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Appendix Section
Xerox 4500 PS TR
175
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
the actual microcode download using the "copy"-command.
Otherwise the printer drivers may interfere in the microcode
image sent to the Xerox 4500 PS TR implying serious problems. You
should use a generic/text printer driver when running Windows
environment and IBM NULL when running in OS/2.
6. Pay attention to the LED's on the Xerox 4500 PS TR front-panel. These
will now blink very quickly - one after the other. This is an indication of
the microcode download taking place.
7. After the download process (time will depend on the PC’s hardware)
the “PRT” LED will stay lit. The remaining LEDs will be off.
8. Your Xerox 4500 PS TR has now been equipped with a new microcode.
9. Power the Xerox 4500 PS TR printer off and back on for the new
microcode to become effective.
10. Press the test key in order to verify the new microcode level stated on
the test printout page.
Appendix B.2: Upgrading Microcode via TCP/IP Boot Server
The microcode can be downloaded to the Xerox 4500 PS TR using the
TCP/IP protocol TFTP:
1. Customising the BOOTP server data base access file
(BOOTPTAB file entry for the device with a bootfile parameter).
2. Customising the bootfile entry (customising the bootfile to indicate the
path to the microcode).
3. Power the printer off/on.
4. Validate the update microcode.