Lincoln Electric IDEALARC DC-1000 Service Manual page 59

F-25
IF
LED 7 is ON
LED 7 is OFF or is DIM-
MER than other LEDs
LED 8 is ON
LED 8 is OFF or is DIM-
MER than other LEDs
LED 9 is ON
LED 9 is OFF or is DIM-
MER than other LEDs
TROUBLESHOOTING AND REPAIR
FIRING BOARD TEST (continued)
TABLE F.1 – LED 7, 8 AND 9 CHECK LIST
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.
Check for loose or faulty connections. 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.
Check for loose or faulty connections. 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.
Check for loose or faulty connections. Perform Main
Transformer Test.
IDEALARC
THEN
® DC-1000
F-25