Input Board Location - Lincoln Electric POWER WAVE S500 Service Manual

F-54
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.
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1. Remove the input power to the Power Wave
S500 machine.
2. Perform the Case Cover Removal and
Capacitor Discharge Procedure.
3. Locate the Input Board located on the upper
right side of the machine. See Figure F.20.
NOTE: To gain access to the Input Board the insu-
lating cover will have to be removed. Cut
the three cable ties securing the insulating
cover.
4. Perform the Input Board diode checks per
Table F.17 and Figure F.21.
TROUBLESHOOTING AND REPAIR
INPUT BOARD TEST (continued)
FIGURE F.20 – INPUT BOARD LOCATION
can kill.
POWER WAVE
5. Locate the Green LED on the Input Board. See
Figure F.21. See Wiring Diagram.
6. Carefully apply the correct three phase input
power to the Power Wave
7. If the Green LED is lit, the Input Board is receiv-
ing input power. See Figure F.21.
8. If the Green LED is not lit, the Input Board is not
receiving input power.
9. Carefully perform the voltage tests per Table
F.18. See Figure F.21.
®
10. If the correct input voltage is being applied to
the Input Board and the correct output voltages
are not being generated the Input Board may
be faulty.
11. If faulty, perform the Input Board Removal
and Replacement Procedure.
replace the insulating cover on the Input Board.
12. Perform the Case Cover Replacement
Procedure.
13. Perform the Retest After Repair.
® S500
INPUT
BOARD
® S500 machine.
Be sure to
F-54