Mindray Z6, Service Manual

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Hardware Principle 4-7
4.2.5 Ultrasound System Monitor
CPU
module
Multifunction
FPGA
System
monitor
curcuit
LPC
SMBUS
Temperature
sensor
Main unit front-
end FPGA
temperature
D12V
D-12V
D-5V
D2.5V
D1.8V
D1.5V
D1.2V
Voltage of
clock
battery
Back-end of main board
CPU module
temperature
Main unit fan
Power supply
module fan
Power supply
module
Figure 4-7 Principle Diagram of Ultrasound System Monitor
Ultrasound system monitor is mainly to monitor every voltage of interior machine and temperature.
Function:

On the back-end of the main board, a special monitor IC is used to monitor signal voltages
and clock battery power that are provided to the main board by the main unit box power
supply module.

The system temperature is detected in three positions: BF FPGA, CPU module and power
supply module.

Monitoring chips control the main unit fan and power supply module fan, and then read the
fan rotating,
which send to Multifunction FPGA by smbus, and to PC module by LPC bus.