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Appendix Section
Xerox 4500 PS ETH, Inst. & Operator's Guide
182
Appendix C: Microcode upgrading
The PrintServer supports an online microcode upgrade facility permitting
the installation of revised product microcode.
Operation of this facility will be possible via Psinst32 and the TCP/IP boot
server.
CAUTION:
• • During the initial 20-30 seconds after the microcode
download, a failure (power off) will have fatal consequences,
because the code will be lost and the previously stored code
erased. If this happens, a basic code still remains in the
flash to allow redownload of code. But download can then
only take place via the parallel port.
• • You must always connect printer to PARALLEL port.
Appendix C.1: Upgrading Microcode via Parallel port
The PrintServer microcode can be upgraded via the PAR1 port by using a
PC containing the microcode in the shape of a file.
To download the microcode via the parallel port follow these guidelines:
1. Power the printer OFF and connect a PC to the PARALLEL port using a
centronics cable.
2. Power up the printer. When the session LED is lit, press the test key
shortly.
3. When the printer generates a test page with the message: “..Awaiting
microcode download”, the PrintServer is ready for download.
4. Type the following command at the PC's command-prompt :
"copy 0xxxxx.B80 lpt1 /b "
where "0xxxxx.B80" is an example of a firmware file.
1
NOTE:
If you are making use of printer drivers in connection
with your PC's centronics port, it is important that these
drivers are temporarily disabled while you perform
1
The suffix .B80 may be case sensitive depending on the operating system.