Welch Allyn Propaq Encore, Service Manual

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Troubleshooting
Introduction
This section provides information that can be helpful in troubleshooting the Propaq Encore
monitor.
Screen Messages
Messages may appear on the display to inform the operator of some condition requiring
operator or service attention. Messages that indicate that the Propaq Encore may need
servicing are listed below. For information about other messages, refer to the
Propaq
Encore Reference Guide .
PROGRAM FAULT: SETTINGS LOST, TIME/DAY RESET. If this message appears when
the Propaq Encore is first turned on, it generally indicates a drained battery. The monitor
can be used, but the time and date and all other settings will return to factory defaults
each time the monitor is turned off. Replace the battery as soon as possible and
reprogram the time, date, and other settings according to the
Propaq Encore Reference
Guide .
CUFF FAULT: NIBP DISABLED, SERVICE REQUIRED. A single fault was encountered in
the NIBP system. Perform a functional check and calibration or repair as needed.
CALIBRATION ERROR, TEMP DISABLED. This message appears when the Propaq
Encore has detected that temperature circuitry is out of calibration. The temperature
channel is disabled until the Propaq Encore is repaired. There are no temperature channel
adjustments; the temperature channel uses a regulated power supply as a reference.
Check all power supply values (
“Calibration” on page 33). The Analog board may need to
be replaced.
SENSOR FAILURE - EEPROM - (MCO
2
). A failure in the sensor EEPROM is detected
(typically a checksum error). The CO
2
channel is disabled until the sensor cable is
disconnected. Replace the sensor.
SENSOR FAILURE, HEATER - (MCO
2
). A failure in the sensor temperature control
hardware is detected. This is typically a sensor error, but may be an MSP board fault.
Replace the sensor or MSP board as required.
SENSOR FAILURE, MOTOR DRIVE - (MCO
2
). The mainstream sensor motor drive
hardware has failed. The channel is disabled until the sensor is disconnected. Replace the
sensor.
DEGRADED WAVEFORM, CHECK ADAPTER - (MCO
2
). The airway adapter (cuvette)
may be contaminated or the light source in the sensor may be faulty. Clean or replace the
cuvette as required or replace the CO
2
sensor.