Input Choke - Lincoln Electric POWER WAVE C300 Service Manual

F-89
SWITCH BOARD ASSEMBLY REMOVAL AND REPLACEMENT PROCEDURE
B28
INPUT
CHOKE
CONNECTIONS
B29
13. Carefully place the new Switch Board
Assembly into position in the chassis.
14. Secure the Switch Board Assembly to the
chassis with the four screws and washers pre-
viously removed.
15. Connect leads 410 and 409 to the heat sink
thermostat.
16. Connect the cable clamp to the top aluminum
extrusion.
17. Reconnect the positive output cable.
TROUBLESHOOTING AND REPAIR
(continued)
FIGURE F.34 – SWITCH BOARD LEADS
POSITIVE OUTPUT
CABLE CONNECTION
POWER WAVE® C300
CHOPPER
BOARD
PLUG J45
CONNECTOR
J28
18. Reconnect all of the leads previously removed.
See Figure F.34.
19. Replace the five molex plugs previously
removed. See Figure F.34.
20. Clear and position all leads.
21. Replace the case cover. See the Case Cover
Removal and DC Link Capacitor Discharge
Procedure.
22. Perform the Retest After Repair Procedure.
F-89
OUTPUT CHOKE
CONNECTIONS
BL1
LEAD A
BL2
LEAD A2
BL3
LEAD A3
BL4
LEAD A4
BL5 LEAD A5
BL6
LEAD A6
PLUG J43
INPUT PHASE
CONNECTIONS
B32
LEAD 3A
B30
LEAD 2A
B31
LEAD 1A
PLUG J42
PLUG J41