What was found
"ATC DECARED EMERGENCY CREW REPORTS LND GEAR MONITOR, NOSE A/G DISAGREE, AIR/GROUND DISAGREE STATUS MESSAGES DISPLAYED IN FLIGHT UPON LANDING NO AUTOBRAKES, NO GROUND SPOILERS, NO THRUST REVERSERS AVAILABLE ON TAXI IN MN CARGO DOOR, + L REV ISLN VAL STATUS MESSAGE DISPLAYED ""UNABLE TO ARM AUTOBRAKES INFLIGHT""MTX GROUNDED A/C AND REPLACED PSEU IAW AMM 32-09-04 OPS CHECK GOOD NO FAULTS NOTED AT THIS TIME, INITIALLY FOUND AIR/GRND CIRCUIT BREAKER POPPED AND WOULD NOT RESET. AFTER REPLACING PSEU CIRCUIT BREAKER STAYS IN. NO MESSAGES. RETURNED AC TO SERVICE LP:39036-81/1-2"