GE Cardiocap 5 Service Manual
Have a look at the manual GE Cardiocap 5 Service Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 45 GE manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
Troubleshooting 4.2.4 Impedance respiration SITUATION POSSIBLE CAUSE ACTION No resp trace Waveform not selected on the screen. Adjust (Monitor Setup – Screen Setup – Waveform Fields). Unacceptable resp waveform Poor electrode or poor electrode skin contact. Electrodes from different manufacturers are used. Too much/little gel is used. Poor electrode condition. Electrodes are dried out. Improper site of electrodes. Check that electrodes are not placed over bones, active muscles, or layers of fat. Improper skin preparation. Remove body hair. Clean attachment site carefully with alcohol. 4.2.5 Pulse oximetry (SpO2), standard SITUATION POSSIBLE CAUSE ACTION Finger probe falls off SpO2 sensor is slippery. Check/follow the instructions for the sensor. Wipe with 70 % isopropyl alcohol and allow to dry. Finger is too thin or thick. Try another finger or a different sensor. Weak signal artifacts Poor perfusion, movement artifacts, and/or shivering. Try another site. No SpO2No waveform selected on screen. Check selected SpO2 waveforms (Monitor Setup – Screen Setup – Waveform Fields). Wrong configuration setting. Check the configuration settings in the ESTPR : STP/Calibrations menu (enter Service View menu and select Modules) 4.2.6 NIBP SITUATION POSSIBLE CAUSE ACTION No NIBP value displayed NIBP not selected on screen. Check monitor setup. 4.2.7 Temperature SITUATION POSSIBLE CAUSE ACTION No temperature Wrong type of probe. Use correct probe. displayed Temperature out of measurable range. The range is between 10 and 45 °C. Temperature calibration not protected. Set the protection ON in the service menu. 4-9
Cardiocap/5 Technical Reference Manual 4.3 Troubleshooting charts for options 4.3.1 Recorder (N-XREC) SITUATION POSSIBLE CAUSE ACTION Recorder not responding to front panel key but operates through Recorder menu. Membrane switch cable loose or broken. Check the cable. Replace the front panel if necessary. Flex-strip cable broken. Check the cable. Replace if necessary. Bad contact on connector board. Check contact. Recorder will not start. No error messages shown. Flex-strip cable broken. Check the cable. Replace if necessary. Connector board loose. Check connector board connections. Recorder board faulty. Replace the board. Recorder faulty. Replace the recorder. Recorder works but nothing appears on the paper. Active side of paper is down. Turn the paper roll. NOTE: To test which side is active, place the paper on a hard surface and draw a line with a fingernail. A dark line appears on the active (thermal) side. Faulty recorder. Replace the recorder. 4.3.2 Invasive blood pressure (N-XP) SITUATION POSSIBLE CAUSE ACTION Abnormally low pressure Transducer wrongly positioned. Check mid-heart level and reposition transducer. No pressure Defective transducer. Check transducer. Check that pressure transducer opens to patient. No pressure module plugged in. Check the module. No waveform selected on screen. Check pressure waveform selection (Monitor Setup – Screen Setup – Waveform Fields). Wrong configuration setting. Check the configuration setting from the STP Calibrations service menu (enter Service View menu and select Modules – ESTP : STP – Calibrations). Out of range Measured pressure is beyond internal measurement range. The waveform hits the top and the numeric display not shown. Check transducer and its level. Zero the channel. Out of range < 40 mmHg (< 5.3 kPa) Measurement pressure is beyond measurement range. Check transducer level. Zero the channel. Out of range > 320 mmHg (> 42.7 kPa) Measurement pressure is beyond measurement range. Check transducer level. Zero the channel. The patient may also have high pressure. Zero adj. > 100 mmHg (> 13.3 kPa) Offset when zeroing is > 100 mmHg (but < 150 mmHg) (> 13.3 kPa, but < 20.0 kPa) from the unit’s absolute zero (with default gain). Check transducer. The waveform may hit the top and the numeric display not shown. 4-10
Troubleshooting 4.3.3 Pulse oximetry (N-XOSAT or N-XNSAT) 4-11
Cardiocap/5 Technical Reference Manual 4.3.4 Airway gases (N-XC, N-XCO, or N-XCAiO) SITUATION POSSIBLE CAUSE ACTION Air leak detected. Air leak over 40 seconds. Check water trap and sample gas outflow. Press Normal Screen to continue. Continuous occlusion. Occlusion over 40 seconds. Check sampling line and D-fend. Gas calibration is not available during first 5 minutes/during occlusion/during air leak Entering calibration is not allowed during 5 minutes after power up and during occlusion or air leak. Check for occlusions or air leaks. Allow monitor to run for 30 minutes, then try again. NOTE: Calibration values must not be altered unless 30 minutes have passed after power-on. No response to breathing Sampling line or water trap loose, blocked, or improperly attached. Water trap container full. Check/correct sampling line and water trap blockage and attachment. Empty water trap. No response to any gas Sampling line, water trap, or internal tubing blocked or loose, or improperly attached. Check/correct sampling line, water trap, and internal tubing blockage and attachment. Pump failure. Occlusion or zero valve malfunction. Supply voltage missing. Serial communication error. Enter the appropriate service menu(s) and check/verify the correct operation of the pump, valves, etc. Sudden increase in gas display Water trap malfunction. Check all internal tubing and the interior of the water trap for occlusions or leaks. Replace water trap. Check flow rates. Significant drift in all gases Leak in sampling line or internal tubing (especially in conjunction with readings that are too low). Check/correct leak in sampling line or internal tubing. Abnormally high (or low) response to all gases or sudden occlusion warning Pressure transducer failure. Repair unit. ETCO2 value too low Leak in sampling system. Calibration error. High ventilator by-pass flow. Possible clinical causes: sudden circulation decrease, pulmonary embolism, very large dead-space, hyperventilation, or large shunting. Check all connections. Check calibration. ETCO2 too high D-fend contaminated. Calibration error. Possible clinical causes: hypoventilation or increased metabolism. Change D-fend. Check calibration. Waveform clipped Incorrect scaling. Change scale No response to breathing Sampling line or water trap loose or blocked. Sample gas outlet blocked. Air leak. Possible clinical cause: apnea. Check all connections. Check that outlet is open. ETCO2 over scale (>15%) (not measurable) Contaminated CO2 sensor. Faulty D-fend. Possible clinical cause: abnormally high ETCO2 (permissive hypercapnia). Change D-fend. ETCO2>PaCO2“Dry gas” is default. Possible clinical cause: unit is mmHg or kPa and ETCO2 is close to arterial PCO2. Change to “wet gas” by using install/service menu. 4-12
Troubleshooting 4.3.5 Patient Spirometry (N-XV) SITUATION POSSIBLE CAUSE ACTION insp TV>exp TV Spirometry tube leak. Water inside D-lite or tubing. Another side-stream gas sampling between D-lite and patient. D-fend leaks. Possible clinical cause: leak in lungs; ET tube cuff leak. Check leaks; perform leak test. Change tubing and D-lite. Don’t use active humidification. Check D-fend. Always connect gas sampling to D-lite only. exp TV> insp TV Spirometry tube leak. Water inside D-lite or tubing. Check leaks; perform leak test. Change tubing and D-lite. Don’t use active humidification. PEEP>Ppeak Spirometry tubes cross connected. Change spirometry tubes. Monitored volumes less than set volumes Leak between ventilator and D-lite. Check ventilator connections. Loop over scale Wrong scale selected. Change scaling. Strongly vibrating loop Water or secretions in hoses or D-lite. Possible clinical cause: mucus in ET tube. Suction the patient. Change dry D-lite and/or empty the water from hoses. Volumes too large or too small Wrong mode vs. sensor selection. Check mode and sensor (D-lite for adult; Pedi-lite for pediatric). Fluctuating Raw Mucus in airway or tubing. Ventilator exp. valve causes fluctuations during exp. Flow. Possible clinical cause: patient breathing effort against the ventilator; patient- triggered breaths. Check/clear airway and tubing. Raw too high Mucus or kink in tubing. Possible clinical cause: asthmatic patient or bronchospasm. Check/clear tubing. Raw value invalid: Possible clinical cause: spontaneous breaths; breathing against ventilator; patient-triggered breaths. Ppeak too high Possible clinical cause: bronchospasm or patient is coughing; breathing against ventilator; obstructed airways or HME. Compl value invalid: -- Possible clinical cause: spontaneous breaths. Static PEEPi not measured CO2 measurement not connected. Static PEEPi measurement not selected. Exp. pause lasted less than 4 seconds. Connect CO2 meas. to D-lite. Go to spirometry setup. 4-13
Cardiocap/5 Technical Reference Manual 4.3.6 NeuroMuscular Transmission (N-XNMT) 4-14
Contents Chapter 5. Frames and Software 5.1 Introduction........................................................................\ .5-1 5.1.1 Cardiocap/5 measurement options.............................................................5-1 5.2 AC/DC power supply functional description...........................5-2 5.2.1 Introduction........................................................................\ .......................5-2 5.2.2 Main structure........................................................................\ ....................5-3 5.2.3 PFC converter........................................................................\ .....................5-3 5.2.4 DC/DC converter........................................................................\ ................5-4 5.2.5 Start-up sequence........................................................................\ ..............5-4 5.2.6 Output voltage control........................................................................\ .........5-4 5.2.7 Over-voltage protection........................................................................\ .......5-5 5.2.8 Current limit........................................................................\ .......................5-5 5.3 DC/DC board functional description......................................5-6 5.3.1 Introduction........................................................................\ .......................5-6 5.3.2 DC/DC board block diagram........................................................................\ 5-7 5.3.3 Structure of the power supply section...........................................................5-7 5.4 Detailed description of the power supplies.............................5-9 5.4.1 +3.3V power supply........................................................................\ ............5-9 5.4.2 +5V power supply........................................................................\ ...............5-9 5.4.3 +12V power supply........................................................................\ .............5-9 5.4.4 +/-15V power supply........................................................................\ ..........5-9 5.4.5 +15VD power supply........................................................................\ .........5-10 +15VB boost converter........................................................................\ ......5-10 VDD control........................................................................\ ......................5-10 +15VD circuit breaker........................................................................\ .......5-10 CPU power connector (X6)........................................................................\ .5-11 Mother board power connector (X2)............................................................5-11 AC/DC power supply connector (X8)...........................................................5-12 5.4.6 Fan control........................................................................\ .......................5-12 Fan connector (X3)........................................................................\ ............5-12 5.4.7 Battery charger operating principle.............................................................5-12 Battery connector (X4)........................................................................\ .......5-13 5.4.8 Control electronics........................................................................\ ............5-13 CPU connector (X7)........................................................................\ ...........5-14 5.4.9 AD converter........................................................................\ .....................5-15 A/D channels........................................................................\ ...................5-15 5.5 CPU board........................................................................\ .5-16 5.5.1 Synchronous serial communication............................................................5-18 Ethernet ID-block........................................................................\ ..............5-18 Internal synchronous serial bus..................................................................5-18
Cardiocap/5 Technical Reference Manual 5.5.2 Asynchronous serial channels .................................................................... 5-18 Serial channels implemented with PLD (D19) .............................................. 5-19 Serial channels of the Quart ....................................................................... 5-19 5.5.3 Keyboards and ComWheel ........................................................................\ . 5-19 Keyboard interface ........................................................................\ ............ 5-19 Matrix keyboard ........................................................................\ ................ 5-19 ComWheel ........................................................................\ ........................ 5-19 5.5.4 Digital I/O signals ........................................................................\ ............. 5-20 Defibrillator synchron ization output ............................................................ 5-20 Alarm signals ........................................................................\ .................... 5-20 5.5.5 Display controller ........................................................................\ .............. 5-21 5.5.6 Memory........................................................................\ ............................ 5-21 DRAM........................................................................\ ............................... 5-21 FLASH ........................................................................\ .............................. 5-21 5.5.7 PC and ethernet interfaces ........................................................................\ . 5-22 PC card........................................................................\ ............................. 5-22 Ethernet ........................................................................\ ........................... 5-22 5.5.8 Audio ........................................................................\ ............................... 5-22 5.5.9 Real-time clock and batte ry back-up RAM ................................................... 5-22 5.5.10 Control circui t (D24) ........................................................................\ ..... 5-22 Supply voltage control ........................................................................\ ....... 5-22 Watchdog function ........................................................................\ ............ 5-22 5.6 Display, input, and output ................................................... 5-23 5.6.1 Display........................................................................\ ............................. 5-23 5.6.2 Keyboard bo ard ........................................................................\ ................ 5-23 5.6.3 Mother board ........................................................................\ .................... 5-23 5.6.4 I/O board ........................................................................\ ......................... 5-24 5.6.5 Net board ........................................................................\ ......................... 5-24 5.6.6 Parameter connector boards ...................................................................... 5-24 5.7 Recorder and recorder board (N-XREC option) ...................... 5-25 Table of Figures Figure 5-1. AC/DC unit ........................................................................\ ............................ 5-2 Figure 5-2. General schemati c structure of SR92A720 ....................................................... 5-3 Figure 5-3. Inductor current waveform ........................................................................\ ....... 5-3 Figure 5-4. General structure of the output interfaces ......................................................... 5-4 Figure 5-5. DC/DC board ........................................................................\ ......................... 5-6 Figure 5-6. DC/DC boar d block diagram ........................................................................\ ... 5-7 Figure 5-7. DC/DC board power supplies ........................................................................\ .. 5-8 Figure 5-8. The CPU board ........................................................................\ ..................... 5-16 Figure 5-9. Block diagra m of the CPU board .................................................................... 5-17 Figure 5-10. Cardiocap/5 di splay block diagram ............................................................. 5-23 Figure 5-11. Built-in recorder ........................................................................\ ................. 5-25
Frames and Software 5. FRAMES AND SOFTWARE 5.1 Introduction Two different frames, or models, are available for Cardiocap/5: • F-MX (hemodynamic measurement) • F-MXG (hemodynamic and gas measurement) Anesthesia software (S-XANE) or Critical Care software (S-XCCA) is available for both frames. 5.1.1 Cardiocap/5 measurement options The standard and optional measurement parameters that are available for each Cardiocap/5 frame are summarized below. Parameter F-MX F-MXG ECG (3-lead or 5-lead) • • ST analysis • • SpO2 and Pleth • • Temperature (T1) • • NIBP • • Impedance respiration • • Optional Parameters F-MX F-MXG N-XP Two invasive pressure channels and second temperature (T2) • • N-XC CO2 • N-XCO CO2, N2O, Patient Oxygen • N-XCAiO CO2, anesthetic agents, agent identification, N2O, Patient Oxygen • N-XV Patient Spirometry NOTE: This option requires N-XCO or N-XCAiO. • N-XNMT NeuroMuscular Transmission NOTE: This option requires N-XCAiO. • N-XOSAT Datex-Ohmeda enhanced pulse oximetry • • N-XNSAT Nellcor® pulse oximetry • • 5-1
Cardiocap/5 Technical Reference Manual 5.2 AC/DC power supply functional description 5.2.1 Introduction The AC/DC unit SR92A720 is a switched-mode power supply made by Efore Ltd. Figure 5-1. AC/DC unit The AC/DC switched-mode power supply unit SR92A720 is an integrated part of a patient monitoring device. The SR92A720 power supply is mains connected and can be supplied with a universal single phase line voltage in the range of 85 to 275 V. The unit has one output line with a maximum continuous output power of about 63 W. The aluminum chassis is classed as IP20. The chassis is connected to protected earth. This makes the assembly and handling of the power supply unit safer. In addition, the aluminum chassis is used in thermal management and EMC design. 5-2