Maintenance
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Step 2. Remove the four 10-32 Phillips head screws from the DU backplate and
withdraw the DU from the mounting.
7.3.2.2
Remove the case from the DU PWA.
Step 1. Place the DU front side up on a flat, static safe surface and remove the
eight 6-32 X 1-1/4 Phillips head screws from the front of the DU.
