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TROUBLESHOOTING & REPAIR
F-7 F-7
RANGER 300 D AND 300 DLX
TROUBLESHOOTING GUIDE OBSERVE SAFETY GUIDELINES
DETAILED IN THE BEGINNING OF THIS MANUAL.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con-
tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
1-800-833-9353.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
OUTPUT PROBLEMS
No auxiliary power at receptacles
- welding output is normal - engine
runs normally.
1. If the machine is equipped with
circuit breakers, check circuit
breakers. Reset if tripped.
2. Make sure the output control
(R1) is set at the maximum
position.
3. Check for a loose or faulty
plug(s) at the power recepta-
cles.
1. Check the auxiliary power
receptacles and associated
wires for loose or faulty con-
nections.
2. Perform the Auxiliary and
Field Winding Voltage Test.