GE Giraffe Service Manual page 90

Chapter 4: Troubleshooting
Alarm Message Meaning
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
Oxygen System board 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
not reading
failed
between 23 and
55 millivolts so
the unit cannot
calibrate.
Elevated O2 levels
FiO2>26% but Servo O2 is
not turned on.
SENSITIVE TO ELECTROSTATIC DISCHARGE CAUTION
An Electrostatic Discharge (ESD) Susceptibility symbol is displayed to alert service personnel that the
part(s) are sensitive to electrostatic discharge and that static control procedures must be used to
prevent damage to the equipment.
62
Cause
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.
If other sources of
oxygen are not in
use, leak in Servo O2
system.
6600-0356-000 103
Action
Verify O2 supply, minimum 45 psi (310 kPa)
and 45 L/min is connected to the inlet.
Check the calibration valve, Refer to the Tips
section 4.7.3.2.
Check supply valves. Refer to the Tips section
4.7.3.1.
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 4.7.3.2.
Replace the sensors.
Check for valve leak. Refer to the Tips section
4.7.3.
© 2001 by Datex-Ohmeda, Inc.. All rights reserved.