What was found
LEFT ENGINE THROTTLE LEVER. UPON RUNWAY LINE-UP, FIRST OFFICER ADVANCED THROTTLES, LEFT THROTTLE DID NOT ADVANCE BEYOND THE CONTROL LOCK POSITION. CONTROL LOCK WAS NOT ON, AND NO CAS MESSAGES WERE DISPLAYED. PERFORMED VOLTAGE AND RESIISTANCE CHECKS OF CONTROL LOCK PROX SWITCH'S IAW WDM 22-30-01 WITH NO DEFECTS NOTED. DURING CONTROL LOCK OPS CHECKS FOUND AUTO THROTTLE INTERNAL LOCKING SOLENOID INTERMITTENT. REMVOED AUTO THROTTLE ASSEMBLY AND INSTALLED INSPECTED CONDITION AUTO THROTTLE ASSEMBLY IAW AMM 22-30-05. PERFORMED OPS AND FUNCTIONAL CHECKS IAW AMM 22-30-00 AND 71-00-00. OPS AND FUNCTIONAL CHECKS GOOD NO DEFECTS NOTED.