What was found
BRAKE PULSATES AND VIBRATES WHEN PRESSURE IS APPLIED. ADDITIONALLY PARKING BRAKE LIGHT BRIEFLY ILLUMINATED WHEN THE LANDING GEAR WAS SELECTED DOWN. //SIGNOFF// AS PER CONTACT CENTER'S GUIDANCE PERFORMED TROUBLESHOOTING AS FOLLOWS. PERFORMED LEAK INSPECTION OF THE LH AND RH BRAKES IAW EMB PHENOM 300 AMM 32-41-D0. NO DEFECTS NOTED, PERFORMED LH AND RH BRAKE BLEEDING OF THE EMERGENCY AND NORMAL BRAKES IAW EMB PHENOM 300 AMM 32-40-00. BRAKE FLUID HAD NO SIGNS OF AIR OR CONTAMINATION. OPERATIONAL TEST WAS SATISFACTORY. SERVICED THE MAIN HYDRAULIC SYSTEM RESEVOIR AS RENUIRED IAW EMB PHENOM 300 12-13-00. COULD NOT DUPLICATE ORIGINAL SQUAWK.