Remove and Replace Front Power Sequencer

Important Note: This is a disruptive procedure and maintence time must be scheduled with the customer if the Local/Remote switches are in the Remote position on the front and rear power sequencers. Do Not attempt this procedure with the Local/Remote switches in the Remote position - the cabinet WILL Lose Power.

Note: If the Local/Remote switches are In the Local position, then the power sequencer can be changed non-disruptively.

Note: If needed, view all removal and replacement illustrations before putting the circuit breaker in the OFF position. Putting the circuit breaker in the OFF position will remove power to the service processor, preventing all illustrations from being displayed until power has been re-applied and the service processor has booted.

1. Before starting this service action enable the reserve cabinet(s) function.

   a) Reserve the cabinet(s) for maintenance.

   b) Enter a description of the service action (i.e. replacing front power sequencer).

   c) Select the estimated amount of time of the service action from the pull-down.

   d) Select the Reserve button.

   e) Other users will be alerted that this service action is in progress when they log in.

2. Remove the four screws holding the key switch panel in place to provide access to the power sequencer circuit breaker.

3. Lift the rear power sequencer circuit breaker up to the Off position.

4. Disconnect the AC power cable from the grounded outlet.

5. Disconnect the AC power cable from the connector on the power sequencer.

   a) Push down on the latch to release the connector, then push it down through the cable hole to allow the power sequencer to slide out.

   b) View the power cable removal illustration.

6. Disconnect the grounding strap from the power sequencer.

7. From the rear of the cabinet disconnect the key switch cable from the system interface cable at the back of the front power sequencer.

   a) View the key switch interface cable removal illustration.

8. From the front, remove the the key switch panel and cable from the cabinet to allow the power sequencer to slide out. Use care when pulling the key switch cable from under the power sequencer .

9. Remove the power sequencer cables J15 and J14 from the front of the power sequencer and push both cables down through the cable hole to allow the power sequencer to slide out.

10. Remove the four screws holding the power sequencer rails to the cabinet frame.

    a) View the power sequencer removal illustration.

11. Slide the power sequencer out far enough to see and easily disconnect the following cables:

    a) Disconnect the system interface cable from the connector (J3 or J4) at the back of the power sequencer.

    A small blade/flat tip screw driver is required.

    b) Disconnect cables J1 (bottom) and J2 (top) on the far left and J5 through J12 on the right.

    The odd numbered cables J5, J7, J9 and J11 go from left to right on the bottom row of connectors of the sequencer.

    The even numbered cables J6, J8, J10 and J12 go from left to right on the top row of connectors of the sequencer.

12. Slide the power sequencer completely out of the cabinet.

13. Remove the eight screws holding the rails to the removed power sequence.

    a) View the power sequencer removal illustration.

14. Attach the rails to the new power sequence with the eight screws.

15. Slide the new power sequencer partially into the cabinet leaving enough room to easily connect the following cables:

    a) Connect the system interface cable to the connector (J3 or J4) at the back of the power sequencer.

    A small blade/flat tip screw driver is required.

    b) Connect cables J1 (bottom) and J2 (top) on the far left and J5 through J12 on the right.

    The odd numbered cables J5, J7, J9 and J11 go from left to right on the bottom row of connectors of the sequencer.

    The even numbered cables J6, J8, J10 and J12 go from left to right on the top row of connectors of the sequencer.

16. Carefully slide the power sequencer all the way in, being careful not to pinch any cables.

17. Insert and tighten the four screws holding the power sequencer rails to the cabinet frame.

18. Insert and tighten the power sequencer cables J15 and J14 to the front of the power sequencer.

19. Pull the AC power cable through the cable hole.

20. Connect the AC power cable to the connector on the power sequencer and engage the latch to secure it to the connector. Make sure the power sequencer circuit breaker is in the Off (up) position.

    a) View the power cable installation illustration.

21. From the front, place the key switch panel up near the cabinet frame and slide the key switch cable under the power sequencer.

22. From the rear of the cabinet connect the key switch cable to the system interface cable at the back of the front power sequencer.

23. Connect the grounding strap to the power sequencer.

24. Connect the AC power cable to the grounded outlet.

25. Push the front power sequencer circuit breaker down to the On position.

26. The Power Available and the two Switched Outlet green LEDs should now be On.

27. The Amber service LED on the front of the array tray(s) should now be off and the Amber PCU(s) LEDs should also be off.

28. Hold the key switch panel to the cabinet frame and tighten the four screws.

29. After this sevice action has been completed all Alarms will need to be deleted: Delete Alarms.

    a) From the left side of the screen select the "check mark" box to select all alarms.

    b) Select the Delete button to delete all of the alarms.

    Note: Be sure to delete any associated alarms from all other monitoring applications.

30. Disable the reserve cabinet(s) function.

    a) Release the cabinet(s).

    b) Select the Release button.