How to troubleshoot the 79:04 System Error 33
Troubleshooting
Also, there are a set of workarounds and short term solutions that can be tested in order to get the customer
up and running in the shortest possible time:
1. Send the job using a variety of different settings. Many times, the issue is caused by a combination
of the job contents combined with some specific setting(s).
2. If the customer is sending the file directly to the printer, try using the HP driver instead
3. If the issue is occurring when printing through the HP PostScript driver from an application with PS
passthrough, try changing the options in the application so that it prints PS as raster (the option is
typically located in the “Advanced” options of the application’s printing dialog).
Data related SE79:04
HP Designjet printers have Hard Disks and non volatile memories that contain data bases and files that
can be modified with user data. Some examples include:
• The printer’s queue
• The hard drive partitions that contain user jobs
• The data base that stores the printer settings
• The data base that stores accounting information
Some of this data is accessed by the printer at start up, and some others are accessed as needed.
If any of this fields contains corrupt data or data with characters or values that cannot be correctly
processed by the printer, a 79:04 system error may occur.
Possible symptoms
There are two different types of symptoms for data related 79:04 system errors:
1. When the corrupt data is accessed during start up:
a. The printer will display a 79:04 during the start up process
b. Switching the printer off and on again will not solve the issue. The printer will continue display-
ing the 79:04 system error until the corrupt data has been cleared through a service procedure
2. When the corrupt data is accessed during normal printer operation
a. The printer will start up normally
b. When the data is accessed (for example while printing, while navigating the queue or when
changing some settings), the printer displays a 79:04 system error
c. The printer can reboot normally
d. When the data is accessed again (typically, under the same conditions as in step “b”), the
79:04 system error is displayed again
Solutions and workarounds
Many times, data related 79:04 errors are resolved by means of hardware intervention. Since data is
stored in physical components (RAM, EEROM and Hard Disk), replacing these components with new ones
which are empty usually solves the problem. However, there are quicker and more effective solutions to
these types of errors:
1. Clear all information that has been introduced by the user using the standard tools available in the
printer:
a. Delete all jobs from the queue (from the Front Panel or the EWS)
b. Reset to factory defaults to clear the user’s configurations and calibrations
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