Lincoln Electric RANGER 305 D Service Manual page 110

RANGER 305D
W3
W2
W1
W4,W5
To test the 120 V C wire feeder supply:
NOTE: The wire feeder AC voltage supply tests require that
the meter probes be inserted into the Amphenol connection
cavities. Care should be taken to avoid damaging or
expanding the terminals when inserting the probes.
NOTE: The 120 VAC power supplied to the 14 pin Amphenol
connector originates from the same winding that supplies the
120 VAC receptacles. If the machine has previously passed
120VAC auxiliary winding test, this test can only reveal
problems in connections or components between the
Amphenol and the stator winding.
1. Connect the voltmeter probes to pins "A" (lead #32)
and "J" (lead #31) of the 14 pin Amphenol. See
figure #3 and wiring diagram.
ST TOR VOLT GE TESTS (continued)
FIGURE F.13 – RECTIFIER BRIDGE DET IL
POS.
W10
F 53
NEG.
W6,W11
FROM SHUNT
2. Start the engine and run it at high idle (3625 to
3675 RPM).
3. The AC voltage reading should be between 120 and
135* VAC.
4. If these voltage readings are not within specifi-
cations, check for a tripped or defective circuit
breaker, faulty connections, or broken wires
between the test points and the stator windings.
See wiring diagram.
TROUBLESHOOTING & REPAIR