Allied Telesis AT-SBx81CFC960 - Manual (Page 235)

SwitchBlade x8112 Chassis Switch and AT-SBx81CFC960 Card Installation Guide
Section II: Installing the Chassis 235
Replacing the AT-SBxPWRSYS1 DC Power Supply
To remove an AT-SBxPWRSYS1 DC Power Supply from the chassis,
perform the following procedure:
1. Turn off the circuit breaker to the AT-SBxPWRSYS1 DC Power
Supply.
2. Turn off the On/Off switch on the front panel of the power supply. Refer
to Figure 115 on page 178.
3. Use a #2 screwdriver to loosen the screw on the locking handle. Refer
to Figure 154.
Note
Do not lift the locking handle yet.
Figure 154. Loosening the Screw on the Locking Handle