Not sure if this will help but just recently had an IR 600 with some quality issues and moved it to a new room that no longer had commercial carpet and had a fully dedicated 20 amp outlet on it's own breaker...it prints perfectly EVERY time now...ain't that some sh*t.
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A good reason to remove the pretrans is to see if that's what's causing the problem, you either got to do some troubleshooting or just scratch yer ass and wonder what it could be.
Cheat the door, let it warm up and remove the corona, what's the worst that could happen?
Either it wraps on the drum or it don't.Comment
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I have had this happen on ir 550 and ir 600s The problem is the fan in the transport is turning to slow and won't help pull the paper down to the transport belts. Your sep corona will pull the paper down but you still need the fan at full speed to keep letter size from not hitting the drum claws. good luckComment
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I know all about troubleshooting procedures/ Poster replaced all the coronas /
if paper arch's with old and new corona= it is a machine end block issue (short)/ or a transport bed issue / or a frame grounding issue / or HVT - take your pick !
it is all about process of elimination**Knowledge is time consuming, exhausting and costly for a trained Tech.**
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I missed that part that he replaced the corona assemblies, I thought he just restrung them, sorry about that.
Yeah, at this point it's probably just trial and error. If the bed fan is working, I'm thinking HVT would be next.Comment
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Okay replaced the fan, seemed to help a little. I then pulled the red lead wires from the lower corrona block in the back that lead into the power supply and ran a copy, no change! I am thinking at this point that power supply is dead, although I am stumped how the image can even transfer to the paper with no charge on the lower corona! Gee willakers beav!
Back later to swap power supply for lower corona, more posting after that. Stay tuned!
KellyComment
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I am trying to remember the the red leads . tell me does the ac seperation cable go to the hvt block or to the ac seperation hvt if it goes to a plastic block in the back were all the wires go there are resistors that can blow out on you just take a ohm reading on them to compare. the clcs had this block but can't rember if the 550/600 used the block maybe a other tech can rember.Comment
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Nothing wrong with removing pre-transfer to test. I have actually seen bad pre-transfer corona assemblies drag down the A.C. used in separation. The lines that you get on letter...are they outside the image area on legal and thats why you don't see them? As stated earlier,because of grain legal/ltrr are stiffer in process direction. How many lines? Random lines?Random spacing?All the way through page?Letter when fed from all trays as letter? Duplex,lines on both sides?Post a picComment
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Okay, well it was the high voltage power supply going to the lower corona assembly. Swapped them and the copies cleaned up perfect.
Now if only I can get a handle on why this machine produces so much static on the paper!
Thanks all!
KellyComment
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Most static pron printers are in poor locations.
Static electricity is electricity that is not moving (static). Rubbing or separating of two different materials typically causes it. One of the materials will become positively charged and the other will become negatively charged. Usually, at least one material has high resistively, that is, non-conductive; the charge will remain on the surface of that material.
A Machine that is not grounded properly attributes to this cause ={poor discharge}
if your printer is on a rug, it contributes to the cause
using a heavy content of cheap recycled paper, causes dust buildup,dust buildup on moving rollers create static
changing of potential in copy process, creates static
Cold & Dry locations also contribute**Knowledge is time consuming, exhausting and costly for a trained Tech.**Comment
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I can attest to the rug/carpet thing. Moved an IR600 to a tiled floor from a carpeted (commercial carpet) and it solved some quality problems which I believe had to do with charge issues.
I'd recommend avoiding all types of carpet areas. I think these kinds of machines should also have their own breaker. Or at least put an anti-static mat down...if such a thing exists.Comment
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