Cisco 12406 Replacement Instructions Manual page 12

Figure 9
4
1 Negative Terminal Port
2
Positive Terminal Port
Power down your router.
Warning
To remove power from the router, follow these steps:
Step 1 Turn off the switch on the faceplates of the power modules.
Step 2 Turn off all facility power source circuit breakers for power cables connected to the PDU.
Step 3 Disconnect facility power source cables:
• For AC-powered systems, unplug both AC power cords from their power outlets and disconnect
them from the AC PDU. (See
• For DC-powered systems, disconnect the source DC wires (negative, positive, ground) from the
terminal connector block on the DC PDU. (See
Step 4 Verify that all of the following conditions are true:
• LEDs on the power module faceplates are off
• Power module fans are off
• All blower module fans are off
Both blower module LEDs are off
•
All alarm card LEDs are off
•
All RP and line card LEDs are off
•
In a noisy environment, place your hand in front of the exhaust vents at the rear of the chassis to verify
Caution
that the blowers are off.
Cisco 12006 and Cisco 12406 Router Chassis Replacement Instructions
12
PDU DC Power Connector Block
P O
W E
R A
Figure
1
+
2
G N
D
3
3 Ground Terminal Port
4
Terminal Port Connector Screws
7.)
Figure 9.)
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