MP 301 toner condition

[craigster]

Hello all, so needing some help on this and my Ricoh is a little rusty being we sell kyocera and Xerox but we also work on everything else. the call put up was for toner add and copy quality. I installed a new pcu unit and did the procedure what the service manual said. Its loading toner fine but it just keeps adding and then basically overtones and blows toner everywhere around the pcu unit. Tried another pcu unit, OEM Toner cleaned all sensors and still doing the same thing. PCU unit is OEM also.
your input would be appreciated as always.

Thank you

[Phil B.]

Re: MP 301 toner condition

Hello all, so needing some help on this and my Ricoh is a little rusty being we sell kyocera and Xerox but we also work on everything else. the call put up was for toner add and copy quality. I installed a new pcu unit and did the procedure what the service manual said. Its loading toner fine but it just keeps adding and then basically overtones and blows toner everywhere around the pcu unit. Tried another pcu unit, OEM Toner cleaned all sensors and still doing the same thing. PCU unit is OEM also.
your input would be appreciated as always.

Thank you

how many pages on fuser/dev/itb?

what does the dev unit look like?

have all PM's and Adjustments been made and on time?

what errors are listed on ELog?

run the sensor tests .. could be the TD sensor is wacked.

print out the service sheets... Are the bias settings correct? (compare to SM and old BC)

[FrohnB]

Re: MP 301 toner condition

How many total prints on machine?
If you installed a new PCDU, then I would be looking at the toner collar in the toner hopper P/N: D1273465. The mylars that move the toner get weak and bent and toner just packs up inside, and eventually is purged out of every gap it can find. Also make sure your quenching lamp above the PCDU is clean (usually gets covered in toner/dev).

[slimslob]

Re: MP 301 toner condition

OEM does not mean Genuine Ricoh. If it is an after market OEM PCU it might not be the correct PCU or at least have the correct toner density sensor. an incorrect TDS or improperly connected TDS will cause either under or over toning. There could also be a board problem causing the toner add motor to run continuously.

[davel]

Re: MP 301 toner condition

how many pages on fuser/dev/itb?

what does the dev unit look like?

have all PM's and Adjustments been made and on time?

what errors are listed on ELog?

run the sensor tests .. could be the TD sensor is wacked.

print out the service sheets... Are the bias settings correct? (compare to SM and old BC)

MP301 pcu D1272110 is complete unit so dev unit new and it will take long time to find ITB in 301, probably bad toner supply unit.

[fshead]

Re: MP 301 toner condition

what were the original copies b4 changing PCU?
IS the toner original RICOH?
What settings did you do?
were the copies good after new drum>
did you inspect fuser ?

[Firthy]

Re: MP 301 toner condition

How many total prints on machine?
If you installed a new PCDU, then I would be looking at the toner collar in the toner hopper P/N: D1273465. The mylars that move the toner get weak and bent and toner just packs up inside, and eventually is purged out of every gap it can find. Also make sure your quenching lamp above the PCDU is clean (usually gets covered in toner/dev).

THIS^^^^^^

Did you replace the dev? From memory on the mp301 you have to do a dev init from service menu. Sp-3 something i think. haven't had to do one in years

[sandmanmac]

Re: MP 301 toner condition

Hello all, so needing some help on this and my Ricoh is a little rusty being we sell kyocera and Xerox but we also work on everything else. the call put up was for toner add and copy quality. I installed a new pcu unit and did the procedure what the service manual said. Its loading toner fine but it just keeps adding and then basically overtones and blows toner everywhere around the pcu unit. Tried another pcu unit, OEM Toner cleaned all sensors and still doing the same thing. PCU unit is OEM also.
your input would be appreciated as always.

Thank you

I've experienced this before. When installing a PCU into a machine where the Unit has failed due to chewed up gears, failed TD sensor, or whatever the case, and therefore starving the unit of toner.
Simply replacing the unit and running dev initialization often doesn't calibrate the unit properly and the add toner condition comes back shortly after.
So when replacing the PCU while in an "add toner" condition, first run SP2928 (toner end clear), to clear the message, and then install the new PCU and run Dev initialization (SP2801)

[davel]

Re: MP 301 toner condition

THIS^^^^^^

Did you replace the dev? From memory on the mp301 you have to do a dev init from service menu. Sp-3 something i think. haven't had to do one in years

New PCU D1272110 has dev in it.

[Firthy]

Re: MP 301 toner condition

New PCU D1272110 has dev in it.

Sorry I wasn't clear enough in my question. Did you put a new dev unit in aswell as the pcu?

If you didn't I'd check the gears that sand mentioned above, I've seen some pretty chewed.

[sandmanmac]

Re: MP 301 toner condition

Sorry I wasn't clear enough in my question. Did you put a new dev unit in aswell as the pcu?

If you didn't I'd check the gears that sand mentioned above, I've seen some pretty chewed.

Dude....
The PCU includes the drum, dev, gears, Etc...it's an all in one unit.
Yes, as he said he's replaced everything, because that's the ONLY way to do it

[Zaxxon]

Re: MP 301 toner condition

Dude....
The PCU includes the drum, dev, gears, Etc...it's an all in one unit.
Yes, as he said he's replaced everything, because that's the ONLY way to do it

Gets my vote, always works.

[Firthy]

Re: MP 301 toner condition

Dude....
The PCU includes the drum, dev, gears, Etc...it's an all in one unit.
Yes, as he said he's replaced everything, because that's the ONLY way to do it

Sandman I've worked out whats happened. I replied to Davel thinking he was the orginal poster but its actually craigster, and craigster hasnt responded to his post yet.

The PCDU can be pulled apart and the pcu section can be rebuilt. Personally we found you can get 2 rebuild pcu for every dev. And in craigster orginal post he only said he replaced PCU not PCDU, so you can see where ive confused myself.

[fshead]

Re: MP 301 toner condition

Sandman I've worked out whats happened. I replied to Davel thinking he was the orginal poster but its actually craigster, and craigster hasnt responded to his post yet.

The PCDU can be pulled apart and the pcu section can be rebuilt. Personally we found you can get 2 rebuild pcu for every dev. And in craigster orginal post he only said he replaced PCU not PCDU, so you can see where ive confused myself.

I ve rebuilt many b/w all in one drums and was tortured by using Katun soft drums that lasted maybe 15k b4 lines showed on drum.
I think there are good aftermarket drums and drum blades now,FUJI drums JAPAN and a bright green one made in GERMANY.
I understand that in some parts of the world NEW OEM unit is not easy or cheap to find so I can see them doing a rebuild..
Not sure where the guy asking for help is from..

[copyaction]

Re: MP 301 toner condition

It can also be mentioned that with a slight modification the type 1515 pcu can also be used in the MP301, by swapping the faceplate on the pcu or removing the plastic locator pin on the front of the machine.