As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT LOWER CEILING PANEL CENTER EMERGENCY EXIT SING INOP<[01] PERFORMED TROUBLESHOOTING CENTER EMERGENCY EXIT SING AS PER B737 WDM 33-51-14. FOUND FUSE DEFECTIVE. REPLACED EMERGENCY POWER SUPPLY FUSE PER REF. B737 AMM 33-51-06-960-804.PERFORMED EMERGENCY LIGHTS OPERATIONAL TEST PER REF. B737 AMM 33-51-00-710-801.OPS TEST PASSED.;[02] VERIFIED STEP 1