Service manual

Removal and Replacement 7-51
Removal
1. Shut down the operating system and power down the system.
2. Expose the system drawer.
3. Remove all three section covers to expose the interlock switch assembly.
4. Remove the two screws holding the interlock in place.
5. Push the interlock toward the opposite side of the system drawer (be sure not to
twist it) and tilt it so that the switches affected by the power and system card
cage covers clear the openings in the side of the drawer. Slide it toward the
front of the drawer and remove it, letting it hang loosely over the side of the
drawer.
6. If you are working on a pedestal system, disconnect the switch connection from
the tray bulkhead and remove the interlock switch assembly.
7. If you are working on a system drawer in a cabinet, unscrew the four screws
holding the OCP tray assembly in place beneath the drawer in front.
8. Slide the tray out and remove it from the system.
9. Pull the interlock switch connection to the OCP back through the access hole
and remove the entire switch assembly.
Replacement
Reverse the steps in the Removal procedure.
Verification
Power up the system. If the switch you installed is faulty, the system will not power
up.