Lincoln Electric 11519 Service Manual page 62

F-16
RECTIFIER DIODE BRIDGE TEST (continued)
FIGURE F.2 — G4824 RECTIFIER DIODE BRIDGE LOCATION.
PROCEDURE
1. Disconnect the main AC input power to the
machine.
2. Remove the case top and side panels with a 3/8
in. nutdriver.
3. Perform the Main Transformer Test to ensure
the proper voltages are supplied to the J5 plug
on the Control board.
4. Locate the following leads:
TROUBLESHOOTING AND REPAIR
RECTIFIER
DIODE BRIDGE
(D2)
Power MIG® 255XT
LEAD
208
209
354
206
Leads #208R, #209R, and #354 are connected
to the rectifier diode bridge (D2). See Figure
F.2. Lead #206 is connected at the output
shunt. See the Wiring Diagram.
5. Connect main input power to the machine.
F-16