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Accutorr Plus 3.0 Service Manual

1. 4 1 5 0 lt Calibration aaie Sin 5 1 6 0 Preventive Maintenance eere 6 1 On the first page of each chapter a table of contents for that chapter is provided This is a Service Manual for the Accutorr Plus monitor There are no Operating Instructions in this manual Complete operating instructions and listing of available accessories are published in the Accutorr Plus Operating Instructions P N 0070 00 0428 02 English and P N 070 00 0434 5 Languages Foreword This Service Manual P N 0070 00 0543 is intended as a guide for technically qualified personnel to use during repair and calibration procedures for the Accutorr Plus part number 0998 00 0444 X X Notes and Precautions NOTES are a general information statement concerning the Accutorr Plus A CAUTION is provided to alert the user to use special care necessary for the safe and effective use of the device They may include actions to be taken to avoid effects on patients or users that may not be potentially life threatening or result in serious injury but about which the user should be aware Cautions are also provided to alert the user to adverse effects on this device of use or misuse and the care necessary to avoid such effects Please read and adhere to all notes and precautions listed here and in the appropriate areas throughout this manual Accutorr Plus Service Manual 0070 10 0543 V
2. esee 5 4 Test Equipment And Special Tools Required 5 4 Power up Sequence Internal Testing 5 4 Service Diagnostics eese 5 5 Predictive Thermometer Verification And Calibration 5 16 Battery Test For Accutorr Plus eene 5 19 NIBP Normal Operation eeeeeeeeeeeeeneneennne ennt 5 21 Trend Memory Initialization eee 5 21 SpO2 Normal Operation Accutorr Plus model with SpO2 5 22 0070 10 0543 Introduction Calibration 5 1 Introduction The Accutorr Plus is a state of the art device employing digital determination and verification systems to obtain superior performance for the life of the product Most function calibration constants are written into the operating software therefore for the most part there are no means to calibrate or adjust system functions The instrument contains extensive Service Diagnostics that will in most cases isolate a malfunction to the lowest serviceable module NOTE This procedure refers to this instrument as the UUT Unit Under Test All internal verifications and adjustments should be performed with the internal battery disconnected Operate the UUT on the main power supply This will insure a reliable power source for the test as well as providing a measure of safety in case of accidenta
3. 3 5 4 3 Troubleshooting The following table provides suggestions to resolve problems when taking temperature measurements SYMPTOM SUGGESTION Various readings Quick repetitive measurements in the same location can result in when taking a decrease in temperature This can occur because the optical measurements in head of AccuTemp may slightly cool the area Wait a few minutes the same location for the temperature of the area to equilibrate Replace cover and ear or axilla clean lens with an alcohol swab Various readings The patient may by lying down on one ear The measurement of when taking the ear that was down may be a higher temperature Wait a few measurements in minutes for the temperature of the ear canal to equilibrate or use opposite ears opposite ear This is also a factor if the area has been covered for any reason i e hat blanket bandage telephone etc No measurement This can be caused by technique errors Not keeping the button or inaccurate pressed throughout the measurement Not scanning side to side measurements adults and pediatrics Twisting or rotating the probe instead of scanning side to side Not changing the protective optical film cover with each reading Even on the same patient Debris on the lens Not covering the opening of the ear canal Presence of a visible wax plug or dense hair blocking the view into the ear canal This can also be caused by low battery voltage ACCUTEMP ERROR REASO
4. 55 Lock washer 0210 09 0025 56 Hex nut 0220 00 0004 Replacement serial number labels are only provided upon return of the old label with unadulterated serial number clearly visible An identical serial number label will be provided at a nominal cost 0070 10 0543 Accutorr Plus Service Manual Replacement Parts Isometric Drawing Isometric Drawings And Parts List FIGURE NO DESCRIPTION PART NUMBER N S Label rear panel large label with finger caution 0334 00 1510 symbol N S Label Agency approvals and serial number 0334 00 1362 03 Replacement serial number labels are only provided upon return of the old label with unadulterated serial number clearly visible An identical serial number label will be provided at a nominal cost 4 7 1 Front Panel Keyboards And Graphic Panels Selection NOTE When replacing a Keyboard you must replace the Graphic Panel Selection method 1 Identify the type of monitor by referring to the product type the 0998 number found on the rear panel 2 Select the correct keyboard type in the Keyboard column 3 Select the correct graphic overlay from the Graphic Panel column MONITOR MONITOR PART NUMBER KEYBOARD GRAPHIC PANEL CONFIGURATION 0998 00 0444 PART NUMBER PART NUMBER NIBP Trend LCD C51 J51 0331 00 0116 03 0330 00 0027 01 SpO IEC English C61 J61 C71 0331 00 0116 04 J71 C81 J81 NIBP Trend LCD C41 J41
5. NIBP Type BF defibrillation protected applied part SpO Type BF defibrillation protected applied part Protection Against Hazards of Explosion Not protected ordinary Protection Against Ingress of Liquids Not protected ordinary 0070 10 0543 Accutorr Plus Service Manual Specifications 2 3 Size maximum Main Unit Recorder Module Predictive Module Weight 2 4 Operating Temperature Accutorr Plus with or without Recorder Infrared Thermometer Module Predictive Thermometer Module Operating Humidity Shock and Vibration Shipping Storage Temperature Storage Humidity Operating Altitude Accutorr Plus Service Manual 0070 10 0543 Physical Characteristics Physical Characteristics 19 cm W x 26 93 cm H x 20 83 cm D 7 5 W x 10 6 H x 8 2 D 5 33 cm W x 23 cm H x 11 cm D 2 1 W x 9 H x 425 D 5 7 cm W x 15 9 cm H x 11 8 cm D 2 25 W x 6 25 H x 4 63 D 4 95 kg 11 pounds depending on configuration Environmental Characteristics 10 C to 40 C 50 F to 104 F 18 C to 40 C 65 F to 104 F 10 C to 32 C 50 F to 90 F 15 to 90 max non condensing Meets IEC 68 2 27 IEC 68 2 37 Meets ISTA Test Procedure 1A less than 100 Ibs 15 C to 40 C 5 F to 104 F 10 to 95 non condensing 1013 hPa to 782 hPa 0 to 7 000 ft for units with an LCD 1013 hPa to 697 hPa 0 to 10 000 ft for units without an LCD Elect
6. 0070 10 0543 Accutorr Plus Service Manual Theory of Operation Communications Board 1 4 4 Power Supply Module A 15V DC DC Converter is used to supply power to the NIBP section This module is powered by 5V The Power Supply assembly is considered a black box item There are no parts supplied except the AC and DC fuses 1 4 5 Power Requirements VOLTAGE TOLERANCE MAXIMUM CURRENT 5 volts 2 1 5 amps 12 5 volts 5 0 5 amps Standby 8 1V to 17 5V 17mA Accutorr Plus Service Manual 0070 10 0543 1 13 Main Power Supply 1 5 1 5 1 1 5 2 Theory of Operation Main Power Supply There are two distinct power supplies used in the Accutorr Plus They are not interchangeable Our part number 0014 00 0184 is configured for the use and charge of a sealed Lead Acid battery The battery charge profile is unique for this application Our part number 0014 00 0225 is configured for the use and charge of a Lithium Ion battery The following theory of operation applies to both versions with the obvious exception of the battery charging system Description The power supply can operate off the AC power line or an on board battery The circuit selects automatically the best power source with AC power being the default The circuit will operate in the AC power mode and charge the battery at the same time It is also able to operate the Accutorr Plus if there is no battery installed or the battery maybe fully dis
7. 1 Place the Accutorr Plus with the display side down onto a protective surface NOTE Special care should be taken to insure that the front panel and glare screen are not scratched 2 Remove the 4 screws from the corners of the back housing recess and the two screws in the center channel of the rear case Slowly lift the rear housing up and place in a safe location 4 Disconnect battery connector J4 from the Power Supply board 3 6 2 Removal of the Front Bezel 1 Place the front housing with the display side down onto a protective surface 2 Disconnect the SpO ribbon cable J3 from the SpO circuit board and the tubing from the NIBP front panel connector 3 Slowly separate the assembly up and away from the front housing 3 6 3 Removal of the Keyboard Assembly 1 Place the instrument with the display side down onto a protective surface Remove the Front Bezel as described above Remove the screws 4 securing the Keyboard Assembly and lift the keyboard supporting and separating the connector to the LED Tone board 3 6 4 Removal of the LED Tone board 1 Remove front bezel and keyboard Disconnect cable from J4 the speaker connection Remove the four screws holding the circuit board Pull circuit board forward disconnecting the rear J 1 connector 3 10 0070 10 0543 Accutorr Plus Service Manual Repair Information 3 6 5 3 6 6 3 6 7 3 6 8 Disassembly Instructions Removal of the CPU NIBP b
8. 3 7 1 10 Communication Connector J 603 PIN 4 INPUT OUTPUT DESCRIPTION NAME 1 Output 12VDC 5 100mA TR_PWR 2 N C 3 Input RS 232 or RS 485 RXD 4 Input RS 232 RTS 5 Output RS 232 or RS 485 TXD 6 Output RS 232 CTS 7 Output 9 Vdc min Nurse_Call 8 Output Ground DGND 9 Output Ground DGND 10 N C 11 Output Ground DGND 12 Output Ground DGND 13 Output RS 232 Receive EXT_RXD 14 Input RS 232 Transmit EXT_TXD 3 7 1 11 LCD Connector J 8 PIN INPUT OUTPUT DESCRIPTION NAME Out Chassis Ground CHASSIS 2 Out ground DGND 3 Out 5V supply 5 VCC 4 Out View angle control 15V max VEE Accutorr Plus Service Manual 0070 10 0543 Interconnect Cables Run List 3 7 2 3 7 2 1 Repair Information PIN INPUT OUTPUT DESCRIPTION NAME 5 Out TTL control line WR_LCD 6 Out TTL control line RD_LCD 7 Out TTL control line CS_LCD 8 Out TTL address line A lt 1 gt 9 Out ground DGND 10 Out TTL LCD reset RESET 11 Out TTL data line Buffered Data Bus D lt 0 gt 12 Out TTL data line Buffered Data Bus D lt 1 gt 13 Out TTL data line Buffered Data Bus D lt 2 gt 14 Out TTL data line Buffered Data Bus D lt 3 gt 15 Input TTL data line Buffered Data Bus D lt 4 gt 16 Out TTL data line Buffered Data Bus D lt 5 gt 17 Out TTL data line Buffered Data Bus D lt 6 gt 18 Out TTL data line Buffered Data Bus D lt 7
9. Introduction vi Notes NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE Notes See the serial and product number label on the rear panel of the unit for part number identification This manual also includes information on the optional Recorder and Predictive Temperature Modules and Infrared Temperature module This manual does not provide operating instructions Consult the Operating Instructions Manual for proper operation of this monitor Unauthorized servicing may void the remainder of the warranty Check with the factory or witha local authorized representative to determine the warranty status of a particular instrument Do not change Room Number and or Bed Letter on the Accutorr Plus during the transmission of temperature data The AccuTemp thermometer should be at room temperature when it is used If it has been ina very warm or very cold environment it may need time for the thermometer temperature to equalize to ambient temperature Special care should be taken to insure that the front panel and glare screen are not scratched New batteries are shipped in a discharged state for safety reasons A new battery must be charged for 2 hours for Li lon or 8 hours for Sealed Lead Acid Battery before first use The monitor may be used with AC mains power during the charge cycle but battery operation could be limited during this time Never re install an AC recepta
10. R 504 Pressure Adjust R 540 FIGURE 5 4 5 5 17 Battery Selection 13 This section will allow the user to configure the unit for a Sealed Lead Acid or Lithium Ion battery 1 Select diagnostic test Room 13 2 Press the Start NIBP to enable the selection process The pump will NOT start up 3 The Diastolic display will show the currently configured battery type Sealed Lead Acid will be represented by La and Lithium Ion will be represented by Li 4 Using the Patient Info UP DOWN ARROW keys select the appropriate battery type Press the DEFLATE key to confirm your choice If the DEFLATE key is not pressed the change will not take effect Accutorr Plus Service Manual 0070 10 0543 5 15 Predictive Thermometer Verification And Calibration Calibration 5 6 Predictive Thermometer Verification And Calibration The Water Bath Method utilizes laboratory grade stirred water bath to confirm that the PTM is operating within the specified limits In case of failure or inaccuracy of readings the System Calibration Procedure may be followed to re adjust the device to factory specifications This procedure requires high accuracy test equipment and therefore it is not recommended for field calibration Mindray DS USA Inc offers a comprehensive factory service program to support this product 5 6 1 Water Bath Method 1 Prepare a water bath set to 89 6 to 110 0 F as a temperature reference Confirm tempera
11. The systolic diastolic and mean pressures are then calculated in accordance with company standard algorithms A fair amount of data manipulation and computation is required in the parameter determination The results are reported no more than one second from the termination of the pulse acquisition phase Major Hardware Components CPU A microcontroller min 16Mhz with three 3 serial communications controllers SCC a serial communication port SCP programmable chip select lines to minimize glue logic a IDMA controller and parallel I O ports for discrete signals Flash Memory 512K x 16 Flash Rom used for program storage and execution A Flash Rom is used also for downloading new revisions of software via the CPU s serial I O lines SCC Battery Backed Up Static RAM 512K x 16 static ram is used for data storage trend information etc This memory is used for data storage therefore a battery back up is provided Nonvolatile RAM 2K x 8 nonvolatile ram is used for configuration and serial number information This memory requires a battery back up 0070 10 0543 Accutorr Plus Service Manual Theory of Operation Theory of Operation CPU NIBP Module Assembly with LCD Display 1 2 4 5 Micromanager This device provides a number of features which are useful for management of this board They are listed as follows A On Off capability through keyboard control B Watchdog timer C Conversion of CMOS SRAM to pseudo nonvola
12. real time system pressure in the MAP display For this test the software over pressure monitor is disabled On completion the MAP display indicates the maximum pressure reached and the Patient Bed Letter Display indicates if the over pressure sensor was activated 00 or not FF Pressing the DEFLATE key at any time during the test causes the NIBP module to open all valves and ends the test Following each over pressure hardware test the UUT must be turned off in order to re enable the pump Table 5 7 TARGET PUMP TEST ROOM SUB TEST PATIENT TEST SIZE MODE PRESSURE MMHG NUMBER BED LETTER Low 157 5 8 a Medium 210 10 8 b High 315 15 8 c 5 5 10 Pulse Channel DC Offset Test 9a 9b 9c Select Room Number and Bed Letter per Table 5 8 on page 5 11 and press the NIBP START key to activate the test This test measures the DC offset for each of the three electronic gain settings available on the pulse channel Results for each gain setting are displayed in the Timer Temperature display in Volts Table 5 8 on page 5 11 describes the tests performed Table 5 8 ACCEPTABLE TEST ROOM SUB TEST PATIENT TEST DESCRIPTION LIMIT V NUMBER BED LETTER Gain 1 Low Test 1 50 to 1 83 9 a Gain 2 Med Test 1 50 to 1 83 9 b Gain 3 High Test 1 50 to 1 83 9 c Accutorr Plus Service Manual 0070 10 0543 5 11 Service Diagnostics 5 5 11 5 5 12 5 12 Calibration Pulse Channel Average Noise Test 10a 10b 10c Select Ro
13. 0331 00 0116 02 0330 00 0026 01 IEC English NIBP only IEC C31 J31 0331 00 0116 01 0330 00 0025 01 English NIBP Trend LCD C52 J52 0331 00 0116 03 0330 00 0027 02 SpO IEC German C62 J62 C72 0331 00 0116 04 J72 C82 J82 NIBP Trend LCD C42 J42 0331 00 0116 02 0330 00 0026 02 IEC German NIBP only IEC C32 J32 0331 00 0116 01 0330 00 0025 02 German NIBP Trend LCD C53 J53 0331 00 0116 03 0330 00 0027 03 SpO IEC Spanish C63 J63 C73 0331 00 0116 04 J73 C83 J83 NIBP Trend LCD C43 J43 0331 00 0116 02 0330 00 0026 03 IEC Spanish NIBP only IEC C33 J33 0331 00 0116 01 0330 00 0025 03 Spanish NIBP Trend LCD C54 J54 0331 00 0116 03 0330 00 0027 04 SpO IEC French C64 J64 C74 0331 00 0116 04 J74 C84 J84 Accutorr Plus Service Manual 0070 10 0543 Isometric Drawings And Parts List 4 10 MONITOR CONFIGURATION MONITOR PART NUMBER 0998 00 0444 Replacement Parts Isometric Drawing KEYBOARD PART NUMBER GRAPHIC PANEL PART NUMBER NIBP Trend LCD C44 J44 0331 00 0116 02 0330 00 0026 04 IEC French NIBP only IEC C34 J34 0331 00 0116 01 0330 00 0025 04 French NIBP Trend LCD C56 J56 0331 00 0116 03 0330 00 0027 06 SpO IEC Italian C66 J66 C76 0331 00 0116 04 J76 C86 J86 NIBP Trend LCD C46 J46 0331 00 0116 02 0330 00 0026 06 IEC Italian NIBP only C36 J36 0331 00 0116 01 0330 00 0025 06 IEC Italian NIBP Trend LCD C57 J57
14. 10 0543 Troubleshooting Problem Isolation TYPE SYSTEM Repair Information CODE DESCRIPTION REASON 984 NIBP Hardware Failure NIBP A D failure detected 985 NIBP Overpressure The overpressure circuit is not set Circuit not Programmed to the current patient size 986 NIBP Overpressure The two pressure transducers are Circuit not Tracking not tracking each other 987 Stop Hardware Excessive cuff pressure detected Overpressure by hardware over pressure sensor A triple beep tone is generated 988 TEMP Bad Calibration Thermometer needs calibration 990 TEMP Illegal Mode Thermometer switch is set wrong 991 TEMP Module Failed Thermometer internal failure 995 SpO Uncalibrated SpO fails calibration check 996 SpO Failure SpO failed self test 3 5 1 Isolating the Problem System Level 1 Determine if the problem is in the main NIBP unit or one of the add on accessories 2 If the problem is in the accessory replace the 9 Volt battery in the temperature module if equipped nd check the recorder unit for correct paper correct installation and paper jams 3 Ifthe problem is in the main NIBP and or SpO section rule out these simple problems first If AC power is available then the green LED adjacent to the front panel ON OFF keys should be illuminated If not connect the power cord to live power outlet If green LED fails to illuminate there is a probable power supply malfunction Check
15. 5 15 Main Pressure Transducer Calibration on page 5 14 9 Press the DEFLATE key to release the pressure and exit the test 5 5 13 Verification of Accutorr Plus Pneumatic Performance using the Cufflink NIBP Simulator 11d Select Room Number 11 and Bed Letter d and press the NIBP START key to activate the test For these tests program the Cufflink NIBP simulator to perform the desired test Instead of pumping up the cuff this test uses the Cufflink simulator to verify the Accutorr pressure reading for the NIBP Leak Test Over Pressure test and the Main Pressure Transducer Verification Test The Accutorr displays the pressure in the MAP display Pressing the DEFLATE key at any time during the test causes the NIBP module to open all valves and ends the test Pressing and holding the DEFLATE key for three seconds clears the MAP display and exits test The Cufflink simulator must be exited separately NOTE The reading and setting accuracy will be dependent on the accuracy of the Cufflink calibration and the Accutorr Plus condition The Cufflink standard dynamic pressure simulation may produce Systolic Mean Diastolic read outs on the Accutorr Plus outside of the specified limits The pressure simulation results may not be accepted as a measure of the Accutorr Plus clinical performance 5 5 14 Over pressure Transducer Verification lt 12c 12a 12b This test verifies that the over pressure transducer is calibrated correctly
16. 8 1 uooiis Buiqny 49H eui uj Dunnoi S SoH oneuineud dgIN umoUs 1ou Accutorr Plus Service Manual 0070 10 0543 3 22 a0 Replacement Parts Isometric Drawing AT Introd clion eere Ert 4 1 4 2 Available Replacement Parts And Sub Assemblies 4 1 4 3 Product Variations And Options essere 4 1 4 4 Exchange Program esee nnne nnne nnn 4 2 4 5 Replacement Parts Pricing Information 4 2 4 6 Ordering Information eeeeseseeeeeeeeeeeeeee nennen nennen 4 3 4 7 Isometric Drawings And Parts List seess 4 7 4 1 Introduction This chapter of the Service Manual provides information necessary to identify the replacement parts and assemblies of the instrument 4 2 Available Replacement Parts And Sub Assemblies The parts listings which follow are divided into two sections The Isometric Drawings and the accompanying parts lists identify the available chassis mounted components 4 3 Product Variations And Options Product variations due to differences for various line voltages options and languages may require different components These variations are reflected where necessary on the parts lists Accutorr Plus Service Manual 0070 10 0543 Exchange Program 4 4 4 5 Replacement Parts Isometric Drawing Exchange Program An
17. Accutorr Plus 3 5 0 1 Error Codes TYPE CODE DESCRIPTION REASON NIBP 8810 Retry Unable to Measure Motion artifact cycle time out weak pulsations or no pulsations A triple beep tone is generated 8811 Retry Pump Higher Insufficient cuff pressure A triple beep tone is generated 8812 Stop Cuff Overpressure Excessive cuff pressure detected by the software A triple beep tone is generated 8813 Stop Unable to Measure 4 successive measurement attempts failed A triple beep tone is generated TEMP 8830 Check Probe Tissue contact may have been PTM lost 8831 Replace Probe Defective probe or connection 8832 Battery Low The 9V battery needs replacement SpOs 8850 No Sensor No sensor connected 8851 Sensor Off Sensor not on patient Masimo SpO only 8852 Interference Interference on signal Masimo SpO only 8853 Pulse Search Unit cannot find signal Nellcor SpO Module will report Pulse Search 8853 when the sensor is not on the patient 8854 Weak Pulse Weak pulse detected Masimo SpO only 8856 Check Sensor Sensor problem Masimo SpO only 8857 PR lt 21 Pulse rate is less than 21 bpm Nellcor SpO only 8857 PR 26 Pulse rate is less than 26 bpm Masimo SpO only 8858 PR gt 249 Pulse rate is greater than 249 bpm Nellcor SpO only 8858 PR gt 239 Pulse rate is greater than 239 bpm Masimo SpO only Accutorr Plus Service Manual 0070
18. CONTROL K SEGISTER svoznst y gt gt KEY D0 D7 Ares S LCb REF gt LCb ANGLE fh cuncorr gt LCD ANGLE gt gt CONFIG D DAMPED D0 D7 status SPO2 ay ke REGULATOR A DAMPED A1 AT yu rents uc POWER ON OFF HL Low ero HV fio em LATCH sv eror orr K asy sPO2_OPTI le lt 7 r BATTERY le BACKUP stow gt CONTROL c srozrsr EA RIC 2 FROM OVER PRESSURE OVER PRESSURE BUS NVRAM POWER SUPPLY COMPARATOR 9 LATCH STDBY on 2 cuncorg POLAR SFO AX SRAM p v lt Y guy gt lt SV TO Q507 PUMP CONTROL gt PB CPU FLASH asy MEMORY 68302 MICROCONTROLLER CENTRAL STATION Vcc SERIAL PORT DSCILLATOR csi 16 00 MHz 5 s Y 5 peme NCALL Converter RXD3 TXD3 RS232ENB TXDI RXDI CDi CTS1 gt A Br RxD TEMPERATURE CONNECTOR Y Y 2n SEA Ed RS232 m Transceiver k TEMP RXD gt 03 TEMP_TXD NCALL CTS TXb RIS RXD PROTECTION X ARRAY x CSTAT RS485 gt TRANSCEIVER 04 FIGURE 1 1 CPU NIBP Board Functional Diagram 1 8 0070 10 0543 Accutorr Plus Service Manual Theory of Operation SpO Processor Circuit Boards 1 3 SpO Processor Circuit Boards There are three distinct technologies offered as options The option is selected at the time of manufacture and it is fixed for the life of the product The selected technology uses proprietary sensors and interface cables There are no adapters possible or available The available sele
19. Calibration is checked in the Low level pressure mode so that the limit displayed in the MAP window should say 158 mmHg 1 If it does not the transducer needs to be calibrated by proceeding to 5 5 16 Over pressure Transducer Calibration on page 5 14 The over pressure transducer should also be verified in the High and Mid level pressure modes 1 Select diagnostic test 12 Room a Bed Low Limit 2 Press the START NIBP key to start the test 3 Verify that the over pressure value displayed in the MAP LEDs is 158 mmHg 1 4 Repeat steps 1 through 3 but select test 12 c to check over pressure limit 315 mmHg 15 and test 12 b for Mid level over pressure limit 210 mmHg 10 5 Press the DEFLATE key to exit this test Accutorr Plus Service Manual 0070 10 0543 5 13 Service Diagnostics Calibration 5 5 15 Main Pressure Transducer Calibration NOTE This procedure should only be performed in the event that there was a failure in 5 5 12 Main Pressure Transducer Verification Test 11a 11b 11c on page 5 12 This is the procedure for calibrating the main pressure transducer in the event that there is a disagreement between the UUT and the external pressure gauge in the proceeding test The device is calibrated by comparison with the Cufflink simulator at 158 mmHg 1 and then by adjusting R540 on the 0670 00 1143 PCB 1 Connect the Cufflink simulator to the Accutorr Plus cuff connec
20. Do not attempt to un solder welded components from the circuit board the circuit board will be permanently damaged Soldering and solder removal equipment must be low voltage operated and grounded to avoid static charge and stray current induced component damage Maximum wattage 25 W The Inside Of This Instrument Contains Static Sensitive Components Use correct static protection safeguards This publication may have been updated to reflect product design changes and or manual improvements Any such changes to this manual would be accomplished by supplying replacement pages and instructions for inserting or affixing them into the manual 0070 10 0543 Accutorr Plus Service Manual 19 Theory of Operation 1 1 Major Functional Blocks of the Accutorr Plus 1 2 CPU NIBP Module Assembly with LCD Display 1 3 SpO2 Processor Circuit Boards sese 1 4 Communications Board eeeceeeee eene eseeee nene n nnn nnn 1 5 Main Power Supply eeeeeseeeeneeeeee ener nnne nnn 1 6 LED and Tone Module eeeeee eee creer eeeene enne This section of the manual explains the basic architecture of the Accutorr Plus It is an overview not a detailed circuit analysis It is intended to be a tool that if used properly will lead to an understanding of the functions executed by a major functional block and thus
21. Panels Selection sese 4 9 Recorder Module Isometric Parts List esses enne entente nennen 4 12 Predictive Temperature Module Isometric Parts List ces cescecscceessceeeeceseceseeceneeceeceeeeceneecaeeeetenes 4 14 Mobile Stand Type 2 Black Base Assembly Parts List 4 16 Accutorr Plus Service Manual 0070 10 0543 iii Table of Contents Mountings Options sc een eG UENIRE RR Erde iem PORE 4 16 Calibra iom ME 5 1 Introduction EET 5 2 Status and Error Code Table icit epe ere cete tee pecie eco epe ings 5 2 Error Codes ene c etes perierit eie eie bg creat 5 2 Precautions And Guidelifies te oe d pe ca baden tta 5 4 Test Equipment And Special Tools Required esessseseeeee eee nennen ene 5 4 Power up Sequence Internal Testing sees enne etre nennen nennen neret 5 4 Service Diagnostics etre te IRURE DET RU DRE REO RD ER SEE HRS 5 5 Introduction Hidden Key yiee hierie erii en qa e e e Gets Deer ee iege ep teen 5 5 Software Version Test Oa Ob esesssssssessseesesseeee eene enne ener rnnt nnne erre e nennen 5 5 Keypad Test eon eee ERROR ERREUR 5 7 LED Test O EA nD AEE AE EO eerte e DERNE i E e EO eee re TEET 5 8 Communications Test 3a 3b cccecessecesseceseccecesneceseaeecsesceecsseeessseeecsesececneeecnsaeeecsaeecesessenesneeesenes 5 8 Recorder Test 4D c i ice treu era met ue tete dl een el e
22. Plus Service Manual Replacement Parts Isometric Drawing Isometric Drawings And Parts List 4 7 Isometric Drawings And Parts List The following item numbers are not used in this parts list 18 21 22 23 24 25 29 31 32 33 34 35 36 39 43 44 45 and 53 FIGURE NO DESCRIPTION PART NUMBER 1 Pressure connector 0103 00 0411 2 Bezel front 0380 00 0359 04 2A Bezel front Nellcor MP304 0380 00 0359 05 2B Bezel front with or without Masimo oximeter 0380 00 0359 06 2C Bezel front Nellcor MP506 0380 00 0359 08 3 SpO connector assembly 0012 00 1223 3A SpO connector assembly Nellcor MP304 0012 00 1222 01 3B SpO connector assembly Masimo 0012 00 1344 3C SpO connector assembly Nellcor MP506 0012 00 1463 4 Keypad without graphic panels See Table 4A Graphic panels must be replaced with keypad See Table 5 LCD display with backlite 0160 00 0062 6 Interface cable download phone jack 0012 00 1401 7 Interface cable for LCD 0012 00 1402 8 LED display circuit board for units with SpO option 0670 00 0727 01 8A LED display circuit board for units without SpO 0670 00 0727 02 option 9 Interface cable SpO to CPU all SpO options 0012 00 1403 10 Mounting screws for 9 pin Interface connector 0361 00 0164 11 Speaker with cable 0012 00 0257 05 12 LCD support brackets left or right 0406 00 0755 14 Label fr
23. Supply Board Serial No XXXX XX 2 ea P N 0212 12 0404 Screw 4 40 x 25 lg Pan Head Serial No XXXX XX NOTE Mindray DS USA Inc maintains a policy of continuous development for product improvement and reserves the right to change materials specifications and prices without notice Many components are described with sufficient detail to permit procurement through local commercial channels This applies to hardware such as screws and fasteners as well as to certain electronic components such as resistors capacitors certain integrated circuits and transistors In some cases components are selected to meet special performance criteria above and beyond the component manufactures specifications This may apply to solid state components relays and batteries The use of other than approved components in these applications may result in degradation of reliability or instrument performance Accutorr Plus Service Manual 0070 10 0543 4 3 Ordering Information Replacement Parts Isometric Drawing This page intentionally left blank 0070 10 0543 Accutorr Plus Service Manual Replacement Parts Isometric Drawing Ordering Information 2 FIGURE 4 1 Isometric Drawing Accutorr Plus Models TE Accutorr Plus Service Manual 0070 10 0543 4 5 Replacement Parts Isometric Drawing Ordering Information This page intentionally left blank 4 6 0070 10 0543 Accutorr
24. and within specifications e Non invasive blood pressure section is functional within specifications e SpO functions are operational and within specification Temperature functions are operational and within specifications Check the temperature module battery voltage under load replace if under 8 8 V Use only alkaline batteries NOTE Newer PTM modules do not contain a 9V battery Recorder is functional and documents available stored data e Check recorder paper path and clean as required Error codes failure messages end user reported anomalies are collected and analyzed for reduced performance trends Identify and correct causes as warranted e Perform ground resistance and chassis leakage tests Accutorr Plus Service Manual 0070 10 0543 6 3 0070 10 0543 REV N July 12 2010
25. are for use by qualified technical personnel only A comprehensive selection of Technical Training Seminars for this and other products is available Contact the Registrar Technical Support Department or your regional sales or service representative for course offerings and dates Accutorr Plus Service Manual 0070 10 0543 3 1 Safety Precautions Repair Information 3 2 Safety Precautions There are areas where improper repair techniques will cause further damage When the instrument covers are removed observe the following precautions and guidelines 1 Power line voltages will be exposed identify hazard points and avoid direct contact 2 Battery terminals are accessible do not short to each other or the positive terminal to ground circuits as the capacity of the battery is sufficient to create an over heating safety hazard 3 Fuses must not be by passed or replaced by different current voltage or time delay ratings 4 The circuit boards contain static sensitive components use proper static safeguard techniques CAUTION Li lon batteries are intended for replacement by qualified service personnel only CAUTION Li lon batteries used in this device may present a risk of fire or chemical burn if mistreated Do not disassemble heat above 100 C 212 F or incinerate Replace battery with P N 0146 00 0069 only Use of another battery may present a risk of fire or explosion CAUTION Dispose of used battery promptly Keep
26. away from children Do not disassemble and do not dispose of in fire 3 2 0070 10 0543 Accutorr Plus Service Manual Repair Information General Troubleshooting Guidelines 3 3 General Troubleshooting Guidelines This procedure does not cover all possible problems The intent of troubleshooting is to provide quick isolation and remedy of malfunctions and to return the instrument promptly to safe patient care A logical approach will quickly identify the problem and suggest cost effective solutions 3 3 1 Troubleshooting Tips 1 Isolate the cause of the problem to be either clinical instrument or external If a clinical cause is suspected take the physiological measurement by a manual method or use an alternate measuring device Check the physiological value against the instrument specifications if exceeds specification continue with manual or alternate method If a problem with the instrument is suspected first examine and or replace patient connected accessories Check instrument set up configuration Ensure the correct battery charge profile is selected for the installed battery If all set ups are OK replace instrument with similar device If the environment is suspected observe if the malfunction coincides with other equipment cycling especially high power motors RF generators etc Replace problem instrument with an identical substitute Place the problem instrument in a low disturbance environment If the problem p
27. c soe Ue eiit tonne iecit cie EON 3 19 Backlight Connector J 651 ineo nseeni E SAEs EE hee e ter erp 3 19 Communication Connector J 603 cccccccsecccccccsssceececsessceceeceesscececesessaeeeceseneaeeeeceseseeeeeeseaees 3 19 LC D Conreector J28 555 ee e rc reto ead eS PD ROB 3 19 Power Supply Connectors Sees ec dece ee d eec der e crit tei te een iine 3 20 ACanput connector J 2 nis cnt eire eH RUE RR RR p ee Eel b orte e oe 3 20 DC output connector J 3 oie eea e a e E E E E O N ES TN Sis 3 21 Battery connector J 4 2s eie t cette entrare Pape EA EE dic eo 3 21 Pneumatic Connections Diagram eseeeeeseseeeee eee en eren en treten teet ee nre ne nene nennen 3 22 Replacement Parts Isometric Drawing 4 eerie eese eese etes netu a tns ta tns ta tne ta tns tatus tatus tatnen sns tn tn ao 4 1 Hin 4 1 Available Replacement Parts And Sub Assemblies 00 0 0 cece cseeseeseceseceeceseeeeceseeeceeeeseseaeeseeeneesaesaees 4 1 Product Variations And Options ea deeper rhe Feet veces eere eis 4 1 Exchange Program eee Ehe epe Dok aie ee 4 2 Replacement Parts Pricing Information eeeseeeseseeeeseeee ener nennen nnne ener enne senten nter ter enn 4 2 Ordering Information 5 2 nae ipe ORE Ee Ue e p E pO RO PO EE REUS 4 3 Isometric Drawings And Parts List ette ee rer erae teh ere ene a ER eve ene e eine teen iea 4 7 Front Panel Keyboards And Graphic
28. cut off frequency of 1hz and an upper cut off frequency of 10Hz will pass all frequencies between 1hz and 10Hz and reject frequencies below 1hz and above 10Hz Therefore any noise that has a frequency outside the pass band is rejected and not considered i e 120Hz due to room light and 60Hz noise from electrical lines However if noise exists between the pass band of 1hz and 10Hz it will enter the system with the desired signal and corrupt the measurement i e patient motion at 2Hz Fixed filters will always have this limitation Masimo has overcome these problems by developing a novel technique to accurately determine the noise reference patents issued and pending thus making adaptive filters work in real time even when applied to medical monitoring of widely variable and unpredictable patients With this new technique Masimo is able to solve the perennial problem of motion artifact in pulse oximetry Further technical information is available from Masimo on the Internet at www Masimo com 1 3 7 Masimo Interface Board Theory of Operation The Accutorr Plus Masimo interface board P N 0670 00 0716 provides an isolated data and power interface between the Accutorr Plus and the Masimo MP 3 Pulse Oximetry Module The patient isolation requirement for the Masimo section is 1500VAC less than or equal to 1mA leakage current from input connectors J1 and J4 all terminals to J2 all terminals The isolated DC DC converter
29. exchange policy for most of the printed circuit board assemblies is available This program may provide the most expedient method of servicing the equipment A standard charge for this service is made Contact the Service Department for details concerning this exchange program Many circuit boards make extensive use of multi layer technology and high density packaging Individual component replacement is not recommended on these boards unless the technician is properly equipped to repair multi layer circuit boards Circuit boards returned as parts of the exchange program that show evidence of improper repair techniques and are damaged in the process are not considered for exchange Damaged boards will be invoiced at full value and no exchange credit will be applied Replacement Parts Pricing Information Current parts prices and exchange charges can be determined by contacting the Order Entry Department 0070 10 0543 Accutorr Plus Service Manual Replacement Parts Isometric Drawing Ordering Information 4 6 Ordering Information Replacement parts and assemblies are available from Mindray DS USA Inc Please follow these guidelines when ordering replacement items for the instrument 1 Include the Model and Serial Number of the instrument 2 Include the Part Number exactly as it appears in the Parts List under the column Part Number 3 Include a description of the item Example Orders 1 ea P N 0014 00 0184 Main Power
30. explained in the operating instructions 3 5 3 Isolating the Problems with Optional Accessory Modules 1 Predictive Temperature Module Test Obtain one or more temperature readings from the optional temperature modules They will be displayed in the temperature display window If the readings are not displayed replace the temperature probe first then the complete module 2 Infrared Accutemp I R temperature module test The following paragraphs will assist you to separate those clinical issues that can result in inaccurate or inconsistent readings as well as instrument malfunctions Since there are no user serviceable components except 9V battery inside the Accutemp I R all service requests should be directed to the factory 3 Recorder Module Test Obtain a print out of stored data or perform diagnostics test 4 to verify printer integrity Substitute printer with a know good device to confirm diagnosis 3 5 4 Clinical Issues 3 5 4 1 Multiple Temperature Measurements The AccuTemp employs an easy and quick method to taking temperature measurements Because of this it is tempting to take immediate repetitive measurements However taking immediate repetitive measurements in the same ear may result in a decrease in temperature This is because the probe of an ear thermometer is cooler than the ear canal and will draw the heat from the ear canal cooling the canal slightly Waiting a few minutes before taking another temperature
31. formula resulting in a final calculated values of 99 9 to 101 9 F With a display resolution of 1 digit and an over all resolution of 0 2 F the final calculated reading may fall between 98 6 and 102 2 Low Battery Sensing The low battery threshold is not adjustable When the battery has reached the low battery threshold U4 and Q2 on the power supply report this condition to the CPU on the Accutorr Plus 0070 10 0543 Accutorr Plus Service Manual Calibration Battery Test For Accutorr Plus 5 7 Battery Test For Accutorr Plus NOTE During this test the real time clock will reset 1 Disconnect the cable from the battery and remove the AC power cord from the UUT Connect the power supply positive output to the battery cable positive terminal and the negative power supply terminal to the negative terminal of the battery cable Set the power supply voltage to 14 5 1 volts for SLA battery 12 5 1 volts for Li Ion battery 2 Press the ON STANDBY key to power up UUT Verify that the normal power up sequence as described in this document occurs and that the indicator for the battery symbol on the keypad is lit 5 7 1 Low Battery Indicator and Low Battery Cut Off CAUTION During this test the real time clock will be reset and any Trend information will be lost Temporary user preference settings will also be erased Power Supply requirement the power source used for testing needs to source 0 to 15 VDC and able to wit
32. gt 19 Out ground DGND 20 Out 5V supply 5 VCC 21 Out TTL Level Buffered address Bus A lt 3 gt 22 Out TTL Level Buffered address Bus A lt 4 gt 23 Out TTL Level DSP_CONT 24 Out TTL Level Buffered address Bus A lt 5 gt 25 Out 15VDC 415VF 26 Out 15 VDC 15VF Power Supply Connectors AC input connector J 2 PIN FUNCTION PIN FUNCTION 1 AC Ground 4 N C pin removed 2 N C pin removed 5 AC Hot 3 AC Neutral 0070 10 0543 Accutorr Plus Service Manual Repair Information Interconnect Cables Run List 3 7 2 2 DC output connector J 3 PIN FUNCTION PIN FUNCTION 45V 8 Qommn 2 45V 9 412 5 V 3 Common 10 STDBY 4 Common 11 ACON 5 15V 12 12 150N 6 15V 13 OFF ON 7 Common 14 CHRGOFF 3 7 2 3 Battery connector J 4 Connector Pin Out PIN 1 CONNECTION Battery Thermistor No Connection No Connection oy AJOJN Battery Accutorr Plus Service Manual 0070 10 0543 Repair Information Pneumatic Connections Diagram Pneumatic Connections Diagram 3 8 Bul yeuUuOd xXoinb Jeuued 1uoJj 01 esoH pononnnnnonnananna Jeonpsuej eanssed 4900 amman 9AJEA jueuioJnseoui Jaonpsue jeuoniodoujg re juawainseayy v000 20 8 0 isnipy ch 1 eui uj eJnssaeJg isnipy d O eA eA dunq gum i 9020 01 8000 I 91 1 uooyis Buiqny e 1000 20 84 0 TAS 80t0 01 9000 dI
33. voltage Connection for the download three wire RS 485 interface Signal driver for an external isolated relay that will be used for Nurse Call future function provided on pins of the 9 pin RS 232 connector 1 2 4 10 LCD Display DAC control provided from the LED Tone Board controls the LCD View Angle Accutorr Plus Service Manual 0070 10 0543 1 7 CPU NIBP Module Assembly with LCD Display Theory of Operation 1 2 4 11 1 2 4 12 1 2 4 13 EL Power Module The power module generates the required AC power signal for the EL Panel LCD backlight using the system 12V DC 12 5V nominal A means to allow the host the option of disabling the power source is also required to increase battery life Temperature Interface The board provides a Serial Interface to either Temperature module SpO Interface The board provides a Serial Interface to SPO and reset control of the module LCD RECORDER on HOME lt vec DREQ lt lt WR LCD WR RECD I AD Lcp RUNE d hg CS LCD cbr A pamen A245 RESET gt D_DAMPED Yeeusve gt DAMPED D D7 TRI STATE D ID DAMPED D0 D7 TRANSCEIVER LED TONE PCB CONNECTOR vee CLKO resource
34. 0331 00 0116 03 0330 00 0027 07 SpO IEC Swedish C67 J67 C77 0331 00 0116 04 J77 C87 J87 NIBP Trend LCD C47 J47 0331 00 0116 02 0330 00 0026 07 IEC Swedish NIBP only IEC C37 J37 0331 00 0116 01 0330 00 0025 07 Swedish 0070 10 0543 Accutorr Plus Service Manual Replacement Parts Isometric Drawing Isometric Drawings And Parts List FIGURE 4 2 Isometric Drawing Recorder Module Accutorr Plus Service Manual 0070 10 0543 4 11 Isometric Drawings And Parts List 4 7 2 Recorder Module Isometric Parts List Replacement Parts Isometric Drawing FIGURE NO DESCRIPTION PART NUMBER 1 Chart Paper Door 0380 00 0274 2 Chart Cutter 0380 00 0275 3 Recorder Main Housing 0380 00 0273 01 4 Printer Assembly w printhead 0161 00 0015 5 Circuit Board Includes Printer 0670 00 0583 02 6 Plastic Shield Anti Static 0349 00 0251 N S Label Serial Number 0334 00 1304 N S Label Recorder Paper Replacement 0334 00 1435 N S Captive Screw for Mounting 0217 02 0003 N S Captive Washer for Above 0221 00 0121 N Sare items not shown on drawing 0070 10 0543 Accutorr Plus Service Manual Replacement Parts Isometric Drawing Lo Accutorr Plus Service Manual 0070 10 0543 Isometric Drawings And Parts List FIGURE 4 3 Isometric Drawing Predictive Temperature Module Isometric Drawings And Parts List 4 7 3 Replacement Parts Isometric Drawing Predict
35. 3 3 dro bleshootimng LIPS ERO RE eee UR ase b nec eltesteimitecers 3 3 Exchange Program ee RURSUS t ate ret eie ri E bs 3 3 Test Equipment Required i n pet o e eh e ate ee e tec e ee ees 3 4 Troubleshooting Problem Isolation sese eeeeeeene eene enne nennen nenne enne tenen rentre nenne 3 5 Error Codes etie deer E Oe mte Olei de E ied 3 5 Isolating the Problem System Level seseseeeseseeeeee teen enne erinnerte nenne 3 6 Isolating the Problem within the Main Unit sese 3 7 Isolating the Problems with Optional Accessory Modules seen 3 7 Clinical Issues 5 iiri tad c e cedi a Pes ie tei be IR e S oS 3 7 Multiple Temperature Measurements eese ener eene nennen nennen 3 7 ii 0070 10 0543 Accutorr Plus Service Manual Table of Contents How the AccuTemp Measures Arterial Temperature Adults Pediatrics 3 8 Troubleshooting ssn eee ae een eek e rt ee ne eR aa 3 9 Maintenance M 3 9 Disassembly Tnstructions iie pee pte itetepeetenele pi mee op CUIRE 3 10 Removal of the Rear Housing essent enne trennen rete etr entren ee tente nennens 3 10 Removal of the Front Bezel oie teet e ege e p EE ede p ee poete 3 10 Removal of the Keyboard Assembly sese ene en rennen entente 3 10 Removal of the LED Tone board eese tete o tu rte ipee beers 3 10
36. 37a Cable and filters for pump with quick connect term 0012 00 1405 37b Insulator pump connector 0349 00 03 14 38 Plastic push fasteners for Nellcor SpO shield 0344 00 0242 38a Plastic push fasteners for Masimo SpO shield 0344 00 0249 40 SpO circuit board Mindray DS 0670 00 0593 03 40A SpO circuit board Nellcor MP304 OEM 0671 00 0162 40B Interface board for Nellcor SpO 0670 00 0675 40C SpO circuit board Masimo OEM 0671 00 0055 40D Interface board for Masimo SpO 0670 00 0716 40E SpO circuit board Nellcor MP506 OEM 0671 00 0242 40F Interface board for Nellcor MP506 SpO 0670 00 0740 41 Power supply batt Charger for Lead Acid batteries 0014 00 0184 4la Power supply batt charger for Lithium Ion batteries 0014 00 0225 42 Insulator tubing PVC 75 0008 00 0324 46 Screw for rear housing 4 40 x 1 25 0212 12 0420 47 Screw for rear housing 6 32 x 313 0212 12 0605 48 Battery door with plastic hinge 0380 00 0358 02 49 Rubber feet small 0348 00 0191 02 50 Rubber feet large 0348 00 0191 01 51 Screw for release handle 0212 12 0405 52 Screw for Nellcor or Masimo connector mounting 0211 00 0140 52a Screw for Datascope connector mounting 0213 09 0405 54 Luer plate 0386 00 0162
37. Copyright Mindray DS USA Inc 2008 All rights reserved Contents of this publication may not be reproduced in any form without permission of Mindray DS USA Inc 0070 10 0543 Accutorr Plus Service Manual Table of Contents CONES E PLE v Foreword os EE EEEE E E E E E ES E EE TE E EE s v Notes and PrecattIonSi seise tee e eemper die te ie e t precede pede E EES v Notes sis Sete R AEEA el en ted tees vi Prec utions ete tee cti e te tede rie tet i iie cet ctt tl eos viii Theory of OperatioNhsssisssesssssssssssosso M 1 1 Major Functional Blocks of the Accutorr Plus eseseeeeeeeeeeeeeeeeee nennen enne nennen nnne nere 1 2 CPU NIBP Module Assembly with LCD Display eene eene 1 3 Software OVerview eoo tested eig e Dto bed IBID e 1 3 CPU Hardware Controls 5 ettet os eei eot tee red e BAA Ad Ge iet he 1 4 NIBP Hardware functions gorge eE p e p e Pepe breites 1 4 Main pressure transducer circuitry eeceeeeessceeeceesecesseceececaceeneeeeecaeseneeeeeeecaeeeeeeceeeesaeeeaeens 1 4 Over pressure transducer CITCUIEEY onion tee dee ri ei e eee 1 4 Five A D channels ote ep e nete Raed eal minut Sli 1 5 Pulse Channel Filtet z 5 1 prier e e A erp b eerie retener b Ges 1 5 Inflation Pump eR RH 1 5 BICC LI 1 5 D mp Valve 32 5 eco oe DeC EE efe PUN ODER PUE 1 5 Cuff Inflation Requirements sssesssseseeeeeee
38. D Damp 6 28 Input Read Configure RE CONFG 29 Vcc return D digital ground 30 N C N C N C 31 Input Output Damped Data Bus D 7 D Damp 7 32 5V Supply VCC 33 Vcc return D digital ground 34 5V Supply VCC 0070 10 0543 Accutorr Plus Service Manual Repair Information Interconnect Cables Run List PIN INPUT OUTPUT DESCRIPTION NAME 35 Input Output Damped Data Bus D 8 D_Damp 8 36 N C N C N C 37 Vcc return D digital ground 38 5V Supply VCC 39 Output Clock O CLOCK O 40 5V Supply VCC 41 Vcc return D digital ground 42 Input Keypad Data Bus DO KEYDO 43 Output Damped Address 2 A DAMPED 2 44 N C N C N C 45 Vcc return D digital ground 46 N C N C N C 47 Output Damped Address 3 A DAMPED 3 48 Input Keypad Data Bus D3 KEYD3 49 Vcc return D digital ground 50 N C N C N C 51 Output Damped Address 4 A DAMPED 4 52 N C N C N C 53 Vcc return D digital ground 54 N C N C N C 55 Output Damped Address 5 A DAMPED 5 56 N C N C N C 57 Vcc return D digital ground 58 Output AC ON ACON 59 Output Damped Address 6 A DAMPED 6 60 Input Switched ON OFF ON OFFSW 61 Vcc return D digital ground 62 N C N C N C 63 Output Damped Address 7 A_DAMPED 7 64 N C N C N C 65 Output Vcc return D digital ground 66 N C N C N C 67 N C N C N C 68 Output AC LED ON ACON LED 69 5V Supply VCC 70 Input High Low
39. D Display Five A D channels All channels are at 12 bit resolution and digitized at 101 Hz DC pressure AC pressure pulse Hardware over pressure transducer Hardware over pressure cooperator reference ao Pe N Battery voltage monitoring when the Accutorr is in battery operation Pulse Channel Filter A high pass filter is provided to isolate the pulsatile component from the DC cuff pressure This pulsatile component is digitized as the pulse channel The gain of this AC coupled channel is programmable in a manner consistent with the specified range of pulse amplitudes Inflation Pump A pump capable of inflating the cuff within the specified time limit Bleed Valve A valve and control system capable of bleeding down the cuff pressure Dump Valve A valve to rapidly discharge the residual cuff pressure at the end of the measurement cycle Cuff Inflation Requirements The cuff is initially inflated to a software determined pressure dependent upon patient size In timer mode it should be a predetermined increment traditionally 50 mmHg 40 mmHg for Neonates determined by the CPU above the previous systolic reading after the first measurement The software detects error conditions in the pneumatic system such as disconnected cuffs or kinked hoses To reduce the possibility of over inflating the cuff the pump may be driven at a lower speed when pressurizing small neonatal cuffs This is achieved by pulse width modulatin
40. Display Theory of Operation 1 2 2 1 2 3 1 2 3 1 1 2 3 2 0 0 NOOA D 10 11 Transmits Receives data to from Infrared Predictive Temperature modules Manages Recorder functions Manages Keypad interface Provides RS232 communications to PC for software download Support Service Diagnostics Error condition check e Maintain watchdog timer e Run time diagnostic Transmits Receives data to from SpO module if present LCD backlight control CPU Hardware Controls 1 3 4 5 6 Microcontroller executes the above functions including e NIBP e Recorder e Temperature module PTM or IR e SpO e LCD Battery Back Up Circuitry for Power Savings e Static memory e Non volitile RAM for configuration and future serial number Flash ROM for Program Storage and Execution Static RAM for Data Storage RS232 level translation for PC Download and second interface for CIS HIS Real time clock with 16K of Lithium backed up NV RAM NIBP Hardware functions Main pressure transducer circuitry A pressure transducer and amplifier combination is provided to acquire the cuff pressure signal Over pressure transducer circuitry An over pressure transducer independent of the main pressure transducer Over pressure limits are set according to the patient size 0070 10 0543 Accutorr Plus Service Manual Theory of Operation 1 2 3 3 1 2 3 4 1 2 3 5 1 2 3 6 1 2 3 7 1 2 3 8 CPU NIBP Module Assembly with LC
41. HIGH LOW 71 5V Supply VCC 72 Input LCD Unit LCD_UNIT 73 N C N C N C 74 N C N C N C Accutorr Plus Service Manual 0070 10 0543 Interconnect Cables Run List Repair Information PIN INPUT OUTPUT DESCRIPTION NAME 75 SpO RESET SpO RST 76 12V 15V ON 12V 15V ON 77 CHARGE OFF CHRGOFF 78 N C N C N C 79 Output A D Chip Select ADC CS 80 N C N C N C 3 7 1 2 Power Supply Header J 502 PIN DESCRIPTION NAME 14 5V Supply 45V 13 5V Supply 45V 12 5V Return D Digital Ground 11 5V Return D Digital Ground 10 15V Supply 15V 9 15V Supply 15V 8 15V Return A Analog Ground 7 12V Return P Power Ground 6 12V Supply 12V 5 Standby STDBY 4 AC ON ACON 3 12V 15V ON 12V 15V ON 2 OFF ON OFF ON 1 Charge Off CHRGOFF 3 7 1 3 J 2 Keypad Connector PIN FUNCTION PIN FUNCTION 1 Battery LED 16 Key D7 2 Interval LED 17 Key D6 3 Neonatal LED 18 Key D5 4 Pediatric LED 19 Key D4 5 Adult LED 20 Key D3 6 Memory Full LED 21 Key D2 7 NIBP Ready LED 22 Key D1 8 Print LED 23 Key DO 9 Mute LED 24 On Off Sw 10 Data Scan LED 25 Ground 11 AC On LED 26 Stat LED ENO 0070 10 0543 Accutorr Plus Service Manual Repair Information Interconnect Cables Run List PIN FUNCTION PIN FUNCTION 12 AC On 27 High_Low 13 Key 2 28 LCD Unit 14 Key 1 29 Stat LED EN1 15 Key 0 30 St
42. MER TEMP INTERVAL ELAPTIME TEMP SET ALARMS C3 o e ROOM PATIENT INFO BED i DATA W G SCAN DELETE INFO 83 84 60 56 59 DESG FIGURE 5 9 Accutorr Plus NIBP with Trend Screen Accutorr Plus Service Manual 0070 10 0543 SpO Normal Operation Accutorr Plus model with SpO5 Calibration Datascope mindray Accutorr PLUS C E Gites PRINT 3 STANDBY eNSTANDBY AX FIGURE 5 10 Accutorr Plus NIBP 5 26 0070 10 0543 Accutorr Plus Service Manual 6 0 6 1 Preventive Maintenance 6 T Introduccion iieri oct ss dee eon ennt E EE 6 1 6 2 Limitations Of Physiological Simulators 6 2 6 3 Preventive Maintenance Schedule cesses 6 3 Introduction The intent of this procedure is to ensure that the product continues to be safe and effective in its intended environment Complete knowledge of the instrument characteristics and its relationship to the clinical environment are useful in determining changes in the performance of the monitor and the clinical limitations of the device As a general rule the instrument is not tested to the full limits of it s capabilities at each service interval Rather representative points are tested and the results recorded It is important to note th
43. N AccuTemp double beeps and Battery voltage 5 7 VDC Battery requires displays while holding the replacement Start button The AccuTemp then powers down AccuTemp double beeps while Low battery condition Battery voltage is between holding the Start button 6 2 and 5 7 VDC AccuTemp displays E O0 or Return AccuTemp for service E 01 while holding the Start button 3 5 4 4 Maintenance The AccuTemp can be wiped down with any hospital approved disinfectant including bleach With normal use the only maintenance required is to keep the lens on the end of the probe clean The lens is made of polycarbonate Dirt greasy films or moisture on the lens will interfere with the passage of infrared heat and affect the accuracy of the measurement If necessary clean the lens with a cotton swab dipped in alcohol Periodic cleaning is recommended To keep the lens clean when not is use store the AccuTemp with an optical film cover in place Accutorr Plus Service Manual 0070 10 0543 3 9 Disassembly Instructions Repair Information 3 6 Disassembly Instructions CAUTION The Inside Of This Instrument Contains Static Sensitive Components Use correct static protection safeguards 1 Power down the Accutorr Plus and remove the AC power cable 2 Remove all cables and hoses from the front and rear of the instrument 3 Remove temperature measuring module and recorder module if equipped 3 6 1 Removal of the Rear Housing
44. Removal of the CPU NIBP board sees enne en eene teen enne trennen 3 11 Removal of the Power Supply Assembly esssssseseeeseeeeeeeeeenen rennen nent enne 3 11 Removal of the LCD display iiciin ienee a ree en en nennen nennen trennen 3 11 Removal and replacement of the Internal Sealed Lead Acid or Li Ion Battery 3 11 Removal of the AC Input Receptacle Assembly 16 sese 3 12 Thermal Printer optional module essere enne enne enne nennen nnne nene 3 12 Thermometer Predictive optional module eeeeseeseeeseeeeeeeee ener nnne nenne 3 12 AccuTemp IR Infrared Thermometer optional module seen 3 13 AccuTemp IR Mounting Cradle nette temere eter 3 13 Interconnect Cables R n List ertet gb e eet G tte cien bosses A ree db n e Re bee gen 3 14 Interface Specifications Connectors and Functions seen 3 14 Connector to LED Tone PCB J enne ennt nenne E essent tenente nn 3 14 Power Supply Header J 502 nensem op enteramente 3 16 J 2 Keypad Connector restet ertet rre Eee te e ee rie o iS 3 16 3 4 Speaker Connecter ree ir e EU el ero elo D ERU ERREUR 3 17 Recorder Connector J 5 uev een Rer RERO e ERR ETUR Een 3 17 Thermometer Connector J 4 ssr e a e iaae aa aE E a Ne 3 18 SpO5 Connector J 7 iii O A EO 3 18 NIBP Pump Connector J 505 ii
45. ST DESCRIPTION CONNECTOR PINS NUMBER LETTER RS232 Port Test Transmit 2 and 3 a Receive 3 Download Port Test Tip and Ring 3 b Recorder Test 4 1 Select Room Number 4 and press the NIBP START key to activate the test This test prints out a pattern on the recorder if a recorder module is attached A strip similar to Figure 5 3 will be printed Map rica o qi cic racc AIC TIT xI O D Oep Oe Dw w San FSOrN AG fk ae SMO Ie 3E e E rear ATA a X cAxm ucucimadg iz ozX2 h LlIZTVm s MAZO dI zO c gt FIGURE 5 3 0070 10 0543 Accutorr Plus Service Manual Calibration 5 5 6 1 5 5 7 Service Diagnostics Recorder Print Head Adjustment NOTE This test and adjustment is performed only after a new printhead is installed 1 Disconnect the printhead ribbon cable from the connector 2 Check the oscillator frequency at TP 1 on the recorder control board Proper frequency selection is determined by the printhead sensitivity The sensitivity rank is marked on the bottom side of the printhead flex cable near the 90 bend in the cable Table 5 5 on page 5 9 Table 5 5 PRINT HEAD RANK OSCILLATOR OUTPUT KHZ Minimum Maximum A 9 7 10 9 B 10 5 12 1 C 11 6 13 4 3 Adjust R 1 to the correct frequency CAUTION Increasing printhead operating frequency beyond the specified limits will shorten the printhead life or result in immediate permanent damage 4 Reconnect the printhead ri
46. T1 supplies the regulated 5DIG as required by the Masimo MS 3 Pulse Oximetry Module The digital 5V is then utilized to generate the analog 15V used by the MS 3 The optocouplers U1 and U2 isolate the signals used for bidirectional serial communication with the Masimo MS 3 Pulse Oximetry Module Control signal SpO COMM at J4 will allow the Accutorr Plus software to interrupt the serial transmission for future options All data and control lines interfaced to the SpO Module are opto isolated Power to the SpO Module is isolated by a DC DC converter with the input coming directly from the CPU LED Module Accutorr Plus Service Manual 0070 10 0543 1 11 Communications Board 1 4 1 4 1 1 4 2 1 4 3 Theory of Operation Communications Board The RS 232E interface required is implemented using a Maxim MAX239 Multi Channel Transceiver U602 This chip was chosen because it has a minimum 9 volt output signal level Communications is to support a 5 wire interface 4 signals and a ground The signals are described below SIGNAL DESCRIPTION INPUT OUTPUT RXD Received Data from DCE to Input DTE device TXD Transmitted Data from DTE Output to DCE device RTS Request to send from DTE Output to DCE device CTS Clear to Send from DCE Input device GND Signal Ground Input All RS 232 signals are ESD protected by a U603 an SM14M24C Transient Voltage Suppressor array The 12 VT dc power required by the MAX230 is supplied fro
47. acy 0070 10 0543 Accutorr Plus Service Manual Specifications 2 1 7 Nellcor amp SpO Range Display Resolution Display Update Calibration Accuracy Nellcor Pulse Rate Range Pulse Rate Accuracy Performance Specifications 40 100 SpO 1 SpO Less than 4 seconds Automatic 2 digits from 70 100 SpO Adult 3 digits from 70 100 SpO Neonates unspecified from 40 69 SpO 21 to 249 BPM 3 BPM Neonatal accuracy specifications are based upon testing the N 3000 and N 25 neonatal sensors on healthy adult volunteers in induced hypoxia studies in the range of 70 100 SpO The specified accuracy also takes into account published literature which predicts that there may be a small difference in SpO reported by the oximeter when measurements from adult and fetal blood with 100 fetal hemoglobin are compared Fetal hemoglobin is present in concentrations varying from 1046 to 9096 in neonatal blood and this percentage declines over time As the percentage of fetal hemoglobin in neonatal blood declines the theoretical effect on accuracy due to this source is reduced 2 1 8 Masimo SpO Range Display Resolution Display Update Calibration SpO Accuracy Saturation during No Motion Conditions Adults Neonates SpO Accuracy Saturation during Motion Conditions 2 Adults Neonates Pulse Rate Range Pulse Rate Accuracy Accutorr Plus Service Manual 40 100 SpO 1 SpO Les
48. acy is fixed and there are no possible adjustments NOTE The wavelengths of the light emitted are nominally 660nm and 890nm with the energy not exceeding 15mV Accutorr Plus Service Manual 0070 10 0543 1 9 SpO Processor Circuit Boards Theory of Operation 1 3 2 1 3 3 1 3 4 1 3 5 Nellcor MP 304 SpO Circuit Board Theory of Operation The MP 304 is a complete SpO detection and determination circuit proprietary of Nellcor Puritan Bennett The MP 304 is centralized around a Motorola MC68HC16 micro processor U 4 driven by a 32 76 Khz Oscillator Y 2 The processor is supported by a 32K x 8 static RAM U 3 and a SpO program boot EPROM U 6 Patient information is initially processed in a patented ASIC U 1 Application Specific Integrated Circuit Clock pulses are provided by Y 1 a 10 MHZ oscillator The resulting analog data is then routed into separate Red and Infra Red ADC s Analog to Digital Converters U 5 and U 7 The resulting digital data is clocked into the microprocessor and is transmitted serially to the Nellcor Interface Board P N 0670 00 0675 for further processing and display Nellcor Interface Board Theory of Operation The Nellcor interface circuit board establishes bi lateral communication and control of the Nellcor Oximeter circuit board The circuit board consists of a power supply section that converts 5 VDC into the logic and analog supplies required by the oximeter and optically is
49. all an AC receptacle forcibly removed The plastic locking tabs of the receptacle will be damaged and if re installed the receptacle may pull out in normal use Thermal Printer optional module 1 Detach the complete module from the main NIBP section by removing the two screws in the plastic housing Grasp the plastic housing and pull to the rear to disengage the Interface connector Remove the two screws retaining the circuit board and the anti static shield assembly Remove the shield Remove the remaining two screws and lift the circuit board out Thermometer Predictive optional module 1 Detach the complete module from the main NIBP section by removing the two screws in the plastic housing Grasp the plastic housing and pull to the rear to disengage the interface connector 2 Disconnect the 9 V battery NOTE Newer modules do not contain a battery Skip this step 3 Remove J2 and J3 connectors from the circuit board to front panel input receptacle NOTE The connectors may be reversed or interchanged without affecting final function 4 Remove the three screws securing the circuit board and anti static shield Remove the assembly 0070 10 0543 Accutorr Plus Service Manual Repair Information Disassembly Instructions 3 6 12 AccuTemp IR Infrared Thermometer optional module The AccuTemp has no user accessible adjustments or replaceable parts except for the 9 Volt battery If problems arise contact Te
50. and calibrated Final calibration of the exchange item is strongly suggested to match the new part to the host system See section 4 4 for details concerning the exchange program Accutorr Plus Service Manual 0070 10 0543 3 3 Test Equipment Required 3 4 Repair Information Test Equipment Required Equipment types other than these listed may be utilized if they equal or exceed the listed equipment performance Dynatech Nevada Non invasive Blood Pressure Simulator Cuff Link Power Supply Power Mate 3A 20V Fluke D V M Model 8050A Digital Storage Scope Tektronix 2230 100 MHZ Stop Watch Wilson LW 119 SpO Simulator Biotek Index Smart SAT All SpO versions N 1290 Nellcor SpO Only RS232 Test Connector Pins 2 and 3 Shorted 7700 cc Dummy Cuff P N 0138 00 0001 01 Chart Paper P N 0683 00 0447 01 Water Bath Cole Palmer model H 12 105 10 Reference Quartz Thermometer Hewlett Packard model HP 2804A with Temp Probe HP 1811A 0070 10 0543 Accutorr Plus Service Manual Repair Information Troubleshooting Problem Isolation 3 5 Troubleshooting Problem Isolation This section has been divided into two major areas clinical and technical Clinical problems can generally be resolved by the user Technical problems may require resolution by a qualified technical service person The error code table below indicates Technical problems with an asterisk Error codes are displayed on the front panel LED s of the
51. ane TIMER TEMP INTFRVAI FLAP TIME TEMP Key Test Display S D M 20 05 114 64 83 20 05 123 61 84 60 20 05 127 62 83 58 20 05 BEAR RY 56 20 05 129 62 84 59 er os MENU SELECT PRINT DEFAULTS STANDBY A e A A A A 000 Keyboard Test Accutorr Plus with Trend and Spo OO s OO e Ge c FIGURE 5 2 4 Press the DEFLATE key for 3 seconds to exit keypad test Accutorr Plus Service Manual 0070 10 0543 Service Diagnostics Calibration 5 5 4 5 5 5 5 5 6 LED Test 2a 2b This test allows the LED function to be verified by driving all seven LEDs with numbers from 0 to 9 in sequential order For this test all annunciator LEDs turn on for second Table 5 3 SUB TEST PATIENT TEST DESCRIPTION TEST ROOM NUMBER BED LETTER 7 Segment LED Test 2 a Annunciator LED Test 2 b Communications Test 3a 3b This test checks the integrity of the external communications systems Test 3a checks the external RS232 interface and requires that the transmit and receive pins be connected together Test 3b checks the Download port and requires that the tip transmit and ring receive pins be connected together The CRC table is transmitted and received If the CRC data received matches the CRC table transmitted the test passes otherwise a failure is reported Table 5 4 SUB TEST SHORT TEST ROOM PATIENT BED TE
52. anual 30 Repair Information 3 1 Introduction 5 ecce eere eene cree nne nu ceetcwee ccr RD eens 3 1 3 2 Safety Precautions ueeeesesseseeeeeeeeee ennt entente 3 2 3 3 General Troubleshooting Guidelines 3 3 3 4 Test Equipment Required eere 3 4 3 5 Troubleshooting Problem Isolation 3 5 3 6 Disassembly Instructions eeeeeeeeeeeeeeeeeeeeue 3 10 3 1 Introduction This chapter of the Service Manual provides the technical information necessary to resolve most instrument malfunctions Important prerequisites for effective troubleshooting are a thorough understanding of the instrument functions and specifications as well as an understanding of the theory of operation See Theory of Operation on page 1 1 See Specifications on page 2 1 Functional overviews of the major circuit blocks are provided in this manual See Theory of Operation on page 1 1 Technically qualified individuals may prefer to isolate problems to a sub circuit or component level Component level repair activity is not always possible Isolation of defective components is frequently impossible without the functional emulation of operating software The equipment and processes required are not cost effective on a single unit basis The procedures detailed in this chapter
53. at LED EN2 3 7 1 4 J 4 Speaker Connector PIN FUNCTION 1 Speaker terminal 2 Speaker terminal 3 no connection 3 7 1 5 Recorder Connector J 5 PIN INPUT OUTPUT DESCRIPTION NAME 1 Output TTL recorder data Buffered Data Bus D 7 2 Output TTL recorder data Buffered Data Bus D 6 3 Output TTL recorder data Buffered Data Bus D 5 4 Output TTL recorder data Buffered Data Bus D 4 5 Output TTL recorder data Buffered Data Bus D 3 6 Output TTL recorder data Buffered Data Bus D 2 7 Output TTL recorder data Buffered Data Bus D 1 8 Output TTL recorder data Buffered Data Bus D 0 9 Output ground DGND 10 Output TTL recorder write WR_RECD 11 Input logic low Recorder module RECD attached 12 Output TTL Reset recorder RESET 13 Output TTL Recorder home HOME 14 Output TTL Run print head RUN 15 Input TTL DMA request DREQ 16 Output 5V supply 2 VCC 17 Output 5V printer supply 1V 5VP 18 Output 5V return PGND 19 Output 5V printer supply 1V 5VP 20 Output 5V return PGND Accutorr Plus Service Manual 0070 10 0543 Interconnect Cables Run List 3 7 1 6 3 7 1 7 3 18 Thermometer Connector J 4 Repair Information PIN INPUT OUTPUT DESCRIPTION NAME 1 Input TTL serial in TEMP_TXD 2 Input TTL serial in TEMP_TXD 3 Output ground DGND 4 Output ground DGND 5 Output TTL serial out TEMP_RXD 6 Output TTL serial
54. at while not all functions are tested to the absolute limits every function and option should be exercised Declining performance over time is frequently the first indication of the need for more extensive service action Accutorr Plus Service Manual 0070 10 0543 Limitations Of Physiological Simulators Preventive Maintenance 6 2 Limitations Of Physiological Simulators The physiological simulator is the principle aid for problem solving Simulators have many of the same limitations as the devices that they will test It is imperative that the simulator correlate well to a Reference Standard The electronic simulators available attempt to replicate a broad spectrum of indices representative of normal and abnormal physiological events within the interpretation of the manufacturer Most simulators properly maintained will provide reasonably accurate and consistent results but may not produce the exact results when connected to similar monitors from different manufacturers However the consistent performance of a simulator is a good indicator of any change in the performance in the monitor For example an accurate mercury column for pressure verification 6 2 0070 10 0543 Accutorr Plus Service Manual Preventive Maintenance Preventive Maintenance Schedule 6 3 Preventive Maintenance Schedule The following preventive maintenance steps are required for continued satisfactory performance and safety of the Accuto
55. ation to ensure highly accurate and reproducible arterial temperatures The temperature measurement will remain on the display for a minimum of 55 and a maximum of 65 seconds after the Start button is released If using the AccuTemp with and Accutorr Plus the temperature measurement can be transferred from the AccuTemp to the Accutorr Plus for display and entry in to the trend database by placing the AccuTemp in its holder within the 60 seconds after releasing the Start button A beep tone is sounded from the Accutorr Plus once the temperature measurement information has been received by the Accutorr Plus NOTE Do not change Room Number and or Bed Letter on the Accutorr Plus during the transmission of temperature data The AccuTemp can be used to take temperature measurements for up to 128 power cycles without having to be put back into its holder After 128 power cycles the AccuTemp must be put back into the holder to be reset When the 129th power cycle is reached and the Start button is pressed 4 L s are displayed indicating that the AccuTemp is locked and must be returned to its holder NOTE The AccuTemp thermometer should be at room temperature when it is used If it has been in a very warm or very cold environment it may need time for the thermometer temperature to equalize to ambient temperature 0070 10 0543 Accutorr Plus Service Manual Repair Information Repair Information Troubleshooting Problem Isolation
56. bbon cable and run a test strip to confirm proper print density The print density is equally dependent on the printhead temperature as well as on the sensitivity of the chart paper used We recommend that the standard chart paper P N 0683 00 0447 01 for this printer be used for the print test Pump Test 5 Select Room Number 5 and press NIBP START key to activate the test This test evaluates the ability of the pump to pressurize a fixed volume representative of an adult cuff to a typical adult pressure A fixed volume of 700 cc is pumped to a pressure of 300 mmHg While the pump is operational the elapsed time is displayed in the Timer Temperature display When the target pressure is reached the elapsed time display holds its current reading and the pump deflates the chamber for another test The test passes if the chamber is inflated in less than 35 seconds Pressing the DEFLATE key at any time during the test causes the NIBP module to open all valves and ends the test Pressing and holding the DEFLATE key for three 3 seconds clears the MAP display and exits the test Accutorr Plus Service Manual 0070 10 0543 5 9 Service Diagnostics 5 5 7 1 5 5 8 Calibration Bleed Rate Test 6a 6b Press the NIBP START key to activate the selected test See Table 5 6 on page 5 10 This test evaluates the ability of the instrument to maintain a constant bleed rate for the purpose of accurate and repeatable NIBP measurements This test al
57. ce Manual 0070 10 0543 2 1 Performance Specifications Specifications 2 1 1 1 Pulse Rate Range 35 245 BPM for Adult and Pediatric 70 245 BPM for Neonate Display Resolution 1 BPM Accuracy 3 BPM or 43 whichever is greater Maximum Cuff Pressure Two means of limiting cuff pressure are provided a hardware over pressure monitor which limits the pressure to 330 mmHg for Adults 220 mmHg for Pediatrics and 165mmHg for Neonates A software overpressure monitor which vents if the pressure exceeds 300 mmHg for Adults and 200 mmHg for Pediatrics and 157 for Neonates If the hardware over pressure circuit is tripped in normal operation then the unit must be turned off and back on to reset the system Inflation Source This inflation source is capable of supplying sufficient air to bring a volume of 700 cc s to a pressure of 300 mmHg in no more than 35 seconds If the cuff is not inflated to the desired pressure within 60 seconds then the cuff is vented and a retry cycle is initiated Leak Rate With the bleed valve closed the maximum pressure drop is 10 mmHg in 90 seconds measured with a 700 cc volume at a differential pressure of 250 mmHg Cuff Vent Rate When the unit is vented a volume of at least 700 cc s is reduced from a pressure of 250 mmHg to a pressure of 20 mmHg in a maximum of 14 seconds Temperature Predictive Range 90 110 F 32 43 C Display Resolution 0 1 F 0 1 C Accuracy Meets ASTM E1112 86 for accur
58. charged or shorted The battery charging profiles are determined by a dedicated charge control integrated circuit This power supply is configured around three basic blocks The first block is an AC to DC converter consisting of an universal AC input switching regulator and a battery charger The second block consist of a DC to DC converter with a single 5 VDC output A second DC to DC converter supplies 12 5 15 and 15 VDC Power to all the DC to DC converters is OR ed from the battery or the AC to DC converter When AC power is available power to the DC to DC converters is always supplied from the AC to DC converter In the absence of AC power the on board battery is the primary power source The power supply also monitors the battery voltage In the charge mode a four stage charger detects battery condition and establishes the charge mode Since the charging modes are substantially different for Sealed Lead Acid and Lithium Ion technologies the following will list the charging stages Sealed Lead Acid battery State 0 trickle charge current under 50 ma to bring the battery to chargeable level State 1 bulk charge current of approx 530 ma Switches to State 2 at a battery voltage of 13 97 V State 2 over charge voltage 14 7 V Switches to State 3 at a charge current of approx 53 ma State 3 float voltage state maximum of 13 65 V Typical charge time 8 hours NOTE No conclusions should be drawn from any no load vo
59. chnical Service 3 6 13 AccuTemp IR Mounting Cradle The mounting cradle has no adjustments or replaceable parts The mounting cradle houses a small circuit board and a photocell sensor Accutorr Plus Service Manual 0070 10 0543 3 13 Interconnect Cables Run List Repair Information 3 7 Interconnect Cables Run List 3 7 1 Interface Specifications Connectors and Functions 3 7 1 1 Connector to LED Tone PCB J 2 PIN INPUT OUTPUT DESCRIPTION NAME 1 Vcc return D digital ground 2 Output Reset RST 3 Input Output Damped Data Bus D 0 D_Damp 0 4 Input Write Recorder WR_RECD 5 Vcc return D digital ground 6 FPGA Not Done FPGA_NOT DONE 7 Input Output Damped Data Bus D 1 D_Damp 1 8 Output Read Write R W 9 Vcc return D digital ground 10 Output LDS LDS 11 Input Output Damped Data Bus D 2 D_Damp 2 12 Output Chip Select I O CS IO 13 Vcc return D digital ground 14 Input Write Delay WR DLY 15 Input Output Damped Data Bus D 3 D Damp 3 16 Input ST Watchdog ST WDOG 17 Vcc return D digital ground 18 Input LCD Angle LCD ANGLE 19 Input Output Damped Data Bus D 4 D Damp 4 20 Input LCD Angle Feed Back LCD ANGLE FB 21 Vcc return D digital ground 22 Input LCD Angle Reference LCD REF 23 Input Output Damped Data Bus D 5 D Damp 5 24 Output TONE TONE 25 Vcc return D digital ground 26 N C N C N C 27 Input Output Damped Data Bus D 6
60. cle forcibly removed The plastic locking tabs of the receptacle will be damaged and if re installed the receptacle may pull out in normal use The connectors may be reversed or interchanged without affecting final function Mindray DS USA Inc maintains a policy of continuous development for product improvement and reserves the right to change materials specifications and prices without notice When replacing a Keyboard you must replace the Graphic Panel Monitors with Nellcor and Masimo SpO do not report SpO2 Runtime and Boot Software Versions 0070 10 0543 Accutorr Plus Service Manual Notes Introduction NOTE The Accutorr Plus always displays time in a 24 hour format Accutorr Plus Service Manual 0070 10 0543 vii Introduction viii Precautions Precautions CAUTION CAUTION CAUTION CAUTION CAUTION CAUTION Li lon batteries are intended for replacement by qualified service personnel only Li lon batteries used in this device may present a risk of fire or chemical burn if mistreated Do not disassemble heat above 100 C 212 F or incinerate Replace battery with P N 0146 00 0069 only Use of another battery may present a risk of fire or explosion Dispose of used battery promptly Keep away from children Do not disassemble and do not dispose of in fire This instrument utilizes multiple layer circuit boards and laser and ultra sonic welded surface mounted components
61. ctions are e Nellcor SpO system e Masimo SpO system 1 3 1 SpO gt General Theory Of Operation Regardless of manufacturer SpO determination is based on the relative attenuation of a red and an infra red light source A sensor from the instrument contains two sets of LED s to illuminate a portion of the body e g fingertip and a single photo sensor detects the light returned The LED s are alternately pulsed red and infra red Since hemoglobin is the carrier of oxigen in the blood and the relative attenuation of the light sources is proportional to the amount of oxigen carried by the hemoglobin a relative level of saturated hemoglobin can be determined Since we are measuring the ratio of red and infra red return from the circulatory system the detection method is substantially independent of skin color or total skin attenuation Since the blood flow has a pulsatile characteristic a pulse rate can also be computed from this information NOTE There is no calibration possible for the determination of the SpO2 or of the pulse rate derived As mentioned above we are measuring a ratio of intensity of two light sources to determine the of saturated hemoglobin The determination is based on proprietary software interpretation of the reflected light ratios and it is validated against strict clinical trials where fresh arterial blood is examined with a clinical blood gas analyzer Once the software is finalized the SpO2 monitor accur
62. e accuracy shall be rounded to 4 digits 2 1 9 Battery BATTERY TYPE SEALED LEAD ACID LITHIUM ION Number of Batteries 1 1 Battery Voltage 12 VDC nominal 11 1 VDC nominal Battery Capacity 2 3 Amp Hour 3 6 Amp Hour Battery Run Times Accutorr Plus NIBP Accutorr Plus NIBP 8 Hours from full charge witha 5 Hour new battery at 25 C Accutorr Plus NIBP with 1 NIBP with Trend Screen measurement every 5 3 Hours Accutorr Plus NIBP with Trend minutes and recorder Screen in use 8 Hours Accutorr Plus NIBP Accutorr Plus NIBP with with Trend Screen and Trend Screen and SpO SpO2 Nellcor 4 5 Hours Nellcor 2 Hours Masimo 4 5 Hours Masimo 2 Hours Recharge Time 8 hours max in standby 2 hours max in standby only only Cyclic Service Life 150 cycles 100 to 500 cycles 100 to 20 of capacity 30 of capacity 400 cycles 100 to 1000 cycles 100 to 40 of capacity 50 of capacity 2 4 0070 10 0543 Accutorr Plus Service Manual Specifications Performance Specifications 2 1 10 Real Time Clock RESOLUTION 1 MINUTE Accuracy 1 minute week Display Format 24 hours Power The real time clock maintains the time and date when the instrument is On or in the Standby mode connected to AC mains or running from internal battery for at least ten years from original assembly The real time clock will maintain time and date even if the instrument s main battery is disconnected Accutorr Plus Ser
63. e ederet ert ret Eee pee epe Tete e eb Reed eges 5 18 Battery Test Por Accutorr PIUS se oerte c rene et eer edt eet eee gun 5 19 Low Battery Indicator and Low Battery Cut Off sss 5 19 Set the Current Time c t eret nsque end remet ia Eget te Oen Uc ed 5 20 NIBP Normal Operation esses eene nennen trennen enne nee AE eene aa a a aiaa enne enne 5 21 Trend Memory Initialization eseri ertet e ae t be eese de etes 5 21 SpO Normal Operation Accutorr Plus model with SpO ssssssssesseeeee 5 22 Preventive TENITSIELN CU R bos sos roose ions 6 1 Introd ctlOD cue iecit ret ente de tU E e eid ee ied ent eed See es 6 1 Limitations Of Physiological Simulators eese eene nete rennen 6 2 Preventive Maintenance Schedule sse eene ener en nnne entere nnne nennen nenne 6 3 Mechanical and Physical Visual Inspection One Year Interval eese 6 3 Electrical Safety and Performance Checks One Year Interval eee 6 3 iv 0070 10 0543 Accutorr Plus Service Manual Contents Introduction Contents 1 0 Theory of Operation cccecseessseeeeeeeeeesneeseneeeeeseeeeeeseeeesseeesenseeees 1 1 2 0 Specifications soeren eaae raaraa a aes e ae E eset nnn nnn annnm nnn 2 1 3 0 Repair Information censere nennen 3 1 4 0 Replacement Parts Isometric Drawing
64. eading should agree within 1 with the external pressure gauge If it does not agree a failure has occurred and proceed to section 5 5 15 Main Pressure Transducer Calibration on page 5 14 Press the DEFLATE key to release the pressure and exit the test Select diagnostic test 11 Room b Bed Press the START NIBP key to start the MED calibration test Verify that the pump comes on the pressure increases and then the pump stops After 10 seconds verify that the pressure settles between 100 mmHg and 200 mmHg Compare the pressure displayed to an accurate external pressure gauge The pressure MAP LEDs reading should agree within 1 with the external pressure gauge If it does not agree a failure has occurred and proceed to section 5 5 15 Main Pressure Transducer Calibration on page 5 14 Press the DEFLATE key to release the pressure and exit the test Select diagnostic test 11 Room c Bed 0070 10 0543 Accutorr Plus Service Manual Calibration Service Diagnostics 8 Press the START NIBP key to start the HIGH calibration test Verify that the pump comes on the pressure increases and then the pump stops After 10 seconds verify that the pressure settles between 200 mmHg and 300 mmHg Compare the final pressure displayed to an accurate external pressure gauge the MAP LEDs reading should agree within 1 with the external pressure gauge If it does not agree a failure has occurred and proceed to section 5
65. ect the ROOM and the UP DOWN keys to set Room number to 0 Press ROOM BED key to select BED Use the UP DOWN ARROW keys to select test PRI a or b Monitors without SpO option may not display results for tests Oc and Od Press ROOM BED again to lock in selection Press the START NIBP key Press the DEFLATE key until a beep is heard This allows a selection of the next test Repeat process for test b Accutorr Plus Service Manual 0070 10 0543 5 5 Service Diagnostics Calibration Table 5 2 SUB TEST TEST ROOM PATIENT BED DESCRIPTION OF SOFTWARE MODULE NUMBER LETTER ACM Runtime Software Version 0 a ACM Boot Software Version 0 b SpO ACM Runtime Software Version 0 Cc SpO ACM Boot Software Version 0 d NOTE Monitors with Nellcor and Masimo SpO2 do not report SpO2 Runtime and Boot Software Versions 5 6 0070 10 0543 Accutorr Plus Service Manual Calibration 5 5 3 Keypad Test 1 Press the Room Up arrow to change the Room Number to 1 2 Press the Start NIBP key to run the keypad test Service Diagnostics 3 Press any key on the keyboard A number will appear in the Patient Bed Letter Display This number is identified in Figure 5 1 on page 5 5 Verify that the correct number appears in the Patient Bed Letter Display when each key is pressed Hidden Key Start Test Key 0 Datascope mindray Accutorr PLUS NIBP setrup J DEFLATE C
66. ee 2 2 Inflation SOUICe 3 5 eee t race tuer de f UR i hid ei ie SUR eo eos 2 2 Leak Rate oi RUNS RUE EMI 2 2 CUTE Vent R ALG T M 2 2 Temperature Predictrve sce t temere S AEAEE COURSE E A AEREAS 2 2 I rc MEM Masimo SpO Battery ui eee oret ape a e Real Time Clock 5 oen ore gr REO RU Or e een 2 5 Safety Characteristics oci eco eese tee Dad Seed TRU biases o o DW ation eines 2 6 Risk Eeakage Currents aiima eee iso e tee cm beste pte Ue RU ER eee eb ecs 2 6 Dielectric Withstand jes pete etie eite 2 6 Ground RESISTANCE te esr e eddie et e eet rie dp ade te cree 2 6 Type of Protection Against Electric SHOCK eee cee ceseeeceecesceseeseeeeeeeeecaeeseecaecsaecaecesensesereneeeaes 2 6 Degree of Protection Against Electric Shock sssesssseseeeeeeeenerenee nennen 2 6 Physical Characteristics ueste te re eh Reh ODER 2 7 Environmental Characteristics eese trennen ener entente nete E terere tenerent nen 2 7 Electrcal Ratings o pieiet seres isise ehe vire pl e opt p UE CH ER t Ee t een 2 8 Agency Compliance oc gie E E teca e Gee i ined 2 8 Electromagnetic Compatibility terri ter dep i e ae rtp ien erbe pei otn 2 8 3 1 Introduction oom dp nae ret ie eU E ee e RE 3 1 Safety PrecautioDs i eda sprite ere eei RR D ee ERE RR E ERa aes ieS 3 2 General Troubleshooting Guidelines sessi ener nennen trennen entente
67. eeeeene ener enne eene en rene a nennen nennen 1 5 Pulse Acquisition Requirements senrose sapori soor a rE nennen nennen nennen nete enne EE E 1 6 Artifact Rejection Requirements sessi enne nennen trennen trennen rennen nee 1 6 Parameter determination Requirements eese nennen eren 1 6 Major Hardware Components esses ersten ene tnne terere entren entente neret 1 6 CPU icem Ee beoe E RUE UU ce diss 1 6 Flash Memoty ne REDE ERE RU RUSSE he 1 6 Battery Backed Up Static RAM eec ee cette idet ede terit ee eh eerie 1 6 Nonvolatile RAM 2a aateie ia Weiter Sates ah as Be iue 1 6 Mi cromanager 2 oeste teiiseoeeott isi tor terme e utate eed eie bles tess esee ede evel E betes 1 7 Battery Backup Voltage Regulator Circuitry eese eene 1 7 Real Time Clock ice eo pU E ERE RE 1 7 Recorder Interface neget eme Uere grege DEP 1 7 Communication Module ta ete eid ee riot tette ect edere 1 7 LED Display 5 dtr Ren onim a e bte HE 1 7 EL Power Module epe i RE Ee Mian eet e us REIR egent 1 8 Jenmperatute Int rface iori se iet i eed get 1 8 SpO Interface ad accession ione oienepilen Ue nen OI REDIT n 1 8 SpOs Processor Circuit Boards cete Ree eere mim A ARAARA 1 9 SpO General Theory Of Operation esssseseesseeeeeeeeeee eene nennen nennen nete nete enne trennen 1 9 Nellcor MP 304 SpO Circuit Board Theory of Operation sse 1 10 Nellcor Inte
68. enabling a logical isolation and resolution of malfunctions The Accutorr Plus is offered in many functional configurations including the options licensed and manufactured by third parties The third party circuits will be treated solely as black box devices with only the relevant input output and power sources described The Theory of Operation section describes only the highest configuration level Units built with fewer or different options may not use all of the capabilities of the Accutorr Plus yet the over all theories will remain constant Accutorr Plus Service Manual 0070 10 0543 Major Functional Blocks of the Accutorr Plus Theory of Operation 1 1 Major Functional Blocks of the Accutorr Plus e CPU NIBP Module Assembly with LCD Display e SpO Processor Board Communication Board Main Power Supply and Battery Charger Assembly e LED Tone Module Assembly 1 2 0070 10 0543 Accutorr Plus Service Manual Theory of Operation CPU NIBP Module Assembly with LCD Display 1 2 CPU NIBP Module Assembly with LCD Display The Accutorr Plus CPU NIBP module controls the functions of the NIBP receives input data from the keypad temperature probes and SpO module transmits output data to the recorder interface connection for a serial I O port for PC communication In addition the CPU NIBP module distributes the power from the power supply which includes power and control signals to the LED Tone module Thru this board the power w
69. ersists in the low disturbance environment the instrument performance may be suspect If the substitute instrument exhibits similar poor performance in the original environment the environmental causes must be eliminated 2 Usethe proper equipment See Test Equipment Required in section 3 4 for problem isolation and resolution Similar devices may be used if they equal or exceed performance standards of the equipment suggested CAUTION This instrument utilizes multiple layer circuit boards and laser and ultra sonic welded surface mounted components Do not attempt to un solder welded components from the circuit board the circuit board will be permanently damaged CAUTION Soldering and solder removal equipment must be low voltage operated and grounded to avoid static charge and stray current induced component damage Maximum wattage 25 W 3 Cleanthe repair area After soldering operations clean off the repaired area with ethyl or methyl alcohol and a stiff hair brush This will remove residual solder flux making the repaired area more visible for an inspection and returning the instrument to its original neat appearance Removal of the flux will also facilitate making electrical measurements in the affected area as the flux itself is not conductive 3 3 2 Exchange Program A comprehensive circuit board and electro mechanical module exchange program is available The exchange circuits and modules are warranted factory pre tested
70. et o pU D n Re 5 8 Recorder Print Head Adjustment sese enne enne enne ene 5 9 Jain M 5 9 Bleed Rate Test 64 6D i ote eerte eate 5 10 Leak Test rares ctt inia tatu e ame A ca ee 5 10 Over Pressure Test 8a 8b 86 iani RR ennt p ite 5 11 Pulse Channel DC Offset Test 9a 9b 9c ssssssssssssesseseeeeen nennen enhn enne nennen nnns 5 11 Pulse Channel Average Noise Test 10a 10b 10c essere enne enne 5 12 Main Pressure Transducer Verification Test 11a 11b 116 sessssseeeen 5 12 Verification of Accutorr Plus Pneumatic Performance using the Cufflink NIBP Simulator 11d 5 13 Over pressure Transducer Verification 12c 12a 12b 5 13 Main Pressure Transducer Calibration c cccccscccssscecessecessccecesncceesaeecseaceecseecesaesesesaeseseeeeesseeenaes 5 14 Over pressure Transducer Calibration eeseseseseeeeeeeeeene eene enne entente nennt 5 14 Battety Selectiom 13 5 oec ertet tener RT et diee baee GR aves redu berto me bim dies 5 15 Predictive Thermometer Verification And Calibration essere enne eene 5 16 Water Bath M e Od RRRUESDeISI RI UI edet ai 5 16 System Calibration Procedure ya cise e ote beet reete eR epe HE 5 17 Temperature Verification Test Infrared Thermometer Applicable Only To Units Equipped With A Temperature Option sas x eite tret PE Ue He ERES EP EEST 5 17 Low Battery Sensimg ei ec
71. f the keypad until a 1 is shown in the Timer Temp Interval LED of the UUT Press the PATIENT SIZE key to select Adult size indicator Press the Set ALARMS key to enter the alarm setting mode Use the UP and DOWN ARROW keys to set the Systolic Low alarm to 115 mmHg Press the Set ALARMS key again and set the Diastolic Low Alarm to 95 mmHg Press the Start NIBP key Verify the monitor takes a measurement and the Systolic and the Diastolic low alarms are violated The LED s for these parameters will blink on and off and an alarm tone will sound for the violation Press the MUTE Key to silence the alarms After the fifth measurement is complete allow the cuff to pump up Press DEFLATE key Verify cuff deflates Review the data that was stored in the database by scrolling through the patient trend information Use the UP and DOWN ROOM and BED keys or LCD display of the UUT and verify that the Systolic and Diastolic information is available in the LED s for each stored settings Remove the cuff from the UUT and press the START key Confirm that the UUT pump runs and that it displays 8810 in the Room Bed window within 60 seconds and attempts another inflation Press the DEFLATE key to stop test 5 9 Trend Memory Initialization 1 Accutorr Plus Service Manual To clear the UUT Trend Memory for all patient settings press and hold the DEFLATE INFO key while powering up the unit 0070 10 0543 21 SpO Normal Operation Accuto
72. fusion will display Adjust the simulators pulse amplitude up and down until either status code of 8853 or 8854 displays 9 Restore normal simulation parameters as described in step 1 10 Remove the sensor from the simulator to induce a status code of 8851 Sensor Off Masimo SpO only 11 Disconnect the sensor from the Accutorr Plus to produce a status code of 8850 No 5 22 Sensor 0070 10 0543 Accutorr Plus Service Manual Calibration SpO Normal Operation Accutorr Plus model with SpO5 Datascope mindray Accutorr PLUS er e PA TIEN T SETUP TIM ER TEMP PATIENT INFO a DATA ma SCAN DELETE NFO FIGURE 5 7 Accutorr Plus NIBP with Trend Screen and Mindray DS SpO Accutorr Plus Service Manual 0070 10 0543 5 23 SpO Normal Operation Accutorr Plus model with SpO5 Calibration Datascope mindray Accutorr PLUS gu CD cl FIGURE 5 8 Accutorr Plus NIBP With Trend Screen and Nellcor or Masimo SpO 5 24 0070 10 0543 Accutorr Plus Service Manual Calibration SpO Normal Operation Accutorr Plus model with SpO5 mindray Datascope Accutorr PLUS Gil _ M __ gt 2 Da ini po 20 05 20 05 i 123 61 20 05 20 05 127 62 83 58 START NIBP e PATIENT CD TI
73. g of 100 mV 5 mV is on the DVM NO Go FP amp Adjust the decade box to 4746 ohms 2 ohms Record the voltage displayed on the DVM 8 Connect the DVM lead to J4 4 Adjust R2 until the DVM reading is the same as the one recorded in step 7 1mV 9 Remove all jumpers and test leads The calibration is completed 10 Set the decade box back to 8343 ohms Power cycle the unit switch off then on The initial start up temperature of 85 00F should be displayed 5 6 3 Temperature Verification Test Infrared Thermometer Applicable Only To Units Equipped With A Temperature Option 1 Pre heat water bath to 100 F Place floating Black Body device into water bath and allow to stabilize until step 7 or a minimum of 30 seconds 2 Prepare the thermometer for the verification process by removing any disposable probe covers Clean the probe lens with a swab dipped in alcohol 3 Completely cover probe tip with a piece of aluminum foil from the lens to the probe neck portion Allow 5 minutes for the probe and foil to stabilize at ambient temperature 4 Activate the thermometer by pressing the button Read the ambient temperature displayed and record the number as T Remove the aluminum foil Check the water bath temperature against a laboratory grade mercury thermometer with a verified accuracy of 0 4 F 0 2 C or better Record the water bath temperature as TT 7 Attach a disposable probe cover to the thermomete
74. g the pump control signal Further control of the neonatal inflation rate may be achieved by using the bleed valve to relieve some portion of the pump s delivery Accutorr Plus Service Manual 0070 10 0543 1 5 CPU NIBP Module Assembly with LCD Display 1 2 3 9 1 2 3 10 1 2 3 11 1 2 4 1 2 4 1 1 2 4 2 1 2 4 3 1 2 4 4 Pulse Acquisition Requirements Pulse amplitudes from 0 06 mmHg to 12 mmHg are recognized Pulse rates can range from 30 bpm to 250 bpm The software discriminates pulses from the digitized pulse channel signal and characterizes the pulses for amplitude DC pressure and pulse period False triggering due to the diacritic notch or noise is minimized Artifact Rejection Requirements The software provides means of artifact rejection both during acquisition and during subsequent processing of the pulse array Means of rejecting artifacts include attention to the timing and amplitude of pulses relative to adjacent pulses If motion artifact is detected during acquisition the software may cause temporary suspension of the bleed down process until a quiescent patient condition returns Parameter determination Requirements Pulses which are deemed acceptable after artifact processing are entered in the pulse array Heart rate is taken to be the average rate of the pulse array data Pulse periods differing excessively from the median are ignored Pulses which do not appear to fit the amplitude envelope are removed
75. hstand current spikes of 3 to 4 Amperes without current or voltage sags 1 Remove the battery pack and AC mains cord Remove monitor rear cover Disconnect the Battery Connector cable from the power supply 2 Set the external power supply voltage to 14 5 VDC current limit set to 4 Amps Connect the positive of the external power supply to the input side of the F3 fuse 4 A Connect the negative side of the external power supply to the negative pin of the Accutorr Plus power supply or to the chassis near the battery connector 3 Connect a DVM to the load side of F3 of the Accutorr Plus power supply and the chassis of the Accutorr Plus This method will read the actual voltage applied to the internal power supply and will be the reading used to determine the Low Battery Indicator and Low Battery Cut Off voltages 4 Turn the monitor ON and allow to complete the self check initialization Slowly decrease the external power supply voltage in approximately 100 mv steps every 30 seconds Note the voltage where the Battery LED begins to flash Note this voltage and compare to the specification in the following table Continue to decrease the voltage until the monitor turns off This is the Low Battery cut off voltage Note this voltage and compare to the specification in the following table Table 5 11 TYPE OF BATTERY LOW BATTERY INDICATOR LOW BATTERY INSTALLED LIMITS CUT OFF LIMITS Sealed Lead Acid 10 95 to 11 63 VDC 9 8 to 10 7 VDC L
76. ill be distributed to the rest of the system for example the Recorder and the SpO modules Also the CPU NIBP module supplies separate power to the LCD back light converter to be used on the Accutorr Plus The CPU NIBP circuit board is comprised of both software and hardware The following is a summary of the software control exercised and the major hardware affected This is for informational purposes only and both software and hardware controls maybe changed at any time without notice 1 2 1 Software Overview The software performs the following functions 1 Initializes hardware and software modules Micro controller ports and communications serial interfaces e Software entry points and variables e Read configuration from NVRAM 2 Performs power up diagnostic e Micro controller FLASH and STATIC RAM test 3 Perform NIBP functions e Start measurement Repeat measurement e Over pressure limit Enteror exit test mode e Abort measurement Enterorexit calibration mode Update alarm limits Report alarm status Report data Determine inflation pressure Perform controlled cuff deflation Monitor DC and AC pressure and acquire pulsations e Reject artifacts Decide on termination point and exhaust cuff pressure e Smooth pulsation data Determine systolic mean diastolic pressure and heart rate e Check alarm conditions Accutorr Plus Service Manual 0070 10 0543 1 3 CPU NIBP Module Assembly with LCD
77. in the same ear will give the ear canal time to recover and the readings should be consistent with the initial measurement Accutorr Plus Service Manual 0070 10 0543 3 7 Troubleshooting Problem Isolation 3 5 4 2 How the AccuTemp Measures Arterial Temperature Adults Pediatrics The AccuTemp is a self calibrating infrared ear thermometer that accurately measures the infrared heat energy radiating from the ear canal opening The AccuTemp determines the highest temperature in the ear canal opening measures the ambient temperature and then calculates arterial core temperature through its patented heat balance system This measurement will respond instantly to changes in arterial temperature without the delays and artifacts inherent in oral and rectal methods providing the means to identify a fever faster and more reliably than other methods Temperature gradients in the ear canal vary with the amount of environmental exposure perfusion patterns ambient temperature etc The least variable and therefore most accurate is the small deep area of warmest but still visible tissue A conventional ear thermometer takes many readings of the same large area which includes the high gradient distal ear tissue resulting in low non reproducible and inaccurate temperature readings The AccuTemp utilizes a narrow field of view and scanning capability to search the ear for the small deep area of warmest tissue required for heat balance calcul
78. initial power up sequence an a is displayed in the bed LED a 0 is displayed in the Room LED s 3 Press the ON STANDBY key to turn the UUT off 0070 10 0543 Accutorr Plus Service Manual Calibration Service Diagnostics 5 5 Service Diagnostics The Service Diagnostics tests must be run in the sequence indicated Not following the tests in the order shown may result in the test failing The numbers and letters in parentheses after the title of each test represent the room number and bed letter used to access the test 5 5 1 Introduction Hidden Key To enter the Service Diagnostics mode while powering on the unit press and hold the hidden key until two beeps are heard The hidden key is the Adult symbol above the Patient SETUP key ctn Verify that after the initial power up sequence a 0 is displayed in the Room LED a is displayed in the Bed LED and ddd is displayed in the Systolic LED s 5 5 2 Software Version Test 0a Ob This test displays the installed software version s in the monitor The results are displayed in the read outs illustrated in Figure 5 1 on page 5 5 Installed Software Version ie A07 02 o9 F D P Sai Qo MA E Selection Malin ie ACM Runtime softare identifier P BNN MENU SELEC PRINT JEFAULT J C OED Gx GD TR FIGURE 5 1 Software Version Test Confirm that the ROOM number is at 0 otherwise use the ROOM BED key to sel
79. ithium lon 9 95 to 10 61 VDC 8 7 to 9 5 VDC 6 Turn the monitor Off re assemble and install the battery pack Accutorr Plus Service Manual 0070 10 0543 5 19 Battery Test For Accutorr Plus Calibration 5 7 2 Set the Current Time 1 Press and hold the TIMER TEMP key for 6 seconds The hour digit only displays 2 Press the UP or DOWN ARROW key to change the number 3 Press the TIMER TEMP key to activate the minute display Hour Display Press and hold to enter the clock set mode Set hour then press again to set the minute Press to Change FIGURE 5 5 Hour Display NOTE The Accutorr Plus always displays time in a 24 hour format 4 Press the UP or DOWN ARROW key 12 or 13 to change the number Continue pressing the TIMER TEMP key and the ARROW keys to set the month day and year in that order Minute Display INTERVAL ELAPTIME TEMP After the time and date have e been set press SET x ALARMS to exit the clock set mode V iN Press to Change FIGURE 5 6 Minute Display 5 20 0070 10 0543 Accutorr Plus Service Manual Calibration NIBP Normal Operation 5 8 NIBP Normal Operation 1 Press the left ARROW key on the Cufflink Simulator to highlight SELECT BP then press the ENT key Set pressure test to 120 80 90 and press the ENT key Attach the simulator Cufflink to the input pressure fitting of UUT Press the INTERVAL key o
80. ive Temperature Module Isometric Parts List FIGURE NO DESCRIPTION PART NUMBER 1 Housing 0380 00 0271 2 Circuit Board 0670 00 0582 3 Anti Static Shield 0349 00 0252 4 Connector Assembly without 9V battery 0012 00 1335 5 Spacer Probe 0432 00 0008 6 Washer Flat 0221 00 0140 N S Captive Screw for Mounting 0217 02 0003 N S Captive Washer for Above 0221 00 0121 Not shown 0070 10 0543 Accutorr Plus Service Manual Replacement Parts Isometric Drawing Isometric Drawings And Parts List FIGURE 4 4 Isometric Drawing Mobile Stand Type 2 Black Base Accutorr Plus Service Manual 0070 10 0543 4 15 Isometric Drawings And Parts List Replacement Parts Isometric Drawing 4 7 4 Mobile Stand Type 2 Black Base Assembly Parts List FIGURE NO DESCRIPTION PART NUMBER 1 Basket 0436 00 0117 03 2 0436 00 0118 02 3 Polyurethane Wheel 0401 00 0034 4 Base Casting 0436 00 01 17 02 N S Replacement Hardware Kit 0040 00 0305 Not shown 4 7 5 Mounting Options Any Model of the Accutorr Plus Sample Wall Mount Accutorr Plus Mounting Adaptor 0406 00 0728 0070 10 0543 Locking Wheel 0401 00 0019 Non Locking Wheel 0401 00 0020 Sample Rolling Stand Accutorr Plus Service Manual so Calibration 5 1 5 2 5 3 5 4 5 5 5 6 5 7 5 8 5 9 5 10 Accutorr Plus Service Manual Introd ction entere emn rentrer tenere 5 2 Precautions And Guidelines
81. ix of keys In the case of simultaneous key presses a key is recognized by the software The other key will not be recognized until the initial key is released Accutorr Plus Service Manual 0070 10 0543 1 15 LED and Tone Module Theory of Operation This page intentionally left blank 1 16 0070 10 0543 Accutorr Plus Service Manual 20 Specifications 2 4 Performance Specifications sese 2 1 2 2 Safety Characteristics eese ennt 2 6 2 3 Physical Characteristics eese 2 7 2 4 Environmental Characteristics eese 2 7 2 5 Electrical Ratings 5 4 2 8 2 6 Agency Compliance eeeesseseseeeeeeeee seen nennen nani 2 8 2 7 Electromagnetic Compatibility eeeeeereseeeenees 2 8 2 1 Performance Specifications Systolic Pressure Readout Number of Digits 3 Accuracy Mean error less than 5 mmHg Standard deviation less than 8 mmHg Range Adult Mode 55 to 260 mmHg Pediatric Mode 55 to 160 mmHg Neonatal Mode 45 to 120 mmHg Tested per ANSI AAMI SP10 1992 methods 2 1 1 NIBP Measurement Cycle Time Less than 30 seconds average at 80 BPM with 180 mmHg pump up pressure without retries motion artifact or arrhythmia with standard adult cuff on a healthy individual Cycle time is affected by arm size and wrapping technique Accutorr Plus Servi
82. l overload of the power source To re initialize the low battery detector circuits reconnect the battery at the conclusion of all tests while the UUT is on A C power source Reset the real time clock and date if required 5 1 1 Status and Error Code Table The Accutorr Plus uses the various displays on the front panel to display the operational status Error codes listed below can generally be resolved by the user however error codes with an asterisk may require resolution by a qualified technical service person 5 1 1 1 Error Codes Table 5 1 TYPE CODE DESCRIPTION REASON NIBP 8810 Retry Unable to Motion artifact cycle time out weak pulsations or Measure no pulsations A triple beep tone is generated 8811 Retry Pump Insufficient cuff pressure A triple beep tone is Higher generated 8812 Stop Cuff Excessive cuff pressure detected by the software Overpressure A triple beep tone is generated 8813 Stop Unable to 4 successive measurement attempts failed A triple Measure beep tone is generated TEMP 8830 Check Probe Tissue contact may have been lost PTM 8831 Replace Probe Defective probe or connection 8832 Battery Low The 9V battery needs replacement 5 2 0070 10 0543 Accutorr Plus Service Manual Calibration Introduction Table 5 1 TYPE CODE DESCRIPTION REASON SpO5 8850 No Sensor No sensor connected 8851 Sensor Off Sensor not on patient Masimo SpO only 8852 I
83. le from the CPU NIBP board Removal and replacement of the Internal Sealed Lead Acid or Li lon Battery To remove the externally accessible battery press the quick release tab on the battery access door and open door The battery is retained internally in a sliding compartment captured by a spring loaded release tab Press the tab away from the battery the battery will eject with a spring assist mechanism Reverse the process to install the replacement battery Accutorr Plus Service Manual 0070 10 0543 3 11 Disassembly Instructions 3 6 9 3 6 10 3 6 11 Repair Information NOTE New batteries are shipped in a discharged state for safety reasons A new battery must be charged for 2 hours for Li lon or 8 hours for Sealed Lead Acid Battery before first use The monitor may be used with AC mains power during the charge cycle but battery operation could be limited during this time Removal of the AC Input Receptacle Assembly 16 1 Press the plastic locking tabs on the rear of the AC receptacle A small screwdriver may be inserted at the cut out on the left of the AC connector to release the locking tabs From the front side of the receptacle starting at the edge closest to the Interface connector press upwards while pulling the connector out Disconnect the cable end from the Power Supply circuit board Remove the locking nuts from the safety ground terminal stud remove ground conductor NOTE Never re inst
84. ltage readings or from voltages of the battery during the charge cycles 0070 10 0543 Accutorr Plus Service Manual Theory of Operation 1 5 3 1 6 1 6 1 LED and Tone Module Lithium lon Battery Battery charge condition check checks battery condition and temperature Conditioning charge charger pulses every second if voltage is under 5 8 V e Fast charge enabled if battery voltage is over 11 7 V dual mode e Constant current approx 2 Amp Up to 12 6 V Constant voltage 12 6 V until termination of charge Charge termination when charging current falls under 280 ma or maximum time out of 2 hours Typical charge time 2 hours LED and Tone Module The Accutorr Plus LED Tone Module performs three main tasks 1 It drives all the 7 segments and discrete LED user displays on the keypad 2 it generates an EN475 compliant alarm signal via the onboard Digital to Analog Converter DAC and drives advisory tones to the speaker by the onboard power amplifier and 3 it controls the interface between the main CPU and the keypad The functionality on the module is accomplished by the use of a Field Programmable Gate Array FPGA device The LED Tone Module is under direct control of the CPU NIBP module for inputs and converts the input data into LED segment drive as well as the audio tones for advisory and alarm conditions Keypad Control Circuitry for scanning the keypad for key presses The board scans a 3x8 matr
85. m the onboard DC DC converter In addition the MAX239 requires 12 Vdc for the onboard DC DC converter which makes 12 Vdc This is supplied as an input to the communications module The MAX 239 receivers are controlled by logic signal CSTAT Logic 0 enables the receivers otherwise the are tristated The RS 232 signals appear on connector J603 a dual row 14 pin header which will have a mating 14 pin pendant ribbon cable attached The other end of the ribbon cable assembly is a 9 pin panel mount D connector LCD Inverter Power Supply This describes the circuit that will provide the 90 VAC required for the LCD Module back lite exitation DC to AC Inverter The inverter is powered by 12SW from the main power supply board Once powered the inverter is designed to provide the AC waveform required by the backlight The output AC wave form is 90 Vrms minimum voltage The AC frequency is to be between 360Hz and 440Hz C1 and C2 provide filtering of the inverter DC input Current Switch The Q1 gate is connected to ELOFF This control signal is pulled low by R1 which maintains Q1 in the off state if is floating Since Q1 passes the inverter return current to the ground signal PGND on J651 Q1 must be on to enable the inverter The host can turn on Q1 and enable the T1 inverter by driving ELOFF high D1 filters switching transients on 12SW when Q1 is turned on and off Output connection of 90 VAC is at J 651 on the CPU NIBP control board
86. n the MAP display When the target pump pressure is reached the peak pressure is frozen in the MAP display during a five second dwell During leakage measurement the current pressure leakage is displayed in the MAP display and the elapsed test time in seconds is displayed in the Temperature Time Interval display After the leakage measurement time has elapsed the MAP and Temperature Time Interval displays are blanked and a 00 Pass or FF Fail will be displayed in the Bed window Pressing the DEFLATE key at any time during the test causes the NIBP module to open all valves and ends the test The maximum pressure drop is no more than 10 mmHg in any 90 second period when connected to a 700 cc volume Pressing the DEFLATE key ends the test and deflates the chamber Pressing and holding the DEFLATE key for three seconds clears the MAP display and exits the test 0070 10 0543 Accutorr Plus Service Manual Calibration Service Diagnostics 5 5 9 Over Pressure Test 8a 8b 8c Select Room Number and Bed Letter per Table 5 7 on page 5 11 Press the NIBP START key to activate the test This test evaluates the ability of the system to prevent an over pressure condition independent of software control for each of 3 over pressure settings A fixed volume of 700 cc s is pumped to a target pressure that is above the maximum over pressure specified for the respective over pressure limit see Table 5 7 on page 5 11 while displaying the
87. nterference Interference on signal Masimo SpO only 8853 Pulse Search Unit cannot find signal Nellcor SpOs Module will report Pulse Search 8853 when the sensor is not on the patient 8854 Weak Pulse Weak pulse detected Masimo SpOz only 8856 Check Sensor Sensor problem Masimo SpOz only 8857 PR 21 Pulse rate is less than 21 bpm Nellcor SpOs only 8857 PR 26 Pulse rate is less than 26 bpm Masimo SpOs only 8858 PR gt 249 Pulse rate is greater than 249 bpm Nellcor SpOs only 8858 PR gt 239 Pulse rate is greater than 239 bpm Masimo SYSTEM 984 NIBP Hardware Failure SpO only NIBP A D failure detected 985 NIBP The overpressure circuit is not set to the current Overpressure patient size Circuit not Programmed 986 NIBP The two pressure transducers are not tracking Overpressure each other Circuit not Tracking 987 Stop Hardware Excessive cuff pressure detected by hardware Overpressure over pressure sensor A triple beep tone is generated 988 TEMP Bad Thermometer needs calibration Calibration 990 TEMP Illegal Thermometer switch is set wrong Mode 991 TEMP Module Thermometer internal failure Failed 995 SpO s SpO fails calibration check Uncalibrated 996 SpO Failure SpO failed self test Accutorr Plus Service Manual 0070 10 0543 Precautions And Guidelines Calibration 5 2 5 3 5 4 Precautions And Guidelines In the event that the instrument c
88. oard 1 Disconnect J 505 NIBP pump connector J 7 SpO interface connector and J 502 Power supply connector all on the top edge of the board 2 Disengage the captive cable connectors for the Recorder and Temperature options at the bottom left and right edges of the board Disconnect gray ribbon cable at J 603 to the external interface connectors Disconnect J 651 the LCD back lite connector Disconnect silicon hose from pump at the right angle elbow Remove the four hexagonal spacers and one Phillips head screw on the board NO gag PF w amp Lift board up gently and disconnect data ribbon cable from J 8 to the LCD display Removal of the Power Supply Assembly 1 Remove AC mains power cord and internal battery Remove rear case 2 Disconnect ribbon cable at J 3 on the power supply Disconnect battery J 3 connector cable NOTE Do not remove the screws located at the end of the circuit board the board will not come out and you may damage internal connections Remove the two screws from the metal chassis heat sink at the top end of the supply 4 Remove the two screws from the metal chassis heat sink at the bottom end of the supply Slide the supply chassis out sufficiently to disconnect J 2 the AC Mains connection Removal of the LCD display 1 Remove the right side support bracket for the LCD Disconnect data ribbon cable 2 Disengage LCD circuit board from left side support bracket and disconnect back lite cab
89. olated logic control for the processing circuits of the oximeter The optically isolated up converter U1 convert the 5 VDC from the main power supply into an input voltage for U6 of about 5 VDC The precision down converter U6 steps down and regulates the 5 VDC voltage for the digital sections of the oximeter circuit The optically isolated up converter U2 convert the 5 VDC to a bi polar 9 and 9 VDC input for U4 and U5 then regulated to 5 and 5 VDC The logic control section consisting of U1 U2 and U3 provide the buffer and isolation from the main CPU circuit to the Nellcor oximeter section Nellcor MP506 SpO Circuit Board Theory of Operation The MP506 is a complete SpO detection and determination circuit proprietary of Nellcor Puritan Bennett The MP506 is comprised of an ATMEL AT91R40807 micro processor U22 driven by a 32 Mhz oscillator Y 2 The processor is supported by on board RAM and external Flash Program Memory U24 Patient information is initially processed under the control of a PIC micro controller U17 The resulting data is then routed into separate red and infra red demodulation circuits Patient data is then processed for serial transmission to the host system Nellcor MP506 Interface Board Theory of Operation The Nellcor amp MP506 interface circuit board 0670 00 0740 establishes bilateral communication and control of the Nellcor MP506 Oximeter circuit board The circuit board consists of a power
90. om Number and Bed Letter per Table 5 9 on page 5 12 and press the NIBP START key to activate the test This test measures the average noise for each of three electronic gain settings available on the pulse channel Results for each gain setting are displayed in the Timer Temperature display in millivolts Table 5 9 on page 5 12 describes the tests performed Table 5 9 ACCEPTABLE TEST ROOM SUB TEST PATIENT TEST DESCRIPTION LIMIT MV NUMBER BED LETTER Gain 1 Low Test 25 10 a Gain 2 Med Test 50 10 b Gain 3 High Test 75 10 c Main Pressure Transducer Verification Test 11a 11b 11c This tests the calibration of the main pressure transducer in LOW MED and HIGH modes This is done by comparing the readings of the UUT to an external pressure gauge in LOW mode below 100 mmHg in MED mode between 100 mmHg to 200 mmHg and in HIGH mode between 200 mmHg to 300 mmHg In the event of a disagreement between the device and an external gauge the transducer must be calibrated by performing the calibration in section 5 5 15 Main Pressure Transducer Calibration on page 5 14 1 2 Select diagnostic test 11 Room a Bed Press the START NIBP key to start the LOW calibration test Verify that the pump comes on the pressure increases and then the pump stops After 10 seconds verify that the pressure settles below 100 mmHg Compare the final pressure displayed to an accurate external pressure gauge The MAP LEDs r
91. ont bezel no SpO option 0334 00 1509 01 14A Label front bezel w Datascope SpO5 0334 00 1509 02 14B Label front bezel w Nellcor MP304 SpO 0334 00 1509 03 14C Label front bezel w Masimo SpO 0334 00 1509 04 14D Label front bezel w Nellcor MP506 SpO 0334 00 1509 05 15 Chassis 044 1 00 0173 16 AC mains power inlet w cable 0012 00 0941 17 Ground lug 0124 00 0104 06 19 Battery Lead Acid 0146 00 0043 19a Battery Lithium Ion 0146 00 0069 20 Battery retainer w connector cable for Lead Acid 0406 00 0808 Battery Replacement serial number labels are only provided upon return of the old label with unadulterated serial number clearly visible An identical serial number label will be provided at a nominal cost Accutorr Plus Service Manual 0070 10 0543 4 7 Isometric Drawings And Parts List FIGURE NO 20a Replacement Parts Isometric Drawing DESCRIPTION Battery retainer w connector cable for Lithium Ion Battery PART NUMBER 0997 00 097 1 26 Release handle 0380 00 0268 27 Rear housing complete with pole cam and release handle 0380 00 0357 02 28 Interface cable CPU NIBP board to power supply 0012 00 1404 29 reserved not used 30 CPU NIBP circuit board for units with LCD displays 0670 00 1143 01 30a CPU NIBP circuit board for units without LCD displays 0670 00 1143 02 37 Compressor for NIBP 12 VDC 0104 00 0008
92. out TEMP_RXD 7 Input TTL serial in SpO _TXD 8 Output TTL serial out SpO RXD 9 Input TTL Level SpO gt 10 Output TTL Level SpO RST 11 Output 9 17 3 VDC STDBY 12 Output ground aground 13 Output 5VDC 2 supply VCC 14 Output VCC 15 Input logic low 0 8V max PRED 16 Input Predictive Temp module pRED attached 17 Output ground DGND 18 Input logic low 0 8V max SpO _OPT2 SpO option 2 installed 19 Input logic low 0 8V max IR TYMP Temp module attached 20 Input logic low 0 8V max SpO OPT1 SpO option installed SpO Connector J 7 PIN INPUT OUTPUT DESCRIPTION NAME 1 Output 15V supply 5 15V 2 Output Analog ground AGND 3 Output 15V supply 5 15V 4 Output 5V supply 5 5V 5 Input TTL serial in SpO _TXD 6 Input SpO module installed SpO gt logic low 0 8V max 7 Output TTL serial out SpO2_RXD 8 Output ground DGND 9 Output TTL module reset SpO2RST 10 Output ground DGND 0070 10 0543 Accutorr Plus Service Manual Repair Information Interconnect Cables Run List 3 7 1 8 NIBP Pump Connector J 505 PIN INPUT OUTPUT DESCRIPTION NAME 1 Output pump supply filtered 12 5V supply 2 Input pump return 12 5V return 3 Input power ground P power ground 3 7 1 9 Backlight Connector J 651 PIN INPUT OUTPUT DESCRIPTION NAME 1 Output 100Vrms 10 ELPower 300 to 500 Hz 2 N C 3 Output Return PGND
93. overs are removed observe these following precautions and general guidelines Do not short component leads together e Perform all steps in the exact order given e Use extreme care when reaching inside the opened instrument Do not contact exposed metal parts which may become live Read through each step in the procedure so it is understood prior to beginning the step Test Equipment And Special Tools Required Equipment types other than these listed may be utilized if they perform the required functions e Dynatech Nevada Non Invasive Blood Pressure Simulator Cuff Link e Power Supply Power Mate 3A 20V e Fluke DVM Model 8050A Digital Storage Scope Tektronix 2230 100MHZ Stop Watch Wilson LW 19 e SpO Simulator Biotek Index e RS232 Test Connector pins 2 and 3 shorted 9 pin male D e 700 cc Dummy Cuff 0138 00 0001 01 Chart Paper 0683 00 0447 01 Water Bath Cole Palmer model H 12 105 10 Reference Quartz Thermometer Hewlett Packard model HP 2804A with Temp Probe HP 1811A NOTE Not approved for sale to customers in CE countries Power up Sequence Internal Testing 1 Attach the AC power cord into the UUT rear panel AC Input Module 2 Press the ON STANDBY key to turn the UUT On The UUT automatically performs internal self diagnostics Verify that all the LED s Light Emitting Diodes display a series of scrolling LED tests or a countdown from 20 towards 0 zero After the
94. r head Insert the head into the floating Black Body cavity such that the instrument is looking into the needle shaped end Accutorr Plus Service Manual 0070 10 0543 5 17 Predictive Thermometer Verification And Calibration Calibration 5 6 4 5 18 8 Press the button to measure the temperature Record the temperature as TpcALC 9 Select the appropriate correction factor from the following choices 10 Core temperature correction Kcore 1 087 11 Oral temperature correction Kora 1 058 12 Rectal temperature correction Krectal 1 095 13 The standard infrared thermometer is calibrated to indicate Core temperature thus the correction factor to be used is K 1 087 14 Calculate the display temperature according to the following formula K TT TA Ta Tacajc Where Tacalc is Calculated Display Temperature Kcore 1 087 Correction Factor for Core Temperature Ty is Target Temperature Ta is Ambient Temperature Sample Calculation Ambient temperature T measured 72 F Water Bath temperature TT measured 98 6 F Correction Factor Kgo 1 087 1 087 98 6 72 72 100 9 F thus Temperature displayed by thermometer is 100 9 F and calculated temperature is 100 9 F the accuracy has been verified Temperature value deviations The calculated value is a function of the accuracy of the water bath temperature As an example a 1 reading error of water temperature will result in a 1 F reading input into the
95. rface Board Theory of Operation esses 1 10 Nellcor MP506 SpO Circuit Board Theory of Operation esses 1 10 Nellcor MP506 Interface Board Theory of Operation esssseeeeeeeeeeeeeene ene 1 10 Masimo SET Technology oeste eei tite nto tee Urt ee ERR ps KESTE KEE RES 1 11 Masimo Interface Board Theory of Operation sese 1 11 Communications Board ueteri e e ec hes bevees dh ue cease guienses he Boasts 1 12 LED Inverter Power Supply entem erepta det ed ee EEE s 1 12 DG to AC MEA ERI 1 12 Accutorr Plus Service Manual 0070 10 0543 i Table of Contents Current 5 WICb nece etre DR iinet anion SUE SOI RU E Teste iets 1 12 Power Supply Module REI 1 13 Power Requirements eo eer eb iae seeds vest re p sees eem eter 1 13 Main Power Supply 52 toe uet e Ute n ed eG RR ERREUR 1 14 IB TU SIMPEL 1 14 Sealed Lead Acid battery neuere qe tpe ries 1 14 Lithium Ton Battery sa oot dE eR eet EH gri RE ES 1 15 LED and Tone Module n entree eet op Meter e ner CO PHI HR eR 1 15 Keypad Control pese eee te tee gd e e Ana eh etiem 1 15 Sp cifications TR 2 1 Performance Specifications ee UTD UP HER erbe e e terere bei T 2 1 NIBP Measurement Cycle Time sese eene emet en net rete en rennen nennen 2 1 Pulse Rates H 2 2 Maximum Cutt Pressure eet ee pee pee pee Dep tet tede rire e
96. rical Ratings 2 5 2 6 2 7 Specifications Electrical Ratings Voltage 100 120 220 240 VAC Current 0 6 0 3 A Frequency 60 50 Hz Power Consumption 40 W maximum Agency Compliance The Accutorr Plus is designed to comply with the following agency standards EN 60601 1 1990 Medical Electrical Equipment General Requirements for Safety UL 2601 1 1994 CSA C22 2 No 601 1 M90 EN 475 1995 Medical Devices Electrically Generated Alarm Signals EN 865 1997 High End units only Pulse Oximeters for Medical Use Requirements EN 60601 2 30 1995 Particular requirements for the safety of automatic cycling indirect blood pressure monitoring equipment IEC 601 1 2 2001 Particular requirements for safety EMC EMC Requirements per FDA Reviewer Guidance for Premarket Notification Submissions draft November 1993 Section m 7 ii for e Steady State Voltage e Dropout Slow Sags and Surges e Quasi Static Field Susceptibility Electromagnetic Compatibility The Accutorr Plus has been tested and found to comply with the requirements of IEC 60601 1 2 2001 Collateral Standard Electromagnetic Compatibility Requirements and Tests To ensure Electromagnetic Compatibility EMC operate the Accutorr Plus in accordance with the instructions for use To prevent the possibility of other equipment affecting the Accutorr Plus insure adequate distances are maintained between devices 0070 10 0543 Accutorr Plus Service M
97. rr Plus and optional accessories Inspections and replacement of consumable supplies and accessories that are subject to normal wear must be accomplished at least as frequently as the inspection of the host unit Read the Warranty statement in the Operating Instructions for description of warranty conditions The suggested minimum maintenance schedule is based on normally expected wear and tear of system and components The intervals may be shortened at the user s discretion when conditions of use may warrant In case of internal instrument failure component replacement and possible or actual instrument damage it is strongly recommended that complete performance and safety verification be conducted 6 3 1 Mechanical and Physical Visual Inspection One Year Interval Check the following items for wear and physical damage Repair or replace as needed Outer case of Accutorr Plus Recorder and Temperature module Patient connected accessories such as blood pressure cuffs and hoses and related connectors Check the SpO sensor and cables Check the temperature cables and probes Verify and replenish the disposable items as needed i e probe covers recorder chart supply e Power cords external safety ground connections and communication cables 6 3 2 Electrical Safety and Performance Checks One Year Interval Line power and battery power indicator lights functional in the proper modes Line power and safety grounds are intact
98. rr Plus model with SpO5 Calibration 5 10 SpO Normal Operation Accutorr Plus model with SpO NOTE This procedure can be accomplished with the Biotek Index SpO gt simulator or an equivalent SpO simulator The purpose of this test is to verify that an SpO signal is recognized alarm limits are captured and the data is trended A full operational test may be conducted if so warranted within the limits of the published specification See chapter 3 of this manual for specifications 1 Set the simulator to an SpO saturation level of 98 pulse rate of 60 bpm and a pulse amplitude of 10096 2 Set the Accutorr Plus SpO HI alarm limit to 95 and the pulse rate HI alarm limit to 55 bpm 3 Connect an NIBP cuff or a suitable simulator to the Accutorr Plus and start a measurement 4 Confirm that the Accutorr Plus has determined an SpO saturation level and has violated the SpO HI alarm and the pulse rate HI alarm flashing digits and alarm tone Press the MUTE key to silence the alarms Check the trend screen to confirm that the measurement information has been saved 6 Set the SpO HI alarm to OFF and SpO LOW alarm to 86 7 Set the simulator to an SpO saturation level of 90 pulse rate of 95 bpm and the pulse amplitude to approximately 10 low perfusion Masimo SpO only 8 The Accutorr Plus may intermittently determine SpO gt values or indicate a status code of 8853 Pulse Search or 8854 Weak Pulse Low Per
99. s than 4 seconds Automatic 70 to 100 2 digits 70 to 100 3 digits 40 to 69 SpO unspecified 70 to 100 3 digits 7096 to 100 4 digits 26 to 239 BPM 3 BPM 0070 10 0543 2 3 Performance Specifications Specifications The Masimo MS 3 pulse oximeter with LNOP Adt sensors have been validated for no motion accuracy in human blood studies on healthy adult volunteers in induced hypoxia studies in the range of 70 to 100 SpO against a laboratory co oximeter and ECG monitor This variation equals plus or minus one standard deviation Plus or minus one standard deviation encompasses 68 of the population The Masimo MS 3 pulse oximeter with LNOP Adt sensors has been validated for motion accuracy in human blood studies on healthy adult volunteers in induced hypoxia studies while performing rubbing and tapping motions at 2 to 4 Hz At an amplitude of 1 to 2 cm and non repetitive motion between 1 to 5 Hz At an amplitude of 2 to 3 cm in induced hypoxia studies in the range of 7096 to 10096 SpO against a laboratory co oximeter and ECG monitor This variation equals plus or minus one standard deviation Plus or minus one standard deviation encompasses 6846 of the population The SPO accuracy during motion conditions is not specified for the LNOP Ear Sensors The LNOP Ear Sensors have an SPO accuracy of 70 to 100 3 5 for adults during no motion conditions however since the monitor cannot display 1 2 digits th
100. so evaluates the ability of the system to reduce cuff pressure quickly A fixed volume of 700 cc is pumped to approximately 20 mmHg over the specified start pressure see Table 5 6 on page 5 10 then vented to atmosphere through one of two different valves During the test the MAP display indicates the real time system pressure and the Timer Temperature display indicates the elapsed time in seconds When the stop pressure is reached the MAP display is blanked and the elapsed time displays the current reading Pressing the DEFLATE key ends the test and deflates the chamber Pressing and holding the DEFLATE key for three seconds clears the MAP display and exits the test Each test is uniquely identified in the Patient Bed Letter Display as described in Table 5 6 on page 5 10 The table identifies each test the corresponding start and stop pressures and required completion times Table 5 6 SUB TEST START STOP TEST PATIENT TEST PRESSURE PRESSURE TIME ROOM BED DESCRIPTION MMHG MMHG SEC NUMBER LETTER Linear Bleed Valve 180 60 15 25 6 a Test Secs Dump Valve Test 250 20 14 sec 6 b max Leak Test 7 Select Room Number 7 and press the NIBP START key to activate the test This test evaluates the ability of the system to maintain a steady pressure A fixed volume is pumped up to an initial differential pressure of approximately 250 mmHg and monitored for a fixed period of time While the pump is operational peak pressure is displayed i
101. supply section that converts the system 5 VDC into the logic and analog supplies required by the oximeter and optically isolated logic control for the processing circuits of the oximeter A 5V to 10V DC DC converter T1 and two voltage regulators U4 and U5 generate the required digital 5VD and analog 45VA voltages Regulator U4 also provides optocoupler U1 and protection array U6 with power The logic control section consisting of U1 U2 and U3 provide the buffer and isolation from the main CPU circuit to the Nellcor amp MP506 oximeter section 0070 10 0543 Accutorr Plus Service Manual Theory of Operation SpO Processor Circuit Boards 1 3 6 Masimo SET Technology Masimo SET Technology combines advances in fundamental sensor technology digital signal processing an easily portable platform and a low noise hardware platform incorporating multiple wavelengths applicable to many physiological parameters Masimo SET Technology is composed of three components 1 new signal processing apparatus 2 anew method for invivo measurement and 3 new sensor technologies The main benefit of Masimo technology is the effective cancellation of unpredictable in band noise noise which is in the same frequency phase and or amplitude space as the desired signal Conventional fixed filters whether analog or digital form have been designed to pass certain frequencies while rejecting others For example a bandpass filter with a lower
102. the battery operation LED Steady ON indicates battery operation A flashing LED indicates a near depleted battery If the green LED is NOT On then the battery or power supply charger may be suspect Confirm correct operating parameters selection i e correct patient size selection Adult Neonate Ped and NIBP cuffs to match In units with SpO verify that a sensor is connected to the unit and it is of the proper type size Verify the proper battery charge profile is selected for the installed battery 0070 10 0543 Accutorr Plus Service Manual Repair Information Troubleshooting Problem Isolation 3 5 2 Isolating the Problem within the Main Unit Problems within the main NIBP and or SpO unit are categorized broadly into power supply problems and NIBP and or SpO detection and display For a monitor that will not even turn on proceed to Power Supply and Battery Tests otherwise skip to Diagnostics Test and beyond 1 Power Supply and Battery test The main power supply output voltages should be verified under normal instrument loads Below are the tolerances for the voltages shown 5V 4 9 5 1 12 5V 12 13 15V 14 5 15 5 2 Perform Diagnostics Test 01 through 12 Repair or replace circuits or components that fail the Diagnostic Test 3 Trendcircuits test Obtain a minimum of five NIBP measurements and simultaneous SpO and Temperature readings if the Accutorr has those options Confirm Trend storage function as
103. tile memory 1 2 4 6 Battery Backup Voltage Regulator Circuitry Implements regulation of the STANDBY VOLTAGE from the main power supply to 4V 0 2V dc with a current draw of 821 uA max 1 2 4 7 Real Time Clock This device provide seconds minutes hours date of the month month and year with leap year compensation The device is memory mapped to be pointed to as software requires Also provisions for running this device include main power supply and battery operation in order for the RTC to keep time when system is not powered up A lithium battery is included with a minimum of 10 years of operation for configuration and clock data retention during battery changes and main battery failure Accuracy is 2 minutes month 1 2 4 8 Recorder Interface IDMA capability for writing 8 bit buffered parallel data to the recorder Handshaking signals to specify new line to be printed request for next byte of data 1 2 4 9 Communication Module The module provides the following interfaces and functions e RS 232E or RS 485 drive from TTL levels RS 232E driver for CIS HIS that will provide minimum of 9V signal level IC based DC DC converter capable of converting VCC to 12VDC with leakage current when off 100uA High frequency operation to limit emitted fields Capable of providing an output current of 125 mA 12Vdc with an efficiency of 80 or higher Logic control the DC DC converter that is used for the RS 485 interface drive
104. tor and connect a 700 cc test chamber to the open port of the simulator Select the manometer function of the simulator 2 Select diagnostic test 11 Room d Bed 3 Press the START NIBP Key to start HIGH calibration procedure 4 Pump up the Cufflink simulator to 158 1mmHg 5 Allow pressure to stabilize for 10 seconds Read the pressure in the MAP display 6 Adjust R540 on the 0670 00 1143 PCB until the MAP readout is the same as the simulator s manometer reading 7 Press the DEFLATE key to exit this test Repeat 5 5 12 Main Pressure Transducer Verification Test 11a 11b 11c on page 5 12 5 5 16 Over pressure Transducer Calibration NOTE This procedure should only be performed if a failure occurred in steps 1 through 3 of 5 5 14 Over pressure Transducer Verification lt 12c 12a 12b gt on page 5 13 This is the procedure for calibrating the over pressure transducer in the event that the display does not read 158 mmHg during the test for Low pressure mode in 5 5 14 Over pressure Transducer Verification lt 12c 12a 12b gt on page 5 13 The transducer is calibrated using R504 on the 0670 00 1143 PCB 1 Adjust R4 on the 0670 00 0584 01 PCB or R504 on the 0670 00 1143 PCB until the MAP readout is 158 mmHg Repeat 5 5 14 Over pressure Transducer Verification lt 12c 12a 12b gt on page 5 13 0070 10 0543 Accutorr Plus Service Manual Calibration Service Diagnostics OIP Adjust p
105. ture with a separate precision thermometer 2 Snap a protective sheath onto the temperature probe and immerse into the reference water bath for 30 seconds or until the temperature display stops flashing Record the temperature shown on the temperature display 3 Apply the correction factor shown in Table 5 10 on page 5 16 to obtain the calibrated measurement Table 5 10 CELSIUS READOUTS FAHRENHEIT READOUTS Range Subtract Range Subtract 32 0 to 41 0 0 6 89 6 to 102 0 1 1 41 0 to 43 0 0 5 102 1 to 106 0 1 0 106 0 to 110 0 0 5 4 Compare readouts after correction factors are calculated Proceed to System Calibration Procedure if readings are out of specification 5 16 0070 10 0543 Accutorr Plus Service Manual Calibration Predictive Thermometer Verification And Calibration 5 6 2 System Calibration Procedure 1 Connect a fresh 9 volt battery or an external power supply set to 9 1V to the predictive thermometer NOTE Newer modules do not contain a 9V battery Skip this step 2 Set SW2 3 to closed position the switch is towards the PCB Connect resistor decade box to the temperature probe connector Set the decade box to 8343 ohms 2 ohms NOTE All other settings of SW2 should be in the open position away from the PCB Connect the DVM to J4 2 and J4 7 output jacks Jumper J4 2 and ground terminal J2 1 jacks Switch power supply on or turn on the AccutorrPlus Adjust R1 until a readin
106. vice Manual 0070 10 0543 2 5 Safety Characteristics 2 2 2 2 1 2 2 2 2 2 3 2 2 4 2 2 5 Specifications Safety Characteristics Risk Leakage Currents Enclosure Risk Current leakage Less than or equal to 100uA in normal operating conditions Less than or equal to 300 uA in any single fault condition Patient Source Current Less than or equal to 10uA in normal operating conditions Less than or equal to 50uA in any single fault condition Patient Sink Current Less than or equal to 50uA Dielectric Withstand 2500V RMS at 50 or 60 Hz for 1 minute from any patient lead or combination of patient leads to the chassis 1500V RMS at 50 or 60 Hz for 1 minute AC mains hot or neutral to the chassis Ground Resistance Ground resistance less than or equal to 0 1 ohm from the AC mains power inlet module s ground contact pin to any exposed metal part which may become energized when measured per UL 544 and IEC 601 1 A ground resistance of up to 0 2 ohm is allowed when measured from the U blade of the supplied AC line cord to any exposed metal part which may become energized Type of Protection Against Electric Shock Class 1 with internal electric power source Where the integrity of the external protective earth ground in the installation or it s conductors is in doubt the equipment is operated from it s internal electric power source Degree of Protection Against Electric Shock Monitor Type B applied part

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