What was found
ON DEP MASTER WARING EICAS MESSAGE DOOR PAX AFT OPEN MSG PER ORH DOOR LOCK INDICATION SHOWED GREEN DOOR LATCH INDICATION 1 GREEN 1 WHITE-C/A-REINSPECTED DOOR ALL CHECKS GOOD CHANGED MEL FROM 52-22 TO 52-23 AUTHRIZATION NUMBER REMAINS THE SAME M PROC C/W. VERIFIED VISUAL INDICATOR DOES SHOW GREEN. M PROCEDURES FOR MEL 52-23 MEETS PROVISOS. REMOVED AND REPLACED THE POSITION INDICATOR SPRING IAW AMM 53-23-21, FURTHER TROUBLESHOOTING REQUIRES. MEL ITEM REMAINS OPEN. PERFORMED ADJUSTMENT OF AFT PASSENGER DOOR TO GET W GAP FOR LATCH SENSOR PER EMB MM 52-12-00-820-059-A. UNABLE TO ADJUST FOR W GAP. RIGGED DOOR TO PROPER Z MEASUREMENT AS PER EMB MM 52-12-00-820-059-A. MEL REMAINS OPEN. ADJUSTED AFT PAX DOOR COMMAND RAMP IAW EMB 175 AMM 52-12-00 OPS CHECKS GOOD. REINSTALLED AFT PASSENGER DOOR SURROUND IAW EMB 175 AMM 25-23-09. AND REINSTALLED AFT PASSENGER DOOR LINER IAW EMB 175 AMM 25-23-05.