Lincoln Electric SVM138-A Service Manual page 83

F-19
TROUBLESHOOTING GUIDE
PROBLEMS
(SYMPTOMS)
The SET and actual speed meter
readings match within a few IPM,
but both are in error.
SET speed and actual speed meter
readings do NOT match within a
few IPM. One or both readings
may be erratic.
INSTALLATION
POSSIBLE AREAS OF
MISADJUSTMENT(S)
METER FUNCTION PROBLEMS
1. Contact your local Lincoln
Authorized Field
Facility.
1. Contact your local Lincoln
Authorized Field
Facility.
LN-9 GMA Wire Feeder
Observe Safety Guidelines
detailed in the beginning of this manual.
RECOMMENDED
COURSE OF ACTION
1. Perform the
Service Alignment Procedure.
2. Perform the Meter Circuit
Accuracy Test.
3. The control PC board may be
faulty. Replace.
1. Check the Volts-Speed meter
Service selector switch and the associ-
ated wiring.
Diagram.
2. Check the SET-ACTUAL switch
and the associated wiring. See
the Wiring Diagram.
3. Perform the
Alignment Procedure.
4. Perform the Meter Circuit
Accuracy Test.
F-19
Hall Effect
See the Wiring
Hall Effect