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RIGHT SIDE OF MACHINE
(NZL)
WRK
(EL)
Harness
Plug
Plug J1
LEAD 3
LEAD 2
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TROUBLESHOOTING & REPAIR
F-15 F-15
PRO-CUT 25
10. Remove the torch consumables. (Shield
cup, Nozzle and Electrode)
11. With the Torch Consumables removed test
the output diodes. (D10 and D11) See the
Wiring Diagram.
12. With the Torch Consumables removed test
the snubber diodes. (D8 and D9) See the
Wiring Diagram. See Figure F.5.
13. Replace the torch consumables
previously removed. Check the resistance
across output diode D11. The resistance
should be very low, near or at zero ohms.
This verifies that the pilot arc circuit is
complete. See the Wiring Diagram.
MAIN INVERTER BOARD RESISTANCE TEST (continued)
D10
D8
D9
D11
Figure F.5