As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMER LT BATT FAULT EICAS MESSAGE. RESET AFT CENTER EMERGENCY BATTERY PACK FOR EXIT LIGHT IAW EMB 170 MM 33-50-01. OPS CHECK GOOD. MAINTENANCE LATER REMOVED AND REPLACED MAU NR 3 GEN I/O SLOT 9/10 AND SPDA NR 2 DISCRETE I/O SLOT 9 AFTER TROUBLESHOOTING. OPS CHECK GOOD IAW EMB 170 MM 31-41-06, 24-11-05, AND 33-50-00.