MP4001 over toning only in text areas

[digicor]

I have mp4001, new DV, new drum,charge roller, see example, what could be causing this?
overtoned? possibly? voltage issue?
Thanks for any suggestions

[digicor]

Re: MP4001 over toning only in text areas

look at the word " acknowledgment"

[TonerMunkeh]

Re: MP4001 over toning only in text areas

If you've got reason to go into the PCU to change parts, change the dev and clean the mag roller. Are you using compatible toner?

[digicor]

Re: MP4001 over toning only in text areas

thanks did that, and im using oem toner,

[DougD]

Re: MP4001 over toning only in text areas

Toner blasting.
Did you reset the charge roller voltage to the standard value of 1500 with SP 2001-001 after rebuilding the PCU?

[digicor]

Re: MP4001 over toning only in text areas

ok ill try that thank you

[Counsel]

Re: MP4001 over toning only in text areas

This is one model you might want to review the developer/drum replacement procedures in the manual, this model has a few extra steps beyond just initializing the developer, and when done incorrectly its just a mess of problems.

[digicor]

Re: MP4001 over toning only in text areas

OK , just had to run over 200 sky shots to under tone the machine enough to get the splatter out, the cherge was at 1500, but i noticed it moving to 1530 from time to time,
i ran all procedures again as in the man for drum replacement , i did however get a sc 372 after running the 2801 toner density adj, (i did put papaer between the pcu and the dv intake,) after i did DV, cleaned all erase lamps,
its acceptable at this point, Im suspecting the DV mag roller? and ID sensor faulty? I will replace the ID sensor first and re try the 2801 , or just leave it alone, its acceptable now. so lets see how it goes, thanks for all the info.

[digicor]

Re: MP4001 over toning only in text areas

OK after all this, i changed out the DV roller and whalah , there was a ton of splatter in the dv roller area as well as all over the dv roller cover and the filter, not this is the second time ive changed dv and "cleaned" the dv roller because of the "hazing" on the roller,each time i used a green scotch pad, very non abrasive, the first time i had to change the DV roller because it was gray back grounding so bad i couldnt fix it,second time i get the splatter,so now how do you clean the "hazing" off the roller, dry wipe just wont take it off, ill leave it on for now, but this does cause faded prints ,and spillage and, spotting over time, if there is a cleaning process please let me know, thanks

[Qball]

Re: MP4001 over toning only in text areas

Make sure you're getting the doctor gap nice and clean. Old, flaky toner will accumulate there and cause spotty and flaky images.

Sent from my SM-G900V using Tapatalk

[digicor]

Re: MP4001 over toning only in text areas

ok sounds like a good idea, i have another question, I had this happen to me on the blk n wht machine's Im normally a color ricoh, but the BnW call come my way, I have just ran into this twice as well,
Customer nicked the drum removing a jam, I replaced the drum and blade, run the drum change sp's 2001 set to 1500/3001/2805/2810, after 15 copies, i start to get the shading look top and bottom then its all over the whole page, i think it related to grounding , but it wasnt grounding out before i switched the drum, i put the old drum back in , and its still there but not as bad, Im thinking its the charge roller? Ive checked the charge connections, the drum is in place. Can some one tell me what be the cause of this?
see attachment
201611181544.pdf

[Counsel]

Re: MP4001 over toning only in text areas

A few things to mention as i was reading your previous 2 reply's, you mention running 2801 in the one reply but not replacing the developer at that time, then on the next reply you said you replaced developer. 2801 should never be run except for when new developer is put in after that initial time if you run it again it will overtone the machine. 2801 sets the balance between developer and toner, this is the reason they say to put paper between the developer entrance area, its to keep extra toner from being mixed with developer during initialization.

The sc code you mentioned is related to an imbalance between toner and developer that could be a faulty TD sensor, which if that is faulty it can cause problems with the amount of toner. Also on this model replacing the developer roller i.e. mag roller will work but it will eventually look like the one you removed, this machines has always had dirty magnetic roller, about halfway to PM the mag roller will be almost completely black from stuck on toner pretty much just have to lift it out and scrape the developer off into the developer hopper and just scrub it hard with a green scotch pad or crumpled up piece of paper to get the residue off, pretty common for this one.

On your recent reply one thing to check is the grounding plate on the developer unit, when you flip the pcdu open so you can see the mag roller, there should be a flat metal piece that just hangs on the rear side of the developer unit the top edge touches the mag roller/doctor blade frame and then it runs to the back of the unit by the plug connector where it makes contact with the back of the machine, this piece sometimes fall off when removing the magnetic roller from the developer unit or when replacing it or its out of place and not in contact with the mag roller.

Also if you followed the manual to the letter it tells you to remove two springs when replacing the drum (one step i usually ignore) but if you did remove them and did not reinstall them the cleaning blade will not function properly and can cause dirty prints. I also see background like that when the mag roller is dirty pretty much every time you open the pcu you should clean the mag roller. Check your PMs on the transfer belt and blade as well. Clean the ID sensor which hangs on a bracket inside the machine just above the PCDU area it does get dirty also.

Sometimes when i get greyish images like that right after working on something, I usually run a 100 copies of something clean, seems like this will get it to self adjust its density back to normal sometimes.

You might get some better advice from the other guys, I have never like the 4000/4001/4002 series machine for exactly these problems seems like once you touch the thing its mess to get it back to normal again.

[ESTANISLAOWENENTON]

Re: MP4001 over toning only in text areas

ok sounds like a good idea, i have another question, I had this happen to me on the blk n wht machine's Im normally a color ricoh, but the BnW call come my way, I have just ran into this twice as well,
Customer nicked the drum removing a jam, I replaced the drum and blade, run the drum change sp's 2001 set to 1500/3001/2805/2810, after 15 copies, i start to get the shading look top and bottom then its all over the whole page, i think it related to grounding , but it wasnt grounding out before i switched the drum, i put the old drum back in , and its still there but not as bad, Im thinking its the charge roller? Ive checked the charge connections, the drum is in place. Can some one tell me what be the cause of this?
see attachment
[ATTACH]34806[/ATTACH]

If the developer is not new you must change it if or if.


If you do not have money and need to get it to work I do the following:


I remove the toner bottle


I start making copies as dark as possible until I order toner.


Once he asks for toner and for the machine I remove the paper or open the drawer.


I observe the last one and look if it is very pale, being thus, MANUALMETE I add a three or four spoonfuls of toner directly to the development unit.


I installed it again and hopefully it will recover.


I observe with an original that has good density.


If I look good, I'll leave it there.


Do not repeat 2801 or 2805 again as it will darken the copy


Yes, change the revealing and holy remedy