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Datex-Ohmeda CAPNOMAC ULTIMA, Service Manual

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CAPNOMAC ULTIMA 

TM

 SERVICE MANUAL

4-9

4.4.2

Principle of O

2

 measurement

The differential oxygen measuring unit uses the paramagnetic principle
in a pneumatic bridge configuration. The signal picked up with a
differential pressure transducer is generated in a measuring cell with a
strong magnetic field that is switched on and off at a frequency of 110

Hz or 165 Hz. The output signal is a DC voltage proportional to the
O

2

 concentration difference between the two gases to be measured.

January 15th, 1997/6

Summary of Contents for CAPNOMAC ULTIMA

Page 1: ...I M A T M SERVICE MANUAL 0537 Manual No 878131 1 January 15th 1997 Datex Engstrom Division Instrumentarium Corp P O Box 900 FIN 0003 1 Datex Engstrom Finland Tel 358 9 39411 Fax 358 9 2787913 www dat...

Page 2: ...quipment classification 4 7 4 4 Principle of operation 4 8 4 4 1 Principle of CO2 N2O AA measurement 4 8 4 4 2 Principle of O 2 measurement 4 9 4 4 3 Principle of SpO2 measurement 4 10 4 5 General blo...

Page 3: ...SpO2 service 6 6 6 3 3 Error list 6 7 6 3 4 Factory reset 6 8 Troubleshooting 6 9 6 4 1 Monitor start up sequence 6 9 6 4 2 Troubleshooting in general 6 10 6 4 3 Gas sampling system troubleshooting 6...

Page 4: ...adjustment 7 7 7 4 CPU board adjustment 7 8 7 5 Video Display Unit Philips Adjustments 7 9 8 FUNCTIONAL FIELD CHECK PROCEDURE 8 l 8 1 Preoperative check list 8 l 8 2 Checks after component replacemen...

Page 5: ...a 4 23 Gas sampling system schematic diagram 5 3 5 2 1 Gas sampling system layout 5 4 5 2 2 Gas sampling system layout 5 5 5 3 CO2 N2O AA measurement block diagram 5 9 5 4 ACX photometer 5 10 5 5 Prea...

Page 6: ...transformer diagram 5 36 Power supply board signal waveforms and schematic diagram part 1 5 37 Power supply board parts layout and schematic diagram part 2 5 38 Mother board parts layout 5 40 Keyboard...

Page 7: ...adjustments 7 7 Video display unit Philips schematic diagram 7 10 Video display unit Philips schematic diagram 7 11 Exploded picture of the monitor all except 27 model 9 8 Exploded picture of the mon...

Page 8: ...board X3 5 45 5 6 Power supply board X10 Mother board X5 5 46 5 7 SpO2 measuring board X2 Mother board X10 5 47 5 8 Keyboard Xl Mother board X8 5 47 5 9 O 2measuring unit Mother board X9 5 48 5 10 Gas...

Page 9: ...ply board X8 Loudspeaker 5 52 Power supply board X9 Pump 5 52 PVX board Xl Mother board X4 5 57 ASX preamplifier board Xl ASX board X2 5 65 ASX board X5 Mother board X14 5 65 General troubleshooting c...

Page 10: ...agent identification cannot distinguish between anaesthetic agents Manufacturer assumes no liability for an incorrect anaesthetic selection When doing any work on the SpO2 board care has to be taken t...

Page 11: ...minimize heat accumulation inside the monitor Connect sample gas outlet on the monitor s rear panel to scavenging system to prevent room air pollution Diameter of scavenging system tubing must be 2 t...

Page 12: ...to kink or damage the gas sample tubes Leakages in the gas sampling system affect accuracy of measurement and are difficult to detect When servicing the sampling system make sure not to leave any tub...

Page 13: ...is changed when technical changes are made to the monitor resulting in new spare parts that are incompatible with earlier units The last two digits of the monitor type designation denote the revision...

Page 14: ...to replace the ACX 100 Measuring board but not vice versa Unless otherwise noted the description of ACX 100 Measuring bench board is also valid to ACX 200 Measuring bench board ASX 100 identifies hal...

Page 15: ...nces to the revision 01 are ACX measuring board modified Software CPU board jumper X3 shorting pins 2 and 3 in order to use 2Mbit EPROM Revision 03 except ULT S SV 25 00 ULT l S 27 02 ULT V xx 01 and...

Page 16: ...oard and with ASX 100 ASX 200 ACX 100 and ACX 200 sensors NOTE New SpO2 Measuring board operates only with the new main software and the High Speed CPU board Revision 07 27 43 Software and front panel...

Page 17: ...d gas sampling system layouts revised ACX 100 replaced with ACX in general description O2 field frequency changed from 165Hz to 1lOHz SpO2 board P N changed jumpers x4 and x6 removed from CPU parts la...

Page 18: ...carried out Update number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Carried out by Name Datex Datex Datex Datex Datex Datex Engstrom Date May 2nd 1991 September lst 1992 March lst 1993 Novem...

Page 19: ...ge is added in order to include V model parameters Numeric trend is added Its time scale is 12 hours Selection of anaesthetic agent became easy Pressing of the SET key is no longer necessary SEIKO DPU...

Page 20: ...alarm limits for anaesthetic agents are now adjusted in MAC values which will then automatically be applied in corresponding percentages when an anaesthetic agent is selected Number of beeps in diffe...

Page 21: ...ftware versions are see the Operator s Manual for more information Sevoflurane is measured and displayed ACX 200 measuring unit Anaesthetic agent is identified and displayed ASX unit in Ultima models...

Page 22: ...els with i parameter Mixture of two agents is identified and inspiratory and expiratory values for both agents are displayed While agent mixture is present both agents ET and Fi values are shown in U0...

Page 23: ...d compatibility with ACX benches P N 874773 x Can be used with ACX 100 bench only P N 875736 x Can be used with ACX 100 bench only P N 878738 x Can be used with ACX 100 bench only P N 880270 x Can be...

Page 24: ...differences to the previous level software versions are see the Operator s Manual for more information 1 Possibility to measure pediatric airway pressure and volume with Pedi Lite sensor and new PVX s...

Page 25: ...evision 07 Changes made a bug in 3 0 fixed missing SELECT AGENT message in models without agent identification 884203 2 0 for all french spoken countries since Sevoflurane and Desflurane were accepted...

Page 26: ...ft Gain Temperature Drift Nonlinearity Display Numeric Waveform 3 min to operation 30 min for full specifications 0 to 10 0 to 76 mmHg 0 to 10 kPa 10 to 15 76 to 114 mmHg 10 to 15 kPa ms vol 24h 0 to...

Page 27: ...18 to 30 unspecified Rise Time Gain Drift Display Numeric End tidal and inspired Waveform Scale 0 to 1 2 0 to 2 5 0 to 5 0 to 10 0 to 20 Sweep speeds 7 mm s and 0 7 mm s Agent identification Identifie...

Page 28: ...speeds Flow volume loop Tidal Volume TV Accuracy Resolution Measuring range 1 ml Adult 150 to 2000 ml Pediatric 15 to 300 ml Minute Volume MV Resolution Measuring range 0 1 l Adult 2 to 15 l min Pedi...

Page 29: ...re statistically derived and correlated to simultaneous SaO2 measured on an Instrumentation Laboratory IL 282 CO oximeter Display Averaging Time Pulse Rate Measuring Range Accuracy Resolution Display...

Page 30: ...e high and low CO2 rebreathing SpO2 high and low Pulse rate high and low Peak airway pressure high and low PEEP high Expiratory minute volume high and low Non adjustable Apnea Anaesthetic agent detect...

Page 31: ...uency Power consumption Grounding Interruptibility 100 115 220 240 V 50 60 Hz 100 VA Hospital grade Data memory and alarm settings are saved during power failures up to 15 minutes Environmental requir...

Page 32: ...cording to the degree of protection against electrical shock is specified in the specifications of each parameter module ORDINARY equipment according to the degree of protection against harmful ingres...

Page 33: ...f the wavelengths is that of the CO2 absorption peak at 4 3 micrometers the second is that of the N2O absorption peak at 3 9 micrometers and the third is that of the anaesthetic agent absorption peak...

Page 34: ...matic bridge configuration The signal picked up with a differential pressure transducer is generated in a measuring cell with a strong magnetic field that is switched on and off at a frequency of 110...

Page 35: ...the light is transmitted through peripheral tissue and is finally detected by a PIN diode opposite to LEDs in the probe Pulse Oximeter derives the oxygen saturation SpO2 using empirically determined...

Page 36: ...bration method Pulse Oximetry is not able to correctly measure oxygen content of the arterial blood at elevated carboxyhemoglobin or methemoglobin levels which clinically may be harmful for patient Pl...

Page 37: ...rway volume and pressure Main CPU board including analog signal multiplexer A D converter and real time clock Video control board to convert the CPU commands into video signal Video display module Tra...

Page 38: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 4 13...

Page 39: ...4 14 January 15th 1997 6...

Page 40: ...0 to 20 Output voltage 0 to 10 v 0 to 10 v 0 to 10 v 0 to 10 v 0 to 10 v S p O 2 0 to 100 0 to 10 v Pleth wave same as on screen 0 to 10 v Airway pressure 20 to 0 cmH2O 0 to 2 v 0 to 80 cmH20 2 to 10...

Page 41: ...OMAC ULTIMA TM SERVICE MANUAL 4 16 Table 4 2 Pin order of the SERIAL ANALOG connector PIN SIGNAL PIN SIGNAL l 0 to 10 v 2 same scale as on screen 3 HAL ENF ISO SEV 0 to 10 DES 0 to 20 January 15th 199...

Page 42: ...rial out A 3 Serial in A 4 RTS A 5 CTS A 6 PB1 7 Signal ground 8 PB0 9 12 VDC 10 12 VDC 11 not in use 12 not in use 13 CTS B 14 15 16 17 18 19 20 21 22 23 24 25 max 2 mA Video Connector Output 1 Vpp 2...

Page 43: ...TM monitors ventilation in anaesthesia Both patient breathing circuit and the function of the ventilator are monitored The following parameters are displayed Expiratory and inspiratory tidal volume T...

Page 44: ...ted and averaged using TV and RR respiratory rate values Real time airway pressure and flow waveforms are displayed on the screen as shown in Figure 4 5 Figure 4 5 Example of Flow and Pressure Wavefor...

Page 45: ...Expired tidal volume Compliance End inspiratory pressure PEEP The lower the compliance value is the more stiff the lungs are Normal value for adults are 30 to 100 ml cmH2O Compliance is shown on the...

Page 46: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 4 21...

Page 47: ...ws Velocity is calculated from pressure difference according to Bernoulli s law Flow is then determined using the calculated velocity Bernoulli s law F v x A where Finally the volume information is ob...

Page 48: ...is different it is possible to identify them The bench consists of an infrared source a measuring chamber a rotating filter and a detector The peak wavelength of the narrow bandpass filter changes wh...

Page 49: ...h that of ambient air see Figures 5 2 and Tables 5 1 The tube will prevent errors caused by the effect of water vapor on gas partial pressure when humid gases are measured after calibration with dry g...

Page 50: ...l react with the anaesthetic agent causing delayed a response time and an inaccurate zero point The sampling pump is a vibrating membrane pump driven by a 50Hz 12V 0 4A square wave current The purpose...

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Page 52: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 5 4 Figure 52 1 Gas sampling system layout without i parameter Table 5 1 1 Tube lengths without i parameter...

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Page 54: ...4 873803 5019 2 874509 50 8 7 873804 50 7 4 873805 50 6 5 878044 50 5 8 873806 50 5 1 878043 50 4 4 873807 5013 8 878042 50 3 2 873808 50 3 0 878040 5012 8 878039 5012 5 878038 5012 3 873809 5012 0 8...

Page 55: ...only The ACX photometer is of dual path type The infrared light beam passes through a measuring chamber containing the gas to be analyzed and a reference chamber which is free of CO2 N2O and AA The m...

Page 56: ...rated in the photometer which detects light from a reflective surface on the filter wheel once every revolution The pulses from this sensor are used to synchronize the electronics to the signal from t...

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Page 58: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 5 10...

Page 59: ...ctor is a resistor whose resistance decreases achieved detector with a high bias voltage as a higher signal is then in infrared light For this reason it is advantageous to supply the The bias voltage...

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Page 61: ...ial pressure is generated between the sample and reference inputs due to forces acting to the oxygen molecules in a magnetic field gradient The pressure is measured with a sensitive differential trans...

Page 62: ...PROM RAM and EEPROM several analog and digital I O functions Internal and external bus The processor Dl has access to the measurement board peripherals memory A D converter D A converters etc via an i...

Page 63: ...A is closed Each signal is sampled by the peak detection circuit consisting of A24C V26 A28B R97 R201 and C15 When the peak voltage of a signal is sampled the switch A28B is open sending the signal th...

Page 64: ...D15 to produce the control pulses for the synchronous switches A28A and A28B Dark and Clear Motor speed control The speed of the stepper motor in the ACX 100 photometer is controlled with MOTOR signal...

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Page 68: ...isolated output from the multiplexer channels red channel and IR channel to the SpO2 Processor board Power supply The isolated power supply consists of 32 768 Hz oscillator Half bridge converter with...

Page 69: ...input of D5 The 8 bit digital control word is transferred over the patient isolation barrier in serial mode PA2 and is converted into parallel mode by a shift register D4 The signal level at the outp...

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Page 74: ...directly used for analog multiplexers MUX and serial channel 0 ASCII computer output The computer output is explained in Appendix A There are jumpers to select memory chips They are 2M bit program EP...

Page 75: ...key was pressed The Quart channel C is connected to Serial Analog I O connector computer output Quart channel A is connected to Aux I O connector graphic output and quart channel B is used for commun...

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Page 79: ...tic diagram Figure 5 17 Figure 5 18 Figure 5 19 The video ASIC board replaces video control board from revision 08 adaptation 27 and 43 revision 09 ASIC board includes ASIC IC and some other component...

Page 80: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 5 32 This page has intentionally been left blank Figure 5 17 no figure January 15th 1997 6...

Page 81: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 5 33 Figure 5 18 Video ASIC board parts layout Figure 5 19 on the next page Video ASIC board schematic diagram January 15th 1997 6...

Page 82: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 5 34 January 15th 1997 6...

Page 83: ...switched for motors pumps and other components 15 V for analog amplifiers Data retention voltage generation circuit supplies 5 V DRV voltage for memory from switched 5 V supply Also 12 V l A for the...

Page 84: ...CAPNOMAC ULTIMA TM SERVICE MANUAL Figure 5 20 Power supply board block diagram and transformer diagram January 15th 1997 6...

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Page 89: ...alves gas zero and pressure valves For signals in each bus see the Tables in Section 5 12 5 10 Keyboard Parts layout and schematic diagram Figure 5 24 The keypad pc board is a simple 4x4 matrix which...

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Page 94: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 5 41 Figure 5 24 Keyboard parts layout and schematic diagram board modification level 0 and higher January 15th 1997 6...

Page 95: ...PNOMAC ULTIMA TM SERVICE MANUAL 5 42 Figure 5 25 Loudspeaker unit parts layout and schematic diagram board modification level 4 and higher BK AD GN r d 2 2 26V I 7 7 10 VZ V5 EC182 September lst 1992...

Page 96: ...NC NC 11 A7 NC A6 12 A5 NC A4 13 A3 NC A2 14 Al NC A0 15 10RQ NC NC 16 RD NC NC 17 NC NC NC 18 NC NC NC 19 NC NC NC 20 NC NC INTO 21 NC NC NC 22 NC NC NC 23 NC NC NC 24 D7 NC D6 25 D5 NC D4 26 D3 NC D...

Page 97: ...DRV 30 15 VDIRTY 31 12 V 32 GND DIRTY Xl X2 X3 X4 Y2 Yl Y3 Y4 PB0 PBl NC PB3 PB4 PB5 PB6 NC PC0 NC PC2 FGAIN 1 PC3 FGAIN 2 NC NC NC PC7 RTS0 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ALR CALL AGND l0 V REF DAC6...

Page 98: ...IRTY 31 12 V 32 GND DIRTY NC NC NC NC NC NC NC NC NC NC AGND AGND LAMP PB5 SSYNC SMOTOR PC0 NC PC2 FGAIN 1 PC3 FGAIN 2 PC4 OCCLUS PC5 PUMPON PC6 ZERO PC7 RTS0 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 ALR CALL...

Page 99: ...ON 15 SEROUT 1 16 SERIN 1 17 OP0 RTSA 18 SEROUT0 19 SERIN0 20 RESET 21 Tl CTS0 22 PB6 23 PB5 24 PB4 LAMP 25 PB3 26 P B l 27 PB0 28 DAC1 FLOW 29 DAC6 IR 30 DAC0 PRES 31 AOUT O2 32 AOUT CO2 33 DAC2 SpO2...

Page 100: ...o Signal 1 15 VDIRTY 2 PA0 3 PA3 4 PA1 5 ADC 4 VOUT IR 6 15 V 7 ADC 6 VOUT R 8 5 V 9 PA2 10 AGND Table 5 8 Keyboard Xl Mother board X8 Pin No Signal 1 Xl Xl row 2 X2 X2 row 3 X3 X3 row 4 X4 X4 row 5 Y...

Page 101: ...1 15 VDIRTY 2 GND DIRTY 3 NC 4 NC 5 NC 6 15 V 7 ADC3 O2 8 NC 9 15 v 10 AGND Signal Table 5 10 Gas zero valve Mother board X11 Pin No Signal 1 15 VDIRTY 2 ZERO SIGNAL 3 NC Table 5 11 Power supply board...

Page 102: ...al 1 15 VDIRTY 2 OCCLUS SIGNAL 3 N C Table 5 13 Mother board test connector X13 Pin No Signal AGND ADC4 VOUT IR AIN4 SSIGN ADCl AWP ADC3 O2 ADC5 P AWF Table 5 14 Video control board X2 Video unit main...

Page 103: ...PROM CLB dark 4 Temp IN OUT 5 15 V 6 15 V 7 SYNC IN OUT 8 EEPROM R 9 EEPROM WRB 10 EEPROM 2CS clear 11 MOTOR B 12 5 V 13 15 VDIRTY 14 DGND Table 5 16 Front panel SpO2 connector SpO2 measuring board Xl...

Page 104: ...Xl Line transformer Pin No Signal 1 22 VAC secondary voltage of 2 GND the line transformer and 3 22 VAC ground Table 5 18 Power supply board X2 IR lamp Table 5 19 Power supply board X3 Fan Pin No Sign...

Page 105: ...brightness control Video brightness control Video brightness control Comp video DGND Table 5 21 Power supply board X8 Loudspeaker Pin No Signal 1 DAC5 ALARM 2 26 V power for loudspeaker 3 DAC7 Table 5...

Page 106: ...red by pressure transducer Bl Overpressure and negative pressure in airways are measured by another pressure transducer B2 Signal amplification After the transducer B2 the PRESS signal is sent to diff...

Page 107: ...g form The one half of the multiplexer A9 multiplexes the analog output to PRESS FLOW and VOL signals after the voltage follower A8 Transducer offset control One signal DAC3 from the multiplexer A9 is...

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Page 110: ...13 NC 14 NC 15 NC 16 NC 17 RESET 18 NC 19 NC 20 NC 21 RxD 22 NC 23 N C 24 N C 25 NC 26 NC 27 NC 28 NC 29 NC 30 15 VDIRTY 31 NC 32 GND DIRTY NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC DIR NC NC...

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Page 112: ...ner that the angle that the light approaches it changes As the angle changes the wavelength of the IR light that is allowed to pass through the filter changes 30 samples of the signal are taken of the...

Page 113: ...CAPNOMAC ULTIMA TM SERVICE MANUAL Preamplifier Figure 5 29 ASX Agent identification benches January 15th 1997 6...

Page 114: ...e measurement signal from preamplifier board The processor uses an internal bus to access EPROM D7 64k x 8bit SRAM D6 8k x 8bit and two D A converters It communicates with the main CPU through a seria...

Page 115: ...on the preamplifier board Motor control The motor is driven by DC voltage generated by D A converter D8 and operational amplifier A9 The output of D8 is between 0 to 5 V With A9b the voltage is inver...

Page 116: ...mples are then linearized After that the background spectrum is subtracted Background is measured during the zeroing of ACX and ASX In ASX 100 the linearized spectrum is scaled to the same scale as th...

Page 117: ...ASX Preamplifier Board...

Page 118: ...signal VBIAS VBIAS Table 5 24 ASX preamplifier board Xl ASX board X2 Table 5 25 ASX board X5 Mother board X14 Pin No Signal 1 Analog ground 2 NC 3 NC 4 N C 5 15 V 6 15 V 7 DIRB not used 8 RXD 9 TXDB 1...

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Page 123: ...components or the reflectance sensor Al have failed the unit must be repaired and recalibrated at factory Temperature compensations and temperature zero can only be calibrated at factory DATEX ENGSTR...

Page 124: ...ith 6 cm long bushing and cotter f Four boards are attached to the horizontally positioned mother board in the center from f to r PVX board ACX measuring board CPU board and video control board These...

Page 125: ...for the picture tube is attached to the bottom plate with bushings Two magnetic valves damping chamber and the intermediary bottom plate assembly are screwed to the bottom plate The picture tube unit...

Page 126: ...for the gases CO2 N2O AA O2 to the ACX memory If some dust or water has entered the measuring chamber zeroing of the gases require higher zero constants than before depending on the contamination leve...

Page 127: ...Response time difference between gases is displayed as DIFF The fall times and time differences reflect the condition of the D FEND water trap filter The maximum allowed times are as follows CO2 ASX d...

Page 128: ...5Vir GNDir Infrared channel voltage About 10 V when probe is attached and pox dac gain is high enough 0 V without probe Infrared channel amplified alternating component It has a waveform similar to t...

Page 129: ...eck CPU board Change the board if necessary 10 EXTERNAL RAM error Check CPU board RAM read write failure Change the component 11 ROM checksum error Check CPU board EPROM read error Change the componen...

Page 130: ...31 ACX ADC error Can appear occasionally with the item 17 ACX sampling system error and it s OK If appears WITHOUT the item 17 it means HW malfunction Caused by too long AD conversion time Check ACX...

Page 131: ...ailed Quite rare and can appear for an elusive reason 54 COMMAND NOT IMPLEMENTED Ultima is sending wrong commands which PVX cannot recognize 55 WRONG RESPONSE FROM PVX PVX is giving wrong response to...

Page 132: ...ing the NORMAL SCREEN key 6 3 4 Factory reset You should perform the factory reset if you have changed the software EPROM you have changed CPU board or the EEPROM chip on the CPU board Activate factor...

Page 133: ...compensations The Flow Volt Value of Flow0 after pressure and temperature compensations is displayed Display range 0 to 4095 Vol Exp Vol Insp Volumes of expired inspired gas are displayed in ml unit D...

Page 134: ...n degrees centigrade Can operate zero valves manually When Valves is in ON position check the following items a that the Pres Awp value is between 0 1 and 0 1 and it can be adjusted by Pres Zero b tha...

Page 135: ...FF gives faster response on other measurements ZERO CAL Measure background and calibrate timeoffset and lambda0 FILTER ON OFF Software filtering ON or OFF ON is the normal setting for measurement OFF...

Page 136: ...ation Cal gas 70 other agents 85 for a pure agent Noise SD noise NOTE Interpret the value only when no gas is fed FILTER is OFF and after a minimum of one minute stabilization time 80 Peak norm and Pe...

Page 137: ...X 100 200 is calibrated together with the gas calibration of the ACX a Press ZERO CAL to start calibration Zeroing is done first b Feed cal gas until TIME OFFSET is OK c EEPROM column shows the previo...

Page 138: ...for checking working pressure Program sets initial occlusion and air leak limits The monitor is now ready for use Waveforms and numerical data appear on the screen The message CALIBRATING GAS SENSOR...

Page 139: ...ROR message Check CPU board RAM read write problem This message possibly appears in start up Go on to the following electronics troubleshooting sections ROM CHECKSUM ERROR message Check CPU board EPRO...

Page 140: ...Traces of cleaning or disinfecting agent in the water trap container affecting the readouts Let the container dry properly after disinfection before use Bad or missing SpO2 waveform and reading Fault...

Page 141: ...FEND TM water trap should be changed when the occlusion alarm comes on during the monitor start up sequence in normal use CAUTION The special internal sample tube is mechanically fragile Sharp bends w...

Page 142: ...hen the sampling line is totally filled with water Check that all the water goes into the trap container and not into the monitor 3 STEAM TEST FOR THE SPECIAL TUBE Choose halothane as anaesthetic agen...

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Page 144: ...he preamplifier board AGC amsrplifier A4 faulty Coarsely erroneous or missing reference voltage Timing pulses missing Either CO2 N2O or AA response missing Analog switch faulty or control pulses missi...

Page 145: ...st the gain trimmer of O2 measuring unit If not possible replace the measuring unit CO2 N2O gas analog voltages out of range over about 9 V Measuring chamber contamination or failure on measuring unit...

Page 146: ...es and leaks CAUTION Never apply an overpressure to the O2 measuring unit as the pressure transducer may be permanently damaged If O2 zero error message is displayed check the O2 measuring unit output...

Page 147: ...roubleshooting chart Finger in probe and connected to CAPNOMAC ULTIMA TM see Figure 5 12 for signal waveforms NOTE When doing any work on the measuring board care has to be taken that the patient isol...

Page 148: ...ic the processor is not running d RESET CPU pin 9 is normally low but pulled up to 5 V for a moment after power up If RESET is constantly high check the 5 V supply line for spikes or low voltage The a...

Page 149: ...MAC ULTIMA TM SERVICE MANUAL 6 20 6 4 8 Video ASIC board troubleshooting Due to the number of components in video ASIC board we recommend changing the complete board in case of failure January 15th 19...

Page 150: ...E CAUSE REMEDY No voltages Both switcher voltages missing Secondary fuses F3 and F4 blown NOTE They usually get blown at the same time Voltage reference A2 blown L3 blown One switcher voltage missing...

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Page 154: ...NOTE Do not use other cleaning agents such as blood gas electrode cleaners They may damage the unit Use only DATEX ENGSTROM Cleaning Fluid 85969 Cleaning procedure Tools needed 10 ml syringe water gla...

Page 155: ...Let the monitor run at least 30 minutes before checking the calib zero in the service mode n If the zero value is still more than 61000 repeat the procedure with the Cleaning Fluid NOTE After cleaning...

Page 156: ...alibration and checks of all limits in ASX service menu NOTE Pressure transducers Bl B2 and EEPROM D4 on the PVX board are replaced only at the factory NOTE The agent identification bench ASX should b...

Page 157: ...nsiderable effect on the flow The flow rates are adjusted by changing the flow resistance cassettes constriction cassettes in the sampling system See Table 5 2 for the alternative cassettes The adjust...

Page 158: ...nce in CO2 absorber flow Constr No Nominal value see Figure tolerance ml min 7 1 22 200 180 to 220 23 10 to 26 21 45 to 60 24 26 to 35 20 more than 180 when zeroing c Flow rate of CO2 absorber is meas...

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Page 160: ...pressure of the O2 sensor measurement flow b Press the 2 key to open the pressure valve Now the PRE value shows the pressure of the reference flow c Subtract the value gained in step 2 from the value...

Page 161: ...5 of connector X13 on the mother board Let the monitor draw in room air and adjust the voltage to zero with the O2 measuring unit trim resistor designated ZERO see Figure 7 2 in the O2 module pc board...

Page 162: ...s frequency Fine adjustment is seldom necessary However if you wish to reduce the effects of mechanical resonance peaks of the cabinet which appears as high noise level of the O2 measuring unit analog...

Page 163: ...ent There is one adjustable capacitor on the CPU board for real time clock oscillator frequency It is factory adjusted but may need to be readjusted if some components are replaced Real time clock osc...

Page 164: ...Philips CRT display board rev 07 adaptation 27 only Basic brightness adjustment Horizontal width Vertical height Horizontal positioning Horizontal linearity Focus Trimmer potentiometer P4 Trimming in...

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Page 167: ...sion pressure limit is set during start up Attach sampling line before turning monitor on Turn the power on The monitor performs a start up and self test procedure Wait until message CALIBRATING GAS S...

Page 168: ...NTIFIED comes up the identification is functioning properly Note ASX softwares of level 1 0 and 1 1 are not capable to identify calibration gas R23 and the MIXED AGENT message will appear instead of C...

Page 169: ...turation value SpO2 94 to 99 and draws a waveform shown here Connect printer with measurement cable to Serial Analog I O connector on the rear panel Make sure that the voltage changes in synchronizati...

Page 170: ...sure that the monitor initialization is over Stage occlusion by blocking the sampling line Check that the Occlusion alarm comes on Check both audible and visual alarms 7 GAS SAMPLING SYSTEM CHECK Per...

Page 171: ...ted to the D lite TM as are during normal use Work on the calibration pump slowly When the piston is pulled out the waveform V should be above the dotted line When pushed in below the dotted line If c...

Page 172: ...hould be displayed If it s not displayed the monitor should be serviced by qualified service personnel 12 VERIFICATION AND FINAL CHECKS Check the leakage current of the unit Check the condition of all...

Page 173: ...Gas calibration Monitors with Agent Identification 29 Cal gas identified 30 Peak normal 31 Peak normal Peak mirror 31 ASX calibrated Monitors with Patient Spirometry 32 Spirometry connectors 33 36 Lea...

Page 174: ...or at least once a year in order to ensure proper functioning of the monitor Put the checking notes on the preventive maintenance check list The parts included in the Preventive Maintenance Kit are re...

Page 175: ...3 0 0 4 O 2 55 4 N2O 33 4 If the values are out of the limits perform gas calibration before proceeding to the next item Push the Mark Reset key as long as the Startup menu appears Enter the Service...

Page 176: ...n change replace the zero valve Note If any of the constriction cassettes was exchanged the leak test should be performed again Block the tip of the sampling line by your finger until the PRE value be...

Page 177: ...as calibration Note The final gas calibration is not recommended to be performed before 30 minutes warm up time For monitors that contain the Agent Identification Enter the ASX Service menu Feed calib...

Page 178: ...on the D lite is 10 94 or newer If the system leaks heavily no pressure will be generated If there is a small leak in the connections the monitor will measure a pressure difference which is then inter...

Page 179: ...r make sure that the tubes and cables are not pinched between the PC boards and covers Clean or replace the dust filter If not replaced in item 3 Perform electrical safety check and leakage current te...

Page 180: ...8 883899 NOTE New main software and the High Speed CPU board are compatible with the old and new SpO2 measuring board and with ASX 100 ASX 200 ACX 100 and ACX 200 sensors NOTE The SpO2 measuring board...

Page 181: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 9 2 Power related parts Item Description Gas measurement related parts January 15th 1997 6...

Page 182: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 9 3 Front panel related parts Item Description Order No Rear panel related parts January 15th 1997 6...

Page 183: ...CAPNOMAC ULTIMA TM SERVICE MANUAL Other external parts January 15th 1997 6...

Page 184: ...00 white 879016 879245 879244 Fourth stage autumn 1991 ULT 1 xx 03 white 879016 2 1 ULT 1 27 02 white 879016 2 1 ULT S xx 03 white 879016 2 1 ULT S 27 02 white 879016 2 1 ULT S 25 00 white 879016 2 1...

Page 185: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 9 6 January 15th 1997 6...

Page 186: ...em description Extension board lifts the board above the stack of boards to allow measurements Quick cal calibration gas Reusable gas valve Flowmeter Spirometry test pump Spirometry tester Order No 87...

Page 187: ...CAPNOMAC ULTIMATM SERVICE MANUAL 9 8 Figure 9 1 Exploded picture of the monitor all except 27 model 0 7...

Page 188: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 9 9 Figure 9 2 Exploded picture of the monitor 27 model revisions 08 and lower...

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Page 191: ...gure 5 2 1 Gas sampling system layout without i parameter Tube No Part Code PCS Table 5 1 1 Tube lengths without i parameter Note Constriction cassettes are selected to adjust proper flow rates See Ta...

Page 192: ...Figure 5 2 2 Gas sampling system layout with i parameter Table 5 1 2 Tube lengths with i parameter Tube No Part Code Length mm Note Constriction cassettes are selected to adjust proper flow rates See...

Page 193: ...DATEX CAPNOMAC ULTlMATM SERVICE MANUAL 5 12 Figure 5 5 Preamplifier parts layout and schematic diagram board modification level 8 and higher March 1st 1993 3...

Page 194: ...itcher controller circuit D1 which is used without any feedback from the secondary of T1 D1 performs as an oscillator of about 45 kHz It also limits the current through T1 if overloading occurs The is...

Page 195: ...patient isolation barrier in serial mode PA2 and is converted into parallel mode by a shift register D4 The signal level at 14 A3 is adjusted to 3 to 8 V by the CPU The amplified signal pulses are se...

Page 196: ...DATEX CAPNOMAC ULTIMATM SERVICE MANUAL 5 22 Figure 5 10 SpO2 Measuring board block diagram and schematic diagram part 1 board modification level 8 and higher March 1st 1993 3...

Page 197: ...DATEX CAPNOMAC ULTIMATM SERVICE MANUAL 5 23 Figure 5 11 SpO2 Measuring board parts layout timing diagram and schematic diagram part 2 board modification level 8 and higher March 1st 1993 3...

Page 198: ...DATEX CAPNOMAC ULTIMATM SERVICE MANUAL 5 24 Figure 5 12 SpO2 Measuring board signal waveforms and schematic diagram part 3 board modification level 8 and higher March 1st 1993 3...

Page 199: ...DATEX CAPNOMAC ULTIMATM SERVICE MANUAL 5 25 Figure 5 13 SpO2 measuring board schematic diagram part 4 board modification level 8 and higher March 1st 1993 3...

Page 200: ...directly used for analog multiplexers MUX and serial channel 0 ASCII computer output The computer output is explained in Appendix A The three memory chips are jumper selected for 1M bit program EPROM...

Page 201: ...scanner which key was pressed The microprocessor s RS 232 is connected to Serial Analog I O connector computer output Duart channel A is connected to Aux I O connector graphic output and duart channel...

Page 202: ...DATEX CAPNOMAC ULTIMATM SERVICE MANUAL 5 28 Figure 5 14 CPU board block diagram and schematic diagram part 1 board modification level 8 and higher March 1st 1993 3...

Page 203: ...DATEX CAPNOMAC ULTIMA SERVICE MANUAL 5 29 Figure 5 15 CPU board parts layout and schematic diagram part 2 board modification level 8 and higher March 1st 1993 3...

Page 204: ...er configuration and schematic diagram part 3 board modification level 8 and higher CONNECTOR JUMPER MEMORY TYPE X2 X4 X3 X5 X6 1 2 D6 32k x 8 RAM 2 3 D6 8k x 8 RAM 1 2 D1 512k 1M EPROM 2 3 D1 2M 4M E...

Page 205: ...he CPU via the system bus and converts them to operations on a bit image in the video RAM memory The video RAM is then continuously scanned by addressing logic and a video shift register to produce a...

Page 206: ...DATEX CAPNOMAC ULTIMATM SERVICE MANUAL Figure 5 17 Video control board block diagram May 2nd 1991 1...

Page 207: ...DATEX CAPNOMAC ULTIMATM SERVICE MANUAL 5 33 Figure 5 18 Video control board parts layout and timing diagram board modification level 8 and higher May 15th 1990...

Page 208: ...DATEX CAPNOMAC ULTIMA SERVICE MANUAL 5 33 Figure 5 18 Video control board parts layout and timing diagram November 1st 1993 4...

Page 209: ...DATEX CAPNOMAC ULTIMA SERVICE MANUAL Figure 5 18 Video control board parts layout and timing diagram Board modification level 3 and higher June 1st 1994 5...

Page 210: ...DATEX CAPNOMAC ULTIMATM SERVICE MANUAL 5 34 Figure 5 19 Video control board schematic diagram board modification level 8 and higher September 1st 1992 2...

Page 211: ...DATEX CAPNOMAC ULTIMA SERVICE MANUAL 5 34 November 1st 1993 4...

Page 212: ...DATEX CAPNOMAC ULTIMA SERVICE MANUAL 5 34 a Figure 5 19 Video control board schematic diagram Board modification level 3 and higher...

Page 213: ...DATEX CAPNOMAC ULTIMA SERVICE MANUAL 5 36 Figure 5 20 Power supply board block diagram May 2nd 1991 1...

Page 214: ......

Page 215: ...DATEX CAPNOMAC ULTIMA SERVICE MANUAL 5 38a Figure 5 22a Transformer diagram and schematic diagram part 3 board modification level 3 and higher November 1st 1993 4...

Page 216: ...P R O P E R L Y E N T E R S E R V I C E M O D E C H E C K V A L V E S Y 1 A N D Y 2 C H E C K T R A N S I S T O R V 4 P R O C E S S O R D 5 P I N 6 S H O U L D B E H I G H 5 V W H E N T H E V A L V E...

Page 217: ......

Page 218: ......

Page 219: ...r data recording with a computer The monitor s serial output has to be set to NUMERIC MODE in STARTUP USER CONFIGURATIONS menu The serial communication protocol is transmission rate 1200 b s 8 data bi...

Page 220: ...FiAA primary gas x 10 FiAA secondary gas x 10 Gas pressure mmHg MAC x 10 Recorder output Status Pulse rate SpO2 IRED ampl RED ampl Gain Status See Notes on the following page U03 string U04 string str...

Page 221: ...z No identification H E I D or S Identified gas Halothane Enflurane Isoflurane Desflurane or Sevoflurane F Freon Calibration gas M Mixture In case of mixture first digit is M second digit is H E I D...

Page 222: ...ings Occlusion Air Leak Open gas circuit Apnea Rebreathing Anesthetic detected in expiration but not selected by user Anesthetic detected in inspiration but not selected by user No probe Probe off Pul...

Page 223: ...ple No pulse Low limit set to 40 beats min low or high aa alarm limit violation no longer exist in inspiration ANE ane ISO iso HAL hal ENF enf SEV sev DES des hhh high limit lll low limit zzz violatin...

Page 224: ...ed N2O zero error Zeroing N2O sensor failed AA zero error Zeroing AA sensor failed Language interpretation German English KAL CAL PF PR NG AA CO2 0 fehler CO2 zero error O2 0 fehler O2 zero error N2O...

Page 225: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 12 7 Table 12 1 Status Code Interpretation 1st digit 1 and 1st digit 2 and January 15th 1997 6...

Page 226: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 12 8 Status code definition cont 1st digit 7 January 15th 1997 6...

Page 227: ...e P N 873152 to satisfy medical electronics safety requirements Newer printers CCP 104 xx 01 are IEC 601 1 class II devices and do not require an isolated cable The non isolated connecting cable is P...

Page 228: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 12 10 Figure B l Schematics of the isolation box board modification level 1 and higher January 15th 1997...

Page 229: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 12 11 Figure B 2 Layout and assembly of the isolation box board modification level 1 and higher January 15th 1997 6...

Page 230: ...T EtAA LOW EtAH BAS FiAA HIGH FiAH HAUTE FiAA LOW FiAH BASSE EtAA 3 MAC EtAH 3 MAC SELECT AGENT SELECT AGENT xx SELECTED xx SELECT ALC DETECTED ALC DETECTE MIXED AGENT MELANGE AH UNKNOWNAGENT AGENT IN...

Page 231: ...CAPNOMAC ULTIMA SERVICE MANUAL 12 13 January 15th 1997 6...

Page 232: ...CAPNOMAC ULTIMA TM SERVICE MANUAL 1 2 1 4 Leak Disconn Obstr Fuite Deconn Obstr Leck Diskonn Obstr January 15th 1997 6...

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