What was found
ON GEAR RETRACTION, NLG DOOR INDICATOR ILLUMINATED ON BOTH GEAR INDICATOR PANELS. COMPLIED WITH QRH AND RETURNED TO AFW. PROXIMITY BOX SHOWING CODE 32 W/ BOX FAULT LIGHT ON. T/S PER A300 TSM 32-30-00. BITE TEST PROXIMITY DETECTOR PROCESSING UNIT (54GB), PER M/M 32-31-71-04 FOUND FAULT CODE 32. NLG DOOR MICROSWITCH, ISOLATED TO (33GB) SWITCH AT FAULT. REMOVED AND REPLACED (33GB) SWITCH, IAW A300 M/M 32-00-00-4. REMOVED AND REPLACED DETECTOR PROCESSING UNIT (54GB), IAW A300 M/M 32-31-71-04 AND LUBRICATE NLG DOOR OPERATIONS VERIFED NORMAL. A/C OK FOR SERVICE.