Mindray Passport 12 - 2.3 Main Unit Architecture

Passport 8/12 Service Manual 2-5
2.3 Main Unit
The main unit of the monitor consists of two parts:
 Front housing assembly: main board, keypad board assembly (knob), display, touchscreen, alarm lamp board,
power switch, and indicator board.
 Rear housing assembly: power board (AC/DC), power management board, battery pad, interface board, recorder,
speaker, and multi-parameter module which includes two types of SpO
2
stacking board.
The following figure shows the main unit architecture of the monitor.
Wi-Fi
Antenna
MainBoard
PowerBoard
Battery
InterfaceBoard
Keypad
Board
Touchscreen
Control
Board
Touchscre
en
Display
Multi-parameterBoard
PowerManagementBoard
Recorder
SpO
2
Board
Speaker
AlarmLamp
Board
Parameter
Connector
Panel
InterfaceBoard