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1. 5 4 Service Diagnostics eeeeeeneeeeennn enne nnn 5 5 Predictive Thermometer Verification And Calibration 5 16 Setting the Current Time eene 5 18 NIBP Normal Operation eeeeseeeeeseeeeeerennen nenne 5 19 Trend Memory Initialization eene 5 19 SpO2 Normal Operation Accutorr Plus model with SpO2 5 20 0070 10 0691 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 accidental overload of the power source To re initialize the low battery detector circuits reconnect the battery at the conclusion of all tests whi
2. PIN INPUT OUTPUT DESCRIPTION NAME 35 Input Output Damped Data Bus D 8 D_DAMP_CONN 8 36 N C N C N C 37 Vcc return D digital ground 38 5V Supply VCC 39 Output Clock O CLKO_CONN 40 5V Supply VCC 41 Vcc return D digital ground 42 Input Keypad Data Bus DO KEYDO 43 Output Damped Address 2 A_DAMP_CONN 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 DAMP CONN 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_DAMP_CONN 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 DAMP CONN 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_DAMP_CONN 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_DAMP_CONN 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 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 0070 10 0691 Accutorr Plus Service Manual Repair Information Interconnect Cables Run List PIN INPUT OUTPUT DESCRIPTION NAME 75 SpO gt RESET SpO2RST 76 12V 15V ON 12V 1
3. 1 2 1 2 CPU NIBP Module Assembly with LCD Display 1 3 1 3 SpO2 Processor Circuit Boards eeeeeeeeseesesss 1 11 1 4 Main Power Supply ca reee aae ra eaae ara er aanta aaao renata a naana na 1 14 1 5 LED and Tone Module 0 cccccsceeeeeeeeeeeeeeeeeeeeseneeeeseeaneeeeeeeeeeeeeens 1 16 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 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 0691 1 1 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 Interface and SpO Processor Bo
4. Ground Lugs m Part of Item 16 Ki ps IAE TT 11 PLUS Red Wire MINUS White Wire FIGURE 4 5 SJSI sueg pue s6ulmelg 2ujeuios s6uimelg 2ujeuios pue sueg jueuieoejdeM Jenueyy 92149S snjgd uojnoov 1690 01 0400 Tube B Tube A n ine Filter 0378 02 0004 not shown Tube B Tube A Main Pressure Transducer Dump Valve In Line Filter 0378 02 0004 coeoocoo i Proportional Measurement Valve Tube A Tube A Silicon 1 8 ID 0008 10 0408 Tube B Silicon 1 16 ID 0008 10 0206 ANNNNNNNNNANNNNNANNN S Over Pressure Transducer wi Tube a Tues to Bezel NIBP Fitting Plug FIGURE 4 6 Non invasive Tubing Diagram s6uimelg 2ujeuios pue seg jueureoejdos SJSI sueg pue sBuiweig oujeuios Accessory Modules and Mounting Parts Lists Replacement Parts and Isometric Drawings 4 8 Accessory Modules and Mounting Parts Lists 4 8 1 Recorder Module Replacement Parts List DESCRIPTION PART NUMBER Chart Paper Door 0380 00 0274 Chart Cutter 0380 00 0275 Recorder Main Housing 0380 00 0273 01 Printer Assembly with printhead 0161 00 0015 Recorder complete 0998 00 0127 4 8 2 Predictive Temperature Module Replacement Parts List DESCRIPTION PART NUMBER Temperature probe input connector 0012 00 1335 Temperature probe Adult Oral 0206 00 0725 01 Temperature probe Adult Rec
5. ssseeeee 1 11 Nellcor Nell 3 Interface Board Theory of Operation eri eerte den 1 12 Masimo SET Technology iens d RR RERO tein a Ae eae dacs 1 12 Masimo9 Interface Board Theory of Operation 1 12 Main Power Supply m e ERR ete I E tee m Ree IA eee IE 1 14 Deet ine ders RR EEG NR SERA TR EYE GA ISTE 1 14 Power Supply Output Voltages ds dede hr e ERR RR ER Ee 1 14 Lithium Ion Battery and Charger sss 1 14 LED and Tone Module nent detects HENNEN EE eed a 1 16 Accutorr Plus Service Manual 0070 10 0691 iii Table of Contents Keypad Control ed eh tA He en ed ee 1 17 Specifications M 2 1 Performance E e EE 2 1 NIBP Measurement Cycle Tme sess eere en n ennt ener 2 1 Pulse Rate 15 tout PR ORTHO ROSEO OR eds 2 2 Maximum Cuff Pressure tee gen pied extet cede AE 2 2 genee 2 2 Teale Rate iaisos LE eegene Deene eege 2 2 ERR WE 2 2 Temperature Predictive 2 5 2 se SORS II ee ire ind die See 2 2 Neu Ma ch f LN MI ue E 2 3 Masimo e EE 2 3 Battery unidos ose EE EE 2 5 Real Time E 2 5 Safety Characteristics 5 2 od xe dere OA ie RA a anemone Ren 2 6 Risk Leakage C rrents eiit etie tete ne e e E dee eR ERREUR 2 6 Dielectric Wathstands ane ner E ERE rt ebur ubt iria Desde te sb A 2 6 Ground RESistance teet ee ERE EE RT ERE IER rr Om Redde 2 6 Type of Protection Against Electric SHOCK sese 2 6 Degree of Protection Against Electric Shock ssssssss
6. 5 100mA 12VT 3 7 1 11 LCD Connector J 8 PIN 6 INPUT OUTPUT DESCRIPTION NAME 1 Out Chassis Ground CHASSIS 2 Out ground DGND 3 Out 5V supply 5 VCC 4 Out View angle control 15V max VEE 5 Out TTL control line WR_LCD 6 Out TTL control line RD_LCD 0070 10 0691 Accutorr Plus Service Manual Repair Information Interconnect Cables Run List PIN INPUT OUTPUT DESCRIPTION NAME 7 Out TTL control line CS_LCD 8 Out TTL address line A_DAMP_CONN lt 2 gt 9 In 10V supply 10V 10 Out TTL LCD reset RESETSRV 11 In Out TTL data line D_DAMP_CONN lt 0 gt 12 In Out TTL data line D_DAMP_CONN lt 1 gt 13 In Out TTL data line D_DAMP_CONN lt 2 gt 14 In Out TTL data line D_DAMP_CONN lt 3 gt 15 In Out TTL data line D_DAMP_CONN lt 4 gt 16 In Out TTL data line D_DAMP_CONN lt 5 gt 17 In Out TTL data line D_DAMP_CONN lt 6 gt 18 In Out TTL data line D_DAMP_CONN lt 7 gt 19 Out ground DGND 20 N C N C N C 21 Out TTL Level A_DAMP_CONN lt 3 gt 22 Out TTL Level A_DAMP_CONN lt 4 gt 23 Out TTL Level DSP_CONT 24 Out TTL Level A_DAMP_CONN lt 5 gt 25 Out 15VDC 15VV 26 Out 15VDC 15VV 3 7 2 Power Supply Connectors 3 7 2 1 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 3 7 2 2 DC output connector J 3 PIN FUNCTION PIN FUNCTION 1 5V 8 Common 2
7. 0330 00 0025 02 NIBP Nellcor SpO2 German 93G 0331 00 0116 04 0330 00 0027 02 NIBP Masimo SpO2 German NIBP only Spanish NIBP Nellcor SpO2 Spanish NIBP Masimo SpO2 Spanish NIBP only French NIBP Nellcor SpO2 French 94G 91P 93P 94P 91F 93F 0331 00 01 16 04 0331 00 01 16 01 0331 00 01 16 04 0331 00 01 16 04 0331 00 0116 01 0331 00 01 16 04 0330 00 0027 02 0330 00 0025 03 0330 00 0027 03 0330 00 0027 03 0330 00 0025 04 0330 00 0027 04 NIBP Masimo SpO2 French 94F 0331 00 0116 04 0330 00 0027 04 NIBP only Italian 91T 0331 00 0116 01 0330 00 0025 06 NIBP Nellcor SpO2 Italian 93T 0331 00 0116 04 0330 00 0027 06 NIBP Masimo SpO2 Italian Must replace Keypad and Graphic Overlay at the same time 94T 0331 00 01 16 04 0330 00 0027 06 s6uimelg 2ujeuios pue sueg juewaoe dey SJSI sueg pue sBuiweig oujeuios 1690 01 0400 Jenueyy eoues snjg Ui ITEM PART NUMBER DESCRIPTION 0012 00 1721 Cable LCD Interface 0012 00 1690 Cable SpO2 to CPU NIBP Interface 28 0012 00 1689 Cable Power Supply to CPU NIBP Interface 30 0670 00 0814 01 PCB CPU NIBP 31 0014 00 0083 02 Power Supply Li lon FIGURE 4 3 SJSI sued pue s6ulmelg 2ujeuios s6uimelg 2ujeuios pue sueg jueuieoejdeM D o s S Q
8. Hour Display TIMERITEMP een INTERVAL ELAPTIME TEMP ALARMS eese nennen e SET Press to Change Press and hold to enter the clock set mode Set hour then press again to set the minute NOTE hour form FIGURE 5 6 Hour Display at The Accutorr Plus always displays time in a 24 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 TIMER TEMP esoe INTERVAL ELAPTIME TEMP After the time ALARMS ssssciseasessseuseeeeseses and Cale Nave Press to Change been set press to exit the clock set mode FIGURE 5 7 Minute Display 0070 10 0691 Accutorr Plus Service Manual Calibration NIBP Normal Operation 5 8 NIBP Normal Operation 1 Press the left ARROW key on the NIBP simulator to highlight SELECT BP then press the ENT key Set pressure test to 120 80 90 and press the ENT key 2 Select a NIBP simulation of 120 80 mmHg with a Heart rate of 60 BPM 3 Attach the NIBP simulator to the input pressure fitting of UUT 4 Press the INTERVAL key of 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 5 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 130 mmHg 6 Press the Set ALARMS key again an
9. W x 9 H x 4 25 D Predictive Module 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 Weight 4 95 kg 11 pounds depending on configuration 2 4 Environmental Characteristics Operating Temperature 10 C to 40 C 50 F to 104 F Accutorr Plus amp Recorder 10 C to 32 C 50 F to 90 F Predictive Thermometer Humidity 15 to 90 max non condensing Altitude 1013 hPa to 697 hPa 0 to 10 000 ft Shock and Vibration Meets IEC 60068 2 27 for shock with peak acceleration of 15g 11 mSec duration half sine Meets EN 60068 2 64 for random vibration with frequencies of 10 to 2000 Hz resolution of 10Hz 10 minutes per axis acceleration spectral density of 10 Hz to 100 Hz 1 0 m s2 2 Hz 100 Hz to 200 Hz 3 dB per octave 200 Hz to 2000 Hz 0 5 m s2 2 Hz Shipping Meets ISTA Test Procedure 1A less than 100 Ibs Storage Temperature 15 C to 60 C 5 F to 140 F Humidity 10 to 95 non condensing Accutorr Plus Service Manual 0070 10 0691 2 7 Electrical Ratings 2 5 2 6 Electrical Ratings Voltage Current Frequency Power Consumption Agency Compliance Specifications 100 120 220 240 VAC 0 85 0 5 A 60 50 Hz 40 W maximum The Accutorr Plus is designed to comply with the following agency standards Safety IEC Safety UL Safety Canada Safety collateral Multifunction SpO2 particular NIBP particular NIBP IEC NIBP supplementary NIBP USA P
10. 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 1s achieved by pulse width modulating 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 0691 1 5 CPU NIBP Module Assembly with LCD Display Theory of Operation 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 dicrotic notch or noise is minimized Artifact Rejection Requirements The software provides means of artifact rejection both during acquisition and during subsequent processing of the p
11. 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 70 to 100 SpO2 against a laboratory co Oximetry and ECG monitor This variation equals plus or minus one standard deviation Plus or minus one standard deviation encompasses 68 of the population 3The Masimo MS 3 Pulse Oximetry module with LNOP amp Neo and LNOP NeoPt sensors has been val idated for motion accuracy in human blood studies on neonates while moving the neonates foot at 2 to 4 Hz at an amplitude of 1 to 2 cm against a laboratory co Oximetry and ECG monitor This variation equals plus or minus one standard deviation Plus or minus one standard deviation encompasses 68 of the popula tion The Masimo MS 3 Pulse Oximetry module has been validated for low perfusion accuracy in bench top testing against a Biotek Index 2 simulator and Masimo 5 simulator with signal strengths of greater than 0 02 and a transmission of greater than 5 for saturation s ranging from 70 to 100 This variation equals plus or minus one standard deviation Plus or minus one standard deviation encompasses 68 of the population 5 The LNOP Ear Sensors have an SpO2 accuracy of 70 to 100 3 5 digits for adults during no motion conditions however since the monitor cannot display 2 digits the accuracy shall be rounded to 4 digits The SpO2 accuracy during motion conditions is not specified for the LNOP Ear Sensors
12. 3 RS E o Co D 3 x o D 2 2 D 40A NELLCOR a 40B 40C 40D Q o N Es S Ke 53 9 Part of 40B pA SE 7 NELLCOR FIGURE 4 4 N MASIMO ITEM PART NUMBER 15 0997 00 0595 38 0344 00 0249 39 0012 00 1338 40A 0671 00 0066 40B 0670 00 0740 40C 0671 00 0055 40D 0670 00 0716 43 0217 00 0047 44 0221 00 1026 45 0221 00 1018 53 0212 10 0404 DESCRIPTION Assembly Chassis Push Fastener Plastic Cable MS 3 Interface PCB Nellcor SpO2 OEM PCB Nellcor SpO2 Interface PCB Masimo SpO2 OEM PCB Masimo SpO2 Interface Screw Captive Panel Washer Shoulder 145 OD 115 ID Washer Shoulder 185 OD 116 ID Screw Mach Round Head Slotted Nylon Part of 40D 40D B RE MASIMO 40A NELL 3 SET ALL 4 SWITCHES TO OFF POSITION REMOVE KEY FROM 14 PIN CONNECTOR IF INSTALLED 45 s6uimelg 2ujeuios pue sueg jueureoejdos S SI7 sueg pue sBuiweag oujeuios 1690 01 0400 Jenueyy eoes snjg Ui ITEM PART NUMBER DESCRIPTION 6 0012 00 1401 Cable and Connector RS232 Nurse Call Download 10 0361 00 0164 Jack Screws RS232 Connector 11 0012 00 1720 Speaker with Cable 16 0012 00 1692 AC Mains Connector t 17 0124 00 0104 06 Equipotential Lug 17 18 0105 00 0139 Battery Latch gee 20 0012 00 1693 Cable Li Ion Battery Connector 37 0104 00 0008 Pump 12 VDC l 37A 0012 00 1405 Cable Pump me Lock Washer Nut
13. 5 Advanced Nellcor 0998 00 0444 93G 0998 00 0444 93P 0998 00 0444 93F 0998 00 0444 93T Advanced Nellcor IEC French Advanced Nellcor IEC Italian 0998 00 0444 94A 0998 00 0444 94G Advanced Masimo IEC English Advanced Masimo IEC German 0998 00 0444 94P Accutorr Plus Service Manual Advanced Masimo IEC Spanish 0070 10 0691 vii Introduction Notes and Precautions MONITOR PART NUMBER P N MONITOR CONFIGURATION 0998 00 0444 94F Advanced Masimo IEC French 0998 00 0444 94T Advanced Masimo IEC Italian 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 viii 0070 10 0691 Accutorr Plus Service Manual Notes Notes NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE NOTE Accutorr Plus Service Ma
14. 890nm with the energy not exceeding 15mV 1 3 2 Nellcor Nell 3 SpO Circuit Board Theory of Operation The Nell 3 is a complete SpO detection and determination circuit proprietary of Nellcor Puritan Bennett Patient data is processed for serial transmission to the host system Accutorr Plus Service Manual 0070 10 0691 1 11 SpO Processor Circuit Boards Theory of Operation 1 3 3 1 3 4 1 3 5 Nellcor Nell 3 Interface Board Theory of Operation The Nellcor Nell 3 interface circuit board 0670 00 0740 establishes bilateral communication and control of the Nellcor Nell 3 oximeter circuit board The circuit board consists of a power 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 US generate the required digital 5VD and analog 5VA 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 Nell 3 oximeter section 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 physi
15. LA 3 19 SpO5 Connector Ja x teint ir eene tret ee oet tei EE eir prete E 3 19 NIBP Pump Connector J 505 1e te ee estote deter eren tete EEN 3 20 LED Backlight Connector J 65 L4 ete ett ege 3 20 Communication Connector Lei 3 20 LED Connector J 8 ue Ett teeth eR e AE e e DNE 3 20 Power Supply Connectors S Rete ee eie de e ede to p A e e NU 3 21 AC input connector J 2 ikea e eR VR e eg ti teres eet HER e E 3 21 DC output connector 73 55 ind dais dehet bgee me 3 21 Battery connector J 4 7 o ee ergo rete EH dedere ren hte ete Es 3 22 Replacement Parts and Isometric Drawings eee eese eee eene teens tta sense ta sets tosta se enean tns tnae 4 1 reg te e 4 1 Available Replacement Parts And Sub Assembltes sse 4 1 Product Variations And Options ee e ER e ER ee tees 4 1 Excliange Progtam eene ee dpt Rp ERR ER Ee 4 2 Replacement Parts Pricing Information sess nnne nnne nennen 4 2 Ordenne Information Ree dei vg ee 4 2 Isometric Drawings and Parts Lists ierre eee ete o E ESI le peu DEN 4 3 Accessory Modules and Mounting Parts Liste 4 10 Recorder Module Replacement Parts List 4 10 Predictive Temperature Module Replacement Parts List 4 10 Universal Rolling Stand P N ACCTROLLSTD Assembly Parts Lie 4 11 Mou ntuig Options rete oie OR OE PRI Me oS t este a n ite 4 12 eric 5 1 dree Le e EE 5 2 Status and Error Code RE 5 2 Erron CODES
16. 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 to release the pressure clear the MAP display and end 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 after the test is completed will clear the MAP display and exit the test Over Pressure Test 8a 8b 8c NOTE 700 cc dummy cuff must be used Select Room Number and Bed Letter per Table 5 6 on page 5 10 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 6 on page 5 10 while displaying the 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 maximu
17. Preventive Maintenance 6 1 ld re e T de BEE 6 1 6 2 Limitations Of Physiological Simulators 6 1 6 3 Preventive Maintenance Schedule eren 6 2 6 1 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 1s important to note that 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 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 A
18. Table 5 5 on page 5 9 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 deflates the chamber clears the MAP display and exits the test Each test is uniquely identified in the Patient Bed Letter Display as described in Table 5 5 on page 5 9 The table identifies each test the corresponding start and stop pressures and required completion times Table 5 5 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 Accutorr Plus Service Manual 0070 10 0691 5 9 Service Diagnostics 5 5 8 5 5 9 Calibration Leak Test 7 NOTE 700 cc dummy cuff must be used 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 in the MAP display When the target pump pressure is reached the peak pressure is frozen in the
19. circuits and modules are warranted factory pre tested 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 0691 3 3 Test Equipment Required Repair Information 3 4 Test Equipment Required Equipment types other than these listed may be utilized if they equal or exceed the listed equipment performance e Non Invasive Blood Pressure Simulator e Stopwatch e SpO Simulator e RS232 Test Connector pins 2 and 3 shorted 9 pin male D and software download port tester Phono plug tip and ring shorted 700 cc Dummy Cuff P N 0138 00 0001 01 Chart Paper P N 0683 00 0447 01 Water Bath stirred heated 80 to 120 F Reference Thermometer 0 196 3 4 0070 10 0691 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 LEDs of the Accutorr Plus 3 5 0 1 Error Codes TYPE CODE DESCRIPTION REASON NIBP 8810 Retry Unabl
20. 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 TA 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 7T Attach a disposable probe cover to the thermometer head Insert the head into the floating Black Body cavity such that the instrument 1s looking into the needle shaped end 0070 10 0691 Accutorr Plus Service Manual Calibration Predictive Thermometer Verification And Calibration 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 foll
21. 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 amp SpOs 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 amp SpO5 only 8858 PR gt 239 Pulse rate is greater than 239 bpm Masimo SpO only SYSTEM 984 NIBP Hardware Failure 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 overpressure 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 SpOs SpO fails calibration check Uncalibrated 996 SpO Failure SpO failed self test Accutorr Plus Service Manual 0070 10 0691 Precautions And Guidelines Calibration 5 2 5 3 5 4 Precautions And Guidelines In the event that the instrument covers are removed observe these following precautions and general guidelines Do not short component leads together e Perform all steps in the
22. software overpressure monitor that vents if the pressure exceeds 300 mmHg for Adults 200 mmHg for Pediatrics and 157 mmHg for Neonates If the hardware over pressure circuit is tripped in normal operation then the unit must be turned off and 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 2006 for accuracy 0070 10 0691 Accutorr Plus Service Manual Specifications Performance Specifications 2 1 7 Nellcor SpO Range 70 100 SpO gt Display Resolution 1 SpO SpO2 Response Time 4 5 to 6 5 seconds Display Update Less than 4 seconds Calibration Factory Calibrated to Functional Saturation Accuracy 2 digits from 70 100 SpO Adult 3 digits from 70 100 SpO gt Neonates lt 70 unspecified Pulse Rate Range
23. 04 Label Bezel with Masimo SpO2 27 0380 00 0357 03 Rear Housing complete wl Rear Cover Cap 42 0008 00 0324 Insulator Tube PVC 75 46 0212 12 0420 Screw Rear Housing 4 40 x 1 25 47 0212 12 0608 Screw Rear Housing 6 32 x 500 48 0380 00 0358 02 Battery Door w Plastic Hinge 49 0348 00 0191 01 Rubber Feet Small 50 0348 00 0191 02 Rubber Feet Large 52 0211 00 0140 Screw SpO2 Connector Bezel 53 0212 10 0404 Screw Masimo SpO2 Connector 54 0386 00 0162 Luer Plate 55 0210 09 0025 Lock Washer 56 0220 00 0004 Hex Nut 57 0380 00 0547 Cap Rear Cover s6uimelg 2ujeuios pue sueg jueuieosejdes FIGURE 4 1 Jenueyy 921 49S snjgd uuojnoov ITEM 4 PART NUMBER See Keypad Selection Table DESCRIPTION Keypad 4A See Keypad Selection Table Graphic Overlay 0160 00 0101 0670 00 0815 01 LCD Display LED Tone PCB with SpO2 LED Tone PCB without SpO2 DA 0670 00 0815 02 12 0406 00 0884 e o E eo A 4 EZ a FIGURE 4 2 a Bracket LCD Monitor Configuration NIBP only English NIBP Nellcor SpO2 English Keypad Selection Table Monitor Part Number 0998 00 0444 91A 93A Keypad Part Number 0331 00 0116 01 0331 00 0116 04 Graphic Overlay Part Number 0330 00 0025 01 0330 00 0027 01 NIBP Masimo SpO2 English 94A 0331 00 01 16 04 0330 00 0027 01 NIBP only German 91G 0331 00 0116 01
24. 14LTTI NVRAM AC NHE SSL 512K x 8bit 512 x l bit DS1642 ON OFFSW Ctrl x2 2K x 8bit FIGURE 1 1 CPU Block Diagram Accutorr Plus Service Manual 0070 10 0691 1 9 CPU NIBP Module Assembly with LCD Display Theory of Operation DUMP BLEED k RATE LINEAR VALVE DRIVE LINEAR L an CN SERVO CONTROL y m AMP SERVO GAIN CONTROL J PRESSURE DIFFEREN PNEUMATIC EG COMMECTOR MAN FOLD je IYE due REF i Y 15VF x AMP AVE A PUMP svR ar am AX SZT AMP 15VF x x L VR PRESSURE INSTRUM Hop OVPR DET OFFSET AND AMP AND lt PRESSURE CLAMPING GAINCAL TRANSDUCER I sm J sv SVR HVF AVF Y v FE i a D SE VARIABLE Le y OFFSET amp GAIN AMP FILTER CAMPING L A _ D_DAMM FED 1VF GAIN FILTER Seg CONTROL RESET roc _ gt x x f AD CS AN GANI CLEAR CLKO FIGURE 1 2 NIBP Block Diagram 0070 10 0691 Accutorr Plus Service Manual Theory of Operation SpO Processor Circuit Boards 1 3 SpO Processor Circuit Boards The Accutorr Plus can be equipped with one of two optional technologies Nellcor SpO gt system Masimo SpO system Each technology uses proprietary sensors and interface cables There are no adapters possible or available 1 3 1 SpO General Theory Of Operation Regardless of manufa
25. 2 4 0070 10 0691 Accutorr Plus Service Manual Specifications Performance Specifications 2 1 9 Battery BATTERY TYPE LITHIUM ION Number of Batteries 1 Battery Voltage 11 1 VDC nominal Battery Capacity 4 4 Amp Hour Battery Run Times from full charge Accutorr Plus basic model 9 5 hours with a new battery at 25 C with 1 NIBP measurement every 5 minutes continuous SpO monitoring and recorder not in use Accutorr Plus advanced models Nellcor 7 hours Masimo 7 hours Recharge Time 4 hours max in STANDBY only 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 STANDBY mode connected to AC mains or running from the 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 Service Manual 0070 10 0691 2 5 Safety Characteristics Specifications 2 2 Safety Characteristics 2 2 1 Risk Leakage Currents Enclosure Risk Current leakage 100uA in normal operating conditions lt 300uA in any single fault condition Patient Source Current lt 10uA in normal operating conditions lt 50uA in any single fault condition Patient Sink Current lt 50uA 2 2 2 Dielectric Withstand 2500V RMS at 50 or 60 Hz for 1 minute from any patient lead or combination of
26. 2008 Mindray DS USA Inc 800 MacArthur Boulevard Mahwah NJ 07430 0619 USA Dom Customer Service 1 800 288 2121 Intl Customer Service 1 201 995 8000 Dom Fax 1 800 926 4275 Intl Fax 1 201 995 8680 Mindray Medical Netherlands B V Drs W van Royenstraat 8 3871 An Hoevelaken The Netherlands Tel 31 33 25 44 911 Fax 31 33 25 37 621 Mindray Medical Germany GmbH Fabrikstrasse 35 64625 Bensheim Germany Tel 06251 17050 Fax 06251 67877 Mindray UK Limited Lakeview Court Ermine Business Park Huntingdon Cambridgeshire PE29 6XR United Kingdom Tel 01480 423600 Fax 01480 423638 Mindray Medical France SARL Europarc Cr teil 123 Chemin des Bassins 94035 Cr teil Cedex France Tel 01 45 13 91 50 Fax 01 45 13 91 51 0002 08 8918
27. 21 to 249 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 6 SpO2 The specified accu racy also takes into account published literature which predicts that there may be a small difference in 96 of SpO2 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 10 to 90 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 70 100 SpO2 Display Resolution 1 SpO Display Update 4 seconds SpO2 Accuracy Saturation during No Motion Conditions Adults Pediatrics 70 to 100 2 digits lt 70 unspecified Neonates LNOP LNCS 70 to 100 3 digits SpO2 Accuracy Saturation during Motion Conditions Adults Pediatrics 70 to 100 3 digits lt 70 unspecified Neonates LNOP 70 to 100 4 digits Neonates LNCS 70 to 100 3 digits lt 70 unspecified SpO Response Time 10 secs Display Averaging T ime is not user selectable for Masimo It will be set to the default value of 8 seconds Accutorr Plus Service Manual 0070 10 0691 2 3 Performance Specifications Specifications NOTE This time was me
28. 5 1 oa PF SO bh a Connect the NIBP simulator to the Accutorr Plus cuff connector and connect a 700 cc test chamber to the open port of the simulator Select the manometer function of the simulator Select diagnostic test 11 Room d Bed Press the START NIBP Key to start HIGH calibration procedure Pump up the NIBP simulator to 158 1mmHg Allow pressure to stabilize for 10 seconds Read the pressure in the MAP display Adjust R540 on the 0670 00 0814 PCB until the MAP readout is the same as the simulator s manometer reading Press the DEFLATE key to exit this test Repeat 5 5 12 Main Pressure Transducer Verification Test 11a 11b 11c on page 5 11 Pressure Adjust R540 FIGURE 5 4 Pressure Adjust R540 0070 10 0691 Accutorr Plus Service Manual Calibration Service Diagnostics 5 5 16 Overpressure Transducer Calibration NOTE This procedure should only be performed if a failure occurred in steps 1 through 3 of 5 5 14 Overpressure Transducer Verification lt 12c 12a 12b gt on page 5 13 This is the procedure for calibrating the overpressure transducer in the event that the display does not read 158 mmHg during the test for Low pressure mode in 5 5 14 Overpressure Transducer Verification 12c 12a 12b gt on page 5 13 The transducer is calibrated using R504 on the 0670 00 0814 PCB see Figure 5 5 1 Adjust R504 on the 0670 00 0814 PCB until the MAP readout i
29. 5 3 0070 10 0691 Accutorr Plus Service Manual Calibration 5 5 7 5 5 7 1 Service Diagnostics Pump Test 5 NOTE 700 cc dummy cuff must be used 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 to release the pressure clear the MAP display and exit the test Pressing the DEFLATE key after the test is completed will clear the MAP display and exit the test Bleed Rate Test 6a 6b NOTE 700 cc dummy cuff must be used Press the NIBP START key to activate the selected test See Table 5 5 on page 5 9 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 also 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
30. 5V 9 12 5V 3 Common 10 STDBY 4 Common 11 ACON 5 15V 12 12 150N Accutorr Plus Service Manual 0070 10 0691 Interconnect Cables Run List Repair Information PIN FUNCTION PIN FUNCTION 6 15V 13 OFF ON 7 Common 14 CHRGOFF 3 7 2 3 Battery connector J 4 Connector Pin Out PIN CONNECTION 1 TS temperature sense 2 Battery 11 1 V 3 Common 3 22 0070 10 0691 Accutorr Plus Service Manual ao Replacement Parts and Isometric Drawings 4 1 Introduction ceret NA EE 4 1 4 2 Available Replacement Parts And Sub Assemblies 4 1 4 3 Product Variations And Options cseeeseeeesees 4 1 4 4 Exchange Program eeeeseeeeeneenne nnne nnne nnn 4 2 4 5 Replacement Parts Pricing Information eese 4 2 4 6 Ordering Information eene rn 4 2 4 7 Isometric Drawings and Parts Lists seeeeee 4 3 4 8 Accessory Modules and Mounting Parts Lists 4 10 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 Prod
31. 5V ON 77 CHARGE OFF CHRGOFF 78 N C N C N C 79 Output A D Chip Select ADC CS 80 PWM CONTROL PWM CNTRL 3 7 1 2 Power Supply Header J 502 PIN DESCRIPTION NAME 1 5V Supply 5V 2 5V Supply 5V 3 5V Return D Digital Ground 4 5V Return D Digital Ground 5 15V Supply 15V 6 15V Supply 15V 7 15V Return A Analog Ground 8 12V Return P Power Ground 9 12V Supply 12V 10 Standby STDBY 11 AC ON ACON 12 12V 15V ON 12 150N 13 OFF ON OFF ON 14 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 LED ENO Accutorr Plus Service Manual 0070 10 0691 Interconnect Cables Run List Repair Information PIN FUNCTION PIN FUNCTION 12 AC On 27 High_Low 13 Key 2 28 LCD_Unit 14 Key 1 29 LED_EN1 15 Key 0 30 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 DX lt 7 gt 2 Output TTL recorder data Buffered Data Bus DX lt 6 gt 3 Output TTL recorder data Buffered Data Bus DX lt 5 gt 4 O
32. Accutorr Plus Service Manual Datascope Patient Monitoring A MINDRAY GLOBAL COMPANY Accutorr Plus is a U S trademark of Mindray DS USA Inc Masimo SET and LNOP are registered trademarks of Masimo Corporation Nellcor OxiMax Oxiband and Durasensor are U S registered trademarks of Nellcor Puritan Bennett Inc Oxisensor is a trademark of Nellcor Puritan Bennett Inc Velcro is a registered trademark of Velcro Industries B V Copyright Mindray DS USA Inc 2008 Printed in U S A All rights reserved Contents of this publication may not be reproduced in any form without permission of Mindray DS USA Inc 0070 10 0691 Accutorr Plus Service Manual Table of Contents COntentS it hed ED EE RU e ied Aen ee Ee vii Foreword it ep esI OU B sh i ee de eee a cee vil Notes atid We ee viii KOI E e ter eere i E A E I ERE ERU TRUE REESE ERA RP OR SEA REDIERE ix NEE X Theory of OperatiON ossis REL noses ssvadecboasnspesesseadesoossouasdnasonnsvovessedesnnesoeassens 1 1 Major Functional Blocks of the Accutorr Plus 1 2 CPU NIBP Module Assembly with LCD Display seeeseseeeeeeeneenennnenennnen enne 1 3 Software OYerVvi6W ere eege Eed RE tr eR ELE FREUD rH 1 3 CPU Hardware Cohtitrols rie eei Fig ertet e EAR 1 4 NIBP Hardware functions neret 1 4 Main pressure transducer circuitry eene eene 1 4 Over pressure transducer Circuitry nennen nnne eren enne 1 4 Five A D channels n bep REDE
33. DECIR 1 5 Pulse Channel Eitem 2 2 att oth bata eed edax a Mee n ee nte ee 1 5 Inflation Pump EE 1 5 EE 1 5 Dump Valve eee re aere ehe ees de 1 5 Cutt Inflation Requirement iss ode cette e etre ertet pesti e ed 1 5 Pulse Acquisition Requirements sssssesseseeeer eere 1 6 Artifact Rejection Requirements eee eet Ras 1 6 Parameter determination Requirements cccceccesssesecssesseceeeseceececeseeecesceeeceseeseeeseceeeaecatens 1 6 Major Hardware Components io essere enne enne nennen nnne nre en nennen nns 1 6 CPUS Lih ce ex M UE MN cL LUE t Eus I Eq 1 6 Flash Memoty ERENNERT 1 6 Battery Backed Up Static RAM sess enne nnne 1 6 Nonyolatile RAM rero irre od RO ben RD RE p do oe 1 6 Micromanagen oeste athe edie rien seek Ee E EE tid ie ete ERE 1 7 Battery Backup Voltage Regulator Circuitry sess 1 7 Real Lime Clock nre Ete ee EE toe ieu tens 1 7 Recorder Interface 6er rne ree he e PEE nhe 1 7 Communication Block ee 31 1 Rd o Sabe ite Ai Eis dte ad echo Pee a aaa 1 8 Backlight LED Driver jcc desert e otc dee e de e 1 8 LCD Trend Display E RT RENTES HE rented eos 1 8 Temperature Interface et eire RU RERO EURO ERE ENSE aUud 1 9 SpO5 Interface zer eR REED rp Pro np 1 9 SpO Processor Circuit BOards 5s NODUM O ROMA Ear aie antedios 1 11 SpO gt General Theory Of Operation nennen nenne entren retener enn innen nnn 1 11 Nellcor Nell 3 SpO Circuit Board Theory of Operation
34. 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 LED backlight connector advanced model Disconnect silicon hose from pump at the right angle elbow Remove the four hexagonal spacers and one Phillips head screw on the board No nO P o Lift board up gently and disconnect data ribbon cable from J 8 to the LCD display advanced model Accutorr Plus Service Manual 0070 10 0691 3 11 Disassembly Instructions Repair Information 3 6 6 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 4 connector cable Disconnect input cable at J 2 3 Remove screws as shown in Figure 3 1 FIGURE 3 1 Power Supply Assembly Diagram 825 pF WEE e Power Supply Cable 0012 00 1689 Power Supply 0014 00 0083 REMOVE THE 8 SCREWS IN THE CIRCLES 0070 10 0691 Accutorr Plus Service Manual Repair Information 3 6 7 3 6 8 3 6 9 3 6 10 3 6 11 Disassembly Instructions Removal of the LCD Display Advanced Model 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 d
35. 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 8 on page 5 11 describes the tests performed Press the DEFLATE key after each test to exit Table 5 8 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 5 5 12 Main Pressure Transducer Verification Test 11a 11b 11c NOTE 700 cc dummy cuff must be used 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 Mam Pressure Transducer Calibration on page 5 14 1 Select diagnostic test 11 Room a Bed Accutorr Plus Service Manual 0070 10 0691 5 11 Service Diagnostics 5 5 13 Calibration 2 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
36. al via the onboard Digital to Analog Converter DAC and drives advisory tones to the speaker by the onboard power amplifier 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 and 4 DAC drives view angle of trend display 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 DIG_ENABLE CONFIGURATO STAT LEDLEN ya ISP PORT x DIO ENABLE e Hi STAT LED2 EN VOCA PL z kB az VCCINT ET e hz Ee H S DATABUS DRIVER RECY CPU INTERFACE FIGURE 1 3 LED Tone Module Functional Block Diagram 1 16 0070 10 0691 Accutorr Plus Service Manual Theory of Operation LED and Tone Module 1 5 1 Keypad Control Circuitry for scanning the keypad for key presses The board scans a 3x8 matrix 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 0691 1 17 LED and Tone Module Theory of Operation This page intentionally left blank 1 18 0070 10 0691 Accutorr Plus Service Manual zo Specifications 2 1 Performance Specifications cccccccccessseeeeeceeeeeeeeeeeeeeeesenenee
37. ard Main Power Supply and Battery Charger Assembly LED Tone Module Assembly 1 2 0070 10 0691 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 temperature probes and SpO module transmits output data to the recorder and provides a serial I O port connection for PC communication The CPU NIBP module distributes power from the power supply which includes power and control signals to the LED Tone module to the remaining components of the system such as the recorder and SpO modules The CPU NIBP module also supplies separate power to the LED backlight and provides trend data to the display 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 may be changed at any time without notice 1 2 1 Software Overview The software performs the following functions 1 Initializes hardware and software modules e Microcontroller ports and communication serial interfaces e Software entry points and variables e Read configuration from NVRAM 2 Performs power up diagnostic Microcontroller FLASH and STATIC RAM test 3 Performs NIBP functions Accutorr Plus Service Manual Start m
38. asured with post average time at 8 seconds Low Perfusion Performance gt 0 02 Pulse Amplitude Transmission gt 5 Saturation Y SpO gt 2 digits Pulse 3 digits Wavelengths Emitted 660nm and 905nm Maximum Emitted Energy 30mW at 50mA pulsed Interfering Substances Carboxyhemoglobin may erroneously increase readings The level of increase is approximately equal to the amount of carboxyhemoglobin present Dyes or any substance containing dyes that change usual arterial pigmentation may cause erroneous readings Pulse Rate Performance Specifications Pulse Rate During No Motion Conditions Adult Pediatric Neonates 26 to 239 BPM 3 digits Pulse Rate During Motion Conditions Adult Pediatric Neonates 26 to 239 BPM 5 digits Update Rate Less than 4 seconds The Masimo MS 3 Pulse Oximetry module with LNOP Aadt sensors have been validated for no motion accuracy in human blood studies on healthy adult volunteers in induced hypoxia studies in the range of 7096 to 10096 SpO2 against a laboratory co Oximetry 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 Oximetry module with LNOP Aadt 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
39. automatically reduces the charging current during peak power demands on the 5V and 12 5V outputs Battery temperature monitored with NTC thermistor Semitec P N 103AT 2 Charge temperature 0 C to 50 C Discharge temperature 10 C to 60 C e Charger power requirements Nominal power during current limit mode decreases linearly from 28W to 0W maximum power during fast charge is 31 5 W max 1 14 0070 10 0691 Accutorr Plus Service Manual Theory of Operation Main Power Supply Low battery shutdown Automatic shutdown of all DC outputs when the battery voltage is 9 1V 4 4 Remaining load on the battery is less than 5 mA When the remote On Off switch is enabled and the AC input is not available power is delivered regardless of the charge on the battery as long as battery voltage is greater than the low battery shutdown voltage This insures that the system could be operated with a battery that is not fully charged Enable after shutdown If the AC input is not available after battery replacement power is delivered when the remote On Off switch is enabled as long as the battery voltage is 9 9V minimum Accutorr Plus Service Manual 0070 10 0691 1 15 LED and Tone Module Theory of Operation 1 5 LED and Tone Module The Accutorr Plus LED Tone module performs four main tasks 1 It drives all the 7 segments and discrete LED user displays on the keypad 2 it generates an IEC60601 1 8 compliant alarm sign
40. ccutorr Plus Service Manual 0070 10 0691 6 1 Preventive Maintenance Schedule Preventive Maintenance 6 3 6 3 1 6 3 2 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 Preventive Maintenance Schedule The following preventive maintenance steps are required for continued satisfactory performance and safety of the Accutorr 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 Mechanical and Physical Visual Inspection One Year Interval Check the following ite
41. cing a Keyboard you must replace the Graphic Panel Monitors with Nelicor and Masimo SpO do not report SpO2 Runtime and Boot Software Versions The Accutorr Plus always displays time in a 24 hour format 0070 10 0691 ix Introduction Precautions Precautions 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 properly Keep away from children Do not disassemble and do not dispose of in fire 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 CAUTION 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 This manual is correct to the best of our knowledge at the time of publication and reflects the product variations shown in this manual You may contact Technical Support to confirm that the manual is applicable for your unit Updated manuals are available for sale X 0070 10 0691 Accutorr Plus Service Manual 10 Theory of Operation 1 1 Major Functional Blocks of the Accutorr Plus
42. cturer SpO determination is based on the relative attenuation of a red and an infrared light source A sensor from the instrument contains two sets of LEDs to illuminate a portion of the body for example a fingertip and a single photo sensor detects the light returned The LEDs are alternately pulsed red and infrared Since hemoglobin is the carrier of oxygen in the blood and the relative attenuation of the light sources is proportional to the amount of oxygen carried by the hemoglobin a relative level of saturated hemoglobin can be determined Since we are measuring the ratio of red and infrared 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 SpO 2 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 SpO5 monitor accuracy is fixed and there are no possible adjustments NOTE The wavelengths of the light emitted are nominally 660nm and
43. d set the Diastolic Low Alarm to 95 mmHg 7 Press the Start NIBP key Verify the monitor takes a measurement and the Systolic and the Diastolic low alarms are violated The LEDs 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 8 After the fifth measurement is complete allow the cuff to pump up Press DEFLATE key Verify cuff deflates 9 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 LED display of the UUT and verify that the Systolic and Diastolic information is available in the LEDs for each stored settings 10 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 To clear the UUT Trend Memory for all patient settings press and hold the DELETE Accutorr Plus Service Manual INFO key while powering up the unit 0070 10 0691 SpO Normal Operation Accutorr Plus model with SpO Calibration 5 10 SpO Normal Operation Accutorr Plus model with SpO The purpose of this test is to verify that an SpO signal is recognized alarm limits are captured and the data 1s trended A full operational test may be conducted if so warranted within the limits of the pub
44. e 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_CONN 3 Input Output Damped Data Bus D 0 D DAMP CONN 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 CONN 1 8 Output Read Write R W CONN 9 Vcc return D digital ground 10 Output LDS LDS 11 Input Output Damped Data Bus D 2 D DAMP CONN 2 12 Output Chip Select UO CS IO 13 Vcc return D digital ground 14 Input Write Delay WR DLY 15 Input Output Damped Data Bus D 3 D DAMP CONN 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 CONN 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 CONN 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 D DAMP CONN 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 CONN 7 32 5V Supply VCC 33 Vcc return D digital ground 34 5V Supply VCC Accutorr Plus Service Manual 0070 10 0691 Interconnect Cables Run List Repair Information
45. e temperature probe first then the complete module 2 Recorder Module Test Obtain a print out of stored data or perform diagnostics test 4 to verify recorder integrity Substitute recorder with a known good device to confirm diagnosis 3 Infrared AccuTemp IR 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 IR all service requests should be directed to the factory 3 5 4 Clinical Issues with AccuTemp IR Ear Thermometer Applications 3 5 4 1 Multiple Temperature Measurements The AccuTemp IR 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 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 0691 3 7 Troubleshooting Problem Isolation Repair Information 3 5 4 2 How the AccuTemp IR Measures Art
46. e 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 SpOs 8850 No Sensor No sensor connected 8851 Sensor Off Sensor nat 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 pppblem Masimo SpO only 8857 PR 21 Pulse rate is less than 21 bpm Nellcor SpO only 8857 PR lt 26 Pulse ratgis 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 grgater than 239 bpm Masimo SpO only Accutorr Plus Service Manual 0070 10 0691 Troubleshooting Problem Isolation Repair Information TYPE CODE DESCRIPTION REASON SYSTEM 984 NIBP Hardware Failure NIBP A D failure det
47. ear to disengage the Interface connector 2 Remove the two screws retaining the circuit board and the anti static shield assembly Remove the shield 3 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 Accutorr Plus Service Manual 0070 10 0691 3 13 Disassembly Instructions Repair Information 2 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 3 Remove the three screws securing the circuit board and anti static shield Remove the assembly 3 6 12 AccuTemp IR Infrared Thermometer optional module The AccuTemp IR has no user accessible adjustments or replaceable parts except for the 9 Volt battery If problems arise contact Technical 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 3 14 0070 10 0691 Accutorr Plus Service Manual Repair Information Interconnect Cables Run List 3 7 Interconnect Cables Run List 3 7 1 Interfac
48. ease in temperature This can occur because the optical measurements in head of AccuTemp IR may slightly cool the area Wait a few the same location minutes for the temperature of the area to equilibrate Replace ear or axilla cover and 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 for example with a 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 IR ERROR REASON AccuTemp IR double beeps and Battery voltage lt 5 7 VDC Battery requires displays while holding the replacement Start button The AccuTemp IR then powers down AccuTemp IR double beeps while Low battery condi
49. easurement Repeat measurement e Over pressure limit Enter or exit test mode Abort measurement Enter or exit 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 Smooth pulsation data Determine systolic mean diastolic pressure and heart rate e Check alarm conditions 0070 10 0691 1 3 CPU NIBP Module Assembly with LCD Display Theory of Operation Se p ow 11 Transmits Receives data to from Infrared Predictive Temperature modules Manages Recorder functions Manages Keypad interface Provides RS232 communication to PC for software download Supports Service Diagnostics Supports Nurse Call feature Checks error conditions Maintain watchdog timer e Run time diagnostic Transmits Receives data to from SpO module if present 12 Controls LCD view angle 1 2 2 CPU Hardware Controls 1 c Ug aR Microcontroller executes the above software functions including e NIBP Recorder Temperature module PTM or IR e SpOs LCD Battery Back Up Circuitry for Power Savings Static memory Non volatile 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 seco
50. ected 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 overpressure 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 Isolating the Problem System Level Determine if the problem is in the main NIBP unit or in one of the add on accessories If the problem is in the accessory check the recorder unit for correct paper correct installation and paper jams If the 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 STANDBY keys should be illuminated If not connect the power cord to a live power outlet If the green LED fails to illuminate there is a probable power supply malfunction Check the battery operation LED Steady ON indicates battery operation A flashing LED indicates a near depleted battery If the green LED is NOT illuminated then the battery or power supply charger may be suspect Confirm correct operating parameters selecti
51. ed for the use and charge of a Lithium Ion battery P N 0146 00 0069 1 4 1 Description The power supply provides four regulated DC output voltages for the Accutorr Plus The power supply can operate from an AC line or a lithium ion battery and will automatically select the source of power available to the monitor with priority given to the AC line In addition the power supply can operate normally from the AC line without the battery or with a battery cell shorted The power supply consists of two basic blocks The first block is an AC to DC converter which consists of a universal AC input switching regulator and a battery charger for the lithium ion battery The second block consists of DC to DC converters that will supply 5V 12V 15V Power to the DC to DC converters is ORed from either the battery or the output of the AC to DC converter The power supply continuously monitors the battery voltage and temperature to charge the battery as required 1 4 2 Power Supply Output Voltages VOLTAGE TOLERANCE MAXIMUM CURRENT 5 volts 2 2 63 amps 12 5 volts 5 0 55 amps 15 volts 3 100mA Standby 7 7V to 13 6V 17mA 1 4 3 Lithium lon Battery and Charger Battery 11 1V Lithium Ion battery 3S2P 4 4 Ah min P N 0146 00 0069 Battery charger fully charges the Lithium Ion battery P N 0146 00 0069 within a max of 4 hours with the monitor in STANDBY mode and not overcharge if left on continuously The power supply
52. eees 2 1 2 2 Safety Characteristics eeseeeeeeeeneneneenn nn 2 6 2 3 Physical Characteristics eee enn 2 7 2 4 Environmental Characteristics eee 2 7 2 5 Electrical Ratings nene reb ener een 2 8 2 6 Agency Compliance eese enne nnne nnn 2 8 2 7 Electromagnetic Compatibility eere 2 9 2 1 Performance Specifications Systolic and Diastolic Pressure Readout Number of Digits 3 Accuracy Mean error lt 5 mmHg Standard deviation lt 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 Service Manual 0070 10 0691 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 3 whichever is greater Maximum Cuff Pressure Two means of limiting cuff pressure are provided 1 a hardware over pressure monitor that limits the pressure to 330 mmHg for Adults 220 mmHg for Pediatrics and 165mmHg for Neonates 2 a
53. eeneeereneeenes 5 15 Predictive Thermometer Verification And Calibration eese eene 5 16 Water Bath Method 3i tote e d eh Re e dee 5 16 Temperature Verification Test Infrared Thermometer Applicable Only To Units Equipped With A Temperature Option ese NR ete te eter 5 16 Low Battery Sensing eee een repe HH I RH ie eed 5 17 Setting the Current TINE Seege eege ee Nd Vett Ma ain et 5 18 NIBP Normal Operation eee eee Re e e ert e Ed ded rie ences de ect 5 19 Trend Memory Initialization eeesseesssseseeeeee enne en rennen enne nennen nennen 5 19 SpO Normal Operation Accutorr Plus model with Spa 5 20 Javavsisauibiriil e 6 1 ere te e 6 1 Limitations Of Physiological Simulators essere ener nnn 6 1 Preventive Maintenance EE 6 2 Mechanical and Physical Visual Inspection One Year Interval 0 0 eeeeceseeecneceeeeeeeeeseeeeeeeeaeees 6 2 Electrical Safety and Performance Checks One Year Interval sse 6 2 vi 0070 10 0691 Accutorr Plus Service Manual Contents Introduction Contents 1 0 Theory of Operation 20 cccceeseeeeeseeeeeeeeeseeeeeeeeseseeeeeeeeeseeneeeeseseeeees 1 1 2 0 Specifications eoe eene ENEE EES 2 1 3 0 Repair Information seesesesseeeeeseeseeee eren 3 1 4 0 Replacement Parts and Isometric Drawings 4 1 5 0 Calibration iren EENEG 5 1 6 0 Pre
54. erial Temperature Adults Pediatrics The AccuTemp IR is a self calibrating infrared ear thermometer that accurately measures the infrared heat energy radiating from the ear canal opening The AccuTemp IR 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 IR 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 calculation 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 IR with and Accu
55. ervice Diagnostics The Service Diagnostics tests must be run in the sequence indicated The numbers and letters in parentheses after the title of each test represent the room number and bed letter used to access the test 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 6699 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 LEDs Accutorr Plus Service Manual 0070 10 0691 5 5 Service Diagnostics Calibration 5 5 2 Software Version Test 0a 0b 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 6 Installed Software Example AO1 02 PATIENT INFO Software Module y Selection Example ACM Runtime software identifier HOLDTOCLEAR v E emm MENU SELEC print ks 9 9 OE GY ED TED FIGURE 5 1 Software Version Test Confirm that the ROOM number is at 0 otherwise use the ROOM BED key to select 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 a or b Monitors without SpO option may not display resul
56. ic low 0 8V max SpO2 OPT2 SpO option 2 installed 19 Input logic low 0 8V max IR TYMP Temp module attached 20 Input logic low 0 8V max SpO2 OPT1 SpO option installed SpO Connector J 7 PIN INPUT OUTPUT DESCRIPTION NAME 1 Output ground DGND 2 Output TTL module reset SpO2RST 3 Output ground DGND 4 Output TTL serial out SpO2 RX 5 Input SpO module installed SpO2 logic low 0 8V max 6 Input TTL serial in SpO2 TX 7 Output 5V supply 5 5V 8 Output 15V supply 5 15V 9 Output Analog ground AGND 10 Output 15V supply 5 15V Accutorr Plus Service Manual 0070 10 0691 Interconnect Cables Run List Repair Information 3 7 1 8 NIBP Pump Connector J 505 PIN INPUT OUTPUT DESCRIPTION NAME 1 Output pump supply 12VF 2 Input pump return PUMP 3 Input power ground P power ground 3 7 1 9 LED Backlight Connector J 651 PIN INPUT OUTPUT DESCRIPTION NAME 1 Output Min 3 4V Max 3 6V BL 2 Input Return BL 3 7 1 10 Communication Connector J 603 PIN 8 INPUT OUTPUT DESCRIPTION NAME 1 N C N C N C 2 Input RS 232 RTS 3 Output RS 232 CTS 4 Output Ground DGND 5 N C N C N C 6 Output Ground DGND 7 Output RS 232 Transmit EXT TXD 8 Input RS 232 Receive EXT TXD 9 Output Ground DGND 10 Output Ground DGND 11 Output 7Vdc min NCall 12 Output RS 232 or RS 485 TXD 13 Input RS 232 or RS 485 RXD 14 Output 12VDC
57. isconnect backlight cable from the CPU NIBP board Removal and replacement of the Internal 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 NOTE New batteries are shipped in a discharged state for safety reasons A new battery must be charged for 4 hours for Li lon 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 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 2 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 4 Remove the locking nuts from the safety ground terminal stud remove ground conductor 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 r
58. le 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 eplace Probe efective probe or connection PTM 8831 Replace Prob Defective prob i 5 2 0070 10 0691 Accutorr Plus Service Manual Calibration Introduction Table 5 1 TYPE CODE DESCRIPTION REASON SpOs 8850 No Sensor No sensor connected 8851 Sensor Off Sensor not on patient Masimo SpO only 8852 Interference Interference on signal Masimo amp SpO only 8853 Pulse Search Unit cannot find signal Nellcor SpO module will report Pulse Search 8853 when the
59. li 3 9 Disassembly Instruction ss et Re Rer ttu st Ee 3 10 Removal of the Rear Hossegaass RU SDN ENERGIE ee 3 10 RemoyvaLofthe Fret Bezel 2 eee ett eee e rre e reete 3 10 Removal of the Keyboard Assembly sess 3 10 Removal of the LED Tone board entente a a E nnne nens 3 10 iv 0070 10 0691 Accutorr Plus Service Manual Table of Contents Removal ofthe PU P NIBP board itm RU pe iia nd eens 3 11 Removal of the Power Supply Assembly sese eere enne 3 12 Removal of the LCD Display Advanced Model 3 13 Removal and replacement of the Internal Li Ion Battery sese 3 13 Removal of the AC Input Receptacle Assembly sessssssssssssseeeeneeneneenenee nennen 3 13 Thermal Printer optional module ssssssesesssseeeseeeeeen ener 3 13 Thermometer Predictive optional module sess 3 13 AccuTemp IR Infrared Thermometer optional module sse 3 14 AccuTemp IR Mounting Cradle sess nnne nens 3 14 Interconnect Cables Run Eit E 3 15 Interface Specifications Connectors and Functions 0 ccccesseescesseeseceeecsecseeeecseeeeceseseeeeeeeeeneeenes 3 15 Connector to LED Tone PCB L 3 15 Power Supply Header LEE 3 17 J 2 Keypad Connector etie ote ies ttti tet v ttes tad Need gen 3 17 J 4 Speaker Connector stoerre renn EENEG 3 18 R corder Connector Teenager 3 18 Thermometer Connector
60. lished 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 100 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 Set the SpO HI alarm to OFF and SpO LOW alarm to 86 T 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 Sp values or indicate a status code of 8853 Pulse Search or 8854 Weak Pulse Low Perfusion 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 Sensor 0070 10 0691 Accutorr Plus Service Manual eo
61. ll cable is supplied from the onboard DC DC converter The MAX236 receivers are controlled by logic signal CSTAT Logic 0 enables the receivers otherwise they are tri stated 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 a9 pin panel mount D connector Backlight LED Driver The LED driver module is implemented with Linear LT3474 step down 1A LED driver It can source constant current maximum up to 1A The current can be programmed by setting the voltage at Vadj pin pin 13 through resistors R42 and R14 The switching frequency is programmed to 300KHz for best duty cycle i e 96 for higher efficiency The typical LED drop voltage of 3 5V is achieved by programming the constant output LED current of 71mA The Vadj is sourced from external voltage source 1 e 5V VCC by external resistor divider LCD Trend Display DAC control provided from the LED Tone Board controls the LCD View Angle 0070 10 0691 Accutorr Plus Service Manual Theory of Operation CPU NIBP Module Assembly with LCD Display 1 2 4 12 Temperature Interface The board provides a Serial Interface to either Temperature module 1 2 4 13 SpO Interface The board provides a Serial Interface to SPO and reset control of the module Glue Logic RESET NIBP amp Buffer control RTC With SST298F040 55 HM62165
62. lude the Model and Serial Number of the instrument The model number of the Accutorr Plus starts with the numbers 0998 and consists of 13 or 14 digits All digits must be supplied 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 0083 02 Main Power 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 4 2 0070 10 0691 Accutorr Plus Service Manual Replacement Parts and Isometric Drawings Isometric Drawings and Parts Lists 4 7 Isometric Drawings and Parts Lists The following figures show exploded views of the Accutorr Plus components part numbers and descriptions Accutorr Plus Service Manual 0070 10 0691 4 3 1690 01 0200 jenueyy eoes snjg Ui m A Sir Sueg pue s6uimelg 2ujeuios ITEM PART NUMBER DESCRIPTION 1 0103 00 0411 NIBP Connector 2 0380 00 0359 06 Bezel w Masimo SpO2 or w o SpO2 2A 0380 00 0359 08 Bezel w Nellcor SpO2 3 0012 00 1463 SpO2 Connector Assembly Nellcor 3A 0012 00 1344 SpO2 Connector Assembly Masimo 14 0334 00 1509 01 Label Bezel without SpO2 14A 0334 00 1509 05 Label Bezel with Nellcor SpO2 14B 0334 00 1509
63. ly 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 Overpressure Transducer Calibration on page 5 15 The overpressure transducer should also be verified in the High and Mid level pressure modes Select diagnostic test 12 Room a Bed Low Limit Press the START NIBP key to start the test 1 2 3 Verify that the overpressure value displayed in the MAP LEDs is 158 mmHg 1 4 Repeat steps 1 through 3 but select test 12 c to check overpressure limit 315 mmHg 15 and test 12 b for Mid level overpressure limit 210 mmHg 10 5 Press the DEFLATE key to exit this test Accutorr Plus Service Manual 0070 10 0691 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 11 NOTE 700 cc dummy cuff must be used 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 NIBP simulator at 158 mmHg 1 and then by adjusting R540 on the 0670 00 0814 PCB see Figure 5
64. m 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 to release the pressure and end the test Following each overpressure hardware test the UUT must be turned off and rebooted in the diagnostic mode in order to re enable the pump Table 5 6 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 0070 10 0691 Accutorr Plus Service Manual Calibration Service Diagnostics 5 5 10 Pulse Channel DC Offset Test 9a 9b 9c Select Room Number and Bed Letter per Table 5 7 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 7 on page 5 11 describes the tests performed Press the DEFLATE key after each test to exit Table 5 7 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 5 5 11 Pulse Channel Average Noise Test 10a 10b 10c Select Room Number and Bed Letter per Table 5 8 on page 5 11 and press the NIBP START key to
65. 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 5 15 Main Pressure Transducer Calibration on page 5 14 Press the DEFLATE key to release the pressure and exit the test 4 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 Mam Pressure Transducer Calibration on page 5 14 6 Press the DEFLATE key to release the pressure and exit the test Select diagnostic test 11 Room c Bed 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 occu
66. ms 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 1 e probe covers recorder chart supply Power cords external safety ground connections and communication cables 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 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 Recorder is functional and documents available stored data 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 0070 10 0691 Accutorr Plus Service Manual Preventive Maintenance Preventive Maintenance Schedule This page intentionally left blank Accutorr Plus Service Manual 0070 10 0691 6 3 Printed in U S A 0070 10 069 1 REV B December 9
67. nd interface for CIS HIS Real time clock with 16K of Lithium backed up NV RAM 1 2 3 NIBP Hardware functions 1 2 3 1 Main pressure transducer circuitry A pressure transducer and amplifier combination is provided to acquire the cuff pressure signal 1 2 3 2 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 0691 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 LCD 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 o PY nN gt 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
68. new line to be printed request for next byte of data Accutorr Plus Service Manual 0070 10 0691 1 7 CPU NIBP Module Assembly with LCD Display 1 2 4 9 1 2 4 10 1 2 4 11 Communication Block The module provides the following interfaces and functions e RS 232E drive from TTL levels RS 232E driver for CIS HIS that will provide minimum of 9V signal level C based DC DC converter capable of converting VCC to 12VDC with leakage current when off lt 100uA High frequency operation to limit emitted fields Capable of providing an output current of 125 mA a 12Vdc with an efficiency of 80 or higher Signal driver for an external isolated relay that will be used for Nurse Call provided on pins of the 9 pin RS 232 connector The RS 232E interface required is implemented using a Maxim MAX236 Multi Channel Transceiver U602 This chip was chosen because it has a minimum 9 volt output signal level Communication is to support a 5 wire interface 4 signals and a ground The signals are described below Theory of Operation 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 de power required by the Nurse Ca
69. nual Introduction 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 IR 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 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 4 hours for Li lon 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 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 repla
70. ological parameters Masimo SET Technology is composed of three components 1 new signal processing apparatus 2 anew method for in vivo measurement and 3 new sensor technologies The main benefit of Masimo technology is the effective cancellation of unpredictable in band noise noise that 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 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 ar
71. on 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 0070 10 0691 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 Trend circuits 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 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 th
72. order given 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 1f they equal or exceed the listed equipment performance e Non Invasive Blood Pressure Simulator e Stopwatch e SpO Simulator e RS232 Test Connector pins 2 and 3 shorted 9 pin male D and software download port tester e Phono plug tip and ring shorted 700 cc Dummy Cuff P N 0138 00 0001 01 e Chart Paper P N 0683 00 0447 01 e Water Bath stirred heated 80 to 120 F Reference Thermometer 0 196 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 The Timer Temp display starts a count down from 20 This Is the initial software verification Allow the unit to complete the start up sequence until there is a single LED light steadily illuminated above the Patient Setup key After the initial power up sequence a is displayed in the bed LED and 0 is displayed in the Room LEDs 3 Press the ON STANDBY key to turn the UUT off 0070 10 0691 Accutorr Plus Service Manual Calibration 5 5 5 5 1 Service Diagnostics S
73. owing formula K TT TA TA Tqcajc where Tacaic 18 Calculated Display Temperature Kcore 1 087 Correction Factor for Core Temperature Ty is Target Temperature TA is Ambient Temperature Sample Calculation Ambient temperature TA measured 72 F Water Bath temperature Tr measured 98 6 F Correction Factor K gor 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 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 5 6 3 Low Battery Sensing The low battery threshold is not adjustable When the battery has reached the low battery threshold the power supply will report this condition to the CPU on the Accutorr Plus Accutorr Plus Service Manual 0070 10 0691 5 17 Setting the Current Time Setting the Current Time Calibration Press and hold the TIMER TEMP key for 6 seconds The hour digit only displays Press the UP or DOWN ARROW key to change the number Press the TIMER TEMP key to activate the minute display
74. patient leads to the chassis 1500V RMS at 50 or 60 Hz for 1 minute AC mains hot or neutral to the chassis 2 2 3 Ground Resistance Ground resistance lt 0 1 ohm from the AC mains power inlet modules ground contact pin to any exposed metal part which may become energized when measured per UL 60601 and IEC 60601 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 2 2 4 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 of its conductors is in doubt the equipment is operated from its internal electric power source 2 2 5 Degree of Protection Against Electric Shock Monitor Type B applied part 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 Meets the requirements specified by IEC 60601 1 clause 44 3 and IEC 60601 2 30 Non Protected Equipment IPX1 as specified in EN 60529 2 6 0070 10 0691 Accutorr Plus Service Manual Specifications Physical Characteristics 2 3 Physical Characteristics Size maximum Main Unit 19 cm W x 26 93 cm H x 20 83 cm D 7 5 W x 10 6 H x 8 2 D Recorder Module 5 33 cm W x 23 cm H x 11 em D 2 1
75. rmation etc This memory is used for data storage Therefore a battery back up is provided Nonvolatile RAM Nonvolatile ram is used for configuration and serial number information This memory requires a battery back up 0070 10 0691 Accutorr Plus Service Manual Theory of Operation CPU NIBP Module Assembly with LCD Display 1 2 4 5 Micromanager This device provides a number of features that are useful for management of this board They are listed as follows A ON STANDBY capability through keyboard control B Watchdog timer C Conversion of CMOS SRAM to pseudo nonvolatile 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 the system is not powered A lithium battery is included having a minimum of 10 years of operation for configuration and clock data retention during battery changes and main battery failure Accuracy is 1 minute week 1 2 4 8 Recorder Interface IDMA capability for writing 8 bit buffered parallel data to the recorder Handshaking signals to specify
76. rogrammable Temperature Biological Risk Acoustics Random Vibe Shock Ingress Shipping 0070 10 0691 EN 60601 1 1990 A1 1993 A2 1995 A13 1996 IEC 60601 1 1988 A1 1991 A2 1995 UL 60601 1 2003 CAN CSA C22 2 No 601 1 M90 R2005 EN 60601 1 1 2001 IEC 60601 1 1 2000 EN 60601 2 49 2001 IEC 6060 1 2 49 2001 ISO 9919 2005 EN 60601 2 30 2000 IEC 60601 2 30 1999 EN 1060 1 1995 A1 2002 EN 1060 3 1997 A1 2005 ANSI AAMI SP10 2002 A1 2003 A2 2006 EN 60601 1 4 1996 A1 1999 IEC 60601 1 4 1996 A1 1999 ASTM E1112 00 2006 ISO 10993 1 2003 EN 14971 2000 A3 2003 EN 60601 1 8 2004 A1 2006 EN 60068 2 64 1994 IEC 60068 2 64 corrig 1993 IEC 60068 2 27 1987 EN 60529 1991 A1 2001 Corr 1 2003 ISTA Procedure 1A 2001 Accutorr Plus Service Manual Specifications Electromagnetic Compatibility Drop and Impact ECRI PB 29689 1979 EMC IEC 60601 1 2 2001 Magnetic Fields EN 61000 4 8 1993 A1 2001 Voltage Dips EN 61000 4 11 2004 Volt Change Fluctuations Flicker EN 61000 3 3 1995 A1 2001 A2 2005 1S1 2005 Conducted Immunity EN 61000 4 6 1996 A1 2001 A2 2006 Radiated Immunity EN 61000 4 3 2006 ESD EN 61000 4 2 1995 A1 1998 A2 2001 EFT EN 61000 4 4 2004 Surge EN 61000 4 5 2006 Radiated and Conducted Emissions EN 55011 1998 A1 1999 A2 2002 Harmonic Emissions EN 61000 3 2 2000 A1 2001 A2 2005 2 7 Electromagnetic Compatibility The Accutorr Plus has been tested and found to comply with the req
77. rred and proceed to section 5 5 15 Mam Pressure Transducer Calibration on page 5 14 9 Press the DEFLATE key to release the pressure and exit the test Verification of Accutorr Plus Pneumatic Performance using an 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 NIBP simulator to perform the desired test Instead of pumping up the cuff this test uses the NIBP simulator to verify the Accutorr Plus 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 clear the MAP display and exit the test The NIBP simulator must be exited separately NOTE The reading and setting accuracy will be dependent on the accuracy of the NIBP simulator and the condition of the Accutorr Plus The NIBP 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 0070 10 0691 Accutorr Plus Service Manual Calibration Service Diagnostics 5 5 14 Overpressure Transducer Verification lt 12c 12a 12b gt This test verifies that the overpressure transducer is calibrated correct
78. s 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 1 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 Communication Test 3a 3b This test checks the integrity of the external communication 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 TEST 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 EK E EE Aw ZAX Man 39454 OUWT EU err EOI HEI 1 D i4 Bjepoqe TS DS12A58 Mh sad HNHTAP IH 843503908 Gert E Baute REN Do vi FIGURE
79. s 158 mmHg 2 Repeat 5 5 14 Overpressure Transducer Verification 12c 12a 12b gt on page 5 13 Over Pressure Adjust R504 FIGURE 5 5 Accutorr Plus Service Manual Overpressure Adjust R504 0070 10 0691 5 15 Predictive Thermometer Verification And Calibration Calibration 5 6 5 6 1 5 6 2 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 A comprehensive factory service program to support this product is available Water Bath Method 1 Prepare a water bath set to 89 6 to 110 0 F as a temperature reference Confirm temperature 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 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
80. s 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 1s 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 are for use by qualified technical personnel only Mindray DS USA Inc offers a comprehensive selection of Technical Training Seminars for this and other products Contact the Registrar Technical Support Department or your regional sales or service representative for course offerings and dates Accutorr Plus Service Manual 0070 10 0691 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
81. screws from the corners of the back housing recess and the two screws in the center channel of the rear case 3 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 2 Remove the Front Bezel as described above 3 Remove the screws 6 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 2 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 0691 Accutorr Plus Service Manual Repair Information Disassembly Instructions 3 6 5 Removal of the CPU NIBP board 1 Disconnect J 505 NIBP pump connector J 7 SpO interface connector advanced model and J 502 Power supply connector all on the top edge of the board 2 Disengage the captive cable connectors for the Recorder and
82. sseseeeeeeeneneee eene 2 6 Physical Characteristics eet Aeren 2 7 Environmental Characteristics cccsccssssscceccesecesceeeesceneeeeceseeeecseesaecaaesaecaeceaesaeseseeseseseseeeneeaeeaeeseaees 2 7 Electrical Ratings 5i eee iain qu Rite eiie Tp trei e rA SN 2 8 Agency Compliance eee ERR Rises ROUES RM UB RIO GIU OU e eiit 2 8 Electromagnetic Compatibility 2 scene tee tege dietis ene eed ELE dEH 2 9 Repair Information seer 3 1 Tinto te Ve EE nm eletto ues 3 1 Safety Precautions ege ne n e re a Een RE ERR 3 2 General Troubleshooting Guidelines ener ener enne nnne 3 3 Troubleshooting Tips idee nee eere d e e a er 3 3 Exchange Program RR RT E RR TU S RR SUC RIO E E 3 3 Test Equipment E EEN 3 4 Troubleshooting Problem Isolation cccccesceseeseesseeeceseeesecscecsecsaesaecnsceeceenseseeceaeseaeeaeeeeeeaeeaeeaeaees 3 5 Erroi Codes o e das etm eee ea ae han ae teret E 3 5 Isolating the Problem System Level eee ee RETE EET ee 3 6 Isolating the Problem within the Main Un 3 7 Isolating the Problems with Optional Accessory Modules seen 3 7 Clinical Issues with AccuTemp IR Ear Thermometer Anpleatons esee 3 7 Multiple Temperature Measurements ccccescessessceseeeecesceseeeseeeeecaeesaecaecsaecaecaeeseeessetenseeas 3 7 How the AccuTemp IR Measures Arterial Temperature Adults Pediatrics 3 8 Troubleshooting eege EERSTEN 3 9 N ge
83. tal 0206 00 0725 02 Temperature probe covers box of 500 0198 00 0012 03 Complete replacement Predictive 0998 00 0129 Temperature module with 2 probes and 1 box of probe covers 4 10 0070 10 0691 Accutorr Plus Service Manual Replacement Parts and Isometric Drawings Accessory Modules and Mounting Parts Lists 4 8 3 Universal Rolling Stand P N ACCTROLLSTD Assembly Parts List CALLOUT NUMBER DESCRIPTION PART NUMBER 1 Basket 0202 00 0166 2 Casters Non Locking 0401 00 0045 Casters Locking 0401 00 0046 3 Mounting Bracket for Accutorr 0406 00 0855 01 Plus includes mounting screws Complete Rolling Stand and ACCTROLLSTD Mounting Bracket Assembly FIGURE 4 7 Accutorr Plus Rolling Stand P N ACCTROLLSTD Accutorr Plus Service Manual 0070 10 0691 4 11 Accessory Modules and Mounting Parts Lists Replacement Parts and Isometric Drawings 4 8 4 Mounting Options Accutorr Plus Wall Mount Bracket 0436 00 0247 Accutorr Plus Basic Advanced Sample Wall Mount FIGURE 4 8 Accutorr Plus Mounting Options 4 12 0070 10 0691 Accutorr Plus Service Manual sn 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 Introduction cerent rre tet R Hebr eroe RR Ra SERPENS 5 2 Precautions And Guidelines ecseeessuus 5 4 Test Equipment And Special Tools Required 5 4 Power up Sequence Internal Testing
84. tet DER EE e Re Ue Dee eA Meet E e eee teat 5 2 Precautions And Guidelines eere tete pe e EN Tre eee be ted ese ta eger 5 4 Test Equipment And Special Tools Required ssssssssseseeee eene 5 4 Power up Sequence Internal Testing Rie EU Ant SAW E Eeer 5 4 Service Dia snostics o oed ote dau tug diet tete aeneis 5 5 Accutorr Plus Service Manual 0070 10 0691 v Table of Contents Introduction Hidden Key 3 Bite de RR A Ee Nette 5 5 Software Version Test 0a DI eeh eet etri I ee uie HERR uei 5 6 Keypad Testi egen tied nte n p PEE nib E UR PAD A gi en 5 7 LED Te t 2a52D 5 ea ede E ERSTER AE e ERES RE e ee de HER MESS 5 8 Communication Test ET 3b talo RAN Itt ete Re s 5 8 Recorder Test 4 s e teo ode eie mue amit dau 5 8 Pump Test 3 eget EE AE Are SR REIR EE E ANE 5 9 Bleed Rate Test 62 6D enee ERN ERN RUN UN EON NN OE 5 9 EK EE 5 10 Over Pressure Test 848b 86 nd iss tees So dto etae aed eee hoi a mee ie 5 10 Pulse Channel DC Offset Test 9a 9b Oe 5 11 Pulse Channel Average Noise Test 10a 10b I e nennen 5 11 Main Pressure Transducer Verification Test OlaIIbileh 5 11 Verification of Accutorr Plus Pneumatic Performance using an NIBP Simulator 114d 5 12 Overpressure Transducer Verification lt 12c 12a bs 5 13 Main Pressure Transducer Calbratton eene enne enr 5 14 Overpressure Transducer Calibration cccccccessessecseceseeeceseesecescesceseeeneeeecaeeseecaecsaeaec
85. tifact in pulse oximetry Further technical information is available from Masimo on the Internet at WWw masimo com 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_ MS 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 0070 10 0691 Accutorr Plus Service Manual Theory of Operation SpO Processor Circuit Boards The isolated DC DC converter 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 0691 1 13 Main Power Supply Theory of Operation 1 4 Main Power Supply There is one power supply used in the Accutorr Plus P N 0014 00 0083 02 is configur
86. tion Battery voltage is between holding the Start button 6 2 and 5 7 VDC AccuTemp IR displays E OO or Return AccuTemp IR for service E 01 while holding the Start button 3 5 4 4 Maintenance The AccuTemp IR 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 IR with an optical film cover in place Accutorr Plus Service Manual 0070 10 0691 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 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
87. torr Plus the temperature measurement can be transferred from the AccuTemp IR to the Accutorr Plus for display and entry in to the trend database by placing the AccuTemp IR 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 IR 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 IR 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 IR is locked and must be returned to its holder NOTE The AccuTemp IR 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 0070 10 0691 Accutorr Plus Service Manual Repair Information Troubleshooting Problem Isolation 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 decr
88. ts for tests Oc and 0d 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 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 0070 10 0691 Accutorr Plus Service Manual Calibration Service Diagnostics 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 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 6 Verify that the correct number appears in the Patient Bed Letter Display when each key is pressed Hidden Key Start Test Key 0 Key 8 Datascope Accutorr Plus 9 9 17 tem e n TIMER TEMP E ES s 4 19 16 13 Gar k est Display Nc S D M e 10 20 05 03 00 114 64 83 20 05 02 58 123 61 84 60 20 05 02 35 127 62 83 58 97 18 20 05 02 33 MENIKIUSKERI 56 20 05 02 30 129 62 84 59 n e m TT L SZ ON Off 22 12 20 14 2 T Keyboard Test Accutorr Plus Advanced Model FIGURE 5 2 4 Press the DEFLATE key for 3 seconds to exit keypad test Accutorr Plus Service Manual 0070 10 0691 Service Diagnostic
89. uct 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 0691 4 1 Exchange Program Replacement Parts and Isometric Drawings 4 4 Exchange Program An 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 4 5 Replacement Parts Pricing Information Current parts prices and exchange charges can be determined by contacting the Order Entry Department 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 Inc
90. uirements 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 Accutorr Plus Service Manual 0070 10 0691 2 9 Electromagnetic Compatibility Specifications This page intentionally left blank 2 10 0070 10 0691 Accutorr Plus Service Manual 30 Repair Information 3 1 Introductloh deeg terrre roce cs cr ere ro eene He exer ekle Ern Rote 3 1 3 2 Safety Precautions eese nnns 3 2 3 3 General Troubleshooting Guidelines ees 3 3 3 4 Test Equipment Required uk EEN EEN EE EEN 3 4 3 5 Troubleshooting Problem Isolation 3 5 3 6 Disassembly Instructions RSR ENEE EEN 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 thi
91. ulse 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 that 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 that do not appear to fit the amplitude envelope are removed The systolic diastolic and mean pressures are then calculated in accordance with 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 communication 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 info
92. use proper static safeguard techniques 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 properly Keep away from children Do not disassemble and do not dispose of in fire 3 2 0070 10 0691 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 it 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 If all set ups are OK replace instrument with similar de
93. utput TTL recorder data Buffered Data Bus DX lt 4 gt 5 Output TTL recorder data Buffered Data Bus DX lt 3 gt 6 Output TTL recorder data Buffered Data Bus DX lt 2 gt 7 Output TTL recorder data Buffered Data Bus DX lt 1 gt 8 Output TTL recorder data Buffered Data Bus DX lt 0 gt 9 Output ground DGND 10 Output TTL recorder write WR_RECD 11 Input logic low Recorder RECD module attached 12 Output TTL Reset recorder RESETSRV 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 5V 18 Output 5V return PGND 19 Output 5V printer supply 1V 5V 20 Output 5V return PGND 3 18 0070 10 0691 Accutorr Plus Service Manual Repair Information 3 7 1 6 3 7 1 7 Thermometer Connector J 4 Interconnect Cables Run List 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 out TEMP_RXD 7 N C N C N C 8 N C N C N C 9 N C N C N C 10 N C N C N C 11 Output 9 17 3 VDC STDBY 12 Output ground aground 13 Output VCC 5VDC 2 supply 14 Output VCC 15 Input logic low 0 8V max PRED 16 Input Predictive Temp module PRED attached 17 Output ground DGND 18 Input log
94. ventive Maintenance ceccesceesseeeeeeeeeeeee eee seneeesseeeneeeeeeeenees 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 0692 02 English and P N 0070 00 0695 international languages Foreword This Service Manual P N 0070 00 0691 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 9XX Use this Accutorr Plus Service Manual ONLY for the monitor part numbers listed below This manual provides specific information that may not be applicable to other part numbers The part number P N and serial number are necessary for positive identification of the correct parts They are located on the rear panel label of the Accutorr Plus unit MONITOR PART NUMBER P N MONITOR CONFIGURATION 0998 00 0444 91A Basic NIBP only IEC English 0998 00 0444 91G Basic NIBP only IEC German 0998 00 0444 91P Basic NIBP only IEC Spanish 0998 00 0444 91F Basic NIBP only IEC French 0998 00 0444 91T Basic NIBP only IEC Italian 0998 00 0444 93A IEC English S Advanced Nellcor IEC German Advanced Nellcor9 IEC Spanish el
95. vice 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 persists 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 Use the 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 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 Clean the 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

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