As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
#2 ENGINE FMC CDU SHOWS FAULT CODE 73-21272. ALT. VOLTAGE TO EEC OUT OF RANGE. GROUNDED - YES. REMOVED AND REPLACED STATOR ALTERNATOR HOUSING REF: B737-800 AMM 73-21-08. PERFORMED ENGINE RUN EEC BITE CHECK, NO FAULTS FOUND. REF: AMM 71-00-00.