What was found
DURING CLIMBOUT, AFT SERVICE DOOR (R2) OPEN EICAS MESSAGE DISPLAYED. RAN QRH, A/C PRESSURE WAS NORMAL AND DOOR INDICATIONS WERE ALL GREEN. FA PUSHED DOWN ON ARMING LEVER AND MESSAGE EXTINGUISHED. MAINTENANCE PERFORMED ADJ TEST ON R2 DOOR IAW EMB 170 MM 52-42-00. FOUND DOOR SHOWING CLOSED WHEN ARMED AND OPEN WHEN DISARMED, OPERATING NORMALLY.