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Cisco ME 3400E Ethernet Access Switch Hardware Installation Guide
OL-16447-01
Chapter 3 Installing and Removing AC- and DC-Power-Supply Modules
Power-Supply Module Installation
Tools and Equipment
Obtain these necessary tools and equipment:
• Ratcheting torque screwdriver with a number-2 Phillips head that exerts up to 15 inch-pounds (in-lb)
of pressure.
• Power-supply power-cord retainer in the switch accessory kit.
Installation Guidelines
Observe these guidelines when you install a power-supply module:
• Do not force the power-supply module into the slot. This can damage the pins on the switch if they
are not aligned with the unit.
• A power-supply module that is only partially connected to the switch can disrupt the system
operation.
• Turn off switch power before you install the module.
• Verify that you are using the correct power cord.
Warning
Blank faceplates (filler 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 and faceplates are in place.
Statement 156
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
Do not work on the system or connect or disconnect cables during periods of lightning activity.
Statement 1001
Caution To prevent overheating and to maintain proper air flow, either a power-supply module or a blank cover
must be installed in each power-supply module slot at all times. Never operate the switch for extended
periods of time without either a power-supply module or a blank cover installed in each power-supply
module slot. (See Figure 3-5.) You can order the blank cover (part number ME34X-PWR-BLANK=)
from Cisco.