Remove and Replace Key Switch Cable

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 key switch).

   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. From the front of the cabinet, remove the four screws holding the key switch panel to the cabinet frame.

3. Carefully pull the key switch panel off and locate the key switch wiring cable that runs under the front power sequencer.

4. From the rear of the cabinet, locate the key switch wiring cable between the front and rear power sequencers.

   a) View the key switch cable connector location illustration.

5. From the rear of the cabinet disconnect the key switch cable from the system interface cable between the front and rear power sequencers.

6. From the front, pull the the key switch panel and cable from the cabinet. Use care when pulling the key switch cable from under the power sequencer .

7. From the back of the key switch panel use a pair of needle noose pliers to slide off the metal clip that holds the key switch to the key switch panel.

   a) View the key switch removal illustration.

8. Pull the key switch out of the key switch panel.

9. Insert the new key switch in the panel opening.

10. Slide the metal clip onto the notch of the key switch body to hold it in place.

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

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

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

14. Disable the reserve cabinet(s) function.

    a) Release the cabinet(s).

    b) Select the Release button.