Digital Control Board Location - Lincoln Electric POWER WAVE S500 Service Manual

F-22
DIGITAL CONTROL BOARD TEST (continued)
PROCEDURE
WARNING
ELECTRIC SHOCK
• Do not touch electrically live
parts or electrodes with your
skin or wet clothing.
• Insulate yourself from the work and ground.
• Always wear dry insulating gloves.
-------------------------------------------------------------------
1. Remove the input power to the Power Wave
S500 machine.
2. Perform the Case Cover Removal and
Capacitor Discharge Procedure.
3. Locate the Digital Control Board located on the
underside of the top case panel. See Figure
F.5.
4. Locate Plugs J4, J5, J8, J9, J5 and J12 located
on the Digital Control Board. See Figure F.6.
See Wiring Diagram.
TROUBLESHOOTING AND REPAIR
FIGURE F.5 – DIGITAL CONTROL BOARD LOCATION
can kill.
POWER WAVE
5. Care
fully apply the correct input voltage to the
Power Wave S500 machine.
®
6. Check for the correct operation of the LED
lights on the Digital Control Board. See Figure
F.6 and Table F.5.
7. Perform the voltage tests per Table F.6. See
Figure F.6.
8. Remove the input power to the Power Wave
S500 machine and perform the resistance
checks per Table F.7.
®
9. If the correct input voltage is being applied to
the Digital Control Board and the correct output
voltages are not being generated, the Digital
Control Board may be faulty.
10. If faulty, perform the Digital Control Board
Removal And Replacement Procedure.
11. Perform the Case Cover Replacement
Procedure.
12. Perform the Retest After Repair Procedure.
® S500
DIGITAL CONTROL
BOARD
F-22
®