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Cabletron Systems ZX-250 Manual Do Utilizador

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SmartCell ZX-250 User Guide   4-41
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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
>"•mamV
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).
¢•
Make sure that the power switch on the new power supply module is switched to off. Also, remove 
the power cord if connected.
>"•mamV
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