Maintenance
Disassembly and Reassembly 5
5-21
Leveling Head Reassembly Procedure
To reassemble the Leveling head, see Figure 5-11:
1. Position the 4 GHz Head PCA in the bottom case.
2. Push the N-type connector plate gently back to mate with the case.
3. Refit the metal screen and 13 screws. Torque them to 0.25 Nm (2.22 in-lb).
4. Secure the N-type connector to the bottom case and screen with the four
countersunk screws and torque them to 0.25 Nm (2.22 in-lb).
5. Fit the cable to bottom screen and connect the SMA connector to 4 GHz
Head PCA. Torque to 1Nm (8.85 in-lb).
6. Position and align the cable clamp with the screw holes in the bottom-half of
the case; make sure there are no wires being trapped.
7. Fit and tighten the three cable-clamp screws as follows:
a. Torque the two M2 screws to 0.25 Nm (2.22 in-lb).
b. Torque the one M2.5 screw to 0.4 Nm (3.54 in-lb).
8. Plug the Head Control PCA into position and re-connect the 20-pin
connector.
9. Fit all eight cover-fixing screws. Torque to 0.4 Nm (3.54 in-lb).
Reassembling the Product
To reassemble the Product, logically reverse the disassembly procedures. In the
process, make sure to re-establish all electrical connections. Also make sure all
parts are correctly aligned and positioned, observe torque settings where
applicable, and do not force-fit any of the parts into position.
Safety Test
Perform electrical safety tests as required by local legislation. Fluke Calibration
recommends, at a minimum, a check of the continuity from the earth terminal in
the Product inlet to all accessible metal parts followed by an electric strength test
between mains terminals (L, N) and earth ground.
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