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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-03
Chapter 3 Power Supply and Fan Module Installation
Installation Guidelines
•
The power supply is hot-swappable. In some configurations, such as full PoE+ or power sharing
mode, removing a power supply causes powered devices to shut down until the power budget
matches the input power of a single power supply. To minimize network interruption, hot swap the
power supply under these circumstances:
–
The switch is connected to an XPS 2200 and sufficient power is available.
–
The switch is in StackPower mode and sufficient power is available (Catalyst 3750-X only).
–
The switch is powered by other switches in a power stack, and no active backup is in progress.
For the switch commands for displaying the available power budget, see the
Catalyst 3750-X and
3560-X Software Configuration Guide
.
Caution
Do not operate the switch with one power-supply module slot empty. For proper chassis cooling, both
module slots must be populated, with either a power supply or a blank module.
Warning
Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, front covers, and rear covers are in place.
Statement 1029
•
The switch supports hot swapping of a fan module. When replacing a fan, you should complete the
replacement procedure within 5 minutes to avoid overheating the switch.
•
The switch continues to operate when there is one failed chassis cooling fan. If one fan fails, the
switch sends an error message. If a second fan fails, the switch sends an error message, writes a
failure log to flash memory, and shuts down.
•
Make sure that all power supply and fan modules are securely seated before moving the switch.
Warning
Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
circuitry could constitute an energy hazard.
Statement 206
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
If a Cisco external power system is not connected to the switch, install the provided connector cover
on the back of the switch.
Statement 386
Statement 371—Power Cable and AC Adapter
