1 of my tech's has 2 MP 6001s at the same account that are tearing a tab in the center lead edge of the originals. He has replaced the pick up roller, feed belt, and the separation roller.He has never seen the problem occur, but the customer always has samples.This has been going on for over a month now. If anybody has seen this problem or has any ideas please let me know. I am embarking on the almost 2 hour drive to their location, and will check back when I get there if I can get a wireless signal in their location.
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I induced this problem on myself once. I was trying to extend the PM life of the ADF because I had a customer who did almost exclusively 1:1 copying - Bummer to have the machine run 500k looking great, and the ADF to jam at less than 100k (and squeal like a pig after 20k)
Since most of the failures seemed related to the "sponge with a hard-on" sep roller I tried replacing it with various others. Most notably the AF032050 and AF032080, and even a few I had leftover from the old Toshiba's when we used to be Lanier.
Initial results were usually either a total misfeed or originals bent down and torn where the new sep roller hits it. Too much traction from the new materials and / or slightly smaller diameter of the roller.
I spent a lot of time futzing with different rollers and bending things to get the sep height correct, then more futzing time with the torq limiter to reduce the force by about 20% to make it work.
Then the back of the feed belt would wear down to the reinforcing cords and start slipping. Mod in a B3512222 "toothed" belt and roller system and its back to nofeeds or multifeeds, but no happy medium. After that I got tired of wasting time on the project.
Anyway... I learned a lot about what it takes to feed with that belt system. I think you have 1 of 2 problems.
Either something is bent and the sep roller is sitting at the wrong height (too high or too low will both cause this) Or, more likely, the torq limiter is stiff or locked up.73 DE W5SSJ -
It's probably the torque limiter next to the separation roller A2936399Comment
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The torq limiter has been replaced. the frustrating thing is i stood there and scanned 100 pages and only 4 tore. I then went through the whole thing cleaning and checking everything in the path. After all that I ran 2000+ without a single problem. 2day later the problem is back. Unfortunatley My territory is well over an hour away.Comment
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I found that the originals are tearing on this little bubber pad in front of the sep roller. Replaced the pad with no change. Tried removing the pad ,but then the doc. feed starts jamming.Comment
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Check the separation roller shaft. It has an anti-slip (one way clutch bearings). The bearings could be worn which would cause slippage.Comment
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Torque limiter has aready replace. the machine only has 89k pages through it. The adf has 99k on it. The PM clycle is I believe 150K for the ADF. The tear is the same size as that sep pad in front of the Sep. Roller. This one realy has me stumped.Comment
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I see what you are talking about. I'll check that. Would that wear out on both machines at the same time, with less than 100k on the adf?Comment
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With less than 100k, and on both machines, doubt the part would be worn, but hey as I have seen before, anything is possible. I know you said most of the time the problem doesn't happen when you are on-site. Maybe an operator issue, or possible bad paper.Comment
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PM Table (once you find it) says the pickup, feed, and sep are 600k original replacement items. I'm just not buying that. The older machines were always 80k replacement, and that's only if you could put up with the sep roller squealing.
The only thing I know that can tear originals like that is if the sep roller was back spinning even when it was just in contact with the belt - paper hitting the roller at any significant angle (i.e. other than the top sheet, or maybe the top sheet if things are out of alignment) would be directed downward and tear - thats what was happening to me when I was playing with different rollers. That takes us back to bad rollers or torq limiter and it's very unlikely you have replaced a bad part with a new bad part with the same fault, but stranger things have happened.
I've had several people lean on the ADF tray hard enough to bend them. In particular I suspect a very well endowed female operator needed some additional lift - but that's annother story...
If nothing is bent, you may want to try using real rubber sep rollers (AF032050 - you'll also need a spacer. This roller is a little narrower than the original) They wear out faster than the originals, but I've used them before for customers copying thin NCR receipts.
My only other suggestion is to cut a piece of mylar to build a ramp up onto the sep roller. It shouldn't be necessary, and I forsee other problems, but it might help.73 DE W5SSJComment
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