Question about Ricoh A3 Gel GX7000 InkJet Printer
It's not the paper actually misfeeding in the printer, but appears to be the print head causing the issue. The print head assembly tries to make a fast move on the rails and comes to a screeching halt before going back to what it previously was doing. It is akin to the print head either losing it's place from the encoder strip or over-taxing the CR (carriage return) system by over-voltage/over-current. The print head assembly rides with what appears to be two "oil-lite" type bushings on a smooth steel rail on the back side and a simple Teflon tab on the rail on the front side. I've cleaned the encoder strip on several of these printers and sometimes that is the culprit. More often than not, cleaning the encoder strip doesn't help. The print head still jams on the rails. I've cleaned and polished the back rail, cleaned the bushings and the surrounding areas, cleaned the encoder strip sensor at the back of the print head assembly and none of this shows improvement concerning the print head jamming. I don't have any new spare parts, but am more than willing to find some, to keep some of these workhorses alive a while longer. Some of these Ricoh 7000 printers have run over 200,000+ 8-1/2" x 11" sheets without this issue. Some run less then 30,000 and these jams appear. I don't know what the MTBF is for these printers, but it varies wildly in practice. Anyone have an idea for a solution for these print head jams, I'm more than willing to listen. You can also contact me directly at curtiswright at charter dot net. Thanks in advance!
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Posted on Jan 02, 2017
do not use ohp film in this device as it will jam due to the use of optical paper sensors unless your ohp has a paper backing. you can set up the bypass tray for thick paper type to increase fuser temp to get better fusing etc
Posted on Sep 16, 2009
sc491 is a high voltage output error. Combined with your jamming issue, it sounds like a possible electrical problem somewhere. A good first step is to turn the machine off and unplug it, then take off the covers and reset any connections or cables you can get to.
If the problem persists, you should have a service technician take a look at it because it might need a board replaced.
Posted on Jun 05, 2010
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