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 INST
ALL/REMO
VE PO
WER SUPPL
Y.
FASTENERS MUST BE FULL
Y ENGA
GED
PRIOR
TO OPERA
TING PO
WER SUPPL
Y.
+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