What was found
AFTER LANDING, DURING ROLLOUT, BEFORE FLAPS RETRACTED UP, MAINTENANCE LIGHT ILLUMINATED. GROUNDED - YES. COMPLIED BOTH FAULT INTERROGATION FOR MX MSG, FOUND NON ACTIVE FAULT MSG 77-43023. RESET LATCHED FAULT PER AMM 31-65-00. MX LIGHT EXTINGUISHED. SEAMC MARK NOTIFIED. (TSAR174M).