HP LaserJet 9050 - Software Technical Reference (External)

Cause Result
A break in the I/O stream occurred during send (for
example, the parallel cable was removed).
No update has occurred.
A power cycle occurred during the RECEIVING UPGRADE
process.
No update has occurred.
A power cycle occurred during the PERFORMING
UPGRADE process.
No update has occurred. Resend the update through a
parallel port.
A power cycle occurred during the INITIALIZING process. The update has been completed.
Print jobs sent to the product while an update is in process do not interrupt the update.
The following table lists possible reasons for the failure of a remote firmware update and the
corrective action required for each situation.
Table 2-7 Troubleshooting a firmware update failure
Reason for firmware update failure Corrective action
The .RFU file is corrupted. The product recognizes that the file is corrupted and rejects the update.
Download the file again and send the new file to the product. Download the file
from
http://www.hp.com/support/lj9050.
The wrong product is contained in
the .RFU file.
The product recognizes the printer mismatch and rejects the update. Download
the correct file and send it to the product. Download the file from
http://www.hp.com/support/lj9050.
The upgrade was interrupted. See Troubleshooting a firmware update.
A flash hardware failure occurred. Although it is extremely unlikely, the device might have a hardware failure. Call
technical support to address the problem (see the flyer that came with the
product for a local telephone support list).
NOTE All HP LaserJet products leave the factory with the latest available firmware version
installed. If a remote firmware update fails, the .RFU file must be sent over a parallel port
connection.
Printing print-ready documents from a command line
Documents in the following file formats can be printed by using a command line. That is, they do not
need to be opened in a software program that supports the file format (such as the Adobe Acrobat or
Acrobat Reader programs for .PDF files), but can be sent directly to the product using a command
line.
■ HP LaserJet Printer Control Language (.PCL)
■ Portable Document Format (.PDF)
■ Postscript (.PS)
■ Text (.TXT)
Use one of the following methods to print print-ready files to your product.
Table 2-6 Troubleshooting a firmware update (continued)
58 2 Software description
Software description