What was found
AT FL 370 HAD MAIN CARGO DOOR LIGHT, WENT OUT AROUND 16,000 FT. TROUBLESHOT IAW FIM 52-71 FIGURE 104B. PERFORMED FAULT HISTORY IAW FIM 32-09 & FOUND NO FAULTS LOGGED. PERFORMED PSEU BITE TEST & BITE TEST PASSED. PERFORMED RESISTANCE CHECK OF PROXIMITY SENSOR & SENSORS READ WITHIN LIMITS. PERFORMED PSEU TARGET TEST & ALL TARGET TESTS PASSED. INSPECTED GAP CLEARANCE, DOOR CLOSED SENSOR, DOOR LATCHED SENSOR & DOOR LOCKED SENSOR. FOUND SENSOR MISALIGNED WITH TARGET. ADJUSTED IAW MM 52-71-09-2. RETESTED PROXIMITY SENSORS & TARGETS AFTER ADJUSTMENT & ALL TESTS PASSED. MAIN CARGO DOOR INDICATION SYS CHECKED GOOD. CHECKED DOOR WARNING SYS IAW MM 52-71-00-5. ALL CHECKS PASSED OK.