ricoh 2090 jams at fuser exit sensor

[ash_572]

kept gettin jams in the fuser unit. jam code is 063. most of the time i find the paper sittin just before going past the fuser exit sensor which is like a long arm sticking out.. paper is not creased or anything, stripper fingers are all clean, all feed rollers are clean. got a feeling that its a timing problem.

just cant figure out why its doing this.

paper jams in the same place 9/10 times.

[schooltech]

That's a reed sensor that sits there, rather than a photointerruptor. I did have one once that would stick just a tiny bit, but it was enough to not have the sensor fully change state.

Thoroughly check that sensor and make sure that it completely changes in both the resting and active conditions.

You can use 5-803, and you should also be able to use a continuity setting in your meter, with the switch in your hand, and make sure that it is working properly.

Of course, other issues could be at play here, but since I've seen this switch get some wear on the little anchor arms, it could also be the same problem you're having.

[imaginemoko]

try to replace this AW20 0008 PAPER FEED SENSOR FUSING EXIT perhaps the actuator can't actuate the sensor properly due to arm worn out... check also this B070 4179 Bracket:Fusing Exit:Upper:Sub-ass'y try to bent a little on its wings of both side attach to a magnet catch on the chassy

[Wishbone]

Also pull the fuser/inverter unit and clean all the one ways on the back.

[moderntech]

check for small paper in ur connection n back

where fuser plugs into back. ive seen small paper n there to cause jamming also

[bonnie750]

First thing is to check if it jams from the paper trays only by feeding from the bypass.

if it jams from the bypass then the fault is not in the vertical paper path. most likely its the registration sensor that needs a good clean. Take out the dev unit and remove the cover plate within the cavity and vac this.

If the jams are found to be when feeding from the trays only then try from tray1 first. if that is ok try 2 and then 3. if you isolate which feed staion is the problem mark each station for reference and swap them in a logical order,they are identical.

Favorite on the stations are obviously feeds etc, worn one ways and dev spillage . the dev usually leaks from the rear bushing and falls onto the feed stations contaminating tray 1 first. there will be a telltale squealing noise from the faulty one way as the paper jams.change all oneways on a particular station as a set.

I find that tray1 is the usual culprit as it is used more than the others.
Another thing to check is the black mylar visible when b2 is open , if you can see a white line acroos the mylar then it's done.This slows the paper just enough that by the time it gets to the fuser exit it's out of time.

[bonnie750]

could also be flats on the press roller or choked press cleaning roller. In the past i've four or five sheets of paper glued to the cleaning roller with toner...worth alook if you don't visit the machine regularly

[imaginemoko]

jam code 63 is in registration aslike telling that the paper is still on this area... check our paper feed supply... perhaps the idler gear BB01 3010 is already worn out or maybe your feed rollers...

[schooltech]

I should have looked up the 063 jam code before I posted. Imaginemoko is right, check and clean the reg sensor. Take out the drum & dv, and two screws later the plate should lift up-the sensor is facing down. The whole area by the reg & relay rollers will probably have a ton of paper sitting in it.

[ash_572]

afterall it was the registration sensor tht was covered in paper dust.

thanks for the help.