Cisco 8700 Series Hardware Installation Manual page 91

Table of Contents

Replace Chassis Components

When there are two PSUs in the router, use the following steps to replace the PSUs (AC to DC or vice-versa.

Routers can operate normally only with the same type of PSU in both the power slots. During replacement

of PSU from one type to another, the router exhibits unexpected behaviour and the Cisco IOS XR software

raises the PID mismatch alarm due to the presence of different types of PSUs. You must therefore replace the

PSUs in both slots with the same type.

Power down the fixed configuration Power Distribution Unit (PDU) before removing the PDU from the

chassis.

Procedure

Step 1

Ensure that both the PSUs are powered off.

Step 2

If the power supply is connected to an AC or DC circuit, shut off the circuit at the circuit breaker or PDU.

Step 3

Disconnect the power cable of the PSU that must be replaced.

Note

Step 4

Press the tab inward to unlatch the PSU, and pull the handle to remove the PSU.

Step 5

Insert the new PSU.

Note

Step 6

Connect the PSU cable. If the power supply is connected to an AC or DC circuit, turn on the circuit at the

circuit breaker or PDU.source. Wait till the PSU LED color turns green. After replacing the PSU, verify the

power using the show environment power command.

Step 7

Repeat steps 1 through 6 to replace the PSU in the second slot.

Figure 61: Cisco 8711-32FH Router

To remove the Saf-D-Grid power cord (AC or HVDC) or the low voltage DC power cord from the

power supply, press the latch before pulling the power cord out.

If the PSU does not go all the way into the slot, do not force it. Remove the PSU and verify that it is

the correct type for your router and in the correct orientation.

Remove Power Supply

Hardware Installation Guide for Cisco 8700 Series Routers

Replace Power Supply

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8711-32fh-m