stressed

[markjuk]

hi all
Ive got a prob with a mpc2500 it copies and prints fine and after a long run on col, it starts too put a patchy yellow background on all copies and it leaves a yellow build up on the trans roller and also it starts too say, toner almost empty even doe its almost full.
Ive changed the dev and dev unit and trans roller, that seems too work for a while then it comes back ???????????????

[TonerMunkeh]

Change the ITB cleaning unit, B223 6028. Yellow PCU and any over or close to life, B223 2027. There's an issue with the Apollon / Athena at the minute putting lines on copies, the PCU's are failing way before life. The yellow toner supply pump could be on it's way out too, causing the toner near end, or it could be that the machine is just using shitloads of yellow toner.

Don't forget, these machines aren't designed to do long runs on colour and battering them is only going to make the problem worse.

[markjuk]

not so stressed

thanks for the fast reply and ive changed the the pcu and the cleaning unit on the belt already, but ill look at the toner pump and try that next.
as a firm we use non ricoh toners do you rate these for this m/c ????

[claudioterrible]

stressed

try to use original toner,we had diferents problems with no original ,with the pumps ,cleaning,etc and will be worst if you run many copies or make copies with high percentage of toner,the paper quality is important too, if the paper left this kind of white dust inside the machine white strippes will apear in your copies

[TonerMunkeh]

It is very important that you use OEM toner in these machines. They're delicate enough as it is without that being thrown into the mix. That would explain the copy quality issues you're having, especially on long runs.

[Herrmann]

Time ago, a too soon "Toner near empty" message was a Firmware Issue, did you already update it to the latest and greatest?

[markjuk]

not so stressed

thanks guys for all the help so far and ive tried some of the suggestions with no joy, so here goes, with what ive done so far
1 changed dev/dev unit
2 pcu(yellow)
3 itb cleaning unit
thats all the parts so far and it gose with out saying ive loaded the latest firm ware
so ive called today at the customers(while iam still awaiting the new toner pump) and the m/c is frozen and asking for yellow toner(even doe the toner is not empty) and the copies previous have all come out with loads of yellow back ground and if you turn off toner end detect, the copier adds toner (this takes about 3 mins) and then comes too copie ready and if u run a col copie off, it comes out with loads of yellow back ground, while bk/wh copies are spot on and if you open any cover and close it the m/c starts too add yellow toner again(3mins) even if you have only run out one col copie????
any ideas guys

[TonerMunkeh]

I think the non-OEM toner has wrecked the pump on yellow. Get it installed, give the toner bottle area a thorough cleaning and vac the toner supply pipes too. Then, stick some OEM toner in it. Your problem should be solved.

[tcs04]

thanks guys for all the help so far and ive tried some of the suggestions with no joy, so here goes, with what ive done so far
1 changed dev/dev unit
2 pcu(yellow)
3 itb cleaning unit
thats all the parts so far and it gose with out saying ive loaded the latest firm ware
so ive called today at the customers(while iam still awaiting the new toner pump) and the m/c is frozen and asking for yellow toner(even doe the toner is not empty) and the copies previous have all come out with loads of yellow back ground and if you turn off toner end detect, the copier adds toner (this takes about 3 mins) and then comes too copie ready and if u run a col copie off, it comes out with loads of yellow back ground, while bk/wh copies are spot on and if you open any cover and close it the m/c starts too add yellow toner again(3mins) even if you have only run out one col copie????
any ideas guys

1, any noise?

2, pull the pcu, look at the toner hopper entrance. Is the entrance full of toner? If yes, shine a torch in the "hole" the unit came from on the 2 white drive gears (AB010367 / AB010368). Are they worn? It could be they are slipping and not turning the toner hopper properly. this may give the "asking for toner" problem. If these gears are worn GOOD LUCK! its's a NIGHTMARE job requiring removal of the controller box + PSU + drive unit to change the second gear. Also, if you have to do this order a FULL SET of gears (4 of each) to fit for all colours. You don't want to take the unit out and find you need more!

If you haven't guessed, I'm in the middle of this job right now, first caused by a seized dev unit.

[Prodigal Son]

Just a thought...

I may be off here, but doesn't it sound like the toner pump actually works fine, and that the machine pumps too much toner into the dev unit? Hence the yellow backgrounds since it's overfull and the only way it can go is out...

I'd guess for something like the non-OEM toner messes the power readings up. As you know, the toner level in the dev unit is detected by a magnetic power, if the toner level is low the developer will give a higher value, and when adding toner it sort of isolates the dev and the value goes down. If the toner isn't isolating but instead enhancing the power because it's made of the wrong components, this would be the result.

I don't know, may be a longshot. But I'd vacuum the old toner and dev out completely, add a new OEM toner and new dev and try 50 copies, I'm sure it'd work.

[Fearless V K]

I am Ricoh certified on this product and have had a similar problem even with OEM toner. The only solution was an engine clear.

There is a problem with the RFID board communicating with the chip on the toner bottle, and a system counter (NVRAM) does not get updated properly.

Make sure you print out a full SMC report (not just non-default stuff) because the copy quality will be wacked once you do this. You will not only have to re-enter the non default stuff, but I also had to run the forced line positioning, and restore factory ACC values to get the copies back to normal.
It also started giving a non oem toner message which I had to turn off in SP modes.

We went through at least 3 drums/dev units and bottles of toner before this one was solved.

[spaceman99]

Had this on MPC4500, turned out the fault is caused by the toner signal from the NVRam not being altered when the new bottle installed.
FIX..
Clean out all pumps , toner pipes and toner detech sns.
copy NVRam on to SD card.
Print SMC Print of Non standard data report. Carry out MEMORY ALL CLEAR. Reinstall NON STANDARD settings,( mainly the Scanner settings) as you may have back ground. plus registration.

Should be all fixed in 30 mins.
good luck

[markjuk]

hi again and thanks again for all the replys and so far ive now changed the the pump and cleaned out the toner supply path and all is well so far but i wait too see and if i it comes up it again then ill try the other ideas
once again thanks too you all!!!!!