GE Cardiocap 5 Service Manual

							
Overview 
1.3 Monitor structure 
The Cardiocap/5 can be equipped with several factory-configured options. The block diagram and 
descriptions that follow represent the maximum functionality of the monitor with all options installed. 
 
Figure 1-1. Cardiocap/5 monitor structure 
The main software and measurement technologies are based on AS/3 hardware and software. Some 
parameter-measuring unit boards are interchangeable with AS/3 module boards, however, the units 
cannot be replaced with the corresponding modules as the hardware of the assemblies is different. 
1.3.1 Measurement parameter units 
The maximum Cardiocap/5 parameter measurement configuration consists of the NESTPR, PVX, and 
CAiO units plus ONE of the following units:  NMT or NSAT or OSAT.  
The NESTPR, CAiO, and NMT units are connected to the CPU through the Mother board and 
communicate with the CPU over a standard AS/3 module bus. The NSAT or OSAT pulse oximetry unit is 
also connected to the CPU through the Mother board and communicates with the CPU over a standard 
AS/3 module bus, which is located on the SpO2 interface board.  
Each parameter measurement board contains a CPU that processes measurement data for the 
parameter(s) associated with that board before sending the data to the main CPU. 
NESTPR unit 
The NESTPR unit contains three boards for measuring hemodynamic parameters: 
• The ECG board measures ECG (3-lead and 5-lead) and impedance respiration. 
• The STP board measures oxygen saturation, temperature, and invasive blood pressure. 
• The NIBP board measures noninvasive blood pressure.  
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PVX unit for Patient Spirometry (N-XV option) 
The PVX unit connects to the CAiO unit and measures the patient’s airway flow and pressure (Patient 
Spirometry).  
CAiO unit (N-XC, N-XCO, and N-XCAiO options) 
The CAiO unit measures airway gases. It is capable of measuring CO2, N2O, O2, anesthetic agents (AA) 
and also identifying the present anesthetic agent. 
Datex-Ohmeda enhanced pulse oximetry (N-XOSAT option) 
The OSAT unit measures oxygen saturation and pulse rate using Datex-Ohmeda enhanced pulse 
oximetry technology. 
Nellcor® compatible pulse oximetry (N-XNSAT option) 
The NSAT unit measures oxygen saturation and pulse rate using signal processing electronics and 
software that are based on Nellcor stand-alone oximeters.  
NeuroMuscular Transmission (N-XNMT option) 
The NMT unit measures the relaxation status (TOF, DBS, and ST) of patients. When used with a regional 
block cable, the unit acts as a nerve locator.  
1.3.2 Communication 
The CPU communicates with the hemodynamic parameters measuring unit (NESTPR) and airway gas 
measuring unit (CAiO) over a standard AS/3 module bus. It is based on the widely used industry 
standard RS485, which uses a differential serial method to transfer data and is quite robust.  
RS485 serial communication supports multidrop or party line connections. This means all units 
connected to the module bus use the same two physical wires for communication purposes. The 
module bus uses a 500 kbps data transfer rate. 
Communication with the I/O board and the DC/DC board takes place over an internal synchronous 
serial bus. The same bus also controls display brightness and audio signals by means of D/A 
converters located on the CPU board.  
Communication with the Net takes place over a separate synchronous serial channel. Communication 
with the Net is possible, if the CPU board is equipped with an Ethernet controller. 
Communication with the Recorder takes place over an asynchronous serial channel. 
1.3.3 CPU board 
The control functions of the monitor are centralized on the CPU board. The CPU: 
• Controls the power on/off sequencing. 
• Controls the brightness of the LCD screen by means of the Backlight board. 
• Controls the Inverter board that provides the high voltage for the display backlights. 
• Reads input from the keyboard and ComWheel. 
• Controls the serial channels and I/O functions of the monitor. 
Two PCMCIA-compatible data card slots on the board are for loading software and transferring data. 
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Distributed processing 
The parameter and airway measuring units contain their own microprocessor systems for performing 
low level functions, such as waveform filtering and pneumatics control. At the same time, the main 
CPU performs higher level tasks (trending and alarm control, for example). 
1.3.4 Display 
The main CPU directly controls the monitor display, a 10.4 inch color LCD. Supply voltages for the 
display are connected via the CPU board and the Backlight board. The Inverter board provides high 
voltage for the display backlights. The CPU controls the display brightness by adjusting the backlight 
voltage. 
1.3.5 I/O board 
The I/O board contains D/A converters for analog outputs and the audio output amplifier. It also 
contains connectors for the network identification plug, serial I/O, analog output, and external 
keyboard. 
Analog outputs are created by transferring digital data from the CPU to the D/A converters on the I/O 
board through the internal synchronous serial bus. The network identification plug is connected to the 
CPU over a separate synchronous serial channel. 
1.3.6 DC/DC board 
The DC/DC board converts 15 VDC coming from the AC/DC unit to different supply voltages for the 
monitor. All outputs are short-circuit and over-voltage protected. The CPU controls the output voltages. 
If the mains voltage drops, the 12 VDC back-up battery automatically supplies power to the monitor. 
The battery will run the monitor for at least 15 minutes. The battery is always charged when mains 
voltage is connected. The temperature sensor that measures the monitor’s internal temperature is 
located on the board. The DC/DC board communicates with the CPU over the internal synchronous 
serial bus.  
1.3.7 AC/DC unit 
The AC/DC unit converts the mains voltage to 15 VDC that is fed to the DC/DC board. The input 
voltage range of the unit is 100 to 240 VAC. The DC/DC board shuts down the AC/DC unit when there 
is over voltage detected on the 15 VDC output. The shutdown mode is reset by detaching the mains 
power cord for 30 seconds. 
1.3.8 Recorder (N-XREC option) 
The Recorder prints trend data and record parameter waveforms. It connects to the CPU through an 
asynchronous serial channel. Recorder supply voltages connect through a Recorder board that is 
permanently attached to the recorder mounting box. The board contains a voltage filter and a delay 
circuit for 12 V. 
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1.4 Symbol definitions 
Symbols on equipment 
 
Attention! Read accompanying instructions, including all warnings and cautions, 
before using this device.  
This symbol has the following meanings when it appears on the screen: 
• On the front panel indicates that protection against cardiac defibrillator discharge is 
due in part to the accessories for pulse oximetry (SpO2), temperature (T) and 
invasive pressure (P) measurement. 
• When displayed beside the O2 value, indicates that the FiO2 low-alarm limit is set 
below 21%. 
• When displayed next to the HR value, indicates that there is a risk that the monitor 
counts pacemaker spikes (pacer is set ON R) or the monitor counts T-waves (a wide 
QRS is selected). 
 
Type BF applied part (IEC 60601-1). Defibrillator-proof protection against electric shock. 
 
Type CF applied part (IEC 60601-1). Defibrillator-proof protection against electric shock. 
 
Main Menu. Located beside the ComWheel to indicate you can open the Main Menu by 
pressing the ComWheel when no other menu is displayed. 
 
Power On/Standby. 
Pb 
This battery contains lead. Separate from other waste for disposal according to local 
regulations. 
Pb 
This battery contains lead and can be recycled.  
 
Dangerous voltage. 
 Gas outlet (in airway gas models only). 
 Ethernet connectors. 
 
Equipotentiality. Monitor can be connected to potential equalization conductor. 
 Alternating current. 
 Fuse. 
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Overview 
 
ESD warning symbol for electrostatic sensitive devices. Pins of connectors identified 
with the ESD warning symbol should not be touched. Connections should not be 
made to these connectors unless ESD precautionary procedures are used. See 
Safety precautions: ESD precautionary procedures in the “User’s Reference 
Manual” for details. 
 
Symbol for non-ionizing electromagnetic radiation. Interference may occur in the 
vicinity of equipment marked with the symbol. 
 
This symbol indicates that the waste of electrical and electronic equipment must not 
be disposed as unsorted municipal waste and must be collected separately. Please 
contact an authorized representative of the manufacturer for information concerning 
the decommissioning of your equipment. 
Symbols on screens 
 
When displayed on the upper left corner of the screen, indicates alarms are silenced. 
When in the menu or digit fields, indicates that the alarm source has been turned off. 
 Sub menu. Selecting an alternative with this symbol in a menu opens a new menu. 
 The monitor is connected to the Monitor Network. 
 
Data card (green) and/or Menu card (white) is inserted. 
 Indicates the beats detected. 
 Respiration rate is measured using impedance respiration measurement. 
 Back-up battery operation and remaining capacity. 
 Back-up battery charging. 
Symbols on transport packaging 
 The contents of the package are fragile and have to be handled with care. 
 Indicates the correct upright position of the transport package. 
 
The package must be kept in a dry environment. 
 
The package should be kept within the indicated temperature limitations. 
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1.5 Safety precautions 
1.5.1 Warnings 
Refer to the User’s Reference Manual for additional warnings to be observed while monitoring a patient. 
A WARNING indicates a situation in which the user or the patient may be in danger of injury or 
death. 
Installation 
The monitor or its components should not be used adjacent to or stacked with other equipment. If 
adjacent or stacked use is necessary, the monitor and its components should be observed to verify 
normal operation in the configuration in which it will be used. 
Pins of connectors identified with the ESD warning symbol should not be touched. Connections should 
not be made to these connectors unless ESD precautionary procedures are used. For details, see 
section “1.5.3 ESD precautionary procedures”. 
After transferring or reinstalling the monitor, always check that it is properly connected and all parts 
are securely attached. Pay special attention to this in case of stacked mounting. 
Do not use the monitor in high electromagnetic fields (for example, during MRI). 
A printer or computer must be supplied from an additional transformer providing at least basic 
isolation (isolating or separating transformer). 
If you accidentally drop the monitor, have it checked by authorized service personnel prior to clinical 
use.  
To avoid explosion hazard, do not use the monitor in presence of flammable anesthetics. The monitor 
measures only non-flammable anesthetics. 
Do not touch the patient, table, instruments, modules or the monitor during defibrillation. 
Power connection 
Before connecting the power cord to the mains outlet, check that the local voltage and frequency 
rating corresponds with the rating stated on the device plate on the rear panel of the monitor. 
Use only hospital-grade grounded power outlets and power cord. Do not remove the grounding pin 
from the power plug. 
Use only an intact power cord. Replace the cord if it is cracked, frayed, broken, or otherwise damaged. 
Do not apply tension to the power cord otherwise the cord may get damaged. 
Do not use an additional multiple socket outlet, extension cord or adapters of any kind. 
Before starting to use the system, ensure that the whole combination complies with the international 
standard IEC 60601-1-1 and with the requirements of the local authorities. Do not connect any 
external devices to the system other than those specified. 
To avoid the risk of electric shock, this equipment must only be connected to a supply mains with 
protective earth. 
External connection 
Do not connect any external devices to the monitor other than those specified. 
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Electrical shock hazard 
When you connect equipment to the Cardiocap/5 input and output connectors, you are configuring a 
medical system and are responsible for ensuring that the system complies with IEC/EN 60601-1-1 
and with local requirements. 
Do not touch any exposed wire or conductive surface while covers are off and the monitor is energized. 
The voltages present can cause injury or death. 
Always perform an electrical safety check and leakage current test of the monitor after service. 
Fuse replacement 
Replace a fuse only with one of the same type and rating. 
Explosion hazard 
To avoid explosion hazard do not use the monitor in the presence of flammable anesthetics. 
Patient safety 
Do not perform any testing or maintenance on the monitor while it is being used on a patient. 
Never install the monitor so that it is above the patient.  
The monitor must not be used without manufacturer approved mounting attached. 
Operation of the monitor outside the specified values may cause inaccurate results. 
To prevent erroneous readings, do not use physically damaged sensors or sensor cables. Discard a 
damaged sensor or sensor cable immediately. Never repair a damaged sensor or cable; never use a 
sensor or cable repaired by others. A damaged sensor or a sensor soaked in liquid may cause burns 
during electrosurgery. 
PATIENTS WITH PACEMAKERS OR ARRHYTHMIAS: Monitor may count the pacemaker pulses as heart 
beats during cardiac arrest, some arrhythmias, and with certain types of pacemakers particularly in 
ON R mode. Do not rely entirely upon rate meter alarms. Keep patients with pacemakers and 
arrhythmias under close surveillance. 
PACEMAKER PATIENTS: The impedance respiration measurement may cause rate changes in Minute 
Ventilation Rate Responsive Pacemakers. In this case, set the pacemaker rate responsive mode off or 
turn the monitor impedance respiration measurement off. 
Temperature probes 
To prevent injury, use Datex-Ohmeda temperature probes only. 
Cleaning and service 
Only trained personnel with proper tools and test equipment should perform the tests and repairs 
described in this manual. Unauthorized service may void the monitor warranty. 
Always unplug the monitor before cleaning or service. After cleaning or service ensure that every part 
of the monitor is dry before reconnecting it to the power supply. 
Do not touch any exposed wire or conductive surface while any cover is removed and the monitor is 
energized. The voltages present can cause injury or death. 
Pins of connectors identified with the ESD warning symbol should not be touched. Connections should 
not be made to these connectors unless ESD precautionary procedures are used. For details, see 
section “1.5.3 ESD precautionary procedures”. 
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Always perform an electrical safety check and a leakage current test on the monitor after service. 
Handle the water trap and its contents as you would any body fluid. Infectous hazard may be present. 
Accessories 
Use only accessories, mounts and defibrillator-proof cables and invasive pressure transducers 
approved by GE Healthcare. For a list of approved supplies and accessories, see the Supplies and 
Accessories catalog. Other cables, transducers and accessories may cause a safety hazard, damage 
the equipment or system, result in increased emissions or decreased immunity of the equipment or 
system or interfere with the measurement. Protection against cardiac defibrillator discharge is due in 
part to the accessories for pulse oximetry (SpO2), temperature (T) and invasive pressure (P) 
measurement. 
Single-use accessories are not designed to be reused. Reuse may cause a risk of contamination 
and/or affect the measurement accuracy. 
1.5.2 Cautions 
Refer to the User’s Reference Manual for additional cautions to be observed while monitoring a patient. 
A CAUTION indicates a condition that may lead to equipment damage or malfunction. 
General 
US Federal law restricts this device to sale by or on the order of a licensed medical practitioner. 
Do not apply pressurized air to any outlet or tubing connected to the monitor. Pressure may destroy 
sensitive elements. 
Turn off the power before making any rear panel connections. 
Use only cables and accessories approved by GE Healthcare. Other cables and accessories may 
damage the system or interfere with measurement.  
Vibrations during transport may disturb SpO2, ECG, impedance respiration, and NIBP measurements. 
Installation 
Leave space for air circulation to prevent the monitor from overheating. 
Before use 
Allow two minutes for warm-up and note any error messages or deviations from normal operation. 
Airway gas measurement 
Strong scavenging suction may change the operating pressure of the monitor and cause inaccurate 
readings or internal damage. 
Autoclaving and sterilizing 
Do not steam autoclave or gas sterilize the monitor. 
Cleaning and service 
Do not use hypochlorite, ammonia-based, phenol-based, or acetone-based cleaners. These cleaners 
may damage the surface of the monitor. 
Do not immerse any part of the monitor in liquid or allow liquid to enter the interior. 
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Overview 
Do not apply pressurized air to any outlet or tubing connected to the monitor. 
Clean the fan dust filter on the rear panel once a month or whenever necessary. 
Electrostatic discharge through the PC boards may damage the components. Before handling printed 
circuit boards, wear a static control wrist strap. Handle all boards by their nonconductive edges and 
use antistatic containers when transporting them. 
Do not break or bypass the patient isolation barrier when testing PC boards. 
If liquid has accidentally entered the system or its parts, disconnect the power cord from the power 
supply and have the equipment serviced by authorized service personnel. 
Batteries 
 
• A lithium battery on the CPU Board. Dispose of the faulty IC containing the battery 
according to local regulations. 
The battery package of the power supply unit in this device contains lead, which is hazardous to the 
environment. Dispose of the battery according to local regulations. 
To replace the batteries safely, please refer to the instructions in this manual. 
• Do not short-circuit the battery terminals. Short-circuiting the battery may produce a very high 
current, which damages the battery and may cause injury to personnel. 
• Do not dispose of the battery into open flame, nor put the battery near fire, as it may explode. 
• Do not disassemble the battery. It contains electrolyte, which may damage clothing or cause 
injury to skin or eyes. If exposed to electrolyte, wash the injured area with plenty of water and 
contact a doctor. 
See Symbols on equipment earlier in this chapter. 
Special components and modifications 
Special components used in this monitor are vital to assure reliability and safety. GE Healthcare 
assumes no responsibility for damage if replacement components not approved by GE Healthcare are 
used. 
The manufacturer accepts no responsibility for modifications made to the monitor outside the factory. 
Storage and transport 
Do not store or transport the monitor outside the specified temperature, pressure and humidity 
ranges: 
Temperature -10 to +50 °C (14 to 122°F) 
Ambient pressure 660 to 1060 hPa (500 to 800 mmHg) 
 660 to 1060 mbar 
Relative humidity 0 to 85 % non-condensing 
1.5.3 ESD precautionary procedures 
• To avoid electrostatic charges building up, it is recommended to store, maintain and use the 
equipment at a relative humidity of 30% or greater. Floors should be covered by ESD 
dissipative carpets or similar. Non-synthetic clothing should be used when working with the 
component. 
• To prevent applying a possible electrostatic discharge to the ESD sensitive parts of the 
equipment, one should touch the metallic frame of the component or a large metal object 
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located close to the equipment. When working with the equipment and specifically when the 
ESD sensitive parts of the equipment may be touched, a grounded wrist strap intended for 
use with ESD sensitive equipment should be worn. Refer to the documentation provided with 
the wrist straps for details of proper use. 
ESD precautionary procedure training 
• It is recommended that all potential users receive an explanation of the ESD warning symbol 
and training in ESD precautionary procedures. 
• The minimum contents of an ESD precautionary procedure training should include an 
introduction to the physics of electrostatic charge, the voltage levels that can occur in normal 
practice and the damage that can be done to electronic components if they are touched by 
an operator who is electrostatically charged. Further, an explanation should be given of 
methods to prevent build-up of electrostatic charge and how and why to discharge one’s 
body to earth or to the frame of the equipment or bond oneself by means of a wrist strap to 
the equipment or the earth prior to making a connection. 
1.5.4 Disposal 
Dispose of the whole device, parts of it, its packing material and this manual in accordance with local 
environmental and waste disposal regulations. 
1.5.5 Points to note 
Medical electrical equipment needs special precautions regarding electromagnetic compatibility and 
needs to be installed and put into service by qualified personnel according to the electromagnetic 
compatibility information provided in Chapter 2. 
Portable and mobile RF communications equipment can affect the medical electrical equipment.  
Service and reparations are allowed for authorized service personnel only. 
1.6 Specifications 
All product specifications are subject to change without prior notice. 
1.6.1 F-MX and F-MXG frames 
Power supply 
Rated voltages and frequencies:  100 to 240 VAC 60/50 Hz 
Allowed voltage fluctuations:  ± 10%   
Maximum power consumption:  80 VA 
Fuses (2):  T2AH/250V 
Environmental conditions 
Operating temperature:  +10 to +40 °C  (50 to 104 °F) 
Storage and transport temp:  –10 to +50 °C  (14 to 122 °F) 
Relative humidity:  10 to 85 % noncondensing, in airway 0 to 100 % condensing 
Atmospheric pressure:  660 to 1060 hPa (500 to 800 mmHg) 
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