Cisco CATALYST 6509E 9 SLOT 15U CHASSIS NO POWER SUPPLY NO FAN TRAY Specification Guide

Before performing any of the following procedures, ensure that power is removed from the 
DC circuit. Statement 1003 

When installing or replacing the unit, the ground connection must always be made first and 
disconnected last. Statement 1046

Follow these steps to install a DC-input PEM:

Ensure that the system (earth) ground connection has been made. For ground connection installation 
instructions, see the 

Verify that power is off to the DC circuit for the PEM that you are installing. As an added precaution, 
place the appropriate safety flag and lockout devices at the source power circuit breaker, or place a piece 
of adhesive tape over the circuit breaker handle to prevent accidental power restoration while you are 
working on the circuit.

Install the PEM part way in the chassis so that you still have access to the PEM terminal block screws. 
(See 

Connect the DC-input wires to the terminal block in this order:

Negative (–)

Positive (+)

After ensuring that all wire connections are secure, install the PEM in the bay. 

Tighten the power supply captive installation screws. (See

In a system with dual power supplies, connect each power supply to a separate input line. In case of 
a line failure, the second source will most likely still be available.

Remove the safety flag, lockout devices, or tape from the circuit breaker switch handle, and restore 
power by moving the circuit breaker switch handle to the On (|) position.

Verify the power supply operation by ensuring that the power supply front panel LEDs are in the 
following states:

INPUT OK LED is green

FAN OK LED is green

OUTPUT FAIL LED is not lit

If the LEDs indicate a power problem, see the