SPEED ISSUE, THEN WHAT DO YOU THINK IT IS? i AM HAVING THE SAME SYMPTOM WITH A sAVIN C3828. iF YOU PRINT SINGLE COLOR TEST PATTERNS ON 11X17, YOU WILL NOTICE A BAND CORRESPONDING WITH EACH OF THE COLOR DRUMS TOO. i THINK IT IS A MOTOR SPEED ISSUE, BUT i HAVE HAD NO SUCCESS WITH ADJUSTING THE K DEV MOTOR SPEED. i HAVE EVEN REPLACED THE MOTOR AND THE TRANS BELT UNIT JUST FOR FUN. NOTHING SEEMS TO BE WORKING, SO WE HAVE A sAVIN REP COMING NEXT WEEK. i WILL POST ANY FINDINGS WE HAVE.

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