User's Manual

HP Designjet T Series — Service Manual 3-65
Service Utilities
If the Usage Counter information cannot be read, the Front Panel will display
“Unable to get usage counter”. This could be a possible Firmware error. In
this case, make sure you have the latest version of the Firmware.
4 If the utility exits correctly, OK will be displayed on the Front Panel.
5. Diagnostic Print
The purpose of this Service Utility is to print the Diagnostic Print in order to
identify Print Quality problems. Information regarding the Diagnostic Print is
located in Chapter 6, Print Quality. Specifically:
The procedure to make a Diagnostic Print can be found at
Printing the
Diagnostic Print on page 6-5.
The procedure to make an Advanced Diagnostic Print can be found at
Printing the Advanced Diagnostics Print on page 6-12.
Additional print quality information such as troubleshooting and corrective
measures can be f
ound at
Print Quality on page 6-1.
6. Set Date and Time
The purpose of this Service Utility is to set the internal clock of the Printer.
Perform the Set Date and Time utility as follows:
1 In the
Service Utilities submenu, scroll to Set Da
te and Time and press
OK.
2 The Printer will display the current time and the new time. Use the Up and
Down keys to go through the digits and press the OK key to go to the next