Main Logic Board Jumpers - Sun Microsystems Ultra Enterprise 450 Guia

Main Logic Board Jumpers

The following information supersedes the information presented in the section
"About the Clock Mode Select Jumper" in the Ultra Enterprise 450 Server Owner's
Guide.
Contrary to the table in the section, the clock mode select jumper (J2701) is now
used on the Ultra Enterprise 450 server main logic board (501-5270).
Set the clock mode jumper shunt at address J2701 to correspond to the speed of your
UltraSPARC II CPU module. Verify that the jumper setting is correct before starting
the system.
Shunt on
Jumper Pins 1 + 2 Selects
J2701 Correct clock
mode for
UltraSPARC II
250- and 300-
MHz CPU
modules
1. Factory setting for main logic boards shipped without CPU modules installed.
Shunt on Default Shunt
Pins 2 + 3 Selects on Pins
Correct clock 1 + 2
mode for
UltraSPARC II
400-MHz CPU
modules
Ultra Enterprise 450 CPU Module Guide
1
Signal Controlled
UPA_RATIO2
1-5