Procedure 9. Al4 and Al5 Assemblies
Caution DO NOT fold the board assemblies out of the analyzer one at a time. Always fold the Al4 and Al5 assemblies as a unit. Folding out one assembly at a time
binds the hinges attaching the assemblies and may damage an assembly and hinge.
4.The board assemblies are attached to the analyzer’s right side frame with two hinges. Fold both the Al4 and Al5 assemblies out of the analyzer as a unit.
5.Remove all cables from the assembly being removed.
6.Remove the two screws that attach the assembly being removed to its two mounting hinges.
Caution DO NOT torque shield screws to more than 5
Replacement
1.Attach the removed assembly to the two chassis hinges with two panhead screws.
2.Attach all cables to the assembly as illustrated in Figure
3.Lay the Al4 and Al5 assemblies flat against each other in the folded out position. Make sure that no cables become pinched between the two assemblies. Ensure that all coaxial cables are clear of hinges and standoffs before continuing onto the next step.
4.Fold both board assemblies into the analyzer as a unit. Use caution to avoid damaging any cable assemblies.
5.Secure the assemblies using the eight screws and washers removed in “Removal” step 3. Place a washer (2) on the appropriate screws. See Figure
6.Secure the analyzer’s cover assembly as described in Procedure 1, “Analyzer Cover.”
Assembly Replacement