taskalfa 4500i paper jam

[Gab]

One sided copy is ok but when making 2-sided copies paper jam even from first copy. paper dtops at duplex cover (the cover behind MP (by pass ) support tray) . I replaced the whole paper conveying unit out but the same paper jam. The coney unit is from taskalfa 5501 . Also the machine is olivetti d copia 4500. In the attached file the paper jam. Any idea?

[dalewb74]

and the error message is???

[blackcat4866]

Error message or jam code, please. My crystal ball doesn't seem to be working today ... =^..^=

[nathicana]

On these models the duplex gate on the exit unit would bind causing duplex jams.

Maintenance mode u033 branch exit to test the gate movement, you should hear a vigorous click when the gate moves.

You can check the gate without any disassembly, you should be able to move it a little from side to side. It is probably too tightly fitted.

Here is a page from the troubleshooting guide that tells you how to insert spacers inside the side frame to create some space.

Our dealership would just replace the whole exit unit (302LH94271) but I have fixed them with the spacers.

4500i duplex jam.pdf

[Gab]

jam code 508. Every time i try to make 2sided copy always have paer jam
I swapted the exit unit with an other one but still paper jam.

[Gab]

aLSO SWAPTED with an other fusing unit with no result

[Slammers]

Media: Have you tried with your own paper that you know isnt the cheapest tissue paper garbage that customers love to use?

Clean it out. From your picture I can just tell the state that machine is in. Get a powerful plug in air duster and clean all transport sections and ensure all paper passge sensors are clear.
Check for build up of compacted dust/toner on the white idler rollers and clean the grey transport feed rollers.

Perform the steps noted by nathicana.
You did say you swapped the exit unit but you did not specify if you performed the field service modification for the spacers, this needs to be actioned.

Main Drive: (This sometimes manifests as a CQ call rather than a jam, but can be both.)
Had a few of these lose teeth in the main drive assembly which was causing the feed to "skip", this would cause image formation issues as the paper wouldn't run pass primary transfer smoothly. This would also cause jams as the timing would go out causing a logic/timing jam, which would be exacerbated on duplex. This would not cause jams on EVERY feed though, just something to check.

You say it runs fine simplex, if you run a whole batch do you hear any untoward "crunchy" noises from the rear of the machine and are there any sort of vertical defects in the output, may be difficult to spot, kinda looks like the text is stretched in some places and condensed in others. Running a maintenace report output should work for that, as well as just running the drive from the service mode. Also run the duplex clutch tests from the engine routines, could be a fried clutch.

[Gab]

Client uses high quality paper
When making 1-sidd copies no sound and everything looks ok
When making 2-sided copies i had paper jam (code 508) at every copy. Not a single 2-sided copy made.
My experince tells me sensor failure (propably registration sensor, jam code 508). But i swapted all the convey unit and had had the exact same paper jam.
i used convey unit from taskalfa 5501 and 3501 (tried wtih several) . Are they suitable for 4500i? Machine is olivetti brand.
Anyway i will try again with convey swap. but if i fail i try to replace sensor from other machine. Also with the last convey unit i swapted had problems with message "close right cover" .

[AlaskaCopyTech]

When you say you replaced an exit assembly do you mean you replaced the exit assembly or the duplex unit. I would run a load check in service mode (as was recommended above) and if replacing the duplex unit doesn't work you may want to look the jam code up in the service guide to see what sensor it is as it may be going out. If that's not the case, and you confirm that by running a copy through sensor check, then I would follow the parts recommended on the jam code in the service guide.

[Gab]

I replaced duplex sensor without any result

[AlexandruMG]

Hi Gab,

If your machine has arround 1000k printed take a good look at the feed drive unit. From experience i can tell you on this drive unit are some clutches who gets damaged. It is verry simple to identify if you have problem with this drive because when that clutches get damaged, you will see some red powder or oxid under the drive.
You can check connector from conveying unit and machine and finally replace engine pwb.

Good luck!

[Samanator]

Just FYI, the part numbers for the convey units for the 3500i and 3501i are different from the units for the 4500i/5500i and 4501i/5501i. That tells me they are not the same.

I have learned the hard way to look part numbers up before changing parts from models that seem to be the same. A quick look in the book might save you time.

[tmaged]

Just FYI, the part numbers for the convey units for the 3500i and 3501i are different from the units for the 4500i/5500i and 4501i/5501i. That tells me they are not the same.

I have learned the hard way to look part numbers up before changing parts from models that seem to be the same. A quick look in the book might save you time.

The 35ppm uses clutches for duplex and the 45/55ppm use motors for duplex.

[Gab]

Is this the board that controls duplex (before main PWB)?

[nathicana]

Don't buy a board until you look at this:

Jam 0508 troubleshooting guide.pdf