TC reported rear cab entry illuminated.Staff (BDL) checked and confirmed no abnormalities. ~~~~~ 3539 TC reported rear cab entry illuminated. Staff (BDL) checked and confirmed no abnormalities.  3540 cab partition door open/close function check - OK. Able to lock positively. Check #3539 'REAR CAB ENTRY' indication not lighted when #3540 partition door was closed. As a precaution, tightened all door hinges, 'L' bracket mechanism at #3540 cab partition door.  Chan SW/Hanafi 44215