As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AVIONICS MAU 1 A FAIL CAUTION MESSAGE IN FLIGHT. FOUND MAU 1, POWER 1 CIRCUIT BREAKER ON LT CIRCUIT BREAKER PANEL OUT. RESET CIRCUIT BREAKER AND PERFORMED FIM TASK 31-42-00-810-808-A. CHECKS OK. RESET MAU 1, NIC 1, AMM 45-45-00. PERFORMED RETURN TO SERVICE IAW AMM 27-00-00-070-801-A.