Troubleshooting and repair, Test procedure – Lincoln Electric POWER MIG SVM157-A User Manual
Page 50
TROUBLESHOOTING AND REPAIR
F-16
F-16
POWER MIG 200
WIRE DRIVE MOTOR AND TACHOMETER FEEDBACK TEST
(continued)
FIGURE F.4. – PLUG J4
Black
Tach
J11
Black
Arm
White
Arm
Blue
Tach
Red
Tach
TEST PROCEDURE
NOTE: POLARITY MUST BE OBSERVED
FOR THESE TESTS.
Test for correct wire drive motor armature
voltage.
1. Disconnect main input power to the
machine.
2. Open the side panels and remove the
tool tray using a 5/16” nutdriver.
3. Locate plug J4 on the wiring harness.
See Wiring Diagram.
4. Locate the black and white armature
leads on plug J4. See Figure F.4.
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