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TM 55-4920-383-13&P
to paragraph 4-7 and perform only those steps of the disassembly procedures required to
remove the defective component. The following paragraphs provide instructions for repair
of the case and cover, repair and reassembly of the panel assembly, repair of cable assem-
blies, and repair of PC board assemblies. After all assemblies are repaired and reassembled,
refer to paragraph 4-13 for reassembly of the Test Set.
a. Case and Cover Repair.
Straighten minor dents in combination case or cover (33,
figure 3-3) using a mallet and suitable blocks. If damage is severe, replace case or cover.
If necessary, touch up repaired area with paint (item 3, table 1-4) as specified in TM 9-213.
b. Cable Assembly Repair.
Repair of cable assemblies is limited to replacement of
damaged connectors or pins in accordance with practices outlined in TM 55-1500-323-25.
Items which are non-repairable and which must be replaced if defective include the three
ribbon cable assemblies (56, 63, and 64, figure 3-3) and BNC/coaxial connectors. In addi-
tion, cable assemblies with shorted or open wires, or damaged insulation (cuts, cracks,
fraying,
pins are
etc.) are not repairable and must be replaced. Multipin connectors with removable
repairable. Remove damaged pins using suitable extraction tool, crimp new pin to
wire, and install pin in connector using suitable insertion tool. Use solder (item 4, table 1-4)
as required for soldering of wires, splices, terminations, and shields. Refer to figure 4-6
for stripping dimensions of internal coaxial cable assemblies (48, 49, 53, 54, 57 and 58,
figure 3-4) attached to front panel connectors J2 through J7. Refer to section VII of Chapter 3
for cable illustrations and repair parts.
c. Front Panel Assembly Repair. Repair of the panel assembly consists of replacing
defective parts. Straighten minor dents in panel subassembly (61, figure 3-4) using a mallet
and suitable blocks. Replace panel subassembly (61) if damage is severe. If necessary,
touch up repaired area with paint (item 5, table 1-4) as specified in TM 9-213. Referring
to figure 3-4, reassemble the front panel assembly as follows:
4-25
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