Removing And Installing The Pems On The Cisco Mds 9506 Director; Removing An Ac Pem; Removing A Dc Pem - Cisco AJ732A - MDS 9134 Fabric Switch Installation Manual

Removing and Installing a Power Supply or PEM
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .

Removing and Installing the PEMs on the Cisco MDS 9506 Director

For instructions on connecting the cables to the PEMs, see the
Note
on page
The Cisco MDS 9506 Director uses PEMs to provide an input power connection on the front of the
chassis. In addition, the PEM provides current protection, surge and EMI suppression, and filtering
functions. An AC PEM is required for each AC power supply, and a DC PEM for each DC power supply.
The PEM that is on the left when viewed from the front of the switch (PEM 1) connects the site power
source to power supply 1 (upper power supply); the PEM on the right (PEM 2) connects the site power
source to power supply 2 (lower power supply).
You need a flat-blade or number 2 Phillips-head screwdriver to perform these procedures.
Note

Removing an AC PEM

To remove an AC PEM from a Cisco MDS 9506 chassis, follow these steps:
Remove power from the PEM by pressing the power switch to off (0).
Step 1
Loosen the captive screws and pull the PEM of the chassis, supporting the PEM from underneath.
Step 2
If the PEM bay is to remain empty, install a filler panel over the opening and tighten the captive screws
Step 3
to 8 in-lb.

Removing a DC PEM

Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
To remove a DC PEM from a Cisco MDS 9506 chassis, follow these steps:
Ensure that all power is off by locating the circuit breaker on the panel board that services the DC circuit.
Step 1
Switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off
position.
Step 2 Loosen the captive screws and pull the DC PEM from the chassis, holding it by the edges.
Remove the cables from the DC PEM by removing the terminal block screws, and then removing the
Step 3
ring lugs from the screws. See
Cisco MDS 9500 Series Hardware Installation Guide
2-64
2-28.
Figure 2-35
Chapter 2
"Connecting the Power Supplies" section
for the location of the terminal block screws.
Installing the Cisco MDS 9500 Series
OL-17467-02