ARMY TM 9-6115-643-24
AIR FORCE TO 35C2-3-445-22
TABLE 2-6. UNIT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
21.
AC VOLTMETER (VOLTS AC) DOES NOT INDICATE VOLTAGE.
Step 1.
Test for defective AC Voltmeter (VOLTS AC), paragraph 2.31.2.
a.
If AC Voltmeter (VOLTS AC) is not defective, do step 2.
b.
If defective, replace AC Voltmeter (VOLTS AC), paragraph 2.31
Step 2.
Test for defective VOLTAGE adjust potentiometer, paragraph 2.33.3.
a.
If VOLTAGE adjust potentiometer is not defective, do step 3.
b.
If defective, replace VOLTAGE adjust potentiometer, paragraph 2.33.
Step 3.
Test for defective AM-VM transfer switch, paragraph 2.38.3.
a.
If defective, replace AM-VM transfer switch, paragraph 2.38.
b.
If AM-VM transfer switch is not defective, notify next higher level of maintenance
22.
AC VOLTMETER (VOLTS AC) INDICATES VOLTAGE, BUT FREQUENCY METER (HERTZ) IS OFF
SCALE.
Step 1.
Test for defective frequency transducer, paragraphs 2.51.2 and 2.51.3.
a.
If frequency transducer is not defective, do step 2.
b.
If defective, replace frequency transducer, paragraph 2.51.
Step 2.
Test for defective FREQUENCY meter (HERTZ), paragraphs 2.28.2 and 2.28.3.
a.
If defective, replace FREQUENCY meter (HERTZ), paragraph 2.28.
b.
If FREQUENCY meter (HERTZ) is not defective, notify next higher level of maintenance
23.
AC VOLTMETER (VOLTS AC) VOLTAGE FLUCTUATES.
Step 1.
Check for loose electrical connections, refer to Electrical Schematic FO-1
a.
If no loose connections, do step 2.
b.
If loose, tighten electrical connections.
Step 2.
Test for defective AC Voltmeter (VOLTS AC), paragraph 2.31.2.
a.
If AC Voltmeter (VOLTS AC) is not defective, do step 3.
b.
If defective, replace AC Voltmeter (VOLTS AC), paragraph 2.31.
Step 3.
Test for defective VOLTAGE adjust potentiometer, paragraph 2.33.3.
a.
If VOLTAGE adjust potentiometer is not defective, do step 4.
b.
If defective, replace voltage adjust potentiometer, paragraph 2.33.
Step 4.
Test for defective AM-VM transfer switch, paragraph 2.38.3.
a.
If AM-VM transfer switch is not defective, notify next higher level of maintenance
b.
If defective, replace AM-VM transfer switch, paragraph 2.38
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