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Hello guys!
Have a density problem on BH Pro 951. When I'm trying to print 100% density, it prints approx. 70%, also there are some strange white spots on printouts. Replacing drum, performing Max density auto adj, toner density initial adj, drum set mode did not help, replacing IDC sensor did not help, replacing TCR sensor did not help (Dev. unit has only 400K prints on counter) I'm attaching photo, any suggestions will be appreciated.
Best Wishes
Untitled-1.jpg
On other models white spots are usually related with second transfer, I don't know this model but may give it a look.
Also you can try to Change the control of the toner density sensor to increase toner density (DipSW5-5, 6, 7).
Good luck
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Thanks for your advise. I've already tried changing that dipswitches but it gave nothing. I'm sure that these white spots and low density are somehow related to each other, but can not find exact solution.Originally Posted by tsbservice
Usually when i see this on my several bizhubs 950 it caused by weak developer and time to replace it.
Often it happened about 1 mil clicks in my case.
I've seen this symptom on Sharp models, and the cause was poor paper quality.
"You can't trust your eyes, if your mind is out of focus" --
Is there a repeating interval in the specks, on 13" X 19" paper? What direction of travel? May I assume that you are not doing the recommended maintenance as described in the manual? =^..^=
If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=
Paper causing this? What are you using 1800's parchment? (Or perhaps laid OR maybe even felt) with a built-in option for the feed-roller/blade/IU/dev issue?
Developer and Dev. Unit have only 400K on counter, no more. On other 951s I have not seen such problem even when developer counts 1.200K. Anyway I'm going to swap them tomorrow for troubleshooting purposes.
Symptom occurs on other papers too.
There is no repeating interval between these white spots, their location is random. Feed direction is from right to the left as you look at the photo. I'm doing maintenance, so printer is clean and also all spare parts are ok, they're not at the end of their life.
This is out of my wheelhouse, but HV board?
Try switch 6 bit 7 to 1.
That will disable auto drum voltage control. Basically ignoring the DPS sensor. It would go to a preset value, option to change it would be greyed out.
If there is a massive improvement it means that the DPS the drum or the charge is wacky.
No clue whats up with your machine. Could even be environmental.
Whatever
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