As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING MX, FOUND LEFT FORWARD EMERGENCY EXIT SIGNS INOPERATIVE. ACFT REMOVED FROM SERVICE. R & R POWER SUPPLY UNITS IAW JIC33-51-21, RAI10000 AND R & R THE POWER SUPPLY BATTERIES IAW RAI 10010. THE OPS CHECKED GOOD. ACFT RETURNED TO SERVICE.