Filter PCA (A12)
To remove the Filter PCA (A12):
1. Remove the top cover, guard-box cover, and all the analog modules. See the
Analog Modules section and Figure 29.
2. Remove the two Phillips screws from the front side of the rear guard box wall.
3. Remove the three Phillips screws from the transformer cover on the front side
of the rear guard box wall.
4. Remove the three standoffs under the transformer cover.
5. Lift out the Filter PCA (A12).
Calibrator
Access Procedure
93