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ELECTRICAL TROUBLESHOOTING & REPAIR

BASIC TROUBLESHOOTING PROCEDURES

Check ·that Control Panel Switches are set for the desired Operation Procedure. See Page A10. Determine which function is not operating. Determining whether Electrical, Hydraulic or Mechanical System or a combination of these systems are at foul t. If involved solenoid is not operating when trying to activate function, the cause of malfunction may be electrical. Refer to El'ectrical Trouble- · shooting Section and check the involved circuit. If involved Solenoid is operating, the cause may be hydraulic. If determined that pump pressure exists, the trouble is then mechanical • Refer to the Mechanical & Hydraulic Section. solenoids do not operate, attempt to actuate them manually. If plunger snaps into place and it is -determined that the solenoid is energized, the trouble is then me– chemical. Refer to the Hydraulic & Mechanical Section. IMPORTANT: If ~J

From the Library of Superior Sewing Machine & Supply LLC