Lincoln Electric BULLDOG SVM208-A Service Manual page 66

F-18
ROTOR "FLASHING" CIRCUIT TEST (continued)
FIGURE F.3 – BRUSH HOLDER LEADS 201(-) AND 202B (+)
SLIP
RINGS
PROCEDURE
1. With the 3/8" nutdriver, remove the 20 sheet
metal screws that hold the top cover to the con-
trol box. Remove the top cover.
2. Locate and remove lead #201A from the brush
holder. See Figure F.3 for location.
TROUBLESHOOTING AND REPAIR
FIGURE F.4 – DIODE BRIDGE LEAD ASSIGNMENTS
7
201
201
–
BULLDOG® 140
3. Connect the negative (-) lead of the DC amme-
ter to lead #201A and the positive (+) lead to the
brush holder.
4. Remove lead #7 from field diode bridge rectifier
D2. See Figure F.4. Electrically isolate the
lead.
200
200C
+
9
F-18
201A(-)
202A(+)