As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE PERFORMING EMERGENCY LIGHT OPS CHECK. FOUND AFT CEILING EXIT SIGN AFT GALLEY IS INOP. LIGHT ANR VERY DIM. ACFT GROUNDED. DISCONNECTED D10180, NO GROUND AT PIN 8. DEPINNED GD3998-DC. BLOCK WAS REMOVED AND REPLACED REPINNED GD3998-DC. OPS GOOD IAW 33-51-00-720-801.