Service manual

4. BOARD/UNIT DESCRIPTION
4.14 Service Manual BSM-4100
The MP1 and MP3 boards have universal input sockets. The MP1 board has two
input sockets but the MP3 board has one or no socket depending on the instrument
model number.
The MP1 board and the one input socket MP3 board have an input protection
circuit, invasive blood pressure amplifier, thermistor probe method respiration
input preamplifier, each transducer/sensor internal wire cut detection circuit,
exciter circuit and its power supply circuit, excessive current protection circuit,
communication circuit for the EEPROM in the connection cord connector and
asynchronous communication circuit for CO
2
sensor.
MP1, MP2 and MP3 Boards
Exc.
MP2
MP1
MP3
1
2
Exc.
3
CPU
A to D Conv.
to DPU board via motherboard
BP out (PWM) via DPU board