GE Giraffe OmniBed Service Manual page 96

Chapter 4: Troubleshooting
Alarm Message Meaning
Analog to digital
converter circuit
self test failed.
Oxygen System The reading
Failure 4 of Vtest is out
of the valid
range:1.216V-
1.254V.
After calibration,
both supply
valves are
opened and after
Check O2 supply
approximately 20
seconds, sensor1
reading is not
greater than 23%.
Check O2 Supply
alarm has been
Oxygen System silenced twice
Failure 5 and the sensor1
reading is still not
greater than 23%.
The Giraffe
control board
Oxygen System cannot
Failure 6 communicate
with Servo O2
board.
Power up test
Oxygen System detected a
Failure 7 problem with the
watchdog circuit.
In calibration
mode, after 5
minutes, both
sensors are
Calibration failed not reading
between 23 and
55 millivolts so
the unit cannot
calibrate.
68
Cause
Defective Servo O2 board.
O2 supply is not connected.
Kinked hoses in sensor
housing.
O2 supply is not connected.
Calibration valve stuck in
calibration position.
Supply valves not opening.
Leak or occlusion in sensor
housing area.
Defective Servo O2 board.
Defective Cable.
Defective Servo O2 board.
Calibration valve is not
opening or the calibration
fan is not turning on.
Defective sensors.
6600-0343-000 104
Action
Replace servo O2 board.
Verify O2 supply, minimum 45psi (310kPa) is
connected to the inlet.
Check hoses.
Verify O2 supply, minimum 45psi (310 kPa) and
45 L/min is connected to the inlet.
Check the calibration valve. Refer to the Tips
section (4.7.3).
Check supply valves. Refer to the Tips section
(4.7.3).
Be sure sensor housing is seated properly and
the retaining screws are tight. Be sure sensor
gaskets are in place and the tubing is seated
correctly in the connectors. Check to be sure that
the two vents in the infant compartment under
the bed are not occluded.
Replace servo O2 board.
Check that the cable between the Giraffe control
board and the Servo O2 board is seated properly.
Replace Servo O2 board.
Check the calibration valve and fan. Refer to the
Tips section (4.7.3).
Replace the sensors.
© 2001 by Datex-Ohmeda, Inc.. All rights reserved.