Cabletron Systems SmartCell ZX-250, User Manual

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SmartCell ZX-250 User Guide 4-41
Switch Administration Performing Hardware Maintenance
4.9.13 Adding a Power Supply Module (SmartCell ZX-250r Only)
The following instructions are for the SmartCell ZX-250r only.
Figure 4-13 Rear view of a ZX-250r redundant power supply module
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NEVER pick up the SmartCell ZX-250r by its power supply handles.
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•
Remove the two Phillips-head screws that hold the power supply module blank in place, and
carefully remove the blank (see Figure 4-14).
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Make sure that the power switch on the new power supply module is switched to off. Also, remove
the power cord if connected.
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At this point, you have direct access to the power bus on the backplane, which
carries potentially hazardous voltage. DO NOT insert hands into the power
supply opening. DO NOT touch the backplane. DO NOT insert any metal or
conductive objects into the power supply opening.
Holding Screw Power Block Assembly
with Fuse Holder
Lamps
AC Power OK
DC Power OK
Line:
100 - 125V ~ 3.2A
200 - 240V ~ 1.6A
50/60Hz
CAUTION: For
continued protection
against risk of fire,
replace only with same
type and rating of fuse.
4A, 250V FAST ACTING
Handle
ZX-RPS