Performing Hardware Maintenance

Switch Administration

••Holding the new power supply module by its handle (see Figure 4-16), carefully insert the module into the power supply opening until it engages the backplane and is flush with the back of the ZX-250r.

Figure 4-14 Rear view of ZX-250r with single power supply module

T• Using a medium-size, flat-blade screw driver, secure the power supply module to the chassis by tightening the holding-screw at the lower left corner of the power supply module (see Figure 4-13and Figure 4-15).

Q• Connect the power cord to the power supply module. The new power supply is ready to be turned on.

4.9.14Removing a Power Supply Module (SmartCell ZX-250r Only)

The following instructions are for the SmartCell ZX-250r only.

The power supply modules for the ZX-250r are hot swappable, which means you can install or replace a power supply module while the other power supply and the ZX-250r are operational. Because of this, you may be working with a device that is connected to line voltage. Exercise extreme caution when performing this task.

s• Turn off the power switch on the power supply module to be removed. ¢• Remove the power supply module’s power cord.

••Locate the power supply module’s straight-head holding screw at the lower left corner of the power supply module (see Figure 4-15).

4-42 SmartCell ZX-250 User Guide

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Cabletron Systems manual Removing a Power Supply Module SmartCell ZX-250r Only