MX-M350 AND MX-M450 jamming
These 2 models (almost identical, of course) are both jamming when duplexing. They seem to do fine on single-sided. I have replaced the turnover units (paper-reversing unit, whatever it's called) in both of these, and cleaned every grey feed roller in the paper path. Does not seem to be a finisher issue, does not seem to be a fuser issue. Ideas? Thanks. I was thinking maybe it's the little gate/spring on the end door, someone also told me they think that whole end door unit can also warp from heat.
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The most common cause of duplex jamming I've seen is a broken tooth on the reverse gate ( p/n PGIDM2077FCZ2 figure 2 item 1) at the top of the left door. Also I've seen the doors warp over time with the duplexer hanging on it. For me usually this caused general jamming, not just duplex. Hope this helps.I know I should be ashamed of myself. Strangely though, I am not. -
What jam codes are you getting? This will help big-time.Comment
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How many copies on the machine? I have had the sensor at the top center of the duplex unit get very dirty and cause intermittent jams. It is a pain to get to (have to take the duplex almost completely apart). It seems to attract a lot of dirt and dust for some reason.
Good luck.
BilComment
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Jam codes? =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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About 600,000 copies on each machine. Jam codes - AINPD_N and APPD1_S. Thanks for the replies thus far, my delay in response is due to business in the field.
I am heading out in a few to these machines with the gate unit in hand from another machine here in the shop. I didn't see any missing teeth from the gate on the jamming machines, but i'm thinking maybe the spring is streched a little. Will also clean above-mentioned duplex sensor.Last edited by jasonofx; 02-16-2010, 07:27 PM.Comment
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dirty/dragging AINPD sensor lever.
also, if these units have saddle stitch finishers attached, make sure they are level and aren't putting outward pressure on the side door of the machine.Comment
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Thanks, i'll check that sensor tomorrow. These don't have saddle-stitch finishers, just the little crappy ones that hang on the right hand side. Funny enough, i got another service call for one of these today (we have 100 or so out in the field) that is duplex jamming. I took the duplex unit off of it, cleaned the sensors and rollers, checked the actuators and fuser, and replaced the gate on the top of the left door, and it seems to be jamming in the reversing unit
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The AINPD_N and APOD_S fits with duplex jamming and jamming on face down delivery to the left. You'll see hard lumps of toner adhered to the gate and warping. =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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Sweet, i am taking 2 new gates with me to the problematic machines tomorrow, hope this is what i find. I will also clean all rollers/sensors/actuators. Might clean up the old gates or just replace them. I'll repost afterwards.Comment
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The toner lumps can be scraped off, but the warping is difficult to fix. After a few attempts with a heat gun, I gave up and just replace them. Good Luck. =^..^=If you'd like a serious answer to your request:
1) demonstrate that you've read the manual
2) demonstrate that you made some attempt to fix it.
3) if you're going to ask about jams include the jam code.
4) if you're going to ask about an error code include the error code.
5) You are the person onsite. Only you can make observations.
blackcat: Master Of The Obvious =^..^=Comment
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That sensors actuator just in the duplex unit (AINPD) where the paper goes in was prone to having left over plastic from the mold and would cause the actuator to stick down just a hair to long. I would push on it with a little screw driver and when i released it some times it would stay down for a extra half a second and then pop up. After filing the leftover mold off problem solved. You would see lots of AINPD_S in the log.
On these machines if you get jamming in duplex or left side paper exit and the machine has around 400-600k i would look at replacing the entire turn over unit. Lots of plastic and heat up there. I find the paper path gets all gummed up with dirt and toner, things warp and the rollers get dried out and baked.Evil will always triumph because good is dumb.Comment
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You said you replaced the delivery turn over unit in a couple so this won't help much for those machines. I just finished on an M455 with AINPD_N codes. Paper was going into or under the reverse gate when duplexing or exiting to the left tray. This was due to the paper not clearing the gate before reversing direction.The paper did not travel far enough to the right before changing direction. I put extra tension on the 2 actuator arm springs in the turn over unit (just beyond the fuser). Also, I cleaned up some kind of residue that had built up in the paper path of the turn over unit. The fan draws toner and dust up into that area. I believe it could have been slowing down the paper travel. Anyway, it seems to be working fine now.Comment
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i usually find that with the ainpd codes the sensor is actualy bad. it is very easy to replaceComment
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