Lincoln Electric IDEALARC DC-655 Service Manual page 61

F-19
TROUBLESHOOTING & REPAIR
FIRING BOARD TEST (continued)
TABLE F.1 - LED 7, 8, 9 AND 10
IF
LED 7 is ON
LED 7 is not lit or is dimmer than
the other LEDs
LED 8 is ON
LED 8 is not lit or is dimmer than
the other LEDs
LED 9 is ON
LED 9 is not lit or is dimmer than
the other LEDs
LED 10 is ON
IDEALARC DC-655
THEN
32 VAC power is being supplied to the
firing board from leads #203 and
#204 connected to the phase angle
winding in the Main Transformer.
Normal is 32 VAC.
The proper AC voltage may not be
reaching the firing board. Check for
loose or faulty connections. Perform
the Main Transformer Test.
32 VAC 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 power may not be
reaching the firing board. Check for
loose or faulty connections. Perform
the Main Transformer Test.
32 VAC 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 power may not be
reaching the firing board. Check for
loose or faulty connections. Perform
the Main Transformer Test.
This indicates the trigger circuit is
activated at the 14-pin receptacle or
the terminal strip or that the Output
Terminal Switch (SW5) is closed.
F-19