Preparing The Defective Chassis - Cisco 12406 Replacement Instructions Manual

Preparing the Defective Chassis

To prepare the defective chassis for component removal you must disconnect the power from the PDU
and disconnect the RP cables, line card cables, interface cables, and alarm card cables. These procedures
are described below.
Disconnecting Power from the Power Distribution Units
Before transferring the components from the defective chassis to the replacement chassis, you must first
power down the router. Although many of the components in this procedure support OIR, that is, they
are hot-swappable, the router must be powered down before you remove the PDU.
The power distribution unit (PDU) is the point where facility power is connected to the router. The PDU
is located at the rear of the chassis, behind the blower module.
with the AC PDU installed.
For routers equipped with an AC-powered subsystem, the PDU is an AC PDU, and facility AC power
connects to the PDU through two AC power cord receptacles. (See
For routers equipped with a DC-powered subsystem, the PDU is a DC PDU, and facility DC power
connects to the PDU through source DC power cable leads clamped into two DC connector blocks.
(See
Figure 6
78-16109-01
Figure 8 and Figure 9.)
AC-Powered Router—Rear View, Blower Module Removed
Cisco 12006 and Cisco 12406 Router Chassis Replacement Instructions
Figure 6 shows the rear view of a router
Figure 7.)
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