Closing The System Unit - Sun Microsystems SPARCclassic Service Manual

Closing the System Unit

To close the system unit:
1. Preparation.
a. Check that there are no loose tools or screws in the unit.
b. Check that all SBus cards and SIMMs are seated properly.
c. Check that all internal cable connections are tight.
d. Check that the power supply wiring is tucked inside the system to avoid
pinching the wiring when you close the system unit.
2. Detach and remove the wrist strap.
3. Grasp the unit top near the power supply (see Figure 7–3).
Rotate the unit top at a 15-degree angle and rotate your hand position so that
thumbs and fingers point up and the five interlock hooks can be aligned.
Note - The interlock hooks do not engage until the unit is lowered to a 45-degree
angle. Continue to hold the cover with your hands.
4. Reconnect the unit top and bottom (see Figure 7–3).
a. Rest the front edges together to connect the interlock hooks by pushing
gently toward the back of the unit.
b. As you lower the unit top, continue to push back to secure the connection.
The unit top will rest slightly forward.
c. Gently push the unit top back a few millimeters until the unit top and
bottom are aligned.
5. Attach the lock block.
Attach the lock block by inserting the PEM screw through the block on the
outside, through the security loop on the inside, and into the power supply (see
Figure 7–3). Tighten the screw with a screwdriver. Be careful not to overtighten
the screw.
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Internal Access