What was found
FO OVHD LIGHT BULB EXPLODED ( COCKPIT/FLIGHTDECK/FLIGHT COMPARTMENT AND INSTRUMENT LIGHTING SYSTEMS ). REMOVED FROM SERVICE. REMOVED BROKEN FO'S READING LIGHT LAMP AND REPLACED IT WITH A SERVICABLE LAMP. IAW E175 AMM 33-11-03-000-801-A AND AMM 33-11-03-400-801-A. OPERATIONAL TEST GOOD IAW E175 AMM 33-11-00-710-801-A. THIS CLEARS DEFECT #1078104, MEL 33-10-00 MAINT PROCEDURES REVERSED, MEL PLACARDS REMOVED, MAINT CONTROL NOTIFIED. RETURNED TO SERVICE.