Cisco 7600-SIP-400 - SPA Interface Processor 400 - Page 150

5-22
Cisco 7600 Series Router Installation Guide
OL-4503-26
Chapter 5 Removal and Replacement Procedures
Removing and Replacing the Power Supply
Figure 5-24 DC-Input Front Panel for 4500-W DC-Input Power Supply
Step 3 Remove the two screws securing each of the cable holder covers, and remove the cable holder covers off
the cable holders (
Figure 5-22).
Step 4 Disconnect the DC-input wires from the terminal block (Figure 5-22) in this order:
• Positive (+)
• Negative (-)
• Ground
Step 5 Remove the two tie-wraps from the ground cable. If there is a long cable tie securing the cable holders
as shown in
Figure 5-22, remove that as well.
Warning When installing the unit, the ground connection must always be made first and disconnected last.
Step 6 Loosen the captive installation screws on the power supply (Figure 5-22).
Caution Use both hands to install and remove power supplies. Each PWR-2700-DC DC-input power supply
weighs 14.1 pounds (6.4 kg).
1 DC power cable terminal block 6 Tie-wrap
2 Cable holder 7 DC power cable terminal block
3 Captive installation screw 8 Cable holder cover
4 Ground 9 Power Switch
5 Status LEDs 10 DC power cable terminal block cover
PWR-4500-DC
SWITCH MUST BE IN OFF “O” POSITION
TO INSTALL/REMOVE POWER SUPPLY.
FASTENERS MUST BE FULLY ENGAGED
PRIOR TO OPERATING POWER SUPPLY.
+VE-1
48V-60V
40A
-VE-1
+VE-2
48V-60V
40A
-VE-2
+VE-3
48V-60V
40A
-VE-3
INSTALL
REMOVE
+VE-1
48V-60V
40A
-VE-1
+VE-2
48V-60V
40A
-VE-2
+VE-3
48V-60V
40A
-VE-3
INPUT1
OK
INPUT2
OK
FAN
OK
OUTPUT
FAIL
252586
5
1
7
9
3
6
4
8
2
10