What was found
ABORTED TAKEOFF, RECEIVED NO TAKEOFF CONFIGURATION WARNING ON EICAS, FLAPS AT 9 DEGREES, SPOILER CLOSED, TRIM AT 7 DEGREES AND TL AT 75 PERCENT. REMOVED AND REPLACED EMERGENCY PARKING BRAKE PRESSURE SWITCH IAW EMB AMM 32-44-07, PERFORMED CONFIGURATION OPERATIONAL CHECK IAW AMM 31-51-00 WITH NO DEFECTS. RETURNED AIRCRAFT TO SERVICE.