As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 2030 - DCA - BOS - EMERGENCY EQUIPMENT - LEFT OVERWING SLIDE INDICATES DISARMED WHEN ALL DOORS CLOSED AND ARMED. ARMING L2 DOOR DISARMS LEFT OVERWING EXIT. REMOVED AND REPLACED SYSTEM DATA ACQUISITION CONCENTRATOR (SDAC) NR 1 PER MAINTENANCE MANUAL 31-55-34-000. OPERATIONAL CHECK WAS GOOD.