Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 158

Removing and Replacing the Power Supply
Remove the plastic insulator from over the terminal area
Step 6
Disconnect the DC-input wires from the terminal block in this order:
Step 7
Positive (+)
•
Negative (-)
•
Note
Disconnect the PWR-4000-DC power supply ground.
Step 8
When installing the unit, the ground connection must always be made first and disconnected last.
Warning
Figure 5-33
Power leads
attached to
terminal block
(+) Positive
( - ) Negative
(+) Positive
( - ) Negative
Note Figure 5-33
Step 9 Loosen the captive installation screw on the power supply
Use both hands to install and remove power supplies. Each DC-input power supply weighs between 22
Caution
pounds (9.9 kg) and 33 pounds (15 kg).
Cisco 7600 Series Router Installation Guide
5-30
You must remove DC-input wires from two terminal blocks for the 4000 W DC-input power
supply (if both terminal blocks are used).
DC-Input Wire Connections for 4000-W DC-Input Power Supply
Terminal
Plastic
block cover
insulator
( ) Ground
0
Power
switch
shows a 4000 W configuration that requires cable tie-wraps.
Chapter 5
(Figure
Terminal
Power leads
attached to
block cover
terminal block
Plastic
(+) Positive
insulator
( - ) Negative
I
INP UT OK
FAN
OUT PUT
1
2
3
OK
FAIL
Captive
installation
screw
(Figure
Removal and Replacement Procedures
5-33).
( ) Ground
5-33).
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