Covidien Nellcor OxiMax N-560 Service Manual Download Page 153

Page: 153 / 158

N-

560

Service Manual

143

I n d e x

Symbols

---

103

AC input theory

112

accessing menu items

accessories

alarm limit ranges

alarm off

103

alarm parameter being violated

103

alarm silence

103

alarm silence duration

alarm silence state

alarm volume

alarm volume control

103

audible alarm settings

automatic calibration

106

battery

battery charge

battery in use

103

battery removal

battery theory

113

baud rate

block diagram

112

block diagram theory

112

103

button interface theory

116

button problems

cautions

charging circuits theory

115

circuit analysis

111

cleaning

connecting to the data port

controlling hardware theory

114

CPU theory

114

data port interface protocol

data port problems

description of N-560 pulse oximeter

disassembly guide

display/alarms problems

earth leakage current

enabling the data port

enclosure leakage current

equipment needed

equipotential terminal removal

error codes

exploded view

fan removal

front panel

front panel display theory

116

front panel PCB and controls theory

116

functional checks

functional versus fractional saturation

106

ground integrity

hospital type environments

interference, terminology

LED excitation test

loss of pulse

loss of pulse with interference

103

low battery

103

Summary of Contents for Nellcor OxiMax N-560

Page 1: ...Service Manual OxiMaxTM Technology Nellcor OxiMax N 560 Pulse Oximeter TM...

Page 2: ...6 411 833 6 463 310 6 591 123 6 708 049 7 016 715 7 039 538 7 120 479 7 120 480 7 142 142 7 162 288 7 190 985 7 194 293 7 209 774 7 212 847 7 400 919 To obtain information about a warranty if any con...

Page 3: ...8 Battery Charge 8 Power Up Performance 8 Power On Self Test POST 9 Power On Defaults and Alarm Limit Ranges 11 General Operation 16 LED Excitation Test 16 Operation with a Live Subject 17 Alarm Volum...

Page 4: ...Item 14 Alarm Sound Style Select 41 Setting Institutional Defaults Sample 41 Troubleshooting 43 Introduction 43 How To Use This Section 43 Who Should Perform Repairs 43 Troubleshooting Guide 43 Power...

Page 5: ...all Polarity Settings 99 Nurse Call Relay Pin States 99 Nurse Call Relay Rating 99 Real Time Printout 100 Column Heading 100 Printout Source 101 Software Revision Level 101 Alarm Limits 101 Column Hea...

Page 6: ...Contents N 560 Service Manual iv Storage of Patient Data 115 Front Panel PCB and Controls 116 Front Panel Display 116 Button Interface 116 Index 143...

Page 7: ...nting Screws 58 Figure 19 Front Case Bracket 58 Figure 20 Speaker Removal 59 Figure 21 Front PCB Removed 59 Figure 22 NELL 3 Cable Connections 60 Figure 23 NELL 3 Removal 60 Figure 24 Front case Wirin...

Page 8: ...nd DC DC Converter Schematic Diagram 123 Figure 53 Main PCB Interface and Speaker Control Schematic Diagram 125 Figure 54 Main PCB MCU and Storage Control Schematic Diagram 127 Figure 55 Main PCB Part...

Page 9: ...l Performance Problems 48 Table 10 Data Port Problems 49 Table 11 Error Codes 50 Table 12 Spare Parts and Accessories 71 Table 13 Tone Definition 80 Table 14 Cable Compliance 87 Table 15 Electromagnet...

Page 10: ...List of Tables N 560 Service Manual viii...

Page 11: ...verse events to the patient or user Cautions Cautions are identified by the CAUTION symbol shown above The word CAUTION and the caution text are boldfaced Cautions alert the user to exercise care nece...

Page 12: ...type facilities intra hospital transport and home environments For prescription use only Note Hospital use typically covers such areas as general care floors operating rooms special procedure areas i...

Page 13: ...mplitude Indicator 15 Sensor Off Indicator 5 Pulse Rate Display 16 Sensor Message Indicator 6 Alarm Silence Button 17 Pulse Search Indicator 7 Alarm Silence Indicator 18 Data In Sensor Indicator 8 Adj...

Page 14: ...manual To understand the various Nellcor sensors that work with the N 560 refer to the individual sensor s directions for use The latest versions of the operator s manual and the service manual are po...

Page 15: ...SpO2 sensor read the directions for use enclosed with the sensor Each sensor model has cleaning instructions specific to that sensor Periodic Safety Checks The N 560 requires no routine service or cal...

Page 16: ...ds replacing the N 560 s battery every two years When the N 560 is going to be stored for two months or more remove the battery prior to storage To replace or remove the battery refer to Disassembly G...

Page 17: ...ified in any test repairs must be made to correct the problem before the N 560 is returned to the user Equipment Needed Table 1 Equipment Needed Equipment Description Digital multimeter DMM Fluke Mode...

Page 18: ...efault Settings as Power On Default on page 38 Battery Charge Perform the following procedure to fully charge the battery 1 Connect the N 560 to an AC power source 2 Verify that the N 560 is off and t...

Page 19: ...560 should complete the POST function within 12 seconds 1 Turn on the N 560 by pressing the Power On Off button for greater than 0 5 seconds 2 The N 560 displays sounds 1 Power On Off Button 5 Pulse...

Page 20: ...aker sounds a one second pass tone 4 While performing POST the self test display appears for approximately five seconds During this time All indicators illuminate All segments of all numeric digits li...

Page 21: ...one second tone indicating that the N 560 has passed the test WARNING If you do not hear the POST pass tone do not use the N 560 WARNING Ensure that the speaker is clear of any obstruction Failure to...

Page 22: ...limit is being adjusted Figure 4 Adjusting High SpO2 Alarm Limit 6 Press the SpO2 Alarm Limit button Within 3 seconds press and hold the Adjust Down button Verify that the SpO2 display reduces to a m...

Page 23: ...r On Off button 10 Turn the N 560 on by pressing the Power On Off button 11 Wait for POST to be completed The SpO2 and pulse rate alarm limits will be reset to the default values 12 Press the Pulse Ra...

Page 24: ...alarm limit setting minus one point 16 Turn the N 560 off by pressing the Power On Off button 17 Turn the N 560 on by pressing the Power On Off button 18 Wait for POST to be completed The SpO2 and pul...

Page 25: ...SpO2 Alarm Limit button Verify that the SpO2 display indicates an alarm limit of 100 25 Press the SpO2 Alarm Limit button two times rapidly Verify that the SpO2 display indicates an alarm limit of 85...

Page 26: ...to examine LED intensity control The red LED is used to verify intensity modulation caused by the LED intensity control circuit 1 Connect the N 560 to an AC power source 2 Connect a DOC 10 pulse oxime...

Page 27: ...n proper control of LED intensity 10 Press the Power On Off button to turn the N 560 off Operation with a Live Subject Patient monitoring involves connecting the sensor to a live subject for a qualita...

Page 28: ...ard at the default volume setting the SpO2 display indicates VOL the Pulse Rate display indicates the default setting of 4 2 Press the Adjust Down button while holding the Alarm Silence button until a...

Page 29: ...no longer audible 3 Press the Adjust Up button to return the beep volume to a comfortable level Pulse Oximetry Functional Tests These tests utilize the pulse oximetry functional tester SRC MAX to veri...

Page 30: ...st 1 for 60 bpm Test 2 SpO2 This procedure simulates an OXIMAX sensor attached to a patient indicating 75 percent blood oxygen saturation and 90 percent blood oxygen saturation The test setup procedur...

Page 31: ...O2 display a pulse rate of 60 pass criteria is 57 to 63 bpm Pulse Amplitude indicator display low level modulation low amplitude Pulse Amplitude indicator T est 1 BPM 1 Press the SRC MAX Pulse Rate se...

Page 32: ...play 75 SpO2 60 bpm test pass criteria is 57 to 63 bpm alarm Pulse Amplitude indicator low level modulation T est 2 SpO2 1 Press the SRC MAX SpO2 select button The SRC MAX SpO2 90 LED will light 2 The...

Page 33: ...at 75 SpO2 The test pass criteria is 73 to 77 SpO2 6 The N 560 will display 75 SpO2 pass criteria is 73 to 77 SpO2 60 bpm alarm Pulse Amplitude indicator low level modulation T est 3 Modulation Level...

Page 34: ...erform Test 2 SpO2 on page 22 The Pulse Amplitude indicator should indicate high level modulation 6 Press the SRC MAX Modulation selection button The SRC MAX Modulation LED will light 7 The N 560 Puls...

Page 35: ...and stabilize and illuminate 4 bars with each pulse beat 3 The N 560 will display 75 SpO2 test pass criteria is 73 to 77 SpO2 60 bpm test pass criteria is 57 to 63 bpm alarm Pulse Amplitude indicator...

Page 36: ...t the standards of and are performed in accordance with IEC 60601 1 EN 60601 1 Amendment 1 Amendment 2 and UL 2601 1 for instruments classified as Class 1 and TYPE BF and ANSI AAMI Standard ES1 Applic...

Page 37: ...nual 27 Note Patient Applied Risk Current and Patient Isolation Risk Current The leakage test lead from the test equipment must be connected to the N 560 SpO2 Sensor Port using a male 9 pin D type con...

Page 38: ...Performance Verification 28...

Page 39: ...udible alarm or decrease its volume if patient safety could be comprised Audible Alarm Settings The following paragraphs describe how to change the behavior of the audible alarm Operators can select t...

Page 40: ...can be set to 30 60 90 or 120 seconds or the alarm can be turned to Off Alarm Volume 1 Press and hold the Alarm Silence button until VOL is displayed in the SpO2 window 2 Press the Adjust Up or Adjus...

Page 41: ...ve 8 Time Set Each display XX means Selected XX means Numbers Use Adjust Up Adjust Down buttons to change numbers Use SatSeconds Alarm Limit button to save selection Year 1ST display XX at left numeri...

Page 42: ...it will begin to use the power on 11 Alarm silence restrictions 0 Allow OFF as a choice for alarm silence duration reminder will be sounded 0 Allows operator to select alarm silence Off but there will...

Page 43: ...or Adjust Down button The sub option being selected is displayed in the SpO2 display window Note Service menu items numbered above 5 cannot be accessed if a sensor is connected to the N 560 3 Once ad...

Page 44: ...d baud rate The baud rates will be displayed in the SpO2 window as 24 2400 96 9 600 or 192 19 200 The protocol setting menu item 5 EPP mode determines the baud rate that can be selected Option 1 ASCII...

Page 45: ...first pressing the SatSeconds Alarm Limit button when menu item 6 is displayed This function is only applicable to OXIMAX sensors that do not have any event data recorded in the sensor If the OXIMAX...

Page 46: ...nutes and Seconds may be viewed and set After selecting menu item 8 pressing the SatSeconds Alarm Limit button displays the Year and Month setting of the N 560 See Figure 10 The indicates that the Yea...

Page 47: ...olume pulse beep volume audible alarm silence duration alarm silence behavior in sensor event data type RS 232 Nurse Call polarity communications protocol data port language and baud rate are saved as...

Page 48: ...gs as shown in Table 4 three confirmation tones will be heard After menu item 10 has been selected cycle power to the N 560 and verify that the factory default values have been reinstated Alarm silenc...

Page 49: ...not allow the operator to select Alarm Silence Off When the desired option is indicated in the SpO2 display press the SatSeconds Alarm Limit button to set the current selection Note The low battery a...

Page 50: ...The default selection Option 1 will be activated the next time the N 560 is turned on WARNING Do not silence the N 560 audible alarm or decrease its volume if patient safety could be comprised Menu I...

Page 51: ...nds a confirmation tone Setting Institutional Defaults Sample Set alarm limits to the values established by your facility After all alarm limits are set you will access menu Item 9 to set the alarm li...

Page 52: ...to the institutional values 5 Simultaneously press SpO2 Alarm Limitbutton and Pulse Rate Alarm Limit button for over three seconds Menu Item 1 screen appears 6 Press the Adjust Up button until menu It...

Page 53: ...hnical Discussion on page 105 offers information on how the N 560 functions Who Should Perform Repairs Only qualified service personnel should open the N 560 housing remove and replace components or m...

Page 54: ...s down without apparent cause Power on page 44 2 Buttons N 560 does not respond properly to buttons being pressed Buttons on page 46 3 Display Alarms Display does not respond properly Alarms and other...

Page 55: ...750 mA to 830 mA with the Power switch on Replace power supply if above values are not met Check the cable connection between the Top Enclosure and the Front Panel PCB If the connection is good replac...

Page 56: ...attery leads The voltage measured should be 13 8 VDC to 14 2 VDC and the current should be 170 mA to 300 mA Replace power supply if above values are not met Table 6 Power Problems Continued Condition...

Page 57: ...e Main PCB Replace the Front Panel PCB See Front Case Disassembly on page 57 All Front Panel LED indicators do not light during POST Check the connection between the Front Panel PCB and the Main PCB R...

Page 58: ...te a pulse but the digital displays show zeroes The sensor may be damaged replace it Replace the Front Panel PCB Refer to Front Case Disassembly on page 57 SpO2 or pulse values change rapidly Pulse Am...

Page 59: ...cling the power clears these errors Table 11 lists the N 560 error codes and their meanings When one of these errors occur the N 560 sounds a low priority alarm that cannot be silenced except by power...

Page 60: ...2 front end has tripped 11 SpO2 front end reports incorrect system voltage 12 SpO2 front end reports other hardware problem 14 SpO2 front end reports communication channel overflow 16 SpO2 front end r...

Page 61: ...not initialized 272 SpO2 back end reports double fault 273 SpO2 back end reports date out of range error 274 SpO2 back end reports incompatible software version 275 SpO2 back end reports incorrect reg...

Page 62: ...RC corrupt 528 Current settings lost e g for UIF Institutional EEPROM section CRC corrupt 531 External watchdog failure 532 Power PC watchdog failure 533 Boot NVROM uninitialized error 534 Failed CRC...

Page 63: ...neous N 560 readings CAUTION For better electromagnetic compatibility ferrite cores are installed on some wires of the N 560 During reassembly do not move or remove the ferrite cores from their locati...

Page 64: ...suspected PCB follow the procedures in Disassembly Guide on page 53 to replace the PCB with a known good PCB Verify that the trouble symptom disappears and that the N 560 passes all performance tests...

Page 65: ...Panel Screws 3 Place the N 560 up side down and remove the five screws holding the cases together See Figure 14 Figure 14 N 560 Case Screws 4 Turn the N 560 right side up 5 Carefully separate the N 56...

Page 66: ...Disassembly Guide 56 Figure 15 Top Case Removal 6 Carefully disconnect the two cables from the main PCB See Figure 16 items 1 and 2 Figure 16 Separated Cases...

Page 67: ...ing Top and Bottom Cases on page 54 3 Disconnect the SpO2 cable connector from the NELL 3 PCB See Figure 17 item 1 Figure 17 Front case Wiring 4 Disconnect the speaker wire connector item 2 from the m...

Page 68: ...2 connected to the front PCB 8 Remove the front panel assembly from the top case assembly 9 Remove the bracket and screw connected to the front PCB See Figure 19 item 1 Figure 19 Front Case Bracket 1...

Page 69: ...ut of the front case See Figure 21 Figure 21 Front PCB Removed NELL 3 Removal 1 Perform the procedure Prior to Disassembly on page 54 2 Perform the procedure Separating Top and Bottom Cases on page 54...

Page 70: ...able connector from the NELL 3 PCB connector item 2 5 Carefully lift the NELL 3 PCB out of the top case See Figure 23 Figure 23 NELL 3 Removal Main PCB Removal 1 Perform the procedure Prior to Disasse...

Page 71: ...24 Front case Wiring 4 Disconnect the speaker wire connector item 2 from the main PCB 5 Disconnect the ribbon cable connector item 3 from the front case PCB 6 Remove the bracket screw connected to the...

Page 72: ...from the main PCB connector See Figure 26 item 1 Figure 26 Main PCB Removal 10 Disconnect the main PCB to front PCB cable from the main PCB connector item 2 11 Remove the three remaining screws holdi...

Page 73: ...mbly on page 54 2 Perform the procedure Separating Top and Bottom Cases on page 54 Figure 28 Power Supply Wiring 3 Unplug the wiring harness connector from the power supply item 1 4 Disconnect the AC...

Page 74: ...pply Screws 6 Lift the power supply out of the bottom case See Figure 30 Figure 30 Power Supply Removed Fan Removal 1 Perform the procedure Prior to Disassembly on page 54 2 Perform the procedure Sepa...

Page 75: ...p the two fan wires Figure 31 item 1 from the wiring harness 4 Unplug the fan wires connector 5 Remove the two screws holding the fan bracket to the bottom case See Figure 32 Figure 32 Fan Bracket Rem...

Page 76: ...g the fan to the fan bracket See Figure 34 Figure 34 Fan Screws Battery Removal 1 Perform the procedure Prior to Disassembly on page 54 2 Perform the procedure Separating Top and Bottom Cases on page...

Page 77: ...Manual 67 Figure 35 Battery Screws Note Hold onto the battery cover when turning the bottom case over See Figure 37 Figure 36 Battery Cover 4 Disconnect the battery wiring connector See Figure 37 ite...

Page 78: ...Removal 6 Lift the battery out of the case See Figure 38 item 2 Equipotential Terminal Removal 1 Perform the procedure Prior to Disassembly on page 54 2 Perform the procedure Separating Top and Bottom...

Page 79: ...al 69 Figure 39 Ground Wire 4 Remove the remaining nut and washer from the equipotential ground terminal See Figure 40 Figure 40 Equipotential Ground Terminal 5 Remove the equipotential ground termina...

Page 80: ...Disassembly Guide 70 Figure 41 Equipotential Ground Terminal Removed...

Page 81: ...al Services 1 800 635 5267 or your local Nellcor representative Refer to parts by the part names and part numbers Spare parts and accessories with part numbers for the N 560 are listed on the Internet...

Page 82: ...Home Use Guide Main PCB to front PCB cable 44 pin bus cable 12 Main PCB 55M 1 NELL 3 data cable 14 pin bus cable Nellcor SpO2 module NELL 3 version 1 8 1 0 19 Operator s manual PI cable 9 pin flexibl...

Page 83: ...Spare Parts N 560 Service Manual 73 Figure 42 Exploded View...

Page 84: ...Spare Parts 74...

Page 85: ...table carton with appropriate packing material to protect it during shipping Return the N 560 by any shipping method that provides proof of delivery General Instructions Pack the N 560 carefully Failu...

Page 86: ...560 and if necessary accessory items in the original packaging Figure 43 Packing 2 Place the N 560 into the shipping carton and seal the carton with packing tape 3 Label the carton with the shipping...

Page 87: ...e a corrugated cardboard shipping carton with a bursting strength of at least 200 pounds per square inch psi 3 Fill the bottom of the carton with at least two inches of packing material 4 Place the ba...

Page 88: ...Packing for Shipment 78...

Page 89: ...sors with the N 560 Neonate specifications are shown for OXIMAX MAX N sensors with the N 560 Saturation accuracy will vary by sensor type Refer to the Sensor Accuracy Grid The Sensory Accuracy Grid is...

Page 90: ...sec 150 msec Pulse repetition interval 20 msec double burst 150 msec Repetitions 3 High Priority Alarm Volume level Adjustable alarm volume Pitch 30 Hz 932 Hz Pulse width 20 msec Nellcor 255 msec IAW...

Page 91: ...c IAW EN 475 200 msec Pulse repetition interval 20 msec double burst Nellcor N A IAW IEC 60601 1 8 7600 msec IAW EN 475 20000 msec Repetitions Continually POST Pass Volume level Not changeable Pitch 3...

Page 92: ...Audible Indicator Parameter Value Instrument Power Requirements 100 to 240 volts AC 25 to 39 volt amps to be compliant with IEC 60601 1 sub clause 10 2 2 Fuses qty 2 2 A 250 volts slow blow IEC 5 x 20...

Page 93: ...C Altitude Barometric Pressure 390 m to 3 012 m 1 280 ft to 9 882 ft 70 kPa to 106 kPa 20 6 in Hg to 31 3 in Hg Relative Humidity 15 to 95 non condensing to be compliant with IEC 60601 1 sub clause 4...

Page 94: ...mW OXIMAX MAX R 52 5 mW OXIMAX Oxiband OXI A N 52 5 mW OXIMAX Oxiband OXI P I 52 5 mW OXIMAX Durasensor DS 100A 52 5 mW OXIMAX OxiCliq P 52 5 mW OXIMAX OxiCliq N 52 5 mW OXIMAX OxiCliq I 52 5 mW OXIM...

Page 95: ...Guidance FDA RG Nov 1993 Reviewers Guide for Premarket Notification Submission Safety EC EN 60601 1 1995 General Rqmts for Safety Medical Equipment Safety USA UL 60601 1 2003 Safety Medical Electrica...

Page 96: ...cal Electric Equipment Collateral Standard EMC Requirements and Test 2nd Edition 2001 EMC EN 55011 Class B Group 1 EMC Disturbance Characteristics Limits and Methods of Measurement Industrial Scientif...

Page 97: ...m Printer cable RS 232 15 to 9 pin D 10 ft 3 m Oxinet II data cable 10 ft 3 m HP Agilent interface cable 3 ft 0 9 m GE Marquette interface cable 3 ft 0 9 m Datex Ohmeda interface cable 3 ft 0 9 m MAX...

Page 98: ...power supply network that supplies buildings used for domestic purposes Harmonic Emissions IEC 61000 3 2 Class D Voltage fluctuations flicker emissions IEC 61000 3 3 Complies Table 16 Electromagnetic...

Page 99: ...from an uninterruptible power supply or battery 40 U T 60 dip in U T for 5 cycles Complies 70 U T 30 dip in U T for 25 cycles Complies 5 U T 95 dip in U T for 5 seconds Complies Power frequency 50 60...

Page 100: ...ned by an electromagnetic site survey a should be less than the compliance level in each frequency range b Interference may occur in the vicinity of equipment marked with this symbol Note 1 At 80 MHz...

Page 101: ...of the Transmitter W Separation Distance according to Frequency of Transmitter m 150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2 5 GHz 0 01 0 12 0 12 0 23 0 1 0 38 0 38 0 73 1 1 2 1 2 2 3 10 3 8 3 8...

Page 102: ...ersed Closed Closed 500 A 300 A Normal Open Closed 1000 A 500 A Normal Closed Open 1000 A 500 A AC Line Polarity NeutralLine Cord Power Line Ground Cord IEC 60601 1 UL 2601 1 AAMI ANSI ES1 Normal Clos...

Page 103: ...L 2601 1 AAMI ANSI ES1 Normal Closed Closed 100 A 10 A Normal Open Closed 500 A 50 A Normal Closed Open 500 A 50 A Reversed Closed Closed 100 A 10 A Reversed Open Closed 500 A 50 A Reversed Closed Ope...

Page 104: ...Specifications 94...

Page 105: ...rt supports two communication protocols Option 1 real time ASCII for printouts Option 2 enables communication with the external equipment Refer to the external equipment documentation for the interfac...

Page 106: ...e SatSeconds Alarm Limit button to set the selection Baud Rate Menu item 4 is used to select baud rate To access menu item 4 1 Disconnect the sensor cable 2 Press both the SpO2 Alarm Limit and Pulse R...

Page 107: ...eet 1 219 2 meters The pin outs for the data port are listed in Table 19 TXD and TXD are the differential transmit data pair RXD and RXD are the differential receive pair T able 19 Data Port Pinouts P...

Page 108: ...nt Connectors at both ends of the serial cable must have the shield terminated to the full 360 degrees of the connector s metal shell CAUTION Do not create sharp bends in the cable this may tear or br...

Page 109: ...C Audible Alarm 5 to 12 VDC Normally Low No alarm or Alarms Silenced 5 to 12 VDC Audible Alarm 5 to 12 VDC Pin No Alarm or Alarm Silenced Audible Alarm N 560 Turned Off 7 N O Open Closed Closed 8 N C...

Page 110: ...ing on AC power Figure 45 Real Time Printout Column Heading To explain the printout it will be necessary to break it down to its key components The first three lines of the chart are the Column Headin...

Page 111: ...ther of these numbers should change during normal operation The numbers will change if the N 560 is serviced and receives a software upgrade Alarm Limits The last data field in the top line indicates...

Page 112: ...ighlighted in the patient data display Parameter values are displayed directly beneath the heading for each parameter In this example the SpO2 is 100 and the pulse rate PR is 190 beats per minute The...

Page 113: ...able 20 Note A Sensor Disconnect will also cause three dashes to be displayed in the patient data section of the printout Table 20 Status Codes Code Meaning AO Alarm Off AS Alarm Silence BU Battery in...

Page 114: ...Data Port Interface Protocol 104...

Page 115: ...d throughout this manual Pulse oximetry is based on two principles that oxyhemoglobin and deoxyhemoglobin differ in their absorption of red and infrared light i e spectrophotometry and that the volume...

Page 116: ...globin expressed as a percentage of the hemoglobin that can transport oxygen It does not detect significant amounts of dysfunctional hemoglobin such as carboxyhemoglobin or methemoglobin In contrast h...

Page 117: ...anaging SatSeconds Signal Processing The N 560 takes advantage of increased microprocessing power with advanced mathematical algorithms OXIMAX advanced signal processing allows the N 560 to provide ac...

Page 118: ...ed too tightly incorrect sensor for placement site intravascular dyes such as indocyanine green or methylene blue externally applied coloring agents such as nail polish dye or pigmented cream failure...

Page 119: ...560 will begin monitoring The sensor model number disappears once the N 560 starts tracking the patient s SpO2 and pulse rate Monitors containing OXIMAX technology including the N 560 use calibration...

Page 120: ...10 Figure 47 NELL 3 Interface Table 21 NELL 3 J1 Pinouts Pin Signal 1 DETECTOR 2 DIGICAL Ground 3 DIGICAL 1 wire interface 4 DETECTOR 5 Inner Shield Ground 6 No connection 7 LED 8 No connection 9 LED...

Page 121: ...o the appropriate schematic diagram at the end of this section as necessary Table 22 NELL 3 J2 Pinouts Pin Signal 1 C LOCK Input 2 Ground 3 Ground 4 Reset Input 5 Ground 6 12 V Power Input 7 Analog Ou...

Page 122: ...ttons allowing the user to access information and to select various available parameters The Front Panel PCB contains SpO2 heart rate and Pulse Amplitude indicator LEDs and SatSeconds Display LEDs The...

Page 123: ...ower used in the N 560 The positive output is the MAIN_DC of 14 volts DC This positive voltage is used for the battery circuit and to power the Main PCB Battery A nickel metal hydride battery is used...

Page 124: ...will be unable to begin monitoring a patient if the battery voltage remains below this point If either event occurs plug the N 560 into an AC source for 6 hours to allow the battery to fully charge T...

Page 125: ...it stores a data point in memory every four seconds regardless of whether the N 560 is monitoring a patient or not Alarm limit changes will also be stored in trend data The N 560 can store up to 24 h...

Page 126: ...ay illuminates with SatSecond values The first segment of the 8 segment display indicates the SatSecond alarm on off The number of segments illuminated indicates the relative values of the SatSecond S...

Page 127: ...Technical Discussion N 560 Service Manual 117 Figure 49 Main PCB Battery Charger Schematic Diagram...

Page 128: ...Technical Discussion 118...

Page 129: ...Technical Discussion N 560 Service Manual 119 Figure 50 Main PCB Isolation for NELL 3 Schematic Diagram...

Page 130: ...Technical Discussion 120...

Page 131: ...Technical Discussion N 560 Service Manual 121 Figure 51 Main PCB Isolation for External Interface Schematic Diagram...

Page 132: ...Technical Discussion 122...

Page 133: ...Technical Discussion N 560 Service Manual 123 Figure 52 Main PCB DC Battery Input and DC DC Converter Schematic Diagram...

Page 134: ...Technical Discussion 124...

Page 135: ...Technical Discussion N 560 Service Manual 125 Figure 53 Main PCB Interface and Speaker Control Schematic Diagram...

Page 136: ...Technical Discussion 126...

Page 137: ...Technical Discussion N 560 Service Manual 127 Figure 54 Main PCB MCU and Storage Control Schematic Diagram...

Page 138: ...Technical Discussion 128...

Page 139: ...Technical Discussion N 560 Service Manual 129 Figure 55 Main PCB Parts Locator Diagram...

Page 140: ...Technical Discussion 130...

Page 141: ...Technical Discussion N 560 Service Manual 131 Figure 56 Front Panel PCB 7 Segment Display Schematic Diagram...

Page 142: ...Technical Discussion 132...

Page 143: ...Technical Discussion N 560 Service Manual 133 Figure 57 Front Panel PCB LED Display and Buttons Schematic Diagram...

Page 144: ...Technical Discussion 134...

Page 145: ...Technical Discussion N 560 Service Manual 135 Figure 58 Front Panel PCB Interface and LED Drivers Schematic Diagram...

Page 146: ...Technical Discussion 136...

Page 147: ...Technical Discussion N 560 Service Manual 137 Figure 59 Front Panel Parts Locator Diagram...

Page 148: ...Technical Discussion 138...

Page 149: ...Technical Discussion N 560 Service Manual 139 Figure 60 Power Supply Schematic Diagram...

Page 150: ...Technical Discussion 140...

Page 151: ...Technical Discussion N 560 Service Manual 141 Figure 61 Power Supply Parts Locator Diagram...

Page 152: ...Technical Discussion 142...

Page 153: ...115 circuit analysis 111 cleaning 5 connecting to the data port 97 controlling hardware theory 114 CPU theory 114 D data port interface protocol 95 data port problems 49 description of N 560 pulse ox...

Page 154: ...applied risk current 26 patient isolation risk current 26 performance tests 8 performance verification 7 periodic safety checks 5 PH 103 PL 103 POST 9 power problems 45 power supply PCB theory of ope...

Page 155: ...tion risk current 93 patient risk applied current 93 physical 85 safety tests 92 specifications performance 79 SRC MAX 19 storage altitude 83 barometric pressure 83 relative humidity 83 temperature 83...

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Page 158: ...ationally registered trademarks of Covidien AG Trademark of its respective owner Other brands are trademarks of a Covidien company 2011 Covidien Covidien llc 15 Hampshire Street Mansfield MA 02048 USA...

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