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Datex-Ohmeda S/5 M-P, Technical Reference Manual Slot

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Pressure Module, M-P and Pressure Temp Module, M-PT

Document No. 800 1013-1

23

4.2

 

Troubleshooting flowchart

Figure 8

Troubleshooting flowchart

Possibly faulty 
M-P/PT module

Take all modules out
of the Frame

Insert M-P/PT and turn
the power on

Does fault
still appear?

Fault not in M-P/PT
module

No

Module-ID 
on screen?

Does another 
module work
in the same slot?

Yes

No

No

Check front panel key 
functions in Service
menu

Do they work?

Yes

Check front panel unit 
and PT board to 
find culprit. Replace if 
necessary

Yes

No

Has EEPROM
failed

Has Temp
measurement 
failed?

Has InvBP 
measurement
failed

No

No

Yes

Yes

Yes

Recalibrate the temp
channels

Yes

Enter the Service menu

Replace the PT board

Replace the PT board

Replace the PT board

Recalibrate the 
InvBP channel

OK ?

OK ?

No

No

Summary of Contents for S/5 M-P

Page 1: ...to change without notice Document No 800 1013 1 June 2001 Datex Ohmeda Inc 3030 Ohmeda Drive 53707 7550 MADISON WIS USA Tel 1 608 221 1551 Fax 1 608 222 9147 www us datex ohmeda com Datex Ohmeda Division Instrumentarium Corp P O Box 900 FIN 00031 DATEX OHMEDA FINLAND Tel 358 10 394 11 Fax 358 9 146 3310 www datex ohmeda com Instrumentarium Corp All rights reserved ...

Page 2: ......

Page 3: ...od pressure 4 2 1 2 Temperature 4 2 2 Main components 4 2 2 1 PT board 6 2 3 Connectors and signals 10 2 3 1 Module bus connector 10 2 3 2 Front panel connectors 11 2 3 3 Other connectors 11 3 Service Procedures 13 3 1 General service information 13 3 2 Service check 13 3 2 1 Recommended tools 13 3 3 Disassembly and reassembly 18 3 4 Adjustments and calibrations 19 3 4 1 Invasive pressure calibrat...

Page 4: ... PT Rev 02 31 6 1 9 Front panel stickers for AS 3 modules square buttons 31 6 1 10 Front panel stickers for S 5 modules round buttons 31 7 Earlier Revisions 33 APPENDIX A 35 Service check form A 1 TABLE OF FIGURES Figure 1 Datex Ohmeda M PT and M P Module 1 Figure 2 Front panel of M P and M PT Module 5 Figure 3 PT board block diagram 6 Figure 4 Pressure transducer principle of operation 7 Figure 5...

Page 5: ...les are single width plug in modules designed for use with the S 5 monitors Both modules provide invasive pressure measurement Additionally the M PT module provides temperature measurement The M PT module also has a connector for direct ECG and pressure signal output NOTE Do not use identical modules in the same monitoring system The modules M P and M PT are considered as identical modules Figure ...

Page 6: ...Upper limit is adjustable between 10 and 300 mmHg in steps of 10 Lower limit is 10 of selected upper limit below zero Sweep speed 12 5 25 50 mm s DIGITAL DISPLAY Range 40 320 mmHg Resolution 1 mmHg WAVEFORM DISPLAY Range 30 300 mmHg HEART RATE FROM ARTERIAL PRESSURE Measurement range 30 250 bpm Resolution 1 bpm Accuracy 5 bpm or 5 whichever is greater 1 2 2 Temperature Measurement range 10 45 C 50...

Page 7: ...t and P1 digital displays are averaged over 5 seconds and updated at 5 seconds intervals All other pressures have respiration artifact rejection NOTE The accuracy of the measurement may be different from that specified depending on the transducer probe being used Please check the transducer probe specification 1 3 2 Temperature Measurement accuracy 0 1 C 25 0 45 0 C 0 2 C 10 0 24 9 C Protection ag...

Page 8: ... resistor and measuring the current that flows through it Applying a constant current to flow through the resistor and measuring the voltage that is generated across it In S 5 module the two methods are combined in a form of a voltage divider The NTC resistor is connected in series with a normal resistor and a constant voltage is applied across them The temperature dependent voltage can be detecte...

Page 9: ...d through RS485 serial interface The power supply voltages to the module are generated in the power supply section of the monitor s Central Unit All electrical connections between the module and the Central Unit are established via 25 pin D type connector on the backside of the module P3 Zero P3 Zero P3 Signal Out T3 T4 P3 Figure 2 Front panel of M P and M PT Module ...

Page 10: ...rature sensors non volatile memory Figure 3 PT board block diagram ECG and pressure signal prosessing The PT module has the Signal Out connector for output of analog ECG and pressure signals The analog ECG output signals are made by detecting the pulse width modulated PWM ECG signal of the module bus The module detects the presence of the pacemaker pulses by following the ECG module Every time the...

Page 11: ...h depends on blood pressure and input supply voltage is calculated using the following formula Uout Uin Pressure 5 V where Uin 5 V Uout 25 V Pressure mmHg Pressure amplification is performed by the instrumentation amplifier The gain of the amplifier is set so that the level of the signal transferred to the A D converter stays within the measurement range even when there are circumstantial offsets ...

Page 12: ...dditionally there is an auxiliary logic power reset which keeps the reset active for about 500 ms despite the state of reset in the module bus A time constant determines the power up reset time There are components to prevent the module from sending data during reset The data transmission rate is 500 kbps RS485 Driver RS485 Driver Reset Data NData Reset in NReset in Send data Receive data send rec...

Page 13: ...ped from 15 Vdirty voltage from the Central Unit Power supply is a switched mode circuit where FET transistor switch is controlled by an oscillator using bipolar timer The frequency of the oscillator is about 30 kHz and pulse ratio 50 Controlling of the FET switch is slowed to suppress spurious interference A special pulse transformer is used in the circuit The transformer secondary circuit uses n...

Page 14: ...n No I O Signal 1 I RESET_RS485 2 I 15 VDC 3 I 15 VDIRTY 4 I 15 Vin 5 I O NDATA_RS485 6 I O DATA_RS485 7 Ground 8 I NRESET_RS485 9 I CTSB 10 O RTSB 11 I RXDB 12 O TXDB 13 Ground 14 I 32 VDIRTY 15 I GroundDIRTY 16 I CTSC 17 O RTSC 18 I RXDC 19 O TXDC 20 ON STANDBY 21 O PWM_ECG 22 RXDD_RS232 23 TXDD_RS232 24 I 5 VDCin 25 I 5 VDC Used in the M PT module ...

Page 15: ...onnected 9 Ground 10 Cable detection Signal out connector Sync out Pin No Signal 1 ECG out 1 V 1 mV 2 Pressure out 1 V 100 mmHg 3 ECG out 1 V 1 mV 4 Ground NOTE The ECG out signal is not available with modules M ESTP rev 01 M EST rev 00 and M ETP rev 00 2 3 3 Other connectors Keyboard connector X3 Pin No Signal Notes 1 N C Not connected 2 COSWITCH Not used 3 PSWITCH for zeroing of P3 4 fGND Floati...

Page 16: ... in the M PT module there are the following connectors connected on the board in addition to X1 and X4 Signal out connector X5 Pin No board Pin No fr panel Signal Notes 1 ECG OUT ECG to e g IABP 2 N C Not connected 3 4 GND 5VDCin GND 4 1 ECG OUT ECG to e g defib 5 N C Not connected 6 3 ECG OUT ECG to e g IABP 7 2 P OUT P3 to e g IABP 8 GND GND 5VDCin GND X5 1 8 Connector for temperature probes X8 ...

Page 17: ...ete procedures for a service check The service check is recommended to be performed after any service repair However the service check procedures can also be used for determining possible failures The procedures should be performed in ascending order The instructions include a check form Appendix A which should be filled in when performing the procedures The mark in the instructions means that the...

Page 18: ...ont panel sticker are intact all connectors are intact and are attached properly the module box latch and spring locking pin are intact Reattach the module box and check that the latch is moving properly Switch the monitor on and wait until the monitoring screen appears Configure the monitor screen so that all the needed parameters are shown for example as follows Monitor Setup Screen 1 Setup Wave...

Page 19: ...ne key Press the key at least for one second Check that the pressed key is identified i e the text for Button changes from OFF to ON in the service menu 7 Check that the Cable and Probe show OFF Plug a cable with an invasive blood pressure transducer into the front panel connector P3 Check that the Cable and Probe show ON and the pressure 8 waveform field appears onto the monitor screen NOTE Test ...

Page 20: ...rature test plug into the connector T3 Check that the Cable and Probe for T3 show ON and the corresponding temperature value appears onto the screen Perform the same check also for the channel T4 12 Check the temperature calibrations using temperature test plugs If the deviation on a temperature reading on the screen is more then 0 1 C calibrate the temperature channels according to the instructio...

Page 21: ...M 160 PACE WAVE NSR Use the channel BP1 for the connector P3 14 Connect an oscilloscope between the signal out connector pins 1 ECG out and 4 Ground 1 2 3 4 Check that an analog signal which corresponds with the ECG waveform on the screen comes out The output signal s ratio to the actual ECG signal should be around 1V 1mV Check that a similar output signal is coming out also from the pin 3 ECG out...

Page 22: ...owing way See the exploded view of the module 1 Remove the two screws from the back of the module 2 Pull the module box slowly backwards and detach it from main body Be careful with loose latch and spring pin for locking 3 To detach the PT board The board can be removed by detaching two screws on the folio side of the board near the front panel and disconnecting the two ribbon cables coming from t...

Page 23: ...00 mmHg 300 mmHg to the transducer The recommended pressure is 200 mmHg 6 Set the pressure on the display to match the pressure reading on manometer and press the ComWheel A tolerance of 1 mmHg is allowed 7 The text calibrated will appear on the display 3 4 2 Temperature calibration NOTE For the temperature calibration separate test plugs 25 C and 45 C are necessary A test set of two plugs is avai...

Page 24: ...0 5 Insert calibration plug 25 C into T3 T4 connector 6 Press the ComWheel 7 Insert calibration plug 45 C into T3 T4 connector 8 Press the ComWheel 9 Press in the protect button at the bottom of the module and select ON protect mode Release the button ...

Page 25: ...channel Offset is 150 mmHg Open the transducer to air and zero the channel Defective transducer Replace it and zero the channel Calibration failed message Unsuccessful calibrating of P3 number field possibly due to pulsating waveform Turn the transducer to sphygmomanometer and try again zeroing takes place first Gain is beyond the limits 20 of the default gain Replace the transducer Out of range 4...

Page 26: ...ibration Perform calibration If it does not help check that front panel connectors are properly connected to STP board No temperature displayed Wrong type of probe Temperature out of measurable range Temperature calibration not protected Use correct probe The range is between 10 and 45 C Set the Protection ON in the Service Menu ...

Page 27: ...PT module No Module ID on screen Does another module work in the same slot Yes No No Check front panel key functions in Service menu Do they work Yes Check front panel unit and PT board to find culprit Replace if necessary Yes No Has EEPROM failed Has Temp measurement failed Has InvBP measurement failed No No Yes Yes Yes Recalibrate the temp channels Yes Enter the Service menu Replace the PT board...

Page 28: ... Ohmeda S 5 monitors Document No 8001013 1 24 5 SERVICE MENU 1 Press the Monitor Setup key 2 Select Install Service password 16 4 34 3 Select Service password 26 23 8 4 Select Parameters 5 Select P PT module ...

Page 29: ...ed numeric values are displayed simultaneously Pressure value is a real time value and shown in mmHg Button the front panel key function can be confirmed by pressing the key and checking that OFF turns to ON Temp error shows whether the calibration of the temperature was successful or not Protect key shows normally OFF but turns to ON when the button at the bottom of the module is pressed Protect ...

Page 30: ... the module is pressed Set Config The module configuration should be set according to the module type The setting is possible only when the protection is set OFF The available selections are BP or PT The configuration setting should be checked if the PT board is replaced Calibrate T3 and Calibrate T4 The functions are for calibrating the temperature channels T3 and T4 The calibrations are possible...

Page 31: ...sure manometer to the P3 connector Select Calibrate P3 Leave the transducer to room air pressure 2 Press the ComWheel to start zeroing 3 Supply a pressure of 100 mmHg to 300 mmHg to the transducer The recommended pressure is 200 mmHg 4 Set the pressure on the display to match the pressure reading on the manometer and press the ComWheel ...

Page 32: ...ies are listed in the Patient Monitor Supplies and Accessories 6 1 1 Pressure Module M P Rev 00 4 1 2 3 5 Item Description Order No Membrane keypad 880101 1 Module box single width 886167 2 Spring pin for module box 879182 3 Latch for module box 879181 4 Cross recess screw M3x8 black 616215 5 Front panel unit M P 880044 6 STP board M ESTP Rev 01 M P Rev 00 01 880339 Use 885697 11 Metal frame 87918...

Page 33: ...TP board M ESTP Rev 03 04 M P Rev 02 882627 Use 885697 6 1 4 Pressure Module M P Rev 03 Item Description Order No 6 PT board M PT Rev 01 M P Rev 03 895047 19 EMC cover 884099 20 Protection plate 883946 21 Insulation plate for 883946 884121 The front panel unit includes all the connectors and input boards the part is recommended for stock 6 1 5 Pressure Module M P Rev 04 No new spare parts ...

Page 34: ...ck 616215 6 PT board M PT Rev 00 885697 7 Signal out connector M PT 884316 8 T Input connectors 884315 9 P Input connector 884314 11 Metal frame 879184 13 Cross cylinder head screw M3x6 61721 14 Cross cylinder head screw M3x12 628700 15 Cross cylinder head screw M3x6 628710 16 Shakebroof washer 63611 17 Membrane keypad 880101 18 Front panel frame M PT 883801 19 EMC cover 884099 20 Protection plate...

Page 35: ...rman EN English ES Spanish FI Finnish FR French IT Italian JA Japanese NL Dutch NO Norwegian PT Portuguese SV Swedish Adaptation M P Rev 00 03 Order No M PT Rev 01 Order No DA 892211 892210 DE 880488 885035 EN 880139 884004 ES 884201 886193 FI 888863 888864 FR 880130 885033 IT 886756 886758 JA 888308 888307 NL 886063 886330 NO 893569 893571 PT 895237 SV 885847 885845 6 1 10 Front panel stickers fo...

Page 36: ...daptation M P Rev 04 Order No M PT Rev 02 Order No DA 898768 898768 DE 898735 898759 EN 898734 898758 ES 898738 898762 FI 898741 898765 FR 898736 898760 IT 898739 898763 JA 898745 898769 NL 898737 898761 NO 898743 898767 PT 898734 898764 SV 898742 898766 ...

Page 37: ...ocument No 800 1013 1 33 7 EARLIER REVISIONS This manual also supports M P revisions 02 and 03 For service information on the earlier revisions please refer to P Module revision 00 Service Manual p n 880850 P Module revision 01 Service Manual p n 882580 ...

Page 38: ...Datex Ohmeda S 5 monitors Document No 8001013 1 34 ...

Page 39: ...APPENDIX A Service Check Form M P and M PT Document No 800 1013 1 35 APPENDIX A ...

Page 40: ...Datex Ohmeda S 5 monitors 36 Document No 800 1013 1 ...

Page 41: ...e engineer Date OK Test OK N A Test not applicable Fail Test Failed All modules OK N A Fail OK N A Fail 1 Internal parts 2 External parts 3 Installation Notes 4 Module software P PT 5 Communication and memories Notes InvBP measurement 6 Membrane keys 7 Cable and transducer detection 8 Calibration 9 Configuration BP PT 10 Test with patient simulator Notes ...

Page 42: ...est Failed TEMP measurement 11 Temperature probe detection 12 Calibration check 13 Temp test function Notes Signal output 14 ECG output 15 InvBP output Notes All modules 16 Electrical safety check 17 Functioning after electrical safety check 18 Final cleaning Notes Notes Used Spare Parts Signature ...

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