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SERVICE MANUAL - Frank`s Hospital Workshop

1. esses 4 6 4 2 8 4 Set Serial Port Baud Rate sss sss 4 6 4 2 8 5 Trend Type dna iis 4 6 4 2 8 6 Reset to Factory Defaults a se errereen 4 7 43 Service Mode sssss sese enne 4 7 4 3 1 Menu Item 1 Software Version Report 4 10 4 3 2 Menu Item 2 Knob and Lamp Test ssss 4 10 4 3 8 Menu Item 3 Button Test sseeene 4 10 4 3 4 Menu ltem 4 Speaker Test sssss esses 4 11 4 3 5 Menu ltem 5 Internal Configuration Code ICC Report 4 11 4 3 6 Menu ltem 6 Total Operating Hours Report 4 12 4 3 7 Menu Items 7 16 Error Log Record Report 4 12 4 3 8 Menu Item 17 Instrument Identification IID Report 4 13 4 3 9 Menu ltem 18 Power Status sss 4 13 4 3 10 Menu ltem 19 Persistent Time Sense Report 4 14 4 3 11 Menu Item 20 Reset to Factory Defaults 4 14 4 3 12 Menu Item 21 Initial Cluster Instrument Number Report 4 14 4 3 13 Menu Item 22 Enable Disable Latching Alarms 4 15 4 3 14 Menu Item 23 Enable Disable Alarm Silence Reminder 4 15 4 3 15 Menu Item 25 Dump EEPROM Data 4 15 4 3 16 Menu Item 28 Enable Disable Battery Charge Circuit 4 16 4 3 17 Menu ltem 29 Instrument Compatibility Report 4 16 4 3 18 Menu Item 30 S
2. esses eene ens 8 1 82 Repacking in Original Carton esee 8 1 83 Repacking in a Different Carton ssessseeeess 8 2 Section 9 Specifications 5 io ede e e beds 9 1 9 1 General conterere t Sm Ep de 9 1 92 Blectrical ete e testedot e metet 9 1 93 Physical Characteristics sese 9 2 9 4 Environmental iain edet ter etn 9 2 95 JAlanmns iui eaae ate olive ai D M m Pres 9 2 9 6 Factory Default Settings ssss see 9 2 94 Pertormarnce er bet e e ae EP RP ONEN 9 3 Appenaix ee e RE ID Ideft ts A 1 A1 Integrity Tests tie Ra bein ee MEUSE E EUM IER A 1 A2 Eror ypes e M A 2 A3 User Correctable Error Codes s seen A 3 A4 Failure Error Godes iacu ene ee edet cena A 3 A5 Internally Corrected Error Codes sees A 4 Technical Supplement itii seen edie S 1 S1 lnugoie Bei ER S 1 S2 Oximetry Overview esio aenieiai taedia rtea i a aaa aaa aaa rennen S 1 S2 1 Automatic Calibration seeeeeee S 1 S22 Functional Versus Fractional Saturation S 2 S23 Measured Versus Calculated Saturation S2 S8 Stackbus Interconnect ss sse S2 S4 Circuit Analysis aeaaea aan e aia nennen S 8 S41 Functional Overview seen S 3 S42 Circuit Description
3. sss seen S 4 94 24 SpO2 Module 2 o eO RP OTT ated S 4 94 2 2 UIF Module sse nne rns S 7 942 3 SPOL Controller 2 ttn etr b tla aS S 15 4 2 4 Communications Sub Module sss S 17 942 5 Display Board oi be ieee enti eee eerie S 19 S5 Schematic Diagrams sssss seen rns S 20 Table of Contents LIST OF FIGURES LIST OF TABLES vi 4 1 4 2 5 1 5 2 5 4 5 5 5 6 5 7 5 8 A 1 A 3 A 4 S4 1 4 2 S4 3 S4 4 S4 5 S4 6 N 3000 Front Panel North American ee eese 1 2 Self Test Display sesss sess nennen 3 3 Seral Port Interface m reete esae tb ers ead 3 11 N 3000 to External PC Connections sese 3 12 Battery Cover Removal sss essent ens 3 17 Speaker Test eeeeeeceeeeeaeeeeaaeseneeseeeee nnne tente 3 18 Serial Port Pin Locations soiit aei eana adana ia iaia iade 4 23 Battery Replacement seen 6 2 Removing the Battery ereere essent eren nnne 6 3 N 3000 Fuses resres a a E A AERE ERTE trennen nennen 6 4 N 3000 Corner Screws orsseuol ieg ae ia ianea Aiea 6 4 Opening the N 3000 Monitor ecccceeeeeeeeeeeeee eee 6 5 Handle Left Side Panel and Speaker Disassembly 6 6 Rear Panel and SpO2 Module Disassembly 6 7 Communications PCB Removal
4. tci een deed eens E crant occi 5 11 Error Typo S ee A 2 N 3000 User Correctable Error Codes esses A 3 N 3000 Failure Error Codes sssss esee A 3 N 3000 Internally Corrected Error Codes ccccccseesseceseeseeeeseeeaees A 4 J13 Inter Stack Connector sse 8 Agere m S 13 J12 J22 Inter Module Connector ccccccceceeecececeee ceeeeeeeeeeeeeeeeeeees S 14 J5 Display Connector arviosi i iiiikaiin taiii iaidd uiia lineni iaeiae S 14 J2 Speaker Connector sss sse enn S 15 J3 Knob Connector sei iiini a aeiaai S 15 SECTION 1 INTRODUCTION 1 1 1 2 1 2 1 1 2 2 1 2 3 1 3 Manual Overview Warnings Cautions and Notes N 3000 Pulse Oximeter Description Related Documents ROD 1 1 1 1 MANUAL OVERVIEW This manual contains information for servicing the Neal cor Symphony model N 3000 pulse oximeter Only qualified service personne should service this product Before servicing the N 3000 read the operator s manual carefully for a thorough understanding of operation WARNINGS CAUTIONS AND NOTES Warning Caution Note This manual uses three terms that are important for proper operation of the monitor Warning Caution and Note A warning precedes an action that may result in injury or death to the patient or user Warnings are boxed and highlighted in boldface type A caution precedes an action that may
5. ssessssss 2 1 23 Batterl88 socer teo haee eret A Dg Cre beue ure odu Aged 2 1 Section 3 Performance Verification sess 3 1 3 1 Introduction ccccccccessesssseseeee A EE renes 3 1 32 Equipment Needed eese nene 3 1 33 Performance Tests ccccccccecessesssee essere nennen 3 1 3 3 4 Battery Operation Test ssss sse 3 1 3 3 2 Battery Charge sss seen 3 2 339 3 Power up Testseite tein ee inei tren 3 3 3 3 3 1 Power On Self Test esse 3 3 3 3 3 2 Adult Power On Defaults and Alarm Limit Ranges 3 4 3 3 3 8 Neonate Power On Defaults and Alarm Limit Ranges 3 5 3 3 4 Operation with a Pulse Oximeter Tester 3 6 Bid Gedy SAAC Siz a asia trac op P port rixtec irs a 3 6 33 42 Alarm Silence es cdd etate dt cec tee oer ea der deg 3 7 3 3 4 3 Alarm Volume Control 3 8 3 3 4 4 Pulse Tone Volume Control ee 3 8 3 3 4 5 Dynamic Operating Range sss 3 8 3 3 5 Normal Operation sss esee 3 10 3 3 5 1 LED Excitation Test ssses eee 3 10 3 3 5 2 Operation with a Live Subject sessssssss 3 10 3 3 5 3 Serial Interface Test esesese eene 3 11 34 Safety VeStS iorum tI be tpi tei petrus dae 3 12 3 4 4 Ground Integrity ssssssssseeeeen 3 13 3 4 2 Electr
6. sse 6 8 Display PCB and UIF Board Disassembly ss sss 6 9 Knob Encoder Disassembly se eene 6 10 Knob Disassembly eeeesese essen entente rennen 6 10 N 3000 Expanded View e eese nens 7 2 Repacking the N 3000 naa aE nennen 8 1 Oxyhemoglobin Dissociation Curve ss esee S2 N 3000 Functional Block Diagram eene S 4 Timing Diagram us nce tial tein atthe tte e nente ae S 5 Internal External Stackbus Connections sess S 11 Communications Submodule Block Diagram sssse S 17 Display Board Block Diagram seen S 19 Serial Port Voltages ssss sss entr enne 3 12 Configuration Mode Menu sssssseeeeeenennenen nnn 4 2 Configuration Menu c ccccsceceeeeeeeeeeee eene neret rennen nnns 4 5 Service Mode Steady State Main Menu ss esses 4 9 Problem Categories cccccecesceceseeceeee ceceeeeaeseeeeeseneeseaeeeeaees tnnt 5 2 Power Problems inin eee deer e eec dde redes 5 3 N 3000 Failure Error Codes sssss esee 5 5 Buttons Knob Problems ee esee 5 7 Display Alarms Problems s eee 5 8 Operational Performance Problems sss 5 9 Stack Problems dp t ree o E eit dee 5 10 Serial Port Problems
7. 418 This function allows you to validate sensors and or the operation of the SpO2 module 1 Connect the sensor to the N 3000 2 Verify that the SpO2 module is set for automatic operation using menu item 39 paragraph 4 3 27 3 Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 From the service mode steady state select menu item 34 by rotating the knob until 34 appears in the SpO29 display Press the UPPER ALARM LIMIT button 5 TheSpO2 red LED drive value between 0 255 is displayed in the PULSE RATE display Section 4 Configuration Mode Service Mode and Alarm Active Function To adjust the drive value rotate the knob The PULSE RATE display will flash Pressing the UPPER ALARM LIMIT button will set the displayed value in the SpO2 module which will cease its automatic operation The PULSE RATE display will stop flashing Press and hold the PRINT button to display the SpO2 corrected I R and red output signals as described in menu item 32 Releasethe PRINT button Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 23 Menu Item 35 SpO2 DM Gain Test This function allows you to validate sensors and or the operation of the SpO2 module 1 Connect the sensor to the N 3000 2 Verify that the SpO2 module is set for automatic operation using menu item 39 paragraph 4 3 27 3 Pressthe LOWER ALARM LIMIT button toreturn tothe service mode steady sta
8. 5 Toinstall the handle locate the small spring attached to one side After all PCBs and side panels have been properly seated in the top chassis install the handle into the cradlein a vertical position Guide the spring into the molded channel located at the rear of the top chassis while leaning the handle to the inside of the unit When properly seated the handle will rotate out with a small amount of spring tension and naturally return to the vertical resting position 6 Depending upon the level of repairs you may have to reconfigure the monitor s Internal Configuration Code ICC in order to get the monitor to operate properly Refer to the service mode section menu item 21 of this manual 6 11 Section 7 Spare Parts SECTION 7 SPARE PARTS 74 Introduction 7 1 INTRODUCTION Spare parts along with part numbers are shown below Numbers in parentheses correspond to those in Figure 7 1 ItemNo Description 1 PCB communications EPP SP 033446 11 Battery lithium small 3V 12mm 640112 16 PCB displa SP 033057 0 Buttons on standby and print 030524 15 Cover too without metal shield 024897 1 Buttons set of 2 alarm limit 030711 6 7 8 9 1 3 4 5 6 7 8 Lee PEE PC NA power cord no Speaker with lead connector and insulator 033115 3 Encoder with flexible type cable optical 291169 12 Battery lithium large 3V 23mm 642002 fd ae 6 B i es o
9. appears in the SpO296 display Press the UPPER ALARM LIMIT button The total number of operating hours is displayed in the SpO296 and PULSE RATE displays Possible values are from 0 to 999 999 hours Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 7 Menu Items 7 16 Error Log Record Report This report provides information regarding the last ten error codes recorded by the monitor the number of occurrences of that particular error and the number of operating hours at the last timethe error occurred The error log has ten entries menu items 7 16 as indicated below Refer to Section 5 Troubleshooting and the Appendix for an explanation of error codes Thefollowing procedure is for Error Log Record 1 menu item 7 Usethe same procedure to access Error Log Records 2 through 10 menu items 8 through 16 1 412 From the service mode steady state select menu item 7 by rotating the knob until 7 appears in the SpO296 display Press the UPPER ALARM LIMIT button The number 7 0 appears in the SpO 2 display Section 4 Configuration Mode Service Mode and Alarm Active Function Read the error code in the PULSE RATE display A value of 000 indicates that the menu item contains no error code If dashes are displayed the error log contents cannot be determined Rotate the control knob CW to display 7 1 in the SpO 2 display Read the number of occurrences of this particular e
10. eodeni Rp Re EP ii 5 4 5 6 2 1 User Correctable Error Codes sss 5 4 5 6 2 2 Failure Error Codes ssss sse 5 4 56 3 Buttons KnOob ceteri Gd rote d eet us 5 7 Table of Contents 5 6 4 Display Alame 840 28 eme eme 58 5 6 5 Operational Performance sssss sse 5 9 5 6 6 Stacked Operation s sss 5 10 5 6 7 Serial Port inon iinan iari a A nnne 5 11 Section 6 Disassembly Guide sse 6 1 6 1 WTOGUCHIOMN ne 6 1 6 2 Removing the Battery secreten esee 6 1 6 3 Battery Replacement sssssssseeene enne en 6 3 64 Fuse Replacement seue esee tnn 6 4 65 Monitor Disassembly ssseeeeene emn 6 4 6 5 1 Communications Board Switch Settings 6 5 6 6 Removing the Alarm Speaker sss sse 6 6 67 Removing the SpO2 PCB and SpO Controller PCB 6 7 68 Removing the Communications PCB sess 6 8 69 Removing the UIF PCB and Display PCB sss sss 6 8 6 10 Control Knob Assembly Replacement s esses 6 10 6 11 Lithium Battery Replacement sss eee 6 11 612 eassembly eden E te Deka act 6 11 Section 7 Spare Parts sou mice uc E 7 1 7 1 Inigoe Bei DEA 7 1 Section 8 Packing for Shipment sss sss 8 1 8 1 General Instructions
11. 5V power for green LED GREENPWR 10 Button signal BUTRES Load data to display drivers LED1EN 12 NC Serial data to display drivers SERDATA 18 Ground 1 2 3 4 Serial clock to display drivers SERCLK 11 NC 5 6 7 Current source to battery charging 14 Ground indicator CHRGPWR SCHEMATIC DIAGRAMS The following part locator diagrams and schematics are included in this section Figure Figure S5 1 Figure S5 2 Figure S5 3 Figure S5 4 Figure S5 5 Figure S5 6 Figure S5 7 Figure S5 8 Figure S5 9 Figure S5 10 Figure S5 11 Description SpO2 PCB Part Locator Diagram UIF PCB Part Locator Diagram SpO2 Controller PCB Part Locator Diagram Communications PCB Part Locator Diagram Display PCB Part Locator Diagram SpO2 Schematic Diagram UIF Schematic Diagram SpO2 Controller Schematic Diagram Communications Schematic Diagram Display Schematic Diagram Lower Docking Connector Schematic Diagram
12. Connector J13 Docking connector Bottom enclosure Figure 6 5 Opening the N 3000 Monitor Caution The battery fuse F2 on the Docking Connector PCB must be removed as indicated in paragraph 6 4 before disconnecting the docking connector cable from connector J 17 Failure to remove the fuse may result in damage to the Lower Docking Connector PCB or UIF PCB 5 The docking connector cable is plugged into connector J 13 on the UIF PCB Disconnect the docking connector cable from connector J 13 by gently pushing the top of the connector down while pulling straight up on the cable 6 5 1 Communications Board Switch Settings 1 To change the switch settings on your communications PCB complete steps 1 through 4 in paragraph 6 5 2 Theswitch settings on the Communication PCB are shipped for RS 232 communications and should be as follows refer to Figure 6 5 SW1 Positions 1 3 5 and 7 ON Positions 2 4 and 6 OFF SW2 Positions 2 4 and 6 ON Positions 1 3 5 and 7 OFF SW3 Position 1 ON Position 2 3 and 4 OFF J umper J 6in IGND position 6 5 Section 6 Disassembly Guide If a continuous 3 3 volt signal at pin 6 of the serial port Figure 3 3 is required as when using the Nalcor Puritan Bennet SOC 3 adapter change the SW3 settings as follows SW3 Position 1 OFF Position 2 3 and 4 ZON If RS 422 settings are required change SW1 and SW2 as follows SW1 Positions 1 3 5 and 7 OFF Positions 2 4
13. This time may decrease if the N 3000 is operating in the stacked configuration 1 Connect the Ndlcor Puritan Bennett SRC 2 pulse oxi meter tester to the monitor 2 Ensure that the monitor is not connected to AC power 31 Section 3 Performance Verification 3 3 2 Battery Charge 3 With the N 3000 turned off press the ON STANDBY button and verify that the BATTERY IN USE BATTERY LOW indicator lights after the power on self test is completed The monitor must operate for at least 4 hours The BATTERY IN USE BATTERY LOW indicator will start to flash about 15 minutes before the battery fully discharges Allow the monitor to operate until it automatically powers down due to the low battery If the monitor passes this test immediately recharge the battery Paragraph 3 3 2 steps 1 3 Perform this procedure to fully charge the battery or after the Battery Operation Test Paragraph 3 3 1 This procedure should be performed if possible before repair work is attempted L Connect the monitor to an AC power source using the external power supply Verify that the monitor is off and that the BATTERY CHARGING indicator is lit E Charge the battery for at least 14 hours Note TheBATTERY CHARGING indicator is timed to go out when the N 3000 has been turned off and connected to AC power for 14 hours Likewise if the monitor is turned on and connected to AC power for 14 hours with no power interruptions t
14. 3 second timeout you can then change the SpO2 lower alarm limit default If you press the UPPER ALARM LIMIT button you can then change the pulse rate upper alarm limit default This method can also be used while setting the other default alarm limits 4 2 3 Default SpO2 Lower Alarm Limit 1 From the configuration mode steady state press and release the LOWER ALARM LIMIT button The current default value is displayed in the SpO 2 display 2 Tochangethe lower alarm limit default value rotate the knob on top of the monitor You cannot increase the value higher than the current SpO 2 upper alarm limit setting The SpO2 default lower alarm limit cannot be set lower than 80 3 Return to configuration mode steady state 4 2 4 Default Pulse Rate Upper Alarm Limit 1 From the configuration mode steady state press the UPPER ALARM LIMIT button twice within 3 seconds The current default value is displayed in the PULSE RATE display Dashes appear in the SpO296 display the upper horizontal segments of the display indicating that the monitor is in the set pulse rate upper alarm limit mode 2 Tochangethe upper alarm limit default value rotate the knob on top of the monitor Y ou cannot decrease the value lower than the current pulse rate lower alarm limit default setting The pulse rate default upper alarm limit cannot be set higher than 250 3 Return to configuration mode steady state 4 3 Section 4 Configuration Mode Serv
15. After a system reset CSBOOT is configured to have one wait state and to be active only for the address range of the PROM Processor RAM U13 and U23 The RAMs are used by the processor to store program variables values and trend data Each is 128K x 8 arranged to provide 128K x 16 bits of RAM for use by the processor U3 address lines A17 through A1 are connected to both RAMs address lines A16 through AO U3 data bus lines D15 through D8 are connected to U 13 data bus lines D7 through DO for the upper 8 bits of data U3 data bus lines D7 through DO are connected to U23 data bus lines D7 through DO for the lower 8 bits of data The active low chip select inputs of U13 and U23 are connected to the CSO and CS1 chip select outputs of U3 The active high chip select inputs of U 13 and U23 are connected to the active low system reset to prevent writing to the RAM while the system power is coming on or while the watchdog reset is active The output enables of U13 and U23 are connected to digital ground The write enable inputs of U13 and U23 are connected to the data direction R W output of U3 At system reset the RAM chips are disabled and CSO and CS1 from U3 are disabled After system reset CSO and CS1 are configured to be gated with data strobe output DS from U3 When the N 3000 is in STANDBY RAM power is supplied by the backup battery output of the BQ2001 Power is maintained by the N 3000 lead acid battery and in the event that the
16. Reverse Normal Reverse Open Normal Open 313 Section 3 Performance Verification 3 4 2 2 Patient Source Current This test is in compliance with AAMI Standard ES1 Paragraph 3 3 2 Patient Source Current is measured between any individual patient connection and power earth ground L Configure the electrical safety analyzer as follows Function Leakage Range uA Connect the monitor AC plug to the electrical safety analyzer as recommended by the analyzer operating instructions for patient source current Connect the electrical safety analyzer leakage input lead to the monitor s sensor input connector The analyzer leakage indication must not exceed 10 microamps for all of the following AC power configurations with the monitor on AC LINE POWER LINE POLARITY GROUND CABLE Normal Normal Reverse Normal Reverse Open Normal Open 3 4 2 3 Patient Sink Current 314 This test is in compliance with AAMI Standard ES1 Paragraph 4 4 Patient sink current is measured in a patient connection if a source of 240 volts 50 Hz or 120 volts 60 Hz with respect to power earth ground is connected to that patient connection 1 Configure the electrical safety analyzer as follows Function Leakage Range uA Connect the monitor AC plug to the electrical safety analyzer as recommended by the operating instructions for patient sink current Connect the electrical safety analyzer leakage input lead to the monit
17. Table 5 8 Serial Port Problems Condition Recommended Action 1 The measured voltages 1 Ensure the Communications PCB switch at the serial port settings are as described in paragraph paragraph 3 3 5 3 are 6 5 1 incorrect If the condition persists replace the Communications PCB If the condition still persists replace the UIF PCB The measured voltages Perform the serial port loop back menu at the serial port item 61 and serial port transmit menu paragraph 3 3 5 3 are item 62 tests in the service mode correct but messages are paragraphs 4 3 29 and 4 3 30 If the tests not being transmitted or are successful recheck the message formats received you are sending to the monitor ensure that a good cable connection exists between PC and N 3000 and verify the baud rate using the service mode menu item 60 When connected to a PC in the RS 232 format a baud rate above 19 200 should not be used If the test fails ensure the Communications PCB switch settings are as described in paragraph 6 5 1 If the condition persists replace the Communication PCB If the condition still persists replace the UIF PCB 511 SECTION 6 DISASSEMBLY GUIDE 6 1 Introduction 6 2 Removing the Battery 6 3 Battery Replacement 6 4 Fuse Replacement 65 Monitor Disassembly 6 6 Removing the Alarm Speaker 6 7 Removing the SpO2 PCB and SpO2 Controller PCB 6 8 Removing the Communications PCB 6 9 Removing the U
18. but for which the instrument has effecti ve means of recovery This includes such things as watchdog resets data stream restarts due to data under run or stoppage and resource exhaustion for example not enough memory buffers or not enough CPU cycles An EEE Oxx code representing the failure is displayed and a low priority alarm sound is produced but no entry is made in the Error Log These errors represent hardware failure conditions that can be corrected by the user such as replacing a faulty sensor or cable They are not logged because they are caused by equipment external to the N 3000 They are readily identified by the 0 leading digit in the error number displayed along with EEE failure errors havea leading digit other than 0 This results in a shrill pulsing alarm sound Nothing is logged in the Error Log and the display is blank because the primary power in the instrument has failed This alarm is powered by the secondary back up lithium batteries located on the UIF board In all cases an attempt to store an error in the Error Log may fail due to failure or corruption of the Error Login EEPROM This condition alone does not constitute a failure error and operation of the instrument proceeds as if the error has been successfully logged A3 A4 Appendix USER CORRECTABLE ERROR CODES The error codes listed in Table A 2 are user correctable Table A 2 N 3000 User Correctable Error Codes Error Code Explanatio
19. min NEONATAL RF LOCK LINKED PULSE SEARCH LEADS OFF Figure 3 1 Self Test Display All displays turn off momentarily Digital displays individually light in a scanning or firefly test pattern while the test is taking place A single 1 second beep is produced and all displays again illuminate momentarily indicating that the automatic power on self test is complete The beep may sound before all the displays have lit in the scanning sequence The POWER ON indicator and the BATTERY CHARGING indicator are illuminated The Sp02 PULSE RATE and AUXILIARY displays are blank If an SpO2 sensor cable and sensor were connected 0 would be displayed in both the Sp02 and PULSE RATE displays This is referred to as the normal mode steady state Press and hold the NEW PATIENT NEONATAL button located on the rear panel for 3 seconds until you hear three beeps indicating that stored patient data is cleared 33 Section 3 Performance Verification 3 3 3 2 Adult Power On Defaults and Alarm Limit Ranges 34 Note This paragraph and paragraph 3 3 3 3 are written using Nellcor Puritan Bennett factory set defaults If your institution has preconfigured custom defaults those values will be displayed Factory defaults can be reset using the service mode procedure described in paragraph 4 3 11 Menu Item 20 Reset to F actory Defaults or the configuration mode procedure descr
20. 4 3 10 in Initial Cluster Instrument Number Report 4 3 12 Enable Disable Latching Alarms 4 3 13 Enable Disable Alarm Silence Reminder 4 3 14 Dump EEPROM Data 4 3 15 SpO2 IR and Red Offset Report 4 3 19 SpO2 IR LED DriveTest 4 3 21 1322 5 1373 EE SpO 2 Enable Automatic Operation 4 3 27 e0 SeSeralPoteaudrate E Serial Port Loop Back Test 4 3 29 330 Nellcor Puritan Bennett Internal Test DO NOT USH 4 9 Section 4 Configuration Mode Service Mode and Alarm Active Function 4 3 1 Menu Item 1 Software Version Report This report identifies the software versions of the UIF and SpO2 modules 1 From the service mode steady state select menu item 1 by rotating the Ndlcor Puritan Bennet knob until 1 appears in the SpO296 display Press the UPPER ALARM LIMIT button A 1 0 appears in the SpO 2 display TheUIF software version number is the left most digit in the PULSE RATE display The next two digits in the PULSE RATE display represent the major software revision number The minor software revision number is displayed in the AU XILIARY display Rotate the knob to change the number in the SpO 296 display to 1 1 The SpO2 software version number is the left most digit in the PULSE RATE display The next two digits in the PULSE RATE display represent the major software revision number The minor software revision number is displayed in the AU XILIARY display Press the LOWER ALARM LIMIT button to return t
21. 433 1 34 63 06 00 Nellcor Puritan Bennett Germany GmbH Black amp Decker Strasse 28 65510 Idstein Germany Tel 49 6126 5930 Nellcor Puritan Bennett Italia Srl Via dei Tulipani 3 20090 Pieve Emanuele M1 Italy Tel 439 2 90786404 To obtain information about a warranty if any for this product contact Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative Nellcor Puritan Bennett Durasensor Nellcor Symphony Oxisensor II and the Nellcor Puritan Bennett knob configuration are trademarks of Nellcor Puritan Bennett Incorporated Covered by one or more of the following U S Patents and foreign equivalents 4 621 643 4 653 498 4 700 708 4 770 179 4 869 254 5 078 136 and 5 351 685 TABLE OF CONTENTS List of Figures List of Tables Section 1 Introduction e sss esee esent 1 1 1 1 Manual Overview nennen enne nemen nennen 1 1 12 Warnings Cautions And Notes ssses essen 1 1 T2 WAN era E ERE incase DER HERREN 1 1 1 2 2 Caution iA ett ete ot teen coti ders 1 1 1 29 INOLG 2 contio uoce donee rt te p n E ceret ede esos 1 1 1 3 N 3000 Pulse Oximeter Description esses 1 1 1 4 Related Documents usss essere nnne 1 2 Section 2 Routine Maintenance sess sse 2 1 24 Cleaning Cte oO dor i tme Ste tete 2 1 22 Periodic Safety and Functional Checks
22. 7 7 T T Figure S4 2 Timing Diagram c Microprocessor Control of Isolated Circuitry Controller U 10 sheet 2 of schematic is an Octal 8 bit DAC The reference voltage for U 10 is 5 volts created by U39 Two U10 outputs VOUTA and VOUTB are used to program the LED outputs for the IR and RED channels The other six signal lines are used as logic lines Five control amplifier gain PDO and PD1 select the predemodulation gain while DMO DM 1 and DM2 control the demodulated gain The remaining signal line CAL U 10 pin 18 selects the calibration setting d LED Drive TheLED drive circuitry is shown in the lower left corner of the schematic diagram sheet 2 Signal outputs from U 10 RED LED and IR LED are used to control LED brightness These signals are multiplexed by U31 and buffered by one half of U 32 A voltage divider circuit consisting of R101 and R102 divide the multiplexed signal down to the proper voltage to use as a reference for the other half of U 32 Additionally R92 provides a path for stray current during the off period to ensure that the LEDs aretruly off Components R97 R98 and Q12 provide secondary protection against over current drive by disabling the control op amp if the voltage goes above 0 9 volts S 5 Technical Supplement S 6 Components R30 and C24 filter any high frequency noise on VCCI that is beyond the bandwidth of U 32 Finally Q13 R
23. Alarms 9 6 Factory Default Settings 9 7 Performance Designed to meet safety requirements of UL 544 CSA C22 2 No 601 1 M 90 IEC 601 1 IEC 601 1 type CF ISO 9919 RFE per VFG 243 EMC per IEC 801 series Protection Class Class per I E C 601 1 clause 2 2 4 Degree of Protection Type CF per I E C 601 1 clause 2 2 26 Lead acid Battery Type Operating time Recharge period Lithium Batteries 3V 12mm coin 3V 23mm coin Input Voltage Fuses External Power Supply Model SPS N or SPS N1 Rechargeable sealed internal 4 hours minimum on full charge when operating standalone 2 hours minimum when attached to an N 3100 blood pressure monitor 14 hours for full charge 6 hours for 1 hour of operating time 15VDC F1 1 0A 250V Slo Blow F2 2 5A 250V Slo Blow AC input 100 120 VAC 500 mA maximum 50 60 Hz 9 1 Section 9 Specifications 9 3 PHYSICAL CHARACTERISTICS Dimensions 6 8 cm x 23 9 cm x 14 7 cm 2 65 in x 9 41 in x 5 79 in Weight 1 8 kg 3 96 Ib 9 4 ENVIRONMENTAL Operating Temperature 5 to 40 C 441 F to 104 F Storage Temperature 40 to 70 C 40 F to 158 F Operating Altitude 396m to 43 139m 1 300 ft to 10 300 ft Relative Humidity 15 RH to 95 RH noncondensing 95 ALARMS Alarm Limit Range Saturation 20 100 Pulse Rate 30 250 bpm 96 FACTORY DEFAULT SETTINGS Factory Default Alarm Settings Adult Neonate SpO 2 Upper Alarm L
24. Neonatal Leads Off Pulse Amplitude Indicator Five Volt Supply L_ On Standby Battery Bus Battery In Use Buttons i On Standby Upper Alarm Limit A D Converter Lower Alarm Limit Print On Off Circuitry Display Board Figure S4 5 Display Board Block Diagram The display driver ICs consist of U1 U2 and U3 which usea three wire serial interface connect to the CPU U3 on the UIF module The three drivers used on this module are cascaded together and require that the host processor write 48 bits 16 x 3 to the board per each display update The front panel POWER LED DS23 is lit whenever the monitor power supply is on Notethat the drivers do not provide power to light the BATTERY CHARGING indicator current for this LED is provided by the UIF module There are four buttons on the display panel the ON STANDBY button SW2 is connected directly to the UIF module The other three U PPER ALARM LIMIT SW1 LOWER ALARM LIMIT SW3 and PRINT SW4 are resistor weighted and attached via one signal line to an A D channel of the UIF module U4 is a drain device used to guarantee a certain resistance value when a button is pressed S 19 Technical Supplement S 5 S 20 TheJ 1 connector pinouts are as follows 5V power for display drivers 8 NC 5V power for display drivers 9 ON button signal ONBUTTON
25. OFF or ON in the PULSE RATE display OFF SpO2 module is not in automatic operation ON SpO2 module is in automatic operation Rotate the knob to change the display and turn automatic operation ON or OFF Press the LOWER ALARM LIMIT button toreturn tothe service mode steady state 4 3 28 Menu Item 60 Set Serial Port Baud Rate This function allows you to set the default serial port baud rate 1 From the service mode steady state select menu item 60 by rotating the knob until 60 appears in the SpO29 display Press the UPPER ALARM LIMIT button The current baud rate in hundreds is displayed in the PULSE RATE display To change the default baud rate setting rotate the knob until the desired setting is displayed Note When connected toa PC in the RS 232 format a baud rate above 19 200 should not be used Press the UPPER ALARM LIMIT button to store the default setting 421 Section 4 Configuration Mode Service Mode and Alarm Active Function 4 Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 29 Menu Item 61 Serial Port Loop Back Test This test verifies that when the N 3000 is connected to a PC through the N 3000 serial port the serial port receive hardware is functional Note The N 3000 must be operating from AC power to perform this menu item 1 Turn the N 3000 off 2 Connect the N 3000 to a PC through the serial port 3 Execute your communication software
26. SRC 2 pulse oximeter tester includes the following tests 3 3 4 1 Alarms 3 3 4 2 Alarm Silence 3 3 4 8 Alarm Volume Control 3 3 4 4 Volume Control 3 3 4 5 Dynamic Operating Range Note This section is written using Nellcor Puritan Bennett factory set defaults If your institution has preconfigured custom defaults those values will be displayed Factory defaults can be reset using the service mode procedure described in Paragraph 4 3 11 Menu Item 20 Reset to Factory Defaults or the configuration mode procedure described in paragraph 4 2 8 6 Connect the SRC 2 pulse oximeter tester to the sensor input cable and connect the cable to the monitor Set the SRC 2 as follows SWITCH POSITION RATE 38 LIGHT LOW MODULATION HIGH MODE LOC RCAL 63 3 3 4 2 Alarm Silence Section 3 Performance Verification Press and release the ON STANDBY button to turn the monitor on After the normal power up sequence verify that the SpO296 and PULSE RATE displays initially indicate zeroes Note Thepulse bar may occasionally indicate a step change as the monitor is in the pulse search mode Verify the following monitor reaction a The pulse bar begins to track the artificial pulse signal from the SRC 2 b After at least five pulses the monitor displays a saturation and pulse rate within the following tolerances Oxygen Saturation Range 79 to 83 Pulse Rate Range 37 to 39 bpm C Thepulse beep will be heard d Theaudioalarm
27. SRC 2 tolerance Both displays are still flashing due to alarm limit violation Oxygen Saturation Range 79 to 83 Pulse Rate Range 37 to 39 bpm Ensurethe MODULATION switch on the SRC 2 is set to HIGH and verify that after a few seconds the monitor indications are within the tolerances listed in step 1 Move the MODULATION switch to LOW and verify that after a few seconds the monitor indications are within the tolerances listed in step 1 Move the LIGHT switch to HIGH 2 and verify that after a few seconds the monitor indications are within the tolerances listed in step 1 Move the MODULATION switch to HI GH and verify that after a few seconds the monitor indications are within the tolerances listed in step 1 10 11 12 13 14 15 16 17 18 Section 3 Performance Verification Move the RATE switch to 112 bpm After approximately 30 seconds verify that the PULSE RATE display has stopped flashing and that the display indications are within the tolerances shown below Oxygen Saturation Range 79 to 8396 Pulse Rate Range 110 to 114 bpm Nate Iftheunit has been configured for the latching alarm ON setting the HEART PULSE RATE display continues to flash despite the pulse rate being within upper and lower alarm limits Press the AUDIBLE ALARM OFF button to stop the flashing Refer to paragraph 4 3 13 to placethe unit in the latching alarm OFF setting Move the MODULATION switch to LOW and verify
28. UIF PCB and the Display PCB If the condition does not change replace the Display PCB If the condition still persists replace the UIF PCB Moisture or spilled liquids can cause an alarm to sound Allow the monitor to dry thoroughly before using If the condition persists replacethe UIF PCB Verify the problem with the service mode menu item 4 speaker test Replacethe speaker as described in Section 6 Disassembly Guide If the condition persists replacethe UIF PCB 5 6 5 Operational Performance Section 5 Troubleshooting Table 5 6 lists symptoms of problems relating to operational performance no error codes displayed and recommended actions If the action requires replacement of a PCB or module refer to Section 6 Disassembly Guide Table 5 6 Operational Performance Problems Condition Recommended Action ThePULSE 1 The sensor may be damaged replace it AMPLITUDE indicator seems to 2 indicate a pulse but the digital displays show zeroes SpO2or pulserate values change rapidly PULSE AMPLITUDE indicator is erratic If the condition still persists replace the UIF PCB The sensor may be damp or may have been reused too many times Replace it An electrosurgical unit ESU may be interfering with performance Move the N 3000 and its cables and sensors as far from the ESU as possible Plug the N 3000 power supply and the ESU into different AC ci
29. application Port settings should be set as indicated below Baud Rate 19200 or as set using menu item 60 Parity N Data Bits 8 Stop Bits 1 4 Turn on the N 3000 and place it in the service mode 5 Select menu item 61 by rotating the knob until 61 appears in the SpO296 display Press the UPPER ALARM LIMIT button 6 Typeany characters on your PC keyboard and verify that the characters are echoed on the PC screen This confirms that data received on the serial port receive lineis transmitted on the transmit data line 7 PresstheLOWER ALARM LIMIT button toreturn tothe service mode steady state 4 3 30 Menu Item 62 Serial Port Transmit Test 4 22 This test verifies that when the N 3000 is connected to a PC through the N 3000 serial port the serial port transmit hardware is functional Note TheN 3000 must be operating from AC power to perform this menu item l Perform steps 1 through 4 as indicated in paragraph 4 3 29 menu item 61 2 Select menu item 62 by rotating the knob until 62 appears in the SpO296 display Press the UPPER ALARM LIMIT button 3 Verify that a fixed pattern of bytes 0 through 255 is repeatedly sent on the transmit data line The characters are repeatedly sent on the transmit data line when menu item 62 is selected 4 Pressthe LOWER ALARM LIMIT button to return to the service mode steady state Caution Menu items 70 and above are for factory purposes only Adjustment of menu items 7
30. battery power from U 20 to RAMs U13 and U 23 the processor power fail circuitry when the 5V supply is below its lower limit Processor Power Fail Circuitry This circuitry sounds the piezo speaker if the processor fails to operate or the 5V power unexpectedly falls below its lower regulation limit e Connectors This section describes UIF connectors and pinouts other than the docking connector J 13 J 8 J 8is a 40 pin daughter board connector that interfaces the UIF module to the communications board This board uses only the first 16 pins on the connector Technical Supplement Table S4 2 J8 Connector 7 Ground A2 C Pin No e a 8 C Du 5 pes 71 sie 8s 9 20 CE 22 23 ES 26 26 27 28 C EN jst 32 99 NET 96 36 9 14 15 16 17 18 19 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 Technical Supplement J 12 22 These are two identical connectors that interface to the SpO2 module Power and stackbus signals are sent to these modules Additionally a connection between these two connectors allows the modules to communicate without stackbus if necessary Table S4 3 J12 J22 Inter Module Connector VDD Signal line from expansion module to SpO2 wo o e Signal line from SpO2 to expansion module n a a C J 5 Connector J 5 connec
31. cause of an instruments not compatible error message L F rom the service mode steady state select menu item 29 by rotating the knob until 29 appears in the Sp02 display Press the UPPER ALARM LIMIT button The number 29 0 appears in the SpO296 display The number in the PULSE RATE display is the sensorbus protocol version and revision number of the N 3000 Rotate the knob until 29 1 appears in the SpO 2 display Press the UPPER ALARM LIMIT button The number in the PULSE RATE display is the multicast version and revision number of the N 3000 Press the LOWER ALARM LIMIT button to return to the service mode steady state Section 4 Configuration Mode Service Mode and Alarm Active Function 4 3 18 Menu Item 30 SpO2 RCAL Report This function allows you to check the sensor RCAL value readings 1 2 Connect the SRC 2 tester or a compatible sensor to the N 3000 Select menu item 30 by rotating the knob until 30 appears in the SpO 2 display Press the UPPER ALARM LIMIT button Read the RCAL standard representation of the nominal sensor resistance in the PULSE RATE display If connected to an SRC 2 tester set the SRC 2 RCAL Mode switch to 63 The RCAL value 63 is displayed in the PULSE RATE display Set the SRC 2 RCAL Mode switch to 64 The RCAL value 64 is displayed in the PULSE RATE display Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 19 Menu I
32. chance of additional risk to the patient or caregiver Appendix A2 A 2 ERROR TYPES There are six classes of errors in the N 3000 as indicated in Table A 1 Table A 1 Error Types Error Type Description 1 Generic POST In this case nothing may happen or a shrill processor failure Initialization failure Failureerror at the end of initialization or during steady state operation Internally corrected error User correctable error Unexpected loss of power continuous alarm may sound and the display may go blank This represents a severe hardware failure F or example the UIF processor could not activate the display or speaker facilities An EEExxx code representing the failure is displayed and a low priority alarm sound is produced but no entry is made in the Error Log POST has proceeded tothe point that the UIF processor has control of the display and speaker facilities The error cannot be logged because the Error Log portion of the EEPROM has failed or internal communications to the Error Log cannot be established An EEExxx code representing the failure is displayed alow priority alarm sound is produced and a failure dass error entry is made in the Error Log These errors do not appear on the display neither do they cause an alarm However they are entered in the Error Log These errors represent events that have occurred in the instrument that are undesirable
33. enclosure to the UIF PCB as instructed in paragraph 6 5 of the Disassembly Guide section If the connection is good replace the UIF PCB The battery may be discharged To recharge the battery refer to paragraph 3 3 2 Battery Charge The monitor may be used with a less than fully charged battery but with a corresponding decrease in operating time from that charge If the battery fails to hold a charge replace the battery as indicated in Section 6 Disassembly Guide There are 15 minutes or less of usable charge left on theN 3000 battery At this point if possible cease use of the N 3000 on battery power connect it to its external power source and allow it to recharge approximately 14 hours The N 3000 may continue to be used while it is recharging Replace the UIF PCB 53 Section 5 Troubleshooting 5 6 2 Error Codes When there is a problem within the N 3000 monitor an error code may be displayed on the front panel as illustrated SpO2 XQ min These codes correspond to messages that indicate what part of the monitor is at fault Actions to take when encountering error codes are listed below For a more thorough understanding of the error codes refer to Appendix A 5 6 2 1 User Correctable Error Codes Thefollowing error codes can be corrected by the operator Error Code Explanation 055 058 081 5 6 2 2 Failure Error Codes Current user input values limits volumes times have been
34. equals plus or minus 1SD which encompasses 6896 of the population 9 3 APPENDIX A1 A2 A3 A4 A5 A1 INTEGRITY TESTS Integrity Tests Error Types User Correctable Error Codes Failure Error Codes Internally Corrected Error Codes The N 3000 routinely performs internal system integrity tests to verify and monitor proper operation As a result error codes are recorded in the monitor internal Error Log and codes may be displayed on the monitor front panel display These error codes help establish a starting point for troubleshooting the N 3000 Failure error codes are produced by the N 3000 when one of the following automatic integrity tests detects an error POST Power On Self Test and Watchdog The POST verifies processor memory display speaker communications time sense device control logic and SpO2 hardware The watchdog circuit monitors the operational status of the processor Background Test Background tests are periodically run during normal operation and check the memory integrity processor operation and secondary lithium battery voltage Internal communication variables and parameters are checked for the appropriate values and timeliness Failure Error Detection A failure error may occur at any time The failure error detection process attempts to make an entry into the error log displays an error code sounds an alarm and places the instrument into a state including ceasing monitoring that minimizes the
35. level indicated in the PULSE RATE display to 255 While watching the RED indicator on the SRC 2 confirm the setting by pressing the UPPER ALARM LIMIT button The LED intensity should increase Rotate the knob to adjust the red LED drive level indicated in the PULSE RATE display to 0 Press the UPPER ALARM LIMIT button The RED indicator should turn off Rotate the knob to adjust the red LED drive level indicated in the PULSE RATE display to 170 Press the UPPER ALARM LIMIT button The RED indicator intensity should increase Press the LOWER ALARM LIMIT button to return to the service mode steady state Press the ON STANDBY button to turn the N 3000 off Section 3 Performance Verification PIEZO SPEAKER TEST The following test verifies that the piezo power loss alarm speaker sounds an alarm when the N 3000 loses power WARNING Before attempting to open or disassemble the N 3000 disconnect the power cord from the N 3000 Caution Observe E SD electrostatic discharge precautions when working within the unit 1 Ensure that the N 3000 is turned off 2 Disconnect the monitor from the SPS power supply 3 Set the N 3000 upside down facing you as shown in Figure 3 4 Battery cover lt gt 4 Squeeze Battery cover lt ieee Figure 3 4 Battery Cover Removal 4 Usinga small Phillips head screwdriver loosen the two battery cover retaining fasteners securing the battery compartment cover 5
36. menu number 0 through 5 and the PATIENT MOTION indicator is illuminated to indicate the monitor is in the configuration menu steady state Rotate the knob on top of the N 3000 to access the desired menu number Press the UPPER ALARM LIMIT button to configure the displayed item using the procedures listed in paragraphs 4 2 8 1 through 4 2 8 6 To exit the configuration menu steady state and return to the configuration mode steady state press the LOWER ALARM LIMIT button or if thereis no knob or button activity for 15 seconds you will automatically return to the configuration mode steady state Y ou may also exit by turning the monitor off 4 2 8 1 Pulse Tone Volume Menu item number 0 allows you to determine the default volume 1 through 10 for the pulse tone 1 From the configuration menu steady state rotate the knob until 0 is displayed in the SpO29 6 display Press the UPPER ALARM LIMIT button 2 The current default pulse tone volume setting is displayed in the PULSE RATE display An audio tone sounds at the current volume setting Rotate the knob CW or CCW to display the desired power on default volume level 1 through 10 3 Press the LOWER ALARM LIMIT BUTTON toreturn tothe configuration menu steady state 4 5 Section 4 Configuration Mode Service Mode and Alarm Active Function 4 2 8 2 4 2 8 3 4 2 8 4 4 2 8 5 46 UIF Software Version Report 1 From the configuration menu steady state rotate t
37. result in damage to or malfunction of the monitor Cautions are highlighted in boldface type A note gives information that requires special attention N 3000 PULSE OXIMETER DESCRIPTION The Nalcor Symphony N 3000 pulse oximeter is intended for continuous noninvasive monitoring of functional oxygen saturation and pulse rate for adult pediatric and neonatal patients in a hospital environment It may be used during hospital transport and in protected mobile environments such as ambulances and helicopters when powered by its internal battery and protected from excessive moisture such as direct exposure to rain TheN 3000 can operate as a standalone monitor or it can be connected to stacked with the N 3100 blood pressure monitor The physical and operational characteristics of the monitor are described in the operator s manual and Section 9 Specifications of this manual Figure 1 1 depicts the North American front panel of the N 3000 and the names of its displays and controls 1 1 Section 1 Introduction NELLEOR Symphony N 3po ran min ES 2 LI E m MM NEONATAL p RFLOCK LINKED M PULSE SEARCH LEADS OFF 20 19 18 1716 15 14 13 12 11 10 Figure 1 1 N 3000 Front Panel North American 1 Sp02 display 11 PRINT button 2 PULSE AMPLITUDE indicator 12 BATTERY IN USE BATTERY LOW indicator 3 ECG HEART RATE indicator
38. serial data interface are RS 232 and EIA 422 TheN 3000 is shipped with the RS 232 setting To change the settings refer to paragraph 6 5 1 Perform the following procedure to test the serial port voltages 1 Connect the monitor to an AC power source through the SPS power supply and turn the monitor on The serial port is functional only when the N 3000 is operated from an AC power source 2 Connect a 6 pin miniature connector adapter to the serial interface port 3 SetuptheDMM as follows Function VDC Range 10V 4 Connect the DMM negative lead to connector pin 4 GND 311 Section 3 Performance Verification 5 Connect the DMM positive lead to the following pins and verify the voltage values listed in Table 3 1 1 2 3 4 5 6 Serial Port Connector External Pin Locations Table 3 1 Serial Port Voltages Pin Line Voltage 4 GND 00 04 Alarm Active 0 0 0 4 or 3 3 0 4 Allows alarm activity to be monitored from a location away from the N 3000 refer to paragraph 4 4 Connections between the N 3000 serial port and an external PC are as indicated in Figure 3 3 2 1 6 ALARM ACTIVE Shield Shield connected to shell Figure 3 3 N 3000 to External PC Connections 3 4 SAFETY TESTS N 3000 safety tests consist of e Ground Integrity Electrical Leakage 3 12 3 4 1 Ground Integrity Section 3 Performance Verification This test verifies the integrity
39. square wave The frequency of CTRL CLK is controlled by an 8 bit number The bits of this number are split between two output ports The lower 5 bits of the number are programmed on the lower 5 bits of port C The upper 3 bits of the number are programmed on the upper 3 bits of port E The formula for the CTRL CLK frequency is frequency 25MHz 1 TIME where TIME is the 8 bit number output by the CPU TIME has a valid range of 1 255 The circuit provides an adjustment range of 19 531 kHz to 2 5 MHz TheCTRL CLK signal is input back to U1 Pin 16 During the POST routine this pin is used to monitor the programmable clock hardware output to verify performance f Intermodule Connector The SpO2 controller board is connected to the UIF board via the J 1 intermodule connector The UIF board provides power to the SpO2 controller Stackbus and module synchronization lines are also routed through J 1 Technical Supplement S4 2 4 Communications Submodule The communications submodule contains circuitry for allowing 1500V isolated asynchronous serial RS232 or RS422 communications between the N 3000 UIF module and a host computer a 1500V isolated nurse call signal that operates whenever an alarm condition exists or a 1500V isolated 3 3V power source for powering remote external serial equipment Signals that originate on the UIF board include UARTTXD Transmit data from UART UARTRXD Receive data to UART UARTDTR Data terminal ready from
40. the mother board then pulling the Display PCB away from the UIF PCB and disconnecting from J 5 Disconnect the control knob ribbon cable from J 3 on the UIF PCB Push the top of the connector down then pull the cable straight up and out of the connector Lift the UIF PCB out of the chassis housing When replacing the UIF PCB thelnstrument Identification label must be replaced Attach the label tothe enclosure on the bottom of the unit Reset the configuration code if required Confirm the number using the service mode menu item 17 6 9 Section 6 Disassembly Guide 6 10 CONTROL KNOB ASSEMBLY REPLACEMENT 1 Complete the procedurein paragraph 6 9 The top cover appears as illustrated in Figure 6 10 Heat shield Encoder assembly Top cover Figure 6 10 Knob Encoder Disassembly Turn the cover right side up as illustrated in Figure 6 11 and usea small flat blade to gently pry the knob off the shaft When removing the knob in this manner care must be taken not to nick and dent the surrounding top cover k ie Nut Metal washer Elastomeric washer Figure 6 11 Knob Disassembly 3 Using a 7 16 inch socket remove the nut securing the shaft and knob assembly to the chassis 6 10 4 Section 6 Disassembly Guide Replace the control knob assembly with the elastomeric washer closest to the plastic chassis Torque nut to 10 inch pounds Replace the heat shield and white plastic insulator as illust
41. the replacement PCB with the suspected malfunctioning PCB the original PCB that was installed when you started troubleshooting and continue troubleshooting as directed in this section OBTAINING REPLACEMENT PARTS Nellcor Puritan Bennett Technical Services provides technical assistance information and replacement parts To obtain replacement parts contact Nellcor Puritan Bennett or your local Nellcor Puritan Bennett representative Refer to parts by the part names and part numbers listed in Section 7 Spare Parts 51 Section 5 Troubleshooting 56 TROUBLESHOOTING GUIDE Problems with the N 3000 are separated into the categories indicated in Table 5 1 Refer to the paragraph indicated for further troubleshooting instructions Nate Taking the recommended actions discussed in this section will correct the majority of problems you will encounter However problems not covered here can be resolved by calling Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative Table 5 1 Problem Categories Problem Area Refer to Paragraph 1 Power 5 6 1 No power up on AC and or DC F ails power on self test Powers down without apparent cause 3 Buttons K nob 5 6 3 Monitor does not respond properly to buttons and or knob 4 Display Alarms Displays do not respond properly Alarms or other tones do not sound properly or are generated without apparent cause 6 Stacked Configuration e N 3000 op
42. through one half of U34 This controls the circuit pulse width which also maintains the isolated VCCI at 5 volts Components R68 R69 R70 C45 and CR8 detect the value of VCCI and increase the output of the optocoupler when it VCCI is over 5 volts Technical Supplement The transformer flyback pulse is rectified by CR7 and filtered by C12 C57 and R5 to create VCCI The other two transformer windings have three times as many turns as the VCCI winding These windings are rectified by CR5 and CR6 to achieve 15 volts during the flyback cycle These supplies are then regulated by U2 and U 15 to 12 volts Normal transformer signals are filtered out of the circuitry by C55 R110 CR2 Q3 R38 C14 Q6 R53 and R49 However the Q7 turn on transition is a direct result of the ANALOG CLK signal This creates the isolated dock signal ISO CLK and guarantees a consistent output pulse time independent of the pulse width modulation and inductive transient changes b Timing ThelSO CLK is divided by U 29 and decoded by U1 and U30 to create the timing signals used throughout the isolated section of the circuit The timing diagram Figure S4 2 shows the result of this decoding One complete cycle of the front end takes 16 ISO CLK cycles 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 oto 1 I FT T TF L Rar wd L 1 LT TL imsmpL 1141 1 LLLP 1L 2 fd reosmPL LLLI 7
43. using the Service Mode menu items 7 through 16 as indicated in Paragraph 4 3 Service M ode Table A 4 lists the internally corrected error codes in numerical order It is not normally necessary for service personnel to access the Error L og However if you find it necessary to contact Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative they may request information from the Error L og Table A 4 N 3000 Internally Corrected Error Codes Explanation General failure of UIF Generic POST UIF cannot allocate a resource ran out of a dynamic resource memory corruption during initialization or a logic error resulting from a low probability combination of events that did not appear in unit or validation testing UIF general watchdog reset UIF memory corruption UIF unexpected interrupt Appendix Table A 4 N 3000 Internally Corrected Error Codes Continued invalid bad values or low limit above high limit 287 SpO 2 detected failure of other system component UIF PCB UIF software or communication problem 288 SpO 2 module failure cannot determine whether SpO2 Controller PCB or SpO2 PCB A 5 TECHNICAL SUPPLEMENT S1 Introduction S2 Oximetry Overview S3 Stackbus Interconnect S4 Circuit Analysis S5 Schematic Diagrams S1 INTRODUCTION This Technical Supplement provides the reader with a discussion of oximetry principles and a more in depth discussion of N 300
44. 0 and above by other than qualified factory personnel may cause the N 3000 to malfunction Section 4 Configuration Mode Service Mode and Alarm Active Function 44 ALARM ACTIVE FUNCTION The N 3000 alarm active function allows low medium or high priority alarms to be monitored from a remote location via the N 3000 serial port Alarm monitoring also applies to an attached active N 3100 This function is automatically enabled during the power on cycle Pin 6 is open when no alarms are active Alarm activity results in pin 6 shorting to ground The pin will remain shorted to ground as long as the alarm is sounding 1 2 3 4 5 6 Figure 4 1 Serial Port Pin Locations If voltage levels of 7 volts on pin 1 are desired for remote alarm monitoring while in RS 232 mode short together the DSR pin 2 and TXD pin 3 lines of the communication cable Once the alarm active function has been enabled during power on an alarm will toggle the DTR line pin 1 from a logic LOW of 7 volts to a HIGH of 7 volts As long as the alarm is sounding this line will remain HIGH When the alarm is silenced or becomes inactive the line will return to its LOW logic level If a continuous 3 3 volt signal on pin 6 is desired as when using the Nellcor Puritan Bennet SOC 3 adapter change the dip switch settings on the Communications PCB as instructed in paragraph 6 5 1 4 23 SECTION 5 TROUBLESHOOTING 5 1 5 2 5 3 5 4 5 5 5 1 Intr
45. 0 circuits A functional overview and detailed circuit analysis are supported by block and schematic diagrams The schematic diagrams are located at the end of this supplement S2 OXIMETRY OVERVIEW Pulse oximetry is based on two principles e Oxyhemoglobin and deoxyhemoglobin differ in their absorption of red and infrared light spectrophotometry The volume of arterial blood in tissue and hence light absorption by that blood changes during the pulse plethysmography A pulse oxi meter determines SpO2 by passing red and infrared light into an arteriolar bed and measuring changes in light absorption during the pulsatile cycle Red and infrared low voltage light emitting diodes LEDS in the oximetry sensor serve as light sources a photodiode serves as the photo detector Because oxyhemoglobin and deoxyhemoglobin differ in light absorption the amount of red and infrared light absorbed by blood is related to hemoglobin oxygen saturation To identify the oxygen saturation of arterial hemoglobin the monitor uses the pulsatile nature of arterial flow During systole a new pulse of arterial blood enters the vascular bed and blood volume and light absorption increase During diastole blood volume and light absorption reach their lowest point The monitor bases its SpO2 measurements on the difference between maximum and minimum absorption that is measurements at systole and diastole By doing so it focuses on light absorption by puls
46. 1 Reset is held low until Vcc raises above 4 6 volts After Vcc is above 4 6 volts reset is tri stated and pulled high by R10 Note L1 L2 and L3 provide filtering for Vcc b Program Memory EPROM The program memory chi p U4 provides the SpO2 controller board with 128K bytes of memory This program boot ROM memory can be expanded up to 256K bytes The CSBOOT signal from U1 which is configured for 16 bit memory access provides the enable signal for U4 After system software comes on or is booted up CSBOOT is configured for a start address of 0 a block length of 256K bytes both read and write access and gated with AS This configuration provides a program memory range of 00000h through 3FFFF The number of wait states needed before the CSBOOT signal is generated depends upon the U1 clock speed and the speed at which U4 can successfully perform its functions With the N 3000 the number of wait states must be set to 1 based upon a CPU dock speed of 16 0 MHz maximum and the U4 access time of 150ns maximum Resistor R22 pulls the U4 OE signal stateto low during normal operation If this signal state is high the U4 output is disabled S 15 Technical Supplement S 16 C RAM Memory The U5 RAM chip provides the SpO2 Controller board with 128K bytes of memory The U1 CSO provides the chip enable signal for U3 The U3 hardware has an 8 bit wide data path After boot up CSO is configured as a chip select with a start addre
47. 104 and R105 turn the LEDs off between pulses e Differential Input Amplifier Input op amp U23 converts the differential current to a voltage One side of the output is coupled through capacitor C48 while the other output is used as a reference that is switched by U 24 onto R78 only during one channel on off cycle This AC couples only one channel Low frequency noise on the other channel is eliminated also since the LE D off output for both channels is the same This switched AC coupling removes the DC without resulting in channel crosstalk The resulting AC coupled signal and reference are switched through U25 to the input of differential amplifier U21 when the patient module is plugged in If the cable is plugged in U25 selects the output of the preamp and ground as the input to U21 AC coupling is performed to keep crosstalk from the preamped AC signal Differential amplifier U21 has a programmable gain of 1 4 16 or 64 depending upon the state of PDO and PD1 f Synchronous Demodulator and Gain If calibration is not selected the output of U21 is directed through U26 to filter U 27 to eliminate high frequency noise Amplifier U28 is either an inverting or noninverting amplifier depending on the state of switch U 26 U3 samples the output to demodulate the two channels This sample and hold is then amplified by U5 or U6 The gain is 1 or 16 depending upon the state of DM2 from the U 10 controller The other half of U5 or U6 dr
48. 13 BATTERY CHARGING indicator 4 PULSE RATE display 14 LINKED indicator 5 AUXILIARY display 15 RF LOCKED indicator 6 NEONATAL MODE indicator 16 LOWER ALARM LIMIT button 7 AUDIBLE ALARM OFF indicator 17 UPPER ALARM LIMIT button 8 ON STANDBY button 18 LEADS OFF indicator 9 POWER ON indicator 19 PULSE SEARCH indicator 10 STACKED indicator 20 PATIENT MOTION indicator Not used on this model 1 4 RELATED DOCUMENTS To perform test and troubleshooti ng procedures and to understand the principles of operation and circuit analysis sections of this manual you must know how to operate the monitor Refer to the N 3000 operator s manual To understand the various NdlIcor Puritan Bennet sensors that work with the monitor refer to the individual sensor directions for use SECTION 2 ROUTINE MAINTENANCE 2 1 2 2 2 3 CLEANING 2 4 Cleaning 22 Periodic Safety and Functional Checks 2 3 Batteries Caution Do not immerse the N 3000 or its accessories in liquid or use caustic or abrasive cleaners Do not spray or pour any liquid on the monitor or its accessories To dean the N 3000 dampen a cloth with a commercial nonabrasive cleaner and wipe the instrument exterior surfaces lightly Do not allow any liquids to come in contact with the power connector fuse holder or switches Do not allow any liquids to penetrate connectors or openings in the instrument cover Wipe sensor extension cables with a damp cloth For
49. 2 Controller PCB 6 7 Section 6 Disassembly Guide 6 8 REMOVING THE COMMUNICATIONS PCB 1 Complete the procedures in paragraph 6 6 and step 2 of paragraph 6 7 2 Using a 1 4 inch socket or needle nose pliers remove the Communications PCB by removing the four 1 4 inch nuts that secure it to the UIF PCB Figure 6 8 After removing the nuts lift straight up Communications PCB 1 4 inch nut Jumper J6 Top enclosure Figure 6 8 Communications PCB Removal 6 9 REMOVING THE UIF PCB AND DISPLAY PCB 1 Complete the procedures in paragraphs 6 7 and 6 8 2 Remove the right side panel by lifting it straight up 68 Section 6 Disassembly Guide Remove the front panel bezel by gently lifting it up and rotating it away from the Display PCB as illustrated in Figure 6 9 The display PCB is secured to the UIF PCB via theJ 5 connector To remove the Display PCB the UIF PCB must first be loosened to allow the Display PCB to be lifted out of the molded chassis housing slots J5 connector Piezo power loss alarm speaker Lithium backup battery UIF PCB J3 8 i Control knob ribbon cable Speaker boost lithium battery J3 connector Display PCB Front panel bezel Figure 6 9 Display PCB and UIF Board Disassembly Using a Phillips head screwdriver remove the six screws securing the UIF PCB tothe chassis Remove the Display PCB by lifting up on
50. DULATION switch to LOW verify that after a few seconds the monitor indications are within the tolerances listed in step 12 Turn the N 3000 off Disconnect the tester from the cable 39 Section 3 Performance Verification 3 3 5 Normal Operation The following tests are an overall performance check of the system e LED Excitation Test e Operation with a Live Subject e Serial Interface Test 3 3 5 1 LED Excitation Test This procedure uses normal system components to test circuit operation A Nellcor Puritan Bennett Oxisensor Il oxygen transducer model D 25 is used to examine LED intensity control The red LED is used to verify intensity modulation caused by the LED intensity control circuit 1 Connect the monitor to an AC power source through the SPS power supply Connect an SCP 10 sensor input cabletothe monitor Connect a D 25 sensor tothe sensor input cable Press the ON STANDBY button to turn the monitor on Leave the sensor open with the LEDs and photodetector visible o uu FF WN After the monitor completes its normal power up sequence verify that the sensor LED is brightly lit 7 Slowly movethe sensor LED in proximity to the photodetector element of the sensor Verify as the LED approaches the optical sensor that the LED intensity decreases 8 Openthesensor and notice that the LED intensity increases 9 Repeat step 7 and the intensity will again decrease This variation is an indication that the microproc
51. F MODE REM RCAL 63 If you are not already in the service mode enter the service mode steady state as instructed in paragraph 4 3 Select menu item 33 by rotating the knob until 33 appears in the SpO296 display Press the UPPER ALARM LIMIT button The SpO2 IR LED drive value 170 is displayed in the PULSE RATE display The IR indicator on the SRC 2 is illuminated 3 15 Section 3 Performance Verification 3 16 6 10 11 12 13 14 15 16 17 18 19 20 21 22 Rotate the knob to adjust the IR LED drive level indicated in the PULSE RATE display to 255 While watching the IR indicator on the SRC 2 confirm the setting by pressing the UPPER ALARM LIMIT button The LED intensity should increase Rotate the knob to adjust the IR LED drive level indicated in the PULSE RATE display to 0 Press the UPPER ALARM LIMIT button The IR LED should turn off Rotate the knob to adjust the IR LED drive level indicated in the PULSE RATE display to 170 Press the UPPER ALARM LIMIT button The IR LED intensity should increase Press the LOWER ALARM LIMIT button to return to the service mode steady state Select menu item 34 by rotating the knob until 34 appears in the SpO 2 display Press the UPPER ALARM LIMIT button The SpO2 red LED drive value 170 is displayed in the PULSE RATE display The IR indicator on the SRC 2 is illuminated Rotate the knob to adjust the red LED drive
52. FF button for 3 seconds or less The current default setting for the alarm silence duration appears in the PULSE RATE display The SpO 2 display indicates CFG while the AUXILIARY display indicates SEC seconds Note Pressing the AUDIBLE ALARM OFF button for more than 3 seconds without turning the knob causes the N 3000 to enter the Default Alarm Volume mode as described in paragraph 4 2 6 Use the control knob on the top of the N 3000 to adjust the default alarm silence duration Alarm silence duration choices are 30 SEC 60 SEC 90 SEC and 120 SEC Section 4 Configuration Mode Service Mode and Alarm Active Function 4 2 8 Configuration Menu The configuration menu allows you to configure the functions listed in Table 4 2 After accessing a menu item by pressing the UPPER ALARM LIMIT button if the knob is not turned and no button is pressed for a period of time equal to the timeout as listed in the table you will automatically return to the configuration menu steady state The last setting displayed for the menu item will become the default setting Table 4 2 Configuration Menu Paragraph Configurable Setting Described Timeout lO Pulse tone volume 4 2 8 1 UIF software version report 4 2 8 2 i Trendtype 4285 asend To access the configuration menu from the configuration mode steady state press the UPPER and LOWER ALARM LIMIT buttons simultaneously The SpO 296 display indicates the
53. Gently squeeze the battery cover sides in the middle as you swing the cover open it is hinged on the right with three tabs that extend into slots on the chassis 6 Lift the battery out of the compartment as shown in Figure 3 5 It may be necessary to use the edge of a flat tip screwdriver to gently pry the battery loose 317 Section 3 Performance Verification 3 18 10 11 Battery cover Battery Power connector Battery bracket Figure 3 5 Speaker Test Turn the monitor on by pressing the ON STANDBY button When the power on self test is complete disconnect the power connector from the battery Verify that a shrill beeping alarm is emitted from the speaker If no alarm sounds check the functionality of the lithium backup battery as indicated in paragraph 4 3 9 menu item 18 2 of the service mode The battery should measure approximately 3 volts If the battery is good replace the UIF PCB as indicated in paragraph 6 8 Reconnect the power connector to the battery Thealarm is silenced and the monitor powers back on Turn the monitor off by pressing the ON STANDBY button Replace the battery in the battery bracket and reconnect the battery cover SECTION 4 CONFIGURATION MODE SERVICE MODE AND ALARM ACTIVE FUNCTION 41 Introduction 4 2 Configuration Mode 43 Service Mode 4 4 Alarm Active Function 4 1 INTRODUCTION This section discusses use of the configuration mode to recon
54. IBLE ALARM OFF button on the top of the monitor Verify the following a OFF is displayed for approximately 3 seconds b After 3 seconds a steady tone is heard at the default alarm volume setting the PULSE RATE display indicates VOL and the AUXILIARY display indicates the current default setting While continuing to hold the AUDIBLE ALARM OFF button rotatethe control knob CCW to decrease the alarm volume setting to a minimum value of 1 Thealarm tone should still be audible Rotate the control knob CW to increase the alarm volume setting to a maximum value of 10 Rotate the knob until a comfortable audio level is attained Release the AUDIBLE ALARM OFF button The tone will stop 3 3 4 4 Pulse Tone Volume Control L Rotate the control knob CW and verify that the beeping pulse tone sound level increases Rotate the control knob CCW and verify that the beeping pulse tone can be turned off completely Rotate the knob CW until a comfortable audio level is attained 3 3 4 5 Dynamic Operating Range 38 The following test sequence will verify proper monitor operation over a wide range of input signals Note TheN 3000 pulse qualification may occasionally reject some pulses from the SRC 2 pulse oximeter tester This is indicated by the missing audible pulse tone and the illuminated PATIENT MOTION indicator Verify that the monitor is still displaying saturation and that pulse information is in compliance with the
55. IF and Display PCB 6 10 Control Knob Assembly Replacement 6 11 Lithium Battery Replacement 6 12 Reassembly 6 1 INTRODUCTION The N 3000 can be disassembled down to all major component parts induding PCBs batteries cables function buttons chassis enclosures The following tools are required small Phillips head screwdriver medium Phillips head screwdriver needle nose pliers or 1 4 inch socket 7 16 inch socket 7 16 inch torque wrench 10 inch pounds required only when replacing knob WARNING Before attempting to open or disassemble the N 3000 disconnect the power cord from the N 3000 Caution Observe E SD electrostatic discharge precautions when working within the unit Caution Remove the battery before disassembling the unit Note Some spare parts have a business reply card attached When you receive these spare parts please fill out and return the card 62 REMOVING THE BATTERY Caution If it is necessary to apply AC power while the battery cover is removed do not connect the SPS power supply to the monitor while the power supply is plugged into AC power Instead first connect the power supply to the monitor then connect the power supply to AC power Misalignment of the power supply cord connector with the lower docking connector may result in damage to the monitor This caution does not apply when the battery cover is attached to the N 3000 6 1 Section 6 Disassembly Guide Perform the
56. Ms by calling Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative Turn the monitor off then on again If theerror code still appears power down the monitor and replace the SpO2 Controller PCB Turn the monitor off then on again If theerror code still appears power down the monitor and replace the SpO2 PCB If the error code still appears power down the monitor and replace the SpO2 Controller PCB Turn the monitor off then on again If theerror code still appears power down and verify that the SpO2 Controller PCB is securely seated If the error code still appears replace the SpO2 Controller PCB If the error code still appears power down the monitor and replacethe UIF PCB Section 5 Troubleshooting 5 6 3 Buttons Knob Table 5 4 lists symptoms of problems relating to nonresponsive buttons or the Nelcor Puritan Bennet knob and recommended actions If the action requires replacement of a PCB refer to Section 6 Disassembly Guide Table 5 4 Buttons Knob Problems Condition Recommended Action The N 3000 turns on If possible verify the problem with the service but does not respond mode menu item 2 knob and lamp test tothe knob buttons are operational Verify proper connection between knob and UIF PCB If the condition still persists replace the UIF PCB TheN 3000 responds Verify the problem and identify faulty butto
57. OWER ALARM LIMIT and PRINT buttons while the monitor performs the power on self test 3 When SEr begins flashing in the AUXILIARY display release the UPPER and LOWER ALARM LIMIT and PRINT buttons 4 7 Section 4 Configuration Mode Service Mode and Alarm Active Function 48 4 Press the PRINT button You must press this button within 15 seconds or the monitor will turn off automatically You are now in service mode steady state Note Failure errors refer to Troubleshooting section for an explanation of failure errors and error codes may be encountered by the N 3000 upon entering the service mode The N 3000 will automatically access the menu item used to correct this situation If a user correctable error code a code beginning with 0 is displayed while in the service mode press the LOWER ALARM LIMIT button to dear theerror e SEr stops flashing and is continuously displayed e Thenumber 1 is indicated in the Sp02 display e ThePATIENT MOTION indicator is lit indicating that you are in the service mode steady state with access to the main menu as indicated in Table 4 3 MOTION Use the knob to move from one main menu item to the next While in service mode the UPPER and LOWER ALARM LIMIT buttons are used as enter and exit buttons respectively You must press the UPPER ALARM LIMIT button to select a main menu item and move to the submenu level When you have scrolled to the desired menu item press
58. PCB ROM U3 is securely seated in its socket Turn the monitor on again If the error code still appears power down the monitor and replacethe UIF PCB 108 109 111 178 1 Turn the monitor off then on again If the error code still appears power down the monitor and replacethe UIF PCB 110 Turn the monitor off then on again Useservice mode menu item number 18 to evaluate the status of the lithium backup battery If necessary power down the monitor and replace the lithium backup battery If the error code still appears power down the monitor and replacethe UIF PCB 151 175 176 Turn the monitor off then on again If the error code still appears power down the monitor and verify that the SpO2 Module ROM is securely seated in the socket Verify that the SpO2 Controller PCB is securely seated Turn the monitor on If the error code still appears replace the SpO2 Controller PCB If the error code still appears power down the monitor and replacethe UIF PCB 159 Usethe service mode menu item 20 to reset the default values to factory default values as discussed in Section 4 Configuration and Service Modes If the error code still appears power down the monitor and replacethe UIF PCB If the error code still appears power down the monitor and replace the SpO2 Controller PCB 77 1 Turn the monitor off then on again If the error code still appears and the N 3000 is stacked with a
59. Stackbus Adaptor External Stackbus UIF Board nem aes ocking ackKe Connector Instruments Figure S4 3 Internal External Stackbus Connections d Processor Support ICs The processor support Cs are used to monitor the processor and its power supply resetting U3 when necessary and to sound an alarm using piezo speaker Y 1 when the processor appears to be inoperative or when the unit has had an unexpected power loss The processor support Cs are watchdog timer U21 and the processor power fail circuitry consisting of U 16 U1 U2 U 11 U22 and U29 Watchdog Timer Timer U21 ensures that processor U 3 does not operate and switches the backup battery power from U 20 to the RAM PWR supply when the 5 volt supply is below its lower regulation limit This chip holds U3 in reset until the power supply is above its lower regulation limit The watchdog timer also resets the processor if the processor input signal CLRWD is not toggled within a timeout period controlled by the watchdog oscillator circuitry When the watchdog times out it generates a signal that causes the piezo power loss alarm speaker to emit a tone The timeout also causes the display to go blank and generates a reset to U3 Thetone continues until the watchdog is cleared due to activity on the CLRWD signal line pressing the ALARM SILENCE button removing power from the circuit Technical Supplement S 12 Timer U21 also switches the backup
60. Table S4 1 J13 Inter Stack Connector PinNo Pin Description ipuroutputPower Positive battery terminal fused Chassis case ground io s Dgmigomd Pe s harge bus 15V s Tromso mw When the N3000 is on and the ON STANDBY button is pressed the BQ2001 signals the processor via interrupt that there is data for the processor to read When the processor reads the status it determines that the unit should be turned off and signals the BQ2001 to disable Q10 Other sources of interrupt from the BQ2001 are a low voltage from lithium battery BT1 the application or removal of CHARGEBUS power and the lead acid battery voltage falling below a threshold preset by the processor When the SPS power supply is connected to the lower docking connector and connected to AC CHARGEBUS has a voltage of 15V 0 75V This powers the battery charge overcurrent and overtemperature circuitry The BQ2001 controls battery charging When the processor senses that the battery needs charging it tells the BQ2001 to turn on transistor Q5 for a programmed length of time The BQ2001 will continue charging the battery as long as there is CHARGEBUS available and its internal charge time register has not expired regardless of the mode of the N 3000 unless it is told to stop by the processor or it senses that the over temperature circuit has tripped The battery charging circuitry is a constant voltage charger When the
61. UART UARTDSR Data set ready to UART ALARMACTIVE Prog I O from UART Shutdown Prog I O from UART Connector J 5 contains the signals for communicating with the UIF board J 8 as detailed in Table S4 2 Thereis an auxiliary connector J 2 on the communications PCB for future expansion a Serial Communications Serial communications are available only when the SPS power supply is connected to the N 3000 docking connector and plugged into an AC outlet When the UIF processor detects that CHARGE BUS is available it enables isolation transformer driver U 1 MAX253 This creates power for circuitry on the isolated host computer side of the module Transmit and Receive data cross the barrier through optical isolators U5 and U3 6N136 CTS and RTS signals cross the barrier through optical isolators U4 and U2 4N 26 Isolation transformer Transmit data Data terminal ready Data terminal set Request to send Signals from UIF module Alarm Active 16 pin connector 6 pin DIN connector Five volts Optocouplers Shut down Isolation barrier ALARM ACTIVE 1500 volts Maximum baud rate 19 2K Figure S4 4 Communications Submodule Block Diagram Technical Supplement S 18 Selecting RS232 serial signaling is accomplished by moving switches S1 S3 S5 S7 on SW1 and SW2 to the on position and switches S2 S4 S6 S8 to the OFF position This enables U9 and disables U 10 With RS232 sel
62. and 6 ON SW2 Positions 2 4 and 6 OFF Positions 1 3 5 and 7 ON SW3 Position 1 ON Position 2 3 and 4 OFF 66 REMOVING THE ALARM SPEAKER 1 Complete the procedurein paragraph 6 5 2 Remove the handle and spring assembly on the right side of the unit as illustrated in Figure 6 6 lifting it up out of the molded chassis cradle Spring Left side panel Alarm speaker Piezo power loss alarm speaker Figure 6 6 Handle Left Side Panel and Speaker Disassembly 3 Remove the left side panel this is on your right as illustrated above by pulling straight up be careful not to damage speakers 4 Removethe alarm speaker cable by lifting up from connector J 2 on the UIF PCB 6 6 Section 6 Disassembly Guide 67 REMOVING THE SPO2 PCB AND SPO2 CONTROLLER PCB 1 Complete the procedure in paragraph 6 5 2 Removethe rear panel rear panel insulator and NEW PATIENT NEONATAL button by lifting up and rotating out of the chassis channel guides as illustrated in Figure 6 7 Rear panel Rear panel insulator SpO2 PCB SpO2 controller PCB Pemm stud Figure 6 7 Rear Panel and SpO2 Module Disassembly 3 Remove the SpO2 PCB and the SpO2 Controller PCB by disconnecting them from the Pemm studs on the UIF PCB Pull up on the top board from the right side to disconnect from the Pemm studs 4 Toremove the SpO2 PCB from the SpO2 Controller PCB unsnap the SpO2 PCB from the Pemm studs on the SpO
63. ars in the SpO29 display Press the UPPER ALARM LIMIT button The number 18 0 appears in the SpO296 display The number shown in the PULSE RATE display is the lead acid battery voltage to the nearest tenth of a volt Rotate the control knob CW until 18 1 appears in the Sp02 display The number shown in the PULSE RATE display is the charge bus voltage to the nearest tenth of a volt Rotate the control knob CW until 18 2 appears in the Sp02 display The number shown in the PULSE RATE display is the backup lithium battery voltage to the nearest tenth of a volt Note The control knob can be rotated until 18 3 appears in the SpO 296 display However the number shown in the PULSE RATE display has no meaning and can be ignored Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 13 Section 4 Configuration Mode Service Mode and Alarm Active Function 4 3 10 Menu Item 19 Persistent Time Sense Report This report allows you to determine if the internal persistent time circuit is keeping time correctly 1 From the service mode steady state select menu item 19 by rotating the knob until 19 appears in the SpO2 display Press the UPPER ALARM LIMIT button The persistent time in seconds is displayed in the SpO296 and PULSE RATE displays For example 001 688 indicates that the monitor has been powered on for 1 688 seconds 28 minutes 8 seconds Make a note of the displayed time If t
64. atile arterial blood eliminating the effects of nonpulsatile absorbers such as tissue bone and venous blood S2 1 Automatic Calibration Because light absorption by hemoglobin is wavelength dependent and because the mean wavelength of LED s varies an oximeter must know the mean wavelength of the sensor s red LED to accurately measure SpO 2 During manufacturing a resistor in the sensor encodes the mean wavelength of the red LED During monitoring the instrument s software reads this resistor and selects coefficients that are appropriate for the wavelength of that sensor s red LED these coefficients are then used to determine SpO 2 This resistor is read when the monitor is turned on periodically thereafter and each time a new sensor is connected Additionally to compensate for differences in tissue thickness the intensity of the sensor s LEDs is adjusted automatically S 1 Technical Supplement 2 2 Functional Versus Fractional Saturation This monitor measures functional saturation oxygenated hemoglobin expressed as a percentage of the hemoglobin that can transport oxygen It does not detect significant amounts of dysfunctional hemoglobin such as carboxyhemoglobin or methemoglobin In contrast hemoximeters such as the IL482 report fractional saturation oxygenated hemoglobin expressed as a percentage of all measured hemoglobin including measured dysfunctional hemoglobins To compare functional saturation measurements to th
65. ay will flash Pressing the UPPER ALARM LIMIT button will set the displayed value in the SpO2 module which will cease its automatic operation The PULSE RATE display will stop flashing Press and hold the PRINT button to display the SpO2 corrected I R and red output signals as described in menu item 32 Releasethe PRINT button Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 25 Menu Item 37 Set SpO2 Analog Test Mode This function allows you to validate sensors and or the operation of the SpO2 module 1 2 Connect the sensor to the N 3000 From the service mode steady state select menu item 37 by rotating the knob until 37 appears in the SpO29 display Press the UPPER ALARM LIMIT button The test mode setting of O normal operation is displayed in the PULSE RATE display SEr is displayed in the AUXILIARY display and 37 is displayed in the SpO 2 digital display Rotate the knob to select other settings Zero setting system test setting 1 2 2 If the displayed value is different from the current SpO2 value the display will flash Pressing the UPPER ALARM LIMIT button will set the displayed value in the SpO2 module which will cease its automatic operation Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 26 Menu Item 38 SpO2 A D Cal Line Test 4 20 This function allows you to verify calibration of t
66. battery is discharged its output voltage is low about 10V and the maximum charge rate approximately 350mA is applied to it As the battery charges its output voltage rises reducing the amount of current delivered to it by CHARGEBUS When the battery is fully charged about 14V the charge rate decreases to 0 mA The over temperature cutoff circuitry is physically located dose to the power transistor used to charge the battery by the BQ2001 When the area around thetransistor approaches 70 C the circuit will signal the BQ2001 to stop charging When the transistor cools charging is resumed To protect the battery a thermal cutoff switch is located on the docking connector dose to the lead acid battery compartment When the temperature in the battery compartment approaches 50 C the switch opens to prevent damage to the lead acid battery Technical Supplement b Processor The processor for the UIF PCB is U3 a Motorola MC68331 IC This processor uses a 32 bit CPU and contains several submodules including pulse width modulators internal RAM and a Queued Serial Module QSM The processor also contains a non multiplexed data address bus and input output timer pins The processor generates chip selects address lines data direction and data strobes for communicating with its peripherals over its bidirectional 16 bit data bus D15 through DO The chip select outputs are CSBOOT and CSO through CS8 The address lines are AO throu
67. being supplied from transistor Q10 to the SpO2 module and 5V regulator chips U17 and U 18 The chip select for U5 is processor pin CS7 The selection of analog voltages to read is controlled by processor outputs PWMA and PWMB which must be set up prior to accessing U 27 Technical Supplement Stackbus Adapter Adapter U14 is an FPGA field programmable gate array used by the processor to control the hub functions for both the internal and external stackbus It also decodes the knob movement as well as providing a 32 679kHz source clock It is an 8 bit memory mapped peripheral connected to the upper 8 bits D15 through D8 of the processor data bus The internal stackbus provides the communications for the UIF module and the SpO 2 module The external stackbus is used to communicate with other instruments when the unit is used in the stack configuration The chip select for U14 is processor pin CS3 Universal Asynchronous Receiver Transmitter UART U24 is an industry standard 16C550 It is an 8 bit memory mapped peripheral connected to the upper 8 bits D15 through D8 of the processor data bus It contains two 8 byte FIFOs one for transmit and one for receive a baud rate generator and several programmable I Os for enabling isolated power on the communications module serial communication handshaking and alarm active signaling The chip select for U24 is processor Pin CS6 SpO2 Module U8 i4 Communi cationbus Internal
68. e overview of the N 3000 modular design as well as a circuit description S4 Functional Overview The monitor functional block diagram is shown in Figure S4 1 Central tothe PCB modules is the UIF module This module receives power from an external AC source or battery via the docking connector It supplies power to the other modules connected to it while also communicating with them via the stackbus It controls user interface and network gateway functions Connected to the UIF module is the SpO2 module which consists of two PCBs the SpO2 Controller and the SpO2 PCB The SpO2 Controller board contains the micro controller memory system internal stackbus interface and other control logic The SpO2 PCB contains all the analog signal conditioning and control hardware necessary to measure SpO2 The two boards are electrically connected by a single interface connector The Communications module allows messages to be sent to a host computer using asynchronous serial communications All communications signals on the Communications module originate from the UIF module The Display module contains annunciators and push buttons allowing the user to access information and to select various available parameters The Display PCB contains SpO2 and heart rate LEDs and their associated driver circuits Front panel switches also allow the user to turn the unit on and off toset alarm limits and to print data The Display PCB is connected tothe UIF modu
69. ected J 1 has the following pinout DTR DSR TXD GND RXD Nurse Call 3 3V oar OUN Selecting RS422 serial signaling is accomplished by moving switches S2 S4 S6 S8 on SW1 and SW2 to the on position and switches 1 S3 S5 S7 to the OFF position This enables U10 and disables U9 With RS422 selected J 1 has the following pinout TXD RXD TXD GND RXD Nurse Call 3 3V oar OUN b Alarm Active 3 3V Power Isolated alarm active or 3 3 volt power is selectable as a 500mA fused output on J 1 Pin 6 Placing switch block SW3 S1 to the on position and S2 S3 S4 to the OFF position will select the alarm active signal on J 1 Pin 6 The alarm active signal provided is a normally open relay that shorts Pin 6 J 1 toPin 4 J 1 signaling an alarm event To select isolated 3 3 volt power place switch SW3 S1 to the OFF position and S2 53 S4 tothe on position This provides up to 100mA of 3 3 volt power 4 2 5 Display Board Technical Supplement The N 3000 display board is the assembly that contains the front panel display for the monitor The display board is connected to and controlled by theUIF module The display board block diagram is shown in Figure S4 5 4 Heart Pulse Rate o o Display Driver Synchronous Serial Interface o Respiration Indicators Motion Pulse Search Plethysmograph Alarm Silence Stacked
70. erates properly when used alone but not when stacked 7 Serial Port e N 3000 and PC not communicating properly 5 Operational Performance 5 6 5 Displays appear to be operational but monitor shows no readings Suspect readings All of the categories in Table 5 1 are discussed in the following paragraphs 52 5 6 1 Power Section 5 Troubleshooting Power problems are related to AC and or DC Table 5 2 lists recommended actions to power problems Table 5 2 Power Problems Recommended Action 1 Ensurethat the SPS power supply is plugged into Condition 1 BATTERY IN USE BATTERY LOW indicator lights steadily while N 3000 is connected to AC via the external power supply The N 3000 does not operate when disconnected from its external power supply or the power failure alarm sounds when AC power is disconnected BATTERY IN USE BATTERY LOW indicator flashes during DC operation The microproces sor failure alarm sounds and no error code is displayed an operational AC outlet If it is and the green indicator light is not lit replace the power supply If the green SPS indicator is lit ensure that the power supply is properly plugged into the N 3000 Check the fuse The fuse is located on the lower docking connector as indicated in paragraph 6 3 and Figure 6 3 of the Disassembly Guide section Replace if necessary Check the ribbon connection from the bottom
71. ervices to obtain a shipping carton Prior to shipping the monitor contact your supplier or the local Nellcor Puritan Bennett office Technical Services Department for a returned goods authorization number Mark the shipping carton and any shipping documents with the returned goods authorization number 8 2 REPACKING IN ORIGINAL CARTON If available usethe original carton and packing materials Pack the monitor as follows 1 Placethe monitor and if necessary accessory items in original packaging Figure 8 1 Repacking the N 3000 2 Placein shipping carton and seal carton with packaging tape amp 1 Section 8 Packing for Shipment 8 3 62 3 Label carton with shipping address return address and RGA number if applicable REPACKING IN A DIFFERENT CARTON If the original carton is not available 1 2 Place the monitor in a plastic bag Locate a corrugated cardboard shipping carton with at least 200 pounds per square inch psi bursting strength Fill the bottom of the carton with at least 2 inches of packing material Place the bagged unit on the layer of packing material and fill the box completely with packing material Seal the carton with packing tape Label the carton with the shipping address return address and RGA number if applicable SECTION 9 SPECIFICATIONS 9 1 9 2 GENERAL ELECTRICAL 9 4 General 9 2 Electrical 9 3 Physical Characteristics 9 4 Environmental 9 5
72. essor is in proper control of LED intensity 10 Turn the N 3000 off 3 3 5 2 Operation with a Live Subject 3 10 Patient monitoring involves connecting the monitor to a live subject for a qualitative test 1 Connect the N 3000 to an AC power source 2 Connect an SCP 10 sensor input cable to the monitor 3 Connect a Nelcor Puritan Bennett Durasensor oxygen transducer model DS 100A to the sensor input cable 4 Clip the DS 100A to the subject as recommended in the sensor directions for use 5 Press the ON STANDBY button to turn the monitor on 6 Themonitor should stabilize on the subject s physiological signal in about 10 to 15 seconds Verify that the saturation and pulse rates are reasonable for the subject Section 3 Performance Verification 3 3 5 3 Serial Interface Test The communications submodule of the N 3000 using an asynchronous EIA 232 communications format allows communications between the N 3000 and a PC via the 6 pin connector on the rear panel of the N 3000 as illustrated in Figure 3 2 An EIA 232 cable and detailed directions for use are available by contacting your local Nellcor Puritan Bennett representative IA TI HA m TIR Figure 3 2 Serial Port Interface The serial port can also be used to provide remote monitoring of alarms when configured as explained in paragraph 4 4 Alarm Active Function The two configurable options of
73. fi gure power on default values the service mode to identify and correct monitor difficulties and the alarm active function 42 CONFIGURATION MODE The following paragraphs describe how to enter the N 3000 configuration mode and change factory power on default settings TheN 3000 cannot enter the configuration mode whileit is stacked unless the N 3100 is in the configuration mode or is turned off If both instruments arein the configuration mode the N 3000 knob may be used to scroll to the desired menu item and adjust the settings of the N 3100 Usethe following procedure to enter configuration mode 1 Ifthe monitor is on turn it off 2 While simultaneously pressing both UPPER and LOWER ALARM LIMIT buttons turn the monitor on Continue to press both buttons until CFG begins flashing in the AUXILIARY display 3 Releasethe UPPER and LOWER ALARM LIMIT buttons 4 Pressthe PRINT button CFG stops flashing and remains displayed in the AUXILIARY display If the PRINT button is not pressed within 15 seconds after CF G begins flashing the monitor will turn off automatically You are now in configuration mode steady state The N 3000 automatically powers down if no action is taken for approximately 2 minutes After changing or viewing a default setting you can return tothe configuration mode steady state by allowing the display to timeout 3 seconds To exit the configuration mode turn the monitor off by pressin
74. fl NELLCOR PURITAN BENNETT SERVICE MANUAL Nellcor Symphony N 3000 Pulse Oximeter To contact Nellcor Puritan Bennett s representative In the United States call 1 800 NELLCOR or 510 463 4000 outside the United States call your local Nellcor Puritan Bennett representative 0123 Caution Federal law U S restricts this device to sale by or on the order of a physician 1996 Nellcor Puritan Bennett Incorporated All rights reserved 034129A 0296 Corporate Headquarters Nellcor Puritan Bennett I nc 4280 Hacienda Drive Pleasanton California 94588 U S A Tel 510 463 4000 or 1 800 NELLCOR Fax 510 463 4420 U S Service Repair Center Nellcor Puritan Bennett I nc 2391 Fenton Street Chula Vista California 91914 U S A Tel 619 482 5000 European Office Nellcor Puritan Bennett Europe BV Hambakenwetering 1 5231 DD s H ertogenbosch The Netherlands Tel 31 73 6485200 Asia Pacific Office Nellcor Puritan Bennett HK Ltd Room 1602 E vergo H ouse 38 Gloucester Road Wanchai Hong Kong Tel 852 2529 0363 Regional Local Offices Nellcor Puritan Bennett UK Ltd 10 Talisman Business Centre London Road Bicester Oxfordshire OX6 0J X United Kingdom Tel 444 1869 322700 Nellcor Puritan Bennett Belgium NV SA Interleuvenlaan 62 8 Zone 2 B 3001 H everlee Belgium Tel 32 16 400467 Nellcor Puritan Bennett France Sarl 21 rue Albert Calmette 78353 J ouy en J osas Cedex France Tel
75. following steps to replace the battery 1 Turn the N 3000 OFF by pressing the ON STANDBY button 2 Disconnect the monitor from the SPS power supply 3 Set the N 3000 upside down facing you as shown in Figure 6 1 Battery cover eA lt l Squeeze Battery cover C D a Figure 6 1 Battery Replacement 4 Loosen the two battery cover retaining fasteners securing the battery compartment cover 5 Gently squeeze the battery cover sides in the middle as you swing the cover open it is hinged on the right with three tabs that extend into slots on the chassis 6 Lift the battery out of the battery bracket as shown in Figure 6 2 It may be necessary to use the edge of a flat tip screwdriver to gently pry the battery loose 6 2 7 Section 6 Disassembly Guide Battery cover Battery Power connector Battery bracket Figure 6 2 Removing the Battery Disconnect the power connector from the battery 63 BATTERY REPLACEMENT 1 2 Complete the procedure in paragraph 6 2 The lead acid battery is recyclable Do not dispose of battery by placing it in the regular trash Dispose of properly or return to Nellcor Puritan Bennett Technical Services for disposal Connect the power connector to the new battery The connector can only be mated one way Position the battery into the battery bracket Replace the battery cover and tighten the retaining fasteners Turn the monitor on a
76. g the ON STANDBY button Default settings take place when the monitor is turned off Default settings also take place if the N 3000 powers down due to the 2 minute timeout 41 Section 4 Configuration Mode Service Mode and Alarm Active Function Note While changing default limits there must be some user interaction with the monitor within a 3 second period or the monitor will return to configuration mode steady state operation Table 4 1 lists the default settings that can be configured and the respective entry procedures to access the settings M ethods used to change the default settings are detailed in paragraphs 4 2 1 through 4 2 8 Table 4 1 Configuration Mode Menu Power on Default Button Press Procedure from Paragraph Setting Configuration Mode Steady State Described Adult N eonatal M ode NEW PATIENT NEONATAL button twice SpO2 Upper Alarm Limit UPPER ALARM LIMIT button SpO2 Lower Alarm Limit LOWER ALARM LIMIT button Pulse Rate Upper Alarm UPPER ALARM LIMIT button twice Limit Pulse Rate Lower Alarm LOWER ALARM LIMIT button twice Limit Alarm Volume ALARM SILENCE button press and 4 2 6 hold for 3 seconds before turning knob Alarm Silence Duration ALARM SILENCE button press and 4 2 7 hold turn knob within 3 seconds Configuration Menu UPPER LOWER ALARM LIMIT 4 2 buttons simultaneously Note Tochange neonate default limits enter the neonatal mode from configuration mode steady state by pres
77. gh A18 The data direction is generated by U3 on R W The data strobe for indicating valid data is generated on DS Using these control lines the processor is capable of reading from or writing to any of the peripherals attached to its data bus Data transfers are either 16 bit D15 through DO or 8 bit D15 through D8 A 32 679 kHz source clock signal for the processor is produced by stackbus adapter U 14 from crystal Y 3 System clock frequency is chosen by software C Processor Peripheral ICs Processor U3 uses serial and parallel peripheral ICs Theserial peripheral ICs communicate with the processor through the 68331 Queued Serial Module QSM TheselCs are the Real Time Clock RTC the Electrically Erasable Read Only Memory EEROM and the display controllers located on the Display PCB The parallel peripheral ICs communicate with the processor through a non multiplexed data bus The ICs are processor code PROM U 10 processor RAMs U 13 and U23 Arcnet communications IC U6 digital to analog converter U5 analog to digital converter U 27 stackbus adapter U 14 BQ2001 power management chip U 20 and UART Universal Asynchronous Receiver Transmitter U 24 Real Time Clock The dock is a continuously running IC used by the processor to maintain time and date information When the N 3000 is not on the RTC is maintained by lithium backup battery BT1 Electrically Erasable Read Only Memory The EEROM is used by the processor t
78. has been stored for more than 30 days charge the battery as described in paragraph 3 3 2 A fully discharged battery requires a 14 hour charge for a full charge A 6 hour charge is required for 1 hour of operating time 3 1 Introduction 3 2 Equipment Needed 3 8 Performance Tests 3 4 Safety Tests 3 5 SpO2 Tests 3 6 Piezo Speaker Test INTRODUCTION SECTION 3 PERFORMANCE VERIFICATION This section discusses the tests used to verify performance following troubleshooting and repairs All tests are accomplished through the control panel EQUIPMENT NEEDED Equipment AC Power Adapter Safety Analyzer Sensor Cable Digital Multimeter DMM Durasensor Oxygen Transducer Serial Interface Cable Connector Adapter Oxisensor I Oxygen Transducer Pulse Oximeter Tester PERFORMANCE TESTS Description Ndlcor Puritan Bennett model SPS N or SPS N1 Must meet current AAMI specifications SCP 10 Fluke Model 87 or equivalent DS 100A El A 232 cable optional 6 pin miniature D 25 SRC 2 Note Thebattery operation and battery charge tests should be performed before monitor repairs whenever the battery is suspected of being a source of the problems All other tests should be performed following monitor repairs Before performing the battery operation test ensure that the battery is fully charged Paragraph 3 3 2 3 3 1 Battery Operation Test The monitor is specified to operate on battery power a minimum of 4 hours
79. he indicator goes out An illuminated BATTERY CHARGING indicator is not necessarily an indication that the battery contains less than a full charge It is merely used as a timer to indicate that the battery has been continuously charging for less than 14 hours If unsure whether the battery is functioning properly perform the procedure in Paragraph 3 3 1 Battery Operation Test Repeat this procedure 3 3 2 Battery Charge through step 3 before returning the monitor to service 32 Section 3 Performance Verification 3 3 8 Power up Tests The power up tests 3 3 3 1 through 3 3 3 3 verify the following monitor functions 3 3 3 1 Power On Self Test 1 Power On Self Test Adult Power On Defaults and Alarm Limit Ranges Neonate Power On Defaults and Alarm Limit Ranges Connect the monitor to an AC power source using the external power supply and verify that the BATTERY CHARGING indicator is lit Do not connect any sensor cables to the monitor Observe the monitor front panel With the monitor off press the ON STANDBY button To successfully complete the self test the monitor must perform the following sequence a b The monitor emits three consecutively higher pitched beeps All indicators light for a few seconds as illustrated in Figure 3 1 Verify that the SpO2 left most display PULSE RATE middle and AUXILIARY right displays all indicate 8 8 8 NELLCOR Symphony N 3000 PULSE RATE
80. he N 3100 fuses and replace if USE BATTERY LOW necessary as indicated in the indicators on the N 3100 light Disassembly Guide section of the steadily but N 3000 does not N 3100 service manual while they are connected to AC via the external power supply Both units are operational The N 3000 and N 3100 do 1 The N 3000 battery may be not operate when discharged To recharge the battery disconnected from the keep the N 3000 connected to its external power supply external power supply Confirm that the BATTERY CHARGING indicator lights The monitors may be used with a less than fully charged battery but with a corresponding decrease in operating time from that charge If the battery fails to hold a charge replace as indicated in the Disassembly Guide section Section 5 Troubleshooting Table 5 7 Stack Problems Continued Condition Recommended Action 5 While operating on 1 Ensure that a good docking connection battery power the exists between the N 3000 and N 3100 N 3000 operates with BATTERY IN If the condition persists recharge the USE BATTERY LOW battery The battery may have enough indicator lighting power left to operate the N 3000 but not the steadily but N 3100 does N 3100 not operate 5 6 7 Serial Port Table 5 8 lists symptoms of problems relating to the serial port and recommended actions If the action requires replacement of a PCB or module refer to Section 6 Disassembly Guide
81. he SpO2 A D converter E F rom the service mode steady state select menu item 38 by rotating the knob until 38 appears in the Sp02 display Press the UPPER ALARM LIMIT button Section 4 Configuration Mode Service Mode and Alarm Active Function Observe the PULSE RATE display The possible values 0 1 2 or 3 indicate the following status 0 Indicates that both A D converters are undergoing self calibration which will take approximately 3 seconds A value of 0 after the 3 second period indicates that both converters have failed self calibration I1 Indicates that the IR A D converter has completed self calibration and the red A D is still undergoing self calibration or has failed self calibration 2 ndicates that the red A D converter has completed self calibration and the IR A D is still undergoing self calibration or has failed self calibration 3 Indicates that both converters have completed self calibration Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 27 Menu Item 39 SpO2 Enable Automatic Operation This function allows you to reset and confirm that the SpO2 module is operating in the automatic mode L 2 Connect the sensor to the N 3000 From the service mode steady state select menu item 39 by rotating the knob until 39 appears in the SpO29 display Press the UPPER ALARM LIMIT button Observe the SpO2 automatic operation setting of
82. he display reads 999 999 this indicates that persistent time is greater than or equal to 999 999 seconds If dashes are displayed the contents of the memory of the persistent time circuit are lost This can occur when the backup lithium battery has been replaced Using a watch or other timepiece wait 3 minutes Subtract the first figure you noted from the figure now displayed on the N 3000 The difference should equal approximately 3 minutes 180 seconds Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 11 Menu Item 20 Reset to Factory Defaults This function allows you to reset the monitor to the Nellcor Puritan Bennett factory default settings see the Specifications section of this manual From the service mode steady state select menu item 20 As soon as you press the UPPER ALARM LIMIT button the default settings are reset Any preset configurable alarms are now lost When the default settings are reset the monitor will beep three times and automatically return to the service mode steady state If the reset was not successful an error code will be displayed 4 3 12 Menu Item 21 Initial Cluster Instrument Number Report 414 This report displays a hexadecimal number corresponding to the initial internal stack address when the instrument is being used in a stack configuration with an address conflict Such a conflict may occur when identical instrument types for example two N 3100s are in
83. he knob until 1 is displayed in the SpO29 6 display Press the UPPER ALARM LIMIT button 2 The UIF software version number is the left most digit in the SpO296 display The next two digits in the Sp02 display represent the major software revision number The minor software revision number is displayed in the PULSE RATE display Press the LOWER ALARM LIMIT BUTTON toreturn to the configuration menu steady state SpO2 Software Version Report 1 Fromthe configuration menu steady state rotate the knob until 2 is displayed in the SpO29 6 display Press the UPPER ALARM LIMIT button 2 TheSpO2 software version number is the left most digit in the SpO296 display The next two digits in the Sp02 display represent the major software revision number The minor software revision number is displayed in the PULSE RATE display Press the LOWER ALARM LIMIT BUTTON toreturn to the configuration menu steady state Set Serial Port Baud Rate Trend Type 1 From the configuration menu steady state rotate the knob until 3 is displayed in the SpO29 6 display Press the UPPER ALARM LIMIT button Note Baud rates should not exceed 19 200 in RS 232 mode use EIA 422 mode Refer to paragraph 6 5 1 to change the communication mode settings 2 The current baud rate in thousands is displayed in the PULSE RATE display To change the default baud rate setting rotate the knob until the desired setting is displayed 3 Pressthe LOWER ALARM LIMIT bu
84. her displays indicate a single bar at the bottom of each window whilethe 80 is displayed From the normal mode steady state press and release the LOWER ALARM LIMIT button Rotate the control knob CCW Verify that the SpO 2 display reduces to a minimum of 20 Rotate the knob CW to verify that the lower alarm limit cannot be raised past the upper alarm limit of 80 35 Section 3 Performance Verification 8 10 11 12 13 14 15 Press the UPPER ALARM LIMIT button two times rapidly twice within 3 seconds Verify that the PULSE RATE display indicates an alarm limit of 190 Press the LOWER ALARM LIMIT button twice rapidly Verify that the PULSE RATE display indicates an alarm limit of 90 Press the AUDIBLE ALARM OFF button and verify that the monitor emits a beep when the button is pressed Press the ON STANDBY button to turn the monitor off Press the ON STANDBY button toturn the monitor on The monitor performs the sequence described in 3 3 3 1 Note The NEO indicator will not be lit Press and release the UPPER ALARM LIMIT button Verify that the SpO296 display indicates an alarm limit of 100 Press and release the LOWER ALARM LIMIT button Verify that the SpO296 display indicates an alarm limit of 85 Press the ON STANDBY button to turn the monitor off This completes the power up tests 3 3 4 Operation with a Pulse Oximeter Tester 3 3 4 4 Alarms 36 Operation with an
85. ibed in paragraph 4 2 8 6 When observing or changing default limits a 3 second timeout is in effect that is if no action is taken within 3 seconds the monitor automatically returns to the normal mode steady state Ensure that the monitor is on Press and release the UPPER ALARM LIMIT button Verify that the monitor emits a single beep and the SpO 2 display indicates an alarm limit of 100 for 3 seconds Verify that the other displays indicate a single bar at the top of each window while the 100 is displayed Sp02 PULSE RATE min DTI LL At the end of the 3 seconds the displays indicate dashes normal mode steady state Press and releasethe UPPER ALARM LIMIT button Begin rotating the control knob counterclockwise CCW within 3 seconds Verify that the SpO296 display reduces to a minimum of 85 Note A decimal point in the display indicates that the alarm limits have changed Press and releasethe LOWER ALARM LIMIT button Verify that the monitor emits a single beep and the SpO2 display indicates an alarm limit of 85 for 3 seconds Verify that the other displays indicate a single bar at the bottom of each window while the 85 is displayed From the normal mode steady state press and release the LOWER ALARM LIMIT button Begin rotating the control knob CCW within 3 seconds Verify that the SpO 296 display reduces to a minimum of 20 Rotate the control knob clockwise CW and verify that the SpO296 di
86. ical Leakage etes cere tees 3 13 3 4 2 1 Chassis Source Current ccccccccccccessssecesee ceesssseaeeeeeeeees 3 13 3 4 2 2 Patient Source Current seseseseeeeee 3 14 3 4 2 3 Patient Sink Current eeesese eene 3 14 3 5 SpO2 Tests curie ott e iibro rettet centi 3 15 3 5 14 RCAL Circuit Test sssssesee eene 3 15 3 5 27 UEbED DIIOVe Teste cete teet erp teen Pepe 3 15 3 6 Piezo Speaker Test rne 3 17 Section 4 Configuration Mode Service Mode and Alarm Active Function eeseeeeen nennen 4 1 4 1 IntrOGbl CtlOn i cte et eee tU e tre bereit e P obs 4 1 4 2 Configuration Mode sssssss essent rne 4 1 4 2 1 Adult Neonatal Mode Default esses 4 2 4 2 2 Default SpO2 Upper Alarm Limit sssssss 4 3 4 2 8 Default SpO2 Lower Alarm Limit sesssss 4 3 Table of Contents 4 2 4 Default Pulse Rate Upper Alarm Limit 4 3 4 2 5 Default Pulse Rate Lower Alarm Limit 4 4 4 2 6 Default Alarm Volume sese 4 4 4 2 Default Alarm Silence Duration s esses 4 4 4 2 8 Configuration Menu ssssse eee 4 5 4 2 8 1 Pulse Tone Volume sss 4 5 4 2 8 2 UIF Software Version Report sss 4 6 4 2 8 3 SpO2 Software Version Report
87. ice Mode and Alarm Active Function 4 2 5 Default Pulse Rate Lower Alarm Limit 1 3 From the configuration mode steady state press the LOWER ALARM LIMIT button twice within 3 seconds The current default value is displayed in the PULSE RATE display To change the lower alarm limit value rotate the knob CW to increase or CCW to decrease Y ou cannot increase the value higher than the current pulse rate upper limit setting The pulse rate lower alarm limit cannot be set lower than 30 Return to configuration mode steady state 4 2 6 Default Alarm Volume Perform the following steps to adjust the default alarm volume 1 From the configuration mode steady state press and hold the AUDIBLE ALARM OFF button After 3 seconds a continuous tone at the current volume setting is emitted VOL is displayed in the PULSE RATE display and the current default alarm setting a number from 1 to 10 is displayed in the Sp02 display While continuing to hold the AUDIBLE ALARM OFF button turn the control knob on the top of the monitor CW to increase the default volume CCW to decrease the default volume Releasethe AUDIBLE ALARM OFF button and the monitor returns to the configuration mode steady state 4 2 7 Default Alarm Silence Duration The default alarm silence duration may also be adjusted while in the configuration mode T o do so J 4 4 F rom the configuration mode steady state press and hold the AUDIBLE ALARM O
88. imit 100 95 SpO 2 Lower Alarm Limit 85 80 Pulse Rate Upper Alarm Limit 170 bpm 190 bpm Pulse Rate Lower Alarm Limit 40 bpm 90 bpm General Factory Default Settings Default Setting Operating M ode Adult Pediatric Pulse Beep Volume 57 5 dB A at 1 meter step 6 Audible Alarm Volume 61 dB A at 1 meter step 8 Audible Alarm Silence Period 60 seconds Alarm Silence Reminder ON Latching Alarms OFF Trend Format 10 second averaged Format 1 Serial Port Baud Rate 19 200 bits per second 9 2 Section 9 Specifications PERFORMANCE Range Saturation 0 100 Pulse Rate 20 250 bpm Accuracy SpO2 Adults 70 10096 2 digits 0 69 unspecified Neonatal 70 95 2 digits 0 69 unspecified Accuracies are expressed as plus or minus X digits saturation percentage points between saturations of 70 10096 This variation equals plus or minus one standard deviation 15D which encompasses 68 of the population All accuracy specifications are based on testing the subject monitor on healthy adult volunteers in induced hypoxia studies across the specified range Adult accuracy is determined with OXISENSOR II D 25 sensors Neonatal accuracy is determined with OXI SENSOR II N 25 sensors In addition the neonatal accuracy specification is neonatal blood on oximetry measurements Pulse Rate SpO2 optically derived 20 250 bpm 3 bpm Accuracy is expressed as plus or minus X bpm across the display range This variation
89. ion 3 Execute your communication software application Port settings should be set as indicated below Baud Rate 19 200 or equivalent to N 3000 setting as determined by using menu item 60 Parity N Data Bits 8 Stop Bits 1 Power on the N 3000 and place it in the service mode steady state Select menu item 25 by rotating the knob until 25 appears in the SpO 2 display Press the UPPER ALARM LIMIT button EE will be displayed in the PULSE RATE display Press the PRINT button to transmit the contents of the EEPROM memory out of the serial port Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 16 Menu Item 28 Enable Disable Battery Charge Circuit 4 3 17 Menu ltem 29 I 416 This test allows you to turn the battery charging circuit on or off 1 From the service mode steady state select menu item 28 by rotating the knob until 28 appears in the SpO29 display Press the UPPER ALARM LIMIT button Observe the battery charging circuit setting of DFF or ON in the PULSE RATE display OFF battery charging circuit disabled ON battery charging circuit enabled Toenable or disable the battery charge circuit rotate the knob until the desired setting is displayed flashing Press the UPPER ALARM LIMIT button Press the LOWER ALARM LIMIT button to return to the service mode steady state nstrument Compatibility Report This function allows you to determine the
90. ives the linear opto isolator to create a current output proportional tothe input voltage This current has an effective gain of 1 2 4 or 8 controlled by DMO and DM 1 U 13 converts the current output of the linear opto isolator U6 to a voltage and then to a digital value g Auto Calibration Switch U26 selects either the differential amplifier U21 output or the internal calibration signals as an input to the U27 based filter If the calibration input is selected U24 can select either a zero or test input The zero input connects the filter input to ground so the system can calibrate the no signal output of the two channels The test input connects the LED current waveform to the filter so the demodulator has an output proportional to the programmed LED current h Nonisolated Power Supply The power supply creates 5 volt from the system battery supply The input voltage is 8 16 volts which is filtered and regulated by U 19 to create the 5 volts U 20 converts this input to a regulated 7 volt output that is regulated to 5 volts by U 18 S4 2 2 UIF Module Technical Supplement The user interface UIF network gateway and battery charge functions are controlled by the UIF module This module provides power to the other modules within the N 3000 controls communication between each module via the stackbus and provides charge control for the lead acid battery a Power and Battery Charging Power from the lead acid battery
91. lay Press the UPPER ALARM LIMIT button The SpO2 corrected IR output signal is displayed in the SpO 2 display in hundredths of volts The SpO 2 corrected red output signal is displayed in the PULSE RATE display in hundredths of volts Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 24 Menu Item 33 SpO2 IR LED Drive Test This function allows you to validate sensors and or the operation of the SpO2 module 1 Connect the sensor to the N 3000 2 Verify that the SpO2 module is set for automatic operation using menu item 39 paragraph 4 3 27 3 Pressthe LOWER ALARM LIMIT button toreturn tothe service mode steady state 4 From the service mode steady state select menu item 33 by rotating the knob until 33 appears in the SpO29 display Press the UPPER ALARM LIMIT button 5 TheSpO2 IR drive value between 0 255 is displayed in the PULSE RATE display 6 Toadjust the drive value rotate the Nellcor Puritan Bennett knob The PULSE RATE display will flash Pressing the UPPER ALARM LIMIT button will set the displayed value in the SpO2 module which will cease its automatic operation The PULSE RATE display will stop flashing 7 Press and hold the PRINT button to display the SpO2 corrected IR and red output signals as described in menu item 32 Releasethe PRINT button 8 Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 22 Menu Item 34 SpO2 Red LED Drive Test
92. le via a 14 pin connector S 3 Technical Supplement SpO2 Module External Power gt Supply Docking UIF Communi Connector lt Module cations Module Battery Display Module Visual Annunciators and Controls Figure S4 1 N 3000 Functional Block Diagram S42 Circuit Description 4 2 1 SpO Module S4 Thefollowing paragraphs discuss the operation of each of the printed circuit boards within the N 3000 oximeter Refer to the appropriate schematic diagram at the end of this supplement as necessary a Isolated Power Supply Transformer T1 and associated components comprise the isolated power supply circuitry of the SpO2 module see sheet 1 of the schematic diagram This power supply is a pulse width modulated current mode switching supply In this circuitry controller U4 is synchronized to a programmable dock frequency ANALOG CLK U4 pin 4 Timing for the isolated circuitry is derived from the switching frequency of the power supply hence ANALOG CLK is used to control front end aliasing If no ANALOG CLK signal is available R13 and C8 provide a default timing circuit for the U 4 controller Two parallel FETs Q7 drive the T1 transformer in flyback mode channeling the current through sense resistors R23 and R133 Any inductive spike created by the leakage inductance of the T1 transformer is filtered out of the circuit by R105 and C9 Feedback for the U4 controller is optocoupled
93. lead acid battery becomes discharged or is removed by the lithium backup battery BT 1 Arcnet controller U6 is the Arcnet controller COM 20020 It is used by the processor to implement the stackbus protocol It is an 8 bit memory mapped device that manages the stackbus communications physical implementation along with the stackbus adapter It is connected to the upper 8 bits of the processor data bus to allow for byte operations from the processor The chip select for U6 is processor pin CS4 Digital to Analog Converter DAC U5 is an 8 bit converter used by the processor to control speaker volume It is a write only memory mapped peripheral connected to the upper 8 bits D15 through D8 of the processor data bus It converts the 8 bit data value written into it by the processor to control the amplitude of the square wave generated by processor output OC2 Theresultant amplitude controlled square wave is then sent to audio amplifier U4 to drive the 8 ohm speaker The chip select for U5 is processor pin CS5 Analog to Digital Converter ADC U27 is an 8 bit analog to digital converter used by the processor to measure three different analog voltages It is a read only memory mapped peripheral connected to the upper 8 bits D15 through D8 of the processor data bus The analog voltage values indicate which display board button has been pressed what the combined voltage of both lithium batteries is and the value of the analog voltage
94. lost during an internal reset and the unit has returned to power on defaults Reset to desired values if different from power on defaults Alarm and beep volume audible alarm silence duration and operating mode have returned to power on defaults due to an internal instrument reset Cannot calibrate sensor possible shorted open LED or cable Check sensor and cable connections Check sensor and cable replace if necessary If replacing sensor and or cable does not fix the probl em remove the N 3000 monitor from service Use the SpO2 diagnostic tests service mode menu item numbers 31 through 39 to further evaluate the problem Failure error codes are those that are displayed by the monitor with a leading digit other than 0 In some cases these codes can be cleared by simply turning the monitor off and then on again Table 5 3 lists the possible failure error codes and the recommended action to take If the action requires replacement of a PCB refer to Section 6 Disassembly Guide If the recommended action fails to solve the problem notify Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative Refer to the Appendix for a further explanation of the codes 54 Section 5 Troubleshooting Table 5 3 N 3000 Failure Error Codes Error Code Recommended Action 106 Turn the monitor off then on again If the error code still appears power down the monitor and verify that the UIF
95. n Current user input values limits volumes times have been lost during an internal reset and the unit has returned to power on defaults Alarm and beep volume audible alarm silence duration and operating mode have returned to power on defaults due to an internal instrument reset Cannot calibrate sensor FAILURE ERROR CODES Table A 3 lists the possible failure error codes in numerical order Refer to Table 5 3 for a list of corrective measures Table A 3 N 3000 Failure Error Codes an iunn M RN UIF unknown POST failure typically processor derail or memory corruption during POST UIF startup problem missing resource or unexpected state during module initialization Unable to complete operation Institutional parameters arein unknown state A 3 Appendix Table A 3 N 3000 Failure Error Codes Continued 205 SpO 2 controller clock failure check SpO2 digital board clock select jumper and digital board to analog board connection SpO 2 processor clock failure SpO 2 unknown POST failure SpO 2 unable to send a command to UIF module 276 SpO 2 commands physically but not logically accepted by UIF module or SpO2 receiver broken Illegal operating mode change A5 INTERNALLY CORRECTED ERROR CODES A 4 Internally corrected error codes are not normally displayed These errors are logged on the internal Error Log then the N 3000 watchdog circuitry resets the monitor They can be accessed only by
96. n Verify that the SpO 2 display indicates an alarm limit of 85 Press the UPPER ALARM LIMIT button two times rapidly Verify that the PULSE RATE display indicates an alarm limit of 170 Press the LOWER ALARM LIMIT button two times rapidly Verify that the PULSE RATE display indicates an alarm limit of 40 Press the ON STANDBY button to turn the monitor off 3 3 3 3 Neonate Power On Defaults and Alarm Limit Ranges Note When observing or changing default limits a 3 second timeout is in effect that is if no action is taken within 3 seconds the monitor automatically returns to the normal mode steady state Turn the monitor on Press the NEW PATIENT NEONATAL button on the rear panel two times rapidly twice within 2 seconds Verify that the NEONATAL MODE indicator on the front panel is lit From the normal mode steady state press and release the UPPER ALARM LIMIT button Verify that the Sp02 display indicates an alarm limit of 95 for 3 seconds Verify that the other displays indicate a single bar at the top of each window while the 95 is displayed From the normal mode steady state press and release the UPPER ALARM LIMIT button Begin rotating the control knob CCW within 3 seconds Verify that the SpO 296 display reduces to a minimum of 80 From the normal mode steady state press and release the LOWER ALARM LIMIT button Verify that the Sp02 display indicates an alarm limit of 80 Verify that the ot
97. n the N 3000 and the N 3100 Information is exchanged over two pins on the N 3000 docking connector and two sockets on the N 3100 upper docking connector As with the internal stackbus the Arcnet local area network standard is used as the protocol RS 485 drivers and receivers are used for signaling A proximity sensor in the bottom of the N 3000 or N 3100 detects when the monitor is docked enabling the stackbus signals Access to the stackbus is accomplished through token passing A token designates which station module or instrument has control of the stackbus Thetoken is passed in a circular manner from station to station The station holding the token has the exdusive right to transmit onto the stackbus but the right to transmit may be temporarily donated to another station to acknowledge a transmission by the token holder The token holder must relinquish control of the stackbus by passing the token to the next station on theloop within a specified period of time During normal operation the right to access the stackbus passes from station to station in a continuous consistent manner All instruments participate in the loop when stacked and powered on Maintenance of the token passing loop initialization lost token recovery and the addition of new stations is implemented in the N 3000 s UIF and SpO2 modules and in the N 3100 by the specialized devices and system software S4 CIRCUIT ANALYSIS This section provides a descriptiv
98. nd verify proper operation Nate Ifthe replacement battery is low on charge the BATTERY CHARGING indicator may not light if the monitor is off and connected to AC power If that is the case turn the N 3000 on to begin charging 6 3 Section 6 Disassembly Guide 6 4 FUSE REPLACEMENT 1 Complete the procedure in paragraph 6 2 2 Replace the fuses as shown in Figure 6 3 with an equivalent replacement Fuse F2 2 5 amp Fuse F1 1 amp EM T Battery Figure 6 3 N 3000 Fuses 3 Reinstall the battery and battery cover Caution The battery fuse F2 on the Docking Connector PCB must be removed before disconnecting the docking connector cable from connector J 17 as indicated in paragraph 6 5 Failure to remove the fuse may result in damage to the Lower Docking Connector PCB or UIF PCB 65 MONITOR DISASSEMBLY 1 Complete the procedure in paragraph 6 2 2 Remove the four corner screws that hold the monitor together Figure 6 4 Screws Screws e e G e o LLL ETE E Figure 6 4 N 3000 Corner Screws 64 Section 6 Disassembly Guide 3 Pull the carrying handle down to the right 4 Pull the unit apart swinging the bottom half to your left as illustrated in Figure 6 5
99. ng 4 PresstheUPPER ALARM LIMIT button to store the default setting 5 PresstheLOWER ALARM LIMIT button toreturn tothe service mode steady state 4 3 14 Menu Item 23 Enable Disable Alarm Silence Reminder This function allows you to disable or enable the alarm silence reminder feature The Nellcor Puritan Bennett factory default setting is alarm silence reminder enabled 1 From the service mode steady state select menu item 23 by rotating the knob until 23 appears in the SpO29 display Press the UPPER ALARM LIMIT button 2 Observe the alarm silence reminder setting of OFF or ON in the PULSE RATE display OFF alarm silence reminder disabled ON alarm silence reminder enabled 3 Tochangethe alarm silence reminder setting rotate the knob until the desired setting is displayed flashing 4 PresstheUPPER ALARM LIMIT button to store the default setting 5 PresstheLOWER ALARM LIMIT button toreturn tothe service mode steady state 4 3 15 Menu Item 25 Dump EEPROM Data This function allows you to dump the entire contents of the EEPROM toa serial data capture device This data may then be transmitted to N ellcor Puritan Bennett to assist in diagnosing the condition of the instrument Note The N 3000 must be operating from AC power to perform this menu item 1 TurntheN 3000 off 2 Connect the N 3000 to a PC through the serial port 4 15 Section 4 Configuration Mode Service Mode and Alarm Active Funct
100. nother instrument turn all stacked instruments off and then on again 55 Section 5 Troubleshooting 56 Table 5 3 N 3000 Failure Error Codes Continued Recommended Action 178 191 1 2 192 195 196 Turn the monitor off then on again If the error code still appears use the service mode menu item 20 to reset the default values to factory default values as discussed in Section 4 Configuration and Service Modes If the error code still appears power down the monitor and replace the UIF PCB Turn the monitor off then on again If the error code still appears verify compatibility of UIF Module SW ROM and SpO2 Module SW ROM part numbers by using service mode menu item 17 If the numbers are compatible power down and verify that the SpO2 Module ROM is securely seated Verify that the SpO2 Controller PCB and SpO2 module are securely seated Turn the monitor on If the error code still appears replace the SpO2 Controller PCB If the error code still appears power down the monitor and replacethe UIF PCB Turn the monitor off then on again If theerror code still appears power down the monitor and replacethe UIF PCB 1 Turn the monitor off then on again 2 Usethe service mode menu item 29 to verify the 203 206 211 1 2 204 205 1 2 275 276 1 2 compatibility of your software If the error code still appears verify compatibility of the RO
101. ns to some but not all with the service mode menu item 3 button buttons test If faulty buttons are AUDIBLE ALARM SILENCE button or NEW PATIENT NEONATAL button replace UIF PCB If faulty buttons are on front panel replace Display PCB If the buttons still do not work replacethe UIF PCB The N 3000 turns on PresstheNEW PATIENT NEONATAL button but does not respond twice rapidly If the NEONATAL MODE to either the knob or indicator lights replacethe Display PCB any of the buttons IftheNEONATAL MODE indicator does not light replacethe UIF PCB 57 Section 5 Troubleshooting 5 6 4 Display Alarms Table 5 5 lists symptoms of problems relating to nonfunctioning displays audible tones or alarms and recommended actions If the action requires replacement of a PCB or module refer to Section 6 Disassembly Guide Table 5 5 Display Alarms Problems Condition 1 Display values are missing or erratic 2 Display segments do not light 3 Alarm sounds for no apparent reason 4 Alarm does not sound 58 Recommended Action If the sensor is connected replace the sensor connector assembly If the condition persists replace the sensor extension cable If the condition does not change replace the SpO2 PCB If the condition still persists replace the UIF PCB Verify the problem with the service mode menu item 2 knob and lamp test Check the connection between the
102. o 12 B5 16 40 B i N Section 7 Spare Parts Figure 7 1 shows the N 3000 expanded view with numbered callouts relating to the spare parts list Rear panel 28 Battery cover 1 New patient neonatal Lead acid battery 2 Battery bracket 3 Bottom cover 4 Carrying handle 5 Docking connector PCB 40 SpO2 PCB 29 Left panel 6 Speaker gasket 7 Speaker with lead 8 SpO2 controller PCB 27 Communications PCB 9 UIF PCB 26 Lithium battery small 11 Dock canneti Lithium battery large 12 cable 36 Grounding clips 34 i lt Top cover 15 Audible alarm off button 35 S o Display PCB 16 Optical encoder assembly 23 SpO2 rubber gasket 37 Control knob 22 ON STDBY Right panel 33 and PRINT buttons 20 Figure 7 1 N 3000 Expanded View 7 2 SECTION 8 PACKING FOR SHIPMENT 8 1 General Instructions 8 2 Repacking in Original Carton 8 amp 3 Repacking in a Different Carton To ship the monitor for any reason follow the instructions in this section 8 1 GENERAL INSTRUCTIONS Pack the monitor carefully Failure tofollow the instructions in this section may result in loss or damage not covered by the Nellcor Puritan Bennett warranty If the original shipping carton is not available use another suitable carton North American customers may call Nellcor Puritan Bennett Technical S
103. o store institutional defaults and system error code data Display Controllers These controllers are used by the processor to display data on the display board Processor Code PROM U10 The PROM contains the program that the processor uses to perform the user interface and gateway functions for the N 3000 Processor U3 address lines A1 through A17 are connected to PROM addresses AO through A16 allowing even word address access to the PROM To allow the use of either a 256K x 16 or 128K x 16 PROM at U 10 Pin 43 of U10 is connected toJ 10 Pin 2 On a 256K x 16 PROM Pin 43 will be PROM address A17 On a 128K x 16 PROM Pin 43 will bean active high output enable Address line A18 from U3 is connected toJ 10 pin 1 and VDD is connected to J 10 pin 3 Attaching a jumper between J 10 pins 1 and 2 will connect U3 address line A18 to PROM address A17 to address all 256K words in a 256K x 16 PROM Connecting a jumper between J 10 Pins 2 and 3 will connect Pin 43 to VDD for the active hi output enable of a 128K x 16 PROM S 9 Technical Supplement S 10 The PROM chip select is connected to the CSBOOT signal Pin 112 of U3 At system reset this signal defaults to decode address 00000 for a block of 1 megabyte held active for 13 wait states and gated with the processor address strobe The output enable of the PROM pin 22 is connected to ground through R8 to allow data to be gated onto the data bus as soon as the CSBOOT signal goes active
104. o the service mode steady state 4 3 2 Menu Item 2 Knob and Lamp Test This test verifies that indicators front panel lamps and the control knob are functional 1 From the service mode steady state select menu item 2 by rotating the knob until 2 appears in the SpO296 display Press the UPPER ALARM LIMIT button All indicators light Rotate the knob CW to light each display segment decimal indicator and blip bar in a firefly pattern to verify that each lamp works Nate ThePOWER ON indicator is not tested with this procedure It can be verified by turning the monitor on and off The BATTERY CHARGING indicator is also not tested Rotate the knob CCW to reverse the firefly pattern Knob functionality is verified by the even movement through the firefly pattern as the knob is turned Press the LOWER ALARM LIMIT button toreturn to the service mode steady state 4 3 3 Menu Item 3 Button Test This test verifies proper operation of individual buttons and button combinations 1 410 From the service mode steady state select menu item 3 by rotating the Ndlcor Puritan Bennet knob until 3 appears in the Sp02 display Press the UPPER ALARM LIMIT button A 0 appears in the PULSE RATE display 2 3 Section 4 Configuration Mode Service Mode and Alarm Active Function Press the following button and or button combinations None pressed Audible alarm off New patient neonatal rear panel Uppe
105. oduction 5 2 Howto Use this Section 5 3 Who Should Perform Repairs 54 Replacement Level Supported 55 Obtaining Replacement Parts 5 6 Troubleshooting Guide INTRODUCTION This section explains how to troubleshoot the N 3000 if problems arise Tables are supplied that list possible monitor difficulties along with probable causes and recommended actions to correct the difficulty HOW TO USE THIS SECTION Usethis section in conjunction with Section 3 Performance Verification and Section 7 SpareParts To remove and replace a part you suspect is defective follow theinstructions in Section 6 Disassembly Guide The circuit analysis section in the Technical Supplement offers information on how the monitor functions WHO SHOULD PERFORM REPAIRS Only qualified service personnel should open the monitor housing remove and replace components or make adjustments If your medical facility does not have qualified service personnel contact Nellcor Puritan Bennett Technical Services or your local Nellcor Puritan Bennett representative REPLACEMENT LEVEL SUPPORTED The replacement level supported for this product is to the printed circuit board PCB and major subassembly level Once you isolate a suspected PCB follow the procedures in Section 6 Disassembly Guide to replace the PCB with a known good PCB Check to see if the trouble symptom disappears and that the monitor passes all performance tests If the trouble symptom persists swap back
106. of the power cord ground wire from the AC plug and connection with the SPS external power supply chassis ground 1 3 4 2 Electrical Leakage Configure the electrical safety analyzer as follows Function Ground resistance test Range mo Connect the monitor s AC plug tothe analyzer as recommended by the analyzer operating instructions Connect the analyzer resistance input lead to the grounding lug on the rear panel of the external power supply Verify that the analyzer indicates 150 milliohms or less Thefollowing tests verify the electrical leakage of the monitor Chassis Source Current Patient Source Current Patient Sink Current 3 4 2 1 Chassis Source Current This test is in compliance with IEC 601 1 and AAMI Standard ES1 Paragraph 3 3 1 Chassis Source Current between the power ground and part b exposed conductive hardware 1 Configure the electrical safety analyzer as follows Function Leakage Range uA Connect the monitor AC plug to the electrical safety analyzer as recommended by the analyzer operating instructions Connect the electrical safety analyzer leakage input lead to the monitor s SPS external power supply grounding lug The analyzer leakage indication must not exceed 100 microamps at 100 120 VAC or 500 microamps at 220 240 VAC for the following AC power configurations while the monitor is turned on or while turned off AC LINE POWER LINE POLARITY GROUND CABLE Normal Normal
107. ol knob CW As the number in the PULSE RATE display increases from O to 254 the volume will correspondingly increase Press the LOWER ALARM LIMIT button to return to the service mode steady state 411 Section 4 Configuration Mode Service Mode and Alarm Active Function From the service mode steady state select menu item 5 by rotating the knob until 5 appears in the SpO296 display Press the UPPER ALARM LIMIT button The ICC value appears as the two right most digits in the PULSE RATE display The monitor s configuration is represented by one of the following values ICC Value Monitor Configuration 03 SpO2 only with serial port 07 SpO2 and ECG only with serial port OF SpO2 ECG and respiration with serial port 12 SpO2 only with wired network interface 16 SpO2 and ECG only with wired network interface 1E SpO2 ECG and respiration with wired network interface FF Invalid configuration If the displayed ICC value differs from the value stored in the EEPROM then the displayed value will flash If the displayed value is flashing press the UPPER ALARM LIMIT button to save the value as the default Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 6 Menu Item 6 Total Operating Hours Report This report displays the total number of operating hours logged by the unit since it was produced 1 From the service mode steady state select menu item 6 by rotating the knob until 6
108. or s sensor input The analyzer leakage indication must not exceed 50 microamps for 240 volts 10 microamps for 120 volts for the following AC power configurations with the monitor on AC LINE POWER LINE POLARITY GROUND CABLE Normal Normal Normal Open 3 5 SPO2 TESTS Section 3 Performance Verification The following tests can be used to verify analyze and troubleshoot the SpO2 circuitry of the N 3000 RCAL Circuit Test LED Drive Tests The tests require use of the SRC 2 tester and the service mode configuration as detailed in paragraph 4 3 3 5 1 RCAL Circuit Test 1 3 5 2 LED Drive Tests Connect an SRC 2 pulse oximeter tester to the sensor input cable and connect the cable to the monitor Set the SRC 2 as follows SWITCH POSITION RATE 112 LIGHT LOW MODULATION OFF MODE LOC RCAL 63 Enter the service mode steady state as instructed in paragraph 4 3 Select menu item 30 by rotating the knob until 30 appears in the SpO 2 display Press the UPPER ALARM LIMIT button TheRCAL value 63 is displayed in the PULSE RATE display Set the SRC 2 RCAL Mode switch to REM RCAL 64 The RCAL value 64 is displayed in the PULSE RATE display Press the LOWER ALARM LIMIT button to return to the service mode steady state Connect an SRC 2 pulse oximeter tester to the sensor input cable and connec the cable to the monitor Set the SRC 2 as follows SWITCH POSITION RATE 112 LIGHT LOW MODULATION OF
109. or the lower docking connector is delivered via the lower docking board ribbon cable connected to J 13 Pin 1 of J 13is BATTPLUS1 and Pin 6 of J 13 is CHARGEBUS Pin 2 of J 13 is earth ground and Pin 5 is system ground These pins are defined in table S4 1 Both CHARGEBUS and BATTPLUS1 are connected using diode isolation and then connected through the drain of power transistor Q10 and Pin 7 of J 13 BATTBUS to other stacked instruments Power switching and battery charging are controlled by U 20 a BQ2001 power monitor IC The BQ2001 power monitor IC has three sources of power input CHARGEBUS from the SPS N or SPS I power supply the N 3000 lead acid battery or lithium battery BT1 The ON STANDBY button is connected to BQ2001 which controls the gate of power transistor Q10 Processor U3 is also connected to BQ2001 receiving interrupts and reading data from the BQ2001 status registers when the N 3000 is on When the N 3000 is OFF standby mode and the ON STANDBY button is pressed the BQ2001 enables transistor Q10 and analog power from either the CHARGEBUS or the lead acid battery is supplied to the 5V regulator U 17 and U 18 and the SpO2 module It also signals the processor with an interrupt that there is new data in its status registers for the processor to read As soon as the processor powers up and clears reset it will process the interrupt from the BQ2001 and begin to execute its program S 7 Technical Supplement S 8
110. ose from an instrument that measures fractional saturation fractional measurements must be converted as follows fractional saturation functional saturation x1 100 96 carboxyhemoglobin methemoglobin S2 3 Measured Versus Calculated Saturation When saturation is calculated from a blood gas partial pressure of oxygen PO 2 the calculated value may differ from the SpO 2 measurement of a pulse oximeter This usually occurs because the calculated saturation was not appropriately corrected for the effects of variables that shift the relationship between PO2 and saturation Figure S2 1 pH temperature the partial pressure of carbon dioxide PCO2 2 3 DPG and fetal hemoglobin __ pH 100 Temperature be 7 De PCO2 a 2 3 DPG Fetal Hb 4 a 4 4 L H 4 50 1 p t t Temperature t PCO2 f t 3 DPG Saturation 50 100 PO mmHg Figure S2 1 Oxyhemoglobin Dissociation Curve S3 STACKBUS INTERCONNECT Stackbus is the term for the communication interconnect between the N 3000 modules and also between the N 3000 and N 3100 instruments The internal stackbus is used for communications between the UIF PCB and the SpO2 module Information is transmitted over a single PCB trace using the Arcnet discussed in paragraph S4 Circuit Analysis local area network standard as the message protocol S 2 Technical Supplement The external stackbus is used for communications betwee
111. pO2 RCAL Report sssssss 4 17 4 3 19 Menu ltem 31 SpO2 IR and Red Offset Report 4 17 4 3 20 Menu ltem 32 SpO2 IR and Red Signals Report 4 17 4 3 24 Menu ltem 33 SpO2 IR LED Drive Test 4 18 4 3 22 Menu ltem 34 SpO2 Red LED Drive Test 4 18 4 3 23 Menu ltem 35 SpO2 DM Gain Test ssss 4 19 4 3 24 Menu ltem 36 SpO2 P Gain Test sssssss 4 19 4 3 25 Menu ltem 37 Set SpO2 Analog Test Mode 4 20 4 3 26 Menu ltem 38 SpO2 A D Cal Line Test 4 20 4 3 27 Menu ltem 39 SpO2 Enable Automatic Operation 4 21 4 3 28 Menu ltem 60 Set Serial Port Baud Rate 4 21 4 3 29 Menu ltem 61 Serial Port Loop Back Test 4 22 4 3 30 Menu ltem 62 Serial Port Transmit Test 4 22 44 Alarm Active Function eessees eene 4 23 Section 5 Troubleshooting sse eee 5 1 5 1 ojigoro Veto RETE 5 1 5 2 Howto Use this Section ssss sse 5 1 53 Who Should Perform Repair S sss 5 1 54 Replacement Level Supported sess 5 1 55 Obtaining Replacement Parts sss sss 5 1 5 6 Troubleshooting Guide ss sse 5 2 5 62 IPOWOE seo Lee ir e P a PR n E 5 3 5 6 2 Error Codes
112. r alarm limit Lower alarm limit Print Upper and lower alarm limits simultaneously Upper lower limits and print simultaneously Upper limit and audible alarm off simultaneously Lower limit and audible alarm off simultaneously Any combination not listed above 4 3 4 Menu Item 4 Speaker Test Press each of the buttons and button combinations listed below The corresponding number appears in the PULSE RATE display to indicate that these buttons and button combinations are functioning correctly Displayed number 0 Oo ON O Ui BP WYN L I o This test verifies that the volume control is functional and determines whether or not there are any discontinuities or saturation conditions in the audible output 1 Rotate the control knob CCW to decrease the volume 4 3 5 Menu ltem 5 Internal Configuration Code ICC Report This menu item verifies whether the current monitor configuration is the desired configuration ThelCC is the hexadecimal representation of the instrument hardware configuration derived by the UIF processor through internal examination of the modules and software present in the N 3000 Rotate the knob CW or CCW toreturn tothe service mode steady state From the service mode steady state select menu item 4 by rotating the knob until 4 appears in the SpO296 display Press the UPPER ALARM LIMIT button A 1 appears in the PULSE RATE display and a low level audible tone heard Rotate the contr
113. rated in Figure 6 10 6 11 LITHIUM BATTERY REPLACEMENT 6 12 REASSEMBLY Disconnect AC line voltage from the monitor With the monitor upside down and facing you open up the chassis as shown in Figure 6 5 Locate the lithium batteries on the UIF PCB Figure 6 9 The backup lithium battery the larger of the two lithium batteries is used to supply backup power to the UIF processor if the lead acid battery fails during DC use It also supplies power to the piezo power loss alarm speaker during a microprocessor or power failure alarm The other Smaller battery provides additional voltage to power the piezo speaker Slide battery or batteries from underneath the spring clips Do not dispose of lithium batteries by placing them in the regular trash Dispose of properly or return to Nellcor Puritan Bennett Technical Services for disposal Replace batteries observing correct polarity positive terminal up Ensure that they are secure Reassemble the chassis Reassemble the monitor by performing the disassembly steps in reverse order 1 Ensurethat all plastic isolation shields are reinstalled correctly 2 Ensurethat the small wiper fingers that make contact with the side panel metalized coating throughout the top chassis fit properly 3 Ensurethat all buttons are seated properly and operate smoothly 4 All of the side panels have channel guides molded into the top and bottom chassis to assist in proper location and seating
114. rcuits Movethe ESU ground pad as close to the surgical site as possible and as far away from the sensor as possible Verify the SpO2 performance with service mode menu items 31 39 Verify the pulse measurement function with the SRC 2 If the condition still persists replace the UIF PCB 59 Section 5 Troubleshooting 5 6 6 Stacked Operation 510 Table 5 7 lists symptoms of problems encountered while in the stacked configuration with the N 3100 and recommended actions Refer to the N 3100 service manual for more troubleshooting information Table 5 7 Stack Problems Condition Recommended Action 1 BATTERY IN USE 1 Ensure that the power supply is BATTERY LOW indicators on plugged into an operational AC outlet the N 3000 and N 3100 light If it is and the green indicator light is steadily while they are not lit replace the power supply connected to AC via the external power supply Both If the green SPS indicator is lit units are operational ensure that the power supply is properly plugged into the N 3100 Check the N 3000 fuse and replace if necessary BATTERY IN USE Ensurethat a good docking connection BATTERY LOW indicator on exists between the N 3000 and theN 3000 lights steadily but N 3100 N 3100 does not while they are connected to AC The Check the N 3000 fuse and replace it if units are operational necessary as indicated in the Disassembly Guide section BATTERY IN Check t
115. rror code in the PULSE RATE display If 256 is displayed there have been 256 or more occurrences Continue to rotate the control knob CW The total number of operating hours when the last instance of the error occurred is displayed in the SpO 2 and PULSE RATE displays Press the LOWER ALARM LIMIT button toreturn to the service mode steady state 4 3 8 Menu Item 17 Instrument Identification IID Report This report displays a hexadecimal number corresponding to the instrument identifier This number should agree with the address label on the outside of the instrument However the label and the internal value may disagree if the monitor UIF module was replaced and the external label was not changed 1 From the service mode steady state select menu item 17 by rotating the knob until 17 appears in the SpO29 display Press the UPPER ALARM LIMIT button A hexadecimal number appears across the entire monitor display with an H in the last far right position Verify that this number agrees with the number on the monitor external label If the number does not agree the number on the external label should be changed to agree with the displayed number Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 9 Menu ltem 18 Power Status This test allows you to determine battery conditions 1 From the service mode steady state select menu item 18 by rotating the knob until 18 appe
116. sensors follow individual directions for use PERIODIC SAFETY AND FUNCTIONAL CHECKS BATTERIES The following safety checks should be performed by a qualified service technician after any repair or opening of the case upon return of the instrument from any use outside your institution s control or every 2 years 1 Inspect the exterior of the N 3000 and verify that there is no evidence of damage Refer to Section 5 Troubleshooting for repair If the N 3000 cannot be repaired contact Nellcor Puritan Bennett s Technical Services Department or your local Nellcor Puritan Bennett representative 2 Inspect safety labels for legibility If labels are not legible contact Nellcor Puritan Bennett s Technical Services Department or your local Nellcor Puritan Bennett representative 3 Verify that the monitor performs properly as described in paragraph 3 3 4 Perform the electrical safety tests detailed in paragraph 3 4 If the unit fails these electrical safety tests do not attempt to repair contact Nellcor Puritan Bennett s Technical Services Department or your local Nellcor Puritan Bennett representative 5 Inspect fuse s for proper rating F 1 1 0 Amp 250 Volt Slo Blow and F2 2 5 Amp 250 Volt Slo Blow If necessary replace as described in paragraph 6 4 Nellcor Puritan Bennett recommends replacing instrument batteries at least every 2 years Toreplace the batteries refer to Section 6 Disassembly Guide If the N 3000
117. sing the NEW PATIENT NEONATAL button twice within 2 seconds Change the desired limit using the same method as adult default limits When an SpO2 or pulse rate default limit has been changed a decimal point will appear after the displayed limit until the configuration mode is exited 4 2 1 Adult Neonatal Mode Default The mode adult or neonatal that the monitor is in when exiting the configuration mode becomes the power on default To change from a power on default of adult mode to a power on default of neonatal mode enter the configuration mode steady state Press theNEW PATIENT NEONATAL button twice within 2 seconds and then power down by pressing the ON STANDBY button 42 Section 4 Configuration Mode Service Mode and Alarm Active Function 4 2 2 Default SpO2 Upper Alarm Limit 1 From the configuration mode steady state press and release the UPPER ALARM LIMIT button The current default value is displayed in the SpO 2 display Dashes appear in the PULSE RATE display the upper horizontal segments of the display indicating that the monitor is in the set SpO2 upper alarm limit mode 2 Tochangethe upper alarm limit value rotate the knob on top of the monitor Y ou cannot decrease the value lower than the current SpO2 lower alarm limit default setting The SpO2 upper alarm limit cannot be set higher than 100 3 Return to configuration mode steady state Nate If you press the LOWER ALARM LIMIT button before the
118. splay cannot be raised past the upper alarm limit setting of 85 Press the UPPER ALARM LIMIT button twotimes rapidly twice within 3 seconds Verify that the monitor emits two beeps and the PULSE RATE display indicates an alarm limit of 170 for 3 seconds From the normal mode steady state press the UPPER ALARM LIMIT button two times rapidly Begin rotating the control knob CCW within 3 seconds Verify that the PULSE RATE display reduces to a minimum of 40 Press the LOWER ALARM LIMIT button two times rapidly Verify that the PULSE RATE display indicates an alarm limit of 40 for 3 seconds From the normal mode steady state press the LOWER ALARM LIMIT button two times rapidly Rotate the control knob CCW Verify that the PULSE RATE display reduces to a minimum of 30 10 11 12 13 14 15 16 Section 3 Performance Verification Press the AUDIBLE ALARM OFF button located on top of the N 3000 and verify that the monitor emits a low pitched beep when the button is pressed Press the ON STANDBY button to turn the monitor off Verify that the monitor emits three decreasing pitch beeps Observe the monitor front panel Press the ON STANDBY button The monitor performs the sequence described in paragraph 3 3 3 1 Power On Self Test 3a through 3g Press and release the UPPER ALARM LIMIT button Verify that the SpO 2 display indicates an alarm limit of 100 Press and release the LOWER ALARM LIMIT butto
119. ss of 40000h block length of 128K 8 bit port both bytes access both read and write access and gated with AS This configuration gives a data memory range of 40000 through 5FFFF The number of wait states to generate depends upon the U1 clock speed and the U3 access speed The number of wait states for CSO is set to 0 based on a U3 access time of 85ns minimum d Stackbus The SpO2 controller board also communicates with other boards within the N 3000 via the stackbus The stackbus is controlled by the COM 20020 Arcnet controller chip U6 which is enabled by U1 CS1 CS1 must be configured as a chip select with a start address of 60000h block length of 2k 8 bit port both bytes access both read and write access and gated with AS This configuration maps the stackbus in the memory range of 60000h through 607F Fh The number of wait states to generate depends on the U1 clock speed The number of wait states for CS1 must be set to 2 based upon a CPU clock speed of 16 0 MHz e Programmable Clock The dock frequency on the SpO2 controller board is programmed via software The clock signal is labeled CTRL_CLK The dock circuitry consists of U7 and U10 One half of U7 takes a 20 MHz input and produces three output frequencies 10 MHz 2 5 MHz and 1 25 MHz The 10 MHz frequency is the dock rate of the programmable down counter U 10 The second half of U7 takes the terminal count TC output of U 10 and converts it to a 5096 duty cycle
120. tate the knob to display the desired default trend type 3 Pressthe LOWER ALARM LIMIT BUTTON toreturn tothe configuration menu steady state Reset to Factory Defaults SERVICE MODE Menu item number 5 allows you to reset all default settings to the original factory settings as listed in paragraph 9 6 Factory Default Settings of the Specifications section 1 From the configuration menu steady state rotate the knob until 5 is displayed in the SpO296 display 2 PresstheUPPER ALARM LIMIT button to reset to factory defaults Three beeps indicate that all configurable power on default parameters except latching alarms enable and alarm silence reminder enable are now set to their factory default values You are automatically returned to the configuration menu steady state The service mode allows the technician to go through a series of tests to determine monitor functionality and to access the error log report The service modes cannot be accessed by the N 3000 while it is stacked with an active N 3100 If operating in the stacked configuration disconnect the N 3000 from the N 3100 or turn the N 3100 off before entering the service mode Usethe following procedures to place the monitor into the service mode l Ifthe monitor is on turn it off 2 While simultaneously holding down the UPPER and LOWER ALARM LIMIT buttons and the PRINT button press and releasethe ON STANDBY button Continueto press and hold the UPPER and L
121. te 4 From the service mode steady state select menu item 35 by rotating the knob until 35 appears in the SpO29 display Press the UPPER ALARM LIMIT button 5 TheSpO2 demodulator gain value from 0 to 6 is displayed in the PULSE RATE display 6 Toadjust the gain rotate the knob The PULSE RATE display will flash Pressing the UPPER ALARM LIMIT button will set the displayed value in the SpO2 module which will cease its automatic operation The PULSE RATE display will stop flashing 7 Press and hold the PRINT button to display the SpO2 corrected IR and red output signals as described in menu item 32 Releasethe PRINT button 8 Pressthe LOWER ALARM LIMIT button toreturn tothe service mode steady state 4 3 24 Menu Item 36 SpO2 P Gain Test This function allows you to validate sensors and or the operation of the SpO2 module L 2 Connect the sensor to the N 3000 Verify that the SpO2 module is set for automatic operation using menu item 39 paragraph 4 3 27 Press the LOWER ALARM LIMIT button to return to the service mode steady state From the service mode steady state select menu item 36 by rotating the knob until 36 appears in the SpO29 display Press the UPPER ALARM LIMIT button 4 19 Section 4 Configuration Mode Service Mode and Alarm Active Function 5 The SpO2 preamp gain from O to 3 is displayed in the PULSE RATE display To adjust the gain value rotate the knob The PULSE RATE displ
122. tem 31 SpO2 IR and Red Offset Report This function allows you to validate the operation of the SpO2 module The values represent the DC voltage offset for the current amplifier gain when the amplifier inputs are zeroed 1 2 Connect the sensor cable and SRC 2 to the N 3000 Set the SRC 2 as follows SWITCH POSITION RATE 38 LIGHT LOW MODULATION OFF MODE LOC RCAL 63 From the service mode steady state select menu item 31 by rotating the knob until 31 appears in the SpO29 display Press the UPPER ALARM LIMIT button The SpO2 IR offset appears in the SpO 2 display and the SpO2 red offset appears in the PULSE RATE display The values are displayed in millivolts Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 3 20 Menu Item 32 SpO2 Corrected IR and Red Signals Report This function allows you to validate the operation of the SpO2 module The values represent the outputs of the IR and red sensor channels after the amplifier offset values have been applied 1 2 Connect the sensor to the N 3000 Verify that the SpO2 module is set for automatic operation using menu item 39 paragraph 4 3 27 Press the LOWER ALARM LIMIT button to return to the service mode steady state 4 17 Section 4 Configuration Mode Service Mode and Alarm Active Function 4 From the service mode steady state select menu item 32 by rotating the knob until 32 appears in the SpO29 disp
123. that after a few seconds the monitor indications are within the tolerances listed in step 6 With the LIGHT switch set to HIGH 2 verify that after a few seconds the monitor indications are within the tolerances listed in step 6 Move the MODULATION switch to HI GH and verify that after a few seconds the monitor indications are within the tolerances listed in step 6 Move the LIGHT switch to LOW and verify that after a few seconds the monitor indications are within the tolerances listed in step 6 Move the MODULATION switch to LOW and verify that after a few seconds the monitor indications are within the tolerances listed in step 6 Move the RATE switch to 201 bpm After approximately 30 seconds verify that the PULSE RATE display is flashing and the display indications are within the tolerances shown below Oxygen Saturation Range 79 to 83 Pulse Rate Range 195 to 207 bpm Move the MODULATION switch to HI GH and verify that after a few seconds the monitor indications are within the tolerances listed in step 12 Move the LIGHT switch to HIGH 1 and verify that after a few seconds the monitor indications are within the tolerances listed in step 12 Move the MODULATION switch to LOW and verify that after a few seconds the monitor indications are within the tolerances listed in step 12 Move the LIGHT switch to HIGH 2 and verify that after a few seconds the monitor indications are within the tolerances listed in step 12 With the MO
124. the UPPER ALARM LIMIT button The PATIENT MOTION indicator goes out and the PULSE SEARCH indicator illuminates PULSE SEARCH This indicates that you are now in a submenu of the selected main menu item Use the knob to move from one submenu item to the next Not all menu items have submenu selections Toreturn tothe service mode steady state from a menu item press the LOWER ALARM LIMIT button Menu item 3 Button Test is an exception it is exited by rotating the knob Toexit the service mode power down the monitor by pressing the ON STANDBY button The N 3000 is automatically powered down if no action is taken for approximately 5 minutes Main menu items available from the service mode steady state are discussed in numerical order as indicated in Table 4 3 Section 4 Configuration Mode Service Mode and Alarm Active Function Table 4 3 Service Mode Steady State Main Menu Paragraph Type of Report Test Described Software Version Report 4 3 1 Knob and Lamp Test 4 3 2 Button Test 1 Speaker Tet Internal Configuration Code ICC Report 4 3 5 Total Operating Hours Report 4 3 6 Error Log Record 1 4 3 7 i8 Error Log Record 2 4 3 7 Error Log Record 3 4 3 7 Error Log Record 4 4 3 7 11 Error Log Record 5 4 3 7 Error Log Record 6 4 3 7 Error Log Record 7 4 3 7 14 Error Log Record 8 4 3 7 i 137 137 Instrument Identification IID Report 4 3 8 Power Management and Battery Status 4 3 9 19 Persistent Time Sense Report
125. the same stack 1 From the service mode steady state select menu item 21 by rotating the knob until 21 appears in the SpO29 display Press the UPPER ALARM LIMIT button The two left most digits in the PULSE RATE display are the hexadecimal representation of the cluster instrument number H for hexadecimal is displayed as the right most digit of the PULSE RATE display If the displayed value is different than the EEPROM value the display will flash Rotate the knob to adjust the cluster instrument number to the desired value Press the UPPER ALARM LIMIT button to accept the displayed value as the default value The display stops flashing Press the LOWER ALARM LIMIT button to return to the service mode steady state Section 4 Configuration Mode Service Mode and Alarm Active Function 4 3 13 Menu Item 22 Enable Disable Latching Alarms This function allows you to disable or enable the latching alarm feature The Nellcor Puritan Bennett factory default setting is latching alarm disabled 1 From the service mode steady state select menu item 22 by rotating the knob until 22 appears in the SpO2 display Press the UPPER ALARM LIMIT button 2 Observethe enable disable latching alarm setting of DFF or ON in the PULSE RATE display OFF latching alarm disabled ON latching alarm enabled 3 Tochangethe enable disable latching alarm setting rotate the knob until the desired setting is displayed flashi
126. ts to the display board which allows the UIF module to control the monitor display Signals at this connector include power serial dock and data lines button signal and charging battery indicator current Table S4 4 J5 Display Connector Pin Description Input Output Power Power from switch controlled by external watchdog Power from switch controlled by external watchdog Power Seac o FLED dverslatchenable C O pact o onu SN Button voltage o aoo a S 14 Technical Supplement J 2 Connector J 2 connects the UIF board to the monitor speaker Table S4 5 J2 Speaker Connector Pin No Pin Description Mp um Differential speaker uris J 3 Knob connector J 3 allows the U3 controller to detect knob movement Table S4 6 J3 Knob Connector Pin No P Pin Desenpuon Input Output Power 5 we je S4 2 3 SpO 2 Controller The central processing unit CPU for the SpO2 Controller PCB is the U1 microprocessor It contains an 8 channel 10 bit analog to digital converter Six inputs ANALOGO to ANALOG5 are bussed to the analog board interface connector J 4 Of the remaining signals ANALOG6 is connected to Vcc and ANAL OG7 is connected to ground These analog inputs are used during the POST to verify proper operation a CPU Reset Voltage monitor U2 shown in the upper left hand corner of the schematic diagram generates the reset for U
127. tton to return tothe configuration menu steady state Menu item number 4 allows you to select 5 10 or 20 displayed in the SpO 296 display as the default trend format Selecting 20 causes patient trend data to be recorded every 20 seconds Each patient parameter value will be both the maximum and minimum data for each parameter during the sample period Data is stored for the most recent 24 hours of patient monitoring This selection is described as Format 2 in the N 3000 operator s manual Selecting 10 causes patient trend data to be recorded every 10 seconds Each patient parameter value will bethe average of all data samples for each parameter during the sample period Data is stored for the most recent 24 hours of patient monitoring This selection is described as Format 1 in the N 3000 operator s manual 4 2 8 6 4 3 Section 4 Configuration Mode Service Mode and Alarm Active Function Selecting 5 causes patient trend data to be recorded every 5 seconds Each patient parameter value will be the most recent data sample for each parameter during the sample period Data is stored for the most recent 12 hours of patient monitoring This selection is described as Format 3 in the N 3000 operator s manual 1 From the configuration menu steady state rotate the knob until 4 is displayed in the SpO29 6 display Press the UPPER ALARM LIMIT button 2 5 10 or 20 is displayed in the PULSE RATE display Ro
128. will sound and both the SpO 296 and PULSE RATE display will flash indicating both parameters have violated the default alarm limits To silencethe alarm continue with the following paragraph After completing paragraph 3 3 4 1 1 Press and hold the AUDIBLE ALARM OFF button on the top of the monitor The alarm is silenced The PULSE RATE display indicates 60 and the AUXILIARY display indicates SEC while the AUDIBLE ALARM OFF button is pressed Release the AUDIBLE ALARM OFF button Verify the following a Thealarm remains silenced b TheAUDIBLE ALARM OFF indicator lights C TheSpO2 and PULSE RATE displays resume flashing d Thepulsetoneis still audible e Theaudioalarm returns approximately 60 seconds after the AUDIBLE ALARM OFF button is released Press and hold the AUDIBLE ALARM OFF button Rotate the control knob CCW until the PULSE RATE display indicates 30 SEC Rotate the control knob clockwise CW and verify that the displays indicate 60 SEC 90 SEC 120 SEC and OFF Release the button when the display indicates OFF Verify that the AUDIBLE ALARM OFF indicator flashes Wait approximately 3 minutes Verify that the alarm does not return After 3 minutes the alarm silence reminder beeps three times and will continue to do so at 3 minute intervals 37 Section 3 Performance Verification 3 3 4 3 Alarm Volume Control After completing paragraph 3 3 4 2 L 3 Press and hold the AUD

SERVICE MANUAL - Frank`s Hospital Workshop

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