SonoSite C1.9 PLUS, Service Manual

Page: 63 / 98

Chapter 7: Replacement Procedures 55
7.3.4 Replacing the Trackball
1. Remove the four screws that hold the top cover on the new Trackball using a #1
Phillips screwdriver. Discard the cover and screws. Be careful not to tip the
Trackball and spill the Trackball parts (Figure 7.12).
2. Holding the Trackball, carefully turn the Control Panel Subassembly over onto
the new Trackball and set it in place.
3. Carefully turn the Control Panel Subassembly over, holding the Trackball in
place.
4. Tighten the four screws securing the Trackball using a #1 Phillips screwdriver
(Figure 7.13). Torque the screws to 3.6 in./lb. (0.4 newton meter).
Figure 7.13 Securing the Trackball
5. Place the foam backing on the Trackball (Figure 7.14).
Figure 7.14 Placing the Foam Backing
Screws (4)
Foam backing