Cisco GSR12/60 - 12012 Router -AnyLAN, SONET/SDH Installation And Configuration Manual page 160

Connecting Power
Step 14
Repeat Step 2 through Step 14 for a second DC-input power supply, then proceed to
Step 15.
Step 15
This completes the Cisco 12012 hardware installation procedure.
Proceed to the next chapter for procedures for observing system startup and performing a
basic configuration.
3-64 Cisco 12012 Gigabit Switch Router Installation and Configuration Guide
Using a flat-blade screwdriver or 10-mm nutdriver, turn the captive jackscrew on
the power supply faceplate clockwise (insert) to seat the power supply into the
backplane power connector. Do not overtighten the jackscrew.
Note To prevent connector alignment problems, apply even pressure to the
power supply by pushing at the top of the power supply with one hand while you
turn the captive jackscrew with the other hand.
All electrical connections between the power supply and the backplane
Note
are made automatically when the power supply is fully inserted in the power
supply bay.
Note Any power supply bay that does not have a power supply installed must
have a power supply blank installed to maintain airflow and for EMI
considerations.
Turn on the source DC circuit breaker servicing each DC-input power supply.
Do not turn on the DC-input power supply power switch at this time.