HP 510 Inkjet Large Format CH336A#B1K manual 7904

System Error Codes

System Error:	79:04
Problem	Firmware Error.
Description:
Corrective Action:	Try the following:
	„ Switch the Printer Off and wait a few minutes. Switch the Printer
	On again and check if the Error Code has disappeared.
	„ If the Error Code reappears, check for a new Firmware release.
	„ If the new Firmware release does not solve the problem, or if new
	Firmware release was not available, then contact the HP
	Response Center (or directly to the Division) supplying the
	following information:
	– Model and Serial Number of the Printer.
	– Firmware release of the Printer (use the Printer Information
	utility ⇒ Page 4-27).
	– The complete Error Code information, including the linefeed
	where the error occurred (use the Error Log utility to obtain this
	information ⇒ Page 2-5).
System Error:	81:01
Problem	Paper-Axis shutdown.
Description:
Corrective Action:	If this error code appeared but was NOT caused by a paper jam, then
	try the following:
	„ Perform the Paper Advance Test ⇒ Page 4-11.
	„ If the problem persists, replace the Encoder Disk Assembly.
System Error:	81:11
Problem	Paper-Axis shutdown (during the Paper Advance test).
Description:
Corrective Action:	Refer to Error Code 81:01.

HP DesignJets 500, 510 and 800 Series Printers Service Manual 2-17