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Passport 2 Service Manual

1. 7 1 Preventive Maintenanee Schedule eh rtr e ea p ende de rti re ed oe ro Mechanical Physical Visual Inspaction 55 n a PUERO crannies ai a ote Perform at Twelve Monih Intervals 2 Rn oo iv Preventive Maintenance Kit Perform Verification and NIBP Calibration Annually Perform Verification and Calibration Annually User Preventive Maintenance Introduction inerte p de eh e mee Peta ide HH Be Care And Cleaning Of The Monitor Care and Cleaning of SpO gt Sensor Cleaning Sensors Adapters And Sampling Components Sterilization and Cleaning of Reusable Cuffs sse Battery Replacement and e dett leere Battery Replacemehl itte t RR oue obe Battery Maintenance epe ek Deed Recorder Paper Replacement ele boe itr ei deus chances Mte e iet rude idea Cete Care and Storage oF Thermal Chart Paper ruinn e r r a e How repe tenute usq debo ded a References EE lu USA Canada Mexico and Puerto RICO so uuu a ertt re o e e et e eee eer oet International excluding North America sss eee re Manvf
2. 6 20 6 5 6 NIBP Verification 6 21 6 5 7 Battery Operation Verification 6 21 6 5 9 Operation Verification 6 21 6 5 10 Leakage Current Tests 6 21 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Calibration Introduction 6 1 6 2 6 3 6 3 1 Calibration Procedure Calibration Introduction The following procedures are provided to verify the proper operation of the Passport 2 Monitor Service Diagnostics provide the capabilities of diagnosing problems within the Passport 2 hardware A menu driven interface with the same look and feel as that of the Passport 2 User Interface is used to execute all tests CAUTION Calibration is not to be performed while monitoring a patient Warning and Guidelines In the event that the instrument covers are removed observe these following warnings and general guidelines 1 Do not short component leads together 2 Perform all steps in the exact order given 3 Use extreme care when reaching inside the opened instrument Do not contact exposed metal parts which may become live 4 Read through each step in the procedure so it is understood prior to beginning the step Test Equipment and Special Tools Required Descri
3. 7 17 Manufacturers Responsibility 7 18 Extended Warranty Passport 2 Passport 2 LT Service Manual 0070 10 0441 7 2 7 2 7 2 7 2 7 2 7 2 7 4 7 4 7 4 7 5 7 5 7 5 7 6 7 6 7 7 7 8 7 10 7 10 7 11 7 12 7 12 1 Preventive Maintenance Schedule Preventive Maintenance 7 1 7 2 7 2 1 7 5 7 4 7 5 7 6 Preventive Maintenance Schedule The following is a list of activities required for periodic maintenance of the Passport 2 monitor The physical inspection replacement of consumable items and performance checks should be performed at the recommended intervals stated below Mindray DS USA Inc is not responsible for component failure or loss resulting from the use of stated consumable items beyond their recommended replacement interval Mechanical Physical Visual Inspection Perform at Twelve Month Intervals Suggested Inspections for Wear and Abuse 1 Outer case Line Cords Rolling Stands Wall Mounts Modular Accessories and Interconnecting Cables 2 Patient Interface Connections ECG IBP SpO2 Temp CO and NIBP Preventive Maintenance Kit 1 N A Perform Verification and NIBP Calibration Annually See section 6 5 Verification 2 See section 6 4 7 2 Static Pressure Calibration 3 In order to minimize unexpected failure of the N
4. 6 2 6 3 Test Equipment and Special Tools Required 6 2 6 3 1 Description uuu uu eee ee eee ee eee eee ee eene esso ssis aa 6 2 6 4 Diagnostics 3 6 4 1 Diagnostic Test Menu 6 3 6 4 2 Keypad Control Knob Test 6 4 6 4 3 Recorder Test 6 5 6 4 4 Display Tests 6 4 5 Pixel Test 6 4 6 Color Test 6 7 6 4 7 NIBP Tests 6 8 6 5 Verification 5 5 eee eee eese esos osse eee eessssoseeseeessssseseseesss O7 17 6 5 1 Initial Set up O7 17 6 5 2 Tests O 18 6 5 3 IBP 1 and IBP 2 Verification 6 20 6 5 4 Temperature Verification 6 20 6 5 5 SpO Verification
5. eee 2 31 0670 00 0680 0 T 5 aaa d asun ette d e beet rot fidus d orte e 2 32 0670 00 0680 02 o ger 2 32 Nell or Initertace Bedard 2 oo 2 33 Recorder Interface Board ARAZ 5 aaa aa ai ayaka EE a 2 33 Detailed Description cece ects tee s 2 33 XE 50 Recorder Interface Board 2 34 Cooling Faulb Per ERIS 2 34 FanFault Sense E M 2 34 Power Filtering mito 2 34 Piste 2 34 0070 10 0441 Passport 2 Passport 2 LT Service Manual Jable of Contents SV Regulator UA ene Re te o e OR UHR NODI NU 2 35 Power IIT EET 2 36 Part Numbers 0014 00 0250 and 0014 00 0190 01 2 112 212 20000000000000000220000 2 36 Part Number 0014000251 eer Da Gua xe LE 2 37 Communication Isolation El Display Interface Board Overview Detailed Description Passport 2 Passive Display Keypad Interface Boord aaa en eee 2 41 QVer
6. LEAD COLOR LEAD COLOR V Brown Chest White Right Arm RA White Right Arm R Red Left Leg LL Red Left Leg F Green Left Arm LA Black Left Arm L Yellow Right Leg RL Green Right Leg N Black 0070 10 0441 Passport 2 Passport 2 Service Manual Disassembly Instructions Repair Information IABP Cable ECG IBP only for serial numbers 5 5 and higher 5 e i m i si 35 TA 5 Els toa 4 ETS PI em SeeNoe 0 P1 2 P2 ECG AOUT1 ECG 1 BRN TP AOUT2 PRESS 2 m GNDA 3 i 4 lt N C 4 I GND 5 lt DOUT 6 BE P3 PRESS BRN IP 4 i f RING Connector shell Shield drain wire BLK F FIGURE 3 3 IABP Cable ECG IBP P N 0012 00 1650 01 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Disassembly Instructions Repair Information ECG Shielded Lead Wires PART NUMBER LENGTH AND DESCRIPTION 0012 00 1261 01 18 snap lead set USA 0012 00 1261 02 24 snap lead set USA 0012 00 1261 03 40 snap lead set USA 0012 00 1261 04 18 snap lead set International 0012 00 1261 05 24 snap lead
7. CRT Mounting Plate P N 0386 00 0220 i Arm Mounting Plate 0406 00 0631 Screws 4 P N 0212 00 0806 Note Westbrook Engineering Wall Mount is used for this kit Single Remote Color Display Wall Mount Kit P N 0020 00 0108 Passport 2 Passport 2 Service Manual Repair Information Safety Precautions Basic Passport 2 Accessories Co2 Scavenging Assembly Filterline Nasal Canula Adult P N 0008 00 0332 01 P N 0683 00 0467 25 Connects to 181 Co2 Exhaust Port c i RI Connects to Co2 Input Port Filterline Set Short Term Adult Ped P N 0683 00 0470 25 d Ij Recorder lt i P N 0683 00 0422 02 400 Series Instrument cable fl or P N 0012 00 0975 I Connects to P N 0683 00 0505 02 EE Temperature Input Port Invasive Pressure Ports 1 amp 2 See Note 400 Series Skin Temp Sensor zx 0206 03 0300 02 A pe NIBP Adult Cuff X P N 0998 00 0003 54 Connects to Spo2 Input Port p Datascope Connects to Masimo Adult Ped Spo2 Kit ECG Cable Assembly 10 Input Port Battery NIBP Hose 3 5 Meters P N 0683 04 0004 E 3 Lead Wire Set USA Snap 18 Battery P N 0012 00 1261 07 EN 5 Lead Wire Set USA P N 0146 00 0043 Snap 18 3 Lead Wire Set International AL P N 0012 00 1261 01 Passport 2 Snap
8. mmHg Apply 50 150 and 300 mmHg and verify that the following parameters Sys Dia Mean agree Apply a 120 80 mmHg signal into IBP 1 and a 60 20 mmHg signal into IBP 2 and verify the correct waveforms are displayed in the window Temperature Verification l 2 3 Set the Simulator to 37 C 400 series probe Verify the temperature is 37 0 3 Repeat same test for 700 series probe SpO Verification Set the Passport 2 to display waveform 4 as pleth Set the HR source to Auto Verify that the SpO2 message is displaying No Sensor in Message area B Connect the SpO sensor to the Panel connector Verify the SpO2 message changes to Sensor off or initializing Apply sensor to finger Verify window 4 displays the pleth waveform and the SpO indicates a valid reading Verify the HR is from SpO and a beep tone is present 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure Verification 6 5 6 NIBP Verification 1 Connect the Adult cuff connector to the NIBP hose Attach the NIBP hose to the Cuff connection the left side on the monitor 2 Apply cuff and press the start key on the Passport 2 3 Verify the pump motor starts to pump and inflates the cuff to 180 mmhg Adult The cuff will begin to deflate and obtain a blood pressure reading of Sys Dia Mean in about 20 to 30 seconds after peak pressure is obtained 4 Verify the reading on screen
9. Pacer Pulse Electrosurgical Interference Detection essere Passport 2 Passport 2 LT Service Manual 0070 10 0441 i Table of Contents elei TIRE 2 17 Invasive Blood Pressure RR Er etie eee de de Rea dee ean 2 18 Temperdfures bated Mecum o nat ae chs assis 2 19 Uu CIT 2 19 Data to te oed de ea ar RE i RR ERR OR EHE e MER E RA ES 2 20 TFT Display Monochrome Interface Board and Keypad Board P N 0670 00 0686 or 0670 00 0726 2 21 Interface to the CPU Board VIA SPI mener nne 2 21 Vide display connections ra si tre o d ol e a qa aaa e E Re 2 21 IC Med 2 21 Speaker connection ii e e e C e RR SUR E E ER RE UR Ee EN P de 2 21 Ericoder connecti n u ttt eet ar 2 21 NIBP Module 0997 00 0501 aee er 2 22 Pheumatic System Control etes et oet eo dt eade ds eld e cas Re HORA 2 22 Pressure Transducer P Ti xn eget s SE ed D esee cette gag 2 23 Pressure Transducer PT2 ete c atte et ee ote tal naa ode ee ted sese oed 2 23 OverPressure Detection te eco e 2 23 Wille TDI 2 24 Dump Valve V T aeree RIDERE UE m
10. Service Manual 30 Repair Information 3 1 Introduction 3 1 3 2 Safety Precautions 3 1 3 3 Troubleshooting Guidelines 3 7 3 4 Exchange Programs 3 7 3 5 Special Tools Required 3 7 3 6 Disassembly Instructions 3 8 4 Introduction This chapter of the Service Manual provides the necessary technical information to perform repairs to the instrument The most important prerequisites for effective troubleshooting are through understanding of the instrument functions as well as understanding the theory of operation 3 2 Safety Precautions In the event the instrument covers are removed observe the following warnings and guidelines 1 Do not short component leads together 2 The instrument covers must not be removed by other than qualified technical personnel who have received supplementary instructions regarding maintenance of medical equipment or has equivalent experience in this area Passport 2 Passport 2 LT Service Manual 0070 10 0441 Safety Precautions Repair Information Stationary Mount Bedrail Hook Mount Vis
11. module to the back housing assembly 5 Slide the Module to the left and lift the Module up and out of the back housing Removal of the Patient Connector Panel 1 Remove the two screws that secure the Patient Connector Panel housing the back housing 2 Slide the Patient Connector housing toward the back 3 Swing the housing open and remove the CO exhaust tubing connector and input connector retainer clip optional 4 Disconnect the Ribbon cable assembly from the module 5 Remove the two screws that secure the SpO connector to the Panel assembly Removal of the Recorder Assembly 1 Open the recorder door and locate the captive screws in the rear of the recorder 2 Slide the recorder from the opening and remove Removal of Recorder Interface Board 1 Remove the Front Housing as stated in Paragraph A 2 Remove the Main frame as stated in Paragraph E 3 Remove the recorder assembly as stated in Paragraph K 4 Remove the Cable assembly from J3 5 Remove the three screws and pull the board from the unit M Removal of the Power Supply 1 Insert a narrow flat blade into each of the four slots and release each tab 2 Ensure not to damage each tab Remove the plastic cover 3 Remove the four screws from the corners of the metal housing 4 For units with Li ion batteries only a control cable is connected to the power supply as shown in Figure 5 5 on page 5 13 The power supply cannot be completely remove
12. 40 pinch 3 lead set International 0012 00 1262 13 3 40 2 60 pinch 5 lead set USA 0012 00 1262 14 3 40 2 60 pinch 5 lead set International LEAD PATIENT END TERMINATION CONNECTOR J SHIELD 5 Lead USA 3 Lead USA L 1 00 GREEN L 1 00 f 1 BLACK WADE ea 22 mae y u TWO lt SHORTED qi 5 Lead International 3 Lead International 4d gt COLOR AS LEAD WIRE 5 lt 3 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Disassembly Instructions Repair Information Panorama Mobility Lead Wires P N 0012 00 1503 XX DESCRIPTION DASH 24 snap 5 lead set Domestic 02 24 snap 3 lead set Domestic 05 24 snap 5 lead set International 11 24 snap 3 lead set International 14 L SIRAIGHI 5X 402 160 1 45 160 1 00 POSITION 1 POSITION 6 TERMINALS PLUS POSITIONS RL N 5 10 o 9 LA L 4 9 o 20 9 LL F 3 8 o o 9 RA R 2 1 o ET vic O 9 PIE XA UR Lu mU E tL STRAIGHT LENGTH e 9 e e POSITION I POSITION 6 LEADWIRE PLUG POSITIONS 9 9 10 4 9 o 9 LL F 3 8
13. 5 Disconnect the ground strap Removal of the TFT Panel EL Panel Passive Panel Keypad Panel Board 1 Remove the Encoder cable assembly from connector J4 2 Unlatch the connectors and remove the Keypad Cable assemblies from connectors J10 and J11 EL or LCD 11 and J12 Passive 3 Remove the Speaker cable assembly from connector J2 4 Remove the inverter cable assembly from connector J8 LCD only 5 Remove the screw that secures the LCD cable assembly cover on J3 LCD only 6 Remove the cable assembly from the connector J3 LCD only 7 Remove the EL Cable Assembly from connector J EL only 8 Remove the 5 screws that secure the panel board the front housing 9 Remove the 2 screws that secure the ferrite clip to the Panel Keypad Board 10 Lift the panel board up and out from the front housing Removal of the LCD Display EL Display 1 Remove the TFT EL Keypad Board as stated in Paragraph B 2 Remove the high voltage cable assembly from the high voltage board at connector CN2 LCD only 3 Remove the inverter cable assembly from the high voltage board at connector LCD only 4 Remove the two screws that secure the high voltage assembly to the left rail LCD only 5 Remove the two screws that secure the display driver cable bracket to the right side rail LCD only 6 Lift display driver cable assembly cable carefully from the LCD display EL Display 7 Remove the four screws that secure the LCD EL d
14. E RA R 2 1 mu SHIELD Qe FIGURE 3 4 Panorama Mobility Lead Wires 0070 10 0441 Passport 2 Passport 2 Service Manual Repair Information Disassembly Instructions Category 5 Ethernet Cable PART NUMBER LENGTH AND DESCRIPTION 0012 00 1274 01 6 feet Cat 5 Ethernet Cable 0012 00 1274 02 25 feet Cat 5 Ethernet Cable 0012 00 1274 03 50 feet Cat 5 Ethernet Cable RJ 45 RJ 45 P1 P2 Pin 1 Serial Port to Serial Port Cable P N 0012 00 1275 01 P1 P2 B jp JU in mm L ee Female Connector Shield Cable shield Connector Shield x ic N C Female Passport 2 Passport 2 LT Service Manual 0070 10 0441 Disassembly Instructions Repair Information Serial Port to Gas Module Cable PART NUMBER 0012 00 1276 01 LENGTH AND DESCRIPTION 12 inch 9 pin mini D serial to 25 pin D shell 0012 00 1276 02 72 inch 9 pin mini D serial to 25 pin D shell 2X 1 00 13 o 9 5 _ o NU P2 u DETAIL ee 1617 18 1920 22 DETAIL A P1 P2 __ NC 2425 2 23 3 lt 22 4 lt NC NC 8 21 Rc 6 9
15. v o M Peasants duane v Warning ep A n E 1 Introduction E NE ebd 1 1 Controls Indicators And Connectors ee e e ee hte eget et P e Po c et erbe 1 2 Gm Theory of Operation e Ee ss a aku han ev Serial Communications Channels sss eene eene Fast Ethiernet Controller u a toL Moo Power On Reset 014 Flash Memory U3 U4 05 06 U180 0181 U182 0183 DRAM M mory U8 UTO i isi ats ste d eR er ERO acr OS ERE Rea E tie E E ide iba delta nes RIC With GRU Supervisor Battery Backup SRAM N mrt tere Dual Port RAM UZZZ dore te tee en e t dt eee ht tb pc tdi abt Audio Generator Circuit 012 U27 Module ID UA et ettet aea Tone Generator U39 LED GRT VGA Controllers U T6 n e u e a eoe e m e eee e et PCMGIA Int rface er tesi a i e oe td aed S riaL EEPROM gere E a TE Sel a STAR Sins ie AU A Murat
16. Battery Replacement 1 Open battery compartment door on left side of unit by pressing the finger grip area and sliding the door to the left 2 Press the release button located on the right side of the installed battery This will eject the battery Slide out old battery 3 Slide in replacement battery until it clicks into place 4 Close battery compartment door by sliding the door to the right until it firmly clicks into place CAUTION Replace sealed lead acid batteries with P N 0146 00 0043 ONLY Replace lithium ion batteries with P N 0146 00 0069 ONLY Battery Maintenance The batteries may be subject to local regulations regarding disposal At the end of the battery life dispose of the batteries in accordance with any local regulations CAUTION Recharge batteries in the Passport 2 Passport 2 LT CAUTION Remove the batteries if the Passport 2 Passport 2 LT is not likely to be used for an extended period of time Sealed Lead Acid Due to the self discharge characteristics of sealed lead acid batteries it is imperative that they are charged after 3 months of storage or unit not in use If not permanent loss of capacity may occur as a result of sulfation Charge retention at 20 C is 6 months to 83 Lithium Ion Storage of the lithium ion batteries depends on temperature time period and the degree of cell charging state After 6 months of storage at 23 C fully charged lithium ion batteries have a retention capacity
17. Tel 31 33 25 44 911 e Fax 31 33 25 37 621 Mindray UK Limited 3 Percy Road St John s Park Huntingdon Cambridgeshire 29 652 e United Kingdom Tel 01480 416840 Fax 01480 436588 Mindray Medical France SARL Europarc Cr teil 123 Chemin des Bassins 94035 Cr teil Cedex France Tel 0 1 45 13 91 50 Fax 0 1 45 13 91 51 Mindray Medical Germany GmbH Zwischen den 4 64625 Bensheim Deutschland e Tel 49 6251 17524 0 Fax 49 6251 17524 20 Mindray Medical International Ltd 2813 Office Tower Convention Plaza 1 Harbour Road Wanchai Hong Kong Tel 852 2793 5596 Fax 852 2344 8824 Medstar Importa o Exporta o Ltda Av Vereador Jos Diniz 3300 S o Paulo SP CEP 04804 000 e Brazil e Tel 55 11 2872 3385 e Fax 55 11 2872 3385 0002 08 8918
18. Theory of Operation Front End Module 2 2 13 Temperature Patient temperature is monitored by a thermistor probe Either YSI 400 series or 700 series probes can be used with autodetection of probe type When the 400 series is used the temperature channel is accurate to 0 2 Correct calibration is continuously verified as is required by European standards The YSI 400 series probes contain a single thermistor wired between the tip and sleeve of a two circuit inch phone plug The 700 series probes contain two thermistors and use a three circuit plug The sleeve of the plug is connected to the common of the two thermistors The primary thermistor is connected to the tip contact and a secondary thermistor is connected to the ring contact However only the primary thermistor is used for temperature measurement The secondary thermistor is used as the basis for probe type autodetection The ring contact of the probe socket is biased through a resistor from the 5 volt supply and has its voltage monitored by the 68HC16 internal When a series 400 probe is connected the solid metal sleeve of the plug shorts the socket s ring contact to ground so the ADC reads essentially zero If no probe is connected the ADC reads near full scale However if a series 700 probe is connected a voltage divider is formed by the bias resistor and the secondary thermistor Therefore the ADC reads an intermediate value which depends on the probe tempera
19. 16 6 ses lt 24 c N IR lt Yf aii SN LN ix 17 0998 00 0178 05 RD1 NC1 SP1 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Parts List Rear Housing Replacement Parts 6 2 5 1 y a lt L T 3 3 19 lt x 1 7 25 1 17 20 SS 0998 00 01 78 06 SP1 NC1 SP2 5 22 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Passport 2 Passport 2 LT Service Manual Parts List Rear Housing 6 lt _ cL I 13 x is N SN NINS PS NN Ya NN lt Y 14 15 0998 00 0178 03 CS1 MB1 RD1 0070 10 0441 Replacement Parts Parts List Rear Housing 0998 00 01 18 04 CSI MBI SPI Passport 2 Passport 2 Service Manual 0070 10 0441 Replacement Parts Parts List Rear Housing 5 3 Communication Ports Parts List ITEM NO DESCRIPTION PART NUMBER l Housing Top 0380 00 0346 2 Screw Pan Head 4 25 length 0212 12 0405 3 Screw Captive Pan Head 0217 02 0004 4 Socket Guide Docking Connector 0132 00 0077 5 Label Information 0334 00 1533 Label N A 7 TBD 8 TBD 9 TBD 10 TBD 11 Label CS1 Comm Port 0334 00 1541 12 PCB Assy Comm Port CS1 SP1 0670 00 06
20. It is generated by a sub circuit of CPLD U1 by decoding Address lines A 18 20 in conjunction with an active CS3 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation CPU Control Module 2 1 12 Tone Generator U39 The tone generator is implemented using an eight bit microcontroller The device generates a tone signal of 909Hz for a duration of 300ms The tone is generated in response to the following input conditions 1 When the system is first turned on the level of the MPC860T s BRESET same as HRESET signal is monitored If this level is detected as high the tone is generated 2 When an active low status signal input is detected the tone is generated The status signal tone 769Hz for a duration of 300ms is generated by the MPC860T on Port A bit 4 PA4 The signal can be repeated as required in order to create a series of tones 2 1 13 LCD CRT VGA Controller U16 The LCD VGA controller is a SPC8110 with an integrated RAMDAC PLL Bit Block Transfer engine and a VL Local Bus interface It is capable of displaying 256 colors Support for video modes of 640 X 480 and 800 X 600 is required The display controller needs to be able to drive TFT color LCD 10 4 or 12 1 single scan or EL panel dual scan or Monochrome LCD Passive dual scan and an external VGA color CRT simultaneously The display system consists of the LCD CRT controller U16 clock oscillator 065 the programmable clo
21. Mounting Rail Left Passive Display 0436 00 0173 51 Mounting Rail Right Passive Display 0436 00 0174 52 Mounting Block Lower Passive Display 0436 00 0175 53 PCB Inverter Bd K2340 Kyocera Passive Display 0671 00 0222 54 Bracket TFT LCD 0160 00 0069 0406 00 0820 55 PCB Interconnect Panel Bd 0331 00 0117 01 Keypad 0670 00 0726 55 PCB Interconnect Panel Bd 0331 00 0129 Keypad 0670 00 0793 56 Cable Inverter 0012 00 1423 57 Cable Interconnect to LCD assembly 0012 00 1424 58 PCB Inverter Bd 46 Display 0671 00 0230 59 Clamp Cable 0343 00 0108 0070 10 044 1 Passport 2 Passport 2 Service Manual Replacement Parts Parts List Front Housing Keypad Overlay Table P N 0330 00 0029 XX Languages ENGLISH GERMAN FRENCH SPANISH ITALIAN DUTCH JAPANESE DANISH IBP W 01 03 05 07 09 11 13 15 IBP 02 04 06 08 10 12 14 16 Options with an asterisk are not released at this time Languages w ECG View ENGLISH GERMAN FRENCH SPANISH ITALIAN DUTCH JAPANESE DANISH IBP W 51 53 55 57 59 61 63 65 IBP W O 52 54 5 58 60 62 64 66 IBP Options with an asterisk are not released at this time Passport 2 Passport 2 LT Service Manual 0070 10 0441 5 7 Parts List Front Housing Replacement Parts This page intentionally left blank 5 8 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Parts List Front Housing 56
22. P M 2 PLACES 7 62 58 60 59 55 50 44 2PLAcEs 04 2 PLACES 49 72 25 zh DM a E 2 PLACES 77 3 PLACES 24 6PLACES 25 25 2 PLACES N SNAP FITTING UNDER CLIP Top View FIGURE 5 1 Rear Panel Assembly Sealed Lead Acid battery configuration NOTE Standoffs are only required on units with Nellcor SPO2 Use item 24 screw to secure NOTE Bracket is only required on units with Masimo SPO2 24 3 32 2 PLACES 4 2PLACES ig 10 2 PLACES 43 6 PLACES EN lt 64 66 XE 50 Recorder 4g Optional 12lead PCMCIA card bracket and screws Passport 2 Passport 2 LT Service Manual 0070 10 044 1 Parts List Front Housing Replacement Parts ATTACH CONNECTORPART OF 10 TO J3 OF ATTACH CONNECTORPART 4 HIM JF ITEM 7 TO J8 Z 2 OF ITEM 12 SEE SHEET EE DETAIL ae _ N RIENT FAN LABEL N r 12 AN LA 0 IDE DOWN WITH 2c 2PUCE ABLE EXIT 0000070 L HOWN 5 PLACE 12 0609 DETAILE S PLACE ve ALIGN UNUSEL TERMINALAS SHOWN N CONNECTORPART OF ITEM 14 TO 21 OF ITEM 12 SEE SHEET EE DETAIL 504875
23. There are eight programmable chip select wait state control groups only six are used They are listed below The power on reset to the microcontroller is generated by U14 MAX814L CPU Supervisor The signal generated is active low for 1 40ms PORESET is generated whenever both rises from O to 4 75 volts and the 3 3V rises from O to 2 75V The PORESET signal is distributed to other components that require a power on reset by using a spoke distribution with series resistors instead of a daisy chain to better balance the signal paths The U1 CPLD in turn generates a HRESET signal and a buffered BRESET signal that is used to reset all external components that require a reset other than PORESET All high speed clock signal and control lines have series terminating resistors to reduce EMI Serial Communications Channels There are four serial communications channels called SCC s that are part of the MPC860T s Communication Processor Module The following describes the function of each of them This channel is assigned to external communication use It is buffered 049 to RS 232 levels before connection to the docking connector which is part of the base station or comm port system SCC1 will operate in the standard UART mode with all hardware control lines available SCC2 This channel is assigned to external communication use It is buffered U50 to RS 232 levels before connection to the docking connector which is part of t
24. specified with a load capacitance of 20pF To present this load C20 and C21 are set to 33pF The load capacitance is calculated as the series combination of C21 and C22 plus the stray capacitance which is estimated to be less than 5pF At Power On Reset the state of the HC16Z1 pins controlling the pump and valves is such that they are disabled pump off valves open 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 The HC16Z1 has an internal ADC which will be used to monitor both pressure transducer outputs a 2 5V reference source A5V 12V and the switched 12V voltage 12VSW Dividers are used where needed to insure the sampled voltage is within the usable ADC input range A filtered version of T5V is used as the ADC reference 2 15 12 Secondary Microcontroller 04 The PCB incorporates an Atmel AVR microcontroller to perform over pressure sensing The Atmel AT90S4433 8AC is 8 bit RISC architecture AVR microcontroller with AKbytes of in system programmable FLASH 128 bytes of RAM and 256 bytes of EEPROM The device contains 32 byte wide general purpose registers two timer counters a 10 bit ADC with 6 input channels programmable Watchdog SPI Serial interface and 20 individually programmable I O lines The device comes in 32 pin TQFP package and operates between 4 to 6 volts at speeds up to 8 MHz A 2 45MHz ceramic resonator Y2 with b
25. 0 750 SCALE 0750 FIGURE 5 3 Main Rear Assembly P N 0998 00 0170 XXXX Passport 2 Passport 2 LT Service Manual 0070 10 0441 5 11 Parts List Front Housing Replacement Parts Use In P N 0998 00 0900 XXXXX i 05 NELLCOR OXI SMART SPO5 i 07 MASIMO 5 2 r m i LACE Ut i i RI 3 i T ON FROM JT 6 i T OFF 10 Loa 80 i suy suni i TOWA THE ACE ES i an le i i REMOVE POLARIZING KE i 12 1 82 i od 25 ir i 83 25 LCE i sl i iso VIEW EXPLODED i dou i iso VIEW EXPLODED i i 05 NELLCOR OXIMAX SPO5 i i i i m Y i ET ITI 1 ITCH T s ET ALL OTHE TIONS TO OFF 7 i lt i i i i i 3 i i i D gt i ISO VIEW EXPLODED LACES i ALE i i i i FIGURE 5 4 Main Rear Assembly P N 0998 00 0900 XXXX 5 12 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Parts List Front Housing CONNECT CABLE BEFORE INSTALLING POWER SUPPLY J NS COS F m qM E ar X a I FIGURE 5 5 Rear View Lithium lon battery configuration Passport 2 Passport 2 LT Service Manual 0070 10 04
26. 0040 00 0287 02 Cable Hook Assembly P N 0436 00 0132 Single Wall Mount Dimensions Depth Width eunt Track Max Load per Arm Safety Precautions Passport 2 Optional Quick Release Deluxe Mounting Plate P N 0040 00 0299 01 SN X Stationary Mounting Bracket and Screws P N 0040 00 0299 02 Track and Arm Assembly P N 0436 00 0169 Passpo Specifications Notes 1 Itis recommended all AC Power be 120 6amps or 240 3amps Emergency power and a dedicated circuit be provided 2 itis recommended minimum distance from finished floor to bottom of wall mount be 54 inches 3 Location of wall mount is recommended to be to the left or right of the patients head for best visual Revised 12 01 08 Safety Precautions RCD Wall Mount a sa CRT Mounting Plate P N 0386 00 0220 a auc Arm Mounting Plate P N 0406 00 0631 Screws 4 P N 0212 00 0806 Note Westbrook Engineering Wall Mount is used for this kit p Dual Remote Color Display Wall Mount Kit P N 0020 00 0109 Note This kit includes mounting accessories for the Passport 3L 5L and XG monitors See the wall mount kit on previous page for accessories when used with a Passport 2 0070 10 0441 Repair Information
27. 0334 00 1431 67 Label Loading Recorder Paper XE 50 0334 00 2674 68 Bracket Plastic Slotted 0406 00 0805 68 Bracket Plastic Lower miniMediCO 0406 00 0885 69 Bracket Plastic Thru Hole MediCO gt 0406 00 0783 69 Bracket Plastic Upper miniMediCO 0406 00 0879 NS PCMCIA Extended Trend Card 0996 00 0052 01 NS PCMCIA Transfer Card 0996 00 005 1 01 NS PCMCIA Filler Card Blank 0380 00 0372 70 Insulator Nellcor SpO Interface Board 0349 00 0322 71 Clamp Cable 0343 00 0007 72 Input Assembly 0012 00 1400 73 Nut Hex 1 4 x 32 on NIBP fitting 0220 00 0004 74 Washer Flat 0 473 OD 0 260 ID 0221 00 1023 use on NIBP fitting 75 Mounting Bracket 12 Lead 0380 00 0399 01 76 Screw Pan Head 6 32 1 1 2 0212 12 0624 77 Screw Pan Head 6 32 x 3 4 0212 12 0612 78 Bracket Magnetic Shield 0406 00 0833 79 Standoff Plastic 0361 08 0017 80 Cable Tie Anchor 0125 00 0023 81 Washer Shoulder 140 OD 115 ID 0221 00 1026 82 Screw Pan Head 0212 12 0418 N A Not available Passport 2 Passport 2 LT Service Manual 0070 10 0441 Parts List Rear Housing Replacement Parts ITEM NO DESCRIPTION PART NUMBER 83 Cable Tie 0125 01 0001 84 Standoff Plastic 0361 30 0375 85 Clip Plastic 0343 05 0001 N A Not available CONNECTOR PANEL LABEL P N 0334 00 1501 ENGLISH GERMAN SPANISH ITALIAN NELLCOR MASIMO NELLCOR OXIMAX NELL3 NELLCOR MASIMO NELLCOR
28. 1 6 3 20 0070 10 0441 Passport 2 Passport 2 Service Manual Repair Information Disassembly Instructions Nurse Call Cable 3 pin circular to unterminated P N 0012 00 1277 02 I 5 in max 0 cil DO 172 am in max sq 10 ft 6 cable shield E ES Bk NC i i iis cable shield connector N circuit board shield Passport 2 Passport 2 Service Manual 0070 10 0441 3 21 Disassembly Instructions Serial Port to RJ 45 Cable VISA P N 0012 00 1299 01 Repair Information P1 6 9 5 lt 10 ft 1 in P1 Connector shield P2 Cable shield 1 1 i N C 6 9 2 5 Pin 1 P1 P2 10 ft 1 in gt Female P1 P2 1 lt 1 24 2 3 gt 8 4 N C N C 4 5 lt 5 69 lt N C N C 6 9 Male 22 0070 10 0441 Passport 2 Passport 2 Service Manual Repair Information Disassembly Instructions 26 pin Molex to Mini Din Cable DPD sync Cable PART NUMBER LENGTH 0012 00 1301 01 8 inches 1 inch 0012 00 1301 02 10 feet 6 inches P1 I
29. 100 20 Scale 10 ECG Tests Initialization 2 Calibration Procedure Observe that the trace display sweeps across the waveform 1 screen in five seconds There should be five complete ECG cycles The same display and timing should be seen in the Waveform 2 screen Check the following sweep speeds for the appropriate displays 12 5 mm sec 10 second sweep window Leads OFF 2 Disconnect one lead at a time RA RL LL LA and C from the simulator and observe that the message Lead OFF appears on the display Set the ECG simulator to Short Leads Verify the resolution does not exceed one pixel resolution 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure 6 5 2 3 6 5 2 4 Verification Pacer Detect 1 Setthe Pacer Enhancement feature on in the Setup menu 2 Setthe ECG simulator to Ventricular Pacer 3 Verify the pacer pulse yellow line is displayed before the R wave of the QRS signal Patient ADT Monitor Setup Printer Setup _ Parameters Functions 4 22 99 ORE Message Area A EE HR i i E c BPM j 3 i G Lf Source R 4 s Lead mm i i i I 0 2 i i v2 0 1 v3 0 3 Insp Exp ce ae 3 8 mmHg CO2 14 bpm Spo2 PR P 2 97 81 bpm T TH Sys Dia Sys Dia E P i 36 7 i 125 82 1 0 80
30. All these devices are a special type which feature very high isolation voltage Data is sent from the main part of the Passport 2 CPU to the Front End Module It is inverted twice by U100 and then buffered by Q2 so that it is capable of driving the LED portion of optocoupler U231 The current applied to U231 is set by R47 Note that the power for these devices is obtained from the non isolated main 5V The output side of 0231 is connected to the isolated circuitry Data at a 5 5V pullup level IRXD is obtained by the use of pullup resistor R346 This data is connected to the UART receive data input of the microcontroller through a translation buffer The communication from the Front End Module to the CPU is very similar The microcontroller s UART transmit data output switches driver transistor Q204 which performs an inversion while driving the LED portion of optocoupler U230 with the current being set by R328 These components operate from the isolated 5 5V rails Note that this supply is used to power the LED so that the current pulses do not create noise on the 3 3VD and 5 rails The output of the optocoupler is connected to the non isolated circuits where with the assistance of pullup resistor R48 a 5V CMOS level signal is obtained A transmit data enable signal is applied to Q206 so that it may drive the LED portion of optocoupler U232 with the current being set by R354 The output of the optocoupler is furnished with pullup res
31. N REF REF ALIGN HOLE IN BRACKET WITH HOLE IN HOUSIN 8 FOR LITHIUM ION ONL LEANSURFACE OF HOUSING gt LETDR THEN REMO A LINER FROM CLAMP AND INSTALL LITHIUM ION NTO HOUSING EATTERY HOLDEI LOCATE CABLE CLAMI AS SHOWN OPENING THS SIDE ATTACH CONNECTORPART F ITEM 38 TO 2 OF ITEM 2 ROUTE CABLE THRU CABLE CLAMP AS SHOWN CONNECT TO POWER SUPPLY FIGURE 5 2 Rear Panel Assembly Lithium lon battery configuration 5 10 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Parts List Front Housing Use In P N 0998 00 0170 XXXXX MASIMO SPO2 NELLCOR SPO2 J I iy a2 A 11 NA iy 40 42 T 40 ue B ud COMI il S SS EU 32 d dn 1 es 5x x 4 NI 3PLACES 29 N E gt P 4 Z 36 4 56 I 3 PLACES ON 94 6 4 290 2 p xe cA gt m 3 PLACES Wi er 36 Cn 3 gt KOJN NEL i n 9 D SS 4 E PES N T P _ Ie ng f 7 a LN TO FRONT Js 67 2PLACES 25 ASSEMBLY M Ro 2 13 3 13 2 REMOVE POLARIZING KEY TO FRONT ASSEMBLY 27 8 PLACES Ka m A 27 8 PLACES 4 18 186 TO NIBP ISO VIEW EXPLODED ISO VIEW EXPLODED SCALE
32. PART NUMBER LENGTH 0012 00 0994 01 10 feet 0012 00 0994 02 25 feet 0012 00 0994 03 50 feet 0012 00 0994 04 75 feet DBI SHD See CONMECTOR ERE DB15 HD MALE LO CETUR MALE i LENGTH E 3 12 0070 10 0441 Passport 2 Passport 2 Service Manual Repair Information ECG Cable ESIS and Non ESIS PART NUMBER 0012 00 1255 01 Disassembly Instructions LENGTH AND DESCRIPTION 10 feet Straight Non ESIS 0012 00 1255 02 20 feet Straight Non ESIS 0012 00 1255 03 10 feet Rt Angle Non ESIS 0012 00 1255 04 20 feet Rt Angle Non ESIS 0012 00 1255 05 10 feet Straight ESIS 0012 00 1255 06 20 feet Straight ESIS 0012 00 1255 07 10 feet Rt Angle ESIS 0012 00 1255 08 20 feet Rt Angle ESIS LEAD ANSI AAMI ECS3 1995 STANDARD COLOR N T 3 O Opposite Side IEC CONVE white f brown red white gt green red yellow black black green E INTIONAL STANDARD COLOR Brown White Red USE LUDLOW CONNECTOR 22 STRAIGHT FOR 01 02 05 06 L 4 USE LUDLOW CONNECTOR 95 RIGHT ANGLE FOR 03 04 07 08 1 38 10 E s 10 amp 5 1W 5 Resistor in Connector brown V 4
33. PIC16 processor during an emergency shutdown The 12V supply is also used to generate separate high tolerance 5 volt analog voltages 5 and 5 for powering the two pressure transducer circuits Each of these 5V voltages are generated using Maxim MAX6250 5V references U3 amp U15 A5V is used for the measurement channel pressure transducer and AD7714 ADC analog supply and a divided version is used for the device reference A5V is also used to power the linear valve opamp control circuit 5 is used as the PIC16 and HC16Z1 reference voltages and the over pressure transducer supply In addition T5V is used as the HC16Z1 analog supply voltage VDDA Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 27 NIBP Module P N 0997 00 0501 Theory of Operation 2 4 14 2 28 Host Reset The signal from J1 allows the host to reset the main processor HC16Z1 on the NOR gate 014 inverts the signal and the Q7 FET pulls RST low when MODRESET is activated RST is pulled up by R17 This resistor s value was chosen in order to meet the RST timing requirements of the HC16Z1 If the RST rise time is too slow the HC16Z1 will assume there is an external reset and repeatedly drive RST low itself This rise time is governed by the capacitive loads on RST as well VPP is pulled up to by R44 during normal device operation which activates the PIC16 power on reset NOTE R
34. contact line voltage Communication Isolation The communication between the front end module and the host must be isolated to the same degree as the power supply The communications consist of an asynchronous bidirectional serial data stream at 500 k baud Since these signals are all digital the isolation is performed with optocouplers All these devices are a special type which feature very high isolation voltage Data Acquisition The various signal processing blocks such as IBP etc generate both analog waveform and digital status signals The purpose of the data acquisition system is to capture these signals and to format them into a data stream suitable for transmission through the communication isolation circuits The system consists of a multiplexed analog to digital converter a single chip microcontroller and some digital level shifters The microcontroller serves the additional purpose of interpreting commands received from the host 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation Front End Module 2 2 4 Analog to Digital Converter The MAX147 ADC is operated in the single ended bipolar mode with external clock The control byte sent to the converter by the QSPI is 1 where mm is the ADC multiplexer channel Since the entire analog signal path is floated on the 42 5 volt reference the ADC analog common is referenced to this voltage also The ADC therefore produces signe
35. from U9 and ties the input of U9 to the voltage across R63 which is setup by the voltage divider of R60 R62 and R63 In this configuration J and J7 are unjumpered To obtain a 50 duty cycle 16 and J8 are jumpered JZ is unjumpered The combination of R59 and C12 produces the 5076 duty cycle To obtain a 7576 duty cycle J7 and J8 are jumpered J is unjumpered The combination of R61 and C12 produces 75 duty cycle The output of the monostable timer is used to drive a buffer with a 3 state output which is controlled by VIDPWR In order to satisfy the input requirements of the buffer U9 the output of the monostable timer is stepped down by R62 and R63 for 50 and 75 duty cycles For the 100 duty cycle the monostable timer is disabled and the input to U9 is stepped down by R60 R62 R63 and 12V2 When VIDPWR is low 09 is turned on providing the gate voltage to Q1 Q1 turns on essentially shorting the gate on Q2 to ground This turns on Q2 providing current to flow to the control pin of the inverter VCONT R34 and C 6 were chosen to keep the Passport 2 CPU clock frequency 45 MHz from contaminating the VCONT signal and to permit a return to 12V RET for the inverter frequency 41 KHz R34 also provides a ground loop between 3VGND VIDPWR and 12 RET VCONT When VIDPWR is high there is no output U9 R64 and 65 sustain the supply voltage for 09 as the input on U9 changes from high to low and low to high C
36. half duplex 100 Mbps operation 2 1 4 Power On Reset U14 The Power On reset signal is created by components U14 R1 R12 R13 and GA The active low power on reset signal required by the MPC860T as well as other components that require reset is generated for both logic voltages 5V and 3 3V This keeps the CPU in reset until the power for all the digital components are above minimum operating levels The reset signal PORESET is distributed in a spoke pattern with the following references PORESET POREST2 PORESET3 PORESETA PORESET5 The duration of the power on reset signal is 140ms min The MPC860T requires only 3us minimum after power is stable and all other components that receive this reset require less than 1ms 2 1 5 Flash Memory 03 04 05 06 0180 0181 0182 0183 Program code is stored in eight flash memory devices configured as 2M x 32 bytes in 2 banks for a total of 16 Mbytes These devices allow for in circuit programming via the MPC860T background debug mode BDM There no special programming voltages programming is done using the existing 3 3Volts This is one way to allow for initial factory programming as well as software upgrades Alternately a boot loader can be programmed into the flash parts using the BDM and the initial software and all upgrades can be programmed into the flash by the boot loader from a PCMCIA memory card The Flash devices are configured and connected to the processor in th
37. impedance The baseline impedance measured at the patient has a typical value of 500 ohms and may reach 2000 ohms However when AAMI connector ECG cables are used the cable contains 1000 ohm resistors in series with each leadwire Since the respiration is measured through a pair of leadwires 2000 ohms are added to the patient impedance When the connector board is equipped with additional defibrillation protection provisions series ECG resistors and high voltage respiration coupling capacitors the front end board can be used with resistor less ECG cables Therefore the total range of baseline impedance ranges from somewhat less than 500 to 4000 ohms Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 17 Front End Module 2 2 12 Theory of Operation The respiration signal is isolated from the baseline by a fixed analog highpass filter at 0 1 Hz and a lowpass at about 3 Hz The signal is amplified and acquired by channel 3 of the 147 ADC Although the QSPI scans all channels every 2 ms the respiration is to be sampled at only 100 Hz Therefore the data processing software takes data from the QSPI buffer in only 1 out of every 5 scans The highpass filter is equipped with a reset function activated by a control line in Port A The respiration reset is controlled in a manner similar to the ECG reset in that it is activated whenever the respiration signal appears stuck offscale and must remain asserted for a settling period a
38. inputs This signal is used as a back door verification of the T5V reference voltage Since 25VR is generated from a separate supply than T5V and since T5V is also used as the ADC reference voltage if the T5V reference voltage were to fail the ADC would read full scale when comparing 25VR to the ADC reference T5V The AT90S4433 device includes a brown out reset circuit which guarantees the device is reset when VCC is below 4 0V 0 2V This brown out reset is required since the AT90S4433 is not connected to the HC16Z1 RST Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 51 Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 2 15 13 2 15 14 2 15 15 2 52 To increase the reliability of the 9054433 device s function as an over pressure detector sleep mode will not be utilized This prevents the possibility of the part becoming stuck in the sleep state Memory Flash Memory U7 The program code will be stored in Atmel ATA9F4096A memory The flash device specified has the boot sector located at the bottom of the memory map at address 00000H where the HC16Z1 expects to find the reset vectors Although the flash device requires additional power with CE tied low this prevents the need for decoding logic where board real estate is limited Besides storing program code other unprotected sectors of the flash memory may be used to store less critical nonvolatile data if required This w
39. of 93 Passport 2 Passport 2 LT Service Manual 0070 10 0441 7 5 Recorder Paper Replacement Preventive Maintenance 7 12 Recorder Paper Replacement The instructions below describe the replacement of recorder paper For best results use only the specified recorder paper in your Passport 2 Monitor 1 Open the recorder door by pressing the door release button in the upper right corner of the recorder NOTE If the recorder s door does not open fully carefully pull down on door until it is completely open 2 Remove the empty paper spool by pulling it out gently 3 Insert a new roll of paper between the two rounded tabs of the paper holder with the coated shiny side of the paper facing the print head at the top of the recorder the paper should be feeding off of the bottom of the roll 4 Unroll approximately 4 inches of paper 5 Align the paper across the top the metal bar 6 Holding the paper in place close the recorder door 7 ensure that the paper is aligned properly and has not been pinched in the door pull the loose end of the paper out several inches If the paper jams open the door and return to step 5 7 13 Care and Storage of Thermal Chart Paper Thermal Chart Paper is chemically treated and the permanency of a recording is affected by storage and handling conditions These conditions are 1 Ultraviolet Light We recommend storing the recordings in a filing cabinet within a few days of printing L
40. of each signal will be more fully described in the discussion of the individual signal processing circuits Each pin can be individually configured as an input or output Software performs this configuration during initialization and no subsequent changes are made during operation Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 15 Front End Module Theory of Operation 2 2 8 Signal Acquisition ECG The ECG signal acquisition consists of three differential amplifier channels which can be configured to support either 3 lead or 5 lead operation These are connected to channels O through 2 of the MAX147 ADC In the 5 lead mode a dedicated electrode RL is used for patient drive This allows all of the remaining electrodes RA LA LL and C to be used for signal acquisition There are 7 standard vectors leads which can be obtained simultaneously from these electrodes However these vectors contain much redundant information In fact only 3 channels of data are required to allow derivation of any or all of the 7 standard vectors The module bus therefore caries only lead Lead and V as the requisite data channels In three lead mode only three electrodes are attached to the patient Further one of these electrodes must be used for the patient drive precluding its use for signal acquisition Therefore only vectors Lead Lead and Lead lll are available with only a single vector being available at a time Two
41. or hospital administration practice Passport 28 Passport 2 LT Service Manual 0070 10 0441 7 3 Care And Cleaning Of The Monitor Preventive Maintenance 7 7 8 7 9 And Cleaning Of The Monitor The monitor enclosure may be cleaned with a mild soap and water solution isopropyl alcohol 10 bleach and water solution or ammoniated window cleaner Apply cleaning solution to the cloth not directly onto the monitor DO NOT apply large amounts of liquid DO NOT use abrasive cleaning agents or organic solvents WARNING Do not clean the monitor while it is on and or plugged in To prevent scratches on the front panel display screen blow or carefully brush dust and dirt particles with a soft sponge moistened with cleaner solution or a fine soft hair brush DO NOT use abrasive cleaning materials Fingerprints and stains may be removed by using a liquid lens cleaner and a soft cloth DO NOT wipe a dry screen or use alcohol or chlorinated hydrocarbon solvents Care and Cleaning of SpO Sensor NOTE Refer to the individual instruction sheets packaged with each sensor Check sensors and cables for wear or damage daily Replace as required Check for proper operation of the spring mechanism on reusable adult sensors Sensors should be cleaned before and after use on each patient Pon Clean and disinfect the sensors by wiping the patient contact area with a soft cloth dampened with a mild soap and water solution or i
42. outputs are turned On Off via a logic signal REMOTE ON Two independent multi chemistry battery chargers are included in the power supply The chargers are capable of rapid charging up to two Sealed Lead Acid or Lithium lon batteries The chargers will be activated when AC or DS DC power is applied The power supply constantly monitors various available power sources which are selected in the following priority order 1 DS DC 2 BATTERY The total off stote current from both batteries must be less than 5 mA During Battery operation the BATT OP output signal is set to logic 0 Otherwise BATT OP is a logic E When operating on battery power each battery will share the total load based on its individual charge level The transfer from one source to another is seamless and occurs when the source providing power is either disconnected or out of range An AC PRESENT output signal that can drive an external LED at 10 indicates the presence of AC power When AC power is applied this output signal has an open circuit voltage of 20Vdc 15 with output equivalent impedance of 1 8kQ 10 When AC power is not present the AC PRESENT output signal is OV The power supply includes two independent chargers that are capable of charging 2 Lithium lon Li ion batteries P N 0146 00 0069 2 Sealed Lead Acid SLA batteries P N 0146 00 0043 The chargers are enabled upon application of AC or DS DC power and
43. per second At the conclusion of the measurement a dump valve is opened by the software which allows the cuff pressure to rapidly bleed down to atmosphere separate Atmel AVR microcontroller AT90S4433 8AC and Fujikura XFPM O50KPG BP3 pressure transducer are used to monitor the cuff pressure redundantly for safety purposes This document describes the details of the actual design implementation developed to meet the requirements set forth in the module requirements document It provides theory of operation and internal specification of this implementation Pneumatic System Control The pneumatic control consists of a pressure transducer ADC microcontroller DAC and drive circuitry This circuitry controls a pump a dump valve and a linear valve The pneumatics can also be disengaged by the over pressure detection circuitry See section 2 15 8 The pump is used to inflate the cuff at the beginning of each measurement cycle Inflation pressure is regulated by the HC16Z1 software monitoring the pressure transducer signal from PT via the AD7714 ADC During the pump up phase the dump valve is closed and linear valve V2 is modulated At the onset of the actual measurement phase the linear valve is controlled to provide a gradual reduction of the cuff pressure The HC16Z1 software maintains the pressure bleed rate at a nominal mmHg per second regardless of the cuff pressure or system volume During the measurement phase the pres
44. processor 010 software tracking can be off as much as 67 5mV 3 6 or 69 93mV 5 62mmHg The transducer is not inserted until the end of the manufacturing and cleaning processes avoiding exposure to moisture which may effect its performance but will be soldered in place after final assembly 12VSW Circuitry Q1 Q2 Disabling the pump 1 and valves V1 and V2 is accomplished by cutting power to these devices using a switched version of 12V2 12VSW This is done via the secondary microcontroller s 12VEN signal which controls Q1 The 12VEN signal turns the NPN transistor Q1 on which allows current to flow through R36 and into the 1 collector The voltage developed R36 turns on Q2 a P channel FET with high current capability supplying power to the pump and valves Primary Microcontroller U10 The NIBP PCB utilizes a Motorola MC68HC16Z1CPV16 microcontroller This specifies 5V 16 78MHz commercial temperature range part in a 144 pin TQFP package This processor is responsible for controlling a pump and two valves in the generation of the patient pressure signal This data is processed by the HC16Z1 and fed to the host via an RS 485 interface through the processor s SCI port A 32 768kHz crystal is used for the HC16Z1 reference oscillator circuit The HC16Z1 SYNCR clock synthesizer control register will be set with X21 W 0 and 60 This produces a nominal system clock frequency of 15 99MHz The 32 768kHz crystal is
45. set International 0012 00 1261 06 40 snap lead set International 0012 00 1261 07 18 snap lead set USA 0012 00 1261 08 24 snap lead set USA 0012 00 1261 09 40 snap lead set USA 0012 00 1261 10 18 snap lead set International 0012 00 1261 11 24 snap lead set International 0012 00 1261 12 40 snap lead set International 0012 00 1261 13 3 40 2 60 snap lead set USA 0012 00 1261 14 3 40 2 60 snap lead set International LEAD PATIENT END CONNECTOR 174 SEI TERMINATION 5 Lead USA 3 Lead USA L 1 00 L 1 00 Ee mE pu suonen 20 5 Lead International 3 Lead International L a7 1 00 A L 1 00 3 16 0070 10 0441 Passport 2 Passport 2 Service Manual Repair Information Disassembly Instructions ECG Shielded Lead Wires PART NUMBER 0012 00 1262 01 LENGTH AND DESCRIPTION 18 pinch 5 lead set USA 0012 00 1262 02 24 pinch 5 lead set USA 0012 00 1262 03 40 pinch 5 lead set USA 0012 00 1262 04 18 pinch 5 lead set International 0012 00 1262 05 24 pinch 5 lead set International 0012 00 1262 06 40 pinch 5 lead set International 0012 00 1262 07 18 pinch 3 lead set USA 0012 00 1262 08 24 pinch 3 lead set USA 0012 00 1262 09 40 pinch 3 lead set USA 0012 00 1262 10 18 pinch 3 lead set International 0012 00 1262 11 24 pinch 3 lead set International 0012 00 1262 12
46. the main board Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 29 Patient Connector Board AAMI Theory of Operation 2 5 7 2 5 8 2 30 0670 00 0682 01 This module is responsible for acquisition of most of the patient safety isolated signals namely the ECG Temperature and two channels of Invasive Blood Pressure connectors IBP1 and IBP2 The Connector board collects all of the individual patient cables into a single ribbon cable then passes the signals to the main board 0670 00 0682 02 This module is responsible for acquisition of the patient safety signals namely the ECG and the Temperature This module is without the dual 6 pin connectors for the IBP The Connector board collects all of the individual patient cables into a single ribbon cable then passes the signals to the main board 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 6 2 6 1 2 6 2 2 6 3 2 6 4 2 6 5 2 6 6 Patient Connector Board H P Patient Connector Board H P The ECM Patient Connector board is intended for use with cables having integral 1k resistors which eliminate the possibility of harmful arc over at the connector pins during defibrillation Spark Gap Suppressor The patient cable is attached to the patient connector board The clamping of defibrillator transients consisting of a neon bulb with each electrode circuit which clamps the peak voltage with respect to isolated ground i
47. the test result on the local printer 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure Verification 6 5 Verification 6 5 1 Initial Set up 1 Using a patient simulator connect the 2 and temperature cables to the 2 left side connector panel Set the ECG simulator for 60 bpms 1mv GRS signal Set up the Passport 2 as follows Patient Menu Adult mode patient size Monitor Setup a Display Setup 3 Waveforms 6 Waveforms 12Leads b ECG Speed 25 mm sec c Speed 25mm sec optional d Respiration Gas Speed 12 5 mm sec Print Setup a Waveform 1 ECG 1 b Waveform 2 ECG 2 c Select Printer Local Parameters a ECG ECG Il ECG 2 1 ECG 3 Ill ECG 1 through 6 Size 1cm mV 12 Lead Page 1 1 1 ECG 2 1 ECG 3 Ill ECG 4 AVR ECG 5 AVL AVF 12 Lead Page 2 1 VI ECG 2 V2 3 V3 ECG 4 VA 5 5 V Passport 2 Passport 2 LT Service Manual 0070 10 0441 6 17 Verification 6 5 2 6 5 2 1 6 5 2 2 NIBP Set Start Pressure 180 mmHg Interval 5 minutes IBP1 Scale O to 160mmHg IBP2 Scale 8 SpO2 Averaging mode 2 Sensor Off Audio off CO optional Apnea Delay 30 Scale 40 mmHg Respiration Resp lead Il Apnea Delay 30 Resp source Auto Scale 3 Gases optional Select agent Auto scale
48. voltage is guaranteed while the device is out of reset The flash is also reset by RST which prevents spurious flash writes during power cycling 2 15 18 Host Reset The MODRESET signal from J1 allows the host to reset the main processor HC16Z1 on the PCB A NOR gate U14 inverts the signal and the Q7 FET pulls RST low when MODRESET is activated RST is pulled up by R17 This resistor s value was chosen in order to meet the RST timing requirements of the HC16Z1 If the RST rise time is too slow the HC16Z1 will assume there is an external reset and repeatedly drive RST low itself This rise time is governed by the capacitive loads on RST as well Note RST is not connected to the AT90S4433 reset PROGRAM Y in order to prevent an HC16Z1 reset from bringing out of the emergency shutdown state Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 53 SpO Interface Board Nellcor Nell 3 and Masimo Theory of Operation 2 16 2 54 SpO Interface Board Nellcor Nell 3 Masimo The SpO Interface board provides the communications path for the two way data flow between the SpO modules and the Passport 2 CPU Control Module The module analyzes the analog input from the SpO2 sensor and outputs the data in digital format via a serial digital interface The SpO Interface board addresses the different power requirements as well as the different connector pin assignments for each of the th
49. which is not used The universal programmable machines are flexible interfaces that connect to a wide range of memory devices such as Fast Page Mode Dram s At the heart of the UPM is an internal memory RAM that specifies the logical value driven on the external memory controller pins for each clock cycle Each word in the RAM array provides bits that allow a memory access to be controlled with a resolution of one quarter of the external bus clock period on the byte select and chip select lines The RAM array contains 64 32 bit words The internal signal timing generator loads the RAM word from the RAM array to drive the general purpose lines byte selects and chip selects The UPM RAM array is to be loaded by the board support software at power on The following is UPM RAM array values to support 5Onsec Fast Page Mode DRAM with the processor operating at SOMHz UPMA Initializations for 5 DRAM s 50Mhz RTC with CPU Supervisor The Real Time Clock module BQ4847 integrates a time of day clock a 100 year calendar a CPU supervisor a battery and a crystal in a 28 pin DIP module There are 16 registers which contain real time clock and alarm functions The clock has an accuracy of 1 minute per month The duration of the power on reset signal is 100ms min The MPC860T requires only 3us minimum Using the 04747 CE out and battery voltage out Vout static RAM U9 is made to be non volatile The internal battery powers the
50. white RA 1 LL 3 red 2 black RL 5 green SHIELD e 6 Non ESIS 5X IkQ IW 5 6 X 100mH Choke Resistor in in Yoke Connector brown V white RA red LL black LA green RL SHIELD e ESIS Q Passport 2 Passport 2 LT Service Manual 0070 10 0441 Disassembly Instructions Repair Information Panorama Mobility Cable ESIS and Non ESIS P N 0012 00 1502 XX DESCRIPTION DASH Non ESIS 10 USA 01 Non ESIS 20 USA 02 ESIS 10 USA 03 ESIS 20 USA 04 Non ESIS 10 International 05 Non ESIS 20 International 06 ESIS 10 International 07 ESIS 20 International 08 F qa nm T ge CONNECTOR SHIELD ii RESISTORS INSTRUMENT POSITIONS POSITIONS M CONNECTOR POSITIONS POSITIONS o 50 aeg O E RUN o so OE GE 529 s Vieng qu UO en O B LAL 8 3 O C LUF 8 30 O c LUF it 1 1 20 A RA R 1 20 O A RAP 6 D 0 CE e D V C F E E A E Non ESIS ESIS FIGURE 3 2 Panorama Mobility Cable ESIS and Non ESIS ANSI AAMI EC53 1995 IEC CONVENTIONAL STANDARD
51. with all requests for service Any questions regarding the warranty should be directed to the closest authorized location A list of international offices along with their phone numbers is provided at the end of this manual Passport 28 Passport 2 LT Service Manval 0070 10 0441 2 2 References 7 15 Preventive Maintenance References The following bibliography provides several articles and books of interest on pulse oximetry and issues affecting SpO2 accuracy carboxyhemoglobin methemoglobin yes variation in calibration of algorithms between manufacturers and excessive sensor pressure Recommendations for Human Blood Pressure Determination by Sphygmomanometers American Heart Association Adams Jose A M D Respiratory Monitoring in Infants and Newborns The Journal for Respiratory Care Practitioners Clancy Fred Factors Affecting Correlation Between Direct and Indirect Arterial Blood Pressure Measurements Journal of Clinical Engineering 3 49 1978 Hazard of Automatic Non Invasive Blood Pressure Monitoring Anesthesiology 55 717 718 1981 Sy W P Ulnar Nerve Palsy Possibly Related to Use of Automatically Cycled Blood Pressure Cuff Anesthesia and Analgesia 60 687 688 September 1981 Harrison G Roth and E Hines Bilateral Indirect and Direct Arterial Pressure Circulation 22 419 September 1960 Harrington D Disparities Between Direct and Indirect Arterial Systolic Blood Pressure Measureme
52. 0 1231 15 NIBP Module Assembly 0670 00 0746 01 15 NIBP Module Assembly 0670 00 0798 01 16 Pump Assembly w cable NIBP 0012 00 1249 17 NIBP Pump Bracket 0406 00 0750 18 Cable Assembly NIBP to Main CPU Bd 0012 00 1211 19 Cover Power Supply with DC connector 0198 00 0028 19 Cover Power Supply w o DC connector 0198 00 0050 20 Battery Door 0380 00 0349 21 Grounding bracket strap metal 0346 00 0044 21 Grounding bracket strap plastic 0346 00 0049 22 Snap Cover Blank 0198 00 0027 23 Screw Pan Hd 6 32 x 5 16 0212 12 0605 24 Screw Pan Hd 6 32 x 7 16 0212 12 0607 25 Screw Pan Hd 4 40 x 3 16 0212 12 0404 25 Screw Pan Hd 4 40 x 3 16 0212 12 0403 26 Screw Pan Hd 4 40 x 11 16 0212 12 0412 27 Screw Pan Hd 4 40 x 11 16 0212 12 0407 28 Screw Pan Hd 4 40 x 3 16 0212 12 0603 N A Not available Passport 2 Passport 2 LT Service Manual 0070 10 0441 Parts List Rear Housing ITEM NO DESCRIPTION Replacement Parts PART NUMBER 29 Screw Pan Hd 4 40 x 1 2 0212 10 0408 30 PCB Nellcor SpO2 Module with OxiSmart 0671 00 0162 30 PCB Nellcor SpO Module with Oximax Nell3 0671 00 0066 31 Nellcor Interface 0670 00 0696 31 SPO Interface Board 0670 00 0785 01 02 or 03 32 Cable Nellcor Interface to Main CPU Board 0012 00 1233 32 Cable Interface to Main CPU Board for 0012 00 1596 0998 00 0900 XXXX 33 Cable Asse
53. 040 00 0361 01 23 Solenoid Valve P N 0992 00 0155 01 Recorder Interface Recorder Board AR 42 interface RR 0670 00 0695 50 PIN 00124001200 JZ P4 P N0670 00 1153 J2 P4 XE 50 Recorder AR42 Recorder P N 0683 00 0501 01 P N 0683 00 0465 01 Connect to J8 MR Recorder J15 P N 0161 00 0024 z PCMCIA Dual PCMCIA D St Slot A DPD Interface Cable Fan Bum Card J14 P N 0012 00 1301 01 0012 00 1622 01 PIN 0380 00 0372 SlotB e DPDDefib Y gt On Off Section N Switch 0012 00 1231 113 co2 J24 J 23 Defb J12 Sync Power CPU Board Assembly Supply P N 0670 00 0674 01 J22 02 Color MC Display IABP b 03 EL Display Out is 04 Passive Display Control Cable from Li lon P N 0670 00 0739 01 12Lead Option TFT Only Battery Holder to 0014 00 0251 Power Supply Connect to J12 IABP Interface Cable ECG ONLY P N 0012 00 1459 01 Use only with CPU Bd wuipotential Pond P N 0670 00 0739 03 or higher 2 Line Cord P N 0012 25 0001 ECG IBP P N 0012 00 1650 01 Use only with CPU Bd PIN 0670 00 0782 XX Power Supply P N 0014 00 0250 or P N 0014 00 0251 Lith lo
54. 12 is a complete general MIDI wave table synthesizer on a single integrated circuit The MIDI interpreter synthesis engine effects processing and all memory are included on chip The device receives a standard serial MIDI data stream at 31 25 1 kbits s and outputs a stereo 16 bit digital audio stream at 44 1kHz Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 5 CPU Control Module 2 1 11 Theory of Operation The digital outputs and SOUT from the U12 provide the clock and the digital audio data input to the stereo D A converter This is a complete stereo digital to analog system including digital interpolation 128X third order delta sigma D A conversion digital de emphasis and analog filtering The de emphasis circuit is not used in this application The stereo outputs from the U27 are summed together and is fed to the power amplifier U13 which is a bridge connected audio power amplifier capable of delivering 1wott of continuous average power to an 8 ohm speaker load The circuit is optimized for a frequency range of 100Hz to 10 2 Module ID U44 There is a Module ID port implemented by U44 that is used to read the ID code from any device that is connected to Docking connector J9 These devices can be either a Base Station or Comm Ports Each of these devices has a unique code The base station is hot swappable while the Comm Ports are not hot swappable When any base station is connected or removed fro
55. 18 v P N 0012 00 1261 10 gt 5 Lead Wire Set International 18 P N 0012 00 1261 04 Note Refer to the Pressure Transducer Manufacturer for the proper IBP Instrument Cable Passport 2 Passport 2 LT Service Manual 0070 10 0441 Safety Precautions Repair Information This page intentionally left blank 3 6 0070 10 0441 Passport 2 Passport 2 LT Service Manual Repair Information Troubleshooting Guidelines 3 5 Troubleshooting Guidelines Identify the problem Due to the wide variety of potential symptoms certain problems may be more subtle than others One approach to trouble shooting is to set up the instrument as described in Chapter 7 Following the guidelines of the tests will help determine the problem if one exists Avoid shorting component leads together During repair procedures it can become tempting to make a series of quick measurements Always turn the power off before connecting and disconnecting the test leads and probes The accidental shorting of leads can easily stress the components and cause a second failure aside from the safety risk Use the Proper equipment This equipment listed below is suggested to fulfill a wide range of troubleshooting requirements It is imperative to use the designated equipment in order to ensure proper results of any and all test procedures Clean up the repair area After any repair especially after any soldering or desoldering
56. 2 94 Interval ET 13 min Message Area B Expanded View with Pacer Enhancement On FIGURE 6 19 Heart Rate 1 Setthe simulator to QRS waveform Set the rate to 251 bpm 2 Verify the Rate display is 251 x 5 bpm 3 Decrease the rate to 30 bpm and allow signal to stabilize Verify that the rate display is 30 bpm x 3 bpm Passport 2 Passport 2 LT Service Manual 0070 10 0441 Verification 6 5 2 5 6 5 3 6 5 4 6 5 5 6 20 Calibration Procedure Alarms Set the simulator to 1mv ECG QRS signal rate set to 60 bpm Set the Passport 2 to Print on Alarm install paper in the recorder and set the Low HR alarm to 50 bpm and Hi alarm to 120 bpm Increase the HR to 125 and verify the following The high alarm violates with an audio tone and red led active on keypad The recorder is initiated and prints the ECG strip showing the ECG information Measure the Grid and verify the overall width of 40 mm x 2 cm Mute the alarm by pressing the MUTE ALL key Verify that the mute alarms message is displayed in the Message Area A and the alarm is silent Press the MARK EVENT key Press the TREND key and examine the trend data The high HR rate should be red LCD or normal brightness EL indicating the High HR was violated IBP 1 and IBP 2 Verification Set the simulator to O mmHg for both IBP 1 and IBP2 Press the ZERO ALL key Verify the Systolic diastolic and mean displays
57. 2 Service Manual so Replacement Parts 5 1 Parts List Front Housing 5 5 5 2 Parts List Rear Housing 5 15 5 3 Communication Ports Parts List 2 25 Passport 2 Passport 2 LT Service Manual 0070 10 0441 IN 5 ft Y eR 6B FRONT ISO VIEW EXPLODED EE CLEAN HOUSINC SOPROP LET DR THE F T IN ECESSED Replacement Parts NEC TFT LCD Display Assembly amp Monochrome Display pU SERIAL NUMBER LABEL EN LOCATE APPROX ED WITH 3 22 PLACE F lt ITE a 54 LE CLAMP a S M B 58 eo EXPLODED REAR ISO VIEW 7557 N 4 PLACES EF Isometric Drawing 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts 28 R F REF m ee CH 6B gt 1 4 START KEYPAD INSTALLATION gt 715 ENCODER
58. 22 Screw Pan Hd 4 40 x 0212 12 0404 23 Screw Flat Hd 4 40 x 0212 14 0404 24 Screw Flat Hd 4 40 x 0212 14 0408 25 Washer flat 4 0221 00 0004 26 Gasket 0348 00 0204 27 N A 28 Bracket 0406 00 0794 29 Bracket Cable Retainer 0406 00 0795 30 Mount Rail LCD Left side 0436 00 0178 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Parts List Front Housing Replacement Parts ITEM NO DESCRIPTION PART NO 31 Mount Rail LCD Right side 0436 00 0177 32 Washer flat large 2 required 0210 10 0004 33 Ferrite Split Flat Cable 0108 00 0097 01 34 Stand Off Hex M F 4 40 X 0 312 Long 0361 30 0312 35 Screw Flat Head 100 4 40 X 0 187 Long 0212 17 0403 36 Strap Ground 0346 00 0046 02 37 Retainer Cable 0380 00 0375 38 Clip Ferrite 0344 00 0246 39 Mount Rail EL Left Side 0436 00 0139 40 Rubber Retainer 0354 00 0081 41 Backlite Assembly 0149 00 0009 42 PCB Interconnect Panel Bd EL 0670 00 0714 A3 Screw pan head cross recessed 4 40x 1 8 0212 12 0402 44 PCB Interconnect Panel Bd Passive Display 0670 00 1137 45 Cable Assembly 14 pin Passive Display 0012 00 1358 46 Display 10 4 Passive Color Passive Display 0160 00 0058 47 Cable Assembly 15 pin Passive Display 0012 00 1359 48 Bracket Inverter Board Passive Display 0406 00 0790 49 Bracket Choke Mounting Passive Display 0406 00 0791 50
59. 26 25 Connector shield Cable shield P2 GND TIP RSVd RING SYNC SLV Passport 2 Passport 2 LT Service Manual 0070 10 0441 Disassembly Instructions Repair Information 12 Lead PCMCIA Card and Cable Assembly P N 0992 00 0155 01 P N 0996 00 0065 01 12 Lead Processor Card P N 0040 00 0324 12 Lead Cable Assembly Kit P N 0380 00 0398 Cover Ecg Processor Card 12 Lead P N 0212 12 0203 Screws Pan Head 2 x 3 16 Quantity 2 req P N 0380 00 0397 Extender Cover Ecg Processor Card 12 Lead P N 0012 00 1441 02 Cable Assembly Lead Set 12 Lead AAMI ANSI Cable Assembly Lead Set 12 Lead 4 IEC International gt 9 Z 0070 10 0441 Passport 2 Passport 2 Service Manual zo Assembly and Schematic Diagrams Detail Parts Lists Assembly and Schematic Drawings are available upon request Contact Customer Service 1 800 288 2121 x7130 Detail Parts Lists Assembly and Schematic Drawings Part Number 0070 00 044 1 01 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Assembly and Schematic Diagrams Lead Wire Set P N 0012 00 1411 02 Domestic and P N 0012 00 1411 03 International 112 Lead Card and Cable Assembly Co2 Module P N 0671 00 0164 03 ua Pump qd 608MHz Radio Assembly Optical Bench y P N 0
60. 41 5 13 Parts List Front Housing Replacement Parts This page intentionally left blank 5 14 0070 10 0441 Passport 2 Passport 2 LT Service Manual Replacement Parts Parts List Rear Housing 5 2 Parts List Rear Housing ITEM NO DESCRIPTION PART NUMBER l Rear Housing Assembly S N TM06075 G3 or higher 0380 00 0339 01 1 Rear Housing Assembly for 0683 00 0501 01 recorders 0380 00 0339 02 1 Rear Housing Assembly for 0161 00 0024 recorders 0380 00 0339 07 2 Foot 0348 00 0190 3 Handle 0367 00 0061 4 Pin Handle 2 required 0226 00 0017 5 Cover Docking Connector 0198 00 0037 Recorder Mount Bracket AR 42 0406 00 0741 Bracket Recorder Mount XE 50 0406 00 0745 7 PCB Recorder Interface Board AR 42 0670 00 0695 7 PCB Recorder Interface Board XE 50 0670 00 1153 8 Batteries 12 Volt Sealed Lead Acid 0146 00 0043 9 Fitting NIBP Connector 0103 00 0503 10 Fan w cable assembly 9 89 CFM 0012 00 1622 01 10a Screw Pan Hd 6 32 x 9 16 0212 12 0609 11 Shield Ground Plate 0386 00 0243 12a PCB Main CPU Board 12 lead option 0670 00 0739 01 S N CM 20000 1000 or higher 12b PCB Main CPU Board 12 lead option 0670 00 0739 03 12c PCB Main CPU Board 0670 00 0782 03 use with S N TS XXXXJ5 or higher 13 Cable Interconnect Panel Bd to Main CPU Bd 0012 00 1210 14 Switch w cable assembly 0012 0
61. 6 10 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure Diagnostics 6 Adjust R81 potentiometer and verify the linearity accordingly See figure below Static Calibration Setup Passpor Digital Mercury Manometer Static Pressure Calibration Transducer 150 0 mmHg 150 mmHg n Fitting a Bulb 4 Valve Bulb j Manually Squeeze Test Chamber Bulb P N 0138 00 0001 01 NIBP Front Detail View FIGURE 6 13 Specification 150mmHg 0 1 7 Reassemble unit and verify the following static pressure points to ensure proper calibration Specification 30 mmHg 100 mmHg 150 mmHg 190 mmHg and 250 mmHg 3 mmHg Passport 2 Passport 2 LT Service Manual 0070 10 0441 6 11 Diagnostics Calibration Procedure 6 4 7 3 Motor Pump Test 1 Connect the dummy cuff test chamber to the side panel fitting 2 Rotate the control knob to highlight the motor pump test Once the motor pump test is highlighted press the control knob to activate the test 3 On screen the target pressure of 300mmHg will be view on screen The time required to pump to 300mmHg will be viewed on screen NIBP Tests Previous Menu Voltage Setpoint Static Pressure Calibration All Off Motor Pump Test Leak Test 250mmHg Leak Test 150mmHg Leak Test 50mmHg Dump Test Adu
62. 6 5 7 Battery Operation Verification If batteries are installed in the unit remove them Verify the unit functions on Line power correctly Install the two batteries in the appropriate slots located on the left side of the monitor P Remove the line cord from the unit Verify the unit operation is not interrupted 5 Remove one of the batteries and verify the unit still operates Verify the second battery operates in the same manner by reinstalling the first battery and removing the second battery 6 5 8 Battery Back up Verification 1 Select Monitor Setup menu 2 Select Advanced Setup 3 SetDate and Time 4 Select Save Current settings 5 Select Normal Screen 6 Verify correct Date and Time is displayed 7 Power unit OFF 8 Remove AC power cord and 12V 11 1V Li batteries if installed 9 After 2 minutes plug unit back in reinstall batteries and power ON 10 Verify that correct Date and Time is retained 6 5 9 Operation Verification 1 Connect Filterline Short Term assembly to the input port of the connector on the left side of the monitor 2 Attach a can of Calibration Gas P N 0075 00 0033 01 to the Filterline Short Term assembly Feed gas into monitor and verify the ETCO Inspired CO and respiration readings occur on the screen 6 5 10 Leakage Current Tests 1 Plug the line cord of the unit into the safety analyzer Connect the case ground lead of the analyzer to the equipotentia
63. 84 01 13 PCB Assy CS1 MB1 RD1 0670 00 0690 14 Housing Bottom CS1 MB1 RD1 0380 00 0347 03 15 Label CS1 MB1 RD1 0334 00 1541 16 PCB Assy RD1 NC1 SP1 0670 00 0692 17 Housing Bottom RD1 NC1 SP1 0380 00 0347 04 18 Label RD1 NC1 SP1 0334 00 1573 19 PCB Assy SPI NCI SP2 0670 00 1140 20 Label SP1 NC1 SP2 0334 00 2521 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Communication Ports Parts List Replacement Parts DETAIL FIGURE 5 6 Base Station 5 26 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Communication Ports Parts List Detail B FIGURE 5 7 Base Station Assembly Passport 2 Passport 2 LT Service Manual 0070 10 0441 Parts List Rear Housing 5 28 ITEM NO 1 BRI O N jjj NIN NI NINININI omy oy co O Q Aajo Sr o O olo NI O a Of o NI QO F o N NS DESCRIPTION Housing Top Base Station Housing Bottom Base Station Latch Base Station Lever Base Station Carriage Base Station Bezel Base Station Connector Panel Rear Slide Dashpot Plastic Part PCB Assy Main Board PCB Assy Daughter Board Standoff Hex Male Female 4 40 x 748 Lg Dashpot Bracket Mounting Dashpot Base Station Bracket Main Connector Ground Pin Monitor Guide Tubing Silicone Rubber 3 8 I D X 1 16 Wall Spring Ex
64. A units may be loaded with SoftWare Package 101 only Passport2 It International units may be loaded with With IBP SoftWare Packages 201 thru 206 A ENGLISH With Coz OPTIONS WITH AN ASTERISK ARE NOT RELEASED AT THIS TIME G GERMAN LCD Display F FRENCH Masimo SpO2 P SPANISH 0998 00 0170 0002 pe Lead Acid Batteries T ITALIAN With Recorder D DUTCH AAMI Connector Type DANISH English Language J JAPANESE Passport 2 Passport 2 Service Manual 0070 10 0441 5 19 Replacement Parts Parts List Rear Housing TAIL CODE OPTIONS 0998 00 0900 XXXXL NOTE BOXES WITH A DIAGONAL LINE ARE NO LONGER AVAILABLE FOR NEW ORDERS INSTALL THE APPROPRIATE DEFAULT TO MATCH THE T H EC P2 Default 3 Lead ST Analysis Analyses alcs Arrhythmia Aralysis 8 Drug Calc 008 S W PP Drug Calcs 3 Lead ST amp Arrhythmia Analyse NOTE Passport XXXXL units may be lo esperto neben be tet dat Ht T were Pecke HHH per tet hee Hott tit e OPTIO WITH AN ASTERISK NOT RELEASED AT THIS TIME 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Parts List Rear Housing 18
65. ALLY BLANK REFER TO THE OPERATING INSTRUCTIONS 1 3 Operation THIS SECTION LEFT INTENTIONALLY BLANK REFER TO THE OPERATING INSTRUCTIONS 1 2 0070 10 0441 Passport 2 Passport 2 Service Manual 2 Theory of Operation 2 1 CPU Control Module 2 2 2 2 Front End Module 2 12 2 3 TFT Display Monochrome Interface Board and Keypad Board P N 0670 00 0686 or 0670 00 0726 2 21 2 4 NIBP Module P N 0997 00 0501 2 22 2 5 Patient Connector Board AAMI 2 29 2 6 Patient Connector Board 2 31 2 7 Nellcor Interface Board 2 33 2 8 Recorder Interface Board AR 42 2 33 2 9 XE 50 Recorder Interface Board 2 34 2 10 Power Supply 2 36 2 12 El Display Interface Board 2 40 2 13 Passport 2 Passive Display Keypad Interface Board 2 41 2 14 NEC 10 4 Display Keypad Interface Board 2 43 2 15 Passport 2 NIBP Modul
66. END x iS 4 PLACES Pu 2 PLACES MOUNTING HARDWARE LOCKWASHER AND NUT SUPPLIED WITH ITEM 5 TORQUE 13IN LB 2 PLACES X 13 35 w S 33 2 PLACES DO NOT CREASE Z v 36 Se ATTACH GROUND STRAP CONDUCTIVE SURFACE IS TO CONTACT RAIL GROUND STRAP IS PART OF THE KEYPAD ITEM 6 2 PLACES MM 24 6 PLACES EL DISPLAY SERIAL NUMBER LABEL LOCATE APPROX AS lt SHOWN 2 PLACES As 2 PLACES 32 2 PLACES Isometric Drawing FRONT ASSEMBLY EL Added 03 10 00 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Replacement Parts Passive Display 0212 12 0403 2 PLACES 0212 10 0402 41 2 PLACES START KEYPAD INSTALLATION AT ENCODER END gt LAS 44 PAS Ie 8 L wr 0212 12 0403 4 PLACES CUTEM 2 PLACES m 0212 12 0404 4 PLACES 25 0221 00 0004 4 PLACES 0212 12 0403 Isometric Drawing 2 PLACES PASSIVE DISPLAY ASSEMBLY 0212 14 0408 Added 09 29 00 0212 12 0404 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Parts List Front Housing 5 1 Parts List Front Hou
67. ET together with a NPN Transistor to provide power switching for the Passive Display s 12V excitation The FET is controlled by the transistor which is switched on and off by the VIDPWR signal from the CPU board The circuit also provides power filtering using an LC filter to reduce the in rush current drawn by the display JTAG Connection The board is equipped with Connector J9 for in circuit programming of the Keypad Scanning CPLD Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 41 Passport 2 Passive Display Keypad Interface Board Theory of Operation 2 42 LCDBIAS Control Circuit In order to properly turn on the passive display the board employs a N Channel FET which is switched on and off by the LCDBIAS signal from the CPU board The LCDBIAS signal is connected to the CPLD for power sequencing The contrast function is accomplished by varying a 1OK potentiometer LCDADJ Control Circuit The contrast function is accomplished by varying a potentiometer 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation NEC 10 4 Display Keypad Interface Board 2 14 NEC 10 4 Display Keypad Interface Board Overview This board provides interface and support for the 10 4 NEC Display SPI interface to a 4 X 8 matrix keypad optical encoder and LED s It provides connections for an external speaker and inverter for the display 2 14 1 Video Display Interface The video data control si
68. IBP assembly consider proactively replacing the pump assembly P N 0012 00 1249 after seven years of regular operation see Disassembly Instructions on page 3 8 and see Disassembly Instructions on page 3 8 letter F for instructions to remove and replace the NIBP Pump assembly Perform Verification and CO Calibration Annually 1 See Test Outline in Service Manual 2 In order to provide accuracy verification of the Microstream CO calibration is required every 4000 operating hours or once a year whichever comes first In addition to achieve the most accurate CO readings possible it is advised that the first calibration be performed after 1200 operating hours 3 Replace Pump and Scrubber after 20 000 Operating Hours or as Required 4 Replace the Sensor Assembly after 20 000 Operating Hours or as required User Preventive Maintenance Introduction This section of the manual outlines routine maintenance that should be performed by the user The Passport 2 Monitor is designed for stable operation over long periods of time and under normal circumstances should not require technical maintenance 0070 10 0441 Passport 2 Passport 2 LT Service Manual Preventive Maintenance User Preventive Maintenance Introduction beyond that described in this section However it is recommended that routine maintenance calibration and safety checks be performed at least once a year or more often as required by local statutory
69. Inierfacec Connector P cra Recorder Interface rn o these ctn ure at eed ea ura UR a Rire COs Interface Connector 23 tercie eire u idest pe tier NIBP Interface Connector 25 5 3 tereti aa obo i Defib Connector J24 SYNC Connector J22 Docking Connector 9 7 pe cd gi Mv 3 9xVolt Communications Processor and Supports ip dati aede eco e D A Analog Outputs Analog Inputs Keypad and Rotary qa Qhatuna aa o EIER Control FUNGHONS a u be neto Hb ates eb ep Tt ret utr Module BUS naqa E Met Boos Front Erid Module s SD dee tete Lenta be eim ls aa Power S pply ep donet tes iiu b a TP e a e e PIS Communication Isolation ted odes e PEE ivi sa sai D t Acquisiti n u btt te te rete te s Analog to Digital Converter Microcontroller and Data Processing Memory ied ortas EHE aa I O Ports and Software Register Programming Signal Acquisifi n zzi eie chen dde 55315 i tte en rette vetu st a MU au
70. Keypad Overlay 0331 00 0107 0330 00 0029 XX mae 0331 00 0117 01 a 0331 00 0129 Fresh 4gog 1957 00222 i 00 lor Includes View Key P N 0012 00 xxxx LCD Color Matrix Display EL Display Planar 0160 00 0044 Monochrome Display For P N 0160 00 0049 Use P N 0040 00 0331 P N 0160 00 0071 01 Anti Glare P N 0160 00 0112 01 Bonded Anti Glare c LCD Passive Color Display P N 0160 00 0058 FIGURE 4 5 Detail Parts Lists and Assembly Schematic Drawing Patient N Interconnect Bd e Cabl PAN 0012 00 1206 Patient Interconnect J6 NIBP Cable PIN 0012 00 1211 P6 NIBP Module NIBP Hose P N 0997 00 0501 P eo P N 0670 00 0730 P N 0670 00 0746 01 P N 0670 00 0798 01 d P N 0012 00 1249 Inline Filter P N 0378 02 0004 Comm Ports P N 0198 00 0037 Blank P N 0998 00 0178 03 CS1 1 RD1 P N 0998 00 0178 05 RD1 NC1 SP1 P N 0998 00 0178 06 SP1 NC1 SP2 P N 0998 00 0178 04 CS1 1 SP1 Adult Sensor P N 0600 00 0047 01 Patient Connector Panel Temperature r zz NIBP Cuff Spo2 Cable and Sensor TBP Pressure Xducer NIBP 0070 10 044 1 Passport 2 Passport
71. LCOR 0007 0023 0039 0055 A 0998 00 0170 w o STEN masimo 0008 0024 0040 0056 1 NELLCOR 0163 MASIMO 5 QUSS NELLCOR 0 929 4 229 006 4025 4041 2 X 4026 4042 NELLCOR 101231 555605090 9 ABER MASIMO 2 1294 gt x gt LS NELLCOR 0141 0149 0157 26165 31018151015 2 4141 4149 MASIMO 0 50 2 525 6 s gt 4142 4150 NELLCOR 2 MASIMO 0030 0046 0062 0031 0047 0063 NELLCOR lt MASIMO 0032 0048 0064 NELLCOR 0143 0151 0159 MASIMO 0144 0152 0160 SOFTWARE OPTIONS 0996 00 0045 XXX DESCRIPTION 0996 00 0045 XXX DESCRIPTION 001 SM PP2 Default 101 SM PP2 LT USA DEFAULT 002 SM PP2 3 Lead ST Analysis 201 SM PP2 LT INTERNATIONAL DEFAULT 003 SM 2 Arrhythmia Analysis 202 SM PP2 LT INTERNATIONAL 4 004 sw 2 Drug Calcs 203 SM PP2 LT INTERNATIONAL 4 TRACE ST ANALYSIS W MULTI VECTOR ECG 005 S W PP2 3 Lead ST amp Arrhythmia Analyses 204 SM PP2 LT INTERNATIONAL ARRHYTHMIA ANALYSIS 006 SM 2 3 Lead ST Analysis amp Drug Calcs 205 SM PP2 LT INTERNATIONAL 4 amp ARRHYTHMIA ANALYSIS 007 S W PP2 Arrhythmia Analysis amp Drug Calcs 206 SM PP2 LT INTERNATIONAL 4 TRACE ST ANALYSIS W MULTI VECTOR ECG amp ARRHYTHMIA ANALYSIS 008 S W PP2 Drug Calcs 3 Lead ST amp Arrhythmia Analyses Example L LANGUAGE CODE NOTE Passport2 0XXXL units may be loaded withSoftWare Packages 001 thru 008 Passport2 LT US
72. NleWu c 2 41 Detailed Description e u ete osten eer e ladles 2 41 NEC 10 4 Display Keypad Interface Board 2 4040 2 0000000000000000000000 2 43 Video Display Interface rrr eee edat tede OR ena 2 43 TET Inverter Interface i ees E a E van 2 43 Speaker Interfaces reo ttt ur eod fete ettet pee e Fette t 2 44 Encoder Interface sic tre ve de PER VG de RR EAR d ode de e IE RN EE PE UR CHR ER RT 2 44 The CPLD Interface to the CPU Board VIA 1 10 22 emere eene 2 45 Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 eem eene 2 46 Pneumatic System Re ralenti eter p den posti desit eds 2 46 Pressure Transducer ee uma u ED uae RE E a de E hae 2 47 ADC U2 2 47 DAC ius 2 48 Pump 1 2 48 Dump Valve 1 2 48 linear Valve V2 scie Tama kuk o ee D 2 48 Over Pressure Detection od eee d AO 2 49 Pressures Transducer x uyaman tete ten ne Feet Pet dete dte 2 50 T2VSW Cir itty Q Q2 ca o oae a Rb ett condere ERE ed pce ege Be 2 50 Primary Microcontroller UJ 10 3 etit a o R
73. OG au ERO COURT GE HG RM IEEE D px 2 50 Secondary Microcontroller UA u t rie de et ete i ches e a E ra eee Rhea 2 51 Memon ei M E 2 52 CMOS Static RAM US 2 tied te tede aee a CR Was 2 52 CMOS EEPROM cont e eis dn e pH bb a ment e I IN ettam cepta 2 52 Hardware Locks m 2 53 era E D M EUR ME ME iesu codd 2 53 Host Cc ER 2 53 Interface Board Nellcor Nell 3 and Masimo 2 54 Power 5 SpO UART Serial Interface Panel Interface Extension Connector Repair Information S 7 1 Introduction Safety Precautions Troubleshooting Guidelines Exchange Programs Special Tools Required Disassembly Instructions Assembly and Schematic Diagrams Parts bist Front HOUSING ta 5 5 Parts List Rear HOUSING ss ete edet eese do eoa ate daa re OR saa q LE da 5 15 Commi nicationiPorts Paris List 5 25 Passport 2 Passport 2 LT Service Manval 0070 10 0441 iti Table of Contents Calibratio
74. OXIMAX NELL3 NELLCOR MASIMO NELLCOR OXIMAX NELL3 W O IBP NELLCOR MASIMO NELLCOR OXIMAX NELL3 5 18 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Parts List Rear Housing The following charts will help identify the proper hardware and software in each Passport 2 These part numbers are required before an CPU exchange board P N 0670 00 0674EXX or P N 0670 00 0739 01 can be ordered from the National Repair Center S W P N 0996 00 0045 002 CPU P N 0670 00 0674E02 0670 00 0674E02 CPU Bd TFT Active Color Display or Monochrome Serial Number CM12233 K1 0670 00 0674E03 CPU EL Display L 0670 00 0674E04 CPU Bd Passive Color Display PP2 LT 0670 00 0739E01 CPU Bd 12 Lead ECG capable unit TFT Only Example Unit P N 0998 00 0170 0002A Passport 2 Part Number PASSPORT2 PASSPORT2 2 LT WITH CO2 FOR VIEWPOINT TELEMETRY BATTERY LEAD ACID EXTENDED LEAD ACID inasa Passport2 HP NELLCOR MASIMO NELLCOR MASIMO NELLCOR 7 55 2 9254 NN MASIMO 0178 01864 9 Label on rear NELLCOR D c POS KASS Passport 2 EN masimo 0006 0022 0038 0054 0070 P 4 0996 00 0045 XXX NEL
75. OZ 0303 033333 00 DL gt 246 3 d C NOLI v 540 012 55535 vA TAF DP 0 gt EDGO0 O 000555555 2 gt gt gt C GO 6 0 5 85555 6 gt gt OYL 5 99 GAQUNmOmsriDuibr coa moduli e E FIGURE 6 6 XE 50 Test Strip Passport 2 Passport 2 LT Service Manual 0070 10 0441 6 5 Diagnostics Calibration Procedure 6 4 4 Display Tests The display test offers the choice of a Pixel test or a Color test The color tests will only be available on units with a color display Display Tests Previous Menu Pixel Test Color Test Select to return to previous menu FIGURE 6 7 6 4 5 Pixel Test The pixel test will verify the proper operation the display On screen one half of the screen will be illuminated while the second half is off Pressing the control knob will illuminate the second half of the screen while the first half is turned off Pressing the control knob a third time will activate the display test menu screen FIGURE 6 8 0070 10 0441 Passport 2 Passport 2 LT Service Manual Calibration Procedure Diagnostics 6 4 6 Color Test The color test will verify the four basic colors of the display Press the control knob to view the selected color
76. Pan Head 6 32 x 0212 12 0604 52 Standoff Male Female 6 32 x 0 250 long 0361 27 0250 53 Cable Patient Connector to Main CPU 0012 00 1206 01 54 Strap Battery Door 0346 00 0047 N A Not available 0070 10 0441 Passport 2 Passport 2 Service Manual Replacement Parts Parts List Rear Housing ITEM NO DESCRIPTION PART NUMBER 55 Connector Panel Masimo w CO 0380 00 0348 01 55 Connector Panel Masimo w o 0380 00 0348 02 55 Connector Panel Nellcor w CO 0380 00 0348 03 55 Connector Panel Nellcor w o CO 0380 00 0348 04 55 Connector Panel Nellcor Oximax w 0380 00 0348 05 55 Connector Panel Nellcor Oximax w o CO 0380 00 0348 06 56 CO Exhaust Connector w nut 0103 00 0489 57 CO Input Connector Door 0380 00 0355 58 Spring 0214 00 0236 59 Screw Self Tapping 4 x 3 16 0213 09 0403 60 Washer Flat 0 470 OD 0 119 ID 0221 00 1014 61 PCB Patient Connector Bd AAMI w IBP 0670 00 0682 01 61 PCB Patient Connector Bd AAMI w o IBP 0670 00 0682 02 61 PCB Patient Connector Bd HP w IBP or w o IBP 0670 00 0680 01 62 Label Patient Connector 0334 00 1501 XX See Table 6 2 63 Label Right Side 0334 00 1528 64 Label Information Passport2 0334 00 1500 65 Label Part Number Serial Number N A 66 Label Software Part Number N A 67 Label Loading Recorder Paper AR 42
77. RI provides ESD protection for the circuit from transients from the inverter Speaker Interface The system speaker is connected to J2 The NEC 10 4 Display Keypad Interface Board functions as a pass through for audio signals Encoder Interface The optical encoder for the keypad is connected to J4 Phase signals CHA CHB and the switch contact signal SW are passed through the NEC 10 4 Display Keypad Interface Board to an ADC on the CPU board 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation Theory of Operation NEC 10 4 Display Keypad Interface Board 2 14 5 The CPLD Interface to the CPU Board VIA SPI The purpose of the CPLD 01 is to interface to and scan for key presses on the front panel keypad The method of communicating with the CPLD is the SPI port of the 68HC916X1 communications processor on the CPU control board 0670 00 0674 The SPI interface is a serial interface with separate serial data and clock Data can flow in either direction using the common clock The communications processor is set as the master device and the CPLD can only be a slave The serial input provides the keypad poll data DO D1 D2 D3 and LED data XLED 1 4 for the charger and mute LED s This data is latched and is updated with each communication packet and erased whenever the BRESET is enabled The output of the keypad Row Select is sent to the keypad The column selection is edge latched when a key is presse
78. ST is not connected to the PIC16 MCLR input VPP in order to prevent an HC16Z1 reset from bringing the out of the emergency shutdown state 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 5 2 5 1 2 5 2 2 5 3 2 5 4 2 5 5 2 5 6 Patient Connector Board AAMI Patient Connector Board AAMI The ECM Patient Connector board is intended for use with cables having integral 1k resistors which eliminate the possibility of harmful arc over at the connector pins during defibrillation Spark Gap Suppressor The patient cable is attached to the patient connector board The clamping of defibrillator transients consisting of a neon bulb with each electrode circuit which clamps the peak voltage with respect to isolated ground in series with the coupling capacitors The cable resistors absorb the remaining defibrillator voltage Neon Bulbs This board provides defibrillator overload protection in conjunction with the front end board The neon bulbs has a breakdown voltage range 60 v to 75 Volts The patient s ECG and Respiration signals pass through the neon bulbs which suppresses the defibrillation pulses Low Pass Filter The patient cable is attached to the patient connector board The ECG signal and the respiration signal pass through the AAMI connector J1 This board contains 3 LC Low Pass Filters with a minimum roll off frequency of 17 MHz A cutoff frequency of 23 MHz 3dB EMI Su
79. Service Manual Datascope Passport 2 Datascope Passport 2 mindray Service Manual Datascope Passport 2 Datascope Passport 2LT NORTH AMERICA FilterLine is a US registered trademark of Oridion Medical Ltd Masimo SET is a U S registered trademark of Masimo Corp Medico is a registered trademark of Oridion Medical Ltd miniMedico is a registered trademark of Oridion Medical Ltd Microstream is a U S registered trademark of Oridion Medical Ltd Navigator is U S trademark of Mindray DS USA Inc Nelicor is US registered trademark of Nellcor Puritan Bennett Inc OxiMax is U S registered trademark of Nellcor Puritan Bennett Inc Oxismart is a US registered trademark of Nellcor Puritan Bennett Inc Passport 28 is a US registered trademark of Mindray DS USA Inc PatientNet is U S registered trademark of GE Medical Systems Information Technologies Velcro is a registered trademark of Velcro Industries B V Visa is a U S registered trademark of Mindray DS USA Inc Copyright Mindray DS USA Inc 2008 Printed in U S A All rights reserved Contents of this publication may not be reproduced in any form without permission of Mindray DS USA Inc Passport 2 Passport 2 LT Service Manual 0070 10 0441 Jable of Contents 5 suas case
80. The SpO2 interface board will be specifically configured for the SpO2 module it is interfacing with This may include different jumper settings different feedback resistor options custom ribbon cables different SpO ID resistors etc The J4 Nellcor 506 15 Nellcor MP304 J Masimo MS 3 connectors are used for these interfaces To help the software decide which SpO module is under use three SpOs identification bits are available for reading on general purpose inputs by the Passport front end microprocessor An ESD protection device U1 is connected to the SoO gt communications signals to C4 are decoupling capacitors connected to the ground and shield CR1 is a do not populate and is used as a contingency protection circuit for the U3 regulator CR1 s purpose is to allow current to flow backwards from the output to the input of the linear regulator during power down fo remove residual charge on the output capacitors Panel Interface Extension Connector In order to physically and mechanically connect the Nellcor MP506 board to this SpO gt Interface board a pass through or extension connection for the panel interface signals had to be placed on the SpO Interface board Therefore three connectors are used when interfacing to a Nellcor MP506 One connector JA is for the SpO signals The second and third connectors J and J2 are the extension for the panel interface signals 0070 10 0441 Passport 2 Passport 2
81. a PatientNet Radio amp 608 Radio Mount Retainer Left Stationary Mounting Bracket and 4 Screws P N 0040 00 0299 02 0226 00 0031 Retainer Right P N 0226 00 0030 Comm Port P N 0998 00 0178 05 or P N 0998 00 0178 06 282 407 608MHz Radio Assembly P N 0040 00 0361 01 Bracket amp Screws P N 0040 00 0296 Bed Rail Hook Mount and 4 Screws P N 0040 00 0293 PatientNet Mounting Kit P N 0020 00 0458 01 Transmitter P N 0992 00 0130 01 Transmitter P N 0992 00 0115 Visa I P N 0992 00 0116 Visa II FIGURE 3 1 Stationary Mount Bedrail Hook Mount Visa Patient Net Radio and 608 Radio Mount 0070 10 0441 Passport 2 Passport 2 Service Manual Repair Information Rolling Stand and Wall Mount Optional Quick Release Deluxe Mounting Plate P N 0040 00 0299 01 Rolling Stand Dimensions Height Width Max Load Passport 2 Passport 2 LT Service Manual P N 0367 00 0068 x Rolling Stand Kit P N 0040 00 0287 01 Stationary Mounting Bracket and Screws P N 0040 00 0299 02 Channel Plate Assembly P N 0386 00 0264 i Swivel Head Assembly P N 0376 00 0011 Column P N 0009 00 0004 Base Basket Assembly P N 0426 00 0073 P N 0441 00 0168 Caster Non Locking P N 0401 00 0027 01 Caster Locking P N 0401 00 0027 02 0070 10 0441 Wall Mount Kit P N
82. acturer s Responsibility Extended Warranty eerie do eros epi a eec pa de b op P RE e NE e iv 0070 10 0441 Passport 2 Passport 2 LT Service Manual Contents Introduction Contents Chapter 1 0 Operation 1 1 2 0 Theory of Operation 2 1 3 0 Repair Information 3 1 4 0 Assembly and Schematic Diagrams 4 1 5 0 Replacement Parts 5 1 6 0 Calibration Procedure 6 1 7 0 Preventive Maintenance 7 1 Foreword This Service Manual is intended as a guide for technically qualified personnel during repair and calibration procedures The information has been divided into the eight chapters listed above A detailed table of contents is provided on the first page of each chapter This publication may have been updated to reflect product design changes and or manual improvements Any such changes to this manual would be accomplished by supplying replacement pages and instructions for inserting or affixing them into the manual Note Unauthorized servicing may void the remainder of the warranty Check with the factory or with a local authorized representative to deter
83. ailable principally on ports TA 2 TB 2 1 SD 5 3 TD TC 1 0 QS 6 4 QA 4 Ports EL EH and AS 5 2 are used for microprocessor control signals and are configured as outputs except for Port EH bit 1 which is an input The table below shows the bit assignments for the ports Port SD 2 0 is used for the SpO ID bits and is listed below Ports TA and TB are used for the general purpose timer signals and are listed below Port QS is used for the QSPI signals and is listed below Ports UA and AS are used for the SCI signals and are listed below Port DD is used for the BDM signals but is not listed below Several ports are reserved for future interfaces using external address and data bus lines These ports are A B C D E H and J All of the unused are all configured as outputs to eliminate the need to terminate these pins to a valid logic level ADC inputs and general purpose I O are provided by Port QA and QB The ports can be used for all the ADC signals but have multiple functions They can be configured with external analog multiplexer chips to accept as many as 18 analog inputs utilizing the multiplexed signals and on port bits 1 and 0 This is used to extend the capabilities of the internal ADC In this design we accept 7 ADC inputs and don t need an external analog multiplexer chip The function and pin assignments of these ports are described in the tables below The exact function
84. are independent of the REMOTE ON signal The charger provides protection against shorted battery cells and overly discharged batteries Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 37 Power Supply 2 38 Theory of Operation The Power Supply also provides a BATT CHARGE output signal that is a logic 1 when either charger is active i e batteries are actually being charged Otherwise BATT CHARGE will be a logic O In addition the signal will be logic O if there is a charger fault such as open shorted cell s The BATT CHARGE output is capable of driving an external LED sourcing a minimum of 10mA During BATTERY operation i e AC and DS DC powers are not present the power supply latches off when the BATTERY voltage drops below 10 3V for SLA and 9 2V for Li lon The power supply unlatches when any one of the following occurs The signal is toggled off and on provided that valid input power DS DC or BATTERY is present AC or DS DC power is applied 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 11 Communication Isolation Communication Isolation The communication between the Front End Module and the host must be isolated to the same degree as the power supply The communications consist of an asynchronous bidirectional serial data stream at 500K baud Since these signals are all digital the isolation is performed with optocouplers
85. ate Test FIGURE 6 17 Specification Bleed Rate 6 0mmHg sec 20 500cc test chamber Specification Bleed Rate 6 0mmHg sec 20 700cc test chamber Passport 2 Passport 2 LT Service Manual 0070 10 0441 Diagnostics Calibration Procedure 6 4 7 7 Overpressure Test Adult Pediatric Neonate The purpose of this test is to verify the hardware overpressure sensor is functioning properly 1 Connect the dummy cuff test chamber to the side panel fitting 2 Rotate the control knob to highlight the specified overpressure test Once the overpressure test is highlighted press the control knob to activate the test NOTE Due to safety conditions the unit must be reset after each Overpressure Size as been tested NIBP Tests Previous Menu Overpressure Voltage Setpoint Static Pressure Calibration Motor Pump Test Leak Test 250mmHg Leak Test 150 Leak Test 50mmHg Dump Test Adult Dump Test Neonate Bleed Rate Test Qverpressure Test Adult Overpressure Test Pediatric Overpressure Test Neonate Press the control knob to activate the Overpressure Test FIGURE 6 18 Software Trip points Specifications Adult or 300 mmHg Pediatric or 200 mmHg Neonate or z 150 0 mmHg Hardware Trip points Specifications Adult or 330 mmHg Pediatric lt or 220 mmHg Neonate lt 165 mmHg 3 Press the PRINT key to record
86. be accidentally erased or corrupted outside the factory 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 2 7 Front End Module The processor is to be soldered to the board unprogrammed Initial programming of the bootloader is to be performed by the J204 BDM connector Background Debug Mode The application code can also be installed by the BDM or it can be downloaded via the module bus once the bootloader is installed Note that the BDM can also be used to facilitate board testing besides downloading code The RAM requirements are met by the internal SRAM array The vector table lies within the RAM This allows the bootloader and application code to each install its own vectors at runtime Note that when a Flash module in this case the bootloader module is configured as bootable the initial PC stack pointer etc are fetched from the module s shadow registers not the usual vector table Therefore the system is able to boot despite having undefined RAM contents in the vector table at startup One of the first tasks of the code is then to install a valid vector table in the SRAM This must be done before any exception processing can occur I O Ports and Software Register Programming The interfaces to the processor are through the general purpose I O ports the the SCI UART and the timer ports The internal ADC is also used for status monitoring General purpose O expansion is av
87. boot device PLL mode normal Two SCI ports are used The first SCI port is used to interface to the host communication controller across the isolation barrier via the opto couplers The processor lies on the patient isolated side of the barrier and communicates using the serial module bus The required SCI baud rate is 500K baud A second SCI is used to communicate to the SpO boards The third SCI is used for debugging purposes Power for the core is supplied by a 3 3VD switching power supply Power for the internal A D converter is supplied by a 5V linear regulator The processor is resetable by a hard reset using several methods 1 on power up 2 generated locally by monitoring a voltage supervisory chip and 3 the provision is made to have the module bus reset from the CPU side sent across the isolation barrier optocouplers and then go to the microcontroller reset pin causing a hard reset The Communications Processor will reset all the modules on the module bus at the beginning of its operation after its own initialization A general purpose timer is used for several functions One input capture channel is used for the pacer detection edge capture Two output compare channels are used to implement the 38 4KHz respiration clock The real time ECG trigger pulse is used with a general purpose I O The periodic interrupt timer has the capability to be set to interrupt every 2ms 5 for software ISRs Passport 2 Pass
88. ced to different supply voltages they can be significantly different Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 35 Power Supply 2 10 2 10 1 2 36 Theory of Operation Power Supply Part Numbers 0014 00 0250 and 0014 00 0190 01 The isolated power supply takes a raw 12V2 DC supply voltage and generates the operating voltages required by the Front End Module Since the input voltage varies over a 5 range some form of regulation is required To preserve efficiency a modular switching supply is used This power supply requires sufficient isolation between the input and output to withstand the open circuit voltage of a defibrillator up to 5 KV Further it requires low capacitance between the input and output to minimize leakage currents which may flow should the patient accidently contact line voltage Operating power is to be derived from the partially regulated 12V2 supply 4 0 W max including the SpO2 module interface and output as 5 5 and 11V Several voltages will be generated locally on the isolated front end including 2 5V 3 3VD 5 5V and 5P Other voltages will be generated on the SpO2 interface board The 5 5V and 11V DC output voltages vary according to load The major source of load variation is the presence or absence of the invasive pressure transducers Certain portions of the system such as the A D converter and devices interfaced to the microcontroller require a well
89. ck synthesizer Y2 amp U66 and video display RAM U18 amp U19 The signals required by the various display panels are routed to the Keypad Display board through connector J5 The various Keypad Display boards have specific interface connectors for each display type requiring only a simple cable assembly The display panel identifies itself to the CPU module by connecting selected pins in the VIDSEL 4 1 field directly to the power net These signals are pulled down to 3VGND on the CPU module through 33 2K resistors and their assigned value is then read in order to identify the panel type 2 1 14 PCMCIA Interface The PCMCIA interface is a dual interface called Socket A and Socket B The PCMCIA cards plug into a dual stacked connector assembly J14 The MPC860T s PCMCIA host adapter module provides all the control logic for each PCMCIA socket interface and requires only power switching logic and buffering The additional external buffering allows the PCMCIA host adapter module to support up to two PCMCIA sockets and provide electrical isolation Because the PCMCIA interface specification was designed around the Intel Little Endian method of storing 16 bit words a byte swapping scheme had to be employed in order to conform to the standard Motorola follows the Big Endian method 2 1 15 Serial EEPROM The memory is made up of 512 bytes of non volatile memory 045 is a dip part and is socketed to allow programming the memory
90. clean off the repair area with alcohol and a stiff hairbrush This will remove any residual solder flux inturn allowing the instrument to return to its original neat appearance 3 4 Exchange Programs exchange program for certain assemblies in the instrument is available In many cases replacement of the complete assembly will result in the most expedient repairs 3 5 Special Tools Required DVM Digital Mercury Manometer O to 300 mmHg Safety Analyzer Dempsey model or Equivalent Patient Simulator Flow Meter Test Chamber Dummy Cuff P N 0138 00 0001 01 700 or 03 500 Passport 2 Passport 2 LT Service Manual 0070 10 0441 3 7 Disassembly Instructions Repair Information 3 6 Disassembly Instructions Before disassembling the unit perform the following Power down the unit and remove the line cord Remove all cable assemblies from the left side right side and rear of the unit Remove any batteries that were installed Perform all work on a properly grounded station Removal of the Front Housing 1 Place the unit face down on a protective surface 2 Loosen the screw from the Comm Port or filler Port Remove the Comm Port or filler port from the rear of the unit Remove the eight screws from the rear of the unit 3 Turn the unit over and carefully remove the front housing assembly 4 Disconnect the 80 pin ribbon cable from the J1 of the Display Keypad board mount in the front housing
91. connected to an International Rectifier IRF7303 Power MOSFET A DAC code of 0 will result in zero current flow in Q and a fully opened valve A full scale DAC code results in the maximum DAC output voltage of 2 5V and thus maximum current flow Q6 This corresponds to a fully closed valve Power on reset clears the DAC s output to O thus fully opening the valve The DAC s 2 5V reference voltage is derived from a Linear Technology part T1790 2 5 Pump M1 The pump control signal M1EN is provided via a PWM signal from the HC16Z1 microcontroller and is active high This signal switches MOSFET Q3 1 2 applying power to the pump motor Power to the pump 12VSW is supplied from 12V2 via Q2 This allows the pump to be disabled in case of a fault condition Dump Valve V1 The dump valve V1 is controlled by the VIEN signal provided by an active high signal from the HC16Z1 microcontroller This signal drives MOSFET 1 2 which switches power to the valve coil Power to the valve 12VSW is supplied from 12V2 via Q2 This allows the valve to be opened in case of a fault condition This valve is a normally open type so coil current must be supplied to cause the valve to close Linear Valve V2 The linear valve V2 provides bleed down of the cuff pressure The HC16Z1 software maintains the pressure bleed rate at a nominal per second for product specified volumes and pressure ranges The linear valve can also be u
92. cy NIBP Tests Previous Menu Voltage Setpoint Static Pressure Calibration Motor Pump Test Leak Test 250mmHg Leak Test 150mmHg Leak Test 50mmHg Dump Test Adult Dump Test Neonate Bleed Rate Test Qverpressure Test Adult Test Pediatric Test Neonate Press the control knob to enter Nibp Static Pressure Calibration FIGURE 6 12 1 Connect the dummy cuff test chamber to the side panel fitting 2 Rotate the control knob to highlight the static pressure calibration Once the static pressure calibration test is highlighted press the control knob to activate the test 3 Using a bulb and valve manually inflate the chamber to 150mmHg 150mmHg is the middle of the specified range 4 Verify the pressure displayed on screen matches the pressure viewed on a Digital Mercury Manometer Specification 0 to 300mmHg 3mmHg If the readings do not match follow the following procedure 1 Turn unit off 2 Remove the eight screws from the rear of the unit and separate the front and rear housing 3 Remove the NIBP Pump assembly and bracket from the Main Assembly Be sure to reattach NIBP pump cable to module before next step 4 Locate R81 on the NIBP Module Turn unit on and enter the Diagnostics as stated in section 6 4 Reenter the diagnostics menu and select the Static Pressure Calibration menu 5 Manually inflate the chamber to 150mmHg
93. d This data is then serial encoded and transmitted to the Host The method used to scan the keypad which is a matrix of 4 rows J11 ROW1 4 with up to 8 columns J10 COLI 8 is a walking zero pattern This means that three out of the four 1 row lines will always be a logic with one line driven low In a complete cycle each line will sequentially be driven low driving a different row on the keypad The CPLD has an 8 bit receive shift register with a latch to hold the row selection pattern walking zero This completes the first part of the cycle The next 8 bit serial data received provides the next pattern for the row selection walking zero and simultaneously shifts back the previous column pattern If a key were pressed there would be a logic O in the data shifted back for one of the columns Since the communications processor knows which row was logic and now has the column location it can determine exactly which key was pressed Since there are only four rows allocated to the keypad and eight select lines available two have been assigned to the alarm LED s The lines used are assigned to bits 4 and 5 of the input serial data Lines assigned to bits 0 3 are for the keypad and bits 6 and 7 are not used The LED s can be turned on or off as well as flashed by changing the pattern of the bits assigned Passive components between the CPLD and top and bottom tail connectors are needed as follows R15 22 are use
94. d as the series combination of C21 and C22 plus the stray capacitance which is estimated to be less than 5pF At Power On Reset the state of the HC16Z1 pins controlling the pump and valves is such that they are disabled pump off valves open The HC16Z1 has an internal ADC which will be used to monitor both pressure transducer outputs a 2 5V reference source A5V 12V and the switched 12V voltage 12VSW Dividers are used where needed to insure the sampled voltage is within the usable ADC input range A filtered version of T5V is used as the ADC reference 2 4 9 Secondary Microcontroller U4 The PCB incorporates a Microchip Technologies PIC16LC710 to perform over pressure sensing A 2 45MHz ceramic resonator Y2 with builtin capacitors is used for the PIC16 oscillator The PIC16 is informed of the desired measurement mode by reading the MODE2 0 signals fed from the HC16Z1 It in turn sends back three signals 5 2 0 to indicate that the 6 has not encountered any faults has set its over pressure and measurement duration limits to match the type of measurement indicated and is ready for the measurement of the type encoded on STATE2 O The over pressure signal is sampled an ADC internal to the PIC16 at a rate of 1 196kHz If it detects an abnormal condition the PIC16 goes into an emergency shutdown state In this state the PIC16 turns off the 12VSW power feeding the pump and valves by toggling the 12VEN sig
95. d down to atmosphere A separate Microchip PIC16C710 processor and Fujikura XFPM O50KPG BP pressure transducer are used to monitor the cuff pressure redundantly for safety purposes This document describes the details of the actual design implementation developed to meet the specifications set forth in the PCB specification document It provides theory of operation and internal specification of this implementation Pneumatic System Control The pneumatic control consists of a pressure transducer ADC microcontroller DAC and drive circuitry This circuitry controls a pump a dump valve and a linear valve The pneumatics can also be disengaged by the over pressure detection circuitry The pump is used to inflate the cuff at the beginning of each measurement cycle Inflation pressure is regulated by the HC16Z1 software monitoring the pressure transducer signal from PT1 via the AD7714 ADC During the pump up phase the dump valve is closed and linear valve V2 is modulated At the onset of the actual measurement phase the linear valve is controlled to provide a gradual reduction of the cuff pressure The HC16Z1 software maintains the pressure bleed rate at a nominal 6 mmHg per second regardless of the cuff pressure or system volume During the measurement phase the pressure signal acquired by the transducer PT1 is digitized by the ADC U2 and processed to extract the oscillometric blood pressure data At the conclusion of the measurem
96. d output data for analog inputs corresponding to nominally 1 25 volts around the 2 5 volt reference The ADC results are read into the QSPI receive RAM as words and are left justified That is the sign bit of the ADC data is the msb of the word and the 12 bit ADC data is padded with 4 trailing zeros The ADC regards the leading 1 in the command byte as a synchronization bit Therefore the output data justification is controlled by the justification of the command byte within the word transmitted by the 2 2 5 Microcontroller and Data Processing The Front End is controlled by U224 a Motorola MCF5282 microcontroller operating in the single chip mode The board pulls RCON high which causes the processor to enter this mode as it comes out of reset The internal 64 0MHz clock is generated by the internal synthesizer from a 8 000 MHz reference crystal The crystal operates with roughly sinusoidal waveforms and therefore generates less EMI than a square wave oscillator module To further minimize EMI and avoid the need for external pull up resistors all unneeded dynamic O pins are set as outputs and disabled This is performed by programming all the unused general purpose I O pins as outputs at initial software boot up This also helps reduce power dissipation The other default values that are set by RCON high are boot port size internal 32 bits pad driver load full drive strength PLL reference crystal boot select internal
97. d the lead fault threshold are large enough that the possibility of a 300 mV electrode polarization offset does not affect lead fault detection Note also that this lead fault detection scheme only tests those electrodes which are necessary to view a particular lead selection Therefore to view leads Il or Ill only RA LA and LL are needed The lead fault detection is indifferent to the state of the unnecessary RL and C electrodes 2 16 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation Front End Module 2 2 10 Pacer Pulse Electrosurgical Interference Detection It is necessary to detect pacer pulses so that the rate meter can be made unresponsive to them and so that enhancement of the pacer pulse can be indicated on the monitor display Electrosurgical interference is similar in nature to pacer pulses but while a pacer pulse occurs at a repetition rate related to the normal range of heart rates electrosurgical noise has much higher repetition rates due to rapid sparking at the active electrode Therefore a single circuit can detect both types of signal and categorize the detected event as a pacer or noise according to the repetition rate The detection circuit processes the ECG signal present at the Il and outputs The basis for detection of the pacer pulses is frequency the frequency content of a pacer being assumed to be higher than any normal physiologic signal The most difficult pacer to di
98. d to hold the signals high when the signal is low so that there is no confusion about signal information Furthermore R7 14 as well as R23 30 are current limiting resistors cleaning up the signal to the connectors The CPLD is programmed by a cable connecting a computer to the 6 pin header 9 Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 45 Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 Theory of Operation 2 15 2 15 1 2 46 Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 Overview The NIBP PCB utilizes a Motorola MC68HC16Z1 microcontroller This processor is responsible for controlling a pump and two valves in the generation of the patient pressure signal This pressure signal is generated non invasively using an inflatable cuff A Fujikura XFPM O50KPG P5 pressure transducer converts the pressure signal in the cuff to an analog voltage The pressure signal is sampled by an AD7714 24 bit ADC which interfaces to the microcontroller s QSPI port This data is processed by the HC16Z1 to determine the blood pressure using the oscillometric principle The results are then fed to the host via a RS 485 interface through the processor s SCI port During a measurement the HC16Z1 software inflates the cuff and then controls the pressure bleed rate using a linear valve The linear valve control allows the software to adjust the valve orifice to arrive at a nominal linear bleed rate of mmHg
99. d within the 860 The source is controlled by the MPC860T All signals are filtered with T Pole filter devices 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 1 21 2 1 22 2 1 23 2 1 24 2 1 25 CPU Control Module SYNC Connector J22 This connector provides the interface to an external device There is a provision for an analog input signal that is fed to the 10 bit A D converter that is contained with the Communication processor 9 16X1 In addition there is a re created analog output ECG OUT of the ECG waveform and blood pressure OUT Docking Connector J9 The docking interface connector provides the interface between the CPU Control module and the Base Station or a Comm Port The main purpose of the Base Station or Comm Port is to provide interface connectors and some interface circuitry that is not part of the CPU Control module It is not feasible or practical to include all the connectors on the CPU Control module itself The signal groups that are part of the docking interface are shown in the table below 3 3 Volt Power The 3 3 Vdc is generated by Synchronous Step Down Power Supply Controller 047 MAX767 and associated discrete components The input to the power supply controller is 5 Vdc and its output is 3 3 Vdc 5 at 750ma The controller operates a frequency of 300 Khz The current sense resistor R32 is connected to the controller using a Kelvin connecti
100. d without first disconnecting this cable Slide the power supply out of the rear of the monitor until the control cable connector is exposed Disconnect the control cable 5 Slide the power supply out of the rear of the monitor and remove N Removal of the Battery Holder Assembly 1 Be sure the batteries are removed from the battery holder assembly 2 Remove front housing assembly as stated in Paragraph A 3 Remove the main frame assembly as stated in Paragraph E 4 Remove the five screws that secure the housing to the back housing Be sure not to bend the ground plate 5 Lift and remove the battery holder assembly 0070 10 0441 Passport 2 Passport 2 Service Manual Repair Information Disassembly Instructions Ext Male 15 Pin D Sub to Female 15 Pin D Sub PART NUMBER LENGTH 0012 00 0852 01 6 feet Length 6 Open Ended to Female 15 Pin D Sub PART NUMBER LENGTH 0012 00 0852 02 25 feet 0012 00 0852 03 50 feet 0012 00 0852 04 100 feet 0012 00 0852 05 200 feet 0012 00 0852 06 300 feet 0012 00 0852 07 450 feet 0012 00 0852 08 600 feet 0012 00 0852 09 175 feet e kn LENGTH 4 6 HD 15S FEMALE CONNECTOR Passport 2 Passport 2 LT Service Manual 0070 10 0441 Disassembly Instructions Repair Information Ext Male 15 Pin D Sub to Male 15 Pin D Sub
101. device will be used for storing an electronic serial number ESN NIBP hardware version and byte checksum The ESN is a 32 bit long word starting in memory location O The hardware version information is one byte and follows immediately after the ESN in memory location 5 The checksum is also one byte and follows immediately after the hardware version info in memory location 6 This information can be programmed via J7 or off the board by removing the device from the socket This memory is hardware write protected by installing jumper J3 JMODE 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation Theory of Operation Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 The EEPROM will be programmed using a PC based program script to download hardware and software revision history The HC16Z1 software can detect bad sector data in the serial EEPROM using checksums which can be verified during initialization 2 15 16 Hardware Locks The EEPROM are hardware write protected by installing jumper J3 JMODE signal line Removing J3 will automatically remove the hardware write protection feature allowing the device to be written while in one of the auxiliary modes 2 15 17 Reset Low Power Reset U8 A Dallas Semiconductor DS1811 device monitors the PCB s VCC voltage and activates RST before it falls below 4 5V Since the HC16Z1 timing characteristics are specified with VCC at 5V 10 a valid VCC
102. e P N 0670 00 0730 or 0670 00 0746 01 2 45 2 16 SpO2 Interface Board Nellcor Nell 3 and Masimo 2 54 2 17 Power Supply 2 55 2 18 SpO2 UART Serial Interface 2 56 Passport 2 Passport 2 LT Service Manual 0070 10 0441 CPU Control Module 2 1 2 1 2 Theory of Operation CPU Control Module Overview This board has the main program and system controller for the Passport 2 It also contains the Communications Coprocessor PCMCIA interface RTC Audio CRT LCD controller Serial Channels and module bus interface connectors MPC860T Host CPU U2 Device U2 is a 860 Microcontroller which contains a PowerPC core 32 bit address and data bus Memory Controller 8 banks general purpose timers System Integration Unit SIU Multi Level Interrupts Communications Processor module SPI port 100 Mbit Ethernet Controller and a Dual PCMCIA interface Clock oscillator 1 5 Mhz is multiplied by the MPC860T s PLL circuit to achieve the 45 2 for Passport 2 There are six serial channels of which five are used Two are full 232 compliant and are used for external communications one is used for the Recorder module one is used to connect to the Instrument Radio and one is used for the Audio Synthesizer which goes to the Keypad Display connector
103. e transducer must be zero calibrated at OmmHg in order to operate the measurement duration timer This zero calibration must be performed at the time of manvfacture any time a transducer is replaced and as part of the yearly service routine for the NIBP module The BP provides a high level output signal which eliminates the need for an external amplifier circuit All that is required is a pull up resistor and compensation capacitor Adjusting trim pot R31 effectively zeros the transducer error With OmmHg pressure applied to the transducer input port R31 is adjusted until the output of the op amp 016 is 0 1V 1mV With a 100kW value for R30 a 3 60kW value for R29 and value for R31 the nominal gain to be used by the software for the over pressure channel is 12 44mV per mmHg The adjustment range is wide enough to cover 67 5mV transducer set point tolerance at the OmmHg calibration pressure 2 4 4 Over Pressure Detection There are two methods of keeping the pressure from getting too high The first method is the HC16Z1 software based monitoring of the pressure transducer PT1 When the software monitors pressure higher than 295mmHg in Adult mode 195mmHg in Pediatric or 145mmHg in Neonate mode the measurement cycle will halt and dump valve V1 and bleed valve V2 shall open to release the pressure in the cuff In the event of an over pressure condition that is not corrected by the HC16Z1 software and the measurement chann
104. e address does not match the SCI mode remains unchanged and the bus continues to be monitored for address characters only However if there is a match the SCI must immediately be placed in the normal receive mode so that the rest of the poll packet can be received and buffered The CRC is evaluated during reception If the poll packet CRC is valid the transmitter is enabled and SCI is used to transmit a pre buffered response packet Following this packet the transmitter is disabled and the SCI is returned to the Address Mark Wake Up mode Control of the transmitter is by means of peripheral select 3 Port PQS 6 which is brought low to enable the RS 485 transmitter Because of the high data transmission speed each of the phases of module bus communications is best handled through a separate ISR with the interrupt vector being changed for each phase This will result in faster response than could be achieved in a single ISR with conditional code The SCI must be the highest priority peripheral interrupt in the system due to the high communication speed 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 3 2 3 1 2 3 2 2 3 5 2 3 4 2 3 5 TFT Display Monochrome Interface Board and Keypad Board P N 0670 00 0686 or 0670 00 0726 TFT Display Monochrome Interface Board and Keypad Board P N 0670 00 0686 or 0670 00 0726 Overview This board provides interface and support for four di
105. e byte mode The specified access time for the Flash devices is 9Onsec and will therefore require 4 wait states Upon reset the MPC860T provides a boot chip select CS 0 which is hard wired to the flash memory to allow boot of the operating software The board support software must execute prior to any other external or internal hardware in order to function properly Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 3 CPU Control Module 2 1 6 2 1 7 Theory of Operation The Flash devices are provided a buffered reset by FET Q9 and associated components This reset signal is generated from the MPC860T s HRESET The reset is required to place the Flash devices internal state machine in a known state after power is applied for either fetching or programming Bank decoding is performed by a sub circuit of CPLD U1 and is dependent on the state of Address line A 8 in conjunction with active CSO DRAM Memory U8 U10 This memory is made up of two 4M x 16 devices which form a 4M x 32 byte memory array These memories are volatile as well as requiring special timing and control signals RAS and CAS to operate The type of DRAM is Fast Page Mode with an access time of 5 The special timing signals required are generated by an internal timing circuit contained in the MPC860T This timing generator is called Universal Programmable Machine There is another one called Universal Programmable Machine B UPMB
106. e control knob to activate the Leak Test FIGURE 6 15 Specification Leak rate should not exceed 10 mmHg 10 seconds for the target values of 250 150 and 50 mmHg 500 cc test chamber Specification Leak rate should not exceed 10 mmHg 14 seconds for the target values of 250 150 and 50 mmHg 700 cc test chamber Passport 2 Passport 2 LT Service Manual 0070 10 0441 6 13 Diagnostics 6 4 7 5 Calibration Procedure Dump Test Adult Neonate The purpose of this test is to verify the valve that control the and dump rate is functioning properly 1 Connect the dummy cuff test chamber to the side panel fitting 2 Rotate the control knob to highlight the dump test Once the dump test is highlighted press the control knob to activate the test 3 The chamber will inflate to 270mmHg of pressure Adult 170mmHg Neonate The dump valve will start to deflate at 260 Adult 150 Neonate after 10 seconds Adult 5 seconds Neonate the unit will dump the pressure to approximately 15 Adult 5mmHg Neonate On screen the result of the test will be viewed NIBP Tests Previous Menu Overpressure Voltage Setpoint Static Pressure Calibration All Off Motor Pump Test Leak Test 250mmHg Leak Test 150mmHg Leak Test 50mmHg Dump Test Adult Dump Test Neonate Bleed Rate Test Test Adult Overpressure Test Pediatric Overpressu
107. e side for future use Remove the NIBP Pump assembly and bracket from the Main Assembly by removing the two screws and placing the NIBP pump to the side d Remove the Rectus fitting from the left side of the monitor with a 0 25 hex nut driver e Remove the NIBP Cable assembly from the J1 connector of the NIBP module f Slide NIBP Module from the rear of the unit g Reattach the NIBP Cable to connector of the NIBP module J1 and place it on a protective surface h Reattach the Front Housing Assembly via the Interconnect cable Repower unit and enter NIBP Diagnostics 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure Diagnostics i Select down to NIBP Overpressure Voltage Adjust potentiometer R 31 on the NIBP Module and verify on screen the Overpressure Voltage is 0 100 volts FIGURE 6 11 Reassemble unit and verify proper operation B Specification with P N 0670 00 0730 0670 00 0746 01 No manual adjustment is required The voltage setpoint is controlled by software If Check Calibration Cuff Overpressure appears on the screen in message area replace the NIBP module accordingly C Specification 030 to 170 volts Passport 2 2 Service Manual 0070 10 0441 6 9 Diagnostics Calibration Procedure 6 4 7 2 Static Pressure Calibration The purpose of this test is to verity the pressure transducer sensitivity for optimal accura
108. efore the digital filter The respiration can be configured to sense impedance in either a lead or lead II RA LL axis by means of the Respiration Lead Select bit in Port A The respiration can be disabled by the Respiration Enable bit in Port A It is necessary to disable the respiration when the carrier might cause interference with other electromedical devices The table below summarizes the respiration control bits in Port A Invasive Blood Pressure An interface is provided for two standard 5mV mmHg V transducers This consists of a common excitation power source and a pair of differential amplifiers with lowpass filters one for each channel The excitation source is monitored by the 68HC16 ADC while the pressure waveforms are acquired by the MAX147 The frequency response can be modified by digital filters processing the acquired signals The excitation voltage is nominally 5 volts but tracks the ADC reference In this way the actual value of the ADC reference does not affect accuracy since the transducer is a ratiometric device The excitation source has current limiting which prevents the module power supply from being disrupted if the transducer excitation becomes shorted The excitation regulator s error amplifier output is monitored by the 68HC16 internal ADC This signal will abruptly jump to almost zero when the excitation source begins to current limit 0070 10 0441 Passport 2 Passport 2 Service Manual
109. el circuitry the over pressure channel serves as a fully redundant backup system to disable the pump and valves thus relieving the pressure in the cuff The hardware over pressure limit detect circuitry will deactivate the over pressure signal 12VEN cutting off power to the pump 1 and valves V1 and V2 reverting them to their normally open state independent of software This action places the NIBP PCB in a shutdown state that can be exited only by cycling the system power Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 23 NIBP Module P N 0997 00 0501 Theory of Operation 2 4 5 2 4 6 2 4 7 2 24 To achieve this secondary over pressure detection the PCB uses a pressure transducer PT2 separate from the measurement channel a secondary microprocessor 04 and power cut circuitry Q1 Q2 This circuit is also powered by a separate voltage T5V than used by the AD7714 and measurement transducer Pump M1 The pump control signal is provided via a PWM signal from the HC16Z1 microcontroller and is active high This signal switches MOSFET Q3 1 2 applying power to the pump motor Power to the pump 12VSW is supplied from 12V2 via Q2 This allows the pump to be disabled in case of a fault condition See section 1 1 1 3 Over Pressure Detection Dump Valve V1 The dump valve V1 is controlled by the VIEN signal provided by an active high signal from the HC16Z1 microcontroller This signal drive
110. ent phase the dump valve and linear valve are both fully opened to rapidly exhaust the residual cuff pressure 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation NIBP Module P N 0997 00 0501 2 4 2 Pressure Transducer PT1 A Fujikura XFPM O50KPG P2 transducer was selected for the measurement channel It provides a high level output signal which eliminates the need for an external amplifier circuit All that is required is a pull up resistor and compensation capacitor The P2 is screened to maximize performance in designs which will perform a zero cal before each measurement and a yearly span cal at 150mmHg near room temperature It also provides a nonlinearity specification beyond the screening limits which enhances performance Adjusting trim pot R81 changes the attenuation factor of the transducer output signal span calibration The nominal gain slope will correspond to the attenuation produced when the wiper is at the midpoint of its range With a 28 7kW value for R80 and a 2kW value for R81 the nominal gain to be used by the software for the measurement channel is 11 29mV per mmHg The adjustment range is wide enough to cover the 50mV transducer set point tolerance at the 150mmHg calibration pressure 2 4 3 Pressure Transducer PT2 The Fujikura XFPM O5OKPG BP transducer was selected for the over pressure channel Due to a transducer accuracy of x5 625mmHg over the entire pressure range the overpressur
111. er This warranty is expressly in lieu of any other express or implied warranties including any implied warranty or merchantability or fitness and of any other obligation on the part of the seller Damage to any product or parts through misuse neglect accident or by affixing any non standard accessory attachments or by any customer modification voids this warranty Mindray DS USA Inc makes no warranty whatever in regard to trade accessories such being subject to the warranty of their respective manufacturers A condition of this warranty is that this equipment or any accessories which are claimed to be defective be returned when authorized by Mindray DS USA Inc freight prepaid to Mindray DS USA Inc Mahwah New Jersey 07430 Mindray DS USA Inc shall not have any responsibility in the event of loss or damage in transit Calibration may be performed without the need to disassemble the instrument It is the responsibility of the purchaser to perform calibration as necessary in accordance with the instructions provided in this manual Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 11 7 17 7 18 Manufacturer s Responsibility Mindray DS USA Inc is responsible for the effects on safety reliability and performance of the equipment only if A assembly operations extensions readjustments modifications or repairs are carried out by persons authorized by Mindray DS USA Inc and B the electrical i
112. est by displaying the name of the key that was pressed 1 A blank key name will appear on screen 2 When a key is pressed the name of that key will be displayed in the key name window 3 Exercise each key to verify proper operation 4 Asecond window with blank boxes will be displayed on screen 5 When rotating the control knob the blank boxes will illuminate with each active detent 6 Press the PRINT key to print the test result on the local recorder 7 Press the NORMAL key and hold to return to the Diagnostics Test Menu Keypad Control Knob Test Control Knob Detent L JL o 0 gg Key Pressed None Press keys and the text will appear on screen Rotate the control knob to move the cursor Press and hold the Normal Screen to exit FIGURE 6 3 6 4 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure 6 4 3 Diagnostics Recorder Test Select the Chart Grid ASCII Characters menu The printer will print the Recorder Test pattern as shown in Figure 1 or Figure 2 Recorder Test Previous Menu Test Print Select to return to previous menu 10 243339999 m ZG 123323233 I ic NM q e 9 9 9 9 9 MO t sX uxw 30355555 99 CN max gt 0 5 gt 5 gt 5 OU OTXE XQ 53 gt N
113. ff using the output of a monostable timer driven from an astable timer By varying the duty cycle of the monostable timer the brightness of the display is controlled The higher the duty cycle the brighter the display is the lower the duty cycle the dimmer the display is The 12V2 voltage to the inverter is filtered by a LC low pass filter made up of L3 and C20 The goal of the low pass filter is to prevent the inverter s operating frequency from contaminating the 12V2 line Capacitors C57 and C58 were chosen for their low ESR and ripple current characteristics with the capacitance value being a secondary consideration Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 43 NEC 10 4 Display Keypad Interface Board 2 14 3 2 14 4 2 44 Operation of both timers begins with both RESET lines held high The first timer circuit operates in an astable mode The output of the first timer circuit is approximately 1 5ms with a 6776 duty cycle The period and the duty cycle are determined by R58 R56 and C11 The output of the first timer circuit is fed into the trigger input of the second timer circuit The second timer circuit begins it s operation on the falling edge of the input signal The duty cycle is determined by the value of R59 R61 and C12 The amplitude of the output is approximately 1 55 volts less than the power supply To obtain a 100 duty cycle J8 is unjumpered This disconnects the output of the monostable circuit
114. fferent displays an SPI interface to 4 X 8 matrix keypad optical encoder and LED s It provides connections for an external speaker and inverter for the display The EPLD Interface to the CPU Board VIA SPI The purpose of the CPLD 01 is to interface to and scan for key presses on the front panel keypad The method of communicating with the CPLD is the SPI port of the 68HC916X1 communications processor on the CPU control board 0670 00 0674 The SPI interface is a serial interface with separate serial data and clock Data can flow in either direction using the common clock The communications processor is set as the master device and the CPLD can only be a slave The method used to scan the keypad which is a 4 row J11 with up to 8 columns J10 is a walking zero pattern This means that 3 of the 4 row lines will always be a logic 1 with one line driven low In a complete cycle each line will sequentially be driven low driving a different row on the keypad Video display connections The J5 connector is the decoded video for the TFT color LCD monochrome display based on the board s configuration The 3 3 VDC input power requires additional filtering TFT Inverter Connection The inverter for the monochrome or TFT display is connected to J3 This inverter uses the filtered 12 2 voltage and is controlled via a 5V CMOS compatible signal Speaker connection The system speaker is connected to J2 The Interconnect Board functions a
115. fter the signal is brought back in range The baseline impedance is also monitored by a channel in the 68HC16 internal ADC When the baseline impedance exceeds about 4000 ohms patient plus cable resistors a high impedance flag must be set by the software This flag indicates that the respiration signal is no longer reliable When monitoring neonatal patients it is desirable to raise the highpass corner frequency to 0 2 Hz Since the analog filter is fixed this is done by refiltering the signal with a digital filter in software In the adult mode this digital filter remains active but is set to a very low corner frequency 0 0125 Hz Therefore the analog O 1 Hz filter dominates the response This relaxes the design constraints on the respiration filter and DC amplifier circuits as any residual offset voltage present in these stages is now removed by the digital filter even in the adult mode In the neonatal mode the digital filter is set to 0 155 Hz which produces a 0 2 Hz 3 dB point when cascaded with the analog filter A Mathcad document fully documents the digital filter Note that these filters are based on the 100Hz sampling rate Whenever software resets the analog filter the cascaded digital filter must also be reset or the baseline will not settle properly The assembler code shows the method of resetting the digital filter Note also that the detection of an offscale condition for reset generation must be done on the raw ADC data b
116. gnals and display logic power are supplied to the display via the J5 connector The video data and control signals are generated by the video controller IC on the CPU board 0670 00 0674 and input to buffer line driver ICs U7 amp U8 These ICs have 3 3V 5V logic compatible inputs and 5V logic compatible outputs These buffer line drivers provide the proper logic levels to the display regardless of the setting of the video processor s LCD interface and ensure proper drive capability Each video data and control signal line then passes through an RC low pass filter designed to match line impedance and thus reduce ringing There are two display ID signals going to the CPU board connector labeled VIDSEL1 and VIDSEL2 This generates the bit pattern for the NEC 10 4 display per the following chart TYPE VIDSEL1 VIDSEL2 NEC 10 4 Display 1 0 The 3 3V supply power to the display is filtered by a LC low pass filter made up of L4 and C64 The goal of the low pass filter is to prevent the display s operating frequency from contaminating the 3 3V line C59 was chosen for it s low ESR and Ripple Current characteristics with the capacitance value being a secondary consideration C61 was chosen for storing an amount of charge in order to maintain the voltage level for the LCD logic 2 14 2 TFT Inverter Interface The inverter for the TFT display is connected to connector J3 The inverter is powered by filtered 12V2 voltage and is turned on and o
117. he input and output to minimize leakage currents which may flow should the patient accidentally contact line voltage The patient s signals in the Patient Connector board must be isolated to the same degree as the power supply and the ground Provide Mating for ECG Temperature and two IBP connectors The patient cable is attached to the monitor at the Patient Connector board From the connector board the signal flows to the Fron End module where the bulk of the ECG processing is performed the transducers are plugged into the monitor via the Patient Connector board The Connector board bridges the excitation and ground of the transducers together then passes the signals to the main board Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 31 Patient Connector Board H P Theory of Operation 2 6 7 2 6 8 2 32 0670 00 0680 01 This module is responsible for acquisition of most of the patient safety isolated signals namely the ECG Temperature and two channels of Invasive Blood Pressure connectors IBP1 and IBP2 The Connector board collects all of the individual patient cables into a single ribbon cable then passes the signals to the main board 0670 00 0680 02 This module is responsible for acquisition of the patient safety signals namely the ECG and the Temperature This module is without the dual 12 pin connectors for the IBP The Connector board collects all of the individual patient cables into a single ribbon cable
118. he base station or comm port system SCC2 will operate in the standard UART mode with all hardware control lines available SCC3 This channel is assigned to the Instrument Radio on connector J15 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation CPU Control Module SCCA This channel is assigned to the serial Recorder It operates at logic levels and is connected to Recorder Connector J8 SCCA will operate in the standard UART mode with all hardware control lines available There are two Serial management Channels called SMC s that are part of the MPC860T s Communication Processor Module The following describes the function of each of them Not used Pins used as general purpose 2 This channel is assigned to Audio The audio circuit is composed of three integrated circuits Wave Table Music Synthesizer a 24 Bit Stereo D A Converter and a one watt Power Amplifier It operates at 3V logic levels and is connected to the Keypad Display J5 SMC2 will operate in the standard UART mode with no hardware control lines available 2 1 3 Fast Ethernet Controller The MPC860T includes a 10 100 Ethernet channel The fast Ethernet Controller is implemented independently providing fast Ethernet connectivity without effecting the performance of the CPM Full duplex 100 Mbps operation is supported at a system clock of 45 Mhz and higher A 25 Mhz system clock supports 10 Mbps operation or
119. her processor in this implementation and therefore the software must be designed so as to avoid the possibility of concurrent access by both processors to an identical location The device is used for inter communication between the main processor MPC860T U2 and the communication processor MCF5282 U22 Refer to the Module Bus Protocol Specification See Appendix The implementation uses the interrupt function There are two flags one for each side of the DPRAM A memory location within the DPRAM is assigned to each flag The interrupt line to the MPC860T is asserted when the MCF5282 writes to memory location CS1 0x0000 O7FE In order to reset this interrupt flag the MPC860T must access memory location 53 0 0000 OFFE Similarly the interrupt line to the MCF5282 is asserted when the MPC860T writes to memory location CS3 0 0000 OFFF In order to reset this interrupt flag the MCF5282 must access memory location CS1 0x0000 O7FF Please note that in addition to the flag functions described above these two addresses are valid memory locations and may be used for message passing A 5V to 3 3V conversion is performed with 0777 This is to protect the DPRAM which cannot have 5V logic on any of its pins even if it is not accessing the bus Audio Generator Circuit U12 U27 U13 The audio circuit is composed of three integrated circuits Wave Table Music Synthesizer a 24 Bit Stereo D A Converter and a one watt Power Amplifier U
120. ility of the PIC16 device s function as an over pressure detector sleep mode will not be utilized This prevents the possibility of the part becoming stuck in the sleep state Memory Flash Memory The program code will be stored in an Intel 28F400B5 4Mbit flash memory The flash device specified has the boot sector located at the bottom of the memory map at address 00000H where the HC16Z1 expects to find the reset vectors Although the flash device requires additional power with CE tied low this prevents the need for decoding logic where board real estate is limited Besides storing program code other unprotected sectors of the flash memory may be used to store less critical nonvolatile data if required This would require dedicating an entire flash sector for that purpose However due to small 8K byte parameter blocks in the flash this is not a gross waste of memory resources and prevents the need for an additional device CMOS Static RAM The CMOS SRAM is composed of two Sony CXK58100AM 128k word x 8 bit parts each with its own chip select signal CSRAMLB and CSRAMHB connected to the CS1 pins The HC16Z1 R W signal is used to activate the SRAM WE pins while the pins are held low and the 2 pins are held high to default the part to the read mode Although this much memory is unlikely to be needed during normal operation it will help when updating the flash in the field from the host During this process the HC16Z1 progra
121. ion must reduce these peak loads to less than 1 Amp with a maximum voltage ripple of 0 5VDC Fan Controller The digital control provided by the 860T I O pin operating as a output is conditioned by R5 amp C7 This signal is then applied to the gate of Q1 which provides the drive control The fan is low line controlled with the fan return being connected to the FET source pin In series with the 12V2 is RT 30 ohm resistor that limits the fan voltage to approx 9 and reduces the fan noise When fan operates on 12VDC it draws 100 typical Fan Sense The Tach generator TG generates two cycles of square wave per rotation of the fan motor The square wave is then converted to a Digital logic level which turns on Q2 02 output is driven to Digital Logic low The 860T uses this level to sense if the fan is functional If FTACH goes to Digital logic High The 860T will drive the FAN CNTRL to Digital logic low turning off Q1 FET removing Digital Ground from the Fan and turning it off Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 33 XE 50 Recorder Interface Board Theory of Operation 2 9 29 1 2 9 2 2 9 3 2 9 4 2 34 XE 50 Recorder Interface Board Cooling Fault The Cooling Fault signal is driven by an FET Q2 to the CPU to alert the CPU that a cooling fault has occurred A Cooling Fan Failure message will be displayed on the unit The fault can be cleared if there is no obstruction in the fan by c
122. isplay to the left and right rails 8 Lift the LCD EL display up and out to remove Removal of the Passive Display 1 Remove the Passive Panel Keypad Panel Board as stated in Paragraph B 0070 10 0441 Passport 2 Passport 2 Service Manual Repair Information Disassembly Instructions 2 Remove the 2 screws that secure the Inverter bracket assembly 3 Remove the 2 screws that secure the right mounting rail 4 Remove the screw that secures the choke mounting bracket 5 Remove the screw that secures the left mounting rail 6 Remove the screw that secures the lower mounting bracket 7 Lift the Passive display up and out and remove Removal of the Main CPU board Main Frame 1 Remove the front housing assembly as stated in Paragraph A 2 Remove the NIBP Pump assembly and bracket as stated in Paragraph F 3 Remove the 8 screws that secures the metal shield to the back housing 4 Remove the Power Supply assembly from the rear of the unit as stated in Paragraph M dod the Power Supply is removed carefully lift the Main CPU assembly up about one 5 Disconnect the Recorder cable from J8 6 Disconnect the connector J13 power switch 7 Disconnect the connector from J 23 CO module 8 Disconnect the SpO2 connector from the SpO2 board assembly Masimo or Nellcor 9 Disconnect the connector J203 Panel board 10 Carefully lift the CPU board assembly from the back housing 11 Carefully angle and lift the CPU b
123. istor R58 to the non isolated 5V supply and drives the enable pin of transceiver U28 through U100 The data communication consists of brief data packets which occur at low duty cycle Therefore the communications lines spend much of the time in the idle state Further the ETRIG signal is also active only on for very short periods The ETRIG signal is applied through a series resistor R864 to Q207 so that it may drive on or off the LED portion of optocoupler U233 with the current being set by R65 The output of the optocoupler is furnished with pullup resistor R72 to the non isolated 5V supply and directly drives two inverters U100 Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 39 El Display Interface Board Theory of Operation 2 12 2 12 1 2 12 2 2 40 El Display Interface Board Overview This board provides interface and support for the EL display an SPI interface to a 4x8 matrix keypad optical encoder and LED s It also provides connection for a speaker Detailed Description CPLD Interface to the CPU Board Via SPI The purpose of the CPLD U1 is to interface to and scan for key presses on the front panel keypad The method of communicating with the CPLD is the SPI port of the 68HC9 16X1 communications processor on the CPU control board 0670 00 0674 The SPI interface is a serial interface with separate serial data and clock Data can flow either direction using a common clock The communications p
124. k EO ER Sa 2 24 linear Valve edite b reet bes oo d edet eost redes 2 24 Primary Microcontroller eire 2 25 Secondary Microcontroller UA u aku tete tt ec tt de e fae het 2 25 Voltage SourceS uM EDI 2 27 LM 2 28 P tient Connector Board tede tet e ete ede ate edid fee cages etas de etti eade d 2 29 Spark Gap Suppressor EH ss 2 29 Neon Bulbs serie eto OG NEAN GE RD MS E OE uus 2 29 a 2 29 EMI SUBDIeSSOR asa Gu 2 29 Patient and Power Isolation 5 iere iet tee 2 29 Provide mating for ECG Temperature and two IBP connectors sss 9 2 29 06 0 00 0682 01 eee PE eR E e ede poeta 2 30 0010 00 068202 5 Feet restet ecd oe E er ee 2 30 Patient Connector Board ir eee ee e ede eed eg 2 31 Spark Gap Suppressor Neon Bulbs Low Pass Filler eet ede ete ee a i iN EMISUppressor acc tices acu ive Dues eU an e De dua ete dae XR Re Od beu ENSE gates Patient and Power Isolation tete te c RR 2 31 Provide Mating for ECG Temperature and two IBP
125. l 0070 10 0441 Passport 2 Passport 2 LT Service Manual Preventive Maintenance Warranty 7 16 2 International excluding North America Mindray DS USA Inc warrants that its products will be free from defects in workmanship and materials for a period of two 2 years from the date of purchase except that disposable use products are warranted to be free from defects in workmanship and materials up to a date one year from the date of purchase or the date of first use whichever is sooner This warranty does not cover consumable items such as but not limited to batteries external cables sensors cuffs hoses or mounts Mindray DS USA Inc shall not be liable for any incidental special or consequential loss damage or expense directly or indirectly arising from the use of its products liability under this warranty and the buyer s exclusive remedy under this warranty is limited to servicing or replacing at Mindray DS USA Inc s option at the factory or at an authorized Distributor any product which shall under normal use and service appear to the Company to have been defective in material or workmanship No agent employee or representative of Mindray DS USA Inc has any authority to bind Mindray DS USA Inc to any affirmation representation or warranty concerning its products and any affirmation representation or warranty made by any agent employee or representative shall not be enforceable by buy
126. l lug of the monitor on the rear of the monitor Passport 2 Passport 2 LT Service Manual 0070 10 0441 6 21 Verification 6 5 10 1 6 22 2 Calibration Procedure Perform the tests under the following conditions a Case Grounded Normal polarity Normal polarity with open neutral b Case ungrounded Normal polarity Normal polarity with open neutral Reverse polarity Specs Verify the current reading of the test is less than 100 pA under normal operating conditions Less than 300 pA under a single fault condition for 120 VAC and less than 500 pA under a single fault condition for 230 VAC Patient Leakage Lead to ground Sink Current Patient circuit Test V Model 431 Dempsey patient leakage with line voltage on leads Connect the ground wire from the safety analyzer to the equipotential lug of the monitor Connect the ECG cable from the Analyzer to the monitor On the safety analyzer depress the Apply 115 VAC button and note the reading Repeat the test for normal and open ground polarity combinations Specs Verify the current readings of the test are below 50uA under a single fault condition NOTE Including 12 Lead 0070 10 0441 Passport 2 Passport 2 Service Manual 7 0 Preventive Maintenance 7 1 Preventive Maintenance Schedule 7 2 Mechanical Physical Visual Inspection 7 2 1 Perform at Twelve Month I
127. lt Dump Test Neonate Bleed Rate Test Overpressure Test Adult Test Pediatric Test Neonate Press the control knob to activate the Motor Pump Test FIGURE 6 14 Specification Pump to 300mmHg lt 35 0 seconds 500 test chamber Specification Pump to 300mmHg lt 49 0 seconds 700 test chamber 6 12 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure Diagnostics 6 4 7 4 Leak Test 250mmHg 150mmHg 50mmHg The purpose of the leak test is to verify the leak rate of the pneumatic components 1 Connect the dummy cuff test chamber to the side panel fitting 2 Rotate the control knob to highlight the leak test Once the leak test is highlighted press the control knob to activate the test 3 The chamber will inflated to 250 150 or 50 mmHg of pressure After ten seconds the pressure on screen the pressure is released During this ten second period the monitor will determine the leak rate and display the total drop in pressure for that period NIBP Tests Previous Menu Overpressure Voltage Setpoint Static Pressure Calibration All Off Motor Pump Test Leak Test 250mmHg Leak Test 150mmHg Leak Test 50mmHg Dump Test Adult Dump Test Neonate Bleed Rate Test Overpressure Test Adult Qverpressure Test Pediatric Overpressure Test Neonate Press th
128. m code must reside in the SRAM with additional room available for buffering data received from the host 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 4 12 2 4 13 NIBP Module P N 0997 00 0501 CMOS EEPROM The HC16Z1 also has access to a National Semiconductor NM25C020 2k bit serial EEPROM through its QSPI port This EEPROM device may be used for storing PCB identification codes or any other non volatile information Although a potentiometer is currently included in the circuitry to allow span calibration of the measurement channel the EEPROM could optionally be used to store span calibration values for a software calibration scheme The HC16Z1 software can detect bad sector data in the serial EEPROM by storing checksums which can be verified during initialization Voltage Sources The PCB is fed 12V and 5V VCC from the host through connector J1 VCC is used to power the PCB s digital circuitry It is also used to generate a 2 5V reference signal 25VR using a Maxim 6125 2 5V reference 011 VCC can alternately be applied through J7 during in circuit programming or debugging procedures VCC shall not be applied to both connectors simultaneously VPP is applied through JZ as the programming voltage for the PIC16 A switched version of 12V2 12VSW is generated by Q2 and is used to drive the electro mechanical components This switch allows these components to be de energized by the
129. m the Docking connector J9 using live insertion an interrupt IRQA is generated When a Comm Port which is not hot swappable is powered up with a Passport 2 monitor the module ID is read by software and is in the flow of the start up code This reading of the module ID upon power up is automatic and is not dependent on whether there is an IRQA or not or if a base station or Comm Port is connected Therefore a duplicate IRQ4 which may be generated by the modules upon power up is redundant This IRQA interrupt is falling edge triggered and can be sourced only when IRGB is previously low and IRGA then follows and goes low The state diagram for the IRQA IRGB logic is such that IRQB must be low prior to IRGA falling edge In the Comm Ports IRGB is tied to GND and IRQA is driven low after the circuitry becomes active thus the condition is met In the base station IRQB is driven low whenever there is power applied to the base station and IRQA is driven low whenever the base station is powered AND the monitor s 3 3V power is within regulation again meeting the condition IRQA and IRQB J9 17 19 67 are both generated external to the CPU board Components involved in the state control logic on the CPU board affecting the rise time of IRQA and IRQB are components R185 R174 C427 and D9 U64 is used to generate IRQ4 The signal that enables U44 to drive the Module ID field onto the data bus is MODIDCS active low
130. mbly Nellcor SpO 0012 00 1356 34 PCB Masimo MS 3 SpOs Module 0671 00 0055 35 Cable Masimo Module to Main CPU 0012 00 1201 36 Spacer 0361 45 0403 37 Cable Assembly Masimo SpO gt 0012 00 1308 38 Battery Holder Assembly metal SLA 0997 00 0502 38 Battery Holder Assembly plastic SLA 0997 00 0972 01 38 Battery Holder Assembly plastic Li ion 0997 00 0972 02 39 Power Supply Charger Assembly SLA 0014 00 0190E 39 Power Supply Charge Assembly SLA 0014 00 0250 39 Power Supply Charge Assembly Li ion SLA 0014 00 0251 40 Button PCMCIA Slot B 41 Cable Module to Main CPU Bd MediCO 0012 00 1200 41 Cable Module to Main CPU Bd miniMediCO 0012 00 1683 01 NS Double Sided Tape 0215 00 0115 42 Screw Pan Hd Nylon 4 40 x 0212 01 0404 43 Screw Pan Hd 6 x 1 0212 12 0620 44 Screw Pan Hd x 5 16 0212 12 0405 45 Paper Holder Recorder Door 0352 00 0051 46 Recorder Assembly AR 42 special 0683 00 0465 01 46 Recorder Assembly XE 50 0683 00 0501 01 46 Recorder Assembly XE 50 0683 00 0501 02 0998 00 0170 S N 20000 or higher 0998 00 0900 S N 503000 or higher 46 MR Recorder 0161 00 0024 AZ Recorder Plate Blank 0370 00 0017 03 48 Recorder Plate Blank XE 50 0380 00 0482 02 49 MediCO Module Assembly Oridion 067 1 00 0164 03 49 miniMediCO Module Assembly Oridion 067 1 00 0089 01 50 Retainer C Clip 0226 00 0018 51 Screw
131. measurement transducer An over pressure test shall be performed yearly through service diagnostics to verify the circuit is operating within the prescribed parameters Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 49 Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 Theory of Operation 2 15 9 2 15 10 2 15 11 2 50 Pressure Transducer PT2 The Fujikura XFPM 050KPG BP3 transducer was selected for the over pressure channel Due to a transducer accuracy of 5 625mmHg 67 5mV set point tolerance at the OmmHg over the entire pressure range the overpressure transducer must be zero calibrated at OmmHg in order to operate the measurement duration timer This zero calibration is automatically performed by the software resident in the secondary Atmel microcontroller 04 The PT2 provides a high level output signal which eliminates the need for an external amplifier circuit All that is required is a pull up resistor and compensation capacitor The transducer has an output transfer characteristic of 12mV mmHg but due to a small gain generated by a 100kW value for R30 and a 3 60kW value for R29 in the negative feedback loop of the op amp 016 the transfer characteristic to be used by the software for the over pressure channel is 12 44mV mmHg With OmmHg pressure applied to the transducer input port the output of the op amp 016 is approximately 100 Given the set point tolerance of 67 5mVat OmmHg the main
132. mine the warranty status of a particular instrument Warning The Passport 2 operates on line voltages Therefore an electric shock hazard may exist when the instrument covers are removed Repair and calibration procedures should only be performed by qualified personnel who proceed with care and follow proper servicing techniques Warnings are given in Chapters 4 and 7 as well as in other appropriate locations Passport 2 Passport 2 LT Service Manual 0070 10 0441 v Introduction Warning This page intentionally left blank vi 0070 10 0441 Passport 2 Passport 2 Service Manual 10 Operation 1 1 Introduction 1 1 1 2 Controls Indicators And Connectors 1 2 1 3 Operation sese 1 2 1 1 Introduction Sections 1 2 and 1 3 are intentionally left blank Please refer to the Operating Instructions for complete details OPERATING INSTRUCTIONS PART NUMBER For software version V x amp earlier Domestic 0070 00 0440 01 International 0070 00 0440 02 For software version V x amp later Domestic 0070 00 0649 01 International 0070 00 0649 02 Passport 2 Passport 2 LT Service Manual 0070 10 0441 Controls Indicators And Connectors Operation 12 Controls Indicators And Connectors THIS SECTION LEFT INTENTION
133. n Batteries Battery 1 dq To Battery Charge Battery 2 Connector J21 SLA Batteries Battery 1 0146 00 0043 To Battery Charge Li Battery 2 gt Connector J21 0146 00 0043 921 Battery Charge 0670 00 0739 03 Available for all units P N 0670 00 0782 03 Use on P N 0998 00 0900 XXXXX Input Output Port J9 Ts To Co2 Exhaust Connector Co2 Input Connector Flow Spo Interface Board P N 0670 00 0696 or P N 0670 00 0785 01 02 Spo2 Module Nellcor Cable P N 0012 00 1356 To Spo2 Connector Nellcor Nellcor Nellcor P N 0671 00 0162 Interface or 0671 00 0242 Cable P N 0012 00 1233 du Rn Spo2 Module Masimo Masimo P N 0671 00 0055 or pensa P N 0040 00 0383 w Co2 P N 0012 00 1201 Spo2 Interface e Board Spo2 P N 0670 00 0785 03 DS 100A To Spo2 Connector Masimo Cable PIN 0012 00 1308 P N 0670 00 0680 xx HP P N 0670 00 0682 xx Front Panel is Panel Board Cable J1 z N TFT MC Keypad Panel Board EL Keypad Panel Board PIN 0670 00 0714 45 Passive Color EL Keypad Panel Board J5 PN 67000 1137 J0 Jii 4 LCD us Encoder Cable PIN 0311 00 0132 Pm
134. n Procedure 1 GalibrationInIrodUctloh sioe im e oe I cu e cer Wearning and Guidelines aee t Test Equipment and Special Tools Required Description 91279 ier De Diagnostic Test MENU s qumay om act Keypad Control Knob Testi ccs cet een ehe er nea oae d o Cen in ea aae aea odo een o Recorder Nests cues oT m oett ee to Re m d ec em Display Tests Pixel EE EE Color Test SLT ete dye ent a pe gre ai ad NIBP ie EE Verification mM Initial SekUp t ECG Tests moe E and lBP 2 Verification tp p REF HR Temperature Verification i anna SpOs Verification NIBP Verification ss l Battery Operation Verificati n u ee Rr rh e e Ar rt RC RO NER Battery Bacleup Verification wc eee i d aded ee deinen o e e e aede CO Operation Verification leakage Current m Preventive Maintenqance
135. n series with the coupling capacitors The cable resistors absorb the remaining defibrillator voltage Neon Bulbs This board provides defibrillator overload protection in conjunction with the front end board The neon bulbs have a breakdown voltage range 60 v to 75 Volts The patient s ECG and Respiration signals pass through the neon bulbs which suppresses the defibrillation pulses Low Pass Filter The patient cable is attached to the patient connector board The ECG signal and the respiration signal pass through the HP connector J1 This board contains 3 LC Low Pass Filters with a minimum roll off frequency of 17 MHz cutoff frequency of 23 MHz EMI Suppressor The temperature probe connects to a three circuit phone jack connector on the Patient Connector board The temperature circuit provides high precision measurements of the thermistor resistance while using a minimum of precise components This module also features electrosurgical interference suppression ESIS and EMI suppression The Connector cable is used to reduce Conducted Susceptibility and Radiated Susceptibility induced by the high frequency fields The module serves simply as a connector the signals pass through efficiently and with minimum loss Patient and Power Isolation This power supply requires sufficient isolation between the input and output to withstand the voltage of a defibrillator up to 2 5 kVrms Further it requires low capacitance between t
136. nal line high Since the valves are normally open turning off their power will vent any cuff pressure to atmosphere The PIC16 then remains in the emergency shutdown state until the system s power is cycled Note a software reset issued from the HC16Z1 and asserting RST will have no effect on releasing the PIC16 from the shutdown state Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 25 NIBP Module P N 0997 00 0501 Theory of Operation 2 4 10 24 11 2 26 The uses an external reference voltage T5V Since T5V is the same voltage source that is powering the ratiometric transducer direct ADC readings represent the pressure In addition to the input signals MODE2 0 and the PIC16 also has the 2 5V reference voltage 25VR applied to its A D inputs This signal is used as an back door verification of the T5V reference voltage Since 25VR is generated from a separate supply than T5V and since T5V is also used as the ADC reference voltage if the T5V reference voltage were to fail the ADC would read full scale when comparing 25VR to the ADC reference T5V The PIC16 device includes brown out reset circuit which guarantees the device is reset when VCC is below 3 7V As long as the PIC16LC version is used the device is guaranteed to be reset if its minimum allowed supply voltage is not present This brown out reset is required since the PIC16 is not connected to the HC16Z1 RST To increase the reliab
137. nal voltage appearing on AIN2 That is the ADC gain error pivots at 2 5V The trim pot R81 on the other hand adjusts for gain error which pivots at OV and will not correctly account for ADC gain error without a corresponding change in the offset value This leads to an iterative process for adjusting ADC gain error and offset The input buffer reduces the input range below what is required so the BUFFER control pin is tied low to short out the internal buffer 47 Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 Theory of Operation 2 15 4 2 15 5 2 15 6 2 15 7 2 48 R15 and R27 are 0 1 tolerance 25 resistors which form a highly accurate and stable voltage divider generating the AD7714 2 5V reference voltage from A5V Since the PT measurement channel transducer output is ratiometric with A5V the AD7714 readings are directly proportional to the applied pressure after subtracting the zero offset The DRDY signal is used to indicate to the HC16Z1 software that the converted data is available The AD7714 s POL input is tied low so the HC16Z1 GSPI shall be configured in the master mode with its CPOL bit set to O and its CPHA bit set to 1 for ADC data transfers The nominal ADC clock rate is 2MHz DAC The linear valve s bleed rate is current controlled by the HC16Z1 software by writing to a Maxim MAX5352 12 bit DAC U12 connected to a Burr Brown OPA336 CMOS operational amplifier 013 in turn
138. ncoder and LED s It also provides connection for a speaker Detailed Description CPLD Interface to the CPU Board VIA SPI The purpose of the CPLD 01 is to interface to and scan for key presses on the front panel keypad method of communicating with the CPLD is the SPI port of the 68HC9 16X1 communications processor on the CPU control board 670 00 0674 The SPI interface is a serial interface with separate serial data and clock Data can flow in either direction using the common clock The communications processor is set as the master device and the CPLD can only be a slave Video Display Connections Connectors J12 J13 and J14 are for the passive display J12 and are connectors for the display data lines and power J14 is for the inverter Data Lines LDO through LD7 and UDO through UD7 originate from the video processor and are driven by 5V logic from the FCT162373T buffer line driver The data lines are terminated with 61 9 ohm resistors and filtered with 68pF capacitors to ground to prevent ringing Speaker Connection The system speaker is connected to J2 The Passive Display Keypad Interface Board functions as a pass through for this signal Encoder Connection The optical encoder for the keypad is connected to JA Phase signals CHA CHB and switch contact signal SW are passed through the Passive Display 7Keypad Interface Board to an ADC on the CPU board VDD Control Circuit The board employs a P Channel F
139. nction There is an additional signal which is located on the connector IRQ3 which indicates when data can be sent This connector also provides an interface to the fan for control and monitoring There is a control line from the MPC860T to turn the fan on or off and a status signal that indicates if its functioning CO Interface Connector J23 This connector connects the Communications Processor Module Bus to the external CO2 module In addition power 5 Vdc 12V2 and ground are provided The digital signals are protected from ESD by capacitors C136 to C139 NIBP Interface Connector J25 This connector connects the Communications processor module bus to the external NIBP module In addition power 5 Vdc 12V2 and ground are provided Defib Connector J24 This connector provides the interface to an external Defibrillator is provided if serial communications is necessary There is a provision to accept a logic signal that is monitored by input PB 14 on the MPC860T There is a provision for an analog input signal that is fed to the 10 bit A D converter that is contained with the Communication processor 9 16X1 In addition there is a re created analog output ECG OUT of the ECG waveform and a ECG SYNC signal which is the E trigger from the front end electronics The SYNC signal which is the E trigger from the front end electronics or ECG_SYNC created by the 12 lead communications data from the Mortara car
140. nstallation of the relevant room complies with the appropriate requirements and C the equipment is used in accordance with the instructions for use Extended Warranty Mindray DS USA Inc warrants that components within the monitor unit will be free from defects in workmanship and materials for the number of years shown on the invoice Under this extended warranty Mindray DS USA Inc will repair or replace any defective component at no charge for labor and or materials This extended warranty does not cover consumable items such as but not limited to batteries displays external cables and sensors Recommended preventative maintenance as prescribed in the service manual is the responsibility of the user and is not covered by this warranty Except as otherwise provided herein the terms conditions and limitations of Mindray DS USA Inc s standard warranty shall remain in effect Preventive Maintenance Extended Warranty This page intentionally left blank Passport 28 Passport 2 LT Service Manval 0070 10 0441 7 13 0070 10 0441 0070 00 0441 Rev February 10 2014 Mindray DS USA Inc 800 MacArthur Boulevard Mahwah NJ 07430 USA Dom Customer Service 1 800 288 2121 e Intl Customer Service 1 201 995 8000 Dom Fax 1 800 926 4275 Intl Fax 1 201 995 8680 www mindray com Mindray Medical Netherlands B V Drs W van Royenstraat 8 Box 26 3870 Hoevelaken The Netherlands
141. ntervals 7 3 Preventive Maintenance Kit 7 4 Perform Verification and NIBP Calibration Annually 7 5 Perform Verification and Calibration Annually 7 6 User Preventive Maintenance Introduction 7 7 Care And Cleaning Of The Monitor 7 8 Care and Cleaning of SpO Sensor 7 9 Cleaning Sensors Adapters And Sampling Components 7 10 Sterilization and Cleaning of Reusable Cuffs 7 11 Battery Replacement and Maintenance 7 11 1 Battery Replacement 7 11 2 Battery Maintenance 7 12 Recorder Paper Replacement 7 13 Care and Storage of Thermal Chart Paper 7 14 How to Get Help 7 15 References 56 E DADE A Rk 7 16 Warranty 7 16 1 USA Canada Mexico and Puerto Rico 7 16 2 International excluding North America
142. nts CVP pg 40 44 August September 1978 Hanning C D Oximefry and Anesthetic Practice Pre Operative Intra Operative Post Operative and Critical Care Ohmeda BOC Health Care 1985 Form 8601M Hay William W Jr Application of Pulse Oximetry in Neonatal Medicine Ohmeda BOC Health Care 1986 1 13 pp Jennis Michael S and Joyce L Peabody Pulse Oximetry An Alternative Method for the Assessment of Oxygenation in Newborn Infants Pediatrics 79 4 April 1987 524 28 pp Nelson Cynthia M Everett N Murphy James Bradley and Robert H Durie Clinical Use of Pulse Oximetry to Determine Oxygen Prescriptions for Patients with Hypoxemia Respiratory Care 31 8 August 1986 673 80 pp Payne J P and J W Severinghaus editors Pu se Oximetry London Springer Verlag 1986 Rasanen Jukka John B Downs Donald J Malec Kenneth J Oates Oxygen Tensions and Oxyhemoglobin Saturations in the Assessment of Pulmonary Gas Exchange Critical Care Medicine 15 11 1058 51 pp Scheller MS and R J Unger The Influence of Intravenously Administered Dyes on Pulse Readings Anesthesiology 65 3A September 1986 A161 Sidi A W R Rush Paulis Gravenstein R F Davis 7he Effect of Fluorescein Indocyanine Green and Methylene Blue of the Measurement of Oxygen Saturation by Pulse Anesthesiology 65 3A September 1986 A132 pp 0070 10 0441 Passport 2 Passport 2 LT Service Ma
143. nual Preventive Maintenance References Staewen William CCE Apnea Monitoring Basics Biomedical Instrumentation and Technology July August 1991 Toledo Laura Worthington Pulse Oximetry Clinical Implications in the PACU Journal of Post Anesthesia Nursing 2 1 February 1987 12 17 pp Yount John M D Optimal Detection Sensitivity A Clinical Perspective AAMI 1984 Passport 28 Passport 2 LT Service Manual 0070 10 0441 7 9 Warranty 7 16 7 16 1 Preventive Maintenance Warranty USA Canada Mexico and Puerto Rico Mindray DS USA Inc warrants that its products will be free from defects in workmanship and materials for a period of one 1 year from the date of purchase except that disposable or one time use products are warranted to be free from defects in workmanship and materials up to a date one year from the date of purchase or the date of first use whichever is sooner This warranty does not cover consumable items such as but not limited to batteries external cables sensors cuffs hoses or mounts Mindray DS USA Inc shall not be liable for any incidental special or consequential loss damage or expense directly or indirectly arising from the use of its products liability under this warranty and the buyer s exclusive remedy under this warranty is limited to servicing or replacing at Mindray DS USA Inc s option at the factory or at an authorized Distributor any product which shall under no
144. oard assembly from the back housing 12 Disconnect the connector from J202 and remove SpO2 assembly 13 Remove the ten screws that secure the CPU board to the metal frame Removal of the NIBP Pump 1 Remove the Front housing assembly as stated in Paragraph A 2 Disconnect the tubing from the inline pump filter 3 Disconnect the connector from J8 4 Remove Pump assembly from holding bracket Removal of the NIBP Module 1 Remove the Front housing assembly as stated in Paragraph A 2 Remove the NIBP Pump as stated Paragraph F 3 Disconnect the cable from J1 4 Unfasten the NIBP fitting on the side of the back housing with a 1 4 inch nut driver 5 Slide the NIBP module from the rear of the unit carefully and remove Removal of the Masimo SpOs Module 1 Remove the Front Housing assembly as stated Paragraph A 2 Remove the Main frame assembly as stated Paragraph E 3 Remove the three screws that secure the Masimo SpO module to the standoffs 4 Remove the Cable assembly from J3 of the SPO Module 5 Lift the Masimo 5 2 Module up and remove Removal of the Module 1 Remove the front housing assembly as stated Paragraph A Passport 2 Passport 2 LT Service Manual 0070 10 0441 3 9 Disassembly Instructions Repair Information J K L 2 Remove the Main frame assembly as stated Paragraph E 3 Remove the Patient Connector Panel as stated in Paragraph J 4 Remove the two screws that secure the
145. of the 3 differential amplifiers are configured to acquire Lead and Lead The third amplifier is reconfigurable by means of an analog switch to acquire either V lead or Lead Ill The configuration of the amplifiers the driven lead is controlled by the two lead select bits 150 and 151 2 2 9 Lead Fault Detection Lead fault detection is performed by observing the voltage on the ECG amplifier inputs Due to the bias networks included in the lead buffers an open circuited electrode will develop a strong negative voltage The lead fault signal is then generated by the microcontroller which is actively monitoring the voltage via its A D converter In leads ll and the operation of the lead fault detection is very simple When all leads are attached both ECG amplifier inputs are approximately at the value of the drive amplifier bias voltage which is about 42 5 volts nominal This voltage is not sufficiently negative so no lead fault condition is indicated If one of the active electrodes becomes detached the voltage on the corresponding amplifier input swings to about 5 volts This is well beyond the threshold so a lead fault condition is indicated The effect is the same if either active lead is detached If the drive electrode becomes detached this is equivalent to both active leads being open so the operation is the same that the margins between the common mode voltage established by the drive amplifier an
146. on no current flow in sense lines The current limit is controlled by current sense resistor R32 12 Volts DC There is a limited requirement for 12 Vdc 30 ma max The supply voltage was created by using power inverter U51 LTC1144 operating at 1OKHz This device takes the 12V1 as an input and generates 12 10 as an output The 12 Vdc is used by RS 232 buffers U49 and U50 as well as Op Amp U101 Communications Processor and Support The Communications Processor is U22 a Motorola MCF5282 microcontroller operating in master mode The board pulls CPRCON low which causes the processor to enter this mode as it comes out of reset The internal 64 0 MHz clock is generated by the internal synthesizer from a 8 000 MHz reference crystal 600 The crystal operates with roughly sinusoidal waveforms and therefore generates less EMI than a square wave oscillator module To further minimize EMI and avoid the need for external pull up resistors all unneeded dynamic O pins are set as outputs and disabled This is performed at initial software boot up This also helps reduce power dissipation The purpose of the Communications Processor is to communicate with Passport 2 measurement modules such as NIBP Front End etc The communications is handled over a RS 485 module bus where the Communications Processor is the master and everyone else is a slave This processor also handles scanning the front panel keypad rotary knob and updating i
147. ong term exposure to natural or artificial U V sources may be detrimental 2 Storage Temperature and Humidity Keep the recordings in a cool and dry area for a longer lasting image Extreme temperature and humidity above 80 F and 80 humidity should be avoided 3 Solvent Reactions Do not store the recordings in plastic bags acetate sheet protectors or similar items made from petroleum products These products emit a small amount of vapor which will over a period of time deteriorate the image on the chart paper 4 Adhesive Tape Never place adhesive tape over recordings The reaction between the adhesive compound and the Chemical Thermal paper can destroy the image within hours 5 Archives We recommend that if long term archives are required make a photocopy of the recordings as back up Under normal office filing conditions the recordings should retain acceptable image quality for about five years 2 6 0070 10 0441 Passport 2 2 LT Service Manual Preventive Maintenance How fo Get Help 7 14 How to Get Help Prior to requesting service perform a complete operational check of the instrument to verify proper control settings If operational problems continue to exist contact the Service Department 800 288 2121 for assistance in determining the nearest field service location Please include the instrument model number software part numbers the serial number and a description of the problem
148. ould require dedicating an entire flash sector for that purpose However due to small 8K byte parameter blocks in the flash this is not a gross waste of memory resources and prevents the need for an additional device Due to the fact that the flash reset input is held active low by the DS1811 until VCC is at a valid level inadvertent flash writes are avoided during power cycling and brown outs In addition the flash WE signal defaults to the high state after reset and it is virtually impossible for the flash write protocol to be reproduced due to random levels The HC16Z1 software detect bad sector data in the flash by storing checksums which can be verified during initialization CMOS Static RAM U5 The SRAM is composed of one U5 Samsung K6R1016C1C 64k word x 16 bit part with two separate chip select signals CSRAMLB and CSRAMHB connected to the LB and UB pins respectively The HC16Z1 R W signal is used to activate the SRAM WE pins while the OE pin s are held low The CS signal is controlled by the UB and LB signals Although this much memory is unlikely to be needed during normal operation it will help when updating the flash in the field from the host During this process the HC16Z1 program code must reside in the SRAM with additional room ovailable for buffering data received from the host CMOS EEPROM U9 The HC16Z1 also has access to an Atmel AT25CO20 2k bit serial EEPROM through its QSPI port This EEPROM
149. pair Some of the requirements satisfied by the design are 8KB SRAM and 96KB Flash EEPROM The SRAM is used for the BOOT RAM stack and vector table The Flash is used for the run time code and satisfies the minimum of 64K but expandable to at least 96K for ST Arrhythmia and future growth The 96K is divided into 2 blocks 8K minimum for the bootloader code and 88K minimum for the application code The Flash has a bulk erase mode It is intended that the bootloader be erased and changed only at the factory while the application code can be reloaded in the field The Flash has a security register a protection register and a lock control bit all used to protect the boot code from accidental erasure For added protection a separate external program erase jumper J7 is supplied giving the capability to use jumpers for factory programming The jumper is connected to a general purpose and is only read by software in order to have permission to program the boot code The application code is that which actually runs the module following initialization and is field downloadable via the module bus The bootloader code performs basic initialization of the system then passes control to the application The bootloader also contains support for module bus downloads of the application code in the event the application code is corrupted or is to be updated The system can always recover from a failed download since the bootloader cannot
150. port 2 LT Service Manual 0070 10 0441 2 13 Front End Module 2 2 6 Theory of Operation Emulation capabilities and high level debugging are included using a JTAG port configured as a Background Debug Mode BDM connector A 26 pin header connector J204 is provided Hardware multiply and accumulate MAC functionality for implementing the digital software filters is provided No external hardware interrupts are required Memory Since the processor operates in the single chip mode only internal memory is used The device contains a ColdFire Flash Module which is constructed with eight banks of 32K x 16 bit Flash to generate a 512 Kbyte 32 bit wide electrically erasable and programmable read only memory array The CFM is ideal for program and data storage for single chip applications and allows for field reprogramming without external high voltage sources The voltage required to program and erase the Flash is generated internally by on chip charge pumps Program and erase operations are performed under CPU control through a command driven interface to an internal state machine All Flash physical blocks can be programmed or erased at the same time however it is not possible to read from a Flash physical block while the same block is being programmed or erased The array used in the MCF5282 makes it possible to program or erase one pair of Flash physical blocks under the control of software routines executing out of another
151. powered up once power is applied to the front end The 5V used in the patient analog section is supplied by a linear regulator U803 whose enable line is activated immediately upon power up Power being supplied to the SpO2 modules is created on the SpO interface board from 5 5V and 11V in order to eliminate any negative interaction resulting from shared regulated power 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 10 2 Power Supply On the Front End processor it is crucial during power up that VDD never exceeds VDDH by more than 0 3V Within the processor there are diode devices between the two voltage domains and violating this rule can lead to a latch up condition This is satisfied because it s 3 3V switching power supply runs off of 5 5V and has a slower startup while VDDH which also runs off of 5 5V is output from the voltage regulator which comes up almost immediately So VDD will never exceed Contingencies for enabling 5V and 5V by microcontroller were removed to satisfy the power up sequencing on the VDDH line Part Number 0014 00 0251 The power supply can operate off of an AC line a DC source from the Docking Station DS DC or two Batteries either Sealed Lead Acid or Lithium lon The power supply will automatically select the available power source based on a specified priority The power supply provides 5V and 12V regulated DC output voltages The
152. ppressor The temperature probe connects to a three circuit phone jack connector on the Patient Connector board The temperature circuit provides high precision measurements of the thermistor resistance while using a minimum of precise components This module also features electrosurgical interference suppression ESIS and EMI suppression The Connector cable is used to reduce Conducted Susceptibility and Radiated Susceptibility induced by the high frequency fields The module serves simply as a connector the signals pass through efficiently and with minimum loss Patient and Power Isolation This power supply requires sufficient isolation between the input and output to withstand the voltage of a defibrillator up to 2 5 kVrms Further it requires low capacitance between the input and output fo minimize leakage currents which may flow should the patient accidentally contact line voltage The patient s signals in the Patient Connector board must be isolated to the same degree as the power supply and the ground Provide mating for ECG Temperature and two IBP connectors The patient cable is attached to the monitor at the Patient Connector board From the connector board the signal flows to the Fron End module where the bulk of the ECG processing is performed the transducers are plugged into the monitor via the Patient Connector board The Connector board bridges the excitation and ground of the transducers together then passes the signals to
153. ption Digital Mercury manometer w bulb and valve 0 500 mmHg Netech Digimano Accuracy 0 25 Full Range Test Chamber Dummy Cuff P N 0138 00 0001 01 700 or 03 500 DVM Patient Simulator Digital Flow Meter e Calibration Gas P N 0075 00 0033 Calibration Gas Regulator P N 0119 00 0166 Safety Analyzer Dempsy Model or equivalent Flow Meter Sierra Instruments or equivalent 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure Diagnostics 6 4 Diagnostics To enter the diagnostic mode 1 Turn the power off 2 Press and hold the FREEZE key and turn the unit on The Diagnostics Main Menu will appear on screen Release the FREEZE key 3 Rotate the Control Knob to move the cursor up and down to the Diagnostics Main Menu Pressing the control knob will select the desired test and open the second menu for testing Diagnostics Main Menu Diagnostics Test Error Log System Information Press control knob to view Diagnostics Menu FIGURE 6 1 6 4 1 Diagnostic Test Menu Diagnostics Test Menu Previous Menu Keypad Control Knob Recorder Display X dis 25 ME d Select to return to previous menu FIGURE 6 2 Passport 2 Passport 2 LT Service Manual 0070 10 0441 6 3 Diagnostics Calibration Procedure 6 4 2 Keypad Control Knob Test When this menu is selected the unit will perform an echo t
154. re Test Neonate Press the control knob to activate the Dump Test FIGURE 6 16 Specification Dump Rate 260 to 15mmHg 10sec or less Adult 500cc test chamber Dump Rate 150 to 5mmHg 5sec or less Neonate 500 test chamber Specification Dump Rate 260 to 15mmHg 145 or less Adult 700cc test chamber Dump Rate 150 to 5mmHg 7sec or less Neonate 700cc test chamber 0070 10 0441 Passport 2 Passport 2 Service Manual Calibration Procedure Diagnostics 6 4 7 6 Bleed Rate Test The purpose of this test is to verify the valves that control the bleed rate is functioning properly 1 Connect the dummy cuff test chamber to the side panel fitting 2 Rotate the control knob to highlight the bleed rate Once the bleed rate test is highlighted press the control knob to activate the test 3 The chamber will inflate to 220mmHg of pressure The bleed rate valve will open and deflate the pressure for 10 seconds On screen the result of the test will be viewed NIBP Tests Previous Menu Overpressure Voltage Setpoint Static Pressure Calibration All Off Motor Pump Test Leak Test 250mmHg Leak Test 150mmHg Leak Test 50mmHg Dump Test Adult Dump Test Neonate Bleed Rate Test Test Adult Overpressure Test Pediatric Test Neonate Press the control knob to activate the Bleed R
155. real time clock and maintains SRAM information in the absence of system voltage When an out of tolerance 4 3 to 4 5 volt condition is detected the BQ4747 generates an interrupt warning The interrupt is fed to the IRQO input on the MPC860T This will allow 905 min to save any data to the non volatile SRAM 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 1 8 2 1 9 2 1 10 CPU Control Module Battery Backup SRAM U9 The SRAM is configured as 128K x 8 bits and is used to store system configuration settings These settings are required to be non volatile therefore the SRAM is battery backed up when system power is removed This is achieved by the battery output that is contained in the RTC module 07 and is outputted on pin 1 Dual Port RAM U604 U777 There is a high speed 2K x 8 Dual Port RAM with internal logic for inter processor communications The device has two independent ports with separate control address and pins that permit independent asynchronous access for reads to any location in memory However an attempt by one of the processors to access READ WRITE an address location at the same time the other processor is attempting to access the identical location results in a BUSY condition and results in a write inhibit to whichever side asserted the chip enable last Not all such accesses will be WRITE LEFT WRITE RIGHT The BUSY condition is not reported to eit
156. ree SpO modules The SpO interface board provides SCI UART host communication to the SpO gt modules It serves simply as an adapter The signals pass through unchanged The SpO interface board will be specifically configured for the SpO2 module it is interfacing with This may include different jumper settings different feedback resistor options custom ribbon cables etc Patient isolation is provided on the Passport 2 CPU Control Module so it is not needed on this SpO interface board 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation Power Supply 2 17 Power Supply The board employs one switching regulator and several linear regulators that provide power and eliminate ripple on the power supply lines There are separate enable lines for each of the power supplies Depending on which of the three SpO gt modules is installed this provides the capability to sequence the supplies upon power up It also allows the capability to shutdown the supplies and conserve power when the voltages are not necessary for the specified SpO module The input power is a semi regulated 5 5Vand 11V source and is used for generating the SpO power sources Several voltages will be generated locally including 5VAS Analog 5VDS Digital 12 15 5 5VAS Analog 15VS These will be used to power the SpO connectors The 15 and 12VS are created using U2 a high efficiency step up switching power
157. regulated 5 volt supply This is obtained from the 5 5 rail by a linear regulator U802 whose enable line is activated immediately upon power up A dedicated voltage reference device 0801 is used as the 2 5 reference voltage for the A D converter and other parts in the frontend The tolerance of this regulator 0 1 is fairly good In the case of the invasive pressure the transducer excitation voltage must track the 2 5V supply However because the transducer circuits are prone to being shorted as by spilling saline into a connector it is not advisable to directly use the 5 volt supply to excite the transducers Therefore a second power source a very accurate voltage regulator 1 0 U228 has been added for the pressure excitation A voltage comparison is performed by U223A and output as EXSTAT A compensation network consisting of C289 R323 and R957 is used In the event that the pressure excitation should be shorted out or overloaded 0228 will go into current limit or shutdown disabling the IBP function but the 5 volt supply from 0802 will not be affected so other functions will continue to operate The 3 3VD used for the microcontroller power is supplied by U805 a high efficiency step down switching power supply The power is created from the unregulated 5 5 and a soft start feature is implemented to aid the microprocessor to power up smoothly There is no enable capability for the 3 3VD since the microcontroller must be
158. rmal use and service appear to the Company to have been defective in material or workmanship No agent employee or representative of Mindray DS USA Inc has any authority to bind Mindray DS USA Inc to any affirmation representation or warranty concerning its products and any affirmation representation or warranty made by any agent employee or representative shall not be enforceable by buyer This warranty is expressly in lieu of any other express or implied warranties including any implied warranty or merchantability or fitness and of any other obligation on the part of the seller Damage to any product or parts through misuse neglect accident or by affixing any non standard accessory attachments or by any customer modification voids this warranty Mindray DS USA Inc makes no warranty whatever in regard to trade accessories such being subject to the warranty of their respective manufacturers A condition of this warranty is that this equipment or any accessories which are claimed to be defective be returned when authorized by Mindray DS USA Inc freight prepaid to Mindray DS USA Inc Mahwah New Jersey 07430 Mindray DS USA Inc shall not have any responsibility in the event of loss or damage in transit Calibration may be performed without the need to disassemble the instrument It is the responsibility of the purchaser to perform calibration as necessary in accordance with the instructions provided in this manua
159. rocessor is set as the master device and the CPLD can only be a slave Video Display Connections The J5 connector is for the EL display The EL display requires a 12V excitation voltage 5V to power the logic circuitry and can recognize the 3 3V logic levels Data lines LDO through LD7 are driven by 3 3V logic from the video processor and filtered with 68pF capacitors to 3 3V ground to prevent ringing Speaker Connection The system speaker is connected to J2 The EL Display Keypad Interface Board functions as a pass through for this signal Encoder Connection The optical encoder for the keypad is connected to J4 Phase signals CHA CHB and the switch contact signal SW are passed through the EL Display Keypad Interface Board to an ADC on the CPU board VDD Control Circuit The board employs a P Channel FET together with a Transistor to provide power switching for the EL display s 12V excitation The FET is controlled by the transistor which is switched on and off JTAG Connection The board is equipped with Connector 9 for in circuit programming of the Keypad Scanning CPLD 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 13 2 13 1 2 13 2 Passport 2 Passive Display Keypad Interface Board Passport 2 Passive Display Keypad Interface Board Overview This board provides interface and support for the Passive Display an SPI interface to a 4 x 8 matrix keypad optical e
160. s MOSFET 1 2 which switches power to the valve coil Power to the valve 12VSW is supplied from 12V2 via Q2 This allows the valve to be opened in case of a fault condition This valve is a normally open type so coil current must be supplied to cause the valve to close Linear Valve V2 The bleed valve V2 provides bleed down of the cuff pressure The HC16Z1 software maintains the pressure bleed rate at a nominal 6mmHg per second for product specified volumes and pressure ranges The linear valvecan also be used to control the pump up rate when small volume cuffs are used in the neonatal mode Note that this valve is a normally open type so coil current must be supplied to cause the valve to close The linear valve s bleed rate is current controlled by the HC16Z1 software by writing to a Maxim MAX5352 12 bit DAC U12 connected to a Burr Brown OPA336 CMOS operational amplifier U13 in turn connected to an International Rectifier IRF7303 Power MOSFET The DAC output voltage is divided by 5 which results in a full scale control voltage of 0 5V nominal which is applied to the opamp s U13 non inverting input A current sensing resistor R95 is used to generate a low voltage proportional to the linear valve current This voltage is fed back to the opamp s inverting input The opamp controls the Q FET gate voltage to maintain the desired current setting and corresponding valve orifice A5V is used to genera
161. s a pass through for this signal Encoder connection The optical encoder for the keypad is connected to J4 Phase signals CHA CHB and the switch contact signal SW are passed through the interconnect board to ADC on the CPU board Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 21 NIBP Module P N 0997 00 0501 Theory of Operation 2 4 24 1 2 22 NIBP Module P N 0997 00 0501 Overview The NIBP PCB utilizes a Motorola MC68HC16Z1 microcontroller This processor is responsible for controlling a pump and two valves in the generation of the patient pressure signal This pressure signal is generated non invasively using an inflatable cuff A Fujikura XFPM O50KPG P2 pressure transducer converts the pressure signal in the cuff to an analog voltage The pressure signal is sampled by an AD7714 24 bit ADC which interfaces to the microcontroller s QSPI port This data is processed by the HC16Z1 to determine the blood pressure using the oscillometric principle The results are then fed to the host via a RS 485 interface through the processor s SCI port During a measurement the HC16Z1 software inflates the cuff and then controls the pressure bleed rate using a linear valve The linear valve control allows the software to adjust the valve orifice to arrive at a nominal linear bleed rate of mmHg per second At the conclusion of the measurement a dump valve is opened by the software which allows the cuff pressure to rapidly blee
162. s the slope of the transfer characteristic The nominal slope will correspond to the attenuation produced when the wiper is at the midpoint of its range With a 28 7kW value for R80 and a 2kW value for R81 the nominal slope to be used by the software for the measurement channel is 1 1 29 mV per mmHg The adjustment range is wide enough to cover the 5OmV transducer set point tolerance at the 150mmHg calibration pressure ADC U2 The pressure signal is sampled by an Analog Devices AD7714 24 bit ADC which interfaces to the microcontroller s QSPI port The device must first be configured by using the AD7714 zero scale self calibration mode followed by the full scale self calibration mode From this calibration process offset and gain coefficients are determined that will be applied automatically by the AD7714 hardware NOTE Several samples must be read before the new coefficients are applied after a calibration The system zero cal is then performed If in the span calibration diagnostic mode the system zero cal is followed by the span cal NOTE A 90 second warm up period shall elapse prior to span calibration to account for transducer warm up drift It is also necessary to calibrate the ADC prior to system span cal otherwise the gain coefficient in the ADC will not be taken into account during the span calibration The ADC is used in the bipolar mode which causes the ADC gain error to be of opposite sign above and below the 2 5V nomi
163. screens in full illumination The colors are Red Blue Green and White FIGURE 6 9 Passport 2 Passport 2 LT Service Manual 0070 10 0441 6 7 Diagnostics 6 4 7 6 4 7 1 Calibration Procedure NIBP Tests The following tests requires an approved 700 Test Chamber P N 0138 00 0001 01 or 500 cc Test Chamber P N 0138 00 0001 03 to ensure proper test results Over pressure Voltage Test A Specification with P N 0997 00 0501 only The purpose of this test is to verify the Zero Point of the Over Pressure Transducer is set to 0 100 0 010 volts 1 Verify on screen that the Overpressure zero point is 0 100 volts x 0 010 NIBP Tests Previous Menu Qverpressure Voltage Setpoint Static Pressure Calibration All Off Motor Pump Test Leak Test 250 Leak Test 150mmHg Leak Test 50mmHg Dump Test Adult Dump Test Neonate Bleed Rate Test OQverpressure Test Adult Overpressure Test Pediatric Test Neonate Press the control knob to view the Overpressure Voltage Setpoint on screen FIGURE 6 10 2 IF the Overpressure zero point is out of specification follow the following procedure a Turn Unit off Remove the eight screws that secure the front and rear housing together Separate the front and rear housing Disconnect the interconnect cable from the TFT display board and remove the ground strap b Place the front housing to th
164. scriminate would therefore be one with the lowest slew rate that is the slowest rise time and smallest amplitude From the range of pacers defined in AAMI EC13 1992 this is a pulse amplitude of 2 mV and a duration of 2 ms The means of performing the frequency discrimination is shown in the figure below In order to identify the pacer or noise spike a window comparator U214 is used to detect when the output of U212 has a moderately high frequency content signal U212 provides rejection of the Respiration excitation carrier but permits passage of pacer signals Positive and negative input pins of this comparator are biased near half of the 45 rail voltages The threshold of the window is approximately 0 4 volts wide The comparator output network consisting of C246 and R261 provides stretching for narrow input pulses of variable width to output pulses having a wider width Since the window comparator is symmetrical the system works equally well for pacer noise pulses of either polarity The outputs open collectors tied together are used as the pacer flag connected to the microcontroller 2 2 11 Respiration Respiration is obtained through the ECG electrodes by impedance pneumography in which the AC impedance between a pair of the ECG electrodes is monitored This impedance varies with the chest motions associated with breathing The respiration signal consists of a small modulation on the order of 1 ohm superimposed on a much larger baseline
165. sed to control the pump up rate when small volume cuffs are used in the neonatal mode Note that this valve is a normally open type so coil current must be supplied to cause the valve to close 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 The linear valve s bleed rate is current controlled by the HC16Z1 software by writing to a Maxim MAX5352 12 bit DAC U12 connected to a Burr Brown OPA336 CMOS operational amplifier 013 in turn connected to an International Rectifier IRF7303 Power MOSFET The DAC output voltage is divided by 5 which results in a full scale control voltage of 0 5V nominal which is applied to the opamp s U13 non inverting input A current sensing resistor R95 is used to generate a low voltage proportional to the linear valve current This voltage is fed back to the opamp s inverting input The opamp controls the Q FET gate voltage to maintain the desired current setting and corresponding valve orifice A5V is used to generate a small offset voltage using R94 and R92 to insure the FET is fully off for a DAC code of 0 R95 is chosen to guarantee the full scale current fully closes the valve under worst case conditions including coil winding tolerance The IRF7303 MOSFET part Q6 was chosen due to its lead frame design which offers superior power dissipation capabilities As such the maximum junction rise
166. set to drive the pin low on timer match Low ISR latency is necessary to ensure that the pulse starts promptly upon pacer detection Timer Output Compare 2 Port CPA is used to define the E trigger pulse sent to the module bus E trigger pulse is initiated by the R wave detection software which also programs TOC 2 to terminate the pulse after the requisite width Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 19 Front End Module 2 2 15 2 20 Theory of Operation The other timer channel pins Port GP 5 7 are unused and should be configured as outputs to eliminate the need for termination However the associated internal timer channels may be used for software purposes such as the 2 ms data acquisition interrupt flash programming timer etc Data Packets The data communications via the UART and communication isolation circuits are in the form of bursts or packets of data The SCI is used to support the RS 485 module bus interface operating at 500 kbaud The SCI is operated in the 9 bit mode In the module bus protocol ninth bits are set only when a module address is transmitted Most of the time the SCI is operated in the Address Mark Wake Up mode In this mode it ignores all characters without the ninth bit set Each time an address is sent on the module bus the receiver will generate an interrupt on this character Software must rapidly evaluate this character to determine if it matches the modul
167. sing ITEM NO DESCRIPTION PART NO 1 Speaker w cable assembly 0012 00 0257 06 2 Screw Pan Hd 4 40 x 3 16 0212 12 0403 3 Screw Pan Hd 4 40 x 5 16 0212 12 0405 4 Screw Pan Hd 6 32 x 5 16 0212 12 0605 5 Navigator Encoder w nut amp washer 0311 00 0132 6 Keypad Membrane 0331 00 0117 01 6 Keypad Membrane 0331 00 0129 6a Keypad Overlay w IBP 0330 00 0029 XX 6b Keypad Overlay w o IBP 0330 00 0029 XX See Keypad Overlay Table P N 0330 00 0029 XX on page 5 7 7 Foot 4 required 0348 00 0190 8 Knob Rotary 0366 00 0101 9 Front Housing 0380 00 0338 01 9 Front Housing LT 0380 00 0338 02 10 Speaker Holder 0380 00 0352 11 Serial Number Label Front Housing 0334 00 1560 12 PCB Interconnect Panel Bd LCD Display 0670 00 0686 13 Cable EL display to Interconnect Bd 0012 00 1005 14 EL Display Assembly 0160 00 0044 15 Screw Flat Head 0212 17 0807 16 EL Gasket 0348 00 0189 17 Mount Rail EL Right Side 0436 00 0138 18 Cable LCD Color display to Interconnect Bd 0012 00 1208 19 Cable LCD Color DC AC Inverter 0012 00 1221 20 LCD Color Display Kit 0040 00 0331 20 LCD Color Display with Anti Glare 0160 00 007 1 01 20 LCD Color Display NEC Bonded Anti Glare 0160 00 0087 01 For use in units with serial number TSXXXX E8 and below 20 LCD Color Display NEC Bonded Anti Glare 0160 00 0112 01 For use in units with serial number TSXXXX E8 and above 21 Screw Pan Hd 2 56 x 3 16 0212 12 0203
168. sopropyl alcohol Hydrogen peroxide can be used to remove dried blood on all accessible surfaces 5 DO NOT immerse sensors Let sensors dry completely before using CAUTION When cleaning sensors do not use excessive amounts of liquid Wipe the sensor with a soft cloth dampened with the cleaning solution Cleaning CO Sensors Adapters And Sampling Components Oridion patient monitoring accessories are designed for single patient use and should not be cleaned or reused 0070 10 0441 Passport 2 2 LT Service Manual Preventive Maintenance 7 10 7 11 7 11 1 7 11 2 Sterilization and Cleaning of Reusable Cuffs Sterilization and Cleaning of Reusable Cuffs Remove the latex bladder from the cuff The cuff and latex bladder may be cleaned with isopropyl alcohol a disinfectant wipe or by sponging with a damp cloth Both may be sterilized with commercially available disinfectant soaks CAUTION Using dark colored soaks may stain the cuffs Test a single cuff to ensure that no damage will occur ETO sterilization may also be used Hand washing will enhance the service life of the cuff Remove the latex bladder and hand wash the cuff in warm soapy water then rinse thoroughly Allow the cuff to air dry then insert the latex bladder CAUTION When ironing or pressing the cuffs be aware that the velcro fasteners can melt at temperatures above 325 F 162 C Battery Replacement and Maintenance
169. ss the high current peaks from affecting the power supply and power distribution within the system The suppression reduces these peak loads to less than the recorder in rush current with a maximum voltage ripple of 0 5VDC Capacitor C7 is for the purpose of reducing induced PWM switching noise The value of this capacitor depends on the fan current consumption Therefore this capacitor value may be adjusted after lab measurements are analyzed A provisional capacitor C16 is included as a placeholder with a different footprint to further aide in the elimination of the fan s acoustical noise if required XE 50 Interface JA Interfaces the XE 50 Recorder to this Module Data is transferred serially to and from the recorder when it gives the indication that it is ready to accept data The signals SINEN and RDY are ANDed together to produce the REC_CTS which is processed by the CPU for data flow control 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation XE 50 Recorder Interface Board 2 9 5 5V Regulator U4 The 5V Regulator circuit comprised of the Micrel MIC2954 three terminal regulator which derives 5 from the incoming 12V 12 2 The regulated 5V is referenced to the 12V return in order to minimize the introduction motor noise generated by the fan G2 and G5 isolate the boundary between the CPU Module s circuit ground potential and the local ground potential Since the two are referen
170. ssigned to measure the internal battery voltages They also have an attenuator circuit which attenuates the battery voltage by 1 4 to stay within the limits of the A D converter 5 SRAM There is 128K x 8 bytes SRAM which is used to store temporary variables and data required by the Communications Processor Keypad and Rotary Knob The front panel keypad is interfaced to the QSPI port qualitied by PCS1 In order to read a key keypad scanning is used The actual scanning logic is contained on the Interconnect board 0670 00 0686 and 0670 00 0714 in CPLD U1 The keypad rows are exercised with a Awalking zero pattern This means that three out of four lines will always be at a logic 1 with one line driven low In a complete cycle each line will sequentially go low driving a different row on the keypad This cycle is repeated continuously at a fast rate The eight columns are read whenever a key is depressed the coordinates of that key will be determined by knowing which column line The Communications Processor sends the scan pattern on the QSPI port transmit output MOSI and receives the keypressed response on the QSPI receive input MISO The QSPI signal are connected to the Interconnect board through connector J5 The keypad connects to mating connectors on the Interconnect Board The front panel rotary selector is quadrature encoder with an integral switch The purpose of this device is for LCD menu scroll and selection The quadra
171. supply using a combined SEPIC and Cuk topology The switching frequency is 500KHz The choice of 15VS or 12VS is provided by using a choice of 2 different feedback resistors for R18 depending on the module that the board is interfacing to When the 12VS is selected the 12VS is not needed but is still available The SpO module that uses the 12VS does not have any connections to the 12VS The 15VS and 12VS 12 5 as well have an enable capability using a digital signal from the microcontroller on the Passport 2 CPU FE board LC filters are provided on the positive rail with L808 and C42 and on the negative rail with 1807 and C841 The 5VDS is provided using a linear regulator and has an enable capability from the microcontroller The 5VAS is provided using a linear regulator 04 and has an enable capobility from the microcontroller The 5VAS is provided using a linear regulator U5 and has an enable capobility from the microcontroller The 5VDS and 5VAS are prefiltered using an LC filter 1809 and C812 on the source input 5 5V to reduce any noise and ripple Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 55 SpO UART Serial Interface Theory of Operation 2 18 2 18 1 2 56 SpO UART Serial Interface The SpO interface board provides SCI UART host communication to the SpO2 modules It serves simply as an adapter The signals RX SpOSRST PB5 CTS pass through unchanged
172. sure signal acquired by the transducer PT1 is digitized by the ADC U2 and processed to extract the oscillometric blood pressure data At the conclusion of the measurement phase the dump valve and linear valve are both fully opened to rapidly exhaust the residual cuff pressure 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 15 2 2 15 3 Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 Passport 2 NIBP Module P N 0670 00 0730 or 0670 00 0746 01 Pressure Transducer 1 A Fujikura 5 5 transducer was selected for the measurement channel It provides a high level output signal which eliminates the need for an external amplifier circuit All that is required is a pull up resistor and compensation capacitor The is screened to maximize performance in designs which will perform a zero cal before each measurement and a yearly span cal at 150mmHg near room temperature It also provides a nonlinearity specification beyond the screening limits which enhances performance The transducer is not installed during the initial PCB manufacturing and cleaning processes avoiding exposure to moisture which may effect its performance but will be soldered in place during final module assembly The transducer has an output transfer characteristic of 1 1 667mV mmHg Adjusting trim pot R81 changes the attenuation factor of the transducer output signal span calibration and thu
173. te a small offset voltage using R94 and R92 to insure the FET is fully off for a DAC code of 0 R95 is chosen to guarantee the full scale current fully closes the valve under worst case conditions including coil winding tolerance 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation NIBP Module P N 0997 00 0501 The IRF7303 MOSFET part 96 was chosen due to its lead frame design which offers superior power dissipation capabilities As such the maximum junction rise when driving the 0 526W 274 ohm linear valve coil under the worst case conditions does not warrant any heat sinking to achieve reasonable reliability 2 4 8 Primary Microcontroller U10 The NIBP PCB utilizes a Motorola MC68HC16Z1CPV16 microcontroller This specifies a 5V 16 78MHz commercial temperature range part 144 pin TQFP package This processor is responsible for controlling a pump and two valves in the generation of the patient pressure signal This data is processed by the HC16Z1 and fed to the host via an RS 485 interface through the processor s SCI port A 32 768kHz crystal Y1 is used for the HC16Z1 reference oscillator circuit The HC16Z1 SYNCR clock synthesizer control register will be set with X21 W 0 and 60 This produces a nominal system clock frequency of 15 99MHz The 32 768kHz crystal is specified with a load capacitance of 20pF To present this load C20 and C21 are set to 33pF The load capacitance is calculate
174. tension 375 Dia 1 5 Length Spring Compression 296 Dia 1 281 Length Socket Guide Docking Connector Screw Pan Hd 4 40 x 25 Lg Screw Pan Hd 4 40 x 75 Lg Screw Pan Hd 6 32 x 50 Lg Screw Pan Hd 6 32 x 31 lg Screw Shoulder 6 Thread 156 Dia x 0 187 Height Nut Plain Hex 4 Small Pattern Washer Snubbing Mylar Washer Flat Large O D 4 Label Function Diagram Base Station Label Information Base Station Label Dashpot Adjustment Label Latch Locked Unlocked Bumper Feet Base Station Standoff Hex Male Female With Lock Washer Label Part Number Serial Number Power Supply Assembly Dashpot Assembly MB1 Connector Shroud N A Not Available 0070 10 0441 Replacement Parts PART NUMBER 0380 00 0340 0380 00 0341 0380 00 0342 0380 00 0343 0380 00 0344 0380 00 0345 0386 00 0323 0406 00 0737 0670 00 0758 01 0670 00 0759 01 0361 00 0182 0103 00 0466 0406 00 0738 0406 00 0841 0226 00 0016 0008 00 0321 0214 00 0235 0214 00 0234 0132 00 0077 0212 12 0404 0212 12 0412 0212 12 0608 0212 12 0605 0217 00 0012 0223 02 0004 0221 00 1016 0221 00 1010 0334 00 1511 0334 00 1497 0334 00 1618 0334 00 2514 0348 03 0001 0361 00 0164 N A 0014 00 0070 0103 00 0465 0334 00 1668 Passport 2 Passport 2 Service Manual so Calibration Procedure 6 1 Calibration Introduction 6 2 6 2 Warning and Guidelines
175. then passes the signals to the main board 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation 2 7 2 8 2 8 1 2 8 1 1 2 8 1 2 2 8 1 3 Nellcor Interface Board Nellcor Interface Board Overview The Nellcor Interface PCB provides the communication path for the two way data flow between the Nellcor MP 304 PCB and Passport 2 CPU Control Module The MP 304 analyzes the analog input from the SpO sensor and outputs the data in digital format via a serial digital interface The purpose of this PCB is to control the power supplied by the control module as well as to reassign pins for two connectors serving as an adapter between the two boards Recorder Interface Board AR 42 Overview The function of this board is to provide power filtering for the recorder and suppress the current spikes The board also provide fan control and fan tach filtering and conversion to logic levels that the 860T can accept Detailed Description Power Filtering Power filtering of the recorder logic 5VDC is provided by C5 and This circuit provides a low pass filter to reduce noise introduced into the system power Since the load is digital logic the current peaks are minimal The power filtering for the recorder motor and print head is provided by this board It is this board that must suppress the high current peaks from affecting the power supply and power distribution within the system The suppress
176. ts LEDs Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 9 CPU Control Module 2 1 26 2 1 27 2 1 28 2 1 29 Theory of Operation D A Analog Outputs There are two analog outputs for recreation of the waveform and IBP measurement Both analog signals are created using dual 12 bit D A 0724 and Op Amp U701 The required 4 096V reference is supplied by U638 The ECG OUT channel is composed of half of U701 The first stage is a low pass filter with a gain of 2 and a level shift to allow maximum output swing of x 4 096V The second stage provides a gain of 1 25 The OUT channel is composed of half of U701 The first stage is a low pass filter with a gain of 2 and a level shift to allow a maximum output swing of x 4 096V The second stage provides a gain of 1 25 allowing the maximum amplitude to be 5V The dual 12 bit D A converter gets its data from the Communications Processor s SPI port qualified by PCSO Clock and data to 0724 are buffered by The data is recreated from measurement data received by the Communications Processor over the module bus Analog Inputs The communications Processor has a 6 channel A D converter only 4 channel are used at this time The A D converter is only for monitoring voltages and not for critical measurements and AN1 are assigned to external analog inputs There is an attenuator circuit provided to keep the input to the A D within its limits AN3 and ANNA are a
177. ture but is easily distinguished from the readings obtained when a 400 series probe or no probe is present 2 2 14 Timers The only digital input to the processor is Timer Input Compare 1 Port GP 0 which is used for pacer detection This line exhibits a falling edge each time a pacer is detected Therefore this input should be configured to generate an interrupt on falling edges which invokes the pacer handling ISR A timer channel rather than interrupt input has been used so that the exact time of arrival of the pacer is logged this may prove helpful in generating some of the timing based on the pacer although it is not necessary to use this feature The latency of the pacer ISR must be minimized a consideration which must be remembered when assigning timer interrupt priorities Timer Output Compare 1 port GP 3 is the pacer blanking output When the monitor is used with patients having conventional implanted pacemakers this signal is not used and is maintained at logic low In the case of external pacemakers much stronger pacer overload signal results and the pacer blanking output is used to activate a sample and hold of the ECG signal for the duration of the pacer overload In external pacer mode TOC 1 is used to generate the pacer blanking pulse The Pacer ISR sets the TOC 1 output high initiating the pulse It further programs the TOC 1 register to terminate the pulse after the requisite duration Therefore the TOC 1 function is
178. ture signals CHA and CHB are input from connector J5 70 and J5 71 The Communications Processor interprets the serial data stream and sends it to the MPC860T through the Dual Port Ram representing direction and speed as well as the status of the integral switch 0070 10 0441 Passport 2 Passport 2 Service Manual Theory of Operation CPU Control Module 2 1 30 Control Functions There is a DC DC converter module PS1 which provides isolated DC power to the front end circuitry The module can be turned on by a logic 1 on the Communications Processor port pin PGP7 The Communications Processor reset input is controlled by a signal from the MPC860T port 6 The signal required for reset is a logic 1 The signal is inverted by FET 1 before being connected to the Communications Processor RESET pin 2 1 31 Module Bus Communications with all measurement modules in the ECM is through a RS 485 module bus The Communications processor is the host and all modules are slave devices The Communications Processor UART connects to the module bus through RS 485 buffer driver U20 The direction of the data flow through the RS 485 buffer driver is controlled by two different signals from port pins on the Communications Processor Receive is controlled by an logic O on port pin PGP6 and logic O on PGPO Transmit is controlled by a logic 1 on PGPO and a logic 1 on PGP6 There is a module bus connection from the isolated front end through RS 485 b
179. uffer driver U28 The isolation is provided by opto couplers The front end transmit data is provided by opto coupler U230 and receive data by opto coupler U231 along with Q2 and part of U100 The direction of data flow is controlled by opto coupler U232 along with part of U100 Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 11 Front End Module 2 2 2 2 1 2 2 2 2 2 5 Theory of Operation Front End Module Overview This document describes the theory of operation of the ECM Frontend module This module is responsible for acquisition of most of the patientsafety isolated signals namely the ECG Respiration by impedance Temperature and two channels of Invasive Blood Pressure The Front End Module consists of a common isolated power supply data isolation microcontroller and A D converter shared between the various patient signals Power Supply The power supply takes a raw 12v DC supply voltage and generates the highly isolated operating voltages required by the front end module Since the input voltage varies over a 5 range some form of regulation is required To preserve efficiency a modular switching supply is used This power supply requires sufficient isolation between the input and output to withstand the open circuit voltage of a defibrillator up to 5 kV Further it requires low capacitance between the input and output to minimize leakage currents which may flow should the patient accidently
180. uiltin capacitors is used for the AVR s oscillator AT90S4433 is informed of the desired measurement mode by reading the MODE_IN3 0 signals fed from the HC16Z1 It in turn sends back four signals STATE_OUT3 0 to indicate that the AT9054433 has not encountered any faults has set its over pressure and measurement duration limits to match the type of measurement indicated has completed the offset reading zero and is ready for the measurement of the type encoded on STATE 07 3 0 The over pressure signal is sampled by ADC internal to the AT90S4433 at a rate of 153 125kHz If it detects an over pressure condition the AT90S4433 goes into an emergency shutdown state In this state the 9054433 turns off 12VSW power feeding the pump and valves by toggling the 1 2VEN signal line high Since the valves are normally open turning off their power will vent any cuff pressure to atmosphere The AT90S4433 then remains in the emergency shutdown state until the system s power is cycled Note a software reset issued from the HC16Z1 and asserting RST will have no effect on releasing the AT90S4433 from the shutdown state The ADC uses an external reference voltage T5V Since T5V is the same voltage source that is powering the ratiometric transducer direct ADC readings represent the pressure In addition to the input signals MODE IN3 0 and the 9054433 also has the 2 5V reference voltage 25VR applied to its A D
181. when driving the 0 526W 274 ohm linear valve coil under the worst case conditions does not warrant any heat sinking to achieve reasonable reliability 2 15 8 Over Pressure Detection There are two methods of keeping the pressure from getting too high The first method is the HC16Z1 software based monitoring of the pressure transducer PT1 When the software monitors pressure higher than 300mmHg in Adult mode 200mmHg in Pediatric or 150mmHg in Neonate mode the measurement cycle will halt and dump valve V1 and bleed valve V2 shall open to release the pressure in the cuff In the event of an over pressure condition that is not corrected by the HC16Z1 software and the measurement channel circuitry the over pressure channel serves as a fully redundant backup system to disable the pump and valves thus relieving the pressure in the cuff The hardware over pressure limit detect circuitry will deactivate the over pressure signal 12VEN cutting off power to the pump M1 and valves V1 and V2 reverting them to their normally open state independent of software This action places the NIBP PCB in a shutdown state that can be exited only by cycling the system power To achieve this secondary over pressure detection the PCB uses a pressure transducer 2 separate from the measurement channel a secondary microprocessor 04 and power cut circuitry Q1 02 This circuit is also powered by a separate voltage T5V than used by the AD7714 and
182. with an external programmer This device is used to store network settings Communications from the device is done via the MPC860T s SPI interface To select this SPI device the MPC860T s SPISEL signal PB31 should be set to logic O Passport 2 Passport 2 LT Service Manual 0070 10 0441 2 7 CPU Control Module 2 1 16 2 1 17 2 1 18 2 1 19 2 1 20 Theory of Operation CO Interface Connector 4 This connector connects the Communications Processor Module Bus to the External Parameter Module In addition power 5Vdc and 12 2 and ground are provided The digital signals are protected from ESD by capacitors C489 to C494 Recorder Interface The recorder interface J8 is a serial interface which is 8 bit 1 stop bit no parity and a baud rate of 38 4K The recorder interface is implemented using the MPC860T SCCA The recorder is controlled by sending a series of software commands along with data over the serial interface The recorders electronics process the incoming commands and data and send print information to the print head Hardware handshaking is provided using the RTS CTS control lines Handshaking signals are used to control the transmission of data to the recorder and to ensure that the MPC860T does not send another command until the current one has been processed The RECRST signal is used to reset the recorder This signal is an active low output from PB 16 of the MPC860T and is a software control fu
183. ycling system power In normal fan operation a pulse train is present at the SENSE pin A missing pulse detector monitors this pin during fan operation A stalled open or unconnected fan causes the TC646 to trigger its startup timer once If the fault persists the FAULT output goes low and the device is latched in its shutdown mode The Cooling Fault signal is also generated if there is an over temperature condition That is a temperature rise above the point where the fan s PWM control signal is at 100 A Cooling Fan Failure message will be displayed on the unit but no action is necessary if the temperature normalizes Fan Fault Sense The SENSE input U2 pin 5 is connected to a resistor divider network R5 amp R30 to scale down the tach pulses from the fan During normal fan operation a brief interruption in the fan current generates pulses into the sense resistors network If the device is not in Shutdown mode and pulses are not appearing at the SENSE input a fault exists The Sense Network shall scale down the pulses that will meet the requirements of the TC646 of 90mV minimum at pin 5 Power Filtering Power filtering of the recorder logic 5VDC is provided by L1 together with C5 and C This circuit provides a low pass filter to reduce noise introduced into the system power Since the load is digital logic the current peaks are minimal This board provides the power filtering for the recorder motor and print head It must suppre

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