Yes it was guess that the main board had been swapped out. Yes the ink is all stamped Tektronix. The picture was portrait. Opening the cover I see nothing scraping on the silver drum. I will see about the test sheet. I know we did several but most ended up in the trash. Taking the bottom...
We just bought a used 840 printer on ebay. When we fired it up the screen that came up said it was an 850N although the outside says 840. We had planned on it duplexing and it doesn't appear to do that...but the biggest problem is the printed image..the top half of the page prints fine but the...
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