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Speed Control Operates But Does Not Resume, Accelerate, Or Coast Down

  1. Test all switches. See CONTROL SWITCH & CIRCUIT TEST  . If switches are okay, go to next step. Repair as necessary.
  2. Test servo. See SERVO TEST  . If servo is okay, go to next step. Replace servo if defective.
  3. Temporarily substitute known good amplifier, then retest system. If amplifier is okay, recheck all electrical and vacuum connections.
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