Mindray Datascope AS 3000, Service Manual

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AS3000™ Service Manual 0070-10-0683 i
Table of Contents
Foreword .......................................................................................................................................................vii
Warnings, Cautions and Notes ........................................................................................................................vii
Warnings ......................................................................................................................................................vii
Cautions .......................................................................................................................................................viii
Notes ............................................................................................................................................................ ix
Theory of Operation .....................................................................................................1 - 1
Introduction ................................................................................................................................................ 1 - 1
Microprocessor-controlled Ventilator.............................................................................................................. 1 - 2
Components............................................................................................................................................... 1 - 3
Front View .......................................................................................................................................... 1 - 3
Side View........................................................................................................................................... 1 - 5
Rear View........................................................................................................................................... 1 - 7
Other components (not identified in graphics) ......................................................................................... 1 - 8
Breathing System ................................................................................................................................. 1 - 9
The Ventilator Unit ............................................................................................................................... 1 - 9
Adjustable Alarms ............................................................................................................................. 1 - 10
Compliance Compensation................................................................................................................. 1 - 10
Electrical Supply ....................................................................................................................................... 1 - 11
Electrical components......................................................................................................................... 1 - 11
Ventilator Control and Drive....................................................................................................................... 1 - 12
BDU (Basic Digital Unit)...................................................................................................................... 1 - 12
Amplifier Board ........................................................................................................................ 1 - 14
Drive Gas Pressure Sensor Board ................................................................................................ 1 - 19
PAW Pressure Sensor Board ....................................................................................................... 1 - 20
Breathing System Heater ............................................................................................................ 1 - 21
Sensor Board............................................................................................................................ 1 - 23
Power Management........................................................................................................................... 1 - 26
Battery ............................................................................................................................................. 1 - 28
Power Supply.................................................................................................................................... 1 - 28
Anesthesia System Components .................................................................................................................. 1 - 29
Auxiliary Outlets................................................................................................................................ 1 - 29
Absorber Heater Wire Board .............................................................................................................. 1 - 29
Work Light Board .............................................................................................................................. 1 - 29
Ventilator UI ............................................................................................................................................. 1 - 31
Keyboard Board................................................................................................................................ 1 - 31
Display............................................................................................................................................. 1 - 34
Communication Interface / RS232 Isolate Board ................................................................................... 1 - 35
Fuses ............................................................................................................................................... 1 - 35
Ventilator Pneumatic - O
2
Drive Gas ........................................................................................................... 1 - 36
Ventilator pneumatic drive .................................................................................................................. 1 - 36
Drive Pressure-High pressure regulator ................................................................................................. 1 - 36
Gas Box Assembly............................................................................................................................. 1 - 36
Tube color coding.............................................................................................................................. 1 - 36
The Breathing System ................................................................................................................................ 1 - 37
CMV mode, inspiration ...................................................................................................................... 1 - 37
CMV mode, expiration....................................................................................................................... 1 - 37
Manual mode, inspiration................................................................................................................... 1 - 38
Manual mode, expiration ................................................................................................................... 1 - 38
Pneumatic PEEP ................................................................................................................................. 1 - 39
Ventilator in Standby.......................................................................................................................... 1 - 39
Breathing System Components ............................................................................................................ 1 - 39
Ventilation Bellows System.......................................................................................................... 1 - 39