Konica Minolta Bizhub PRO C500 COLOUR PROBLEM

[mrwho]

I've completely removed color registration unit and clean everything in it. I don't know how to do the manual adjustment, i've made only automatic colour registration.

Check the service manual, there's a list of adjustments there as well as telling when each adjustment should be made.

[RRodgers]

I've cleaned both sensor, i,ve perform automatic colour registratio, nothig change!

I'm pretty amazed that you are not getting 45-20's with the color's being off like that. Check to be sure that your belt is tracking properly. I'd be willing to bet it's walking to one side just a little too much and causing your problem.

Also take the belt off and be sure that drums are sitting properly as well. (usually not a problem as the ITU won't go back in if they are not) Check the springs that hold the dev unit's are all in there proper places as well. A spring could tweek the dev unit just enough to cause this. Although I'm still amazed you are not getting 45-20's.

And all while you have it all apart be sure to clean and vac it as well. Just DO NOT VAC the drum pots!!!

PS
Images are NOT doubled, it's a color reg issue, double image is seeing the same thing twice on a different spot of the paper. What is you have is colors not laying on top of one another like they are suppose to.

[Gort]

Try doing a "Recall Standard Data" in the Image Adjustment menu.

Before doing the "reset", print out the Adjustment List to save time resetting centering and timing adjustments.

Disable Color Registration Correction Control in the 25 mode, software dipswitch 25, bits 3 to 1 (ON) and bit 4 to 0 (OFF).
Run [Auto Color Registration Adjustment] in the 36 mode.
Enable Color Registration Control (software dipswitch 25, bits 3 to 0 (OFF) and bit 4 to 0 (OFF)).
Perform Auto Color Registration adjustment.

If the Color Registration fails after this, replace the color registration sensor assembly.

[HENRYNENA]

i got a konicaminolta c500 with a 45-20 code help

[RRodgers]

i got a konicaminolta c500 with a 45-20 code help

Could be a couple of things.