Lincoln Electric SVM138-A Welder User Manual


 
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TROUBLESHOOTING & REPAIR
F-60 F-60
LN-9 GMA Wire Feeder
PROCEDURE
1. Remove input power to the LN-9 GMA.
2.
Using the phillips head screwdriver remove the
screws holding the left side cover assembly.
3. Lift the cover.
4. Disconnect primary lead #532 from the power
PC board terminal.
5. Disconnect the primary lead #31 from the R1
(2 ohm) resistor. See Figure F.17. Upon
reassembly this lead will have to be soldered
onto the R1 resistor.
T1 TRANSFORMER REMOVAL AND REPLACEMENT (continued)
FIGURE F.17 – PRIMARY LEAD #31 AT R1 RESISTOR
LEAD 31
LEAD 532
R1 RESISTOR