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Removing and Installing Power Supplies
Book Title
4-10
Powering On the AC Power Supply
Perform the following steps to power on the AC-input power supply and confirm the
installation:
Step 1 Turn the power switch of the power supply ON (–).
Step 2 Verify that the green LED on the power supply front panel is on (see
Figure 4-1). This indicates that the power supply is on and is receiving AC
source power, providing +5, +12, and +24 VDC to internal components, and
showing that all internal voltages are within tolerance.
Step 3 Verify that the appropriate ATM switch processor PS0 and PS1 LEDs are green.
(See Figure 4-2.)
Step 4 Use the show environment command to display the power supply and system
status, as shown in this screen example:
Switch# show environment
Temperature: OK
Fan: OK
Voltage: OK
Power Supply#0 type: Astec, status: OK
Power Supply#1 type: Astec, status: OK
Switch#
If the LEDs or show environment command indicate a power problem or other
system problem, refer to the section “Confirming the Installation” in the chapter
“Installing the LightStream 1010 ATM Switch Chassis” and Figure 2-11 for
troubleshooting information.
Removing and Installing DC Power Supplies
This section provides removal and installation procedures for DC-input power supplies.
The LightStream 1010 ATM switch is configured to your order and is ready for installation
and startup when it leaves the factory. As your communication requirements change, you
might want to upgrade your system and add or replace a power supply.
The LightStream 1010 ATM switch DC power supplies (DC-input) support redundant hot
swapping. When two power supplies are installed, you can install, remove, or replace one
of the supplies without affecting system operation. When power is removed from one
supply, the redundant power feature causes the second supply to ramp up to full power and