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TROUBLESHOOTING & REPAIR
SERIAL LOOP WIRING HARNESS TEST (continued)
FIGURE F.37 - WIRE FEEDER AMPHENOL LOCATIONS
1
1. WIRE FEEDER CONNECTIONS (ON BACK PANEL)
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TEST PROCEDURE
1.Remove main input supply power to the machine.
2.With the 3/8" nut driver, remove the 4 screws that hold the handle to the machine.
3.Remove the rubber gasket (cover seal) from the lift bail.
4.With the 5/16" nut driver, remove the sheet metal screws from the case top.
5.With the 5/16" nut driver, remove the screws holding the right and left case sides. Remove the case sides by lifting up and out.
6.Perform the Capacitor Discharge Procedure described earlier in this section of the manual.
WARNING
Before continuing with the test procedure, perform the capacitor discharge proce- dure to avoid electric shock.
7.After you have completed the capacitor dis- charge procedure for all four switch boards, remove the PC board cover. Use the 5/16" nut driver.
8.Perform the following test for faults on the serial loop circuitry between wire feeder 1 amphenol (P83) and the control board.
A. Disconnect the wire feeder from the wire feeder 1 amphenol (P83).
