j-012

[elmaligno]

Good morning, I have a MP8001 that every 2-3 prints, from any drawer, gets stuck in synchronism with the code j-012.
The black mylar that is there and is usually damaged is ok, I have cleaned the sensors in that area and the rollers, the jam is very frequent, as I say, even sometimes in the first printed sheet, it remains without stumbling on anything, as if the sync rollers do not rotate.
Any ideas?
Thank you.

[luca72]

Good morning, I have a MP8001 that every 2-3 prints, from any drawer, gets stuck in synchronism with the code j-012.
The black mylar that is there and is usually damaged is ok, I have cleaned the sensors in that area and the rollers, the jam is very frequent, as I say, even sometimes in the first printed sheet, it remains without stumbling on anything, as if the sync rollers do not rotate.
Any ideas?
Thank you.

could be the one-way bearings messed up on the paper pick station, have you seen any jams? have you noticed any strange noises during the pick?...like, brief engine noise under stress?

if I remember correctly, on those models the socket stations are reversible, you could remove the lowest one (which is usually less used, and therefore newer) and put it in place of the first one, to see if it changes anything in the frequency of jams

[slimslob]

could be the one-way bearings messed up on the paper pick station, have you seen any jams? have you noticed any strange noises during the pick?...like, brief engine noise under stress?

if I remember correctly, on those models the socket stations are reversible, you could remove the lowest one (which is usually less used, and therefore newer) and put it in place of the first one, to see if it changes anything in the frequency of jams

It was a big enough problem that Ricoh put out a bulletin on it. It had a table that indicated which gear on which feed station to replace and description of how to replace.

Do you have the service manual for the MP 8001? It is in the manual under 6.3.2 FREQUENT PAPER JAMS

[elmaligno]

It was a big enough problem that Ricoh put out a bulletin on it. It had a table that indicated which gear on which feed station to replace and description of how to replace.

Do you have the service manual for the MP 8001? It is in the manual under 6.3.2 FREQUENT PAPER JAMS

I got it, thanks for the help

[MIKON]

Usually caused by developer leaking out rear of developer unit onto feed stations

[slimslob]

Usually caused by developer leaking out rear of developer unit onto feed stations

Or as noted in the service manual reference I gave, caused by the one-way bearing not being properly inserted into the gear.

In fact I never had a problem with developer leakage. And I had machines go well over 5M before being traded in.

[luca72]

It was a big enough problem that Ricoh put out a bulletin on it. It had a table that indicated which gear on which feed station to replace and description of how to replace.

Do you have the service manual for the MP 8001? It is in the manual under 6.3.2 FREQUENT PAPER JAMS

the manual on octopus is no longer available, but i found a copy on our server.
yes i remember seeing that bulletin years ago, however i found that usually when that case occurs, it is usually accompanied by a short squealing noise, like when you block an engine with your hand, due to the bearings trying to spin in the opposite direction of the engine, slowing it down.
my boss and i have verified that generally developer leaks from the rear bushing occur mostly on faster models (eg 9000>) probably due to overheating and old age of the part.
a good fix if you don't have the new bushing, is to disassemble the gear, and put very thick grease around the bushing, eg copper grease, this will stop the leak, and as someone here suggested in the past to stick a piece of cardboard cut out over the gears of the pick-up station.

ah!!..then I saw that the story of the noise is written in black also on page 1 of the attachment taken from the manual