Intergraph InterServe 8000 System Reference Manual page 10

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To open the base unit:
1. Defeat the system's intruder alert. See the System Setup document delivered with the system for
more information.
2. Log off and shut down the operating system.
3. Flip the circuit breaker switch to the OFF position.
4. If the base unit is in a rack and uses Intergraph sliding shelves, slide the unit out of the rack.
Remove the screw (located under the sliding shelf handle) securing the sliding shelf to the
rack.
Disengage the sliding shelf by lifting the release lever.
Pull the shelf out until it locks in the extended position. The rear of the base unit should clear
the front of the rack by two inches. You may need to disconnect cables to fully extend the
unit.
The base unit can remain on the shelf during the servicing or upgrade procedures.
WARNING For units installed in a standalone rack, ensure the rack's front and side stabilizers are
extended at all times. If the rack includes adjustable feet on the stabilizers, they must be in full
contact with the floor. If the rack includes locking casters, they should be locked.
5. Locate the twist locks on the back of the base unit. Turn the locks counter-clockwise to disengage
the side panels.
6. Pull the side panels back an inch then lift them off the unit. The system power turns off
automatically when either side panel is removed. Figures on the following pages show internal
views of the system.
7. Before performing the service or upgrade procedure, review the section "Avoiding Electrostatic
Discharge."