I know this discussion ended long ago, but I was curious if anyone might be able to help me with a similar situation. I too received this error on my Designjet 800 and followed the links described in the thread to try and rectify the problem. When I removed the right cover to take a look at the service station, I found that the service station flag was not at a 45, but was closer to 90. When I reposition it, there is nothing for it to clip into to keep it at a 45. Is this normal? In the picture (http://www.computercarefiles.com/TWI_Docs/bpp90133/bpp90133-2.gif) on the forum, it appears that there is something at the top left for the clip to catch on, but that doesn't exist.
Any ideas or help that could be offered would be greatly appreciated.
Thank you.