Lincoln Electric LN-25 SVM114-C - Manual (Page 58)

TROUBLESHOOTING AND REPAIR F-20 F-20
LN-25™
TEST PROCEDURE
1. Open the case door. Remove the wire reel by
removing the retaining collar. See Figure F.5.
2. Remove the screws holding the control box
cover in place and remove the control box
cover. See Figure F.5.
3. Locate the three hall effect leads 500, 512 and
555 incor porated in plug J4 on the Control
Board (for codes 9812 and below, the leads
connect directly to the Control Board). Do not
disconnect the leads from the board. See
Figure F.9, or F.10. See Figure F.11 for codes
above 10500.
HALL EFFECT MODULE TEST (continued)
FIGURE F.9 – CONTROL PC BOARD (CODES 10148 THRU 10500).
FIGURE F.10 – CONTROL PC BOARD (CODES 9812 AND BELOW).
J4 J3 J1 J2
541
539
555 541
539
555
500 512
G2196 G2196
539 541
512 555 500
G1757 G1757
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