HP Color LaserJet 8500 Printer

Error Codes and Support

Error:

79 SERVICE {xxxx}CYCLE POWER

Error Description:

The firmware has detected a hardware failure within the formatter. This failure can be caused by defective EIO devices and communication ports {xxxx} Description 01{xx} = IO ASIC register error 02{xx} = Video ASIC register error 03{xx} = IDE ASIC reg

Solution:

1 Turn the printer off. Disconnect all communication cables and EIO cards. Turn the printer back on. 2 Run extended formatter diagnostics from the Service Mode Menu to troubleshoot the failure. 3 If the problem persists without the communications connected, replace the formatter board.


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