flow chart - MK Products

3 FLOW CHART 3SYMPTOMCOBRA: MAIN BOARD, F1 FUSE IS BLOWNPROBLEM AREACOBRA: MAIN BOARD OR TORCH MOTORSTARTYESIS COBRA MAINBOARD F1 FUSE OK?NOGO TO FLOW CHART #4COBRA I MAIN BOARD, F1 ANDF3 ARE OK, BUT WIRE FEEDAND TORCH NOT OPERATIVEUNPLUG TORCH AMPHENOLFROM COBRA FRONT PANELJUMPER "E" AND "F" ON EITHEROF THE COBRA FRONT PANELAMPHENOL CONNECTORSNOIS COBRA MAINBOARD F1 FUSE OK?YESCOBRA I MAIN P.C. BOARD ISDEFECTIVEMOTOR LEADS ARE SHORTEDOR MOTOR IS DEFECTIVENOTE :MOTOR CHECKa. Remove the amphenol connector from the cabinet.b. Using an OHM meter, check the resistance across pins "A" and "B" (motor leads)on torch amphenol. The resistance across the motor should be between 5 and 10 ohms.c. If an open circuit or short circuit condition exists, check the motor leads and motorindependently.CobraMig 260 Owner's Manual - Page 22