Cisco Systems OL-16447-01 Manual De Usuario
3-7
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
Step 3
Align the two captive screws with the screw holes in the panel. Use a ratcheting torque screwdriver to
torque each screw to 10 in-lb.
torque each screw to 10 in-lb.
Step 4
Connect the AC-power cord to the front panel power supply and to an AC-power outlet.
Step 5
(Optional) Snap the AC-power-cord retainer into place, and attach the plastic bushing to secure the
power cord (see
power cord (see
Figure 3-8
AC-Power Supply and Power-Cord Retainer in a Switch
Step 6
Turn on the power at the power source.
Step 7
Confirm that both the AC 1 LED and the PSU 1 LED are green. (If you can access the switch rear panel,
verify that the PSU OK LED is green.) See
verify that the PSU OK LED is green.) See
for a description of the power-supply module
LEDs. See
and
for system and power-supply LED
descriptions.
Removing AC-Power-Supply Modules
Step 1
Turn off the power at its source.
Step 2
Detach the power-cord retainer and the plastic bushing from the power cord.
Step 3
Remove the power cord from the power connector.
Step 4
Use a Phillips screwdriver to loosen the two captive screws that secure the power-supply module to the
chassis. One screw is on the lower right of the module, and the other screw is on the upper left of the
module.
chassis. One screw is on the lower right of the module, and the other screw is on the upper left of the
module.
Caution
Do not leave the power-supply slot open for more than 90 seconds while the switch is running.
Step 5
Remove the power-supply module from the power slot by pulling on the extraction handle.
Caution
To prevent overheating and to maintain proper air flow, either an AC- or DC-power-supply module or a
blank cover should be installed in both power-supply module slots at all times. Never operate the switch
for extended periods of time without either a power-supply module or a blank cover installed in the each
power-supply module slot. (See
blank cover should be installed in both power-supply module slots at all times. Never operate the switch
for extended periods of time without either a power-supply module or a blank cover installed in the each
power-supply module slot. (See
.)
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