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TROUBLESHOOTING & REPAIR
F-14 F-14
RANGER 9 RANGER 9
TROUBLESHOOTING GUIDE Observe Safety Guidelines
detailed in the beginning of this manual.
PROBLEMS
(SYMPTOMS)
POSSIBLE AREAS OF
MISADJUSTMENT(S)
RECOMMENDED
COURSE OF ACTION
FUNCTION PROBLEMS
Output control on welder not func-
tioning.
1. Make sure the REMOTE switch
(S4) is in the MACHINE CON-
TROL position.
2. The Output Control (R3) may be
defective.
1. Check the Output Control (R3).
Normal resistance is 10,000
ohms. Replace if defective.
2. Check the REMOTE switch (S4)
and associated wiring. See
Wiring Diagram (Leads 75, 76,
and 77).
3. The Printed Circuit board may
be faulty. Replace.
Remote output control not func-
tioning.
1. Make sure the REMOTE switch
(S4) is in the REMOTE position.
2. The remote control unit may be
defective. Repair or replace.
1. Check the REMOTE switch (S4)
and associated wiring. See
Wiring Diagram (Leads #75, 76
and 77).
2. The bypass PC board may be
faulty. Check or replace.
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
216-383-2531 or 1-800-833-9353.