As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PDC CK - DISPATCH MSG CABIN EMERGENCY EXIT LIGHT. PERFORMED EPSU SYSTEM TEST AND FAULTED DOOR 3L LIGHT UNIT. CONFIRMED EXTERIOR LIGHT INOP. R & R LIGHT ASSEMBLY P/N 8607-2-00 AND OPS TEST OK IAW A350 AMM 33-51. OK FOR SERVICE. (LP# 8151470)