Cisco 7600-SIP-400 - SPA Interface Processor 400 Installation Manual page 232

Removing and Replacing the Power Supply
Figure 5-98
Power leads
attached to
terminal block
( - ) Negative
(+) Positive
( - ) Negative
(+) Positive
From the left side of the power supply, connect each of the DC-input wires to the terminal block
b.
(Figure 5-98
Note
Secure outer block cover.
c.
Wire for 4500 W (left side of power supply bay) as follows:
Step 7
From the left side of the power supply, connect the ground wire to the ground
a.
Cisco 7600 Series Router Installation Guide
5-104
DC-Input Wire Connections for 2700-W DC-Input Power Supply for Left Side of Power
Bay
Input power
module
Power
CI SC O SY
ST EM S, IN
C
switch
Captive
installation
screw
and Figure 5-99) in this order:
Negative (-)
Positive (+)
When you tighten the terminal nuts, make sure they are snug. Do not over tighten them.
Recommended torque strength is 20 inch-pounds. Over tightening the terminal nuts can
break the terminal block (Maximum torque: 36 inch-pounds).
Chapter 5
Terminal
block cover
1
2
3
IN PU T
4
OK
FA N
OU TP UT
OK
FA IL
( ) Ground
Removal and Replacement Procedures
(Figure 5-99).
OL-4503-26