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NEOTECH
06-10-2012, 09:57 PM
hi dear's i have a problem in bizhub 920 pro , i replaced drum ,developer,cleaing,blade and toner due to too dakr back ground image. but still same problem
i also encounter only 2nd side back ground same machine whats wrong with this machine.
if any one have a idea plz help me,

thank's

blackcat4866
06-10-2012, 10:02 PM
Did you do any of the drum peculiarity adjustments associated with these parts replacements? If not you'll need to buy a manual to help you do quite a few adjustments. =^..^=

NEOTECH
06-10-2012, 10:21 PM
dear i have manual and i did drum peculiarity adjustments but not solve tha problem image with back ground.

mrwho
06-10-2012, 10:22 PM
Also the transfer/separation corona may be the culprit. Clean it well and rebuild it with new wires and, as blackcat said, run the drum peculiarity adjustments.

maccenterpc
06-11-2012, 12:32 PM
I had similar problem, follow the above steps have not solved. Printing with background on the 2nd side.
I changed the developer unit and the problem was solved. Test with another developer unit.

scottybbb
06-11-2012, 11:27 PM
I have had developing units go bad on these machines and leave background on copies.Try replacing developing unit.

NEOTECH
06-13-2012, 01:34 PM
I did also same thing i replace developer unit and transfer assambly but i will same copy with background not solve problem.
u have any idea.

Albonline
06-13-2012, 02:09 PM
check the hv adjustments aginst the defaults and put them back to factory specs. have had maney units come to me as unfixable , and setting them to specs fixed them.

CompyTech
06-13-2012, 03:20 PM
Did you also check/replace primary charger as well? Also above post, true. And do Peculiarity Adjustments. Good luck :cool:

NEOTECH
06-13-2012, 08:27 PM
i tell some think i did transfer value high like factory 45 set. i make 135 copy low backgroun but not good what u think?

Albonline
06-13-2012, 08:36 PM
run some more and see if it gets better.

kronical
06-14-2012, 07:15 PM
HVPCB pending steps above.

remati
06-14-2012, 09:57 PM
hi dear's i have a problem in bizhub 920 pro , i replaced drum ,developer,cleaing,blade and toner due to too dakr back ground image. but still same problem
i also encounter only 2nd side back ground same machine whats wrong with this machine.
if any one have a idea plz help me,

thank's

...Tray to change the wires and the grid of the HV 1 corona or change it complete and the same with de transfer/sep corona the wires... but the better is change the complete corona you could have a problem of HV transfer/separation discharge (HV transformer)

methogod
06-17-2012, 06:31 AM
most of the settings take about 500 prints to become active...

you using OEM toner?

methogod
06-17-2012, 07:08 AM
most of the settings take about 500 prints to become active...

you using OEM toner?

RRodgers
06-17-2012, 05:35 PM
Did you clean the sensors under the drum?

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