User's Manual

HP Designjet T Series — Service Manual 2-29
System Error Codes - Full Descriptions
System Error: 79:YZ
Problem
Description:
Generic Firmware error.
Corrective Action: Try the following:
1 Switch the Power OFF from the back of the Printer and disconnect the Power
cord
. Reconnect the power cord and power On the Printer.
2 Check that the Printer has the latest Firmware version. If not, update the
Fi
rmware to the latest version.
If you see system error 79:04, see Appendix A: How to
troubleshoot SE 79:04 on page 2-33.
System Error: 79.1:YZ
Problem
Description:
Recoverable firmware error that does not stop the printing process.
Corrective Action: Try the following:
1 Switch the Power OFF from the back of the Printer and disconnect the Power
cord
. Reconnect the power cord and power On the Printer.
2 Check that the Printer has the latest Firmware version. If not, update the
Fi
rmware to the latest version.
System Error:
81:YZ
Initial checks: This error can occur because the printer has been dropped during
transportation, causing structural damage. Before continuing with the 81:YZ
troubleshooting, first look for structural damage.
To identify the structural damage, look for the following three things:
 Consistent 81:YZ error codes.
 Platen fingers rubbing on the roller surface, leaving black marks on the