I have a Noritsu D1005 that started showing yellowish lines across all prints. When doing a nozzle pattern check, there are severe pattern breaks on at least two sections. I have done many head cleanings but the nozzle check looks the same. In fact, after coming back to it after a day the two sections with the worst breaks in pattern are not showing up at all. I am assuming that there are some clogged nozzles and would like to try and perform a power head cleaning if possible, but I am not sure how to do this. Are there any other options for cleaning the print head other than the standard head cleaning?