Service manual

Revision D DINAMAP
®
ProCare Monitor 2-13
2009381-001
Equipment Overview: Functional Description
Upon entering a FAILSAFE condition, the Main Board will perform the following
tasks:
 Parameter monitoring disabled
 Alarm tone sounding from speaker
 Pneumatic FAILSAFE (deflate the cuff, pump off)
 Normal communications interface disabled
 Remote alarm control inactive
 Hard keys except ON/OFF key inactive
The ON/OFF key can reset the Monitor and end the FAILSAFE condition. The
FAILSAFE condition will terminate automatically after 10 minutes to preserve
battery power.
All regulated DC power, isolated and non-isolated is generated on the Main
Board from Battery supply. The external DC input is used to charge the battery
via charging circuitry on the Main Board.
User Interface (UI) Board PWA
The UI Board is used as a message center. It displays patient vital signs, alarms
status, monitor set-up, limit violation, BP cycle and the time the data was
received. The primary processor on the Main Board controls the UI Board. When
the primary processor reads the parameter signals, it decodes the signals and
routes the display information to the UI Board.
The UI assembly also provides hardkey switches for the ProCare Main Board. The
primary processor asserts a HIGH on the 16 outputs of the 1-of-16 decoder/
demultiplexer one at a time and then reads at the signal on SW_MUX. A LOW on
SW_MUX indicates that the switch is asserted.
SPO
2
PWA
The ProCare Monitor can be configured for use with either a Nellcor or Masimo
SPO2 PWA. The SPO2 PWA provides continuous readings of oxygen saturation
and pulse rate. Additional circuitry on the Main Board provides power, data
communications, and isolation between SPO2 PWA and primary processor.
Patient data received from the finger sensor is filtered, amplified, and analyzed
on the SPO2 PWA. The information is sent to the Main Board via the optically
coupled electrically isolated serial connection. The primary processor receives
the data and routes it to the UI board for display. The data is also sent to the
printer if specified