Very Poor quality images

[mrwho]

Could be due to the developer being projected out of the unit.

Stick a magnetic screwdriver tip onto the waste toner bottle and check if developer comes out with it.

[millcastleprint]

I did the screwdriver test and yes developer comes out with it?

[mrwho]

Then maybe you've got a bad HV board? I'd start checking the connections, and if doesn't solve it, try to exchange the HV board with a new/working one.

Maybe some other techs can give some more advise on this, since I never experienced this myself.

[jsw2k]

I don't know this model very well, but I had a Xerox with 2 DV units messing up at the same time, both with problems like you're experiencing. Might be worth a look at the mag rollers to make sure developer is in ample suppl and evenly distributed.

[dragonman]

i had this on a m/c and a new dev tank sorted the issue straight away. it seems the issue is caused by lack of dev in the tank, but im not sure why - may be tcr signals wrong????

[acusso1234]

Do you shake the IUs before installing them? I suppose that compatted developer have broked the seals tha retains the developer into the units.

[Victor285]

Are the imaging units New or refurbished? Were they changed at the same time? I have seen this in some Canon devices as well. Changing the imaging units corrected the problem. Believe that the charging bias inside the IU is bad or being shorted out, possibly by waste feedscrew auger as lines/stripes are diagonal. I thought this was suggested earlier but did not see response posted.

[konikilla]

I think the reason that you can see it on the IU's and the Transfer belt is that it hasn't transfered properly to the belt. For all your IU's or laser's to be presenting the same problem is lottery numbers unlikely. You need to be looking at your image transfer belt. If not that then something connected to it - Earthing, Charging, High Voltage Board or something oddball like foreign body discharging (staples, paper clips etc..) or something else just as weird.

[stevelau]

Had u done the gradiation/gamma? Pls counter check the flat cable(white colour) behind the m/c and see whether the pins is sitting correctly.

[pinoyprinter]

Looks like your iu lacks toner, i would suggest to go to service mode and load toner on MYK (four times each affected color), then execute running mode for 5 minutes. if not it could be a HV problem.