User Interface Board Test Procedure - Lincoln Electric FlexCut 200 Service Manual

LINCOLN ELECTRIC

USER INTERFACE BOARD TEST PROCEDURE

Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized
repairs performed on this equipment may result in danger to the technician or machine operator and will
invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety
notes and precautions detailed throughout this manual. If for any reason you do not understand the test
procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department
for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This test will determine if the User Interface Board is functioning properly.
MATERIALS NEEDED
Volt/Ohmmeter
Wiring Diagram
TEST PROCEDURE
1. Carefully remove input power from the FlexCut 200 machine.
2. Perform the Case Cover Removal Procedure.
3. Perform the Capacitor Discharge Procedure.
4. Locate the user interface board, on the rear of the front panel. See Figure F.20. See Wiring
Diagram.
5. Carefully apply the correct input power to the machine and turn ON the machine.
6. Using a volt/ohmmeter, check for the presence of 40 VDC at plug J1 pins 3 and 4. See Figures F.21
and F.22. See Wiring Diagram.
7. If the 40 VDC is not present, perform the 40 VDC Bus Board Test Procedure.
8. If the 40 VDC is present, continue with this test.
9. Using a volt/ohmmeter, check for the presence of 2 VDC at plug J1 pins 1 and 2. See Figures F.21
and F.22. See Wiring Diagram.
10. Perform the LED inspections outlined in Tables F.4 and F.5. See Figure F.21. See Wiring Diagram.
11. Carefully remove input power from the FlexCut 200 machine.
12. If any of the tests fail, the user interface board may be faulty.
13. If faulty, perform the User Interface Board Removal And Replacement Procedure.
14. Perform the Case Cover Replacement Procedure.
FlexCut® 200 Service Manual
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