As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SERVICE CHECK COURIER COMPARTMENT EMERGENCY LIGHT TEST, EMERG TEST PUSH- BUTTON ON 818VU PANEL DOES NOT ILLUMINATE. EMERGENCY LIGHTS ILLUMINATE. TEMP INSTALLED NEW POWER UNIT 29WL1 NO HELP REINSTALLED ORIGINAL 29WL REF A300 MM 33-51-14-04. RELAMPED LH AND RH OVHD DOOR EXIT SIGNS C/W EMER TEST 25WL LIGHT ILLUMINATES ONCE TEST IS COMPLETE EMER LIGHT TEST CKS GOOD REF A300 MM 33-51-00-5-9