Table 3-2. Troubleshooting (Cont)
a. Defective VOLT-AMP transfer
does not in-
b. Defective voltage adjust rheo-
b. Replace defective voltage adjust rheo-
c. Defective ac voltmeter.
a. Engine speed too slow.
speed with manual speed control
age, but fre-
is off scale.
b. Defective frequency meter.
Replace frequency transducer (para.
c. Defective frequency trans-
17. AC voltage
a. Loose electrical connection.
a. Inspect electrical system and make any
repairs necessary (figures FO-1 and
b. Defective VOLT-AMPS selector
b. Replace VOLT-AMPS SELECTOR
c. Defective voltage adjust rheo-
c. Replace voltage adjust rheostat (para.
d. Defective ac voltmeter.
a. Erratic engine operation.
a. Refer to malfunction 5 of this table.
b. Defective frequency adjust
b. Replace frequency adjust rheostat
rheostat (Class 1 sets only).
c. Defective frequency meter.
d. Defective frequency trans-
d. Replace frequency transducer (para.
19. Main AC con-
a. Defective circuit breaker switch.
a. Inspect, test S3. Replace if defective
b. Defective Main Load Contactor
will not close
c. Defective reverse power relay K15
b. Disconnect electrical connector (P&J41
4) from Main load contactor (CB2).
breaker switch (S3) in closed position, using
d. Defective undervoltage relay
K11 (Precise Sets Only).
a voltmeter, test for 28 VDC at J41, recep-
if defective. If 28 VDC is not present, notify
higher level maintenance.
lay K12 (Precise sets only).
f. Defective permissive parallel-
ing relay K16 (Precise sets only).
g. Defective contactor switch S3.