Lincoln Electric IDEALARC DC-600 Service Manual page 70

F-26
LED 7 is ON
LED 7 is OFF or is
DIMMER than other LEDs
LED 8 is ON
LED 8 is OFF or is
DIMMER than other LEDs
LED 9 is ON
LED 9 is OFF or is
DIMMER than other LEDs
TROUBLESHOOTING AND REPAIR
FIRING BOARD TEST (continued)
TABLE F.1 - LED 7, 8 and 9 Check List
IF
AC power is being supplied to the Firing Board from
leads #203 and #204 connected to the phase angle
winding in the Main Transformer.
The proper AC voltage may not be reaching Firing
Board.
Perform Main Transformer Test.
AC power is being supplied to the Firing Board from
leads #205 and #206 connected to the phase angle
winding in the Main Transformer.
The proper AC voltage may not be reaching Firing
Board.
Perform Main Transformer Test.
AC power is being supplied to the Firing Board from
leads #207 and #208 connected to the phase angle
winding in the Main Transformer.
The proper AC voltage may not be reaching Firing
Board.
Perform Main Transformer Test.
IDEALARC
THEN
Check for loose or faulty connections.
Check for loose or faulty connections.
Check for loose or faulty connections.
® DC-600
F-26