Here is what they sent me via email.
Media Sciences inks for the Xerox Phaser 8500/8550/8560/8560MFP printers and Xerox brand inks will occasionally fail to slide down the chute properly and cause any of the listed errors such as “Out of Ink” or “Low Ink” when there is more than 25% of ink left and 09,XXX.XX error codes. This is not a non-Xerox ink issue only. Built into the diagnostics is a method for recovering from this error. This procedure will not work for incorrectly installed ink or hardware issues. To perform this you will need approximately five minutes and you will need to enter the diagnostic mode on your 8500/8550 printers or service diagnostics mode on the 8560/8560MFP printers. Revised 11/27/2007
Xerox Phaser 8500/8550 Printers:
1) While pressing and holding down the Up Arrow button, press the OK button to display the Service Tools Menu.
2) Scroll using the Down Arrow button to Enter Diagnostic Mode and press OK button. The printer will appear to shut down. It is restarting. Give it time. It may take up to three minutes. Press OK button at the Caution prompt to initialize the printer.
3) At Test: 00 no test selected, scroll using the Down Arrow button to Test: 75 Clear Fault History or Clear ISC Fault, press OK button to run the test and press OK button at prompt to confirm. The test will only take a few seconds to complete and return back to the current test.
4) Scroll up to perform the same procedure for Test: 76 Clear PS NVRAM, Test: 77: Clear PE NVRAM and Test: 78 Set PE NVRAM to defaults.
5) Press the RED C button to return to the Test: 00 no test selected, scroll using the Up Arrow button to Test: 01 Exit Diagnostics, select OK button to exit and OK button to return to customer mode.
6) The printer should restart, warm up and perform as normal. Should you have further issues please call the service department at 888-223-2785.
Enjoy
