User's Manual

HP Designjet T Series — Service Manual 2-43
Appendix A: How to troubleshoot SE 79:04
 The printer information pages (either printed and faxed or obtained
through the Embedded Web Server)
 The System Error detailed information (it can be obtained by pressing
CANCEL + Down)
 The printer logs. In order to obtain the printer logs, check the
corresponding appendix . See
Appendix C: Obtaining printer logs on
page 2-46.
Front panel displays 79:04 while printing
While printing a single job
The error happens after a single job is sent. It’s easy to identify which job
that has pr
oduced the error, since every time that this same job is sent, the
error is replicated.
1 R
eboot the printer twice (after the first reboot, the printer will show the 79:04
s
ystem error again, since the printer will attempt to reprint the last job in the
queue, which is the one that caused the issue)
2 If y
ou are using an HP driver, update the driver to the latest version
3 Upgrade the printer’s firmware. Even if the c
urrently installed firmware
version is the latest one, re-install it. Send the job using different print
settings. The following ones can be helpful:
a T
ry sending the job without selecting a media profile in the driver
b Try changing the Image Quality settings
c If you are using the HP-GL/2 driver, try the option “Send job as bitmap”
d If you are using the PS driver, try using the HP-GL/2 driver instead
e If you are using the PS driver from an Adobe application (or any other
a
pplication that can handle PS), try changing the application’s print
settings so that the PS is generated as Raster.
4 T
ry the following Front Panel settings:
a Change the Print Language option in the Front Panel from “Automatic”
(
which is the default setting) to the language that is being printed (PS, HP-
GL/2, …)
b Que
ue = OFF
c Start Printing = After processing
d For PS SKUs, try changing the encoding setting (“Automatic” by default)
t
o Binary or ASCII
5 If you are using a 3rd party application that does not print through the HP
dr
iver, try modifying the printing workflow by:
a Using an HP driver
b Changing the settings in the application’s printing dialog
6 If you are using an accessory JetDirect card, try using the internal network
connector or U
SB (if available).
7 Escalate the issue, providing the following information:
 Unit information: S/N, P/N, accessories