Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

F-24

TROUBLESHOOTING & REPAIR

F-24

 

 

FIRING BOARD TEST

TABLE F.1 - LED 7, 8 and 9 Check List

IF

THEN

LED 7 is ON

AC power is being supplied to the Firing Board from

 

leads #203 and #204 connected to the phase angle wind-

 

ing in the Main Transformer.

 

 

LED 7 is OFF or is DIM-

The proper AC voltage may not be reaching Firing Board.

MER than other LEDs

Check for loose or faulty connections. Perform Main

 

Transformer Test.

 

 

LED 8 is ON

AC power is being supplied to the Firing Board from

 

leads #205 and #206 connected to the phase angle wind-

 

ing in the Main Transformer.

 

 

LED 8 is OFF or is DIM-

The proper AC voltage may not be reaching Firing Board.

MER than other LEDs

Check for loose or faulty connections. Perform Main

 

Transformer Test.

 

 

LED 9 is ON

AC power is being supplied to the Firing Board from

 

leads #207 and #208 connected to the phase angle wind-

 

ing in the Main Transformer.

 

 

LED 9 is OFF or is DIM-

The proper AC voltage may not be reaching Firing Board.

MER than other LEDs

Check for loose or faulty connections. Perform Main

 

Transformer Test.

 

 

IDEALARC DC-1000

Page 64
Image 64
Lincoln Electric SVM123-A service manual Table F.1 LED 7, 8 and 9 Check List, Then