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Bridge assembly mount, Troubleshooting & repair – Lincoln Electric MULTI-SOURCE SVM155-A User Manual

Page 82

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F-54

F-54

TROUBLESHOOTING & REPAIR

MULTI-SOURCE

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SCR BRIDGE / HEAT SINK ASSEMBLY REPLACEMENT PROCEDURE

REMOVAL PROCEDURE

1.

Disconnect input power to the machine.

2. Using a 3/8” nut driver, remove the case

sides and roof.

3. Locate, label, and remove leads #301 and

#264 from the thermostat. See Figure F.26.

4. Lower the control panel using a 3/8” nut

driver.

5. Remove plug J4 from the firing board and

feed the disconnected plug down through
the hole in the bottom of the P.C. board
control box.

L E F T S I D E

L E F T S I D E

9/16" Bolts

#264

#301

FIGURE F.26. Bolt and Lead Locations

Bridge
Assembly
Mount