Lincoln Electric INVERTEC V160 Service Manual page 36

TEST PROCEDURE
1. Remove main input power to the Invertec V160
2. Remove the four screws in the rear panel of the
machine
3. Pull the rear panel and take out the handle
4. Pull up carefully the red cover and disconnect the
ground connection
5. Take out the red cover
6. Perform the Discharge procedure
7. Visually check for burned or damaged
components on the input board. If any
components are physically damaged
determined to be faulty the input board should be
replaced.
8. Apply 230 Vac input to the V160 machine.
9. Check between terminals AC1 and AC2 for
230Vac.
10. Check between terminals DC + and DC – for
325 Vdc
BACK
INPUT PCB - Component Side ( Tig version )
JP2
JP1
connector
connector
11. Use pin 12 of a JP1 connector as a ground and
check pin 6 for -5V dc, pin 8 for +15 Vdc and
pin 10 for + 5 Vdc. ( see the wiring diagram
X0187 )
12. Check between pin 1 and 2 of the JP2 connector
For 15 Vdc ( fan supply voltage ) ( see the
wiring diagram X0187 )
DC+ /
DC-
Terminals
AC1 / AC2
Terminals
36