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Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-01
Chapter 3 Power Supply and Fan Module Installation
Installing an AC Power Supply
• You can remove and replace the power supply when the switch is connected to an XPS-2200 without
interrupting normal switch operation. After a delay of about 3 seconds, the switch power supply
automatically provides power, and the XPS-2200 is available to power other devices.
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.
• When replacing the 1100-W or 715-W power supply, verify that you are using the correct power cord
(CAB-16AWG-AC, only in North America).
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
Statement 371—Power Cable and AC Adapter
Installing an AC Power Supply
Step 1 Turn off the power at its source.
Step 2 Remove the power cord from the power cord retainer.
Step 3 Remove the power cord from the power connector.
Step 4 Press the release latch at the right side of the power supply module inward and slide the power supply
out. (
Figure 3-6).