Okay got a KM 7045 that I'm now supporting for a customer... dealing with image quality issues, I got a new drum and put it in. I couldn't get anything out of the new drum other than ridiculously light prints, so I replaced the developer (the grid voltage was already at it's lowest possible value and I couldn't get the developer test to complete, so figured this was a good call). And I get the machine up and run test prints (forgetting that the grid voltage was already down to minimum). The prints come out black and get jammed/wrapped in the fuser. I clean out that mess, turn the voltage up and am getting good prints out of the machine. I run a few different tests off the glass and show it to my customer. He's happy and away I go. This was several weeks ago.
Friday, he calls me and says he can't get the machine to run collated sets. I figure this is a simple key-op setting thing (I had previously set it to default to collated sets and figure he wiped it out somehow). Sure enough, getting it to run collated sets is easy enough but he's been running for a while now and he's now got spots/streaking on his output. It's about 3/4 of the way down the page (closer to operator) and about an 1.5-2.0 inch wide running from lead edge to trail edge. They're intermittent, sometimes appearing as dots, sometimes as wavy patterns inside or outside of print areas, and there's one more recurring mark that seems darker and more defined than the others. I turned the grid voltage up, thinking that might help, it did but after you run 50-100 impressions, the stuff comes back.
Other things to know:
1. The machine is at a site where they're refurbishing an old building. Every time I come there it's a new place. While my customer does have a plastic tarp he puts over the machine, the running environment is far from ideal and the paper he's running is not in any better shape.
2. Other than replacing a broken fuser gear, the above stuff is the only work I've done to the machine. He is aware that it's an older machine with a lot of clicks on it, but doesn't seem to be too interested in getting a new machine.
3. Going to point #1, I did look at the filter and it was pretty dirty. I turned it around, but don't have a replacement one at hand.
4. I think the darkest spot may have to do with a small scratch I see on the fuser heat roller... it's about the right place but I don't think the frequency's right. Plus there would have the a ton of loose toner floating around, right?
Help?
Friday, he calls me and says he can't get the machine to run collated sets. I figure this is a simple key-op setting thing (I had previously set it to default to collated sets and figure he wiped it out somehow). Sure enough, getting it to run collated sets is easy enough but he's been running for a while now and he's now got spots/streaking on his output. It's about 3/4 of the way down the page (closer to operator) and about an 1.5-2.0 inch wide running from lead edge to trail edge. They're intermittent, sometimes appearing as dots, sometimes as wavy patterns inside or outside of print areas, and there's one more recurring mark that seems darker and more defined than the others. I turned the grid voltage up, thinking that might help, it did but after you run 50-100 impressions, the stuff comes back.
Other things to know:
1. The machine is at a site where they're refurbishing an old building. Every time I come there it's a new place. While my customer does have a plastic tarp he puts over the machine, the running environment is far from ideal and the paper he's running is not in any better shape.
2. Other than replacing a broken fuser gear, the above stuff is the only work I've done to the machine. He is aware that it's an older machine with a lot of clicks on it, but doesn't seem to be too interested in getting a new machine.
3. Going to point #1, I did look at the filter and it was pretty dirty. I turned it around, but don't have a replacement one at hand.
4. I think the darkest spot may have to do with a small scratch I see on the fuser heat roller... it's about the right place but I don't think the frequency's right. Plus there would have the a ton of loose toner floating around, right?
Help?
They call it "TECH MODE" for a reason. I have manual's and firmware for ya, course... you are going to have to earn it.
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