Mp2501, Overtoner after toner replacement

[Codex]

Hello

We have a few (20) Mp2501 around, and some of them (different locations, different customers) goes in Overtoner after toner replacement.. Toner is OEM, many machines have new developer and/or new pcu, charge roller, transfer roller and blade.
"Toner near end" is set to 20 sheets instead of 50 sheets.

Do someone have the same problem with this boxes from hell???.

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[Polo-022]

Re: Mp2501, Overtoner after toner replacement

Yes Codex, i have the same problem with this Ricoh model. Not very often, but it happens.
PM at 50K. prints, seems to be normal.

[8T2]

Re: Mp2501, Overtoner after toner replacement

we still have loads of these pieces of crap where im currently based and been having this issue since beginning of Covid. the info we received was that the composition/formula for the toner had to be changed and some SP's to adjust

what I've been doing is

1. change the SP's
SP2201-02: H
SP2201-03: -400V
SP2922-01: 0.3sec
SP2923-01: 25sec
SP2929-01: 3.0
SP2996-01: On

2. run skyshots/internal test prints till desired density is reached with toner removed

3. strip and clean drum unit (especially toner recycle)

4. Initialise developer

5. replace toner and print full SMC

6. if it didnt help, order new developer (may find machine stopped doing it and running fine when you return with developer)

if it did help good job (may get a callback that its doing it again within a day or 2 and now you have to clean everything including the laser when you bring the new developer)

and be prepared to do this again with next toner change which makes me question the "formula changed" claim but thats a completely different rant that deserves its own thread



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[slimslob]

Re: Mp2501, Overtoner after toner replacement

we still have loads of these pieces of crap where im currently based and been having this issue since beginning of Covid. the info we received was that the composition/formula for the toner had to be changed and some SP's to adjust

what I've been doing is

1. change the SP's
SP2201-02: H
SP2201-03: -400V
SP2922-01: 0.3sec
SP2923-01: 25sec
SP2929-01: 3.0
SP2996-01: On

2. run skyshots/internal test prints till desired density is reached with toner removed

3. strip and clean drum unit (especially toner recycle)

4. Initialise developer

5. replace toner and print full SMC

6. if it didnt help, order new developer (may find machine stopped doing it and running fine when you return with developer)

if it did help good job (may get a callback that its doing it again within a day or 2 and now you have to clean everything including the laser when you bring the new developer)

and be prepared to do this again with next toner change which makes me question the "formula changed" claim but thats a completely different rant that deserves its own thread



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I like using the Checker Flag test pattern.

[TonerMunkeh]

Re: Mp2501, Overtoner after toner replacement

Stupid question - are you using the D158 dev?

[Codex]

Re: Mp2501, Overtoner after toner replacement

Stupid question - are you using the D158 dev?

Yes... I use the D158 9640

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[fbkhan3]

Re: Mp2501, Overtoner after toner replacement

I have had dozens of them with Background issue.

Increase the DV Bias to -650 .

In few cases new OEM drum caused the background.( Drum replaced )

For low copy quality i have also used polygon motor from MP 2000,never had any low quality issues since.


still running like charm.


Regard's

[Codex]

Re: Mp2501, Overtoner after toner replacement

I have had dozens of them with Background issue.

Increase the DV Bias to -650 .

In few cases new OEM drum caused the background.( Drum replaced )

For low copy quality i have also used polygon motor from MP 2000,never had any low quality issues since.


still running like charm.


Regard's

I clean the polygon motors on every service visit, i agree that a dirty polygon motor can cause light readings and then overtoning... But we hab a lot of Mp2000 around, never cleaned polygon motor... Worked fine until their end of life. I think that with the Mp2501 Ricoh made a step back.

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[luca72]

Re: Mp2501, Overtoner after toner replacement

I clean the polygon motors on every service visit, i agree that a dirty polygon motor can cause light readings and then overtoning... But we hab a lot of Mp2000 around, never cleaned polygon motor... Worked fine until their end of life. I think that with the Mp2501 Ricoh made a step back.

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Ciao Codex, look, i always do like 8T2 too, (except the sp), clean everything well, and do a few black -copy/prints to unload the exced toner, without the toner revolver inside, until you like black, (I use the page-counter triangle as a visual reference), and then memorize the value by initializing the developer....obviously this works until the developer is too contaminated