topic Pro-1000 missing PM channel after repeated cleanings, alignments; printhead replacement. in Professional Photo Printers https://community.usa.canon.com/t5/Professional-Photo-Printers/Pro-1000-missing-PM-channel-after-repeated-cleanings-alignments/m-p/469881#M16331 <P>I have owned the pro 1000 one year. It sat unboxed for roughly 8 months; as we use a pro-4100 for large prints and framing. I also have a pro-300, which has been perfect with no problems whatsoever. Problem is the pro 1000 was fine upon initial setup. For a couple months the prints were not as color accurate as the 300. Nozzle check revealed the PM channel missing. I tried EVERYTHING. Deep cleanings and alignments. Even bottom plate cleaning. After all this, there would be about two nozzle check patterns with PM grid just barely visible. Then after printing a picture, the would be nothing again. At this point I bought and installed a new printhead. The first check was a good pattern. After two pictures, nothing again. No PM grid visible at all. Plus I have shelled out a small fortune for printhead, new set of ink tanks; and a maintenance cartridge.</P> Thu, 28 Mar 2024 17:51:38 GMT RS-180 2024-03-28T17:51:38Z Pro-1000 missing PM channel after repeated cleanings, alignments; printhead replacement. https://community.usa.canon.com/t5/Professional-Photo-Printers/Pro-1000-missing-PM-channel-after-repeated-cleanings-alignments/m-p/469881#M16331 <P>I have owned the pro 1000 one year. It sat unboxed for roughly 8 months; as we use a pro-4100 for large prints and framing. I also have a pro-300, which has been perfect with no problems whatsoever. Problem is the pro 1000 was fine upon initial setup. For a couple months the prints were not as color accurate as the 300. Nozzle check revealed the PM channel missing. I tried EVERYTHING. Deep cleanings and alignments. Even bottom plate cleaning. After all this, there would be about two nozzle check patterns with PM grid just barely visible. Then after printing a picture, the would be nothing again. At this point I bought and installed a new printhead. The first check was a good pattern. After two pictures, nothing again. No PM grid visible at all. Plus I have shelled out a small fortune for printhead, new set of ink tanks; and a maintenance cartridge.</P> Thu, 28 Mar 2024 17:51:38 GMT https://community.usa.canon.com/t5/Professional-Photo-Printers/Pro-1000-missing-PM-channel-after-repeated-cleanings-alignments/m-p/469881#M16331 RS-180 2024-03-28T17:51:38Z