Sun Microsystems Enterprise 250 Owner's Manual page 190

Figure 8–6
3. Push on the power supply handle to firmly engage the connectors with the
power distribution board.
Press firmly to engage the power supply connectors. If you are "hot-plugging" a
redundant supply, take care to avoid jarring or shocking the system.
Note -
disengage the supply in rapid succession. Always remove a supply completely
before reinserting the same supply or a replacement supply. Rapid seating and
unseating of power supplies will result in false error conditions.
4. Tighten the two captive screws that secure the power supply to the chassis.
5. Connect the AC power cord to both the power supply and an AC power outlet.
Secure the cord to the rear panel with the strain-relief tie-wrap.
What Next
Verify correct operation of the power supply by checking the fan and LED indicators
on the rear of the supply. The fan should start spinning and both LEDs should light
within three seconds of completing a hot-plug installation (or after restoring power
to the system).
For more information, see:
Sun Enterprise 250 Server Owner's Guide ♦ Revision A, June 1998
156
When installing a "hot-pluggable" power supply, do not engage and