Xerox 4500 ps eth 用户手册

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Appendix Section
Xerox 4500 PS ETH, Inst. &  Operator's Guide
186
Appendix C.4 Problem Determination
What action do I take if a communication error occurs during 
the
upgrade process?
If the microcode download fails while you are using the TCP/IP boot
server, power the PrintServer off and back on again.