EXP Computer C4077-90960 - Manual (Page 199)

PCA, Controller
1 Remove the back cover (see Figure 6-53) and the left cover (see Figure 6-54).
2 Unplug (8) connectors from the PCA (Figure 6-58, callout 1).
3 Remove (2) screws, CH108 (Figure 6-58, callout 2).
4 Release (2) plastic retaining posts (Figure 6-58, callout 3), and pull the PCA
free of the chassis.
To Reinstall:
Make sure that the PCA is firmly locked onto the plastic retaining posts.
Tray 4, PCA Controller
Figure 6-58
6-72 Removal and Replacement