15 P/N:80234885.5.4 Initial settings descriptionProcess or or• Move the chair and backrest to the working position, and adjust dentallight to the desired condition ( On or Off), press the “P” button 3s tillthe indicator lights on (beep 1 time, then loose button so as not toenter the original setting state), and enters the setup procedure.• Press the “P1” button one time, and then press the “P “buttonagain(beep1-2times), setup finished and escape the setup procedure.• P2, P3 position setup are same as the P1.P PUser's Manual of Beyond 300/301 Delivery SystemHydraulic system initial settings :1. Press “P” button about 12 second until the buzzer sound 2 short beeps (theindicator flashes twice and then illuminates),enter initial setup state; pressP1,the buzzer sound 1short beep( P light off),escape setup state.This step eliminates the former stroke parameters.2. Press “P” button about 12 seconds until the buzzer sound 2 short beeps,(the indicator flashes twice and then illuminates),enter initial setup state,move the chair by pressing the four direction buttons to make chair downand backrest up. Then press “O”button , and move the chair again to makechair up to the highest and backrest down to the lowest. A t this time, press“LP” and then finish the setting.