black lines are coming and have cleaned drum unit coronas then also it is coming continously wht to do..img-904200628-0001.jpg
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Re: xerox 5790 black solid lines
It looks like your HV power supply is going bad. -
Re: xerox 5790 black solid lines
From diagnostic test hvps outputs.
If hvps test fail for charge corona or grid then replace drum assy.Comment
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Re: xerox 5790 black solid lines
change the Drum (xerographic module)Xerotk.com
xerox copier technicianComment
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Re: xerox 5790 black solid lines
Remove transfer unit from machine, start to print configuration report and check the image on drum how it looks.Comment
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Re: xerox 5790 black solid lines
Did you test hvps outputs from diagnostic?Comment
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Re: xerox 5790 black solid lines
i had done that but there is no image on the drumComment
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Re: xerox 5790 black solid lines
You are loosing charge. The charge applied to the drum repels toner. If you installed a new drum and still have the problem, inspect and reseat the charge corotron cable going from the drum to the HVPS. If that looks fine, install a new High Voltage Power Supply.Comment
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Re: xerox 5790 black solid lines
This is a wire transfer on dirty, clean the drum following the transfer wire, I'm sure this is good, because I have a lot of machines such a phenomenon, and solve problems through the transfer wire cleaning drum belowComment
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