I have an issue with my 42” Designjet 500. Overall, it is low use and was working well. A few weeks ago, the printer started indicating that ink needed replacement even though the ink cartridges were at least 75% full. After many ink cartridge replacements, we replaced the ink supply station. After the ISS replacement, we discovered that we could insert only three ink cartridges at a time, we tried all combinations of placing colors into the ISS in different orders and every time, the same result occurred: the printer rejected the cyan and magenta cartridges. After several attempts of applying new cartridges with no success, the printer then started showing error code 22:10. We then replaced the Interconnect board and the interconnect cable, both have produced no positive result and are still showing 22:10. We have cleaned the entire printer thoroughly.
Despite replacing three parts, the printer remains completely out of commission. How do I remedy this issue? Buying more and more replacement parts is not really what we are trying to do, we just want something that will actually fix the issue.