Maintaining the Cisco 12012 7-23
Removing and Replacing a DC-Input Power Supply
Step 8
Remove the two screws that secure the power cable bracket to the power supply
faceplate and remove the cable bracket. (See Figure 7-10.) Set the bracket and
screws aside.
Figure 7-10
Removing the Power Cable Bracket
Caution
Before proceeding to the next step, verify that the source DC circuit breaker
servicing the DC power supply you are removing is in the OFF position. Also verify that
the power switch on the DC-input power supply is OFF (O). As an additional check,
measure the voltages across the leads attached to the power supply you have removed. All
readings should be zero volts.
H10665
Power cable
bracket
Bracket screws
Standoff
Circuit breaker
alarm terminal
block
Source DC
power cable
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