Internal Assemblies - Top Case
4-70 Removal and Replacement
Pacer Keypad
The following sections describe how to remove and replace the Pacer Keypad.
Preparation
1. Save the configuration.
If possible, save the customer’s configuration onto a Data Card (or print
the configuration) so the configuration can be restored after the repair is
complete.
2. Open the case safely.
See "Opening the Case" on page 4-24.
3. Disconnect and remove the Control PCA.
See "Control PCA" on page 4-36.
4. Remove the Shield Plate.
See "Shield Plate" on page 4-40.
5. Disconnect and remove the Keyscan PCA.
See "Keyscan PCA" on page 4-42.
6. Remove the Bezel Assembly.
See "Bezel Assembly" on page 4-48.
Removal
1. Flip the case over and remove the Pacer Keypad.
a. Flip the top case over rightside up. Place it on the bottom case for
support.
b. Using needle nose pliers, grasp one corner of the rubber overlay and
pull up. The overlay will peel up; the membrane switches underneath
may or may not come up with the overlay.
c. If the membrane switches are still in place, use a sharp tool such as a
utility knife to pick up one corner, then peel them up with needle nose
pliers. The membrane switches may peel apart into several layers - be
sure to remove all layers.
d. Slide the two flex circuit tails out of the slot in the case.
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