As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD DOOR ESCAPE SLIDE PACK ASSEMBLY INSTALL {A3NB-25-3-0020} - EMERGENCY SYSTEM LIGHTS BITE CHECK FAILS (NO SYS OK LIGHT) WITH STATUS MESSAGE (EPSU INT LOAD FWD L) REMOVED AND REPLACED BATTERY OF EPSU IAW AMM 33-51-38. OPS CHECK GOOD.