Covidien Puritan Bennett 700 Series, Service Manual

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Service and utility functions
Puritan Bennett™ 700 Series Ventilator System Service Manual 10070389 Rev. A 4-9
4.2.3.1 Enable serial port
This function lets you enable the serial port to transfer data between the ventilator and a
computer. The serial port will remain enabled until the ventilator is powered off. If the
ventilator has a communications port, you can either enable the serial port or configure it.
Table 4-9: Performing calibrations/Updating NVRAM Constants
When this occurs Do the following
Oxygen sensor replaced Perform FIO
2
sensor calib function.
Oxygen regulator pressure transducer
replaced Perform O
2
pressure calib function.
PEEP pump replaced Perform PEEP pump calib function.
Oxygen solenoid assembly replaced Perform Update constants function.
Flow sensor replaced Perform Update constants function.
Piston/cylinder assembly replaced Perform Update constants function.
Pressure solenoid PCB replaced Perform Update prsol nvram , FIO
2
sensor calib, and
O
2
pressure calib functions.
Caution
To ensure correct function of the pressure
solenoid PCB, be sure to perform the
Update
prsol nvram function before the FIO
2
sensor calib
and O
2
pressure calib functions.
P
e
P
cyl
compare test in EST fails Perform P
e
P
cyl
gain calib function.
Message window display Description
Serial ports Press ACCEPT to proceed.
Configure port A
or
Configure port B Press ACCEPT to proceed. Turn knob to change values of B (baud),
D (databits), or P (parity) and press ACCEPT to proceed. These settings
do not affect the serial port on the controller PCB, whose
configuration is set at 19200 Baud, 8 data bits, and no parity.
Enable up/download Press ACCEPT to enable. Once up/downloading is enabled, you can use
one serial port to transfer service data:
•
serial port A only, if the Communications option is installed.
• only the serial port on the controller PCB, if the Communications
option is
not installed.
When up/downloading is enabled, normal operation of the
Communications panel ports is disabled. The up/downloading function
is disabled once ventilator settings are accepted or you turn the
ventilator power switch off and back on again.