Compaq AlphaServer DS20 Service Manual page 119

Removal
1. Shut down the operating system and turn the system off.
2. Expose the card cage side of the system (see Section 4.3).
3. Unplug the AC power cord.
4. Loosen the screw that holds the CD-ROM bracket to the system (
4-13).
5. Detach both the power and the signal connectors at the rear of the CD-ROM.
6. Pull the CD-ROM and the bracket a short distance toward the rear of the system
and lift them out of the cabinet.
7. Unplug the interlock switch's pigtail cable from the cable it is connected to.
8. Remove the two screws holding the interlock in place and remove the interlock
).
(
Replacement
Reverse the steps in the Removal procedure.
Verification
Power up the system. If the switch is faulty, the system will not power up.
Removal and Replacement 4-29
in Figure