8. See Figure 45. Locate and remove the screws from the planar board (D).
Model 721 has five screws. Models 7x2, 74*, and 78* have seven screws.
9. Lift the planar upward from the housing.
10. To replace planar, reverse these procedures.
D
7X (Model 781, 741, C41)
5X (Model 721)
Figure 45. Planar location
Updated July 14, 2008
Chapter 2. Removal and replacement procedures 55