Quantcast Table 5-1. Troubleshooting Procedures - TM-5-6350-264-14-P-120023

 

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Figure 5-3. Data Transmitter With Troubleshooting Test Points
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TM-5-6350-264-14-P-12 Receiver Data R-1861/FSS-9(V) NSN
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Table 5-1. Troubleshooting Procedures - continued - TM-5-6350-264-14-P-120024
TM 5-6350-264-14&P-12
NAVELEX EE 181-AA-OMI-120/E121 C-7359-60-1
TO 31S9-2FSS9-1-12
NOTE
Troubleshooting procedures listed in table 5-1 may require more than one person to
perform corrective action.
Covers should be removed as necessary to perform troubleshooting procedures.
Never disconnect a wire without first marking that wire to assure proper reconnection.
Table 5-1. Troubleshooting Procedures
Trouble
Probable cause
Corrective action
1. Constant alarm
a. Bad wiring between
or no alarm.
Data Transmitter
and CU.
During troubleshooting, ensure that
only correct test points are used. If
power is applied to wrong point, or if
wrong point is shorted to ground, the
equipment will be damaged.
a. Tag, remove and insulated Data Trans-
mitter wires from TB6 and TB7 in
Control Unit (CU).
b. Set multimeter to ohms and connect
leads to any two of these wires,
(except black and gray wires). Note
meter indication and reverse leads.
Meter should indicate 45,000 to
55,000 ohms in both directions.
Repeat these steps for all wires.
c. If any of these indications are not cor-
rect, replace Data Transmitter.
(1) To remove Data Transmitter,
remove screws that secure
Data Transmitter to standoffs
in CU. Be careful not to drop
Transmitter inside CU. Re-
move screws that secure cover
and remove cover. Remove
code plug from socket on PC
board A2.
5-6

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