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Chapter 4 Installation and Maintenance
Removing and Replacing a Power Supply Unit
Cisco SCE 1000 2xGBE Installation and Configuration Guide
OL-7821-05 4-15
Warning
Never install an AC power module and a DC power module in the same chassis.
Powering Down the Power Supply Unit and Disconnecting Input Power
The following sections describe how to remove power from an AC-input power supply and a DC-
input power supply:
• Powering Down an AC-Input Power Supply (on page 4-15)
• Powering Down a DC-Input Power Supply Unit and Removing the DC-Input Leads (on page
4-16)
Powering Down an AC-Input Power Supply
To power down an AC-input power supply to the SCE 1000 platform, complete the following
steps:
Warning
Make sure that the power supply unit is switched off before replacing it (NO hot-swap).
Note that one AC-input power supply can be running when the other power supply is being removed or
replaced.
Step 1 Place the on/off switch on the AC-input power supply in the OFF ({) position.
Step 2 Observe that the corresponding Power LED on the front panel turns off.
Step 3 Remove the cable from the AC-input power receptacle
This completes the procedure for powering down an AC-input power supply unit on a SCE 1000
platform. Proceed to Removing the Power Supply Unit (on page 4-16).