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TABLE 2-1. MONTHLY PMCS TABLE
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TM-11-5815-238-20 Teletypewriter Sets AN/GGC-3 AN/GGC-3A AN/GGC-53 AN/GGC-53A and Teletypewriter Reperforator-Transmitters TT-76/GCC TT-76A/GGC Manual
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TROUBLESHOOTING TABLE (Table 2-2)
TM 11-5815-238-20
Section V. TROUBLESHOOTING
2-13. GENERAL
Troubleshooting at the Organizational Maintenance level requires you to locate any trouble as quickly as possible.
Once trouble is located, repair or replace the part if you are authorized to do so or determine if a higher category of
maintenance is required. Repairs by Organizational Maintenance are limited to tools, test equipment and replacement
parts allocated to that level by the Maintenance Allocation Chart (MAC) located in Appendix B of this manual.
2-14. VISUAL INSPECTION
Equipment failure or improper operation is usually caused by one or more of the visible faults listed below:
1.
Improperly connected power cord.
2.
Burned out fuse in power supply and terminal unit.
3.
Worn, broken, burned out or disconnected cord or plug.
4.
Wires broken by too much vibration.
5.
Loose ground connection, particularly in dc systems using a simplex line.
6.
Worn or, damaged mechanical part.
7.
Power selector switch not set to match ac power.
8.
Inadequate supply of paper tape, or improper positioning of tape through guides, under type wheel and through
punch and die assembly.
9. Improper positioning of inking ribbon around spools and rollers or not passed through guide slots.
10. Power switch not turned ON.
Visually check as much of the line system as possible for obvious trouble, especially lines not connected into proper
facilities for type of operation desired.
NOTE
Before using Troubleshooting Table (Table 2-2), check your work order and talk to the Operator, if
possible, for a description of symptoms if trouble occurred while equipment was in operation.
2-15. TROUBLESHOOTING TABLE (Table 2-2)
Table 2-2 lists common problems that may occur during operation or maintenance of AN/GGC-3(*) or AN/GGC-
53(*).
Follow these steps to use Table 2-2:
 Find the problem under MALFUNCTION.
 Check for possible causes of the problem under TEST OR INSPECTION.
 Use the procedures under CORRECTIVE ACTION to correct the problem.
2-18

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