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Installation Guidelines
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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:
–
–
–
For the switch commands for displaying the available power budget, see the Catalyst 3750-X and
3560-X Software Configuration Guide.
Do not operate the switch with one power-supply module slot empty. For proper chassis cooling, both
Caution
module slots must be populated, with either a power supply or a blank module.
Blank faceplates and cover panels serve three important functions: they prevent exposure to
Warning
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
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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.
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Make sure that all power supply and fan modules are securely seated before moving the switch.
Do not reach into a vacant slot or chassis while you install or remove a module or a fan. Exposed
Warning
circuitry could constitute an energy hazard. Statement 206
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning
Statement 1030
If a Cisco external power system is not connected to the switch, install the provided connector cover
Warning
on the back of the switch. Statement 386
Statement 371—Power Cable and AC Adapter
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
3-6
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.
Chapter 3
Power Supply and Fan Module Installation
OL-19593-03
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