5-72
Cisco 7600 Series Router Installation Guide
OL-4503-26
Chapter 5 Removal and Replacement Procedures
Removing and Replacing the Power Supply
Note
For redundant power supplies, you must connect the PWR-4000-DC power supply ground for both
power supplies.
a.
Install the PWR-4000-DC power supply ground as described in this procedure.
b.
If you intend to use an additional system (earth ground), ensure that the system ground connection
has been made. For ground connection installation instructions, see the
“System Ground
Connection” section on page 3-19
.
Step 2
Verify that power is off to the DC circuit that is connected to the power supply you are installing. Place
appropriate safety flag and lockout devices at power switch handle to avoid any circuit inputs from
becoming energized.
Caution
Use both hands to install and remove power supplies. Each PWR-4000-DC weighs 33 pounds (15 kg).
Step 3
Grasp the power supply handle with one hand, and place your other hand underneath the power supply.
Slide the power supply into the power supply bay. Make sure that the power supply is fully seated in the
bay (
Figure 5-75
).
Figure 5-75
Handling a DC-Input Power Supply
Step 4
Tighten the power supply captive installation screw (
Figure 5-76
).
104978
INPUT OK
FAN
OK
OUTPUT
FAIL
I
0
1
3
2
+
VE-1
-VE-1
+
VE-2
-VE-2
+
VE-3
-VE-3