8. Tighten the Phillips screw on the power supply retaining clip.
Note - As you tighten the screw,the lower end of the retaining clip presses on
the front of the power supply.Fully tightening the Phillips screw ensures that the
power supply is properly seated in its bay.

6.2.3 What Next

Verifycorrect operation of the power supply by checking the fan and LED indicators
on the power supply.You should hear the fan start spinning and two green LEDs
should light within three seconds of completing a hot-plug installation (or after
restoring power to the system).
For more information about the power supply LEDs, see:
Section 7.12.1.3 “Power Supply LEDs” on page 214
6.3 How to Remove the Fan Tray Assembly

6.3.1 Before You Begin

Complete these tasks:
Section 2.1 “How to Power Off the System” onpage 54
Section 2.4 “How to Position the System for Service” on page 60
Section 2.6 “How to Remove the System Cover” on page 65
Section 2.8 “How to Avoid Electrostatic Discharge” on page 69

6.3.2 What to Do

1. Loosen the two captive Phillips screws securing the fan tray assembly to the
chassis.
164 Sun Enterprise 220R Server Service Manual ♦January 2000, Revision A