Prerequisites; Required Tools And Equipment; Steps - Cisco SRS Series Installation Manual

Prerequisites

The power shelf is installed and removed from the front (PLIM) side and plugs into the chassis power interface
connector panel. Although differences exist among the different power shelf types (AC Wye, AC Delta, and
DC), they are installed and removed in the same manner.
Installed
Prerequisites
Before performing this task, remove the upper grille on the front (PLIM) side of the chassis (if installed), and
power down and remove AC rectifiers (or DC PEMs) and the alarm module in the shelf you want to remove.
Remove the AC or DC power shelf wiring. See
Configuration Alarm Module
Configuration DC Power Shelf

Required Tools and Equipment

You need the following tools to perform this task:
• ESD-preventive wrist strap
• 1/4-in. x 6-in. long slotted screwdriver

Steps

To remove a fixed configuration AC or DC power shelf, perform the following steps:
SUMMARY STEPS
1. Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection
sockets on the front (PLIM) side of the chassis or a bare metal surface on the chassis.
2. Turn the shelf power switch, located on the front (PLIM) side of the chassis, to the OFF position.
3. For AC, at the AC service circuit breaker box open all associated equipment circuit breakers for shelf(s)
to be removed. Use the lockout and tag procedures per your local practices. Unplug the power cords from
the associated power shelves and remove. See
information.
4. Remove all power modules (three AC power rectifiers in an AC power shelf or three DC PEMs in a DC
power shelf) from the shelf you are removing.
5. Remove the alarm module.
6. Use the screwdriver to loosen the four captive screws (two on each side) on the interior of the power shelf
by turning them counterclockwise.
7. Use the screwdriver to loosen the two lever screws on the front panel of the power shelf by turning them
counterclockwise.
8. Pull the lever handles down with both hands and slide the power shelf slowly from the slot in the chassis.
After partially removing the power shelf from the chassis using the handles, grab both side of the power
shelf and slide the shelf completely from the chassis.
9. Set the power shelf carefully aside.
DETAILED STEPS
Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the
front (PLIM) side of the chassis or a bare metal surface on the chassis.
Step 2
Turn the shelf power switch, located on the front (PLIM) side of the chassis, to the OFF position.
Cisco CRS Routers 16-Slot Line Card Chassis Installation Guide
32
shows a fixed configuration AC power shelf.
, Removing Fixed Configuration AC Power Cords
Wiring.
Installing and Removing Power Components
Figure 19: AC Wye Power Shelf with AC Rectifiers
Removing an AC rectifier or DC
Removing Fixed Configuration AC Power Cords
PEM, Removing a Fixed
and Removing Fixed
for more