User's Manual

Table Of Contents
SPEEDLAN 8500 Series Installation and Operation User Guide
AppendixB-4 Appendix B Startup LED Patterns
Final Startup
If the IDU passes the Initial Startup and finds a good Interface 0, then the IDU will enter the Final Startup Phase. If any of
the interfaces that were found require Extended Memory (i.e., memory above 1 megabyte), then the memory will be
allocated and tested. If there is a problem with Extended Memory, then the IDU will halt with the following LED display:
If Extended Memory passes the tests or is not needed, then the IDU will shut all LEDs off and then pulse the PC
Motherboard’s speaker connector at least once per second.
1% 5% 10% 20% 40% 60% 80% 100%
Bad or Deficient Extended Memory ON ON