206 Chapter 24 Replacing an internal component
NN40170-305
Closing the main unit case
To close the main unit case
1 Attach one end of a grounding strap to your wrist and the other end to a grounded metal
surface.
2 Place the top of the case on top of the main unit case. Make sure the side edges of the case are
aligned and the front of the top is back about 1 cm (3/8 in.).
3 Slide the top of the case forward until it clicks in place. See the figure Replacing the top of the
case on page 206.
Figure 86 Replacing the top of the case
4 Turn the main unit over so you can access the screws holes on the bottom of the unit.
5 Insert the three case screws in the back of the unit and tighten them. For the location of the
screws, see the figure BCM50 case screws on page 197.
6 Turn the main unit over so that the top of the unit faces up.
7 Proceed to Installing the main unit on page 207.
Caution: Use only the screws that you removed from the unit in the procedure
Opening the main unit case on page 196. Do not use any other screws.
