What was found
STABILIZER TRIM EICAS WITH ASSOCIATED TRIM LIGHT ILLUMINATED. ACCOMPLISHED CK OF STABILIZER TRIM SYSTEM AND FOUND LEFT CHANNEL FAULT. LEFT SAM SHOWED STCM AND PRESS SWITCH FAULTS. RESET BOTH SAMS, NO HELP. ALSO REPLACED LEFT SAM NO HELP. LEFT NEW UNIT INSTALLED. MR22167-92 OFF, -17 ON, IN LEFT POSITION. FOUND LEFT SAM FAILED, REPLACED LEFT SAM, NO OTHER FAULTS INDICATED. LEFT SYSTEM FUNCTIONS NORMAL.