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Cisco ASR 1000 Series Replacing page 92

Removing and replacing frus from the routers
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Replacing the +24 VDC Power Supply in Cisco ASR 1002 Router
• Observe the polarity—Unlike the polarity labels of the –48 VDC power supply (ground, positive, negative),
the polarity labels on the +24 VDC are ground, negative, positive as shown in xref fig from right to left
as they appear on the actual power supply unit.
• The ground (GND) lead is always installed first and removed last.
• The +24 VDC power supply uses a spring loaded terminal block; therefore have the recommended
screwdriver size available.
• Review the diagrams to see how the wire is stripped and how the screwdriver is inserted at an angle into
the terminal block.
• Have the following equipment available to install and remove the +24 VDC power supply:
• 3.5mm flat-blade screwdriver
• 8-gauge wire
The following figure shows the +24 VDC power supply for the Cisco ASR 1002 Router.
Figure 59: +24 VDC Power Supply for the Cisco ASR 1002 Router
1
+24 VDC terminal block
2
Positive (+) lead
3
Negative (-) lead
4
Ground (GND) lead
5
Power supply LEDs
This section describes how to connect the +24 VDC power supply in the Cisco ASR 1002 Router.
Note
The color coding of the +24 VDC input power supply leads depends on the color coding of the +24 VDC
power source at your site. Typically, green or green/yellow is used for ground. Make certain the lead color
coding you choose for the +24 VDC input power supply matches lead color coding used at the +24 VDC
power source. Most commonly used wire color-coding is red for positive (+) lead and black for negative (–)
lead.
Removing and Replacing FRUs from the Cisco ASR 1000 Series Routers
92
Removing and Replacing FRUs from the Cisco ASR 1000 Series Routers
6
Standby/On switch
7
Captive fastener
8
Power supply tabs
9
+27 VDC INPUT label
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