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Nellcor NPB-40 Handheld Pulse Oximeter Service Manual

Contents

1. 55 Facking 59 regere Lej 59 Returning the NPB 40 seansni 59 Repacking in Original nenn 59 Packing in a Different Carton 60 crc e gn ce 63 xem 63 reis m 67 Environmental Conditions 2 enne 68 Physical Characteristics 69 69 Manufacturer s Declaration sss ene 69 Technical DISDUBSIUD EQUOS QE Sd 19 Oximetry 75 Functional versus Fractional Saturation 75 Measured versus Calculated Saturation 76 SatSeconds Alarm 76 Reads Through Motion 2 244424 77 OXIMAX Technology dnce 77 Block Diagram TROON 77 SpO2 Printed Circuit Board 78 Patient Interface 78 eda 79 Power Monitoring 2 44444000 79 User Interface Printed Circuit Boa
2. 95 User Interface PCB Schematic Diagram Sheet 1 of 3 97 User Interface PCB Schematic Diagram Sheet 2 of 99 User Interface PCB Schematic Diagram Sheet of 101 Contents Tables NPB 40 Table 1 Table 2 Table 3 Table 4 Table 5 Table 6 Table 7 Men Str CtUre 7 Time Set Menu tete 8 Troubleshooting 34 Eror s eue MU RM EET 37 Parts and Accessories nnn nnn nnna 55 Electronic Emissions 71 Electromagnetic Immunity 72 Tables vi This Page Intentionally Blank Introduction Warnings NPB 40 gt b Warnings are identified by WARNING symbol shown above Warnings alert the user to potential serious outcomes death injury or adverse events to the patient or user WARNING The sensor uses the date and time provided by the NPB 40 handheld pulse oximeter when the sensor event record is recorded by the sensor The accuracy of the date time is dependent on the date time already set in and provided by the NPB 40 WARNING Explosion hazard Do not use the NPB 40 in the presence of flammable anesthetics mixed with air oxygen or nitrous oxide WARNING Do not spray pour or spill any liquid on the NPB 40 its accessories connectors switches or openings in the
3. 47 Connecting PGBS 47 Battery Spring Alignment 2 48 Installing The Case Screws see 48 Battery installation ce rte tette ree cereis 49 Front Case Ribbon Cable Connection 50 Locking CPU PCB Connection to 50 Installing The Case Screws 51 Battery Installation 51 Display PCB and CPU PCB Removal 52 Battery Spring Alignment 2 53 Installing The Case Screws 53 Battery Installation 54 Battery Compartment Door Latch 54 Exploded VIeW idi 57 PACKING 60 Oxyhemoglobin Dissociation Curve 76 78 SpO2 PCB Schematic Diagram Sheet 1 of 7 83 5 2 PCB Schematic Diagram Sheet 2 of 7 85 5 2 PCB Schematic Diagram Sheet of 7 87 5 2 PCB Schematic Diagram Sheet 4 of 7 89 SpO2 PCB Schematic Diagram Sheet 5 of 7 91 5 2 PCB Schematic Diagram Sheet 6 of 7 93 SpO2 PCB Schematic Diagram Sheet 7 of 7
4. o Note The software version shown above is only a sample Check your NPB 40 for the software version installed Technical Services Department or your local Nellcor representative for technical assistance Write down the software version number and have it available prior to requesting technical assistance 9 Note Software version numbers are often needed when calling Nellcor s NPB 40 17 Performance Verification 5 The current time is shown in a 24 hour format 96 SpO2 Q min 6 Ifthe NPB 40 detects an internal problem during POST an error tone sounds and the NPB 40 shows an error code Er and the corresponding error number see Troubleshooting on page 33 SpOz2 Q min 123 JE 7 Upon successful completion of the POST the NPB 40 sounds a one second tone indicating that the NPB 40 has passed the test WARNING If you do not hear the POST pass tone do not use the NPB 40 WARNING Ensure that the speaker is clear of any obstructions and that the speaker holes are not covered Failure to do so could result in an inaudible alarm tone also functions as an audible confirmation that the speaker is performing properly If the speaker does not function the alarm warning sounds cannot be heard 9 Note In addition to serving as the POST pass verification the POST pass tone 18 Performance Verification 8 Press the Alarm Silence button The Alarm Silenced indicator is displ
5. LEVEL SHIFTER 99 T102 T104 T106 7108 7110 T127 T111 T112 T114 T116 T118 RP17 100 018 AAALS 1 BXDSV 0 E 1 3 RXD3V 4 6 PIC TX5V gt 2 RAL 3 4 6 PIC_RED_IRSV 7 a 4 RED IR3V 4 pie synes mulla 4 ANN EEPE 7 gt gt DIGICAL_IN3V 4 lt gt RP18 100 gt gt PIC_SYNC3V 4 OE GN 74LVG244APW C45 gt gt RST_L5V 4 DIGICAL IN5V 5016 A C66 C48 3V Voltage T2 29941 10U 100 021 L4 Q A 0 105V 10V 10V 6 4 DIGICAL_OUT_L 69 10UH C47 C67 9 52 C63 PIC SYNC5Y 10U 10U 768 22P 10V ioy 4 DIGICAL_PGM gt 70 8 PLL LPF 24 lt ITH 4 C64 GND 0 01U 1878 T72 R53 280K T73 Board Edge Test Points C65 R61 220P T101 T105 T103 T107 10 08 2 5 5 T109 T113 T115 T117 T119 Technical Discussion 5ANALOG gt gt PIC_RX5V 6 to 5V LEVEL C50 SHIFTERS IXD5V TXD5V 1 12 5 R69 4 99K Q8B MBT3906DW gt gt DIGICAL 6 D7 T66 RP21 4 4 LAAN T67 AAA BAT54SWT1 9 EB ASA VAI Q9B V VS MBT3904DW 10K NZ Notes Resistors are 1 1 16W unless otherwise noted R Packs are 5 1 32W unless otherwise noted CB junction of Q8B is used as a diode Figure 33 SpO2 Schematic Diagram Sheet 7 of 7 95 Technical Discussion This Page Intentionally Blank 96 40 27
6. Q min 4 Press the SRC MAX SpO2 select button The SRC MAX 5 2 75 LED lights NPB 40 27 Performance Verification 5 NPB 40 shows two dashes until the SRC MAX stabilizes at 75 5 2 The test pass criteria is 73 to 77 SpO2 inclusive 6 The NPB 40 e displays 75 SpOz pass criteria is 73 to 77 SpO2 inclusive e displays 60 bpm e alarms e Pulse Amplitude indicator displays low level modulation Test 43 Modulation Level 1 Press the SRC MAX MODULATION selection button The SRC MAX 96 MODULATION amp LED lights 2 The NPB 40 pulse blip bar initially increases in amplitude and then stabilizes 9 SpO2 Q min 3 The NPB 40 e displays 75 SpO2z test pass criteria 15 73 to 77 5 2 inclusive e displays 60 bpm test pass criteria is 57 to 63 bpm inclusive alarms e Pulse Amplitude indicator displays high level modulation 4 Perform Test 1 BPM on page 26 The Pulse Amplitude indicator should indicate high level modulation 28 10 Performance Verification Perform Test 2 SpO2 on page 27 The Pulse Amplitude indicator should indicate high level modulation Press the SRC MAX MODULATION selection button The SRC MAX MODULATION LED lights The NPB 40 pulse blip bar decreases in amplitude SpO2 Q bU A 9 0 0 0 o 40 e displays 75 gt e displays 60 bpm alarms e Pulse Amplitude indicator displays low l
7. One or more keys on the front panel keypad does not work The front panel keypad is defective Caution Unlock J3 before attempting to remove flex circuit conductor Open the NPB 40 disconnect the front case from 73 on the CPU PCB and connect an ohmmeter lead to the flex circuit conductor for J3 pin 3 and individually connect the other ohmmeter lead to each conductor for the buttons Refer to the front panel schematic diagram Observe a short when the button is pressed and an open when the button is not pressed If incorrect replace the front case See Front Case Assembly Replacement on page 49 If correct replace the CPU PCB See CPU PCB or Display PCB Replacement on page 46 Flex circuit between the front panel and the CPU PCB is disconnected Inspect the flex circuit and reconnect if the flex circuit is loose See Separating the Front and Back Cases on page 44 A CPU PCB Component has failed Inspect the CPU PCB components and circuit board for cracking burning or damage and replace the CPU PCB if any are found See CPU PCB or Display PCB Replacement on page 46 CPU PC has failed Replace the CPU PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 One or more display segments does not work A display PCB component has failed Inspect the Display PCB for cracking burning or damage and replace the Display PCB if any damage is found See CPU P
8. 0 1uF Technical Discussion 1V21B 2 C10 0 1uF 7 gt 1V8 z our i a can SDN BYP C20 MBRO520L 5 01 4 7uF C67 0 01u V5DIG 3 0 1uF C9 2 0 1uF C68 0 1uF T21 a PUR up 9 3V0 U19 Open Drain Outputs 02 0518325 R1 5 11K KWD_STB2 Sco RIMS UC RSTN2 VCHK OK 2 COM SPO2V_GOOD 2 4 C1 0 1uFNZ 3V0 VA zu o R6 R8 U3 1 gt Tr 3V0 30 1K _ 0513382 3 VBATTERY I H339 A SQW OUT amp 7 21 21 2 RTC_SDAT 1 0M L al 1 RTC_SCLK 01 005 m 5 RS uci d MI R77 3 6v TUM 30 1 2 _ 14 Gs 1 2 R73 R75 23 562 2 PWR_CMPN io 13 VcMPN 2 100pF C24 R74 150K 649K 3 12 C22 100pF VON 100pF lt gt 1V8 A 3V0 VCMP 2 1 2 PWR_CMPN gt Figure 34 User Interface PCB Schematic Diagram Sheet 1 of 3 97 Technical Discussion This Page Intentionally Blank 98 40 15 C33 34 35 36 37 38 010 AT91R40008 HI 40 C41 3V0 0 1uF 0 0 1 1RTC_SDAT PO TCLKO 14 15 A12 3 1RTC SCLK P1 TIOAO 30 1K 3 BK LIGHT P3 TCLK1 M g_Test X 3 BZ FRQ P4 TIOAt 3V0 3 PWR_BZN PS TIOB1 65 T 82 OSN P6 TCLK2 1 WR P7 TIOA2 28 20 57 PWR_OFF P8
9. Pitch 30 Hz 500 Hz On pulse width 130 msec 20 msec Off Interval 20 msec 130 msec Number of pulses in burst Repetition Pause 179 27 sec 2 sec Priority 8 65 Specifications 66 Audible Indicators Continued Audible Val Indicator Parameter ue High Priority Volume level Adjustable 42 to 52 Alarm dB A at one meter Pitch 30 Hz 1200 Hz On pulse width 250 msec 20 msec Off Interval 20 msec 80 msec Number of pulses in burst 1 Repetition Pause 0 sec 2 sec Priority 9 Medium Priority Volume level Adjustable 42 to 52 Alarm dB A at one meter Pitch 30 Hz 752 Hz On pulse width 400 msec 20 msec Off Interval 20 msec 300 msec Number of pulses in burst 1 Repetition Pause 0 sec 2 sec Priority 10 Low priority Alarm Volume level Adjustable 42 to 52 dB A at one meter Pitch 30 Hz 500 Hz On pulse width 400 msec 20 msec Off Interval 20 msec 3200 msec Number of pulses in burst 1 Repetition Pause 0 sec 2 sec Priority 11 Electrical NPB 40 Batteries Specifications The batteries provide at least 15 hours of battery life with no alarms no printing and with backlight on while using a pulse simulator set for 200 bpm high light and low modulation Type 4 AA alkaline Voltage 1 5
10. Note longer screws install at the top of the case See Figure 20 items 1 4 6 Place the front and rear cases together and install the four screws See Figure 20 Figure 20 Installing The Case Screws NPB 40 53 Disassembly Guide 7 Install the batteries and battery cover See Figure 21 Figure 21 Battery Installation 8 Perform the performance verification tests before placing the NPB 40 into service See Pulse Oximetry Functional Tests on page 24 Battery Compartment Door Replacement Perform the following procedure to replace the battery compartment door 1 Press battery door latch Figure 22 item 1 and lift the battery door from the NPB 40 rear case Figure 22 Battery Compartment Door Latch 2 Insert new battery compartment door in case and close until the battery door latch snaps in place 54 Spare Parts Introduction The latest version of this manual is available on the Internet at http www mallinckrodt com respiratory resp Serv_Supp ProductManuals html Spare parts are shown in Table 5 Item numbers correspond to the callout numbers in Figure 23 Obtaining Replacement Parts Nellcor s Technical Services provides technical assistance information and replacement parts To obtain replacement parts contact Nellcor s Technical Services or your local Nellcor representative Refer to parts by the part names and part numbers Spare parts and accessories for the NPB 40 are liste
11. 3 Remove the batteries 1 Batteries 2 Battery cover 3 Battery cover latch Figure 4 Installing Batteries Separating the Front and Back Cases Do the following procedure to separate the NPB 40 front and back cases 1 Do the procedure in paragraph Prior to Disassembly on page 43 2 Remove the four screws holding the NPB 40 front and rear cases together See Figure 5 items through 4 Figure 5 NPB 40 Case Screws 44 Disassembly Guide Caution A cable runs between the NPB 40 front and rear case assemblies Use care when separating the cases Do not apply stress to the cable 3 Separate the NPB 40 front and rear case assemblies See Figure 6 1 Connector J3 Figure 6 Cases Separated Caution Failure to unlock connector J3 on the CPU PCB before attempting to remove the front case flex circuit could damage the flex circuit 4 Unlock connector J3 on the CPU PCB See Figure 6 and Figure 7 1 CPU PCB 2 J3 lock 3 Lock direction 4 Unlock direction Figure 7 CPU PCB Connector J3 Lock 5 Disconnect the ribbon cable from CPU PCB connector J3 NPB 40 45 Disassembly Guide CPU or Display PCB Replacement 46 Do the following procedure to replace the CPU PCB the display PCB 1 Do the procedure in paragraph Prior to Disassembly on page 43 2 Do the procedure in paragraph Separating the Front and Back Cases on page 44 Caution
12. AA 3 2 6 4 3 2 6 4 Power Watchdog Monitoring Reset Power SpO2 Power Good Backlight Monitoring Serial Patient Interface Interface Patient Sensor External Printer Figure 26 Block Diagram SpO Printed Circuit Board The SpO2 PCB provides patient interface and NPB 40 operating power Patient Interface The patient interface receives signals from the patient sensor These signal are converted and supplied to the user interface PCB central processing unit CPU The patient interface receives control signals from the CPU These control signals are used to control the light emitting diodes in the patient sensor 78 Technical Discussion Power Supply The power supply provides operating voltages to the SpO2 PCB and the user interface PCB These voltages are supplied to the e SpO2 PCB power monitoring function e SpO2 PCB circuits e user interface PCB power supply user interface PCB CPU e user interface PCB audio circuits Power Monitoring The SpO2 power monitoring function monitors and controls the outputs of the SpO2 power supply The SpO2 power monitoring function provides the user interface CPU SpO2 patient interface with status information on the power supply output signals User Interface Printed Circuit Board The user interface PCB provides e User setup of the NPB 40 via the keypad e Patient SpO2 and pulse rate via
13. RB2 5 PIC RB3 5 PIC RB4 5 PIC RB6 5 RB 5 5ANALOG 5ANALOG 5 A A gt gt PIC_RC3 5 PIC_TX5V 7 5 LED IDRV RX5V 7 Nw T84 1850 10 000MHZ 100 PIC RD6 5 4 4 PIC_RD7 5 9 ie Q7A C41 XYY 7 DIGICAL MBT3904DW C40 41208ESD 33P 33P PIC_RE1 5 D3B PIC_REO 5 7 5ANALOG 6 R11 T ESD T61 20 0K Notes T96 L1 2512063017Y0 R94 511 Q Resistors are 1 1 16W unless otherwise noted 13 Wy gt gt 5 Q2 Packs are 5 1 32W unless otherwise noted L2 2512063017Y0 C42 MMBF2201 E nens 95 511 5 LLL DLW31SN222SQ2B gt DET 5 Sensor 6 LLLA 197 D5 C43 NZ Cable LED 47P C44 T62 E BAV99LT1 47P 10 5ANALOG 5 TPS77025 HEADER 10 lt V gt 5 Figure 32 5 SpO2 Schematic Diagram 41206ESD Sheet 6 of 7 NPB 40 93 Technical Discussion This Page Intentionally Blank 94 5 2 Side 12 5DIG 5ANALOG A T950 91 2 L5 L6 2512063017Y0 2512063017Y0 T93 1 1 12V lt 5VDIG lt 5VANALOG lt gel 1 2 7 4 L 3 5 9 6 2 i E TXD5V T et j T92 T94 T130 HEADER 7X2 DO NOT INSTALL X7 T124 T98 MAIN BOARD SIDE P S SIDE 5DIG 5 74 6 625 2 PIC_CLK gt gt 12MHZ 100 7 10 rad 74HC161PW C60 0 1U 40 5V to
14. Some examples of illegal dates are 30 February 31 February Introduction 31 April 31 June 31 September 31 November 29 February a non leap year Related Documents To perform test and troubleshooting procedures and to understand the principles of operation and circuit analysis sections of this manual you must know how to operate the NPB 40 Refer to the NPB 40 operator s manual To understand the various Nellcor approved sensors that work with the NPB 40 refer to the individual OxiMAx sensor s Directions For Use The latest version of the operator s manual and the service manual are posted on the Internet at http www mallinckrodt com respiratory resp Serv_Supp ProductManuals html Spare Parts and Accessories are posted on the Internet at http www mallinckrodt com respiratory resp Serv Supp Apartweb main PartAcceMenu html NPB 40 9 Introduction This Page Intentionally Blank 10 Routine Maintenance Cleaning WARNING Do not spray pour or spill any liquid on the NPB 40 its accessories connectors switches or openings For surface cleaning and disinfecting follow your institution s procedures or NPB 40 may be surface cleaned by using a soft cloth dampened with either a commercial nonabrasive cleaner or a solution of 70 percent alcohol in water and lightly wiping the surfaces of the NPB 40 NPB 40 may be disinfected using a soft cloth saturate
15. The battery connectors spring assemblies at the bottom of the CPU PCB are held in slots in the battery compartment Observe how these connectors are engaged in these slots when you remove the CPU PCB and display PCB and ensure that the battery connectors are inserted back into these slots when you reassemble the NPB 40 3 Pull the CPU PCB and display PCB to the left and lift the CPU PCB and display PCB from the case See Figure 8 Figure 8 Display PCB and CPU PCB Removal Caution Do not force the display PCB and CPU PCB apart This may damage the boards Gently work the boards apart To separate the Display PCB and the CPU PCB grasp the display PCB in one hand and the CPU PCB in the other Rotate the ends of the two PCBs as shown in Figure 9 until the two PCBs separate at the connectors J1 and J2 Disassembly Guide 4 Separate the display PCB from the CPU PCB See Figure 9 1 Jl 2 Display PCB 3 J2 4 CPU PCB Figure 9 Separating the Display PCB and CPU PCB 5 Place the defective PCB to the side 6 Align the new PCB J1 and J2 and the removed good PCB J1 and J2 and gently press them together See Figure 10 1 Jl 2 Display PCB 3 J2 4 Figure 10 Connecting PCBs NPB 40 47 Disassembly Guide 7 Install the display PCB and CPU PCB into the NPB 40 case Ensure that the battery springs slip into place See Figure 11 Figure 11 Battery S
16. a pulse rate of 60 pass criteria is 57 to 63 bpm inclusive NPB 40 25 Performance Verification e Pulse Amplitude indicator show low level modulation low amplitude pulse amplitude indicator SpOz Q min Test 1 BPM 1 Press the SRC MAX PULSE RATE selection button The SRC MAX PULSE RATE 200 LED lights 2 The NPB 40 bpm increases to 200 and stabilize at 200 bpm The test pass criteria is 197 to 203 bpm inclusive 3 The NPB 40 e displays 75 SpOz2 displays 200 bpm pass criteria is 197 to 203 bpm inclusive alarms e Pulse Amplitude indicator displays low level modulation 96 SpO2 Q min 4 Press SRC MAX PULSE RATE select button SRC MAX PULSE RATE 60 LED lights 26 Performance Verification 5 The NPB 40 pulse rate decreases to 60 and stabilize at 60 bpm The test pass criteria is 57 to 63 bpm inclusive 6 The NPB 40 e displays 75 SpO2 e displays 60 bpm test pass criteria is 57 to 63 bpm inclusive e alarms e Pulse Amplitude indicator displays low level modulation Test 2 SpO2 1 Press the SRC MAX SpO2 select button The SRC MAX 5 2 90 LED lights 2 The NPB 40 displays three dashes until the SRC MAX stabilizes at 90 Jo SpO2 The test pass criteria is 88 to 92 SpO2 inclusive 3 The NPB 40 e d displays 90 5 2 pass criteria is 88 to 92 6SpO2 inclusive d displays 60 bpm alarms e Pulse Amplitude indicator displays low level modulation 5
17. are controlled The customer or user of the NPB 40 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment transmitters and the NPB 40 as recommended below according to the maximum output of the communications equipment Recommended Separation Distances between Portable and Mobile RF Communications Equipment and the NPB 40 IEC 60601 1 2 Frequency of 150 kHz to 80 MHz to 800 MHz to Transmitter 80 MHz 800 MHz 2 5 GHz Equation E _ 35 kA ngge ege ege Rated Maximum Separation Separation Separation Output Power of Distance in Distance in Distance in Transmitter in Meters Meters Meters Watts 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 7 3 100 12 12 23 For transmitters rated at maximum output power not listed above the separation distance can be estimated using the equation in the corresponding column where P is the maximum output power rating of the transmitter in watts W according to the transmitter manufacturer Note At 80 MHz to 800 MHz the separation distance for the 2 higher frequency range applies Note These guidelines may not apply in all situations Electromagnetic propagation is affected by absorption and reflection from structures objects and people 40 Table 6 Electronic Emissions The NPB 40 is intended for use in the electromagnetic environment sp
18. board SpO2 front end RAM error 2 X Replace SpO2 board SpO2 front end ROM code integrity error 3 X Replace SpO2 board SpO2 front end reported a bad CRC 4 X Replace SpO2 board SpO2 front end reported FSP message not allowed 37 Troubleshooting 38 Scope of Action Table 4 Error Codes Continued Explanation Code 2 E gt Q Q Q 24 24 5 X Replace SpO2 board SpO2 front end reported illegal value sent in FSP message 6 X Replace SpO2 board SpO2 front end reports calibration offset failure 9 X Replace SpO2 board SpO2 front end reported syntax error in FSP message 10 X Replace SpO2 board Check Over current limit in SpO2 front end extension cable SRC Max has tripped 11 1 2 1 Replace batteries SpO2 front end reports incorrect 2 Replace SpO2 board system voltage 12 X Replace SpO2 board SpO2 front end reports other hardware problem 14 X Replace SpO2 board SpO2 front end reports communication channel overflow 16 X Replace SpO2 board SpO2 front end reports watchdog time out 17 X Check replace sensor SpO2 front end reports that sensor extension cable appears defective 18 X Replace SpO2 board SpO2 front end reports internal register appears modified from expected value 19 X Check replace sensor SpO2 front end reports signal out of extension cable range 48 X Replace SpO2
19. is B2 1 1 E R106 100K IRLML6401 T166 T167 Q Q 1 R101 3 BAT54SWT1 301K 2 T170 175 010 5 065 168 169 55138 2 q13 R107 49 9K C103 47 N NZ T172 Q R108 1 PWR ON gt 1008 Figure 28 2 Schematic Diagram Sheet 2 of 7 NPB 40 85 Technical Discussion This Page Intentionally Blank 86 T133 T135 T136 5VDIG gt J6 pin 13 TA S L7 O C76 Q D8 031 MP506 sheet 7 R99 VOU 1 OUT 2 4 10R R81 SDN BYP DU 4 7U 1 0M LT1761ES5 5 586 7 T139 R82 274K 5VANALOG 5VANALOG gt J6 pin 10 506 sheet 7 A 5VANALOG gt R97 sheet 1 1 2 032 gt R97 OUT 2 4 108 97 SUN _ C90 LT1761ES5 5 0 010 4 70 7 845K 12V 12VR T140 A A R89 12VR gt 42 pin 1 UI board pg1 12VR gt 14 pin 3 4 thi 10uH 12 gt 46 pin 6 MP506 10 KLEUR A gt HENA pin 3 4 tnis page connector U35 1 117808058 1 25 117 gt 04 yeh 5 T T T 1455 026 A LP339 S7 N R1172 R1162 R92 2 R114 2 OK 1 1 0M 1 0M 1 0M 100K E T143 T144 Tue T Er eO EL Q ae gt e R88 ners ES 294K 15 8K 1 gt 0 1uF WY NPB 40 Technical Discussion 5VRDIG 5VRDIG gt 14 2 this sheet 5VRDIG gt 232 level shifters
20. of each test e Test Setup This procedure establishes the baseline for all the other tests The Test Setup procedure must be performed before performing any or all of the SRC MAX tests Test 1 BPM This procedure simulates an OxiMAx sensor attached to a patient indicating 60 bpm and 200 bpm The test setup procedure sets up Test 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 24 Performance Verification blood oxygen saturation The test setup procedure sets up Test 2 for 75 percent blood oxygen saturation e Test 3 Modulation This procedure simulates an OxiMAx sensor attached to a patient indicating low and high pulse strength The test setup procedure sets up Test 3 for low pulse strength Test 4 Light This procedure simulates an OxiMAx sensor attached to a patient indicating low and high light level passing through the patient at the sensor site The test setup procedure sets up Test 4 for low light level Test Setup 1 Sensor Port 9 Note 4 extension cable may be used between the SRC MAX and the 40 1 Connect the SRC MAX tester to the NPB 40 sensor port 0 2 Turn the NPB 40 by pressing the Power button 3 After the NPB 40 completes POST the NPB 40 e sin SpO2 alarm Shows an 5 2 of 75 pass criteria is 73 to 77 SpOz2 inclusive e Shows
21. of the Menu button in this menu sequence shows five time date parameter setting displays that allows the user to set Hour Minute Day Month and Year and then return to the POST display Structure Introduction Table 1 Menu Structure of Parameter Presses Function SpO Low Limit Adjust limit SpO High Limit Adjust limit BPM Low Limit BPM High Limit Adjust limit Adjust limit Pulse Beep Volume Adjust volume Indications on blip bar Alarm Volume Adjust volume Indications on blip bar Print Data 00000000 00 00 00 00 00 Print summary and or stored snap shot and sensor event data NPB 40 Introduction Table 2 Time Set Menu of Parameter Press Function Presses must be pressed during the 40 POST Hour Adjust 1 to 23 Minute Adjust 1 to 59 Adjust 1 to 31 Month Adjust 1 to 12 Year Adjust 2003 to 2099 0 0 0 00 When month entry is made the NPB 40 checks the day selection to see if it is correct If the day selection is not valid for the month selected the NPB 40 display returns to the day selection display When the year entry is made the NPB 40 checks the day and month selections to see if they are correct If the day or month selection is not valid for the year selected the NPB 40 display returns to the day selection display
22. sheet 1 5VRDIG gt R99 sheet 1 5VRANA 5VRANA gt 14 1 this sheet Figure 29 SpO2 PCB Schematic Diagram Sheet 3 of 7 87 Technical Discussion This Page Intentionally Blank 88 5 lt AT91R40807 gt Place caps as close as practical to U22 two per side AO NLB C52 C53 C54 C55 C56 C57 C58 C59 0 1U FLASH PROGRAM MEMORY lt lt lt lt lt lt lt lt lt DUUUUUUUU 27 28 62 94 DQO 95 RP3 100 Eo Se 5 DQ3 TCLKO 11 E Bou TIOA A12 8 B 43V 7 PIC SYNC3V gt AM oos 7 PIC_RED_IR3V 14 2 1 4 TCLK1 A15 pag 7 DIGICAL_PaM lt lt TIOA1 ATE Das R112 TIOB1 A17 DQ10 Ei S 0012 0013 0014 DQ15 A 1 P31 A23 CS4 4544 NZ RP20 06 E xd d ES 7 Digleal Our lt 58 Pz rioA2 P28 A20 CS7 59 eerrioB2 P29 A21 CS6 UNUSED INPUTS 7 DIGICAL_IN3V gt P30 A22 CS5 1 RQO T740 PIC RX3V lt lt i Roe E 7 TXD3V lt lt 7 PIC TX3V S NTRI TET m T78 Q Q 0 DO RY BY NC VPP NC WP NC 10 20 79 N gt 5 P13 SCKO P14 TXDO P15 RXDO 70 29LV400B C62 BAUD1 BAUD2 10 100 RP9 100 3V 3V Reset Point 2
23. the display e NPB 40 status via the display and audio function Printed reports via the IrDA Infrared Data Association and external printer Display readability in dark environments via the display backlight Operating voltages for the user interface circuits Operating voltage monitoring NPB 40 79 Technical Discussion 80 Keypad The user interface PCB keypad contains seven push buttons These buttons allow the user to setup and control of the NPB 40 The buttons are 1 Alarm Silence 5 Backlight 2 Down Arrow 6 Up Arrow 3 Data 7 Power 4 Menu The signals from the buttons pass directly through the SpO2 and are applied to the user interface PCB CPU The Power button signal is applied to the SpO2 power supply turning the NPB 40 on or off Backlight The backlight illuminates the display for better viewing CPU and Flash The CPU controls all functions and timing for the NPB 40 The CPU communicates with the SpO PCB patient interface The patient interface signal are sent to the CPU for processing The CPU sends signals to the patient sensor via the patient interface for controlling the sensor light levels Real Time Clock Audio The real time clock and non volatile random access memory RAM chip maintain time and date used in the NPB 40 These circuits utilize a gold electrolytic super capacitor for power when the NPB 40 is turned off The audio circuit drives a t
24. 0 100 Technical Discussion 5VRDIG A R23 T177 698K Q 5VRDIG A C105 0 1uF R50 au 301K T176 Q gt 033 SA T178 L10 1M 2 1 3 SPO2 TXD 2506033017Y0 he MAX9100 12VR T181 7 A B C107 1uE lt VBATTERY2 5VRDIG 108 T T182 J2 4 7U 0 1uF HEADER 12 R110 49 9K T181 DOWN_ARROW 2 MENU R97 ARROW M 45K WR MEMORY BACKLIGHT T180 845 KEYPD3 WRITE 2 BACKLIGHT 0 KEYPD2 L11 MZ BAT54A E 31 750 3 gt 3 SEEE 5VRDIG 2 PWR_ON SE 8 PWR OFF 2 1 2 SPO2_RXD M 2KEYPDI OW 4 gt VON2 3 2506033017Y0 81 4 115 109 112 Sur 100K 3 VCHK eu M 100pF R111 sid R85 75 0K 698 1141 exi lt 2 0 J10 J7 J8 5VRDIG N al a A J5 0 1 Engineering Mode T183 301K 1 Mfg Test Q al it 112 E 1M 2 gt 4 Vv 2506033017Y0 aE 2 RSTN MAX9100 V d T185 T187 T189 T191 T190 KEYPD3 WRITE TO MEMORY KEYPD4 REYPD Down ARROW 3 KEYPD6 1 MENU 4 KEYPD5 UP ARROW 6 2 KEYRDI 5 BACKLIGHT KEYPD2 8 8 27 5 2 Schematic Diagram sheet 1 of 7 83 Technical Discussion This Page Intentionally Blank 84 Technical Discussion T164 T165 5 R109 9 5 Ev vi B1 2 3 2 2 3 VON 1 3 1812 R93 C104 TVS1 IRLML6401 R102 1K C101 IRLML6401 4 70 221K SMCJ7 0C 4 47P BAT_NEG
25. 3 Pulse Oximetry Functional Tests 24 INTOGUCUON MTM 24 Test Setup 25 icti 26 Test 42 SPO i 27 Test 3 Modulation Level 28 Test 4 Light Level zu oer eter emite 29 Safety TES S 24 seas asec 31 Troubleshooting INTROGUGCUON 33 How To Use This Section 33 Who Should Perform Repairs 33 40 Contents Troubleshooting Guide sss enne 33 Error C deS e 37 Disassembly Guide Ac m TM 43 c a Em 43 TOOR REGUE 43 Replacement Level Supported 43 Prior to Disassembly 43 Separating the Front and Back 44 CPU or Display PCB Replacement 46 Front Case Assembly Replacement 2 49 Rear Case Assembly 52 Battery Compartment Door Replacement 54 Gade 2 rm 55 010467 Em 55 Obtaining Replacement 55 Parts List and ACCOSSONOS
26. 780V 0 078V P26 NCS2 P27 NCS3 TDO L Technical Discussion U24 IS HARDWARE COMPATABLE WITH 2MBIT TO 16MBIT BOOT BLOCK FLASH FROM AMD ATMEL INTEL MICRON SHARP AND STM 024 must be 120nS or faster Ce R43 NRD NOE 178K NWRO NWE 93 5 dle NWR1 NUB R44 D NWAIT 023 100K NY 5V Reset Trip Point D R72 4 599V 0 120V D NRST Ts 15 0K D NWDOVF R73 D MCLKI BAT54SWT1 30 9K 7 D P25 MCLKO gt 50 LTC1728 5 2 T82 pos Q Stour TET zii amp RST L5V 1 7 NZ 2 4 43V GND VCC A B 32 000MHZ 1 TDI JTAG TEST PORT C61 2 3 NOTPOPULATED 0 01U d 4 DURING Resistors are 1 1 16W unless otherwise noted Vv 5 PRODUCTION R Packs are 5 1 32W unless otherwise noted 6 7 S Figure 30 SpO2 Schematic Diagram Sheet 4 of 7 NPB 40 89 Technical Discussion This Page Intentionally Blank 90 5 R4 1 00M 2 5 5 R6 010 40530 A 140K 6 PIC_RB2 gt 6 PIC YH AD820S C24 C25 10U 0 01U 10V t 5 C46 013 100 10V T46 O gt gt PIC_RCO 6 LMC7211BIM5 2 40 MAX970Q 11 M5 47K R10 gt gt PIC_RB5 6 24 9K 5 MAX970Q 5 A gt gt PIC_RB46 32 T21 T28 U1D O a B R15 024 R17 MAX970Q 24 9K 49 9K 42 5 470 2 5 A T25 T27 819 q R21 R22 12 2 2 5 100K 24 9K 1 TLC2262PW T125 42 5 C12 3 C73 Q
27. 84 M 2 OXIMAX NPB 40 Handheld Pulse Oximeter Service Manual Nellcor Puritan Bennett Inc is an affiliate of Tyco Healthcare Oxiband Durasensor OxiCliq Dura Y MAX FAST and are trademarks of Nellcor Puritan Bennett Inc This ISM device complies with Canadian ICES 001 Cet appareil ISM est conforme la norme NMB 001 Canada To obtain information about a warranty if any contact Nellcor s Technical Services Department or your local representative Purchase of this instrument confers no express or implied license under any Nellcor Puritan Bennett patent to use the instrument with any sensor that is not manufactured or licensed by Nellcor Puritan Bennett Covered by one or more of the following U S Patents and foreign equivalents 4 653 498 4 802 486 4 869 254 4 928 692 4 934 372 5 078 136 5 351 685 5 485 847 5 533 507 5 577 500 5 803 910 5 853 364 5 865 736 6 083 172 6 463 310 6 708 049 and Re 35 122 Contents tea iv E d EO di V oot ard ze dob drea dea qm EU EXER d oae V cede a o do ded 1 WANING S T 1 CAUTIONS 2 NOTES 2 Manual OVerviGW ta a x 2 Descriptio
28. A OXIMAX oxygen sensor MAX A Safety Analyzer Must meet current AAMI ESI 1993 amp IEC 60601 1 1998 specifications Extension cable DEC 4 Stopwatch Manual or electronic Nellcor model SRC MAX Tester Provides testing for compatible monitors Performance Tests The power up performance test verifies that the NPB 40 is ready for patient monitoring Power On Self Test NPB 40 Discussion Before using the NPB 40 you must verify that the NPB 40 is working properly and is safe to use Proper working conditions are verified each time the NPB 40 is turned on as described in the following procedure The verification procedure POST takes 7 to 13 seconds to complete Caution If any indicator or display element does not light when the NPB 40 is turned on do not use the NPB 40 Instead contact qualified service personnel your local Nellcor representative or Nellcor s Technical Services Department Note Physiological conditions medical procedures or external agents that may interfere with the NPB 40 s ability to detect and show measurements include dysfunctional hemoglobin arterial dyes low perfusion dark Performance Verification pigment and externally applied coloring agents such as nail polish dye or pigmented cream Note The NPB 40 automatically starts the Power On Self Test POST which tests the NPB 40 circuitry and functions Caution During POST immediately after power up con
29. CB M Battery compartment door Note Some spare parts have business reply card attached Please fill out and return the business reply card disassembling and reassembling the NPB 40 and when handling any 0 Caution Observe ESD electrostatic discharge precautions when components of the NPB 40 Tools Required The tools required to disassemble and reassemble the NPB 40 are Number one medium Phillips screwdriver Torque driver four inch pounds 10 cm kg Replacement Level Supported The replacement level supported for the NPB 40 is to the printed circuit board PCB and major subassembly level When the problem has been isolated to a suspected PCB follow the procedures in Disassembly Guide on page 43 to replace the PCB with a known good PCB Check to see if the trouble symptom disappears and that the NPB 40 passes all performance tests If the trouble symptom persists swap back the replacement PCB with the suspected malfunctioning PCB the original PCB that was installed when you started troubleshooting and continue troubleshooting Prior to Disassembly The NPB 40 the batteries must be removed prior to disassembly Perform the following procedure to remove the batteries 1 Press the Power button to turn the NPB 40 off NPB 40 43 Disassembly Guide 2 Remove the battery cover pull the battery cover latch downward toward the bottom of the NPB 40 case and lift the battery cover See Figure 4 item 1
30. CB or Display PCB Replacement on page 46 The Display PCB is defective Replace the Display PCB if any damage is found See CPU PCB or Display PCB Replacement on page 46 The speaker does not sound for pulse rat e or alarms The speaker is turned off Turn the NPB 40 off then on The holes for the speaker on the back of the NPB 40 are blocked Clear the holes for the speaker on the back of the NPB 40 The external output port on the CPU PCB has failed Replace the CPU PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 The speaker on the Display PCB has failed Replace the Display PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 Pulse rate and SpO value is not shown and the NPB 40 is turned on The SpO sensor is not connected properly Connect the SpO2 sensor to the NPB 40 Connect the SpO2 sensor to the patient See the sensor Directions for Use The SpO sensor has failed Replace the SpO2 sensor with known good sensor The Display PCB is defective Replace the Display PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 35 Troubleshooting 36 Table 3 Troubleshooting Guide Continued Condition Recommended Actione The CPU is defective Replace the CPU PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 The display b
31. F Altitude 390 m to 5 574 m 1 280 ft to 18 288 ft Atmospheric Pressure 50 kPa to 106 kPa 14 7 in Hg to 31 3 in Hg Relative Humidity 15 to 95 non condensing Physical Characteristics Weight Specifications 0 62 Ibs 0 28 kg Dimensions 2 875 in x 6 25 in x 1 375 in 7 3 cm x 15 9 cm x 3 5 cm Compliance Item Compliant With Equipment classification Safety Standards EN 60601 1 1990 1 A2 EN 60601 1 2 2001 UL 60601 1 CAN CSA C22 2 No 601 1 Type of protection Internally powered equipment on battery power Degree of protection Type BF Applied part Mode of operation Continuous Front panel and case labeling IEC 60878 EN 980 ISO 7000 EN 60417 1 EN 60417 2 Button spacing ISO 7250 Year of manufacture symbol EN 980 Operation during physical shock IEC 60068 2 27 at 100 g Alarm requirements EN 60601 1 8 Pulse oximeters EN 865 Operation during vibration IEC 60068 2 6 and IEC 60068 2 34 Radiated and conducted emissions EN 55011 Group 1 Class B Manufacturer s Declaration NPB 40 specified may result in increased emission and or create invalid readings of WARNING The use of accessories sensors and cables other than those the NPB 40 69 Specifications 70 The NPB 40 is intended for use in an electromagnetic environment in which radiated RF disturbances
32. NZ 5 5 0 10 470P R25 A 100 6 PIC_RD6 6 PIC_RD7 6 PIC_RB3 2 MAX4053Q l CEE ER EE FEE 15 0K MAX4053Q LED_IDRV6 2 5 R29 150 T29 R34 249K 2 5 T17 5 18 0 0220 4 R7 T75 2 5 U25A LT1013S R8 49 9K MAX4066 S WY PIC RAO 30 1K 42 5 A R1 220P 95 3K Or23 R2 Q RP25 47K 49 9K 5 C5 C6 0 0470 0 0470 KPIC_RA1 6 2 5 2 5 A C23 20 78 499 40 T30 44 R28 lt PIC_RE1 6 49 9 47 35 C21 C20 x 49 9K WY 0 047U 0 047U U25B LT1013S T126 Technical Discussion 113 T14 c2 T12 Q Q Q 0 01U 0 01U R3 5 A 5ANALOG U3A x A 100K U3B al 1 6 U4A TLC2262PW RB7 6 2 5 TLC3702C A NA C14 34 T35 C16 T36 Q Q 0 010 0 010 5 R33 A 5ANALOG U11A U11B 100 6 U4B TLC2262PW ps RB6 6 42 5 gt TLC3702C A VY Notes Resistors are 1 1 16W unless otherwise noted R Packs are 5 1 32W unless otherwise noted Figure 31 SpO2 PCB Schematic Diagram Sheet 5 of 7 91 Technical Discussion This Page Intentionally Blank 92 RP24 47K 5ANALOG MBT3906DW SENSOR DISCONNECT 7 MBT3904DW RA2 Technical Discission gt 5ANALOG BAT54SWT1 NY gt gt PIC_RED_IR5V7 PIC_RA1 5 PIC RAO 5 T53 PIC_RB1 5 PIC
33. Pass Volume level Fixed at 45 dB A at one meter Pitch 30 Hz 600 Hz On pulse width 1000 msec 20 msec Off Interval 20 msec 10 msec Number of pulses in burst 1 Repetition Pause N A 2 sec Priority 3 Invalid Key Press Volume level Fixed at 45 dB A at one meter Pitch 30 Hz 200 Hz On pulse width 50 msec 20 msec Off Interval 20 msec 10 msec Number of pulses in burst 1 Repetition Pause N A 2 sec Priority 4 Audible Indicators Continued Specifications audible Parameter Value Indicator Confirmation Volume level Fixed at 45 dB A at one meter Pitch 30 Hz 700 Hz On pulse width 130 msec 20 msec Off Interval 20 msec 130 msec Number of pulses in burst Repetition Pause N A 2 sec Priority 5 Valid Key Press Volume level Fixed at 45 dB A at one meter Pitch 30 Hz 800 Hz On pulse width 10 msec 20 msec Off Interval 20 msec 10 msec Number of pulses in burst 1 Repetition Pause N A 2 sec Priority 6 Pulse Beep Volume level Adjustable 42 to 52 Alarm Silence Reminder NPB 40 dB A at one meter Pitch 30 Hz 1500 Hz On pulse width 50 msec 20 msec Off Interval 20 msec 10 msec Number of pulses in burst 1 Repetition Pause N A 2 sec Priority 7 Volume level Adjustable 42 to 52 dB A at one meter
34. TIOB2 P29 A21 CS6 0 1uF P30 A22 CS5 P31 A23 CS4 3 PWR IRDAN P9 IRQO A 3 LCD_CE1 Ra P10 IRQ1 P11 IRQ2 20 3 LCD GLK P12 FIQ NC7SZ125 S0T23 3 LED DAT 3 BZ_SDAT P13 SCK0 3 TR_TX P14 TXDO lt 7 1SQW_OUTY 3 IR RX P15 RXDO V P20 SCK1 P21 TDX1 NTRI P22 RXD1 P16 P17 P18 P19 R52 10 MCLKII S OUT EN P25 MCLKq 3 KKEYPD1 1 GND VCC 11 0592 2 T10 1 UC RSTN gt C43 0 1uF JTAG TEST PORT NOT POPULATED DURING PRODUCTION For Pins 10A and 11A are pads only CONN ASY DSUB P P 9 1 VCHK_OK amp Mfg_Test gt Technical Discussion 1Meg x 16 FLASH PROGRAM MEMORY U18 AM29LV400 S048 1 m DO A 4 D V V 9 gt 3V0 12 0 VBATTERY A RP10 C45 C46 0 1uF 0 1uF 30K 44 E T17 T19 K 5 2 RSTN AAA UK 1 n 64 21 C47 C48 4741 0 1uF Y Figure 35 User Interface PCB Schematic Diagram Sheet 2 of 3 99 Technical Discussion This Page Intentionally Blank 100 40 Technical Discussion ZN 711113 gt sue 0 012 NJU6432BF 6b1 H LCD1 COM2 Q2 Ht _2 2 IRLML6401 3 0 sel SEG A MUX04 38 35 C53 SEG HS muxos 6 mosa 7101 47uF gt 54 10 0 1uF 8 MU
35. UI board communication 533 1 2 Replace SpO2 board Unrecoverable error with SpO2 2 Replace UI board communication 534 1 2 Replace SpO2 board Unrecoverable error with SpO2 2 Replace UI board communication 535 1 2 Replace SpO2 board Unrecoverable error with SpO2 2 Replace UI board communication 536 X Replace UI board Flash memory failed CRC check 537 X Replace UI board Fatal system error 538 X Set the NPB 40 time and date Real time clock value bad 539 1 2 1 Restart NPB 40 Erroneous key press detected at start 2 Replace membrane switch pad 540 X Replace UI board Fatal system error reading memory 541 X Return NPB 40 for repair Fatal software error 542 1 2 1 Replace UI board RAM corruption detected during 2 Return NPB 40 for repair background check 40 Scope of Action Troubleshooting Table 4 Error Codes Continued Code amp Action Explanation a Q 22 24 543 X Set time and date Invalid time Cannot snapshot 544 X Replace UI board Invalid register value 999 X Replace UI board Watchdog protection activated 41 Troubleshooting This Page Intentionally Blank 42 Disassembly Guide Introduction The NPB 40 can be disassembled into to all major component parts including Front case with front panel keypad e Rear bottom e Display CPU P
36. Volts DC each Sensors Wavelength The wavelength range of the light emitted are near 660 nm and 890 nm Sensor Power Dissipation Sensor Dissipation MAX N 52 5 mW OxIMAx MAX I 52 5 mW 52 5 mW 52 5 mW OxiMAX MAX AL 52 5 mW MAX R 52 5 mW OXIMAX Durasensor DS 100A 52 5 mW OXIMAX OxiCliq P 52 5 mW OxiCliq 52 5 mW OxiCliq I 52 5 mW OxiCliq 52 5 mW Dura Y D YS 52 5 mW MAX FAST 52 5 mW Softcare SC PR 52 5 mW OXIMAX Softcare SC NEO 52 5 mW OXIMAX Softcare SC A 52 5 mW OXIMAX Oxiband OXI A N 52 5 mW 67 Specifications Environmental Conditions 68 Operation Temperature 5 C to 40 C 41 F to 104 F Altitude 390 m to 3 012 m 1 254 ft to 9 882 ft Atmospheric Pressure 70 kPa to 106 kPa 20 6 in Hg to 31 3 in Hg Relative Humidity 15 to 95 non condensing Transport and Storage not in shipping container Temperature 20 C to 60 C 4 F to 140 F Altitude 390 m to 5 574 m 1 280 ft to 18 288 ft Atmospheric Pressure 50 kPa to 106 kPa 14 7 in Hg to 31 3 in Hg Relative Humidity 15 to 95 non condensing Transport and Storage in shipping container Temperature 20 C to 70 C 4 F to 158
37. X08 42 R78 SESS 9 1114 294 SEG10 4 2 PWR_IRDAN gt 15 48 13 seci MUX T8 48 3 MUx16 502 LEB BRS a M os 10 A DN seci jg 2 1 35614 8 52 221 BS moko sa 4 SEG22 53 7 625 50 07525 57 E A 1 30 f R57 C55 em 10 0 1uF SEG 54 T27 MUX30 64 54 R59 C57 SEO _ B S T30 71 5K 470pF 1 37 38 2 IH BRD L 3 a 2 IR_RX H V 2 IR_TX X SD 16 4 LCD CONN R58 100k FR 45 T41 T40 9 38 136 T37 5 Un SEG44 Fe 5 4232 22 36864MHz 45 C58 C59 V sEG4 9 22pF 22pF lt gt 0 SEG51 gt gt LCD1_TEST1 112 comi e4 gt LCD1_COM1 1 HES 2 T34 12 0 131 J9 Backli acklight 016 T 94 TLE2021 800R Audio Transducer 2 PWR BZN 119 859138 R79 10K 5 2 BZ_FRQY 2 BK LIGHTS 55138 PES C70 C71 22 p 2 BZ SCLK MCP41050 I SN C64 Figure 36 User Interface PCB DO NOT Schematic Diagram INSTALL Sheet 3 of 3 101 Technical Discussion This Page Intentionally Blank 102 Index A accessories on internet 9 accuracy and motion tolerance 63 alarm manage
38. acklight does not come on when the Backlight button is pressed The Backlight bottom on the front panel keypad is defective Caution Unlock J3 before attempting to remove flex circuit conductor Open the NPB 40 disconnect the front case from J3 on the CPU PCB and connect an ohmmeter lead to the flex circuit conductor for J3 pin 3 and individually connect the other ohmmeter lead to each conductor for the buttons Refer to the front panel schematic diagram Observe a short when the button is pressed and an open when the button is not pressed If incorrect replace the front case See Front Case Assembly Replacement on page 49 If correct replace the CPU PCB See CPU PCB or Display PCB Replacement on page 46 Flex circuit between the front panel and the CPU PCB is disconnected Inspect the flex circuit and reconnect if the flex circuit is loose See Separating the Front and Back Cases on page 44 A CPU PCB Component has failed CPU PC has failed The Backlight LEDs on the Display PCB have failed Inspect the CPU PCB components and circuit board for cracking burning or damage and replace the CPU PCB if any are found See CPU PCB or Display PCB Replacement on page 46 Replace the CPU PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 Replace the Display PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 The NPB 40 shuts off when the Ba
39. arious system faults 519 Return NPB 40 for repair Unrecoverable software error 39 Troubleshooting 40 Error Scope of Action Table 4 Error Codes Continued Code E b Action Explanation 2 Q Q Q 24 24 520 X Replace UI board Unrecoverable error verify real time clock 521 X Replace batteries Battery power is critically low 522 X Replace batteries System power levels unacceptable for continued operation 523 1 2 3 Restart the NPB 40 NVRAM failed consistency check 2 Set the time and date 3 Replace UI board 524 X Replace UI board NVRAM failed read after write verification 525 X X Restart replace UI board Time base discrepancy writing error entry 526 1 2 Replace SpO2 board Fatal error for SpO2 communication 2 Replace UI board 527 1 2 1 Replace SpO2 board Communication failure with SpO2 2 Replace UI board board 528 1 2 l Replace UI board Fatal error creating parser 2 Return NPB 40 for repair 529 1 2 l Replace UI board Fatal error creating parser 2 Return NPB 40 for repair 530 1 2 Replace SpO2 board Unrecoverable error with SpO2 2 Replace UI board communication 531 1 2 Replace SpO2 board Unrecoverable error with SpO2 2 Replace UI board communication 532 1 2 Replace SpO2 board Unrecoverable error with SpO2 2 Replace
40. ately corrected for the effects of variables that shift the relationship between PO2 and pH temperature the partial pressure of carbon dioxide 2 3 DPG and fetal hemoglobin See Figure 25 1 pH 100 Temperature 2 2 7 2 3 DPG 2 1 Fetal Hb Pian 2 5 pH 2 t Temperature 38 1 PCO2 5 1 2 3 DPG 6 o 50 100 mmHg Figure 25 Oxyhemoglobin Dissociation Curve SatSeconds Alarm Management 76 The NPB 40 utilizes Nellcor SatSeconds alarm management technique SatSeconds is a function of the software within the NPB 40 With the SatSeconds technique upper and lower alarm limits are set in the same way as traditional alarm management The clinician also sets a SatSeconds limit that allows monitoring of SpO2z below the selected lower alarm limit for a period of time before an audible alarm sounds Refer to the NPB 40 Operator s manual for managing SatSeconds Technical Discussion Reads Through Motion The NPB 40 takes advantage of increased micro processing power with advanced mathematical algorithms advanced signal processing allows the NPB 40 to read through challenging motion conditions to deliver accurate saturation and pulse rate values For a definition of motion as applicable to the NPB 40 contact Nellcor s Technical Services Department OxiMax Technology The NPB 40 is designed to use Nellcor brand OxiMAx sensors containing OxiMAx technolo
41. atteries orientated as shown in Figure 1 4 Replace the battery access door 1 Battery compartment latch Figure 1 Installing Batteries WARNING Explosion hazard Do not use the NPB 40 in the presence of flammable anesthetics mixed with air oxygen or nitrous oxide WARNING To ensure patient safety do not place the in any position that might cause it to fall on the patient gt gt 12 40 gt Routine Maintenance WARNING As with all medical equipment carefully route patient cabling to reduce the possibility of patient entanglement or strangulation WARNING To ensure accurate performance and prevent device failure do not expose the NPB 40 to extreme moisture such as rain Routine Maintenance This Page Intentionally Blank 14 Performance Verification Introduction This section discusses the tests used to verify performance following repairs or during routine maintenance All tests can be performed without removing the NPB 40 cover All tests except the battery charge and battery performance tests must be performed as the last operation before the NPB 40 is returned to the user If the NPB 40 fails to perform as specified in any test repairs must be made to correct the problem before the NPB 40 is returned to the user Equipment Needed Equipment Description Digital Multimeter DMM Fluke Model 87 or equivalent Durasensor oxygen sensor DS 100
42. ayed SpOz2 Q min 9 Press the Alarm Silence button The Alarm Silenced indicator is not displayed 5 74 o 10 Press the Backlight button The backlight turns on 11 Press the Backlight button The backlight turns off Operational Setup The operational setup procedure sets the time and date into the NPB 40 Refer to the NPB 40 Operator s manual for individual parameter settings The NPB 40 returns to the factory default settings when it is powered on and individual parameter settings need to be set at that time NPB 40 19 Performance Verification Setting the Time and Date 20 Discussion WARNING The sensor uses the date and time provided by the NPB 40 handheld pulse oximeter when the sensor event record is recorded by the sensor The accuracy of the date time is dependent on the date time already set in and provided by the NPB 40 Note Allowing NPB 40 to time out 30 seconds sets the currently shown parameter the NPB 40 display returns to the normal operating display Procedure With the NPB 40 in the normal monitoring mode 1 Press the Power button to turn the NPB 40 Off 3 Press the Menu button during the POST operation until the set hours window is shown with the hours indication 13 flashing 2 Press the Power button to turn the NPB 40 On 2 Ku 4 Press the Up Arrow button or the Down Arrow button until the desired hours are s
43. board SpO2 front end reports spurious interrupt 49 X Replace SpO2 board SpO2 front end reports internal buffer overflow 50 X Replace SpO2 board SpO2 front end reports intermittent error 51 X Replace SpO2 board SpO2 front end reports digital communication error 53 X Replace SpO2 board SpO2 front end data not received 256 X Replace SpO2 board SpO2 back end reports beginning of packet missing 257 X Replace SpO2 board SpO2 back end reports packet start ID SID missing 258 X Replace SpO2 board SpO2 back end reports packet length error 259 X Replace SpO2 board SpO2 back end reports message length error 260 X Replace SpO2 board SpO2 back end reports packet contains unsupported key 261 X Replace SpO2 board SpO2 back end reports packet CRC error 40 Scope of Action Troubleshooting Table 4 Error Codes Continued Code E amp Action Explanation Q 24 24 262 Replace SpO2 board SpO2 back end reports end of packet missing 263 X Replace SpO2 board SpO2 back end reports packet contains unidentified key 264 X Replace SpO2 board SpO2 back end reports corrupted variable 265 X Replace SpO2 board SpO2 back end reports memory overflow 266 X Replace SpO2 board SpO2 back end reports bad pointer 267 X Replace SpO2 board SpO2 back end reports parameter value out of range 268 X R
44. cator 12 BPM Upper Alarm Limit indicator 13 BPM Limit Changed indicator 14 Sensor Off Patient indicator 15 Sensor Disconnected indicator 16 SpO2 Limit Changed indicator 40 Introduction 2 74 gt Qa ET am X 25 23 21 19 17 26 24 22 20 18 17 BPM Lower Alarm Limit indicator 18 Print indicator 19 Motion indicator 20 Pulse Beep Tone Volume Adjust indicator 2 Pulse Search indicator 22 Alarm Volume Adjust indicator 23 Data In Sensor indicator 24 Data indicator 25 Low Battery indicator 26 Alarm Silenced indicator Introduction Function Menu Aq Em 4 33 32 31 30 29 28 27 27 Power button 28 Up Arrow button 29 Backlight button 30 Menu button 31 Data record print button 32 Down Arrow button 33 Alarm Silence button Pressing the Menu button repeatedly during normal operation sequentially shows seven parameter setting displays one for each button activation and then returns to the default monitoring display Settable parameters include high and low SpO limits high and low bpm limits alarm volume pulse beep volume and data printing Pressing the Menu button during start up Power On Self Test POST test accesses the Time Date setting menu Repeated activations
45. chassis WARNING The LCD panel contains toxic chemicals Do not ingest chemicals from a broken LCD panel WARNING The use of accessories sensors and cables other than those specified may result in increased emission and or decreased immunity of the NPB 40 WARNING Do not silence the NPB 40 audible alarm or decrease its volume if patient safety could be compromised Introduction Cautions 9 99 Notes Cautions are identified the CAUTION symbol shown above Cautions alert the user to exercise care necessary for the safe and effective use of the NPB 40 Caution Observe ESD electrostatic discharge precautions when working within the unit Caution Observe ESD electrostatic discharge precautions when disassembling and reassembling the NPB 40 and when handling any of the components of the NPB 40 Caution When reassembling the NPB 40 tighten the screws that hold the cases together to a maximum of ten inch pounds Over tightening could strip out the screw holes in the front case rendering it unusable Caution When installing the Power Supply or the User Interface PCB tighten the seven screws to a maximum of four inch pounds Over tightening could strip out the screw holes in the bottom case rendering it unusable Notes are identified by the Note symbol shown above Notes provide useful helpful information Manual Overview A This manual contains information for service personnel w
46. cklight button is pressed The batteries at or near a voltage too low for the NPB 40 to operate Install new batteries See the NPB 40 Operator s manual The printer does not print The printer and the NPB 40 are not properly aligned Align the printer and the NPB 40 See the NPB40 Operator s manual The printer is turned off Turn the printer on See the printer documentation The Data bottom on the front panel keypad 15 defective Caution Unlock J3 before attempting to remove flex circuit conductor Open the NPB 40 disconnect the front case from J3 on the CPU PCB and connect an ohmmeter lead to the flex circuit conductor for J3 pin 3 and individually connect the other ohmmeter lead to each conductor for the buttons Refer to the front panel schematic diagram Observe a short when the button is pressed and an open when the button is not pressed If incorrect replace the front case See Front Case Assembly Replacement on page 49 If correct replace the CPU PCB See CPU PCB or Display PCB Replacement on page 46 Troubleshooting Table 3 Troubleshooting Guide Continued Condition Recommended Actione Flex circuit between the front panel and the CPU PCB is disconnected Inspect the flex circuit and reconnect if the flex circuit is loose See Separating the Front and Back Cases on page 44 A CPU PCB Component has failed Inspect the CPU PCB components and circu
47. d on the Internet at http mallinckrodt com respiratory resp Serv_Supp Apartweb main PartAcceMenu html Parts List and Accessories Table 5 Parts and Accessories List Figure 23 ino D Reference escription Spare Parts 5 Battery cover Battery alkaline 1 5V type AA 4 Bottom enclosure Buttons set of 7 membrane switch panel LCD assembly Product data label Quick guide label Screw 4 X 16 inch Screw PH 4 X 3 16 inch 3 SpO2 PCB 1 Top enclosure 2 User interface PCB Accessories Battery alkaline type AA Duracel Gold Top Boot protective silicone yellow Case carry fabric black with shoulder strap CD operator and service manuals NPB 40 55 Spare Parts 56 Figure 23 Reference Table 5 Parts and Accessories List Continued Description DEC 4 sensor extension cable Home Use Guide English Jacket water resistant clear plastic Operator s manual Chinese Operator s manual Czechoslovakian Operator s manual Danish Operator s manual Dutch Operator s manual English Operator s manual Finnish Operator s manual French Operator s manual German Operator s manual Greek Operator s manual Hungarian Operator s manual Italian Operator s manual Japanese Operator s manual Norwegian Operator s manual P
48. d with a ten percent solution of chlorine bleach in tap water Before attempting to clean an SpO2 OxiMAx sensor read the Directions For Use enclosed with the OxiMAx sensor Each sensor model has cleaning instructions specific to that sensor Periodic Safety Checks The NPB 40 requires no calibration The following checks should be performed at least every 24 months by a qualified service technician 1 Inspect the equipment for mechanical and functional damage 2 Inspect safety labels for legibility If the labels are damaged contact Nellcor s Technical Services Department 1 800 635 5267 or your local Nellcor representative Functional Checks If the NPB 40 has been visibly damaged or subjected to mechanical shock for example if dropped immediately perform the performance tests See Performance Tests on page 15 The following check should be performed at least every two years by a qualified service technician e Perform the electrical safety tests detailed in Safety Tests on page 31 If the unit fails these electrical safety tests refer to Troubleshooting on page 33 NPB 40 11 Routine Maintenance Battery Installation batteries 1 Press Power to turn the NPB 40 off 2 Pull the battery compartment latch downward toward the bottom of the NPB 40 and remove the battery access door See Figure 1 0 Caution NPB 40 does not operate with dead batteries Install new 3 Install four AA size b
49. ecified below The customer or user of the NPB 40 should assure that it is used in such an environment Electromagnetic Emission Test Compliance Environment Guidance RF emissions Group 1 The NPB 40 uses RF energy only for its CISPR 11 internal function Therefore the RF emissions are very low and not likely to cause interference in nearby electronic equipment RF emissions Class B The NPB 40 is suitable for use in CISPR 11 establishments including diagnostic establishments and those directly connected to the public low voltage power supply network that supplies buildings used for domestic purposes Specifications 71 Specifications Table 7 Electromagnetic Immunity The NPB 40 is intended for use in the electromagnetic environment specified below The customer or user of the NPB 40 should assure that it is used in such an environment Immunity Test IEC 60601 Compliance Test Level Level Electrostatic 6 contact Complies Discharge ESD 8 kV air IEC 61000 4 2 Electrical fast 2 power Complies transient burst supply lines IEC 61000 4 4 1kV for input output lines Power 3 A m Complies Frequency 50 60 Hz magnetic field Conducted RF 3 Vrms 3 Vrms IEC 61000 4 6 150 kHz to 80 MHz Radiated RF 3 3 Vrms IEC 61000 4 3 80 MHz to 2 5 GHz Recommended Separation Distance Electromagnetic Environment Guidance Floors should be wood concrete or cera
50. eplace SpO2 board SpO2 back end reports reset detected 269 X Replace SpO2 board SpO2 back end reports unexpected value 270 X Replace SpO2 board SpO2 back end reports time out 271 X Replace SpO2 board SpO2 back end reports not ready not initialized 272 X Replace SpO2 board SpO2 back end reports double fault 273 1 2 3 Restart the NPB 40 SpO2 back end reports date out of 2 Set the time and date range error 3 Replace UI board 274 X Return NPB 40 for SpO2 back end reports incompatible reprogramming software version 275 X Check replace sensor SpO2 back end reports incorrect extension cable registration number 276 X Replace with OxiMax sensor SpO2 back end reports sensor read extension cable failure 2T X Check replace sensor SpO2 back end reports sensor extension cable signature verification fails 280 X Check replace sensor SpO2 back end reports does not extension cable support feature required by sensor 281 X Check replace sensor SpO2 back end reports overflow extension cable underflow 282 X Check replace sensor SpO2 back end reports sensor extension cable activation failure 512 X Replace UI board Communication failure with real time clock 513 X Replace UI board Real time clock oscillator control problem 514 X Replace UI board Real time clock failed timing test 515 X Replace UI board LCD failed feedback test 516 X Replace UI board LCD failed feedback test 518 X Return NPB 40 for repair V
51. evel modulation Perform Test 1 on page 26 The pulse amplitue indicator should indicate low level modulation Perform Test 2 SpO2 on page 27 The pulse amplitue indicator should indicate low level modulation Test 4 Light Level Qu NPB 40 Press the SRC MAX LIGHT LEVEL selection button The SRC MAX LIGHT LEVEL amp LED lights 29 Performance Verification 30 2 The NPB 40 pulse blip bar initially increases in amplitude and then stabilize SpO2 Q min 3 The NPB 40 displays 75 5 gt test pass criteria is 73 to 77 SpO2 inclusive displays 60 bpm test pass criteria is 57 to 63 bpm inclusive alarms e pulse amplitue indicator displays high level modulation 4 Perform Test 1 BPM on page 26 The pulse amplitue indicator should indicate high level modulation 5 Perform Test 2 SpO2 on page 27 The pulse amplitue indicator should indicate high level modulation 6 Press the SRC MAX LIGHT LEVEL selection button The SRC MAX LIGHT LEVEL LED lights 7 NPB 40 pulse blip bar decreases in amplitude 8 The NPB 40 e displays 75 8 2 e displays 60 bpm alarms Safety Tests NPB 40 Performance Verification e pulse amplitue indicator displays low level modulation 9 Perform Test 1 BPM on page 26 The pulse amplitue indicator should indicate low level modulation 10 Perform Test 2 SpO2 on page 27 The pulse amplitue indicator should indicate lo
52. firm that all display segments and icons are shown and the NPB 40 speaker sounds a one second tone When the NPB 40 is turned on the backlight remains on the display shows the following sequence in order as POST takes place Display graphics are shown for three seconds Display goes blank all display elements off for one second Version number of the software 1 shown as a three digit number in the right hand number field with leading zeros if the version number is less than 100 and two dashes in the left hand number field for three seconds Current time of day using a 24 hour clock format is shown for three seconds Successful completion of the POST is announced by a POST Pass tone A failed POST is announced by a high priority alarm tone Procedure 0 1 Turn on the NPB 40 by pressing the Power button 9 Note The backlight remains on during POST 2 All display numbers and icons are shown for three seconds The backlight is turned on 2 Q min Coa m am Aq 16 Performance Verification 3 The display goes blank for one second SpOz2 Q min o 4 The software version number is shown for three seconds The software version is identified by two dashes in the 5 2 area of the display The software version number is shown with leading zeros for software version numbers less than 100 SpO2 Q min nn UL 1
53. gy These OxiMAx sensors be identified by the deep blue color of their plug All OxiMAx compatible sensors contain a memory chip carrying information about the OxiMAx sensor which the NPB 40 needs for correct operation including the sensor s calibration data model type troubleshooting codes and error detection data This unique oximetry architecture enables several new features with the NPB 40 When OxiMAx compatible sensor is connected to the NPB 40 the NPB 40 first reads the information in the OxiMAx sensor memory chip checks it to make sure that there are no errors and then loads the data to begin monitoring As the NPB 40 reads the information it flashes the Data In Sensor icon This process takes a couple of seconds Once the reading process is complete the NPB 40 begins monitoring Pulse Oximeters containing OxiMAx technology including the NPB 40 use calibration data contained in the OxiMAx sensor in calculating the patient s SpO2 Block Diagram Theory NPB 40 This section provides an explanation of NPB 40 block diagram theory of operation Schematic diagrams and are provided at the end of this section 77 Technical Discussion The NPB 40 consists of two printed circuit boards PCB the user interface PCB and the SpO2 PCB The relationship between these two components and their interconnections is shown in the NPB 40 block diagram See Figure 26 SpO2 BOARD USER INTERFACE BOARD Batteries 4 X
54. he recommended actions discussed in this section to correct the If you encounter a problem that cannot be resolved through a visual inspection refer to Table 3 which provides troubleshooting support It is recommended that corrective actions be performed in the order presented For a symptom that is not listed in Table 3 contact the Nellcor Technical Services Department at 1 800 635 5267 or your local Nellcor representative NPB 40 33 Troubleshooting 34 If an error code is shown on the NPB 40 front panel display see Figure 3 turn the NPB 40 off wait ten seconds then turn the NPB 40 on This clears recoverable errors encountered by the NPB 40 If the error code still persists refer to Table 4 for the indicated failure SpO2 Q Er 103 Figure 3 Typical Error Code Display Once you have performed the recommended action reassemble the NPB 40 refer to Performance Verification on page 15 and conduct a performance verification before returning the NPB 40 to service If the symptom persists continue troubleshooting Table 3 Troubleshooting Guide Condition Recommended Actione The NPB 40 does not turn on when the Power button is pressed The Power button was not fully Fully press the Power button depressed The batteries are missing Open the battery compartment and if batteries are missing install new batteries Refer to the NPB 40 Operator s manual The batteries are installed
55. ho will service the Nellcor model OxiMAxNPB 40 handheld pulse oximeter herein referred to as the NPB 40 Only qualified service personnel should service this product Read the operator s manual carefully and thoroughly understand the operation of the NPB 40 WARNING Explosion hazard Do not use the NPB 40 in the presence of flammable anesthetics mixed with air oxygen or nitrous oxide Introduction Description of NPB 40 The NPB 40 handheld pulse oximeter herein referred to as the NPB 40 is indicated for non invasive spot check measurements of functional arterial oxygen saturation SpO and pulse rate of adult pediatric and neonatal patients It can be used in hospital emergency transport and mobile environments as well as in the home care environment Identification of Front Panel Buttons and Symbols NPB 40 Refer to the NPB 40 Operator s manual for a complete description of all buttons symbols controls displays and indicators 1 5 area of display 2 Measured 5 gt 3 Pulse beats per minute bpm area of display 4 Measured bpm Introduction 5 6789 101112 16 15 1413 5 96SpO2 Lower Alarm Limit indicator 6 SpO2 Upper Alarm Limit indicator 7 Pulse Amplitude indicator blip bar 8 Time colon time date field separator 9 Adjust Time mode indicator 10 Adjust Volume mode indicator 11 Set Limit mode indi
56. hown 40 Performance Verification 5 Press the Menu button to set the hours and show the minutes set display The minutes indication 45 flashes 2 Q minutes shown 7 Press the Menu button to set the minutes and show the day set display The day indication 29 flashes 6 Press the Up Arrow button or the Down Arrow button until the desired SpOz2 Q min 8 Press the Up Arrow button or the Down Arrow button until the desired day y is shown 21 Performance Verification 22 9 Press the Menu button to set the day and show the month set display The month indication 7 flashes SpO2 74 10 Press Up Arrow button or Down Arrow button until the desired month is shown 11 Press the Menu button to set the month and show the year set display The year indication 2004 flashes oo 5 Q a7 CU 50 0 0 12 Press the Up Arrow button or the Down Arrow button until the desired year is shown 13 Press the Menu button to set the year and return to normal operation Performance Verification General Operation The following test is an overall performance check of the system Operation with a Live Subject on page 23 Operation with a Live Subject Patient monitoring involves connecting the OxiMAx sensor to a live subject for a qualitative test 1 Sensor Port 1 Connect a Nel
57. incorrectly or Open the battery compartment and if batteries are not they are backwards installed correctly remove and reinstall the batteries Refer to the NPB 40 Operator s manual The batteries are at or near voltage too Install new batteries Refer to the NPB 40 Operator s low for the NPB 40 to operate manual The sensor is defective Replace the sensor remove flex circuit conductor The front panel keypad is defective Caution Unlock J3 before attempting to Open the NPB 40 disconnect the front case from J3 on the CPU PCB and connect an ohmmeter between the flex circuit conductor for J3 pin 5 and the conductor for J3 pin 3 Observe a short when the Power button is pressed and an open when not pressed If incorrect replace the front case See Front Case Assembly Replacement on page 49 If the Power button functions correctly replace CPU PCB See CPU PCB or Display PCB Replacement on page 46 Flex circuit between the front panel and Inspect the flex circuit and reconnect if the flex circuit is the CPU PCB is disconnected loose See Separating the Front and Back Cases on page 44 Table 3 Troub Condition Troubleshooting leshooting Guide Continued Recommended Actione A CPU PCB Component has failed Inspect the CPU PCB components and circuit board for cracking burning or damage and replace the CPU PCB if any are found See CPU PCB or Display PCB Replacement on page 46
58. it board for cracking burning or damage and replace the CPU PCB if any are found See CPU PCB or Display PCB Replacement on page 46 CPU PC has failed Replace the CPU PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 The printer batteries are at or near voltage too low to operate the printer Install new batteries in the printer See the printer documentation The Display PCB has failed Replace the Display PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 The CPU PCB has failed The printer is defective Replace the CPU PCB with a known good PCB See CPU PCB or Display PCB Replacement on page 46 Attempt to print using a known good NPB 40 If the printer still does not print troubleshoot the printer See the printer documentation Error Codes NPB 40 An error code is shown when the NPB 40 detects a non correctable failure Table 4 provides a list of error codes for the NPB 40 When one of the following errors occurs NPB 40 sounds a low priority alarm Measurements stop Er is shown in the SpO2 numeric display area Error code is shown in the right numeric display e Cycling the power should clear the shown error code Table 4 provides a list of error codes for the NPB 40 Table 4 Error Codes Scope of Action za 3 Action Explanation Q Q 24 24 1 X Replace SpO2
59. lcor Oxi Max MAX A oxygen OxiMAx sensor to the NPB 40 2 Clip the MAX A to the subject as recommended in the OxiMAx sensor s Directions For Use 3 Press the Power button to turn the NPB 40 on and verify that the NPB 40 is operating 4 The NPB 40 should stabilize on the subject s physiological signal in about 15 to 30 seconds Verify that the oxygen saturation and pulse rate values are reasonable for the subject 5 Press the Data button The NPB 40 records snap shot data 5 2 40 23 Performance Verification Pulse Oximetry Functional Tests These tests utilize the pulse oximetry functional tester Nellcor model SRC MAX to verify the performance of the NPB 40 See Figure 2 These tests should be done in sequence 1 23 4 9 8 7 6 1 NPB 40 Cable Connector 6 Modulation Select Button 2 RED LED Drive Indicator 7 SpO2 Select Button 3 Not Used For NPB 40 8 Light Level Selection Button 4 Not Used For NPB 40 9 Pulse Rate Selection Button 5 Battery Low Indicator 10 INFRARED LED Drive Indicator Figure 2 SRC MAX OxiMAx Oximetry Tester Introduction The SRC MAX functional tester allows qualified technicians to functionally test Nellcor OxiMAx technology based pulse oximeters OEM OxiMAx technology based monitors The technician must perform the test setup procedure before performing tests 1 through 4 The following is a brief description
60. light absorbed is translated into a measurement of functional oxygen saturation SpO2 Because a measurement of SpO is dependent upon light from the OxiMAx sensor excessive ambient light can interfere with this measurement Specific information about ambient conditions OxiMAx sensor application and patient conditions is contained throughout this manual Pulse oximetry is based on two principles that oxyhemoglobin and deoxyhemoglobin differ in their absorption of red and infrared light spectrophotometry and that the volume of arterial blood in tissue and hence light absorption by that blood changes during the pulse i e plethysmography A pulse oximeter determines SpO2 by passing red and infrared light into an arteriolar bed and measuring changes in light absorption during the pulsatile cycle Red and infrared low voltage light emitting diodes LED in the oximetry sensor serve as light sources a photo diode serves the photo detector Because oxyhemoglobin and deoxyhemoglobin differ in light absorption the amount of red and infrared light absorbed by blood is related to hemoglobin oxygen saturation To identify the oxygen saturation of arterial hemoglobin the pulse oximeter uses the pulsatile nature of arterial flow During systole a new pulse of arterial blood enters the vascular bed and blood volume and light absorption increase During diastole blood volume and light absorption reach their lowest poin
61. ll situations Electromagnetic propagation is affected by absorption and reflection from structures objects and people Field strength from fixed transmitters such as base stations for radio cellular cordless telephones and land mobile radios amateur radio AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy To assess the electromagnetic environment due to fixed RF transmitters an electromagnetic site survey should be considered If the measured field strength in which the NPB 40 is used exceeds the applicable RF compliance level above the NPB 40 should be observed to verify normal operation If abnormal performance is observed additional measures may be necessary such as reorienting or relocating the NPB 40 P Over the frequency range 150 kHz to 80 MHz field strength should be less than V V m NPB 40 73 Specifications This Page Intentionally Blank 74 Technical Discussion Oximetry Overview The NPB 40 uses pulse oximetry to measure functional oxygen saturation in the blood Pulse oximetry works by applying an sensor to a pulsating arteriolar vascular bed such as a finger or toe The sensor contains a dual light source and a photo detector Bone tissue pigmentation and venous vessels normally absorb a constant amount of light over time The arteriolar bed normally pulsates and absorbs variable amounts of light during the pulsations The ratio of
62. ment satseconds 76 alarm volume 7 arterial dyes 15 audible indicator 64 B battery compartment door replacement 54 battery installation 12 block diagram theory 77 bmp high limit 7 bmp low limit 7 business reply card 43 calculated saturation 76 calibration 11 cautions 2 cleaning 11 cpu pcb replacement 45 D date and time 20 day 8 description of NPB 40 3 digital multimeter 15 disassembly guide 43 disinfecting 11 display pcb replacement 46 display update interval 63 DS 100A 15 dysfunctional hemoglobin 15 E equipment needed for performance checks 15 Er 18 error codes 37 exploded view 57 explosion hazard 1 extension cable 15 NPB 40 external agents 15 F flammable anesthetics 2 fractional saturation 75 front case assembly replacement 49 front panel buttons 5 front panel buttons and symbols 5 function menu 6 functional checks 11 functional saturation 75 functional tests 24 H hour 8 L low perfusion 15 M manufacturer s declaration 69 measured saturation 76 medical procedures 15 minute 8 month 8 N nitrous oxide 12 NPB 40 measurement range 63 O obtaining replacement parts 55 obtaining spare parts 55 operating altitude 68 relative humidity 68 temperature 68 operation with a live subject 23 operational setup 19 operator s manual 9 OXIMAX technology 77 103 Index oximetry overview 75 P packing for shipment 59 packing in a different cart
63. mic tile If floors are covered with synthetic material the relative humidity should be at least 30 Main power should be that of a typical commercial or hospital environment Power frequency magnetic fields should be at levels characteristic of a typical location in a typical commercial or hospital environment Portable and mobile RF communications equipment should be used no closer to any part of the NPB 40 including the cables than the recommended separation distance calculated from the equation applicable to the frequency of the transmitter where P is the maximum output power rating of the transmitter in watts W according to the transmitter manufacturer and d is the recommended separation distance in meters m 72 Specifications Table 7 Electromagnetic Immunity Continued The NPB 40 is intended for use in the electromagnetic environment specified below The customer or user of the NPB 40 should assure that it is used in such an environment Field strengths from fixed RF transmitters as determined by an 3 5 electromagnetic site survey should d be less than the compliance level in 1 80 MHz to 800 b MHz each frequency range 7 800 MHz to 2 5 GHz Interference may occur the vicinity of equipment marked with this symbol 2 Note 1 At 80 MHz the higher frequency range applies Note 2 These guidelines may not apply in a
64. n Bennett Division 4280 Hacienda Drive Pleasanton CA 94588 U S A Telephone 1 800 635 5267 Authorized Representative Tyco Healthcare UK LTD 154 Fareham Road Gosport PO13 OAS U K 2004 Nellcor Puritan Bennett Inc All rights reserved Rx ONLY 0123 067008 1004 Healthcare
65. nior seson 3 Identification of Front Panel Buttons and Symbols 3 FUNCTION MENU rA Ra FX PEE 6 7 Related 9 Routine Maintenance 11 Cleaning 11 Periodic Safety Checks 11 F nctional CHECKS 11 Battery Installation 12 Performance 15 Introd ctiO r 15 Equipment Needed ote tete 15 Performance T6StS user ctr bre da Same pe a 15 Power On Self Test i tetti a pA aa re ca E ER a 15 DISCUSSION TID 15 a IQ 16 Operational M 19 Setting the Time and Date 20 DISCUSSION 20 Procedure 20 General Operation 23 Operation with Live 2
66. ogether and install the four screws See Figure 16 items 1 through 4 Figure 16 Installing The Case Screws 7 Install the batteries and battery cover as shown in Figure 17 1 Batteries 2 Battery cover 3 Battery cover latch Figure 17 Battery Installation 8 Perform the performance verification tests before placing the NPB 40 into service See Pulse Oximetry Functional Tests on page 24 NPB 40 51 Disassembly Guide Rear Case Assembly Replacement Perform the following procedure to replace the rear case assembly 1 Remove the batteries from the NPB 40 See Prior to Disassembly on page 43 2 Separate the front and rear case assemblies See Separating the Front and Back Cases on page 44 CPU PCB are held in slots in the battery compartment Observe how these connectors are engaged in these slots when you remove the CPU PCB and display PCB and ensure that the battery connectors are inserted back in these slots when you reassemble the NPB 40 Caution The battery connectors spring assemblies at the bottom of the 3 Lift the CPU PCB and display PCB from the case See Figure 18 Figure 18 Display PCB and CPU PCB Removal 4 Discard the rear case assembly in accordance with local regulations 52 Disassembly Guide 5 Install the display PCB and CPU PCB into the NPB 40 case Ensure that the battery springs slip into place See Figure 19 Figure 19 Battery Spring Alignment
67. olish Operator s manual Portuguese Operator s manual Russian Operator s manual Spanish Operator s manual Swedish Operator s manual Turkish Paper for Citizen printer roll Printer Citizen model PD 22T Service manual English Strap protective boot SRC MAX tester pulse oximeter Spare Parts Figure 23 shows the NPB 40 expanded view with numbers relating to the spare parts list Figure 23 Exploded View NPB 40 57 lt This Page Intentionally Blank 58 Packing for Shipment Introduction To ship the NPB 40 follow the instructions in this section Returning the NPB 40 Contact Nellcor s Technical Services Department or your local Nellcor representative for shipping instructions including a Returned Goods Authorization RGA number Unless otherwise instructed by Nellcor s Technical Services Department it is not necessary to return the OxiMAx sensor or other accessory items with the NPB 40 Pack the NPB 40 in its original shipping carton If the original carton is not available use a suitable carton with appropriate packing material to protect it during shipping Return the NPB 40 by any shipping method that provides proof of delivery Pack the NPB 40 carefully Failure to follow the instructions in this section may result in loss or damage not covered by any applicable Nellcor warranty If the original shipping ca
68. on 60 parts list 55 performance verification 15 periodic safety checks 11 physiological conditions 15 POST pass tone 18 power on self test 15 print data 7 pulse beep volume 7 R rear case assembly replacement 52 related documents 9 repacking in original carton 59 replacement battery compartment door 54 cpu pcb 46 display pcb 46 front case assembly 49 rear case assembly 52 replacement level supported 43 returned goods authorization rga number 59 returning the NPB 40 59 rga number 59 routine maintenance 11 5 safety analyzer 15 safety tests 31 satseconds alarm management 76 sensors 67 separating the front and back cases 44 service manual 9 software version 17 spare parts 55 spare parts on internet 9 specifications 63 battery 67 compliance 69 electrical 67 environmental 68 performance 63 physical 69 SpO2 high limit 7 104 SpO2 low limit 7 SRC MAX 24 SRC MAX tester 15 stopwatch 15 storage altitude 68 relative humidity 68 temperature 68 strangulation 13 surface cleaning 11 T technical discussion 75 test 1 SpO2 27 test 2 bpm 26 test 3 modulation level 28 test 4 light level 29 time out 20 toxic chemicals 1 transport altitude 68 relative humidity 68 temperature 68 troubleshooting guide 33 verify performance 15 warnings 1 wavelength 67 wavelength sensor 67 who should perform repairs 33 Y year 8 NELLCOR Tyco Healthcare Group LP Nellcor Purita
69. pring Alignment Note longer screws install at the top of the case See Figure 12 items 1 4 8 Align the front and rear cases See Figure 12 Figure 12 Installing The Case Screws 9 Install the four screws Figure 12 items 1 through 4 48 Disassembly Guide 10 Install the batteries and battery cover See Figure 13 1 Batteries 2 Battery cover 3 Battery cover latch Figure 13 Battery Installation 11 Perform the performance verification tests before placing the NPB 40 into service See Pulse Oximetry Functional Tests on page 24 Front Case Assembly Replacement The front case assembly contains the keypad Perform the following procedure to replace the front case assembly 1 Remove the batteries from the NPB 40 See Prior to Disassembly on page 43 2 Separate the front and rear case assemblies See Separating the Front and Back Cases on page 44 3 Dispose of the front case assembly in accordance with local regulations NPB 40 49 Disassembly Guide 4 Connect the new front case assembly ribbon cable to the CPU PCB connector J3 See Figure 14 Figure 14 Front Case Ribbon Cable Connection 5 Lock the ribbon cable connector See Figure 15 1 2 3 4 1 CPU PCB 2 J3 lock 3 Lock direction 4 Unlock direction Figure 15 Locking CPU PCB Connection to J3 50 Disassembly Guide 6 Place the front and rear cases t
70. ransducer to provide the NPB 40 tones 40 LCD IrDA Technical Discussion The liquid crystal display LCD is driven by the CPU The LCD displays the patient s SpOz and pulse rate The LCD also displays icons indicating the status and functions of the NPB 40 Refer to the NPB 40 Operator s manual for a description of the icons c a mA Y XH gt The IrDA Infrared Data Association is an industry standard for infrared communications The IrDA receives information from the CPU converts it and sends it to an external printer The external printer communicates with the IrDA Refer to the printer manual for more information Power Supply The user interface PCB power supply receives power from the SpO2 PCB power supply The power supply provides a regulated 3 0 volts DC to the CPU Power Supply Monitoring The power supply outputs are monitored by the power monitoring function to ensure stability The power supply monitoring circuit sends a reset signal to the watchdog circuits to shut down the NPB 40 when voltages are out of tolerance The power supply monitoring circuit monitors the battery output voltage and shuts down the NPB 40 when the battery voltage is critically low The circuit provides the low battery signal 81 Technical Discussion This Page Intentionally Blank 82 7 RXD5V C106 7 TXD5V gt 4 RST L5V C114 4
71. rd 79 ei 80 A S 80 GPU and Flash 2 reete E 80 Real Time Clock 80 PUNO 80 81 Jj e 81 Contents Power Supply eai aid 81 Power Supply Monitoring 2 81 lj bum T n 103 NPB 40 iii Contents Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 Figure 21 Figure 22 Figure 23 Figure 24 Figure 25 Figure 26 Figure 27 Figure 28 Figure 29 Figure 30 Figure 31 Figure 32 Figure 33 Figure 34 Figure 35 Figure 36 Installing 12 SRC MAX Oximetry Tester 24 Typical Error Code Display sese 34 Installing ictor dne ete 44 NPB 40 Case Screws esses 44 Cases Separated 1 45 CPU PCB Connector J3 45 Display PCB and CPU PCB Removal 46 Separating the Display PCB and CPU
72. rton is not available use another suitable carton North American customers may call Nellcor s Technical Services Department to obtain a shipping carton Repacking in Original Carton NPB 40 If available use the original carton and packing materials See Figure 24 Pack the NPB 40 as follows 59 Packing for Shipment 1 Place the NPB 40 original packaging Figure 24 Packing 2 Place in shipping carton and seal carton with packing tape 3 Label carton with shipping address return address and RGA number Packing in a Different Carton If the original carton is not available use the following procedure to pack the NPB 40 1 Place the NPB 40 in a plastic bag 2 Locate 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 60 40 Packing for Shipment Place the bagged unit on the layer of packing material and fill the box completely with packing material Seal the carton with packing tape Label the carton with the shipping address return address and RGA number 61 Packing for Shipment 62 This Page Intentionally Blank Specifications Performance NPB 40 Measurement Range SpO2 1 to 100 Pulse Rate 0 20 beats per minute bpm to 300 bpm Perfusion Range 0 03 to 20 Accuracy and Motion Tolerance Sat
73. t The pulse oximeter bases its SpO2 measurements on the difference between maximum and minimum absorption 1 measurements at systole and diastole By doing so it focuses on light absorption by pulsatile arterial blood eliminating the effects of nonpulsatile absorbers such as tissue bone and venous blood Functional versus Fractional Saturation NPB 40 This pulse oximeter measures functional saturation oxygenated hemoglobin expressed as a percentage of the hemoglobin that can transport oxygen It does not detect significant amounts of dysfunctional hemoglobin such as carboxyhemoglobin or methemoglobin In contrast hemoximeters such as the 482 report fractional saturation oxygenated hemoglobin expressed as a 75 Technical Discussion percentage of all measured hemoglobin including measured dysfunctional hemoglobins To compare functional saturation measurements to those from an instrument that measures fractional saturation fractional measurements must be converted as follows fractional saturation functional saturation x 100 100 96 carboxyhemoglobin methemoglobin Measured versus Calculated Saturation When saturation is calculated from a blood gas partial pressure of oxygen 2 the calculated value may differ from the SpO2 measurement of a pulse oximeter This usually occurs because the calculated saturation was not appropri
74. uration Without Motion 70 to 100 2 digits With Motion 2 70 to 100 3 digits Low Perfusion 70 to 100 2 digits Pulse Rate Without Motion 2 3 20 to 250 bpm 3 digits With Motion 2 normal physiologic range 55 125 bpm 5 digits Low Perfusion 3 20 to 250 bpm 3 digits 1 Saturation accuracy will vary by sensor type Refer to the Sensor Accuracy Grid The Sensor Accuracy Grid is shipped with the NPB 40 The latest version of the Sensor Accuracy Grid is available on the Internet at http www mallinckrodt com respiratory resp Serv_Supp ProductManuals html 2 Applicability OxiMAX MAX A MAX FAST DS 100A D YSE SC NEO and OxiCliq A sensors Specification applies to NPB 40 performance Display Update Interval 100 millisecond 63 Specifications 64 Audible Indicators Andible Parameter Value Indicator Alarm Volume Setting Volume level Adjustable 40 to 52 dB A at one meter Pitch 30 Hz 752 Hz On pulse width 500 msec 20 msec Off Interval 20 msec 10 msec Number of pulses in burst 1 Repetition Pause N A 2 sec Priority 1 Beep Volume Volume level Adjustable 42 to 52 setting dB A at one meter Pitch 30 Hz 1500 Hz On pulse width 500 msec 20 msec Off Interval 20 msec 10 msec Number of pulses in burst 1 Repetition Pause N A 2 sec Priority 2 POST
75. w level modulation 11 Disconnect all equipment and turn off the NPB 40 The NPB 40 safety tests meet the standards of and are performed in accordance with EN 60601 1 1990 A1 and A2 IEC 60601 1 UL 60601 1 and CAN CSA C22 2 No 601 1 This product is categorized as internally powered type BF equipment 31 Performance Verification 32 This Page Intentionally Blank Troubleshooting Introduction This section explains how to troubleshoot the NPB 40 Tables list possible NPB 40 difficulties along with probable causes and recommended actions to correct the difficulty How To Use This Section Use this section in conjunction with Performance Verification on page 15 and Spare Parts on page 55 To remove and replace a part suspected of being defective follow the instructions in Disassembly Guide on page 43 The circuit analysis section in the Technical Discussion on page 75 offers information on how the NPB 40 functions Who Should Perform Repairs Only qualified service personnel should open the NPB 40 housing remove and replace components or make adjustments If your medical facility does not have qualified service personnel contact Nellcor s Technical Services or your local Nellcor representative Troubleshooting Guide majority of problems you may encounter However problems not covered here can be resolved by calling Nellcor s Technical Services or your local Nellcor representative 9 Note Follow t

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