TABLE 6-1. TROUBLESHOOTING CHART (cont)
Remedy
Probable Cause
Trouble
Replace resistor.
Defective resistor R2.
Replace switch.
Defective switch S1.
Defective wiring.
Replace wire as necessary.
Replace valve assembly.
Open legs in valve assembly.
Replace switch.
Large errors at one or more
Switch S1 defective.
headings when determining
control transformer index error,
using Field Tester.
Open or shorted legs in Field
Replace valve assembly.
Tester valve assembly.
Defective Field Tester wiring.
Replace wires as necessary.
Valve assembly not centered in
Reposition valve assembly and
replace spacers as necessary.
shield can assembly of Field
Tester.
Defective Field Tester.
Replace wiring as necessary.
Low sensitivity, using magnetic
azimuth reference detector in
Field Tester.
Defective valve assembly in
Replace valve assembly in
magnetic azimuth reference
magnetic reference detector.
detector of Field Tester.
Errors exceed 5 degrees at one
Defective Field Tester wiring.
Replace wiring as necessary.
or more headings of Field
Tester magnetic azimuth
Defective magnetic azimuth
Replace valve assembly.
reference detector.
reference detector valve assembly.
Level valve assembly.
Magnetic azimuth reference
detector valve assembly not level.
Magnetic azimuth reference
Demagnetize magnetic azimuth
reference detector valve assembly
detector valve assembly
magnetized.
by collecting cable assembly P3
to 5J1 of Field Tester.
Multimeter does not indicate
Defective Field Tester switch S2.
Replace switch.
on one or more positions when
checking E1 and E2 voltage
Defective Field Tester wiring
Replace wire as necessary.
range and regulation, using
Field Tester.
Multimeter shows no momentary
Defective Field Tester resistor
Replace resistor, switch, or
change as Field Tester switch
R1 or R5.
wiring.
S3 is set to E1 or E2 positions,
Defective Field Tester switch S3.
Defective Field Tester wiring.
6-6A
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