DH-10 Heads & Controls OPERATOR'S MANUAL ... - Lincoln Electric

E-5PROBLEMS(SYMPTOMS)Cold feed forward or cold feedreverse buttons on keypad do notwork, but motor control otherwisefunctions properly for both motors.TROUBLESHOOTINGObserve all Safety Guidelines detailed throughout this manualPOSSIBLECAUSE1. The connector from the controlp.c. board to the display p.c.board or the connector from thedisplay p.c. board to the keypadare loose or improperly inserted.2. Damaged keypad3. Damaged display p.c. board.4. Damaged control p.c. board.RECOMMENDEDCOURSE OF ACTIONE-5Gas purge key does not operatethe gas solenoid, but gas flow doesoccur while welding.1. The connector from the controlp.c. board to the display p.c.board or the connector from thedisplay p.c. board to the keypadare loose or improperly inserted.2. Damaged keypad3. Damaged display p.c. board.4. Damaged control p.c. board.If all recommended possible areasof misadjustment have beenchecked and the problem persists,Contact your local LincolnAuthorized Field Service Facility.CAUTIONIf for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact yourLocal Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.DH-10