Cisco MDS9120 - MDS 9120 Multilayer Fabric Switch Installation Manual page 60

Removing and Installing Components
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Cisco MDS 9134 Switch has two hot-swappable power supplies and two hot-swappable fan modules.
The Cisco MDS 9124 Switch is shipped with one field-replaceable power supply and three fixed fans.
The Cisco MDS 9134 switch and the Cisco MDS 9124 switch support the new DC power supply.
This section provides the following information:
• Removing and Installing AC Power Supplies, page 2-29
• Removing and Installing DC Power Supplies, page 2-30
• Removing and Installing Fan Modules, page 2-32
Hazardous voltage or energy is present on the backplane when the system is operating. Use caution
Warning
when servicing. Statement 1034
Caution During this procedure, wear grounding wrist straps to avoid ESD damage to the switch.
Note Except for the Cisco MDS 9124 switch, all the the other Cisco MDS 9100 Series switches are supported
for operation with both power supplies and both fan modules installed, and with all fans working.
With two power supplies installed, if one power supply fails, the system can continue to function
normally on a single healthy power supply. However, the failed power supply should be replaced as soon
as possible to provide redundancy.
The fan modules are required to ensure proper cooling of the switches. See
Figure
Figure 2-20
DS - C4
8 - 300 AC
100 - 240
4 - 2 A
50 - 60
Hz
INPU T
OUT PUT
OK
OK
Power
module
Cisco MDS 9100 Series Hardware Installation Guide
2-26
2-22, and Figure 2-23.
Rear View of the Cisco MDS 9148 Switch
VA C
Fan
Fan
module
module
DS - C4
8 - 300 AC
100 - 240
VA C
4 - 2 A
50 - 60
Hz
INPU T
OUT PUT
OK
OK
Power
module
Chapter 2 Installing the Cisco MDS 9100 Series
Figure 2-20, Figure 2-21,
OL-21514-01