Quantcast Table 6-9.--Operating Procedures for the Line Fault Routiner
 

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Table 6-9.--Operating Procedures for the Line Fault Routiner
1
Operating Procedure
1.1
Connection to System
Place keys S1, S2 and S3 in their center positions. Connect the single black lead to cabinet
ground.
In the system to be tested, disconnect any finder X-Y Switch from its associated finder
assembly. Connect plug P404 of the test box to the vacated jack J404 and connect jack J404
of the test box to the X-Y Switch plug P404.
1.2
Lamp Test
All six lamps of the test box should now be on.
Place Key S1 in the position corresponding to the type of system under test. All six lamps
should now be off.
1.3
Power Fault Test
Momentarily operate Key S2 to the Neg Power Fault position.
If the System Negative to Hull fault lamp comes on, no further testing should be attempted
until this fault has been removed from the system.
Momentarily operate Key S2 to the Pos Power Fault position.
If the System Positive to Hull fault lamp comes on , no further testing should be attempted
until this fault has been removed from the system.
1.4
Line Testing
If a power fault condition is not encountered in either of the above tests, the test box will
automatically begin line testing.
1.5
Stop/Reset
Line testing may be stopped at any the by momentarily operating Key S3 to the Stop/Reset
position.
1.6
Re-Start after Line Fault
To manually re-start the test circuit after it has been stopped by the detection of a faulty
line, momentarily operate Key S3 to the Re-Start After Line Fault position.
2.
Temporarily disconnect line 11 from the system and in its place connect a 2000 ohm
precision resistor. Proceed with steps 1.1 through 1.4 above. When the test circuit has
stopped on line 11, adjust the meter calibration potentiometer for a meter reading of 2000
ohms exactly. Reset the test circuit and reconnect line 11 to the system.

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