Cisco Systems Cisco CRS-1 Manual De Usuario
2-4
Cisco CRS-1 Carrier Routing System 4-Slot Line Card Chassis Installation Guide
OL-10971-07
Chapter 2 Installing and Removing Power Components
About Installing and Removing the Power Components
Note
The DC return of this system should remain isolated from the system frame and chassis (DC-I: Isolated
DC Return).
DC Return).
Powering the Chassis Up or Down
The chassis does not have a single enable switch that powers the entire chassis and all its components
up and down. (These switches are called enable switches because they enable the power supplies to
produce output voltage and power).Most components on the chassis, such as the power supplies, MSCs,
PLIMs, and fan trays can be removed or installed in the chassis while it is running.
up and down. (These switches are called enable switches because they enable the power supplies to
produce output voltage and power).Most components on the chassis, such as the power supplies, MSCs,
PLIMs, and fan trays can be removed or installed in the chassis while it is running.
Before you can power the chassis up, you must complete the following tasks:
Step 1
Install the appropriate power shelf for your system (see the
or the
Step 2
Install the power supplies (see the
Step 3
Install the route processor (RP) card (see the
).
Step 4
Install the input power cables to the input power connectors on the rear of the chassis, and the other end
(plug side) to the AC or DC power source.
(plug side) to the AC or DC power source.
Step 5
Activate your power source.
Step 6
Turn the two power shelf enable switches on the rear (SFC) side of the power shelf (see
) to
the ON position.
Note
The two enable switches on the rear (SFC) side of the AC power shelf (
) put the chassis in
standby mode; in other words, they only power down the -54VDC output from the power supplies.