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Section V. TROUBLESHOOTING
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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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Table 2-2. TROUBLESHOOTING
TM 11-5815-238-20
NOTE
The procedures in Table 2-2 assume that the teletypewriter is connected to a signal line or the local
test circuit (see para 2-11), that a good fuse is properly inserted in the fuse holder and that paper
tape has been properly loaded in the teletypewriter.
This manual cannot list all troubles that may occur, nor everything to check, nor all possible procedures to correct
troubles listed. If trouble is not listed in Table 2-2 or is not corrected by the procedures under CORRECTIVE
ACTION, notify your supervisor or next higher level of maintenance.
Set KEYBOARD switch to SEND position.
Set SELECTOR switch to position 3 (LOCAL REPUNCH).
TT-76(*)/GGC teletypewriter transmitter contacts are now placed in series with the selector magnet and a local dc
supply. TT-699(*)/GGC teletypewriter contacts are now placed in series with each other and the input from the line
transmitter module. The local machine reperforator can now be operated with signals received directly from transmitter-
distributor or key board transmitter.
NOTE
If the trouble still exists after Troubleshooting, check for it in the line circuit or at the distant
teletypewriter.
2-19

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