As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AND EMERGENCY LIGHT EPSU TEST, CENTER POSITION 2001VU GIVES THE MAINTENANCE MESSAGE FOR A FAULT IN THE AFT GALLEY AREA. REPLACED THE POWER SUPPLY IAW AMM 33-51-38-400-001-A, AND PERFORMED OPERATIONAL TEST OF THE EMERGENCY LIGHT NOT WITH CIDS IAW AMM 35-51-00-710-006-A, TESTED OK.