4000 SP with SR 790

[stephend]

Paper is getting stopped at the entrance of the finisher, just after the bridge unit ONLY with the first job in the morning.
Customer receives a job from US in the morning 3-5AM and when they arrive at work machine is jammed...Some sheets are in the exist tray, some good some with dog ears...and of course one sheet is jammed at finisher entrance.
All firmware is up to date but I couldn't find any new firmware for SR 790.
Ricoh mentioned this "dog ears" problems and finisher entrance jams only with SR 3020 & 3030...For SR 790 I'm aware of glue on the stepper motor shaft so I replaced completely the finisher...same problem.

I forgot to mention that with any other jobs except this first one machine runs perfectly...no jams during the day.
Right now I turned Auto Off feature off so machine will be on permanently and reduced the fuser temp to see if will improve something or not.

Do you know anything about a new firmware release for SR 790 when is installed on a 4000SP. To me it looks like a software bug...so I'll update the firmware again in the morning.

[Shadow1]

I remember a EPROM chip update for one of the finishers to work with a new machine, but I think that was fairly long ago, and I'm sure it was for something like a CL7100, but it was the same kind of problem - machine went to sleep, and the finisher didn't wake up gracefully. Sorry I'm not more helpful - it's late - but firmware is a good starting place.

[TonerMunkeh]

There is an EPROM update for these finishers doing the rounds but I can't remember what fault it fixed on what model.... might be worth a try

[stephend]

Thanks guys, I will look into it.
So as I mentioned I tested 2 finishers with different serial numbers and same results.
Day 1: 8.5x11" LEF from tray 1....AOF turned on and set for 240 min. REsult dog ears and jamming at finisher entrance.... checked the entrance guide is perfect. Rest of the day no problems...no jams...all day long.
Day 2: 8.5 x 11" SEF from tray 2 AOF turned off... No jams...no dog ear rest of the day perfect as usual.
Day 3: 8.5 x 11" LEF from tray 2 AOF off...dog ears...no jams..because the automated job had just 2 sheets.


So it doesn't matter the tray..it's the LEF orientation that cause the skew, dog ears and jamming problems...and only with this first job.
Today will be the last test and as my customer said for them is no difference if the paper is LEF or SEF...so they will use the SEF orientation from now on.

[Polo-022]

Install tray heaters, you could have this problem in any kind of copier!!
Don't forget to close the window over the copier. It stays open all night, so paper gets wet...

[TonerMunkeh]

Polo I think you might be onto something here. Could it be possibe that because this is the first job the machine does after being off for a while that the fuser isn't up to temperature? Try upping the fuser standby or ready temperature by 10 degrees each and see if that helps. It might be the paper is curling on the first copy and as the fuser gets warmer it settles down.

[Polo-022]

I wouldn't touch fuser temp. adjustment as it is more complicated than the older MFP'S.
But if i had to do that, because tray heaters are too expensive for examble, i would lower fuser temp. to avoid paper curling.
Just the opposite, TonerMunkeh!!!

[banginbishop]

I had this before on a mp 6000 with the finisher. I didn't cure it with firmware as it still kept dogearing for no apparent reason, this was from new 2 m/c's with an identical setup. I'll ask my manager tommorow what he done to them to get them working as i never went back.

[stephend]

Thanks guys for all your suggestions.
As I mentioned at the beginning of the thread I was suspecting the paper from the first moment and the customer air conditioning setup for the night...but we are dealing with "the customer"...They never want to believe a tech from the first attempt....
100% recycled paper and no brand on the box are 100% problems.

To install heaters in Alberta...I thought about it... but I'll be unique. Here we disconnect the heaters because is so dry. To order this option it might be a problem because I must spoke first with the sales guy who's in Toronto to approve it and after I'll install it the winter will be here and the customer will start the heating system forcing me to disconnect the heaters
Delicate situation...but anyway a solution is available for the moment.
In SEF orientation everything is perfect and the customer want to set the dedicated tray for this job as 8.5x11" SEF....so at the end I'm lucky

[CableGuy]

Hi. Not too sure what a 4000SP is in my neck of the woods, but I was just wondering if there was a bridge unit on this machine? If so, have you checked it's installed correctly and all is well with the paper path, i.e. no obsticles or such like? Also, the paper that is backed up in the machine behind the jam, are they dog-eared too?
Sorry more questins than answers here.....

[stephend]

New addition about D011/D013

Paper is getting stopped at the entrance of the finisher, just after the bridge unit ONLY with the first job in the morning.
Customer receives a job from US in the morning 3-5AM and when they arrive at work machine is jammed...Some sheets are in the exist tray, some good some with dog ears...and of course one sheet is jammed at finisher entrance.
All firmware is up to date but I couldn't find any new firmware for SR 790.
Ricoh mentioned this "dog ears" problems and finisher entrance jams only with SR 3020 & 3030...For SR 790 I'm aware of glue on the stepper motor shaft so I replaced completely the finisher...same problem.

I forgot to mention that with any other jobs except this first one machine runs perfectly...no jams during the day.
Right now I turned Auto Off feature off so machine will be on permanently and reduced the fuser temp to see if will improve something or not.

Do you know anything about a new firmware release for SR 790 when is installed on a 4000SP. To me it looks like a software bug...so I'll update the firmware again in the morning.

Hi Cable Guy.
a 4000 SP is a D011, proud member of the D009 - D013 family
Yes everything was checked carefully, including bridge, finisher entrance guide, vertical transport, inverter, bridge gate, etc....and I'll mention it again...it happens only with the first job in the morning if the machine feed paper from a 8,5 x 11" LEF tray. If the orientation is SEF everything is OK.
After this job ALL DAY LONG are NO JAMS... 8.5x11 LEF or SEF or any other format.
After I turned off the AOF feature...so machine will stay on 24h/7 days a week this phenomenon is considerable reduced...still dog ears present...but no jams anymore at the finisher entrance...

And just today I received another call for a D013 this time (5000SP) about intermittent jams in ADF. Tested...worked OK for over 100 originals.
Printed SMC report...surprise.....0 jams at power on, 0 jams in the machine...
ADF....4 jams at power on, 15 jams at interval sensor and 29 at separation sensor. Checked all sensors, and cleaned all optical sensors, replaced separation roller and the feed belt (last replacement was 15K ago) and I'll continue to monitor it. No other codes that SC 991 twice in the last 2 months. Sooo...life is fun...and must be swallowed with a grain of salt...and because it's summer with some lime