Procedure; Replacing An Nt4K54 Test Access Card - Nortel SONET AccessNode User Manual

7-20 Replacing modules in a common-equipment shelf

Procedure 7-9

Replacing an NT4K54 test access card

Use this procedure to replace a test access card (TAC) in an access bandwidth
manager (ABM) shelf.
Action
Step
1
2
3
4
5
6
AccessNode P0904244 Issue 1.0
Action
From the network element status screen, display the TAC equipment screen:
eq tac↵
The TAC equipment screen appears.
To prevent alarms from being raised when the circuit pack is removed,
change the state of the TAC group to out-of-service:
chgstate oos↵
The system prompts for confirmation of the state change.
Confirm the state change:
y↵
The state changes to out-of-service (OOS).
Remove the ABM shelf cover as shown in Chapter 3, "Removing covers and
grilles."
Pull the circuit pack ejector latches to remove the circuit pack from its slot as
shown in Figure 7-5.
Wait at least 10 seconds before installing the replacement card. Insert a
replacement TAC in the shelf. Gently push the replacement card in until the
ejector latches come in contact with the shelf. Then push the latches in
toward the circuit pack to engage the circuit pack with the backplane
connector.
—continued—