Anyone out there having any issues with overtoning on this series? I've got one with only 92,xxx clicks and the Vsp is .20 or so with background/overtoning symtoms, I just changed the developer and there was no difference, drum ground is good at 1.3 ohms, changing bias and charge roller voltage back and forth showed no dif. either. Any thoughts?
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Re: Aficio MP4002 Coy Quality
I don't know why you say it'd a terrible machine? I have over sixty of them (MP4K,5K,4.1,4.2,5.1,5.2) and I have great luck with them. I use N/A Tradings type A toner in them and have ZERO
under or overtoning issues. N/A's toner actually works better than OEM Ricoh. As long as they are set up correctly and the N/A gorund tab is added they run like a champ. Maybe I'm just lucky?Comment
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Re: Aficio MP4002 Coy Quality
I went there today and swapped, to test the drum/ developer unit and still had some background. with original developer/drum unit in if i change the bias settings (sp2-220) to -700 the bias voltage doesn't change as measured/metered at the output of the power pack and front of developer unit. is this normal? I think not as I measured on a mp5001 and it does change. Any thoughts?Comment
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Re: Aficio MP4002 Coy Quality
try with another drum and a new cleaning bladeLive for yourself and you will live in vain. Live for others, and you will live againComment
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Re: Aficio MP4002 Coy Quality
I would not mess with the dev/drum/ charge bias if you got new drum/dev fitted.Just make sure all the bias contacts/transfer belt are clean and you initialize the dev/drum the correct way.After fitting a new dev turn the copier on with the door open so it doesn't adjust the toner density before you do the TD setting and put the default values for bias before you do anything.Comment
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Re: Aficio MP4002 Coy Quality
Re: Aficio MP4002 Coy Quality
Sounds a bit fishy to me......
Sorry, had to be done.Comment
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Re: Aficio MP4002 Coy Quality
I have never liked these machines the LD040/050, the 140/150s and the new style 4002/5002 all built the same and run the same. The quality on these imo has always been crappy compared to others the, either you get light shades, grey backgrounds or even at its best you get a clear image with speckles on the paper, its also the only model I come across where the mag roller at pm look like its covered in black tar. I have seen dirty mag rollers but this machine beats all it is as if it was melted on.
Most of the time the grey back ground or shading can be caused from the dirty mag roller. I just had one of these yesterday and was asking myself whats the trick to getting these to run with any decent quality. Per the manual if you replace the pcdu parts as well as the develper.
First you have to put a piece of paper between the hopper and dev unit so there is no toner mixing before you initialize.
(drum procedure)
SP 2001 has to be at default setting i believe 1500
Run SP 3001-002 ID sensor
Run 2805 Process
Run 2810-001 Greyscale
(developer procedure)
Run 2801 Developer initialization
Remove sheet of paper from hopper.
A few more steps then most of the other models when replacing pcdu parts, I also think the web roll on this model was a little to overbuilt for its purpose takes like 20 mins to take that web assembly apart you when you can do a 6002 web in like 5 mins. I will say for the most part I don't get a lot of service issues most of the calls i get are quality problems.Comment
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Re: Aficio MP4002 Coy Quality
I am also has same problem but no solution yetComment
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Re: Aficio MP4002 Coy Quality
Do you remeber MP4000 and faulty toner 6-7 years ago?
Ricoh have released new toner with "A" letter in the name to solve problem.
This is the same issue in my humble opinion.
Synthetic toner particles stick up onto developer particles and TD sensor mesurement is faulty.
At the moment in Poland we have few tens of cases with toner overfilling. Ricoh Poland tries to collect data from field and escalate problem.
Someone says that problem occurs only with toners bottled in France.Last edited by pppp; 03-20-2015, 09:24 AM.Microsh.t is finished and Linux RulezComment
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Re: Aficio MP4002 Coy Quality
The copy quality on this family of machine is subpar at best. Just about every machine we have in the field has had overtoning/backgrounding problems. Thank the Lord we are finally starting to see these being replaced.Comment
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Re: Aficio MP4002 Coy Quality
Why are you replying to a 3 year old thread.Comment
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Re: Aficio MP4002 Coy Quality
Did you put the piece of paper between the dev unit and the drum unit when you set up the developer. If not, that is your issue. By the way, the developer does not run life in that machine.Comment
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Re: Aficio MP4002 Coy Quality
Most of the Ricoh machines specially these models you will have the same trouble if you don't use original developer / toner.
I have been in the same situation several times already before . Made so many adjustments but the same.Comment
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Re: Aficio MP4002 Coy Quality
This may be an old thread, but i can't help comparing the MP4002/5002s with the MP03 and MP04 series. I have quite a number of these MP02 series still performing wonderfully great in the field although they are already more then 8 years and doing well above 2 million copies.
It all boils down to using the right toners and developers and really following up with regular PMs and service schedule and they work superbly.
The fusing and drum units on these models are still in good shape and by all account they are much much more durable and reliable then the MP03 and MP04 series. The fuser films on the 03 & 04 series are a nightmare.
They only lasts probably less then 60k as compared to the 02 models, whose more durable heavy metal roller can do well above 300k!
Ultimately it is not only the costs, but also the time that you can save with these 02 models. The fuser films on these 03 and 04 models also has issues with double images especially with heavy usage and therefore causing a lot of wastages on paper costs.
Really, all in all not a good transition by Ricoh from the 02 to the 03 & 04 series.Comment
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