GE Giraffe OmniBed Carestation CS1 Service Manual page 7

Chapter 5: Troubleshooting ............................................................................. 5-1
5.1 Troubleshooting Symptoms...........................................................................................................5-1
5.2 Additional Troubleshooting Tips...................................................................................................5-9
5.2.1 Raising and Lowering the Canopy or Elevating Base .............................................5-9
5.2.2 Incubator Heaters and Bed Safety Thermostat ........................................................5-9
5.2.3 Radiant Heater.......................................................................................................................5-10
5.2.4 Power Supplies.......................................................................................................................5-10
5.2.5 Troubleshooting Harness Cables 6600-0701-700 and 2075837-001.........5-11
5.3 Switches/Thermostat .....................................................................................................................5-12
5.3.1 Humidifier Heater/Safety Thermostat ........................................................................5-13
5.3.2 Compartment Air Probe and Skin Temperature Probes.....................................5-13
5.3.3 Heat Sink Sensor Thermistor ...........................................................................................5-13
5.3.4 Elevating Base Motor and Canopy Motor..................................................................5-14
5.3.5 Troubleshooting the 50 Pin Ribbon Cable .................................................................5-14
5.3.6 Troubleshooting the Toroidal Transformer...............................................................5-15
5.4 Servo Controlled Oxygen..............................................................................................................5-15
5.4.1 Status..........................................................................................................................................5-15
5.4.2 Components Control ...........................................................................................................5-17
5.4.3 Servo Controlled Oxygen Alarm Messages...............................................................5-17
5.4.4 Servo Controlled Oxygen Troubleshooting Tips .....................................................5-21
5.4.4.1 Check Supply Valves and End Cap Safety Valve.........................................5-21
5.4.4.2 Check Calibration Valve/Calibration Fan........................................................5-21
5.4.4.3 Check Cooling Fan ....................................................................................................5-21
5.4.4.4 Sensor Housing Temperature Sensor Temperature to
Resistance Curve ....................................................................................................................5-22
5.5 Status.....................................................................................................................................................5-22
5.6 Switches ...............................................................................................................................................5-23
5.7 Error........................................................................................................................................................5-24
5.8 Alarm Test............................................................................................................................................5-25
5.9 Diagnostic Readings.......................................................................................................................5-25
5.9.1 Status..........................................................................................................................................5-25
5.9.2 DAC Voltage Test...................................................................................................................5-27
Chapter 6: Alarms and System Failure Codes .............................................. 6-1
6.1 Alarms ......................................................................................................................................................6-1
6.1.1 Compartment Sensor Failure Alarm ...............................................................................6-1
6.1.2 Patient Probe 1 Failure or Patient Probe 2 Failure Alarm .....................................6-1
6.1.3 Patient Hot - Check Probe 1................................................................................................6-2
6.1.4 Patient Cold - Check Probe 1..............................................................................................6-2
6.1.5 Canopy Pedal Disabled .........................................................................................................6-2
6.1.6 Bed Height Pedals Disabled................................................................................................6-3
6.1.7 Bed Raise Pedal Pressed ......................................................................................................6-3
6.1.8 Bed Lower Pedal Pressed.....................................................................................................6-3
Service Manual TOC-3