MP4000 ARDF JAM

[hmac]

Hello,

I have a jam in the DF of a MP4000. The jam occurs only with two-sided originals. The sheet stuck on the back, at the time of the back scanner.

The sheet is not to offend, it just stops and the wheels continue to rotate for about 20 seconds, then displays its jam. During it's 20 seconds I can open the hood, pull the sheet, or do what I want, DF continues to turn as it nothing had happened.

Firmware: OK
Wheels: OK
No foreign body in the DF
I clean all detectors

I can not find the fault!

[Polarbear]

Re: MP4000 ARDF JAM

Where is the page getting stuck? Is the original page damaged during the jam?

Sometimes the junction gate stick, that is supposed to open and let the page go to the middle roller set, which lets it feed back for the machine to be able to scan the rear side.

If it sticks partially open, the paper will collide with it, and the machine will still attempt to feed the paper, for the period you describe, until it times out and registers a jam.

When the junction gate sticks closed, the page would feed straight through as if it was a single sided copy, and as soon as the page lands in the lower part of the df, it will register a jam.

[Gift]

Re: MP4000 ARDF JAM

Where is the page getting stuck? Is the original page damaged during the jam?

That's a good question - hard to tell without knowing if the paper looks jammed or just seem to stop in the paper path for no reason.

[hmac]

Re: MP4000 ARDF JAM

That's a good question - hard to tell without knowing if the paper looks jammed or just seem to stop in the paper path for no reason.

The paper is not damaged. The sheet hangs at the back for the second scan, when it is at higher level of the rollers. She stops and the wheels continue to turn. Then jam.

[teebee1234]

Re: MP4000 ARDF JAM

What is the jam code?

[Llama God]

Re: MP4000 ARDF JAM

What is the jam code?

And is it the same jam code every time? I'd check the sensors in input mode.

[hmac]

Re: MP4000 ARDF JAM

And is it the same jam code every time? I'd check the sensors in input mode.

I tested all the detectors in Input Mode. It all work. I really do not understand!
The jam occurs randomly. But I notice that when I support slightly on the door of the ARDF jam occurs, even in single copy. And the leaves are located exactly in the same place when I jam the duplex.

So I check the door, detectors, and the guides are but I do not see anything unusual. Have you ever had this down?

tomorrow I will provide you with pictures of the place where the leaves are blocked!

[hmac]

Re: MP4000 ARDF JAM

What is the jam code?

Where do I see the code of jam?

[Llama God]

Re: MP4000 ARDF JAM

SP7xxx

[jonezy999]

Re: MP4000 ARDF JAM

Another question

Are there still originals left on the feed table to be scanned when the jam occurs or does the jam occur once the last original is scanned?

[Polarbear]

Re: MP4000 ARDF JAM

I tested all the detectors in Input Mode. It all work. I really do not understand!
The jam occurs randomly. But I notice that when I support slightly on the door of the ARDF jam occurs, even in single copy. And the leaves are located exactly in the same place when I jam the duplex.

So I check the door, detectors, and the guides are but I do not see anything unusual. Have you ever had this down?

tomorrow I will provide you with pictures of the place where the leaves are blocked!

Sounds to me like something is bent or out of alignment. We had someting similar and it turned out that the df was not sitting square on the scanner and some papers would get caught when leaving the slit glass area and entering the entrance of the df (next to the platen sheet). Re-aligning the df solved that.

It could also be that the entrance I mentioned above, is not equally wide on both sides, which could also cause misfeeds.

[Zeldaman]

Re: MP4000 ARDF JAM

Hi there!
Jam-problems occure often if the main-hinge of the DF "stay in the air", meaning if you make copies without the DF and then close it, the rear corner of the feeder is not completly down on the frame (-3 mm) then jams or dogears occurs. Take 2 thick washers beetwen the screws and springs on top of the hinge and oil all movable parts carefully. Good luck!
Greetings...

[jonezy999]

Re: MP4000 ARDF JAM

Hi there!
Jam-problems occure often if the main-hinge of the DF "stay in the air", meaning if you make copies without the DF and then close it, the rear corner of the feeder is not completly down on the frame (-3 mm) then jams or dogears occurs. Take 2 thick washers beetwen the screws and springs on top of the hinge and oil all movable parts carefully. Good luck!
Greetings...

Good trick you suggest here. Although I don't believe it will help this particular issue. You should start a new thread for most Ricoh ADF's. I don't think it's been mentioned here at CTN before.

[hmac]

Re: MP4000 ARDF JAM

Another question

Are there still originals left on the feed table to be scanned when the jam occurs or does the jam occur once the last original is scanned?

Yes there are still on the original tray. Here are photos of the jam.
Nouvelle image.JPGNouvelle image1.JPGNouvelle image2.JPG

[NeoMatrix]

Re: MP4000 ARDF JAM

Take the Platen glass out of the machine. (So you don't break it).

::: Facing the machine :::
Grab the document feeder main mounting frame from the left front corner and lift the document feeder until you bend or pop the darn ADF metal mounting frame back straight.

Place the glass back into position and check that the glass sits perfectly flat on every corner. If the glass piviots slightly repeat the above.