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TM 55-4920-383-13&P
two hex nuts (17 and 14). Mount two protective caps (15) on potentiometers (23 and 24) and
secure chain of protective caps to panel subassembly (61) using screw (16).
(13) Attach gasket (22), display cover glass (21) and bezel (20) to panel
(61) using six screws (19).
subassembly
d.
Printed Circuit Board Repair. Repair of boards at direct support and general support
—
levels of maintenance is limited to replacement of six digital displays (30, figure 3-3) and the
plug-in integrated circuit (59) on digital board A1 (31).
4-10.
Lubrication.
The Test Set does not require lubrication at the direct and general support levels of
maintenance.
4-11. Testing.
After repairing internal coaxial cables (48, 49, 53, 54, 57 and 58), check continuity of
inner conductor, and shield using AN/USM303A set to R x 1 scale prior to reassembly of
Test Set.
Section IV. REASSEMBLY AND ALIGNMENT’
4-12.
Scope.
This section contains instructions for installing components and assemblies that have been
repaired and reassembled in accordance with paragraphs 4-6 through 4-11. In addition,
before the Test Set is installed in the combination case, instructions are provided for
adjusting power supply A5.
4-13.
Reassembly.
To reassemble the Test Set, refer to figure 3-3 and proceed as follows:
4-28
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