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Diagnostic Tests and Utilities
HP Designjet 4000/4020 Printer Series Service Manual
4 Once the Ink Supplies information is obtained, it is displayed on the Front
Panel. Press any key to exit.
If any part of the Acumen information is invalid, the Front Panel will display
System Error Code 74:00. For more information on troubleshooting this
error code, refer to Page 2-20.
5 Once the process is completed, OK will be displayed on the Front Panel.