As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 6389 - PHX-YUM - DURING TAXI-OUT, THE CREW HAD AN OVERHEAD EMERGENCY LIGHT INOPERATIVE AND THE MAIN DOOR EMERGENCY EXIT SIGN INOPERATIVE. THE PROBLEM WAS TROUBLESHOT TO THE EMERGENCY LIGHT BATTERIES. MAINTENANCE REMOVED AND REPLACED THE 1, 2 AND 3 POWER SUPPLIES AS REQUIRED. OPS CHECKED GOOD AND THE AIRCRAFT RETURNED TO SERVICE. (M)