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Service Manual - Frank`s Hospital Workshop

1. 47 mee OR 48 51 51 se Mee TR 51 51 52 oO 52 ee oon Sa 52 NICO ACCeSSOTIBS 53 Pans ES 55 9226 00 Non Invasive Cardiac Output Monitor Model 7300 _ 55 9220 01 rt estate Kota Come Door 55 2709 01 Board ASSY em rc 56 2164 01 Fower BONG ASSY gt sa arses cs 58 2 095 01 Analog ASSY Du 62 2 1 CO gt MPU BOAT ASSY 65 9392 01 RSV ASSY 65 E 67 Model 7300 Service Manual Rev 00 Rev 00 1 Safety For maximum patient and operator safety observe the following warnings cautions and notes 11 Warnings WARNING I
2. VBATT R91 C73 511K 0 047u C129 IRAW LT1460KCS3 2 5 100p th R95 121K 020 C75 ZS VDD L5 D21 LT1117 5 amp 07000 16 0 01 u RZ 7 4 gt 61 TP33 1229 896 31 5005 IVDD 7 RI83 LMC7101 249K MBRS140T 10K R97 R182 SYSUP 2 016 121K IC2BA 00 A T2222A TLE2022 lt PWROW gt e I 1 R88 VDCIN 10 n D22 17 36 gt MBAS1100T R100 it 205 025 R104 100K 31 5005 C83 2 100p M C79 C80 H 31 5005 220 10 VSRC C85 iid 35 0 010 027 Xfmr Flyback EGL41B VDD VV TP43 TP44 DGND AGND e 8110 TP45 8112 PSREF 33 2K 2 029 8116 8117 EGL41B p28 37 4 249K 0914 C137 8115 2 112 10 33 2 0 Tant gt VSRC 25V 120 C94 A119 C131 3 32 A 017 y R118 511 100 SSYNC 2 2 712369 1 21 PSREF VDD E 113 ee cos IC35B D31 10u 0 1u 2N7002 LP339 R122 Ai gt 100 Sum MBRS1100T C96 C97 TP52 2200 2 10 XTOCIN lt lt PSREF ate dii ds ce nis x R BE 35V 35V 61R30T c R129 034 MBRS140T 2A SB 7 DVDD 54
3. 184 8146 1M 49 9K 40 LM393 R158 150K H164 324K NOTES 1 UNLESS OTHERWISE SPECIFIED RESISTANCE VALUES ARE IN OHMS 1 16W 15 2 UNLESS OTHERWISE SPECIFIED CAPACITANCE VALUES ARE IN FARADS 3 UNLESS OTHERWISE SPECIFIED INDUCTANCE VALUES ARE IN HENRYS 4 LAST USED REF DES C137 D43 E2 F6 1C47 JP1 J9 L23 0Q27 RP9 R191 TP66 T1 Y1 5 COMPONENTS NOT FITTED C69 C110 JP1 R185 6 REF DES NOT USED C112 D41 L19 026 RP1 RP2 RP5 Novametrix Medical Systems Inc 5 Technology Drive RHD MRL Wallingford USA 212498 MJC Mu Document Number Code Re Ll 2764 01 Rev Sy Date Dale Wednesday June 02 1999 ol 6 lt 018 15 6 100K VDD SSCLK Y SSDO PCSO PCSI PCS2 PCS3 WRL RDL PWRDWN RESET SYSIN2L UARTCSL EE 22 CO2AZ SPO2CLK CO2PWENB 29 FLowcuk 3199008 eh 5 28 PSSYNC 2 A30 SSCLK SACORVI 01 A32 5500 JIPU SYSUP 0255 22 B2 lt 5501 PESO SRSTL PEON AS 25 PCS cala ee PCS3 d EE 14 REPE RSAMPL 909 B12 DBDACL SACDRV1 IRLEDL 22 14 OBEECS CO2SSH ISAMPL a B16 WRL CASEPWM UARTCSL lt ADL DETPWM UARTIRQL EXTDCIN SYSOUT2 SYSIN2L C B
4. SRCDRV1 0255 ASAMPL lt RDLEDL RSAMPL IRLEDL 1 CUARTCSL UARTIRQL 11 PAUSE RESET gt A SYSIN2L Lin SILENCE BJ SYSOUT2 EXTONLED lt SYSOUT3 DATALED i CSOFTOT DSOFTOT SPO2LPONS S RSTL SAMPLE 8 CNTRLO1 5 21 cas E 4 10u MAN C22 RA O 24 iii Tant C26 C27 as gt VHTR 24 35V 0 0470 10 cog of Keypanel 29 00 10u Ee Tant Tant C30 EM 35V es C31 SPO2LPON SAMPLE Tant an CNTRLOT SPO2VLED 2 35V 35V a InterBd 221111 4 C32 RESET 3A SB J7 lt B E 5 2 74 573 F2 VHTR 125mA FB J8 O C33 3 0 010 gt 4 NOTES 1 UNLESS OTHERWISE SPECIFIED RESISTANCE VALUES IN OHMS 1 16 W LS 6 2 UNLESS OTHERWISE SPECIFIED CAPACITANCE VALUES FARADS 7 7 839 100K 3 UNLESS OTHERWISE SPECIFIED INDUCTANCE VALUES HENRYS d 74HC573 4 LAST USED REFERENCES C64 D3 E4 F2 1C23 J9 113 Q3 R110 RP10 S1 TP6 Y2 840 008 eeRsTL 10 02 5 C44 J1 04 J6 J9 Y2 R3 R31 R32 R57 R59 RI2 R93 R106 R107 Y2 5 6 REFDES NOT USED 105 R5 R6 R68 R102 13 95 ROL 14 Q6 WRL 5 07 57 8 16
5. IBM compatible computer A 1 connect the serial communications AS cable to COM1 or COM2 c i WALLINGFORD iu y SE 2 Serial communications cable 3 NICO on 7 9 3 Procedure 1 Insert the update diskette into the computer s floppy drive typically drive 2 From DOS Type A where is the drive letter where the update diskette is loaded At the prompt type UPDATE then press 4 From Windows 3 x Boot to DOS and follow the DOS instruction above From Windows 95 Select Start Run then type where A is the drive letter where the update diskette is loaded 3 Follow the install program screen instructions Verify that the firmware version shown on the computer screen is correct then press any key to continue 4 When the following prompt appears Select the PC s COM port the instrument is connected to from the following choices 1 1 2 2 any other key exit Press 1 for COM1 or 2 for COM 2 If the download does not start try selecting the other COM port you are not sure of the process press any other key and call service or Novametrix service Department at 1 800 243 3444 in Connecticut call collect 203 265 7701 3 The location and availability of the COM ports COM1 COM2 will vary from computer to com
6. USED ON 09226 01 IscuE 31 7 6 9 4 3 2 1 gt DESCRIPTION FAB DIGITAL BOARD SCHEMATIC DIGITAL BOARD TEST PROCEDURE DIGITAL BOARD PROGRAM CPLD ASSY DISPLAY INTERFACE PROGRAM FLASH PEROM ASSY BOOT CODE SYS CAPACITOR 4 7uF 10 10 TANTALUM CAPACITOR iuF 50V 10 CAPACITOR 10uF 25V 10 CAPACITOR OtuF 50VDC 10 CAPACITOR 10uF 35 10 CAPACITOR 6 8pF 50V 5X 2763 02 B2763 03 2763 04 9428 07 9569 07 154069 154072 154079 2 6 CB C10 C14 C17 C21 C24 32 39 C41 C43 45 47 C49 C51 C52 C54 C59 C61 154104 154105 154106 154108 154112 154116 154119 3 Ses a CONNECTOR 96 PIN HEADER 3 ROW 1 SP MOLECULE NE TEST POINT SPRING LOADED 475 C MAX 180022 i 180029 180030 L4 110 180035 180062 t 210156 211213 r 211327 212543 216029 CRYSTAL 32 768kHz RESISTOR 10 OHM 1 16W 1 R41 R94 R4 R12 R29 R36 R3B R47 62 67 69 891 R95 R399 R103 R105 R109 R110 R11 R34 6 R108 R7 RB 474194 474222 474224 RESISTOR 100 OHM 1 16W 1 RESISTOR 499 OHM 1 16W 1 RESISTOR 1k OHM 1 16W 1 RESISTOR 4 99k OHM 1 16W 1X RESISTOR 10k OHM 1 16W 1 pore o EES ee ee gt 474225 474227 474231 R1 R9
7. a ees ode acute cele 6 Revision eT 6 pee eT 7 NICO Model 7300 Non Invasive Cardiac Output 7 Digtal BOIA oo 7 SOM 7 Background Mode Debugging and Application Development 11 SySIem MEMO as sete ght Sassi ciui utente onse 11 User Interiace Control c 12 Real Time Clock Power on RESET Generation and Glue Logic 12 Power Supply 2764 Power Supply and COMMUNICATIONS 13 Serial Communications 13 COs Pulser Source DIVE a cores ssn eect UMP NE 15 CAPNOSTAT Case and Detector Heater Control 16 Saturation LED Power Generation and LED Drive 17 Power Supply and Voltage Reference Generation 17 Logic and Input Output Signal 20 Analog Board 2769 0I MT eek 20 2 eias 20 eer E 20 Case and Detector
8. 29 0 01 Y 5 1 17 AD8403AR50 FVCC C125 0 047 R129 75K C128 122p C129 22 T TP45 NICOPRESS ERG NICOPRESS C133 IC31 D21 0 01u AD620 D7000 134 0 01u FVCC 46 NA 23 7 R89 AD620 31 75K 3 _ D17 36 C89 PII 0 1u 274 Vt R98 1 5501 SSCLK _ 14 SCLK UL AND Aa NN FLOWCAL FLOWCLK AIN24 C102 1000p F 16170 C109 C112 22 115 22 27 0620 D 123 124 0 0fu 0 01u F F 6 FREF1V25 127 R134 75K AD8403AR50 25 C117 0 01u R81 100K TP28 FVDD 4 C76 S 016 0354 TP30 FLOW FVCC C78 9 22 TLC2272 SSELOWA 0 01u 21 71491 TP32 R92 R93 E FVCC TP34 FLOW10 FREF2V5 Hom IC21B 71491 C93 0 01u F R105 FVDD E R104 D18 D354 TP38 FLOW100 gt gt FLOW100 C103 0 01u F 40 FLOW1000 om 2 71491 gt gt FLOW1000 C114 0 014 FVDD TP43 AWPRESS pio 2 07000 gt 100 71491 22 TLC2272 L iC22GND 120 Ri23 75K gt gt AWPRESS
9. 0 01 21 wieso HD Document Number Rp pu p DRUMS o Pros Fie 2168 Sheet Rev R No By Dale Dale Wednesday June 02 1999 of 5 7 5 C33 2 R22 C182 0 10 9 24 9 0 01 NPO CVDD CVDD CVDD R24 100K 35 I I 4 1 R26 R27 CO2DET 4 10K 10K em D10 R30 07000 5 24 9 2 CO2DET 5 2 IC9A C36 TLC2272 C37 20 5K 2272 0 0047 i 0 047u R32 i NPO 3 32K R33 R34 33 2K gt gt DHARDOTL Ve gt gt CHARDOTL AREFS 0 C41 R38 2 P339 0 01u R40 2 33 2K 7 TP10 CO2CASE lt gt _ 2 R44 R45 24 9 24 9 D gt CO2CASE CASETHRM gt gt ICBB IC9B CVDD C42 TLO2272 C43 20 5K TLC2272 0 0047u 0 047 R47 h NPO 3 32K V z C Ve AREFS HAB gt gt CO2XDISC 249 49 2 p339 37 4 C44 11 100 lt 12 C45 M Otu CO2DACL i CO2DATA 5209 Er SSCLK 14 SRSTL LTC1590CS R52 499 gt gt CO2DATA C51 VREFA 2 012 R53 DUTA TLE2022 25 BAT54 1000p IOUT2A 0 01 VREFB 0 19 CO2REF mem IOUT2B R66 1K pe IC15A R6 1K 499 22 CO2REF O2DATAIN w IC15B C62 TL
10. ie C147 C162 C45 sega PRESS SEAL INTO AS SHOWN 65 256 R242 276502XX 59 41 642 AND IC43 ARE LOCATED BENEATH FLOW CONNECTOR SEE SHEET 2 FOR BOTTOM SIDE ASSEMBLY SEE SHEET 3 FOR PNEUMATIC ASSEMBLY SCHEMATIC NOTES 1 FOR TEST PROCEDURE SEE 2765 04 2 THE FOLLOWING COMPONENTS ARE NOT FITTED C90 017 IC24 1C47 7 113 R14 R96 R200 R236 R240 R241 R242 This document contains information which is proprietary ond the properly of Novornetrix Medical Systems lac and may reproduced used or disclosed in whole or in port without the written consent of Novumetrix Medical Systems Inc 00 SCALE DRAWN DATE NOVAMETRIX CHECK A SECURE TRANSDUCER SUPPORTS LL FOR 1229 amp 132 WITH 4 24 x ER UNE o ouem mu 5 16 L PAN HEAD SCREW MODEL 7300 NICE ENGR DATE nn aaa x cut D 2765 8 7 5 4 3 5 1 IN 7 16 IN H SEE NOTE 1 SEE NOTE 1 9024 10 608129 5 8 160030 7 IN 608129 5 8 1 7 16 IN 608129 5 8 IN 2 3 1 2 IN 3 3 4 EE 250169 m SEE NOTE 1 0134 5 8 IN 608129 5 8 IN 160050 3 POB BAN
11. 481557 fr 153063 CAPACITOR 220pF 20 C71 C72 474193 RESISTOR 8 87k OHM 1 16W 1 483019 154072 CAPACITOR tuF 50V 10 474195 RESISTOR 511 OHM 1 16W 1 R31 R9B R119 R145 R150 c35 R151 RIBI 48406 481549 481555 gt gt 022 031 TRANSISTOR PNP SOT 23 TRANSISTOR NPN SOT 23 TRANSISTOR NPN SOT 23 011 015 022 024 417 i C1 C5 C10 C14 C16 474224 R123 R162 R179 R196 R187 5 IC MICROPOWER REGULATOR 8 PIN 486813 IC QUAD FET INPUT OP AMP 14 C17 C19 C23 C24 C26 C27 1 C13 C19 23 C24 C26 C27 R19 484553 IC VOLTAGE REGULATOR POSIVE ADJ 3 PIN ic53 486821 IC FET INPUT OP AMP LOW POWER C42 C43 C45 C47 C51 C52 484565 IC VOLTAGE REGULATOR 5A SWITCHING 5 LEAD 36 486825 IC OP AMP LOW POWER RAIL TO RAIL C56 C60 62 54 C67 CB 474225 RESISTOR 499 OHM 1 16W 14 mac ep he C75 CB2 CB5 7 CBB C92 R90 R105 R178 484575 SWITCHING REGULATOR 1 2 37V 5 PIN 1 37 486828 IC MICROPOWER SERIES REFERENCE 3 PIN C105 08 6113 Chis E116 2119 RI R2 R24 R25 R28 R58 Res 484575 VOLTAGE REGULATOR ADJUSTABLE 5 PIN IC19 486831 IC PRECISION 2 5V REF 2DmA MIN OUT 8 PIN C128 R7D R76 R79 RBD RBS R125 87100 R140 R157 R159 8165 8177 INVERTING DUAL MOSFET DRIVER 1 2 PIN 154105 CAPACITOR 47pF SOVDC
12. 7 o o 36 Model 7300 Service Manual Rev 00 Testing Electronic Tests 6 6 4 Testing 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Set the 1265 switches as follows INSPIRED CO2 OFF CO2 0 SENSOR LOCATION A A SOURCE CURRENT NORMAL CO2 MODE CONTINUOUS TEMPERATURE NORMAL Connect the TB1265 to the monitor using the 1265 adapter cable Press the MENU key then select SETUP select ZERO NOW Follow the screen prompts to perform a zero calibration When the zero calibration is complete select EXIT NOTE The CAPNOSTAT sensor must reach operating temperature before zeroing Set the TB1265 simulator controls as follows CO2 MODE RESPIRATION CO2 5 Turn the knob to display the screen and verify ETCO value of 41 2 and a RR respiration rate of 20 2 Press and hold the MENU and DATA ENTRY keys simultaneously until the CONFIGURATION MENU appears Select DIAGNOSTIC SCREENS then select CO2 Verify DET T and CASE T stabilize at 45 00 0 2 Use TP65 as reference and monitor L5 on the 2765 board Set 1265 TEMPERATURE to CASE OVERTEMP Verify the voltage is at zero volts and CASE T is gt 50 00 and DET T remains at 45 00 0 2 set the TEMPERATURE back to NORMAL Verify CASE T stabilizes at 45 00 0 2 within 2 minutes Monitor L4 on the 2765 board Set the TB1265 TEM
13. EQ 7 B s 25 R25 R28 18088 This document contains information which is proprietary and the property of Movometri Medica Systems and may be reproduced used or disclosed in whole or in part without the written consent of Novametrix Medical Systems inc SCALE DRAWN DATE NOVAMETRIX PENSIONS ARE IN INCHES mm MEDICAL SYSTEMS INC TOLERANCES us DATE WX 0r 12 MFG ENGR POWER BOARD ASSY XXX 005 127 XXX 4 0025 d BG 2 17 99 MODEL 7300 NICO DATE FRAC 81 64 tiyr DG SIZE DRAWING No cook REV DRR 2 17 99 D 2764 01101 1 D ie es 5 SR INDUCTOR 220uH 20 L3 14 180047 INDUCTOR 50 OHMS 100MHz ae LB 18 111 L14 117 122 LIB JB FERRITE FILTER 8 LINE SUPPRESSION 6 DESCRIPTION REF DES 5 9 481056 216029 TEST POINT SPRING LOADED 475 C TP10 TP19 TP22 34 43 1P44 481046 1 REF DES A270420 DESCRIPTION REF DES DESCRIPTION REF DES 8 DIODE ZENER 39V SW 5 DIODE ZENER 7 5V 500mw DIODE SWITCHING DIODE HOT CARRIER SCHOTTKY DIODE RECTIFIER SILICON DIODE RECTIFIER DIODE SCHOTTKY 40V 3A DIODE DUAL SWITCHING DIODE DUAL SCHOTTKY COMMON CATHODE DIODE SCHOTTKY tA 100V 485315 486314 IC QUAD ANALOG SWITCH BUFFER LINE
14. LFAA0509415H VALVE1 My 519945 OCDRVO C165 R182 0 01u 100K y R185 VALVE2 v OCDRV1 C166 R186 0 01u ARAS YT 2H 050951 V y C167 029 220 07000 Elect 2 Way 35V OCDRV2 V4 V 8193 7 05 LFAA0509512H 1M ALVES y 519945 168 R196 0 01u 100K 2 R198 v 1M ose OCDRV3 ALVE4 gt gt 519945 R245 C169 4 10 R199 0 01u VVDD X NICOV1 100K B R244 Q10 100K T2222A C24 0 047 R205 TP67 Q7B 4 514539 5 ovi gt 0509512 170 4 2200 031 Elect 07000 35V 2 Way V6 LFAA0509512H V 519945 LM393 07000 172 C34 2 Way R206 D37 10u 100K 54 0 047u 25V R208 7 y lt y 0 cJ v Q6B 1M i 174 R209 0 01 Sampling Pump 100K DISPVA DNP C 2 DISPVA IC45 M R210 T LP2951AC D7000 E C176 0 047u R214 24 9 179 7 0 01u C180 s 220 08 Elect R219 7 T2222A 35V 1 R221 E R220 1 4W 100K 10K ie mm Tav M J5 Flow Conn D Dummy z R178 9 s R177 511 100K VDD 2 184 8183 511 100 281 VDD 1189 100K ERT3281 VDD 195 1043 R194 511 100K ERT3281 PURGE 2 R202 100K D35 54 64 150 VVDD 178 177 gt 0 14
15. TM ENSE Ngovametrix 5 7300 NICO u Llvcc PROFILE RTC62423 ee lt Technology Drive Wallingford USA pis NN MERE NINE MM ooa cin 0 01 m SSS DENEN Mig MJC Approved Size Document Number Code o1 9 B 2763 03 0 2763 Sheet 2 Rev __ Date Wednesday June 02 1999 of 3 SYSCLKO 2 MC74HC4017 1012 74HC4040 010 151 gt ERN 9 2 d SNR 4 5 s D 8 9 10 JTAG ISP CLKO IO V CLK1 IH NE AJ 100 101 4 102 0 40 DISPCSL lt _ ______ 2 o T Hor VRAMCSL a DISPDTKL 1 y ve i R41 2 lt lt 10 4 4 SYSINIL C40 10u SYSIN2L Tant 25V 842 24 9K 20 TLC5620C C SSDO DBDACL bon TOUT 1 TOUT2 TP3 21 TLE2022 R61 lt lt 52 es 74 14 NZ VA IC7F SYSUP gt 24 9K 33 2K C48 0 u gt gt SPO2VLED DISPRST DISPLDSL DISPUDSL _DISPCLK 220541 5 5 SYSOUT2 SYSOUT3 PROFILE L13 BLM21B102SPT NE 7 C64 C63 C42 R45 6 8pf 6 8pf 6 8pf 6 8p 33 2K TP2 R43
16. No cook REY 660 2740 799 2765 01 01 _ assy 26 SCALE SHEET 4 OF 2 1 1228 DETTHRM R230 R8 49 9 1 8231 100K AVCC C18 3 C19 104 L H ONCE ptus Tani ANN E ED R1 10K AREF5 AVCCIN P VVDD q 5 A 49 9 1 49 6 fF DISPVA C5 C3 7812 4 7 2 10u Vo yi R20 AVCCIN 1050 190 VIE 1 5 781 12 AVCC LT1460 2 5 10V 0 01u Tant Ot up cup se 047 V E 1 4 i PURGE E 1 0 23 E lt lt 14 NICOV1 ios gt gt CASETHRM 15 2 EN 16 CNTRLO 2 0 01 35V AREF2V5 L 19 M C15 R236 VDD p2 20 SAMPLE T c Cis ion ONP EGL41B 79112 ce 10 10u Tant RP2 35V R242 gt T 242222 35V 35V DNP CO2DATAIN 2 4 S SPO2PROB gt gt CO2REFIN lt SPO2FEDC SSCLK me s Geeta hie QE TTA ee 0 0470 M SYSUP cv 5 SPO2CAL 2 5 25 1 INSIGL _ gt SIGNDL VDD bon a CO2XDISC CHARDOTL 04 i DHARDOTL D7000 T CO2AZ L2 S gt CO2SSH 585 459 _ F0418 1SR ONEEC a
17. 00 Model 7300 Service Manual 67 11 wings This page intentionally blank 68 Model 7300 Service Manual Rev 00 PART OF ITEM 14 PART OF ITEM 14 SET OF 6 LABELS LOCATE IN APPROPRIATE RECESS CHANGE F101 amp F102 AS REQUIRED D 27 a f PART OF lt 14 X9 2 t6 55 2 E lt 2 5 14 gt 0 5 78 A Q DO NOT COVER LOCATE IN RECESS B PRESS FACADE IN 16 FAN OPENING PLACE UNTIL SEATED B NOTES 1 09226 00 MONITOR SHOWN FOR REFERENCE ONLY 2 FOR QA INSPECTION PROCEDURE SEE 9226 70 5 FOR OVERALL WIRING DIAGRAM SEE D9226 09 4 WIPE UNIT amp LINE CORD CLEAN WITH PA ITEM 26 BEFORE APPLYING LABELS 9 LOCATE LABELS APPROX AS SHOWN NOTING ORIENTATION This document contains information which is proprietary and the property of Novametrix Medical Systems Inc and may not be reproduced used or disclosed in whole or in part without the written consent of Novametrix Medical Inc A Systems DRAWN DATE NOVAMETRIX CHECK DATE MEDICAL SYSTEMS INC MFG ENGR DATE NON INVASIVE CARDIAC BN 2526509 OUTPUT MONITOR 7300 ENGR DATE SIZE DRAWING NO CODE S D R Rich 2 25 99 9226 00 1 5 ONLY 1 GROUNDING RE FOLD LABEL IN HALF AND SECURE TO LINE CORD amp IT
18. 2 ent contains information which is proprielary and the property of Novarnetrix Medical Systems inc and may not reproduced used or disclosed in whole or in part without the written consent of Novametrix Medical Systems Inc NOTES mess Get Lancaster aces NOVAMETRIX BERE V DIMENSIONS ARE IN INCHES CHECK DATE MEDICAL SYSTEMS INC TOLERANCES 542 DENOTES THRU HOLE COMPONENTS A M 005 127 2 9 99 DIGITAL BOARD ASSY XXXX 0025 MODEL 7300 NICO un ee ees DRAWC pulo wt D 2765 0101 mv vam NEXT D9228 01 seers os 5 4 3 2 2224 ant c2 c4 65 25V 0 01u 0 01 O O1u O Otu T2CLK ye E S ee aed p Dy 0n 112 21 s aD DE 2 HAPE TP10 AB m n cm TOUT2 a a IP14 A10 TPU15 3 15 11 20818 158 12 LED 1 4 MODCLK PFO 13 SYSUP IRQ1 PF1 A14 EM CSOFTOT IROZ PF2 A15 e E C9 EXTDCIN IRQ5 PF5 A18 1000 P
19. 20 era D COMETA eas a 486566 POTENTIONETER 10k omm ze PM 488481 S BT 0 10 converter sem HOLD 406825 1c aw 25 REF OU e __ PRECISION REF LOW NOSE eI oP tw PW war IC ABSOLUTE PRESSURE SENSOR 15 PSI 4 PIN IC PRESSURE TRANSDUCER 0 5 PSIG 4 PIN IC PRESSURE SENSOR 1 IN H20 10 PIN TUBING POLYURETHANE 3 16 00 X 3 32 ID MODEM 2 2224 ee MEE SENE BEEN al ANUS RM ae ae aa NN 2528 ME oe ae This document contains information which is proprietary ond the property of Novametrix Medical Systems Inc and may nol be reproduced used or disclosed in whole or in port without the written consent of Novornetrix Medical Systems Inc A SCALE DRAWN DATE Pb Lavater EE ION NIE SEG DATE MEDICAL SYSTEMS INC BENNETT re Mn iw mr ENGR DATE ANALOG BOARD ASSY 005 127 GEH 0025 os MODEL 7300 NICO BE NA EE FRAC 1 64 SR THER Sor Size _
20. DVDD 0 01u Poly 4 t 2N7002 Vo Wee Vo R31 C 220 E 1000 Nc Nc 100 9 Elect VSRC We 35V 832 100 R33 100 R34 14 10 gt DAS C15 4 7u TP15 Tant 10V 838 TP16 E 10 lt i C19 C20 0822 Seiad 1 100 Novametrix as Tant MODEL 7300 NICO Medical viens Dae DA2V5 See eae aes 5 Technology Drive 25 21 RHD Checked MAL Wallingford CT USA 4 4 0822 4 2148198 Document Number Code i o SWayss 24 2764 03 00 Prod 2 Power 2764 Rev R No By Dale Date Wednesday June 02 1999 of 6 22 10 23 R40 Tant 0 01u 100K CHARDOTL 2 35V R41 P 6 05 100 4 2N7002 R43 c 100 k 247002 CSOFTOT gt VHTR D C24 D5 0 0400 R44 07000 C CASEPWM gt 25 IC10A 499 TC1426 E gt DHARDOTL gt R46 100K R48 100 DSOFTOT gt lt 12 2 7002 C31 D7 0 010 R49 07000 gt 5 1 10 499 1426 E 100 62 C34 4 0 1u C36 C37 68u 68u gt Tant Tant R53 D9 16V 16V Q11 MMSZ5236 8 SPO2LPON 2 1 12222 10 3 P p p C43 R58 0 014 1 RDLEDL SPO2VLED gt 47
21. External UART Interrupt 0 External UART Interrupt IRQ5 PF5 EXTDCIN Indicates external AC MAINS power operation PWRDWN System power down enable 7 NMIL FA Non Maskable Interrupt Table 4 Chip Select Control and Discrete 1 Signal names with an L suffix are active low signals Background Mode Debugging and Application Development Refer to sheet 1 on 2763 03 schematic Background debugging of the system during applications development or during system testing is possible by connecting an appropriate external device emulator or debugger to header J1 The signals present on this header enable an external device to halt the current microprocessor bus activity This turns control of the microprocessor system over to the external device placing the microcontroller into Background Debugging Mode In this mode the internal MPU registers can be viewed and altered special test features can be invoked and the system s memory and peripherals can be read and written to Refer to sheet 2 on 2763 03 schematic In addition to the inherent debugging capabilities of the microprocessor the digital board also contains circuitry to monitor events during application development Output latches IC15 and 1 17 along with Profiling header are used to determine CPU utilization during system development latching various status bits out on the header System Memory Refer to sheet 1 on 2763 03 schematic
22. SEE FIELD OF DRAWING 250109 1 FOR LENGTHS 160030 6 PL 608129 5 8 IN D SEE FIELD OF DRAWING FOR LENGTHS 1 2 IN 250169 DETAIL 1 1 a 608129 5 8 IN 608129 5 8 IN 250171 NOTE ORIENTATION peta E 250171 SEE NOTE 1 250134 NOTE ORIENTATION 608129 5 8 IN 2 IN SEE NOTE 1 608129 5 8 IN 1 1 2 IN 1 1 2 IN 4 1 2 IN 1 4 IN 5 1 2 IN d 1 4 IN 3 4 Ml dr E 0 ft wa 3 4 IN C 160030 2 PL 160030 7 PL SEE NOTE 1 SEE FIELD OF DRAWING 1 1 2 IN 790109 808129 OF DRAWING per ui 608129 5 8 IN FOR LENGTHS FOR LENGTHS 2 3 4 IN DETAIL B 5 8 IN C SEE DETAIL ES lt z 160030 4 PL V5 uu 32 RESERVOIR POR a SEE DETAIL D 2 2 5 4 IN 2 1 I PUMP OUTPUT t SEE NOTE 1 1 608129 5 8 IN 250169 B 2 V4 SEE DETAIL A DETAIL DETAIL G SEE DETAIL 2e i 5 Tq d 29 SEE DETAIL 3 pd is v2 3 1 DIP END OF TUBING 160030 IN 50 50 OF THF CYCLOHEXANONE 160038 FOR ONE SECOND BLOT END OF TUBING ON ABSORBENT TOWEL TO DRAW SOLVENT OUT OF TUBING BORE INSERT INTO THE LARGER BORE TUBING 608129 APPROX HALF WAY ALLOW TO DRY 10 MINUTES EJ This d t contains information w
23. 0 047u 07000 iL NE 4 44 ABPRESS 2542222 gt gt ABPRESS Novametrix RHD 5 Technology Drive Checked Wallingford CT USA g MJC Approved RHD Document Number Code Rev s zw SPOZIDRV gt SPO2ZADRV gt SPO2LDRV 2 8135 ISAMPL gt 136 0 01 IC33 5 07703 8136 P SPO2IRADCL A SPO2CLK 2 49 SYSUP 1 m E 4 25 1 1 0 047u 47 8140 TP4g 141 R142 61 9 CVDD AVCC C192 aw 47 141 T cw C142 C143 0 01 L 0 01u 0 01u n TP50 D7000 150K R145 145 T 3 92K ped 0 1u Ep Se 22 lt gt 10 R148 IC34A IBW m 100 pw 7 2 C146 R149 0712 IC35A IC36A fee lt gt 0 047 49 9 C147 DG444 AD712 P51 TP52 XK 1 35 0 1 7 06444 150 AVCC CVDD AVCC AVCC CVDD 0 01u SUN s gt C151 xb 0 01 IC37 5 IC35C AD7703 R152 C152 DG444 sPOZADADCLY gt 16_ 0 047 lt e PEL NW SN LASS PO IK AREF2V5 gt 2 Q C154 cV elle y pai AVCC O oY 25 1 0 047u TPs4 R160 2 7002 lt 8159 zb NU 100K C193 47 CVDD 2 026 R166 cv 07000 150 R167 3 92 n l R168 E
24. 2 2 gt 100K gt 100K 5500 5 2 CS VDD NEN E 5501 E 5501 DI 100 is e DO GND 21 gt E 4 dE T2907A VDD 22 0 01u Capnostat ISAMPL o ee S ASAMPL 4 EEEEEEER SPO2RDADCL SSDI Da ee ee al 07000 F0818 1SR SE A LESS SN RST EN CO2ZEROL 9 BEBE ABADCL 22 SPO2CLK 2 SRSTL CO2DATA 1 S SPOZRDR 09 SPO2RDRV CO2CASE 2 55 21 ibis CO2DET 54 45 D7000 CO2ZEROL 100K 55 555 CO2SPANL AWPRESS S A5 L4 SSDO ae FLOW10 2 1 ar lt 55 C FLOW100 m FREF2V5 FLOW1000 9 T NicoPREss SS 12 L5 49 9 CASEHTR 61 LP is DETHTR d DETHTR L6 IC51 ABADCL CO2SRC EE CASEHTR 5500 M TRIMDACL FTDACL 17 SSUEN T SSCLK CO2SRC 618307 COPSRC S 550 FSDI FVDD SSDO FSDO OCDRVO eas Sas YOCDAVI C27 LL SCHEMATIC ANALOG BOARD s OCDRV2 YDD 0 047u Medical Systems Inc 5 Technology Drive TRIMDACE 2 C191 ees Wallingford CT Usa
25. The signal out of the flow IA is taken through a two pole low pass filter 22 with 31 Hz cutoff frequency to remove unwanted high frequency electronic noise is then passed on to the 20 bit sigma delta ADC where it is transformed from an analog voltage into a digital code for processing by the CPU located on the 2763 01 Digital Board Barometric and Airway Pressure Refer to sheet 3 on 2765 03 schematic IC29 is a piezoresistive differential pressure transducer with port P2 held at zero psi It measures the absolute pressure difference at port P1 relative to the vacuum at port P2 The transducer is calibrated for a full scale output of to 15 psi has internal temperature compensation and is designed to be driven by a constant voltage source Instrumentation amplifier IA 1228 conditions this signal to correspond to the current barometric pressure which is set by adjusting VR3 The nominal gain of this amplifier is 67 which corresponds to a 12 bit ADC count of 4012 at 760 mmHg The output signal from IC 28 is low pass filtered by and appears as an input to both the 12 bit ADC and a second 1227 1227 provides gain adjustment VR2 and offsets the output signal from the barometric amplifier to mid scale during the zeroing state The nominal gain of the airway pressure amplifier is 5 This signal connects to the P1 proximal to the patient side of the differential pressure transducer during monitoring and provi
26. 3 LOWER POSITION RED BATTERY WIRE ALONG BATTERY BEFORE ATTACHING COVER CONNECT RIBBON CABLE FROM DISPLAY ITEM 52 TO 2763 15 CONNECT RIBBON CABLE FROM KEYPANEL ITEM 8 TO 2763 5 VIEW NOTE TOP COVER ITEM 17 REMOVED FOR CLARITY SEE DETAIL SECURE FOOT PAD 7 X38 SECURE FOOT BOTTOM COVER 2 PL 5 WITH ADHESIVE PANEL SUBASSY 4 PL BOTTOM COVER 18 ITEM 14 REF SECURE BOTTOM COVER TO TOP COVER 2 PL 4 UD qe em a am CEE FED a ___ lt 7 sem am s d iem i gt am de aspe de ID D Gm dee UD 4 a ame am gt emm dim d SEE DETAIL B ON SHEET 4 FOR FRONT TO 645 COVER 2 PL as GTS aD CEE GR GED Z 9 49 SECURE FOOT TO BOTTOM COVER 2 PL CONNECT CO2 INPUT BD ASSY RIBBON CABLE ITEM 4 TO 2765 J2 SEE DETAIL B ON SHEET 4 FOR SUBASSY 1 FOR SYSTEM TEST PROCEDURE 9226 04 2 FOR OVERALL WIRING DIAGRAM SEE 09226 09 KH 21 BEZEL SUBASSY BOTTOM VIEW NOTES be reproduced 7 3 en Dropar nig ed ls ji ny or disclosed in whole or in part without the written consent of Novametrix M
27. 315032 LABEL 1 _ 60008 UNECORDACTIZFTLIZVAC oo _ 10 2 9226 01 Main Assy ANALOG BOARD ASSY 006 6761 16 RIGHT FOOT WHITE KICKSTAND GASKET PCB 7300 NICO Rev 00 Model 7300 Service Manual 55 Parts Lists 2763 01 Digital Board Assy Deseriton EPOXY 2 PART 5 7 GRAY 02 1667 05 28044 STANDOFFUAHEXX Tie ______ 0 280245 UAHEXX I6 ooo 058 16107 ADHESIVE HIGH STRENGTH 0 SCR 4 24 XIL PANHD 0 SCR 4 24 IL HD 040 SCR 4 24 X 5 16L PAN HD AIC 285051 WASHER 500 DIA X 120 286005 SCR 6 32 X 1 4L PAN HD 041 042 043 044 045 0 5 oto wo 515005 FUSELAz8VSIORO 2 10 3 2763 01 Digital Board Assy 486037 IC HM628128LFP 12 128K 474233 RESISTOR 10K OHM 1 16W 0 0 0 0 0 0 0 50 51 52 53 54 55 56 57 18094 FERNTEFLTERAUNEM 2 486700 ICTTLEEXCD DURLOPAMR INDUCTOR SOMHZ CUT OFF Js 18 0 INDUCTOR ooo 56 Model 7300 Service Manual Rev 00 2763 01 Digital Board Assy Parts Lists 10 PartNo Dewnpton omw 47430 RESISTOR 100K ORM VIGW fe 48756 DIODE SWITCHING SURFMT fe 487004 RESISTOR22MOHW 1 1800955 FERRIEFLTERBUNE 3 INDUCTOR 10UH 1096 SURF MT HOT
28. A 16 bit wide data path is used for FLASH PROM and SRAM transfers to maximize system throughput Non volatile memory used for the storage of the boot up and main program code is contained IC4 a 1024K x 8 bit FLASH ROM To initiate the data transfer process the MPU brings the ROMOEL output signal LOW causing a word of program data stored in the FLASH ROM to be sent out on the data bus from the appropriate memory address Program data may be updated by commanding the device to erase a block of its present programmed data then using the ROMWRL signal to place new program data into the address specified by the MPU The FLASH ROM is internally protected from unintentional overwrites of the boot code by requiring an independent signal BOOTWE going active in addition to ROMWRL The BOOTWE line must be high prior to writing new boot code into the FLASH device Two 128K x 8 bit Static RAMs and IC6 contain volatile data storage for use as a temporary data scratch pad during system operation and for recording patient trend information To Model 7300 Service Manual 11 3 Theory of Operation 3 2 4 3 2 5 Digital Board 2763 retain patient trending data during periods of power down the SRAMs are battery backed to retain their contents A 2 5 Volt level VBACK generated from the main battery via IC30 on the 2764 Power Board is supplied when the system is turned off and removed from the AC MAINS During this battery backed up state
29. EXIT the diagnostic screen select 5 2 in the SELECT A SCREEN menu Verify the Saturation and Pulse values for the following TB500B Saturation settings Verify the pleth waveform is consistent and free of noise Test Box Switch Settings oaturation Saturation Setting Signal Attenuation Tolerance Range 100 3 98 100 82 3 80 84 62 3 60 64 72 7 68 76 92 7 88 96 Verify Pulse rate is 60 1 for all settings Disconnect the TB500B from the unit and turn it OFF 5 4 Flow Testing 30 3 32 33 34 35 36 37 38 39 40 Turn the knob until the FLOW PAW screen is displayed Connect the 500ml calibration syringe to the NICO sensor Pump the calibration syringe back and forth with a steady motion at a rate of 20 cycles per minute Verify the Vte and Vti are 500 x 25 Disconnect the 500ml calibration syringe from the NICO sensor Press and hold the MENU and DATA ENTRY keys simultaneously until the CONFIGURATION MENU appears Select DIAGNOSTIC SCREENS then select FLOW Connect the 9695 48 Leak Test Adapter to the unit Pull the syringe back oet the stop cock open Push in the syringe until the airway pressure Paw reads 100cmH5O Close the stop cock Verify the pressure remains above 90 gt after 30 seconds 5 5 Time Date Setting 41 42 43 Rev 00 Press the Menu button Verify the select a screen menu is displayed Select the setup screen Verify the setup screen is di
30. Make certain that the sensor windows are clean and dry Do not immerse the CAPNOSTAT sensor Do not attempt to sterilize the CAPNOSTAT sensor Rev 00 Disassembly Maintenance 7 4 Disassembly CAUTION The Model 7300 contains static sensitive devices Be sure to follow proper grounding procedures when handling the internal components to avoid damage from static discharge 7 4 1 Equipment Required Phillips screwdriver Small flat blade screwdriver 7 4 2 Disassembling Unit 1 Check that the monitor is OFF 2 Set the rear panel power entry module switch to OFF O Remove the line cord from the power entry module if connected 3 Turn the unit over to expose the bottom remove two screws from the body of the unit and two more from the handle NOTE Body screws are long Body Handle 4 Holding the unit together with both hands turn it right side up then slide the top cover off by pulling gently straight up Rev 00 Model 7300 Service Manual 43 Maintenance Reassembling Unit 5 Place the top cover and screws aside 6 If necessary the bottom cover can be removed to access to the analog board It is not recommended to disassemble the unit any further as damage may result 7 5 Reassembling Unit 1 Check that the line cord is not connected Verify proper connections on the internal battery 2 Check that there is no loose hardware or objects within the chassis assembly
31. Replace the NICO sensor if excessive moisture or secretions are observed in the tubing Do not use the NICO monitor if it is unable to properly identify the NICO sensor If the condition persists refer the monitor to qualified service personnel The NICO sensor connector should be properly inserted into the front panel receptacle prior to connecting the NICO sensor to the breathing circuit in order to avoid a circuit leak or occlusion of the NICO sensor tubing Model 7300 Service Manual 1 1 Safety Cautions In the event the message NICO SENSOR FAILURE 15 displayed remove the NICO Sensor from the patient circuit Patient Safety Care should be exercised to assure continued peripheral perfusion distal to the SpO sensor site after application Inspect the SpO sensor site for adequate circulation at least once every four hours When applying sensors take note of patient s physiological condition For example burn patients may exhibit more sensitivity to heat and pressure and therefore additional consideration such as more frequent site checks may be appropriate Do not position sensor cables or tubing in any manner that may cause entanglement or strangulation The NICO monitor is not intended to be used as a primary apnea monitor 1 2 Cautions CAUTION Indicates a condition that may lead to equipment damage or malfunction Use only Novametrix approved sensors and accessories with the NICO monitor Do no
32. File Power 2764 Sheet 2 Rev Date Date Wednesday June 02 1999 of 5 220 IC15F SN74HC14D wh 3 00 CD Gn fe to Aux Serial VDD 21 IVDD LT1134A 2 165 R166 167 168 1K T1 icig F LT1460KCS3 2 5 LC2274 D12 IREF2V5 IVDD 1620 v 0834 C61 VCC REF R169 R170 R171 R172 DGND AGND b CS CHO CLK DI CH2 DO CH3 SARS Y R81 HCPL 2631 0 047u 499 gt EI Him IC18D TLC2274 22 IVDD 0 TLC5620C 1 23 66 A R83 HCPL 2631 0 047u 499 UE SGH FI zd IVDD cog E IVDD 0 010 018 IREF2V5 s D7000 884 019 R85 100 R86 D7000 499 25 IVDD 7500 R87 VDD 26 100K C70 HCPL 2631 0 047 R90 E 4 4 L cm 1 I E Novametrix Medical Systems Inc S Technology Drive RHD Checked MRL Wallingford CT USA 21Jan98 06492 maaan Pao amar fis met os Jen 2764 03 o 0 Prod 3 05 5 1 00 I File 2764 Sheet By Date Dale Wednesday June 02 1999 of 6 VDCIN
33. IC TLC5620CD QUAD 8 B 30 w RES PACK 10K OHM 1W 00 Model 7300 Service Manual 57 Parts Lists 2764 01 Power Board Assy 77654 CAPACITOR 4 7 10V n 46 10 4 2764 01 Power Board Assy NO 58 Model 7300 Service Manual Rev 00 2764 01 Power Board Assy Parts Lists 10 184081 CAPACITOR o eo 485325 TC MCMOBD ooo RESISTOR JOOMOHM TW 1 RESISTORGTAKOHM 4 INDUCTOR 220UH 20 FUSE W FUSEHOLDER 2A 26 INDUCTOR 50 OHMS 100M CONN 96 PIN RCPT STR CAPACITOR 47UF 50V FUSE W FUSEHOLDER IA 1 2 1 1 Rev 00 Model 7300 Service Manual 59 Parts Lists 2764 01 Power Board Assy 15472 CAPACITOR 9 INDUCTOR 100UH 10 SUR 4493 RESISTOR 887KOHM 16 16 2 E 50 5 RES PACK 1K OHM 1W RESISTOR 470K OHM 33W 60 Model 7300 Service Manual Rev 00 2764 01 Power Board Assy Parts Lists 10 1 1 66 3 o RESISTOR 10K OHM 1 4W B 804p WREBUS2BWG ooo RESISTOR TOOHM 806812 WIRE SWGSOUD PVC fo _ 47429 RESISTOR 208K OHM ao _ 48547 DIODE HOTCARRIER e 45 RESISTOR MORM 18 _ 4742456 RESISTOR MOHM WHEW 16 _ 474233 RESISTOR 30 _ 474233 RESISTOR TOKOH
34. R19 R24 R26 R2B 30 R33 R48 R56 R60 R100 R101 R42 R44 R58 R45 R46 R2 R13 R16 R35 R39 40 RP1 RP4 RP9 RPIO 5 7 474233 474235 474235 474240 474242 474247 474311 474313 474316 8 7 7 REF DES C7 C15 C20 C42 C56 C58 C63 C64 481546 485019 485532 486037 486042 486055 486314 486320 496323 486365 486367 486790 487094 487114 487132 487138 515087 515094 DESCRIPTION DIODE SWITCHING LED RED WITH LENS TRANSISTOR PNP 50 TRANSISTOR N 23 128 X BITS 32 PIN IC SERIAL 4k EEPROM 8 PIN STATIC 4M BIT 512k X B BIT SOP BUFFER LINE DRIVER RECEIVER IC HEX SCHMITT TRIGGER INVERTER OCTAL D TYPE LATCH WITH 3 STATE OUTPUT IC 12 STAGE BINARY COUNTER 16 PIN MICROCONTROLLER 25 17MHz DECADE COUNTER HIGH SPEED 16 PIN IC QUAD 8 BIT 0 CONVERTER 14 PIN IC DUAL OP AMP HIGH SPEED LOW POWER IC REAL TIME CLOCK WITH QUARTZ CRYSTAL IC AUDIO AMPLIFIER LOW POWER PIN IC SUPPLY VOLT RGLTR amp VOLT DET 4 PIN GRAPHICS LCD CONT LOW POWER 100 PIN SWITCH SLIDE SPOT 4 SWITCHES 050 SP FUSE WITH FUSEHOLDER 125V SLO FUSE WITH FUSEHOLDER 1257 SLO BLO 6 REF DES DESCRIPTION REF DES DESCRIPTION REF DES IC18 1222 IC14 1815 1217
35. This symbol is found on the internal battery Indicates heavy metal content specifically lead This symbol is found on the internal battery and the monitor enclosure 1 Remove the line cord from the unit if installed 2 The internal battery will slowly discharge over long periods of non use 44 Model 7300 Service Manual Rev 00 Mains Voltage Configuration Maintenance 2 With the top cover removed disconnect the positive then the negative lead from the battery terminals Tab Negative black terminal Positive red terminal _________ Lf U 3 Newer units will have a tab that extends from the rear panel to the rear edge of the battery To remove the battery on these units carefully flex the tab to the left and tilt the battery to the right and pull the battery out For other units simply slide the battery out by tilting the back up slightly to clear the front edge of the monitor and pulling straight up 4 Replace the battery and reconnect the negative lead first being careful to connect the negative black lead to the negative black terminal on the battery 5 Connect the positive red lead to the positive red terminal The unit may turn on when the positive lead is connected simply press the power key to turn the unit off 7 8 Mains Voltage Configuration The rear panel indicates the mains voltage setting for the monitor Check that the voltage is correct before att
36. Verify all wires and cables are properly secured 3 Align the top cover with the unit and push down to seat 4 Holding the unit together with both hands turn it bottom side up 5 Replace two screws in the body of the unit and two more in the handle NOTE Body screws are longer 7 6 Battery Maintenance If the monitor has not been used or powered by AC for an extended time 3 months or more allow the battery to charge for 12 hours before use The monitor may not power up on battery power if the battery is not sufficiently charged To charge the battery connect the power cord see below and set the rear panel power switch ON 49 Check that the front panel LED is on Allow the battery to charge for 12 hours to ensure a fully charged battery in the event that battery power is required The AC power line cord shipped with monitors for North America is a Hospital Grade SJT style cord with a 120 VAC plug All power line cords shipped with monitors for Europe are the European style with a 220 240 VAC plug All other style power line cords as required by the country of destination are provided by the distributor for that country 7 7 Replacing the Internal Battery i Recyclable item After the life cycle of the item has been met disposal should be accomplished following national local requirements Separate collection Appropriate steps must be taken to ensure that spent batteries are collected separately when disposed of
37. Verify the status returns to 0 Turn the TB500B OFF Verify the status line reads 3 Low Light Turn the TB500B ON Verify the status returns to 0 Press and hold the RED open test button on the TB500B Verify the status is 13 IR LED FAIL Release the RED open test button Verify the status returns to O Press and hold the INFRARED open test button on the TB500B Verify the status is 12 Probe Error Release the INFRARED open test button Verify the status returns to 0 EXIT the diagnostic screen select CO2 SpO in the SELECT A SCREEN menu Verify the Saturation and Pulse values for the following TB500B Saturation settings Verify the pleth waveform is consistent and free of noise Test Box Switch Settings Saturation Saturation Setting signal Attenuation Tolerance Range 100 3 98 100 82 3 80 84 62 3 60 64 72 7 68 76 92 7 88 96 Verify Pulse rate is 60 1 for all settings Disconnect the TB500B from the unit and set POWER OFF 6 6 Flow Barometric Pressure and Rebreathe Valve Testing 46 47 48 49 50 Press and hold the MENU and DATA ENTRY keys simultaneously until the CONFIGURATION MENU appears Select DIAGNOSTIC SCREENS then select FLOW Verify SENSOR is 0 Connect the 5 test jack to the monitor Verify 5 Unknown is displayed Connect the A test jack to the monitor Verify 10 Unknown is displayed Record the current barometric pr
38. o xo In this procedure the term select refers to highlighting a selection on the screen by turning the knob then pressing it in to select the highlighted option Connect the monitor to the AC line Set the rear panel power entry module switch ON Verify the AC LED turns on Press the power switch Verify the display shows the NICO start up routine followed by the main display screen reference the Users Manual for display appearance Connect the NICO sensor to the monitor Verify an ADULT NICO ADAPTER IDENTIFIED message is momentarily displayed Connect the CAPNOSTAT sensor to the monitor Verify the SENSOR message is replaced by a WARMUP message Place the CAPNOSTAT CO sensor on the NICO sensor airway adapter Press the MENU button Verify the SELECT A SCREEN menu is displayed Select the SETUP screen select ZERO NOW Follow the screen prompts to perform a zero calibration When the zero calibration is complete select EXIT Model 7300 Service Manual 25 4 Functional Testing 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Functional Test NOTE The CAPNOSTAT sensor must reach operating temperature before zeroing Connect the low point calibration gas to the Model 1298 Gas Calibrator Refer to the instructions supplied with the gas calibrator for further instructions Connect the Model 1298 Gas Cali
39. translated transcribed or transmitted in any form or by any means without the prior explicit written permission of Novametrix Medical Systems Inc Novametrix reserves the right to change specifications without notice 2 2 Front and Rear Illustrations Coe me Operate standby key Display screen NICO sensor input connection opO sensor input connection CAPNOSTAT sensor input connection Serial number label Power entry module p OWer CO rd rece pta cle EN RE MCN and fuse housing Wz FS RN 4 NOVAMETRIX 510 _ SYSTEMS INC IGRORD CT U S A Rear panel power switch Power cord retainer Secure power cord Equipotential connection connection to monitor chassis Rear panel power connectors Rev 00 Model 7300 Service Manual 5 2 Introduction NICO Monitor Technical Description 2 3 NICO Monitor Technical Description Per requirements of IEC 601 1 the NICO monitor is classified as class equipment internally powered with type BF applied part and an enclosure protection rating of IPXO The NICO monitor is Year 2000 compliant Transport Storage 10 to 55 14 131 10 95 R H non condensing Operating Conditions 10 to 40 C 50 to 104 F 10 90 non condensing 2 4 Manufacturing Quality amp Safety The Novametrix Medical Systems Inc manufactur
40. 01u R19 R20 R21 R22 R23 R24 R26 R27 R28 R31 R32 893 R94 R34 93 66 10 10 10 10 10 10 10 10 10 10 1 10K C19 0 047u D 0 15 A 0 19 4 ROMOEL gt ROMWAL 0 01u SRSTL BOOTWE o 10 9 O RESET _ 7757 74HC14 eid gt gt SRSTL Tant C62 16V 47 VOD 9 T2CLK CO2AZ CO2CSHL VDD CO25SH C60 100 RSAMPL RDLEDL SRSTL R10 1K IRLEDL SSDI iK ISAMPL BYTEL R13 100 TOUTI 214 100 TOUT2 15 100 1 TPU15 CNFG2 R16 100K LED CSOFTOT DSOFTOT VDD TSTMEL 5 Y ROMOEL ARTIRQL SRAMOEL NMIL HALTL BKPTL ane BERRL SSDO 00 SSCLK 01 50 02 PCS1 04 q PCS2 Q D5 n PCS3 n 5 07 0504 010 051 011 ASL EXTDCIN DSL Medical Systems Inc HEES Rees RE 5 Technology Drive ae Tian REOR AHD Checked MAL Wallingford CT USA Renee 21Jan9B 2763 01 00 Prod Release _ Digital 2763 Sheet 1 Rev R No _ Date Wednesday June 02 1999 3 0 19 0 0 15 00 100 PHI Wilh R35 100K RP9 51 IC10 74HC541 5 TP6 lt
41. 1 R185 This document contoins information which is proprietory and the property of Novonetrix Medico Systems Inc ond may not be reproduced used or disclosed in whole or in port without the sicud consent of Novornetrix Medical Systems inc E EDICAL SYSTEMS INC c RN woe 7300 REN xs SIE cope Rev 27 99 ORR 2 17 39 D 2764 mv bw SCALE 3 1 SHEET 1 OF 3 1 NOVAMETRIX 276402XX Made in U S A J8 C D TP51 024 024 Ras 3 un x dB hdp e TP50 R147 oeg R117 js 124 R139 028 1 2x EJ 927 Ens 8151 57 29 53 R156 65 5 cri Russ E 1 62 B Pe C69 C56 2119 ca ES cs1 Q5 E E Q8 42 3 015 d C 012 043 31 ces 5 TP32 TT czs R90 D20 R9O EJ P33 EJ TP30 O 7 8 tame C84 TP38 5 me mas i RS
42. 10 4 gt lt eV lt 9169 712 oN 49 9K C162 IC35D Otu DG444 NA AVCC Poly ISAMPL 8170 SAMPL IGNDL VSIGL 2 lt T IC13C SMP04 3 IC38B IC10D TLE2022 2 339 18 BLM11A121SPT 19 1 1 1215 110 61R30T cv Guard Ring SpO2 Sensor C148 47p cv C153 1 155 RD R156 1000 2 05 8153 53 8158 100 157 0 01u R161 249 R163 10K A SPO2PROB TLE2022 R165 C159 2 49K 0 01u C160 C 0 01u AVCC NOTES UNLESS OTHERWISE SPECIFIED RESISTANCE VALUES ARE IN OHMS UNLESS OTHERWISE SPECIFIED CAPACITANCE VALUES ARE IN FARADS UNLESS OTHERWISE SPECIFIED INDUCTANCE VALUES ARE IN HENRYS LAST USED REF DES 193 037 1 51 97 113 011 245 TP68 V6 VR5 NOT FITTED C90 D17 1C24 1C47 J7 L13 R14 R80 R96 R200 R236 R240 R241 R242 REF DES NOT USED RP1 R232 Q11 1 16 W 1 C Un gt Novametrix Medical Systems Inc 5 Technology Drive RHD Checked MRL Wallingford CT USA pe pg 21Jan38 06492 Mig MJC Approved Size Document Number Code 0i Nee 64 B 2765 03 Prod Release Fie 2765 Sheet 4 Date Wednesday June 02 1999 ol 5 Drawn Date V1 LFAA0509415H C164 220u 7 Elect E E v2 R179 7
43. 15 3 Theory of Operation Power Supply 2764 Power Supply and Communications measured during the last part of the SCRDRVO period by differential amplifier IC3A and is inputted to IC9 see sheet 2 on schematic a 12 bit 11 channel A D Converter after being conditioned by the sample hold circuit consisting of IC4 IC5 and C11 The converter output of the sample hold is processed in software to represent the current flowing through the CAPNOSTAT source Vsnc Rsg Rs where voltage out of difference amplifier proportional to current through the source element 24V 0 625 Van differential voltage across the source element resistance of the source element Rs resistance of the current sensing resistor ohm Ay pa 7 difference amplifier gain 5 120 Volts Ohms Ohms For compatibility with present Novametrix monitors software displays source current scaled by 1 1Vsrc 17 In addition to monitoring the source current the A D Converter 129 also digitizes the feedback signals from the Saturation sensor and Power Supply In order to prevent the source from being driven until the system is up and ready there is protection circuitry that inhibits the source drive until enabled During system power up the RESET line keeps Q3 on preventing source pulses by pulling down SRCDRVO and SCRDRV1 through D3 Protection circuitry also guards against e
44. 33V 10 C36 C42 154143 _ CAPACITOR O1uF SOV 5X 1210 STYLE C41 C55 C62 C67 C69 C182 14 17 L10 FERRITE BEAD 120 OHMS 100MHz LB L9 111 112 212501 CONNECTOR 20 PIN HEADER DUAL ROW CONNECTOR 40 PIN HEADER ELEV 078 SP Yr 216029 250136 250169 250171 TEST POINT SPRING LOADED 475 C FITTING TEE FOR 1 16 ID TUBING WHITE FILTER UNE 25 MICRON FOR 1 8 ID TUBING TE ee 8 211527 CONNECTOR 5 PIN HEADER 1 SP J8 J2 41 JS TP10 TP13 16 19 TP24 TP34 TP40 TP43 TP45 TP63 65 66 250146 250151 284008 474157 474175 474194 474195 474197 474198 474222 474225 478224 474225 474227 474228 474229 474250 474253 474234 474235 474236 474238 474259 474240 474241 474242 474245 474251 474256 474259 474261 474265 474271 VALVE SOLENOID 5V 0 20 PSIG 3 RESISTOR 49 9k OHM 1 16W 1 RESISTOR 10 OHM 1 16W 1 RESISTOR 100 OHM 1 15W 1 RESISTOR 1k OHM 1 16W 1 RESISTOR 10k OHM 1 16W 1 RESISTOR 24 9k OHM 1 15W 1 RESISTOR 75k OHM 1 16W 1 RESISTOR 100k OHM 1 16W 1 RESISTOR 249k OHM 1 16W 1 RESISTOR 61 9k OHM 1 16W 1 RESISTOR ZERO OHM 0603 STYLE RESISTOR 1 OHM 1 4W 1 RESISTOR 402 1 16 1 RESISTOR 1 21k OHM 1 16W 1
45. Heater Regulation 21 Flow Zeroing and Patient Line Purging 22 acct uate _ _ ___ 22 Barometric and Airway 23 Patient Airway Adapter Type Sensing 23 NICO Sensor Rebreathing Valve Control 24 Saturation Input Signal Path and Signal Conversion 2 24 O 25 EQUIPMENT _ 25 F nctional HT 25 PRECUT ACY TESIS 2 29 4 1 M L 29 eed 29 30 xo TESNO 31 31 2 1 TESIS annor 33 0086 Rev 00 Model 7300 Service Manual vi EGUIDIMOEME REQUE seris UT CCP 33 PONOT gt e 34 Voltage PP 35 Reo cup cene 37 atto M LA DM xd LU MEE 37 Flow Barometric Pressure and Rebreathe Valve Testing 38 Senal An
46. Inc 00 20208 NOVAMETRIX DATE MEDICAL SYSTEMS INC NOT SCALE NLESS OTHERWISE SPECIFIED Meu u DIMENSIONS ARE IN INCHES mrn BREAK ALL SHARP EDGES x 0 TOLERANCES 005 FRAC 1 64 CO2 INPUT BOARD ASSY XXXX 0025 ANG 1 4 MODEL 7300 NICO T fli SIZE DRAWING NO CODE 4 t je LY lic 2766 01 00 FINISH dits NEXT ASSY 09226 01 SCALE 2 1 SHEET 1 OF 1 8 7 6 5 4 3 2 DATA 1 Capnostat p p SCHEMATIC 2 Novametrix 5 Technology Drive Pf awe RHD Wallingford USA steve MR LL M a RHD EN Document Number Rev RG teens ae sal 2 25 4 2766 00 00 2786900 Rev R No Date Tuesday February 23 1999 at 1
47. L14 D35 115 100 31 5005 NEST gt IC35C gt DISPVA MBRS340T3 C98 C99 R127 LP339 2A SB 1500u 220u 470 R125 2 4 Elect Elect C100 n 128 1 0 01u C133 16V 35V 59 gt 100p 8130 55 UT lt lt 8131 75 1C37 L18 D37 gt gt ADCVDD VDCIN F4 3A LM2596 22uH MBRS340T3 IN Vin Vout SB C103 2 117 C101 0 0tu On Off 31P5005 220u GND D38 gt gt ADCNVSRC Elect R135 MBRS340T3 R136 C104 IC28B 35V 24 9K 5 8 87 3 3n TLE2022 R139 9140 100 47 022 1 T2222A ae A C105 e _____________________ SCHEMATIC POWER BOARD Novametrix BN 1142 c MODEL 7300 NICO Medical Systems Inc 5 Technology Driv DENB gt 0 5851 Py CU USA 12222 RE SEMI 2113098 06492 eee 01 Neso 9 279 2764 00 Prod Release File Power 2764 Sheet 4 1038 78105 LINEST lt lt vi H GND GND GND GND INC NC D39 F5 L20 MBRS340T3 SB 61R30T VIN aa Power In Q25A 514947 VDCIN lt MBRS340T3 lt R143 VCH C 150 1 3W 5 Q25B 14947 920 2N7002 F6 1A SB C134 100p 040 MBRS340T3 4 7 3 4W C109 220 Elect VCH 35V
48. Maintenance Cleaning and Sterilization 7 3 3 SpO Y Sensor Do not immerse connector on the Y Sensor The Y Sensor may be immersed up to but not including the connector in a 2 glutheralhyde solution or 10 bleach solution Refer to manufacturer s instructions and standard hospital protocols to determine recommended times for disinfection and sterilization Rinse thoroughly with water and dry before use do not rinse the connector Do not attempt to sterilize Y Sensor except as stated above After cleaning or sterilizing the Y Sensor verify that the sensor is physically intact with no broken or frayed wires or damaged parts Make certain that the connectors are clean and dry with no signs of contamination or corrosion Do not use a broken or damaged sensor or one with wet contaminated or corroded connectors 7 3 4 SpO 5 Tapes and Foam Wraps Treat Y Strip Tapes and foam wraps in accordance with hospital protocol for single patient use items 7 3 9 Clean the ear clip with a cloth dampened with 70 isopropyl alcohol After cleaning wipe the ear clip down thoroughly with a clean water dampened cloth to rinse 7 3 6 NICO Sensors Treat the NICO sensor in accordance with hospital protocol for single patient use items Do not attempt to reuse clean or sterilize the NICO sensor 7 3 7 42 Model 7300 Service Manual Clean the sensor surface with a damp cloth
49. R65 0 01u IRLEDL M SSDI lt 02158 lt lt 2 SPO2RDLEO SPO2IRLED SPO2FEDC i i SPO2PROB 4 VBATTADC VSPUMP gu AE CASEHTR ADCPVSRC T in L1 mens ENS ADCNVSRC 2200 8179 gt gt CASEHTR 100 X 220 C26 4 MBRS140T Don DBADCL lt lt Elect SSDO 5 514947 35V TC SSCLK lt lt 5 t DVDD Fy 20 C28 C29 C30 J C27 10 0 0 10u 2543 0 010 25V 25V _ Q7B TP22 14947 T DETHTR 4 A 220 __ E gt gt DETHTR C32 D8 220u C33 MBRS140T Elect 0 010 35 3 c gt gt SPO2LDRV VA C35 T 0 01 SPO2RDRV TP23 1072 4 N 100 VN0605 135 100K E SPO2RDLED C39 7 5K R189 109p 4 99K R56 C42 33 2 012 VA 8157 0 01 2 7002 Q 4 857 3 3 TP24 Wo 1 1 3W gt gt SPO2IDRV 859 10128 R60 24 9 26 TL072 _ 100K gt lt 013 100 VN0605 SPO2IRLED C44 VDD 100 R62 R63 R61 7 5K R188 C46 33 2K 24 9K 4 99K 0 01u TP28 914 8159 e Mex 2N7002 t iK C Vo 864 5 6 27 3 1 3W ns ees Nc p L1 SCHEMATIC POWER BOARD Novametrix 5 Technol Driv RHD Checked MRL Wallingford CT USA PE Fore 21Jan98 2 MJC Approved UL E Document Number or f 80 19 B 2764 03 02 00 Prod Release
50. RESISTOR 2 05k OHM 1 16W 1 RESISTOR 3 32k OHM 1 16W 1 R32 R47 6 DESCRIPTION REF DES V1 V2 V5 VALVE SOLENOID 5V 0 30 PSIG 2 WAY V4 SCREW 2 56 X 1 4 SELF TAPPING SCREW 4 24 X 5 16L THD FORMING R23 R24 R28 R37 R39 R42 R55 R55 R58 R70 R71 R115 R149 R169 R203 R207 R225 R227 RESISTOR 2 49k OHM 1 16W 1 R110 R165 R4 RS R7 R17 R21 R94 R136 R138 R145 R146 R152 R154 R157 R162 168 R224 R233 R234 R235 RESISTOR 49 9 OHM 1 16W 1 R3 RB R11 R15 16 RID R29 R43 R78 R79 R85 RBB R95 R97 R100 R106 R107 R113 R116 R121 R126 R132 R135 R135 R140 R148 R160 R170 R173 R215 RESISTOR 499 OHM 1 16W 1 R52 R66 R122 RI31 R50 51 53 R59 R60 R amp 3 R55 R67 R76 ROB R103 R104 R112 R119 R128 R147 R150 R176 R161 R188 R192 R222 R223 R1 R2 RG R26 R27 R72 RBZ R91 R92 R101 R102 R117 R120 R163 R201 R205 R218 R220 R245 RESISTOR 20 5k OHM 1 16W 1 R31 R45 R22 R30 R44 R45 R73 R164 R213 R214 RESISTOR 33 2k OHM 1 16 1 R33 R38 RESISTOR 37 4 OHM 1 15W 1 R49 R89 R90 R123 R127 R129 R134 R216 R217 R12 R13 RiB R25 R34 R36 R40 R68 R77 R81 R93 R99 R105 R109 R114 R118 R139 R151 R158 R159 R175 R177 R180 R182 R1B3 R186 R187 R189 R191 R194 R196 R199 R202 R204 R206 R209 R221 R226 R228 R
51. Regulated and filtered positive supply for the Capnostat Source Tracks VSRC to provide a 24V 2 5 differential voltage across the source ADCPVS 0 85VDC ADC input for monitoring VSRC RC VSRC 12VDC Linearly Regulated and filtered negative supply for the Capnostat Source Tracked by VSRC to provide a 24V 2 5 differential voltage across the source 0 75VDC ADC input for monitoring VSRC 14VDC nominal Loosely regulated off of the SVDC feedback ine regulated off of the 5VDC feedback line IRAW 7 5VDC nominal Loosely regulated off of the 5VDC feedback line isolated from the other transformer windings IVDD 5VDC Linearly Regulated to provide an isolated digital and analog power source Table 9 Power Supply Outputs 3 3 6 Logic and Input Output Signal Control Refer to sheet 6 on 2764 03 schematic Chip selection for the serial peripherals are provided by decoders IC43 and IC46 and by the inverters IC47 IC45E and IC45F Latch 41 is used mainly to control the system pneumatics with Latch 1242 providing additional control signals for the N CO 2765 01 Analog Board Input buffer 44 allows the digital system to read various status signals from the Analog Board 3 4 Analog Board 2765 01 3 4 1 CAPNOSTAT Interface Refer to sheet 1 on 2765 03 schematic A twenty pin connector J2 interfaces the CAPNOSTAT with the system electronics Ferrite filters have been placed on all lines to suppress radiat
52. Style Taping System 100 per box for use with Y Sensor Use on neonatal foot and hand or on pediatric toe or finger color coded blue 25mm Wrap Style Taping System 100 per box for use with Y Sensor Use on neonatal foot and hand color coded green 20mm Finger Style Taping System 100 per box for use with Y Sensor Use on pediatric finger or on small adult finger color coded blue 25mm Finger Style Taping System 100 per box for use with Y Sensor Use on adult finger color coded green Adhesive Foam Wraps Large 25 per box for use with Y Sensor Adhesive Foam Wraps Small 25 per box for use with Y Sensor Non Adhesive Foam Wraps Large 25 per box for use with Y Sensor Non Adhesive Foam Wraps Small 25 per box for use with Y Sensor Ear Clips 5 per box for use with Y Sensor Ear Clips 25 per box for use with Y Sensor Adhesive Dots 200 per box Power Cord included with monitor NICO User Manual NICO Service Manual Model 7300 Service Manual 53 9 NICO Accessories This page intentionally blank 54 Model 7300 Service Manual Rev 00 1 Parts Lists 10 1 9226 00 Non Invasive Cardiac Output Monitor Model 7300 PartNo 003 47622 CAUTIONGROUNDING 1 05 92632 LABEL MANUFACTUREDINUSA 1 92601 044 9486 32 LABELSELREARPNLTXO 1 TOP COVER LABEL 7300 046 98143 FACADEWPADPRINL7XO i _
53. a level appropriate to your protocol and budget requirements Please contact Technical Support for information on these additional programs and services Focus Series Technical Training Seminars Test Equipment and Test Kits Service Contract Parts Insurance Plans On Site Technical Support e Demand Services including Flat rate parts exchange Flat rate return for repair Time and material Full warranty discounted replacement sensors 00 7300 Service Equipment manufactured or distributed Novametrix Medical Systems Inc is fully guaranteed covering materials and workmanship for a period of one year from the date of shipment except for certain disposable products and products with stated guarantees other than one year Novametrix reserves the right to perform guarantee service s at its factory at an authorized repair station or at the customer s installation Novametrix obligations under this guarantee are limited to repairs or at Novametrix option replacement of any defective parts of our equipment except fuses batteries and calibration gasses without charge if said defects occur during normal service Claims for damages during shipment must be filed promptly with the transportation company All correspondence concerning the equipment must specify both the model name and number and the serial number as it appears on the equipment Improper use
54. and 5 on 2765 03 schematic To initiate a cycle and switch the external N CO Valve from non rebreathing to rebreathing mode valve V5 is energized which switches the tubing to the external valve from atmosphere to the pump The pump is turned on causing the diaphragm in the N CO valve to switch to rebreathing mode The pressure in the airline is monitored by pressure transducer IC32 and IC31 When adequate pressure to switch the valve is reached the pump turns off and the software continues to monitor the airline pressure to ensure pressure is maintained Valve V6 has a time out watchdog IC44B to ensure that software control over the external N CO valve is maintained 3 4 9 Saturation Input Signal Path and Signal Conversion Refer to sheet 4 on 2765 03 schematic On power up the system performs a self calibration cycle to establish the level of background circuit offset Calibration is performed by coordinating the control signals SPO2CAL SPO2SC1 ASAMPL RSAMPL ISAMPL SIGNDL and INSIGL Once the system baseline has been acquired the Red and Infrared ADCs IC33 and IC37 adjust their output to compensate for any system offsets found Since the LED drives are staggered a single detector is used to multiplex the individual signals on a common signal input line Amplifier IC36B performs a current to voltage conversion on the input signal and analog switch IC35 steers the signal to the proper 20 bit ADC based upon the LED channel
55. pneumatic calibrator to the NICO port on the common mode test fixture Adjust VR4 on the 2765 board for PRESS2 ADC value of 120 1 0 cmH5O Disconnect the common mode test fixture and the plug test fixture Reconnect the filter and tubing to V5 on the 2765 board Connect the NICO sensor to the monitor Select REBREATHE Verify the pump starts and the PRESS2 ADC rises above 120 Select REBREATHE again verify the PRESS2 ADC drops to 0 Disconnect the NICO sensor Model 7300 Service Manual 39 6 Electronic Tests Serial Analog Testing 6 7 Serial Analog Testing 69 70 71 72 73 74 75 76 77 78 79 Verify switches 2 and 3 of S1 verify LED D2 is blinking 2763 board From the DIAGNOSTIC SCREENS select SYSTEM verify the Analog Connected Status is Connect pins 8 and 15 together on the rear panel ANALOG connector Verify the Analog Connected status is Yes Connect pins 2 and 11 together on the rear panel ANALOG connector Select ANALOG from the SYSTEM DIAGNOSTIC SCREEN Press the knob in to cycle through the different Output values listed verify the Input values below Output Input 0 0 5 128 128 5 255 255 5 Repeat for the following pin combinations pins 3 and 12 pins 4 13 pins 5 and 14 Connect pins 2 and 3 together on the RS232 1 connector Select SERIAL 1 verify TESTING Ch1 appears followed by PASS Ch1 Conne
56. the cleaning and sterilization instructions listed below to clean and or sterilize the monitor and its accessories 7 3 1 Monitor Turn the monitor off and unplug the line cord from the AC line before cleaning The monitor can be cleaned and disinfected with solutions such as a 0 isopropyl alcohol 2 glutheralhyde or 10 bleach solution Then wipe down with a water dampened clean cloth to rinse Dry before use Do not Immerse the monitor Do not attempt to sterilize the monitor 7 3 2 SpO Finger Sensor The sensor can be cleaned and disinfected with solutions such as a 709 isopropyl alcohol 2 glutheralhyde or 10 bleach solution Then wipe down with a water dampened clean cloth to rinse Dry before use Make certain that the finger sensor windows are clean and dry before reuse Do not immerse the finger sensor Do not attempt to sterilize the finger sensor After cleaning the finger sensor verify that the sensor is physically intact with no broken or frayed wires or damaged parts Make certain that the connectors are clean and dry with no signs of contamination or corrosion Do not use a broken or damaged sensor or one with wet contaminated or corroded connectors 1 At the customer s request Novametrix will provide repair and calibration services under terms of a Service Contract Con tact the Novametrix Service Department for contract details Rev 00 Model 7300 Service Manual 41 7
57. the feedback loop Similarly CO2REFIN is conditioned by high pass filter IC16B with a gain of 3 5 and low pass filter IC16A with a gain of 2 The equivalent fixed gains for the two input signals are not equal in order to compensate for differences in the output signal levels of the infra red detectors in the CAPNOSTAT The output from DAC IC 14 corresponding to signal CO2DATAIN is buffered 12 and AC coupled through C49 to IC11A The CO2DATA signal received from the CAPNOSTAT is AC coupled prior to the high pass filter to remove any DC bias by C60 Prior to sampling a CO signal the CO2AZ Auto Zero pulse turns Q1 on causing any residual charge on C49 to discharge to ground At the start of the source pulse the CO2AZ pulse goes Low and the signal from the sensor is acquired The signal 15 buffered by IC11A before appearing at the input of the sample and hold amplifier IC13A Near the end of the source pulse the CO2SSH Sample and Hold goes Low and the peak signal is acquired on the internal sample and hold capacitor CO2SSH returns high at the end of the cycle and the signal on the sample capacitor is held at the peak value The signal then passes through a low pass filter and resistive divider network consisting of R51 R53 and C51 before being converted by the A D Converter IC4 into digital data and analyzed by the processor The signal CO2REF follows an identical zeroing and acquisition path Case and Dete
58. transistor Q1 keeps the chip enable control line of the SRAMs high and in a low power inactive state This forces the SRAMs data bus to a high impedance state isolating the parts from the rest of the system True non volatile storage for system parameters is provided by a serial EEPROM IC8 which has the ability to retain programmed information in the absence of power User Interface Control Circuitry Refer to sheet 3 on 2763 03 schematic The user interface features a high contrast 320 row by 240 column Electroluminescent Display module Patient and system information is presented in both graphical and textual formats organized into several screen configurations An integrated display controller IC19 works in conjunction with the MC68332 MPU and provides the necessary timing signal generation and housekeeping functions to display the visual information generated by the system Programmable logic device IC2 is designed to condition the logic signals between the MPU and display controller making sure that the critical timing specifications of the two devices met SRAMS 1 18 and 1C22 provide video RAM storage for the display system In addition to buffering the signals for the display interface CPLD IC2 also decodes chip selects for the system input buffers and output latches off of CASCADEL If required IC2 can be reprogrammed in circuit using header J9 A 5 switch silicon keypanel and multifunctional rotary encoder provide operato
59. 22 LINEST SYSOUT3 SYSOUT2 2 24 5 SPO2LPON SYSOUT3 92 B26 lt PWRDWN TM RDLEDL CSOFTOT 9 828 65 5 2 IRLEDL DSOFTOT 9 830 LCDENB SRSTL RESET voy SPO2LPON SAMPLE lt eum CNTRLO1 E SPV 20 TER 2 TS C120 en VBACK C122 123 18 125 Tant z EE 10u 10u 35V C126 2522 Tant 127 pue asv 35 1 E Quid ay lt SPO2VLED InterBd 1 43 74HC138 Ein p DBADCL E AIADCL B gt ABADCL ou FLOWADCL gt gt SPO2RDADCL SPO2IRADCL E VDD 1 47 7500 EX abeecs 46 74HC138 Saag DBDACL des CO2DACL i TRIMDACL IC45E oH gt gt CALEECS 45 O10 OBEECS 74 14 FLOWCAL FLOWCLK 2 FLOWDACL 4 VVDO TRIMDACL DISPVA REGN B VALVE1 9 RESET 178 CVDD p C114 V 0 010 115 C116 SAMPLE 74HC573 10 0 01u C117 10u Bee ee Tant 35V Tant Tant 20 35V SPO2PROB SPO2FEDC 42 __ _________ _ ___ _ ___ D 74 573 Nos V SYSUP SPORTAL DHARDOTL CO2AZ lt SYSOUTS CO2DACL C119 VDD 0 01 121 OCDRVO 0 047 RSAMPL OCDRV1 OCDRV2 AS
60. 232 R244 RB4 R125 R130 R141 R144 RESISTOR 150k OHM 1 16W 1 R166 R197 8211 R212 R48 108 R155 R161 R174 R54 R69 R179 R1B5 R193 RESISTOR 1 OHM 1 16W 1 R198 R208 R20 R237 R239 R243 RESISTOR 15k OHM 1 16W 1 R62 R75 RII R124 RESISTOR 7 5k OHM 1 16W 1 R57 R61 R74 E 474310 474316 475042 475051 481546 481547 481548 484061 540 484542 484543 484545 485532 543 DESCRIPTION REF DES RESISTOR PACK 10k OHM 1W 2 B PIN DIP RESISTOR PACK 100k OHM 5 16 PIN DIP POTENTIOMETER 50k OHM 10 TOP ADJ POTENTIOMETER 10k OHM 10 ADJ VR1 VR4 DIODE HOT CARRIER SCHOTTKY DIODE RECTIFIER D12 014 032 D35 037 04 011 013 015 019 024 DIODE DUAL SWITCHING 026 051 033 D34 036 DIODE DUAL SCHOTTKY COMMON CATHODE 016 018 TRANSISTOR PNP SOT 23 TRANSISTOR NPN 507 23 98 910 VOLTAGE REGULATOR POSITIVE ADJ 50 8 145 VOLTAGE REGULATOR 5V OUT 5 5 VOLTAGE REGULATOR 45V OUT 5X 50 8 VOLTAGE REGULATOR 12V OUT 5X SOP 8 VOLTAGE REGULATOR 12V OUT 5X IC49 ICSO TRANSISTOR N CHANNEL ENHAN MODE TRANSISTOR DUAL P CHANMEL ENHAN MODE TRANSISTOR MOSFET N CHAN amp 091 95 94 95 96 9 5 542 DENOTES THRU HOLE COMPONENTS 2 1 PN 2 C smm mw sm esse BUFFER INE
61. 5 C41 C45 C94 R180 IC DUAL OPEN DRAIN FET DRIVER NON INV CAPACITOR 22pF 50VDC 5 C58 1040 R31 R33 R43 R48 86 R109 RESISTOR 100 OHM 1 16W 1 CAPACITOR OtuF SOVDC 10 474227 RESISTOR ik OHM 1 16W 1 03 05 06 08 09 012 014 TRANSISTOR N CHANNEL MODE 915 018 620 027 rere Q4 Q7 Q19 Q25 1584106 474228 RESISTOR 1 21k OHM 1 16W 17 CC IC DUAL OPEN DRAIN FET DRIVER INVERTING 154108 CAPACITOR 100pF SOVDC 5 C39 C44 474229 RESISTOR 2 05k OHM 1 16W 1 R106 R107 R121 R159 R161 485541 IC OPTOCOUPLER DUAL LOGIC GATE 8 PIN 154110 CAPACITOR 3 3nF SOVDC 5 C104 TRANSISTOR MOSFET DUAL ENHAN TRANSISTOR MOSFET amp TRANSISTOR ENHAN MODE 487145 487146 21 23 26 16 1 17 474230 RESISTOR 3 32k OHM 1 16W 1 Cr 485543 OPTOCOUPLER 4 CHANNEL 16 PIN 154111 CAPACITOR 1uF 16VDC 5 C7 CB C11 C12 474231 RESISTOR 4 99k OHM 1 16W 1 R188 R189 485 C57 C61 C55 C65 C70 C73 CAPACITOR 047uF 16VDC 10 2 2 oer m 00 RET 474233 154116 CAPACITOR 35V 10 154118 CAPACITOR 33pF 50V 5X 180019 INDUCTOR 100uH 10 180022 INDUCTOR tOuH 10 17 113 115 5 R3 R14 R17 R19 R22 29 R34 R35 R36
62. 52 TRIX MEDICAL SYSTEMS INC MRL ENGR DATE TE DIGITAL BOARD ASSY 2 9 99 MODEL 7300 NICO DATE 2 9 99 PROJ ENGR DATE D 2763 01101 UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE INCHES mm TOLERANCES 01 254 amp 005 127 0025 064 USED 0921801 7 6 4 3 2 1 NOVAMETRIX DIGITAL BOARD 276302XX Mode in U S A 579 2 a 0 ns NEL lof Ca Eas aug DoD o C34 R14 ies 23 15 21 22 R16 TP4 C37 2 R37 EZ pj w B C47 R47 Ines R3 c5 s la um R24 R67 R24 212 220 cH aie C 852 R56 R54 This document contains information which is proprietary and the property of Medical Systems inc ond moy not be reproduced used or disclosed in whole or in part without the written consent of Novametrix Medical Systems Inc ae RR Se f DINENSIONS ARE IN me Fl E b METRIX 01 amp nr NES sur non mE e id 2 pe 238 MODEL 2300 pes FRAC 1 6 amp ENGR sve 2 9 99 5 DRAWING NO x 01 25Apr99 DRR 2 8 el 2763 01 01
63. 7B Since the TPU generated PWM signal is based on the system clock it is synchronized with the generation of the source pulse timing This minimizes the effect of any random disturbance caused by the heater circuit on the detection of the Data and Reference signals Saturation LED Power Generation and LED Drive Refer to sheet 2 on 2764 03 schematic Adjustable voltage regulator IC11 is configured as a constant current supply for the Red and InfraRed IR saturation sensor LEDs R50 limits the current to Vref R 1 25V 26 7 ohms or 50mA while Zener diode D9 sets the maximum output voltage at 7 5 Volts Capacitors C36 and C37 provide a reservoir for providing the instantaneous current demanded when the LEDs are turned on Transistor Q11 allows shutting down the power to the sensor LEDs by the microprocessor Connector J4 on the NICO 2765 01 Analog Board connects the saturation sensor to the monitor Both of the saturation sensor LEDs are controlled by an amplifier configured as a constant current driver The voltage control for the constant current drive SPO2VLED comes from DAC 1220 on the NICO Digital Board 2763 01 The cathode of the Red LED channel is tied to the driver consisting of amplifier 1C12A MOSFET 010 and resistor R57 Since the amplifier is connected as a non inverting amplifier the voltage appearing at the positive terminal will also appear at the negative terminal and across R57 This voltage nominally 0 74V creates a cur
64. ACITOR 10uF 25V 10 C72 C89 C172 2173 CAPACITOR 4 7uF 10VDC 20 C51 C63 C75 C79 C102 115 CAPACITOR OtuF SOVDC 10 C5 C2 C4 C6 7 12 14 19 C20 C22 C23 C35 C39 C40 45 47 C50 C52 C53 C56 C57 C64 C65 C74 CB4 5 88 93 95 C97 C98 C100 C105 C106 C107 C110 C114 C117 C118 C122 C124 C132 C134 C138 C141 C144 C149 C151 C155 157 160 C165 C156 C168 C169 C174 C178 C179 C186 C187 C191 154105 CAPACITOR 47 SOVDC 5X Gig oom EIU OH CAPACITOR 100pF 50 0 5 C44 C54 154106 CAPACITOR 22 SOVDC 5 C112 C115 C128 C129 C49 C60 C61 C68 C81 C145 CAPACITOR 1 16VDC 5 C147 C152 154112 CAPACITOR 047uF 16VDC 10 154159 CAPACITOR 047uF 35V 10 150038 INDUCTOR CAP 4700 50 0 2A 3 TERMINAL FERRITE FILTER 4 LINE EMI SUPPRESSION 2 180035 FERRITE FILTER UNE SUPPRESSION TUBING 062 ID X 125 00 006 CLEAR SOLVENT 50 CYCLOHEXANONE amp 50 THF 11 21 24 25 27 2 C34 C37 C43 73 76 78 C82 CB3 C91 C101 C104 C108 C109 C114 C115 C121 C125 C126 C130 C131 C135 C137 C139 C146 C152 C154 C156 C161 C163 C175 C176 C181 C190 154116 CAPACITOR 10 35V 10 C10 C15 C17 C31 C183 154137 CAPACITOR 0047uF
65. AMPL OCDRV3 SPO2RDADCI SPO2IRADCL DO SPO2CLK ABADCL 6 SRSTL SPO2IDRV 00K CSOFTOT DSOFTOT CNTRLIN1 QOUT gt VDD G1 P SYSIN2L os i8 apr 0 01u D43 BAT54 CO2ZEROL 5500 5501 CALEECS ABEECS n DETHTR DB CNTRLIN1 DETRTR Anc CASEHTR 00 10 1 4 as Hil PWRLATCH 17 ade N54 31 REI Aa ae 58 A 1 450 74 14 SSCLK CASEHTR CO2SRC CO2SRC S7 OCDRV1 OCDRV2 OCRDO OCDRV3 Novametrix Medical Systems Inc 5 Technology Drive RHD Checked MAL Wallingford CT USA 21 38 06492 MJC Approved RHD Decument Number 610 2764 03 01 sees File Power 2764 Sheet 6 Rev R No _ Date Dale Wednesday June 02 1999 0 6 DISREGARD TPS MARKING TM wa Ea R27 R1 R40 4898 E E SE E ea JHA ess Re Re ea 15812180 43 3 647 CARA BOB sBBBEE L Jg zs 8 087 CTS 25 E css TP18 C46 TP12 5 TP22 14 TP23 Ej 5 C53 _
66. CK and Interrupts 09 amp IRQ or Discrete Table 1 CPU Port Functions The operating frequency of the system clock in the N CO system is 24 117 MHz It is generated by an internal VCO Voltage Controlled Oscillator derived from Y1 a 32 68KHz watch crystal and is software programmable The Timing Processor Unit TPU co processor of the MC68332 provides complex timing functions generated from the system clock This feature is utilized to control the precise timing required for the acquisition of the End Tidal Carbon Dioxide and saturation 5 02 signals The TPU is also used to generate the PWM Pulse Width Modulation control for the Capnostat Case and Detector heaters and to provide the frequency generation for the audio tones See Tables 2 and 3 CO2AZ Auto Zero Clears the Sample Hold circuitry prior to data acquisition Active High 90 us CO2PWENB Pulse Width Enable Defines the active time for both phases of the bipo lar source pulse used for pulse width protection circuitry Active High 810 us SRCDRVO CO2CSHL SRCDRV1 CO2SSH Source Drive 0 Current Sample Hold Source Drive 1 Signal Sample Hold First source drive signal Active High 405 us Enables circuitry for source current measure ment Sample is taken when SRCDRVO is active Low Sample 90 us High Hold Second source drive signal delayed for 10 micro seconds after SRCDRVO ends Active High 395 us Enables ci
67. CO 83 CO Measurement Frequency Rebreathing cardiac output measurement made every three minutes rebreathing period is 50 seconds Cardiac Output Range 0 19 9 liters minute Cardiac Output Resolution 0 1 liters minute Pulmonary Capillary Blood Flow PCBF Range 0 19 9 L min Resolution 0 1 L min Cardiac Index Range 0 9 9 L min meter Resolution 0 1 L min meter Stroke Volume Range 0 250 ml Resolution 1 ml Rebreathing Valve sensor Valve type dual diaphragm pneumatically controlled Return spring automatically returns valve to normal position e Resistance 3cmH5O L min maximum e Rebreathed volume normal position 35ml rebreathing position 150 450ml large e CQ flow sensor integrated into valve assembly Parameter limits for NICO measurements e gt 20 ml min RR gt 3 60 e Vt gt 200 e gt 15 70 mmHg Principle of Operation Non Dispersive Infrared absorption dual wavelength ratiometric single beam optics mainstream sensor Response Time Less than 60 ms Gas composition effects Operator selectable CO Sensor Weight Less than 18 g without cable Sensor Size 1 3 x 1 67 x 85 inches 3 3 x 4 2 x 2 2 cm 8 foot cable 2 44 Construction Durable high performance plastic ultra flexible cable Shock Resistant Sensor will withstand a 6 foot drop to a tile floor Model 7300 Service Manual 51 8 Specifications Flow Sensor End Tid
68. DRIVER RECEIVER 486320 IC HEX SCHMITT FRIGGER INVERTER 15 IC45 486321 J LINE TO DECODER 43 46 485323 IC OCTAL D TYPE LATCH WITH 3 5 OUTPUT 241 42 485325 QUAD 2 INPUT SCHMITT TRIGGER 486326 IC DUAL D FUP FLOP 486340 IC 12 A TO D CONVERTER 486346 2 CMOS 5 PIN 225 147 486363 IC QUAD UNIVERSAL ASYNCH RECEIVER amp 14 486364 8 BIT A TO D CONVERTER 14 PIN 486369 5V 5232 4 DRIVER 4 RECEIVER 24 PIN 486481 IC QUAD 8 D TO A CONVERTER 14 PIN 486781 JFET INPUT OP AMP LOW NOISE 486785 IC QUAD VOLT COMPARATOR ULTRA LOW PWR 635 VOLTAGE REGULATOR 1 2 37 OUT 8 1 11 486790 IC DUAL OP AMPLIFIER HIGH SPEED LOW PWR 28 VOLTAGE REGULATOR 5 OUT 5 5 8 IC38 485796 IC DUAL OP AMP RAIL TO RAIL 8 PIN VOLTAGE REGULATOR POSITIVE 3 PIN 27 486805 DUAL VOLTAGE COMPARATOR LOW POWER 010 011 D24 028 032 01 02 04 034 036 043 025 027 029 030 06 08 021 026 055 035 037 040 042 05 07 012 020 GROUND WIRE ASSY EA ese 730028 CRYSTAL 2097 6 vv 152085 CAPACITOR 1500uF 16V ELECTROLYTIC C76 C98 v 471400 RESISTOR 100M OHM 1W 5X 9 PITCH CAPACITOR 220uF 35V 20X ELECTROLYTIC C96 C99 C101 C102 C106 CAPACITOR 47uF 50V 200 SPACING 474172 RESISTOR 10 OHM 1 BW 1
69. E2022 C63 C186 C60 TLE2022 0 01u 10128 014 867 0 01u 0 1u Rea TP24 NPO TLE2022 BAT54 1000p 1K Poly 100K c65 2 VW Nc VA 00852 70 R71 R72 R73 49 9 49 9 We c wc 10K 2498 7 i 0 01 Nc AVCCNZ NPO 015 R74 A75 D7000 K A76 TP26 15 O2REFIN IC16B C69 TLE2022 NENNT SOCII C187 C68 TLE2022 0 01u SCHEMATIC ANALOG Novametrix 0 01u 0 tu 77 1 4 7300 NICO 22 2 Poly 100K s pee S Dive Q VA 0 01u Nc BERE RHD Wallingford CT USA Z VA VA 21Jan98 54 Dm CO2AZ _ 100 24 B 2765 03 R749 100 00 Prod Release File Analog 2765 Sheet 2 Bee pae 2 5 8235 10 C R80 DNP FREF1V25 R224 ia P NA 10 29 IC19 B oF LT1236A 5 C83 0 047 IC20A 100 AD822 y FREF2V5 R91 BwardRing 7 70770 7070 0 0700 0 07 Fy 33 4 0 01 24 FREFt V25 20 100 0822 C94 Vt 0 01u R103 7 1K 9 e 8108 249 IC24B 1 26 TLC5620C SSDO C98 SSCLK 0010 FLOWDACL ero FREF2V5 111 39 J NICOTRIM Q FSDO FSDI FVCC FSCLK SRSTL 0 047 0 01u F C118 0 01u R124 15K
70. EDICAL SYSTEMS INC MRL MFG ENGR DATE MAIN ASSEMBLY BN 18reb99 MODEL 7300 NICO ENGR DATE J SANDOR 19 599 SIZE DRAWING NO cook REV 9226 NEXT ASSY 09228 00 SCALE 1 1 1 D PCB GASKET TO MAIN PUMP WITH CONNECT PUMP MOTOR SECURE 2765 BD TO 45 FRAME WITH ADHESIVE SIDE RESERVOIR ASSY ITEM 13 2765 46 MAIN FRAME 4 PL CENTRALLY LOCATED OVER FRAME OPENING ci ASSEMBLE TUBING FROM ANALOG BOARD TO PUMP ASSY BEFORE INSTALLATION V2 V5 4 6 V5 2765 J6 CONNECT TUBING FROM PUMP OUTPUT 2765 6 TO PUMP OUTPUT APPROX AS SHOWN 19 REF CONNECT TUBING FROM RESERVOIR PORT 2765 BOARD TEE TO RESERVOIR PORT APPROX AS SHOWN B MAIN FRAME 2 PL oo VIEW This document contone information which propria sad e property and not of Novametrix Medical Systems A ee NOVAMETRIX ee eee E boni mm fonek MEDICAL SYSTEMS INC orem 254 005 1 MAIN ASSEMBLY L EIU 0 79077 Low sve rese SE DRAWING NO REV LIES D 9226 01 00 REV R CATE 7 6 5 4 3 2 1 SECURE KEYPANEL TO BEZEL 2 PL ALIGN NOTCH IN CONNECTOR BOSS ON BEZEL SECURE CONNECTOR TO BEZEL WITH ADHESIVE ALONG THIS AND
71. HER ins i j inc and not E tec This document contains information which proprietary ond the property of Novametrix Neil Systeme inc end may net peran SCALE 2 1 RI nem MFG ENGR MAIN ASSEMBLY SEE REAR VIEW OF GL101 FOR MODEL 7300 Nico ORIENTAITON OF GROUND LUGS FF SE ak a DRR D 9226 0 REV R 8 7 6 5 4 3 2 1 276302XX 2006060000 ts 160000000 9 s D pon 225 r a TI 2889 E pumu J7 1 x L3 mr EF BATTERY FAN R R62 RE 2 R45 x 50 18 03 4 C52 C end 51 C 17 B a 9569 07 u Novametrix 1999 213 24 E 83 255 5 1 FOR TEST PROCEDURE SEE A2783 04 2 THE FOLLOWING COMPONENTS ARE NOT FITTED C44 J1 J4 J6 9 R31 R32 R57 R59 R92 R93 R106 R107 Y2 This document contains information which is proprielory ond the properly of Novametrix Medical Systems Inc and moy not be reproduced used or disclosed in whole or in port without the written consent of Novornetrix Medical Systerns Inc DRAWN DATE ae ae NOVAMETRIX
72. M 47422 RESISTOR IW fe 180030 INDUCTOR GAP 4700PF 50V 4 _ 27 3 o A a 5 3 2 4 2 3 RESISTOR 100 OHM 1 16W 184079 CAPACITOR IOUF 25v 10 TO 0 9 474227 RESISTOR 1K OHM 1 16W 7 474227 RESISTOR 1K OHM 1 16W 0 1 4 i 0 4 2 00 Model 7300 Service Manual 61 Parts Lists 2765 01 Analog Board Assy 474198 RESISTOR 2 49K OHM 1 16 474198 RESISTOR 2 49K OHM 1 16 474231 RESISTOR 4 99K OHM 1 16 474231 RESISTOR 4 99K OHM 1 16 10 5 2765 01 Analog Board Assy ommy 424 RESISTOR 150K OHM ION 8 152968 cAPACITOR 2200600 49679016 TLE2022CD DUALOPAM IG TLCIMGCOW IBBTA 1 IGINSTRAMELONFOWER Ja uma RESISTOR aK OM ION fe _ POTENTIOMETER SKOHM 1 _ 474285 RESISTOR 1 _ RESSTORIOKOHM 6 47429 RESISTOR 250146 VALVE SOLENOID 5V IC BICIS ums RESISTOR 121KOHM US ooo 496796 ICTLCZHZCD DUALOPAN REFLECTIVE 286785 8 QUAD VOLTAGE 212501 CONNECTOR 20PIN HEADER 1 286324 1c RESIIORTSKOMM 8 _ RESISTORSISKORM UIS i 481647 DIODEBATS HOTCARRER s _ T 62 Model 7300 Service Ma
73. Model 7300 Service Manual Aug 27 1999 Part Number 9226 90 00 Novametrix Medical Systems Inc P O Box 690 5 Technology Drive Wallingford Connecticut U S A 06492 Service Policy Novametrix Medical Systems Inc provides 24 hour a day access to technical support through its Technical Support Department in Wallingford Connecticut and company Service Representatives located throughout the United States Outside the U S primary technical support is handled through our qualified international sales and service distributors Novametrix will provide Warranty Service support within 48 hours of receiving a request for assistance Contact the Technical Support Department by telephone toll free at 800 243 3444 or 203 265 7701 by facsimile at 203 284 0753 or by e mail at techline novametrix com After hours telephone support requests before 8 00 AM and after 5 00 PM Eastern Time will be responded to promptly by the Technical Support on call staff After hours facsimile and e mail requests will be answered the next business day It is suggested that any person calling in for technical support have the equipment available for product identification and preliminary troubleshooting Novametrix reserves the right to repair or replace any product found to be defective during the warranty period Repair may be provided in the form of replacement exchange parts or accessories on site technical repair assistance or complete system exchange
74. OPPOSITE EDGE INSERT CO2 INPUT BD ASSY FROM BOTTOM IN ORIENTATION SHOWN SECURE ROTARY SWITCH TO BEZEL WITH WASHER AND NUT PART OF ITEM 53 SECURE DISPLAY TO BEZEL 4 PL LOCATE DISPLAY OVER GASKET ITEM 11 CONNECT RIBBON CABLE TO DISPLAY ITEM 52 AS SHOWN DISPLAY SHOWN REMOVED FOR CLARITY 1 ee CONNECT ROTARY SWITCH RIBBON CABLE CONNECTOR ITEM 53 TO KEYPANEL ITEM 8 DETAIL B CONNECT RIBBON CABLE LOCATE GASKET IN TO KEYPANEL ITEM 8 BEZEL CHANNEL WHILE LOCATING UNDER TABS INSERT ROTARY SWITCH FROM THIS SIDE AS SHOWN FOLD RIBBON CABLE DOWN BEFORE pann 209000 INSTALLING BEZEL 35559255529 MAIN FRAME document contona ee ees Sale hc ee NOVAMETRIX lt MEDICAL SYSTEMS INC 1 9Feb99 ME MAIN ASSEMBLY _ ren MODEL 7300 NICO reg Yam 0 9226 0100 BL1 12 SECURE FAN ASSY AS SHOWN 2 PL PM101 INSTALL F101 amp 16 SOLDER GND WIRE PART OF NOTE ORIENTATION F102 IN 101 14 101 Q H 2 SEE DETAIL For 4d GL101 CONNECTIONS 4 SPREAD GROUND LUGS APPROX AS SHOWN 14 GL101 USE THICK HEX NUT AND STAR WASHER STAR WAS
75. PERATURE to DETECTOR OVERTEME Verify the voltage is at zero volts and DET T is 50 00 and CASE T remains at 45 00 0 2 oet the TEMPERATURE back to NORMAL Verify DET T stabilizes at 45 00 0 2 within 2 minutes Verify the SRC CUR is between 220 and 260 oet the TB1265 SOURCE CURRENT to HIGH Verify the SRC CUR slowly increases to a value between 340 and 380 and the CASE T and DET T are 42 00 Set the SOURCE CURRENT back to NORMAL Verify SRC CUR is between 220 and 260 and CASE T and DET T slowly rise and stabilize at 45 00 0 20 within two minutes Disconnect the TB1265 from the monitor 6 5 SpO gt Testing 27 Rev 00 Select from the CO2 DIAGNOSTIC SCREEN Model 7300 Service Manual 37 6 Electronic Tests 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Flow Barometric Pressure Rebreathe Valve Testing Connect the current limit test jack to the monitor Verify the LED n the fixture is on Press the switch on the current limit test jack Verify the red LED turns off Remove the current limit test jack Verify the STATUS is 9 Probe Xconnect Set the controls on the TB500B as follows SENSOR TYPE 87XX SIGNAL ATTENUATION 3 SATURATION SETTING 100 POWER ON Connect the TB500B to the monitor oet the saturation switch on the TB500B to 0 Verify the status is 2 Low Signal the saturation switch on the TB500B to 100
76. R216 R217 75K 75K IC46B TLC2272 CN TP56 TP57 am E 58 TP60 P 8197 150 A174 249K VDD VDD 2 OCRDO IC40A R181 1 gt OCRD1 2 OCRD2 IC40C VDD LP339 59 R191 R192 100K 1K gt gt OCRD3 C40D LP339 2 e DISPVA A200 DNP D32 J6 D33 54 07000 5 1 C171 Purge Pump Q7A 220u 514599 35V LM393 y 66 VGND Sy gt gt gt VSPUMP IC46A TLC2272 DO QNIN SCHEMATIC ANALOG BD peers MODEL 7300 NICO Medical Systems inc Deen 5 Technology Driv poe pe ae Wallingford CT USA RENE eas 21Jan98 ___ Vs Approved RHD Document Number Code 0r f neeo Mayas 9 2765 03 O0 Prod Release File Analog 2765 Sheet 5 Rev By Date Dale Wednesday June 02 1999 ot 5 PIN 1 4502 4501 DESCRIPTION DES 2766 02 FAB CO2 INPUT BOARD ps 2766 05 SCHEMATIC 2 INPUT BOARD 212527 CONNECTOR 20 PIN RECEPTACLE J302 600055 RIBBON CABLE ASSY 20 PIN 4 IN L 4501 This document contains information which is proprietary and the property of Novametrix Medical Systems Inc and be reproduced used or disclosed in whole or in part without the written consent of Novametrix Medical Systems
77. R53 R71 R126 R137 R138 R141 R142 R154 R160 R183 NT 474258 R113 R116 R147 R156 474238 RESISTOR R20 R30 R40 R41 R45 R46 R52 R60 R77 R78 4 R87 R101 R104 R108 R110 R122 R124 R128 RI33 R134 R139 R148 R153 R155 R163 FUSE WITH FUSEHOLDER 2A 125V 510 810 FUSE WITH FUSEHOLDER 1 125V SLO BLO FUSE W FUSEHOLDER 1 16A 125V V FUSE WITH FUSEHOLDER 125V SLO BLO F2 F3 F6 F4 F5 RESISTOR 10k OHM 1 16W 1 315087 515088 515094 C22 C80 85 C90 C91 C97 C115 C117 C118 C120 C122 124 127 C135 180030 INDUCTOR CAP 4700pF SOVDC 2A 3 TERMINAL 16 110 112 116 120 474240 RESISTOR 100k OHM 1 16W 1 1 12 180057 INDUCTOR 22uH 20 2 6 474259 RESISTOR ime ma 174260 RESISTOR iom T 74303 DIET nae RESISTOR 267 _____ E 9 474511 RESISTOR 510 OHM 1W 5 16 PIN Co 474312 RESISTOR PACK 1k OHM 1W 5 16 PIN 474316 RESISTOR PACK 100k OHM 1W 5 16 PIN of Novametrix Medical Systems Inc und may This document contains information which is proprielory and the pro 5 be reproduced used or distlosed in whole or in part without the written consent of Novametrix Medical Systems Inc DENOTES THRU HOLE COMPONEN
78. RANSISTOR MOSFET NCHA o 485906 IG DIGITAL POT OKOHM ooo 1844432 CAPACITOR Our svoe fe _ 80828 TUBING ESTERBASEDPOLY Jo _ 760030 TUBING 10 FILTER INLINE 25 MICRON 0 o a e NI N 608022 TEFLON TUBING meone CAPACITOR 00108 svoe e _ 754405 CAPACITOR arem svoe 8 154106 CAPACITOR 22PF svoe fe 64 Model 7300 Service Manual Rev 00 2766 01 Parts Lists 10 tty 180056 FERRIEBERD 474268 RESISTOR OOHM 0603STY RESISTOR 5 7 TRANSISTOR 22 i _ 284061 ____ TRANSISTOR MMBTZZZALI a 485540 TRANSISTOR MOSFET a 485540 TRANSISTOR MOSFET DUAL Je 10 6 2766 01 Input Board Assy 10 7 9392 01 Pump W Rsvr Assy Rev 00 Model 7300 Service Manual 65 Parts Lists 9392 01 Pump W Rsvr Assy This page intentionally blank 66 Model 7300 Service Manual Rev 00 1 1 Drawings Main Assembly Model 7300 NICO 5 sheets Digital Board Assy Model 7300 NICO 3 sheets Schematic Digital Bd Model 7300 NICO 3 sheets Power Board Assy Model 7300 NICO 3 sheets Schematic Power Board Model 7300 NICO 6 sheets Analog Board Assy Model 7300 NICO 4 sheets schematic Analog Board Model 7300 NICO 5 sheets 2766 03 1
79. Red or Infrared that is currently active A sample and hold circuit for each channel made up of IC35 and IC34 transform the pulsed input signal into a constant voltage level for signal conversion The main timing signal generation for saturation signal acquisition is generated by the TPU Amplifier IC38A generates an analog signal SPO2PROB that varies with the saturation probe type SPO2PROB is converted to digital form by ADC 129 on the NICO 2763 01 Digital Board Schematic 24 Model 7300 Service Manual Rev 00 Rev 00 4 Functional Testing The functional Testing verifies overall functional integrity of the monitor and sensor If the Model 7300 does not pass these tests remove from use and contact the Novametrix Service Department for repair replacement assistance Refer to the Accuracy Tests for testing the rear panel connectors This procedure assumes the technician performs each step as indicated leaving the monitor in a known state prior to performing the next step If steps are omitted or performed out of order be sure that the monitor is set to the correct state before continuing 4 1 Equipment Required ov Se x CAPNOSTAT Sensor 9567 00 NICO sensor PN 8951 01 5 Finger Sensor PN 8776 00 500ml Calibration syringe Hans Rudolph Model 5550 or equivalent Model 1298 Gas Calibrator PN 6081 00 Low point calibration gas PN 8364 Adult airway adapter PN 7007 01 Qty 3 4 2 Functional Test
80. SELF APPROX AS SHOWN POWER INPUT 100 120V 200 240V AC 50 60 Hz ANALOG PM101 POWER ENTRY MODULE CONFIGURED FOR 120V AC E2 GRN YEL H F101 1A 250V lt lt L lt F102 1A 250V ae 9419 01 02764 03 250V FAST ACT F1 3 15 ISOLATION 3A F4 JP1 9379 01 400056 51 89420 01 gt 1 2 can VW PUMP W 9392 01 600080 600080 DIGITAL BOARD 02763 03 2 125 V 5 F1 CO2 INPUT BOARD 2766 03 RESERVOIR ANALOG BOARD 02765 03 w w 600079 EL DISPLAY m 482610 m m 600078 KEYPANEL Nia 1 PANEL NOTES 1 FUSES ARE 125V SLO BLO UNLESS OTHERWISE SPECIFIED 3 ud part witho Thon wt m ANENE Systems scone NOVAMETRIX MEDICAL SYSTEMS INC zem THLE ENGR DATE MJC 2 24 96 OVERALL WIRING DIAGRAM TS im 9226 09 00 1 SEE DETAIL ON CONNECT 2764 2 SHEET 2 FOR MAIN GL101 C REF DETAIL FRAME SUBASSY C ON SHEET 5 2763 8 2763 5 UPPER 2763
81. TS cr VT MFG ENGR DATE sos pur 2 17 99 XXXK 0025 064 POWER BOARD ASSY MODEL 7300 NICO 1 54 ENGR DATE 5 Boe NOVAMETRIX ARE IN INCHES mm SATE MEDICAL SYSTEMS INC DERE ee poem TOLERANCES 8 5 4 3 2 1 s DRAWNG No PROJ I SEC TIEN USED ON 09226 01 3 3 UJ SRCDRVO gt R6 10K c gt R14 10K 5 R18 20 5K R21 33 2 R26 150K TP13 CO2PWENB gt 12 54 RESET gt 2 2 gt CO2CSH gt 1 7 47 LT1460 2 5 C18 0 1 VW Tant ah 10V We C1 VSRC 0 01 VSRC C TP1 in PU cy 7 TC4404 10 028 sl Si4539 514539 02 gt 5 IC2A 4405 Q2A R7 R8 R11 14539 514539 10 10 10 2 TC4405 D3 D354 VDD R17 7 TPG R190 11 19 R20 100K 10K TP7 e 6 7 0 1 5 10 Vo R23 R24 Poly CD4066 R25 COZISRC 1 gt 1K C2 9 _ TLE2022 4 4 IC6A R27 IC4A TLO2272 IC6B LM393 1M 1 2272 11 C9 R28 LM393 C8 C10 1000 1K O tu C4 0 39
82. WRDWN IRQG 7PF6 100 IRQ7 PF7 CSBOOT Yoo BEARL R65 100_____ j BERR BG CS1 108 HALTL t HALT BACK CS2 SRAMOEL All K RESET 53 bathing 12 FC1 CS4 UARTCSL Se A 5501 MISO 2 055 2 5 Sunc coe An 5500 7 MOSI 14 19 Ar TORRE gt SSCLK AtT9 CS6 die aa gt er PCS1 Em 5077 PCS1 A21 CS8 i DISPCSL l 52 POEM PCS2 A22 CS9 boi wc c ctr SRAMOEL ASRxD F0818 1SR SIZ4 PE7 80 CNFG2 19 UBRAMWAL SIZO PE6 20 CLKOUT AS iPES 18 ASL R12 TT e VDD 05 4 C55 100 6 8pl 51 00 da AVC IPE2 C12 100 R92 c15 ___ DSL 507 0 L10 uc 22 WRL IPIPEL 0 047u EA R17 22 249K R W EXTAL R18 R107 4 IFETCHL 32 708KHz XTAL Es i EKET F0418 1SR drm 22 FREEZE 7 2 p Ji D2 BR1101 R25 E 499 VDD a s 02 MVDD JP1 LE 2N7002 JP2 JP3 JP4 O CD Q GO lt gt Background Mode D3 DE 09 5 BOOTY DETPWM PWRDWN RESET C10 0
83. Z5 Y2 2 2M 77 C44 DNP 5 ES DNP R47 100 R48 10K 19 03 72907 1 IC21A 2022 R55 10 111 R60 101 LOK VIN vouti E YouT2 SPKR2 E VDD C49 C50 G2 gt 0 01u 0 1 51 C53 862 10 0 01u MC34119 C54 100 Tant 0 01u 25V 19 SED1353F MEMR UDI RDY DTACK _ 002 BHE LDS UD3 ABO UDS FPSHIFT 50 VCS1 VOE 0 01u UDO 109 101 102 LD3 f R103 100 FPLINE MOD LCDENB Display C56 6 57 6 8pf C58 6 8pf P LCDENB SCHEMATIC DIGITAL BD MODEL 7300 NICO Novametrix Medical Systems lnc 5 Technology Drive RHD Checked MRL Wallingford CT USA Mfg Approved RHD Size Document Number Prod Release File Digital 2763 Sheet 3 Orawn a gt 276402 5 E2 gi C Ep e Teee a LJ L J LJ LI LJ LL S aa R171 EJ R170 ES E DESI rg e Be p AM pee B NOTES SEE SHEET 2 FOR 1 FOR TEST PROCEDURE SEE 2764 04 BOTTOM SIDE ASSY 2 COMPONENTS NOT FITTED C69 C110
84. aching the line cord and powering the monitor The Model 7300 can operate from 100 120 50 60Hz or 200 240VAC 50 60Hz SERIAL NUMBER VOLT 138 1234 NOVAMETRIX MEDICAL SYSTEMS INC NZ UWP NOVAMETRIX 2e MEDICAL SYSTEMS INC WALLINGFORD CT U S A CAUTION FEDERAL U S A LAW RESTRICTS THIS DEVICE TO SALE DISTRIBUTION OR gt gor a FUSE 2 Connecticut 06492 USE BY OR ON THE PRACTITIONER Clamp for power CO rd reta n n USER S MANUAL PRIOR TO USE oS D MEDICAL m AT ALL AN 05 eo ANALOG optional _ M Made in U S A IMES TO AVOID DANGEROUS HOCK HAZARD odel 7300 Rev 00 Model 7300 Service Manual 45 Maintenance Mains Voltage Configuration Refer to the following section for fuse replacement 7 8 1 Fuse Replacement CAUTION fuses with same type and rating Verify proper fuse value for mains voltage setting see table below Mains Voltage Fuses Slo Blo 100 120 VAC 1 0 A 250V 515005 200 240 VAC 500mA 250V 515095 1 Check that monitor is OFF 2 rear panel power entry module switch to OFF Remove the line cord from the power entry module if connected 3 Using a flat blade screwdriver pry the fuse access
85. ad 9 1 c HERBE ea 2102 R98 La E ay oma amg E 5 a a 8 7 0000 cak E amp B 1c22 0 X gt B CJ iP C132 Hee sss Saco Beans oO D 035 ees i En 036 20 AGERE 5 _ 2201 1 67 8227 037 Ed C This document conioins information which is Proprietary ond the property of Medica Systems lac and may not be reproduced used or disclosed in whole or in part without the esl consent of Novometrix Medical Systems Inc NOVAMETRIX DATE MEDICAL SYSTEMS INC 18Feb99 DATE 2 1 99 MODEL 7300 Nico FRAC 1 penus 2765 2 18 99 ASSY _p9226 01 SCALE 5 1 LIE 2 1 R240 n257 GIB SECURE SPO2 CONNECTOR BRACKET ASSY TO BD WITH TWO 2 56 1 4 LONG PAN HEAD SCREWS SECURE FLOW CONNECTOR TO BOARD WITH TWO 4 24 X 5 16 LONG HEAD SCREWS RS4 10 Lus
86. al Range 0 150 mmHg 0 20 kPa or Accuracy 2 mmHg for 0 40 mmHg 5 of reading for 41 70 mmHg 8 of reading for 71 150 mmHg Respiratory Rate Range 1 150 breaths min Accuracy 1 breath min 8 4 Flow Sensor 8 5 5 0 Flow Range 2 to 180 L min Barometric Pressure 760 mmHg room air 35 C Flow Accuracy Greater of 3 reading or 5 L min Minute Volume Range 2 to 60 L min Tidal Volume Range 100 to 3000 ml Airway Pressure Range 120 to 120 cmH5O Oxygen Saturation Range 0 100 Accuracy 2 for 80 100 1 standard deviation unspecified for 0 79 Averaging Time 2 seconds Pulse Rate Range 30 250 beats per minute Accuracy 1 of full scale Averaging Time 8 seconds 8 6 Monitor Specifications 52 Model 7300 Service Manual Classification IEC601 1 Class l internal power source type BF continuous operating mode Operating Environment 50 95 F 10 35 C 0 90 relative humidity non condensing oize Height 6 5 in Width 10 75 in Depth 9 5 in Weight 10 pounds POWER 100 240 VAC 50 60 Hz 40VA Fuse Rating 100 240 VAC 0 5 A 250 V Slo Blo x2 200 240 VAC T 250 mA 250 V x2 Battery Internal Sealed lead acid gel cell 45 minute life on full charge on screen life indicator 12 hours recharge time Display 4 625 x 3 5 inch EL 320x240 pixels Electromagnetic Emissions Conforms to EMC Directive 89 336 EEC CISPR Class A Tested
87. alogi VS SUNG 40 ec 40 41 Cg 41 Maintenance Schedules 41 Cleaning andssterilizallOl 5 2 9 95 9 9 4 41 41 OpO FInget SesOF 41 42 opOs Y Strip Tapes Foam Wraps 42 c 42 NICO SENSOLS vies cu 42 CAPNOSTAT dnt intime o euge fee eite ulis pde deese 42 eR rcp 43 eic 43 riri led 43 Dc trc 44 Batten ved 44 Replacing the Internal Banery 2 Meier east ces Gia a Voltage 45 cM PEERS 46 software Update InstrucllOlis 3 neta ge C UE 47 19 47
88. brator with low point calibration gas to the NICO sensor via the airway adapter stack see instructions with Model 1298 Gas Calibrator Press and hold the MENU and DATA ENTRY keys simultaneously until the CONFIGURATION MENU appears Select DIAGNOSTIC SCREENS then select Flow gas for thirty seconds Verify the value 1 41 2 Turn the calibration gas off Select EXIT and remove the Model 1298 Gas Calibrator Select 2 5 02 Breathe into the NICO sensor verify both and RR values Stop breathing into the NICO sensor Wait for 20 seconds verify that an alert is generated and NO RESP is displayed where X XX starts at 0 20 and counts up in seconds Press SILENCE to reset any audible alerts Turn the knob until the FLOW PAW screen is displayed Connect the 500 ml calibration syringe to the NICO sensor Pump the syringe back and forth at a rate of 15 cycles per minute Verify a Vti and of 500ml 25 Remove the calibration syringe Press the MENU button Select SET ALERTS Verify the SET ALERTS screen is displayed Select the low pulse bpm alert Verify the ENTER LOW PULSE LIMIT screen is displayed Record the current value of the low pulse limit Follow the screen instructions and set the low pulse limit to 99 Verify that the bell icon next to the limit is active does not have a line through it If not select it to enable audible alerts Select the AUDIO Follow the screen instructions and sc
89. ct pins 2 and 3 together on the RS232 2 connector Select SERIAL 2 verify TESTING Ch2 appears followed by PASS Ch2 Connect pins 2 and 3 together on the RS232 3 connector Select SERIAL 3 verify TESTING Ch3 appears followed by PASS Ch3 Select EXIT to leave the DIAGNOSTIC SCREENS Set switches 2 and 3 on 51 on the 2763 01 board to the OFF position Verify the red LED D2 stops flashing Turn the monitor OFF Reconnect the battery ensure proper polarity hookup 6 8 Safety Testing 80 81 82 Assemble the unit completely Ensure there is no loose hardware inside Measure the monitor leakage current as follows Verify a leakage current less than 250 Monitor grounded Monitor ungrounded Monitor ungrounded with polarity reversed Measure the monitor AC leakage from the shorted saturation test jack to the hot side of the AC line Verify a leakage current less than 25uA 40 Model 7300 Service Manual Rev 00 Maintenance 7 1 General This section presents information on general maintenance such as battery and fuse replacement disassembly and assembly instructions and system software updates for the Model 7300 7 2 Maintenance Schedules The electronic circuits within the Novametrix Model 7300 monitor do not require scheduled calibration or service However in order to maximize battery life the monitor s internal battery should be tested monthly 7 3 Cleaning and Sterilization Follow
90. ctor Heater Regulation Refer to sheet 2 on 2765 03 schematic For the purpose of describing the regulation loop the case heater circuitry will be considered The detector and case heater circuitry are identical Inside the CAPNOSTAT a sensing thermistor is thermally connected to the heater module Initially the CAPNOSTAT is at ambient temperature and the resistance of the thermistor is large A small current flows through the signal path CASETHERM and only a small voltage is developed across R47 The microprocessor programs the TPU to allow an initial maximum duty cycle of 7096 to power the PWM heater circuitry This causes the heater control MOSFET on the 2764 01 Power Board to be pulsed on and off with a duty cycle that is under direct control of the program software As the heater warms up the case the thermistor s resistance decreases raising the voltage appearing at the input of the control loop As described below the MPU looks at this output voltage and decreases the duty cycle of the PWM control circuitry gradually reducing the power output into the heater When the desired temperature set point is reached a balance is struck between the energy delivered into the system and the heat flow out of the system The case thermistor is sensed by amplifier IC9B The difference between the signal at the non inverting input and the reference appearing at the inverting terminal generates an error voltage proportional to the sensed temperat
91. des patient airway pressure sensing Patient Airway Adapter Type Sensing Refer to sheet 5 on 2765 03 schematic Given a specific flow sensor type i e Adult the physical characteristics of the sensor will be consistent from one adapter to another However due to the differences in the physical size and geometry of the various flow sensor types each type i e Adult Adult Combo requires different coefficients be used in the calculation of flow Each flow sensor type has a unique 4 bit code associated with it This pattern molded into the connector body can be optically reflective or non reflective and is read by the system A pulse is generated by the CPU that turns on the LED component of a opto coupler mounted directly beneath each pattern segment If the pattern segment associated with that opto coupler is reflective the LED s light will cause its photodetector mate to be turned on which generates a signal that is sensed by the system and relayed back to the CPU If the segment is non reflective no signal is returned to the sensing circuitry Model 7300 Service Manual 23 3 Theory of Operation Analog Board 2765 01 A four bit code can generate 16 unique pattern combinations One code condition all zeros no reflection is reserved for detecting when the sensor unplugged The circuitry to decode the flow sensor type consists chiefly of connector J5 and comparator 40 3 4 8 NICO Sensor Rebreathing Valve Control Refer to sheets 3
92. door open to expose the fuse housing FUSE HOUSING FUSE ACCESS DOOR 46 Model 7300 Service Manual Rev 00 Software Update Instructions Maintenance 4 Pry the fuse housing out from the power entry module FUSE HOUSING 5 Replace the blown fuse s with the proper type and rating 6 Re install the fuse housing When positioning the housing into the power entry module ensure that it is oriented correctly Press the fuse housing back into the power entry module 7 Close the fuse access door 7 9 Software Update Instructions The following procedure is for updating the monitor s software from the supplied N CO software Update Kit using an IBM compatible computer 7 9 1 Equipment Required 1 IBM compatible computer with an unused serial port COM1 or COM2 2 DB 9 male to DB 9 female serial communications cable Cat No 600073 3 Update diskette PN 9571 07 XX XX new firmware version 4 Reply card 7 9 2 Setup 1 Connect the serial cable to the rear panel 9 pin connector marked 1 on the N CO see FIG A Rev 00 Model 7300 Service Manual 47 Maintenance Software Update Instructions 2 Connect the other end of the cable to the computer s COM serial port see FIG A The update software allows use of either COM1 or 2 the program will request which COM port to use before updating the software
93. e 20 bit sigma delta A D Converter 1225 sheet on schematic during this zero flow condition and using this value to set the software The patient airway pressure transducer is zeroed by adjusting the output of the DAC 26 10 sheet 3 on schematic until the Airway Pressure signal into the ADC IC4 reads mid scale The barometric ambient pressure as sensed by IC28 sheet 3 on schematic is recorded after the airway pressure zero is completed IC30 acts to filter the signals from the barometric pressure and airway pressure channels After the result from each channel is stored in SRAM to be used as an offset in the flow and pressure calculations valves V1 V2 V3 V4 and V6 are then de energized reconnecting the pressure transducers with the patient airway If patient line purging is enabled by the software the system turns on the pump by bringing the PURGE line high after the zero values are recorded A slight pressure is allowed to build in the pump tubing line that will aid in flushing out the patient airway tubing To purge patient line 1 the CPU brings the VALVE1 and VALVE4 signals high energizing Valves V1 and V1 connects the pump with P1 patient line flushing out the patient P1 line while V4 shunts across the differential pressure transducer preventing a differential pressure from appearing across the transducer During purging the system is able to monitor the pressure that is present in the selected patie
94. e battery as quickly and efficiently as possible a two step charging process is employed Assuming the battery is in a depleted charge state feedback to the low drop out linear regulator IC39 sets the voltage output at a fast charge level of approximately 14 VDC Sensing the voltage drop across R144 comparator IC40A monitors the current draw of the battery limiting it to approximately 250mA for a maximum charge rate of C 10 If the battery tries to draw current in excess of the amount allowed IC40A turns off the regulator thus limiting the charging current As the battery reaches a fully charged state and the current draw decreases to approximately 12408 turns transistor 927 off which causes the regulator to change its output to a float charge voltage of approximately 13 2 VDC which maintains the battery in a constant state of readiness lf AC power is lost or is not available the monitor automatically operates from its internal battery without interruption The AC ON indicator is extinguished and a BATTERY ICON appears on the display indicating the current power level of the battery While on internal DC power the current state of the battery is monitored by both software and hardware 1 29 28 and IC35A Should the battery power level get critically low the monitor software which monitors the VBATTADC signal into A D Converter IC9 sheet 2 on schematic alerts the user If the monitor is not placed on AC MAINS power withi
95. e monitor and turn off Model 7300 Service Manual 27 4 Functional Testing Functional Test This page intentionally blank 28 Model 7300 Service Manual Rev 00 Rev 00 5 Accuracy Tests The Accuracy Tests verifies the performance accuracy of the Model 7300 This test is typically performed in conjunction with after the Functional Tests If the monitor does not pass the Accuracy Tests remove from use and contact the Novametrix Service Department for repair replacement assistance This procedure assumes the technician performs each step as indicated leaving the monitor in a known state prior to performing the next step If steps are omitted or performed out of order be sure that the monitor is set to the correct state before continuing 5 1 Equipment Required 1 Leak test adapter PN 9695 48 2 Calibrated barometer 3 4 Model 1298 Gas Calibrator Catalog No 6081 00 Capnostat Sensor PN 9567 00 Low point calibration gas Catalog No 8364 Adult airway adapter PN 7007 01 Qty 3 TB500B Saturation simulator PN 5530 00 This is the same device used by the factory technicians to calibrate the monitor prior to shipping The TB500B is an updated version of the TB500A Test Box The TB500A used in conjunction with adapter cable Cat No 5453 00 may be substituted for the TB500B in most parts of this test opO Finger Sensor 8776 00 7 NICO sensor PN 8951 01 500ml Calibration syringe Hans R
96. ed EMI and reduce susceptibility from high frequency external sources of interference Stable reference voltages for the sensors and analog circuitry are derived from IC1 a precision 2 5V reference with low drift Five Volt and 2 5 Volt references for the and Saturation circuits are generated by IC2 Positive and negative supply rails for the analog circuitry are derived from linear regulators IC6 IC7 and IC50 while regulators IC3 and IC49 and provide regulated voltage supplies for the CAPNOSTAT itself 3 4 2 CO Input Signal Path Refer to sheet 2 on 2765 03 schematic The signals from the sensor CO2DATAIN Data and CO2REFIN Reference Signal have similar signal paths The CO2DATAIN passes through a high pass filter with a gain of 7 65 consisting of C60 R68 and buffer amplifier IC15B The signal is fed to a Butterworth low pass filter IC15A and associated components This filter has a gain of 2 with a corner frequency of 1 5 kHz The output from the low pass filter is fed to a 12 bit Digital to Analog converter IC14 The signal CO2DFB comes into the feedback pin of the DAC which acts as a programmable gain stage Here under 20 Model 7300 Service Manual Rev 00 Analog Board 2765 01 Rev 00 3 4 3 Theory of Operation 3 processor control the signal s gain is adjusted to an acceptable level for conversion The gain setting is adjusted using the digitized signal out of A D Converter IC4 sheet 1 on schematic as part of
97. edical Systems Inc DRAWN DATE NOVAMETRIX CHECK DATE MEDICAL SYSTEMS INC ENGR DATE 9 99 TITLE MAIN ASSEMBLY BN 1BFeb99 MODEL 7300 NICO ENGR OATE J 1970599 DRAWING NO CODE REV 9226 1 N N CAI gt 8 7 6 5 4 ALIGN PCB SUBASSY GROOVES IN MAIN FRAME CONNECT RIBBON CABLE FROM 2764 7 2765 41 DETAIL D FOR PCB SUBASSY 4 1 2 IN 52 AS SHOWN CONNECT RIBBON CABLE FROM 2764 49 2765 05 1 2 IN CENTRALLY LOCATE OVER FRONT BATTERY RIB ITEM 3 REF SECURE 2763 BOARD TO 46 STANDOFFS 2 PL 36 2 PL 2763 45 2764 48 2763 3 v 2763 42 PS 1101 2764 47 2764 49 E EE m SEE DETAIL FOR mW STANDOFF ORIENTATION a i SECURE PCB SUBASSY TO MAIN FRAME 2 PL DC POWER CABLE ASSY 15 MAIN FRAME WITH CABLE TIE DETAIL A SECURE 51 FRAME 2 PL 37 REF E SHEET 3 2764 BD THIS END DETAIL G SCALE 5 1 This document contains information which is proprietary and the property of Novametrix Medical Systems Inc and may not used or disclosed in whole or in part without the written consent of Novametrix Medical Systems Inc DRAWN 1 31068 NOVAMETRIX CHECK M
98. ensor and can be used in place of the CAPNOSTAT Sensor for monitor test purposes The 81265 will verify the functionality of the monitor s front end circuitry Certain error conditions can be simulated to verify responses from the monitor under test The TB1265 is an optional test device and is not mandatory for testing the Model 7300 purpose is to increase test efficiency by simulating a working CAPNOSTAT The TB1265 Sensor Simulator is available from Novametrix Service Department TB1265 Adapter cable PN 5776 48 3 Current limit test jack PN 5693 48 puo wb oen e TB500B Saturation simulator PN 5530 00 This is the same device used by the factory technicians to calibrate the monitor prior to shipping The TB500B is an updated version of the TB500A Test Box The TB500A used in conjunction with adapter cable Cat No 5453 00 may be substituted for the TB500B in most parts of this test Optical encoder 5 test jack PN 9635 48 Optical encoder A test jack PN 9635 14 Pressure source Penwalt pneumatic calibrator model 65 120 or equivalent Common mode test jack PN 9638 48 Model 7300 Service Manual 33 6 Electronic Tests Power Supply 9 Differential test jack PN 9636 48 10 Plug test fixture PN 9645 48 11 Shorted saturation test jack PN 6573 48 12 Oscilloscope 13 30 ohm 10 resistor 14 100 ohm 2 resistor 15 Digital Volt Meter DVM 16 Leakage Tester 6 2 Power Supply I
99. essure from the calibrated barometer 38 Model 7300 Service Manual Rev 00 Flow Barometric Pressure and Rebreathe Valve Testing Electronic Tests 6 Rev 00 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 Adjust VR3 on 2765 board if necessary until the TOT PRESS equals current barometric pressure Select ZERO Verify the BARO PRESS equals the value from the previous step Readjust if necessary Connect the differential test fixture to the monitor oet the pneumatic calibrator for an output pressure of 20 cmH5O Connect the pneumatic calibrator output to the left port of the differential test fixture Adjust VR1 on the 2765 board for a 20b ADC value of 412160 counts 1280 counts Switch the pneumatic calibrator from the left port to the right port on the differential test fixture Verify a 20b ADC value of 412160 counts 12800 Disconnect the differential test fixture oet the pneumatic calibrator for an output pressure of 80 cmH5O Connect the common mode test fixture Connect the pneumatic calibrator output to the common mode test fixture Adjust VR2 on the 2765 board for PAW of 80 00 2 0 1 cmH5O Remove the filter and tubing from V5 on the 2765 board Replace with the plug test fixture filter and tubing from V5 oe PUMP OUTPUT CONNECTOR oet the pneumatic calibrator for output pressure of 120 gt Connect the
100. g of oxygenation and ventilation The use of pulse oximetry is recommended during NICO monitoring e Setting and SpO alert limits is recommended 2 Model 7300 Service Manual Rev 00 Notes Safety 1 A NO RESPIRATION alert is not generated when both the CAPNOSTAT sensor and the NICO sensor are disconnected from the NICO monitor Be certain that the monitor is not in Demo Mode while monitoring Demo Mode can be identified by the flashing DEMO MODE label in the General Message area of the display To exit Demo Mode and return to normal monitoring mode turn the power off and back on The NICO monitor contains no user serviceable parts Refer servicing to qualified service personnel Do not attach an SpO sensor distal to a blood pressure cuff Valid data cannot be processed when the cuff is inflated Attach the sensor to the limb opposite to the site used for the blood pressure cuff This product and its accessories which have patient contact are free of latex he NICO monitor is Year 2000 compliant Data Validity Inaccurate 5 and Pulse Rate values may be caused by Incorrect application or use of a sensor oignificant levels of dysfunctional hemoglobin carboxyhemoglobin or methemoglobin oignificant levels of indocyanine green methylene blue or other intravascular dyes Exposure to excessive illumination such as surgical lamps especially ones with a xenon light source o
101. hich tory ond th of Medical Systems Inc and t ocum i ich 13 pr i and may in whole lp part without atten of Novametrix Medical inc E 160030 6 1 2 IN summ md id ae a ee EN A 13 Ponts v1 3I 13 FLOW TOLERANCES ER a DNE 2 CONNECTOR _ ____ o x 1 EIO T ANALOG BOARD ASST 160030 6 1 2 IN PNEUMATIC ASSY SCHEMATIC ma ae mE SIZE DRAMNG No REY SCALE NONE 01 660 28Apr99 DRR yess 2765 av Next assy po226 01 sca vv __ set sor 8 7 6 5 4 3 2 1 g B gt 65 02 02755 03 2765 04 B9024 10 89269 01 09270 16 9272 15 89528 16 27 154072 FLOW CONNECTOR RECEPTACLE 3 PORT SUPPORT TRANSOUCER CAPACITOR 1uF 50v 10 TEST PROCEDURE GOD CONNECTOR Bracket s CAPACITOR 220uF 35V 20 ELECTROLYTIC C164 C167 C170 C171 C180 8 DESCRIPTION REF DES J5 SEAL FLOW CONNECTOR FOR J5 FOR 1229 amp 32 C26 C32 C33 C38 71 C83 C92 C96 C105 C120 C127 C177 C185 9 C13 18 C29 C30 C58 C55 154079 CAP
102. ing facility is certified to both ISO 9001 and EN46001 MDD93 42 EEC Annex 11 Novametrix products bear the CE 0086 mark The product is certified by Underwriter s Laboratories UL to bear the UL mark and tested by T V Rheinland to IEC 601 1 EN60601 1 2 5 Declaration of Conformity with European Union Directive The Authorized Representative for Novametrix equipment is D R M Green European Compliance Services Limited Oakdene House Oak Road Watchfield owindon Wilts SN6 8TD United Kingdom 2 6 Trademarks and Patents CAPNOSTAT Sensor is a registered trademark amp and NICO and the stylized NICO with CO2 shadow NICO Sensor NICO Loop and CObar cardiac output confidence bar SuperBright and Y Sensor are trademarks 1 of Novametrix Medical Systems Inc Other trademarks and registered trademarks are the property of their respective owners NICO and its sensors and accessories are covered by one or more of the following USA patents 4 859 858 4 859 859 4 914 720 5 146 092 5 153 436 5 190 038 5 206 511 5 251 121 5 347 843 5 369 277 5 379 650 5 398 680 5 616 923 5 693 944 5 789 660 Other patents pending 2 7 Manual Revision History 7 99 6 Model 7300 Service Manual Rev 00 Theory of Operation 3 1 Model 7300 Non Invasive Cardiac Output Monitor The NICO model 7300 monitor measures cardiac output based on changes in respiratory concentration cau
103. ing signals that drive the power to the broadband infrared source located in the CAPNOSTAT CO sensor The SRCDRVO and SRCDRV 1 lines are used to control the direction of the current flow through the source On the falling edge of CO2AZ Auto Zero and the rising edge of CO2PWENB Pulse Width Enable the SRCDRVO signal goes High enabling drivers IC1A and IC2B to turn on one half of the MOSFET H Bridge formed by Q1 and Q2 This causes current to flow through P Channel half of MOSFET Q1 through CAPNOSTAT source through the N Channel half of MOSFET Q2 and finally through R23 to the negative supply rail completing the first part of the Source Pulse cycle The duration of SRCDRVO is 405 us microseconds After the SRCDRVO line goes Low there is a 20 us software delay until the SCRDRV1 line goes High enabling drivers IC1B and IC2A to turn on the other half of the MOSFET Bridge formed by the P Channel half of Q2 and the N Channel half of Q1 This drives the current through the source in the opposite direction The 20us software delay between the SRCDRVO and SRCDRV1 signals is to prevent the possibility of both halves of the MOSFET bridge being active at the same time thus creating a low impedance path between the two power supply rails When current flows through the source it will also flow through current sensing resistor R23 creating a differential voltage proportional to the source current This voltage is Model 7300 Service Manual
104. ion Power Supply 2764 Power Supply and Communications flop output toggle its present state A high output causes switching regulator IC34 to be turned on supplying power to the system Flip flop IC32B provides control over the state of the system when the user turns the system Off When the monitor is operated from an AC MAINS power source the green AC ON indicator on the front panel is lit If the monitor is on pressing the power key on the front membrane keypanel will not power the monitor down Instead the monitor is placed in a standby operating mode The display and other non essential control functions are inactivated by the software giving the monitor the appearance of power down While in standby however the core system continues to operate keeping the Capnostat heaters within temperature regulation This reduces the time required to bring the system up to full operating specifications during the following power up cycle While on battery operation depressing the Power Key on the front keypanel will turn off the switching regulator thus powering down the system Stand by mode is disabled and power to the system is turned off The monitor enters a low power mode where only circuitry required for SRAM and real time clock battery back up and Power Key sensing is kept supplied Power for the SRAM and Real time clock VBACK is determined by the state of VDD When VDD is available and transistor Q23 is turned on VDD is supplied through
105. iver Transmitter IC14 is provided for buffered high speed data communication The connection to external non patient contact type devices is electrically isolated from the patient applied sections by optical data couplers IC16 IC17 21 23 26 and isolated winding off of the power supply flyback transformer T1 Transceiver IC13 located on the patient isolated circuit provides signal translation between the system s TTL logic level and the RS 232 level requirements Serial Ports A and C J1 and J3 are configured for a simple 3 wire Transmit Receive and Ground connection while Serial Port B J2 has additional hardware handshaking capabilities Connection to an external device is through a null modem type of interface cable The fourth UART channel is available on internal connector 5 for future product expansion In addition the system is capable of outputting four channels of analog output data through 1222 and receiving four channels of analog input through buffer amplifiers IC18 and A D Converter IC20 on connector Voltage reference IC19 supplies the analog I O circuitry with a stable voltage level Connector J4 allows sensing of external cable connection by shorting pin 15 IOSNSE of the external cable to ground Refer to Tables 5 to 8 for the pinout and signals of interface connectors Serial Channel A Receive Serial Channel A Transmit Isolated Ground Table 5 Serial Channel A 9 pin D subminiature connector l
106. ly until the CONFIGURATION MENU appears Select DIAGNOSTIC SCREENS then select CO2 Flow gas for thirty seconds Verify reading of 41 2 Shut the gas flow off Remove the Model 1298 Gas Calibrator Verify the following displayed parameters SRC CUR 180 300 DET 45 00 0 2 CASE T 45 00 0 2 DATA CHAN 3400 200 REF CHAN 3400 200 5 3 5 0 Testing 14 15 16 17 18 19 20 21 22 23 select from the CO2 DIAGNOSTIC SCREEN Verify the STATUS is 9 Probe Xconnect Set the controls on the TB500B as follows SENSOR TYPE 87XX SIGNAL ATTENUATION 3 SATURATION SETTING 100 POWER ON Connect the TB500B to the monitor oet the saturation switch on the TB500B to 0 Verify the status is 2 Low Signal the saturation switch on the TB500B to 100 Verify the status returns to 0 Turn the TB500B OFF Verify the status line reads 3 Low Light Turn the TB500B ON Verify the status returns to 0 Press and hold the RED open test button on the TB500B Verify the status is 13 IR LED FAIL Release the RED open test button Verify the status returns to 0 30 Model 7300 Service Manual Rev 00 Flow Testing 24 25 26 27 28 29 Accuracy Tests 5 Press and hold the INFRARED open test button on the TB500B Verify the status is 12 Probe Error Release the INFRARED open test button Verify the status returns to 0
107. mishandling tampering with or operation of the equipment without following specific operating instructions will void this guarantee and release Novametrix from any further guarantee obligations Service Department For factory repair service Call toll free 1 800 243 3444 To Call Direct 203 265 7701 Facsimile 203 284 0753 http www novametrix com techline novametrix com Caution Federal U S A law restricts this device to sale distribution or use by or on the order of a licensed medical practitioner Copyright 1999 Novametrix Medical Systems Inc 5 Technology Drive Wallingford Connecticut 06492 All rights reserved IV Model 7300 Service Manual Rev 00 Table of Contents 1 Warnings ceren aren pP T ER 1 uu E aS 2 prece LER 2 8 c ree EN 5 PROOUE TIS EA UIA s PR 5 _ 5 NICO Monitor Technical DESGnipliOn he te soe et diee 6 Manufacturing Quality amp Safety 6 Declaration of Conformity with European Union Directive 6 Trademarks and Patents
108. monitored by IC35B to ensure that a tight voltage range is maintained and not exceeded in the event that the 5 VDC feedback to the switching regulator 34 is lost Linear regulator 1227 provides the logic and analog supply for the patient isolated circuits Power for the CAPNOSTAT heaters and the display are derived off of the main 15 Volt input from the offline switching regulator during connection to an AC MAINS power source During AC operation the signal LINEST is High indicating the presence of AC MAINS IC37 also a switching voltage regulator and its associated circuitry provide these functions with a well regulated 12 VDC supply When the monitor is operating off of the internal battery LINEST is Low disabling the switching regulator and turning on MOSFET Q19A which is controlled by voltage comparator IC35C In this mode the heaters and display are supplied directly with battery power minimizing power losses that occur during the conversion of one voltage level to another The output from comparator IC35C also controls the Reset input to Flip flop IC32B determining whether the monitor is in AC stand by or DC Power Down operating mode Charging the battery takes place as long as the unit is connected into a viable source of AC MAINS power and the power entry module switch is in the On position In order 18 Model 7300 Service Manual Rev 00 Power Supply 2764 Power Supply and Communications Theory of Operation 3 to charge th
109. n approximately ten minutes the software will turn the unit off Should the software fail to turn the monitor off the hardware cutoff controlled by comparator IC35A activates turning the unit off Stable reference voltages for the analog circuitry are derived from IC7 sheet 1 on schematic a precision 2 5V with low drift Five Volt and 2 5 Volt references are generated by IC8 Refer to Table 9 VDCIN 10 15 VDC Main DC input generated from offline switcher or internal battery VBATT 10 12 5 Internal Battery DC input VBACK 2 5VDC or 5VDC Supply for SRAMs either VDD or 2 5V to maintain SRAM data during power down 12V or VBATT Supply for the Capnostat Case and Detector heaters and Fan regulated at 12V when MAINS power available or from VBATT when unit is on battery power DISPVA 12V or VBATT Supply for the EL Display regulated at 12V when MAINS power available or from VBATT when unit is on battery power VDD 5VDC Regulated digital logic supply VVDD 5VDC Regulated and filtered supply for the valves DVDD 5VDC Regulated and filtered logic supply for general analog sub systems ADCVDD 2 14VDC ADC input for monitoring VDD VA 14VDC nominal Loosely regulated off of the 5VDC feedback line CVDD 5VDC Regulated and filtered logic supply for analog sub system Table 9 Power Supply Outputs Rev 00 Model 7300 Service Manual 19 3 Theory of Operation Analog Board 2765 01 VSRC 12VDC Linearly
110. n this procedure the term select refers to highlighting a selection on the screen turning the knob then pressing it in to select the highlighted option 1 Connect the monitor to the AC line Set the rear panel power entry module switch ON Verify the AC LED turns on 2 Press the power switch Verify the display shows the NICO start up routine followed by the main display screen 3 Set switches 2 and 3 on S1 on the 2763 01 board to the ON position Verify the red LED D2 flashes D2 2 ma gt off I i 1 I Header Strip Battery 4 Using a DVM measure the power supply voltage at J6 pin 1 on the 2764 01 board Use TP1 on the 2763 01 board for ground reference Verify 15 00V x 1V 5 Disconnect the connectors battery from the battery terminals Measure the voltage at the positive battery terminal connector Verify 12 6V 500mV 6 Connect the 100 ohm resistor across the battery terminal connectors from J7 Measure the voltage and verify 13 77 500mV Remove the resistor 7 Connect the 30 ohm resistor across the battery terminal connectors from J7 Using an oscilloscope verify pulses present the peak of the pulses should not be higher than 13 77 500mV 34 Model 7300 Service Manual Rev 00 Voltage Checks Electronic Tests 6 8 Disconnect the resistor Position the battery cables from J7 in such a manner so that they do no
111. ndicates a potentially harmful condition that can lead to personal injury Explosion Hazard Do not use the NICO monitor in the presence of flammable anesthetics Use of this instrument in such an environment may present an explosion hazard Electrical Shock Hazard Always turn the NICO monitor off before cleaning it Do not use with a damaged external power source Refer servicing to qualified service personnel Connect the AC Mains power cord to a properly grounded hospital grade outlet The NICO monitor should be connected to the same electrical circuit as other equipment in use on the patient Outlets of the same circuit can be identified by members of the hospital s engineering department Failure of Operation If the monitor fails to respond as described do not use it until the situation has been corrected by qualified personnel Reuse disassembly cleaning disinfecting resterilizing etc of the NICO sensor may compromise the device functionality and system performance and cause a potential patient hazard Performance is not guaranteed if the NCIO sensor is reused Inspect the SpO and NICO sensors prior to use Do not use if they appear to be damaged or broken Do not attempt to rotate the NICO sensor in the breathing circuit by grasping the pneumatic tubes exiting the flow sensor Do not apply excessive tension to any cable or the NICO sensor pneumatic tubing Periodically inspect NICO sensor tubing lines for kinks
112. nt line by reading the AWPRESS signal VALVE1 is brought low and V1 is the de energized once again isolating the pump from the patient airway and allowing a pressure head to build once more The VALVE2 line is then brought high and valve V2 is then energized flushing out the patient P2 line After all lines have been flushed out V1 and V3 are re engerized allowing any residual pressure to be vented to atmosphere All valves are then de engerized and the PURGE signal is brought low turning the pump off The purging process is complete and normal patient monitoring continues A hardware watchdog consisting of IC44A and the surrounding circuitry limits the maximum pump on time preventing overpressure from building in the patient lines 3 4 5 Flow Circuitry Refer to sheet 3 on 2765 03 schematic Differential Pressure Transducer 18 is a silicon based piezoresistive bridge with four active elements When a pressure is applied between transducer ports P1 and P2 a differential output voltage proportional to the applied pressure is produced The full scale output range for the transducer is 0 to 10 inches of water P1 gt P2 By setting the 0 differential pressure no flow point to mid scale during the zeroing process described earlier negative pressure readings 2 gt 1 are also available The transducer is temperature compensated at 25 degrees Celsius and designed to be driven by a constant voltage source 22 Model 7300 Service Ma
113. nual Rev 00 2765 01 Parts Lists 10 PartNo oeseri Quay 47409 RESISTOR 75K OHM 8 486332 IC ADTTOGBR 208 2 474198 ___ RESISTOR 249K OHM e 14108 ____ eAPACITOR WOPRSVOC 2 48481 TLCS30CD QUADBBD ooo 24243 CONNECTOR2PN i 4423 RESISTOR49SOHM fe _ 18446 cAPACIOR JOUF 36V 10 RESISTOR 205K OHM 6 2 _ 211327 CONNECTOR 3PIN HEADER p _ 474205 RESISTOR 499 RESISTORSSHKOHM GW IG ADTI2IR DUALBIFETO ooo 4742258 RESISTOR 2 2 _ ari RESISTOR 249K OHM 8 _ 48 51 I amp PRECISONZSVREF Oooo 48362 IG20BTATODCON 1 _ 47446 100KOHM SW aao RESPACK TW 1 IC 4 INPUT amp OUTPUT OP FAB ANALOG BOARD o 1 __ 2765 02 213414 CONN 40 HDR ELEV Rev 00 Model 7300 Service Manual 63 Parts Lists 2765 01 Analog Board Assy PartNo Description ____________ Quit 84138 CAPACITOR 6 SCREW2SeXWALSEF ooo 284008 _ 48010 NPNTRANSISTOR2NSA o 2 483002 2N3906PNPSIICONSWTCH j 472068 RESISTOR 100K OHM TW 47445 RESISTOR 324K OHM TW aaz RESISTOR 402 HOW aooo 485914 TC ic7a ceaiDwW OCTALBU TT 483019 TRANSISTOR MMBT2007ALTT o 485543 T
114. nual Rev 00 Analog Board 2765 01 Rev 00 3 4 6 3 4 7 Theory of Operation 3 In the normal system operating mode all valves are de engerized and the pump is inactive Transducer ports P1 and P2 are connected to the patient airway As air flows through the airway adapter pneumotach a pressure difference between P1 and P2 15 created This signal is dependent on both the magnitude and the direction of the airflow The greater the flow volume the larger the pressure difference created between the two transducer ports The transducer senses an inspired flow as a positive pressure difference P1 gt P2 while an expiratory flow is seen as a negative pressure 2 gt 1 With a supply voltage of 2 5V the sensor transforms this pressure difference into an electrical signal with a nominal absolute magnitude of 23 mV Full scale Output This signal is conditioned and amplified by 1223 which is a monolithic Instrumentation Amplifier IA A positive pressure difference inspiratory flow creates a signal above the no flow zero baseline obtained during the zeroing process A negative pressure difference expiratory flow is below the set baseline The nominal gain of IC23 is set by fixed resistors R85 R83 and variable resistor VR1 The output for the transducer is adjusted using VR1 and a known pressure input as a calibration reference With an input differential pressure of 20 cmH5O the gain of the amplifier is set to give an ADC count of 412160
115. ocated on the rear panel NC Model 7300 Service Manual 13 3 Theory of Operation Power Supply 2764 Power Supply and Communications Request to Send Channel B Hardware Handshake Output Clear to Send Channel C Hardware Handshake Input ooo pe C 1 Isolated Non Patient Signal Ground Ground ADCINO ADC Input Channel 0 Table 8 Analog Connector 15 pin D subminiature connector located on the rear panel 14 Model 7300 Service Manual Rev 00 Power Supply 2764 Power Supply and Communications Theory of Operation 3 Rev 00 3 3 2 ADCIN1 ADC Input Channel 1 ADCIN2 ADC Input Channel 2 ADCIN3 ADC Input Channel 3 Isolated Non Patient Signal Ground Ground 7 Isolated Non Patient Signal Ground Ground Isolated Non Patient Signal Ground Ground Isolated Non Patient Signal Ground Ground 10 Isolated Non Patient Signal Ground Ground DACOUTO DAC Output Channel 0 Table 8 Analog Connector 15 pin D subminiature connector located on the rear panel Pulser Source Drive The source drive circuitry is designed to drive the source with a bipolar signal to prevent the migration of charges within the source that may result from unidirectional electrical fields The resistance of the source is monitored constantly to ensure the integrity of the system by sampling the current through the source while it is active Refer to sheet 1 on 2764 03 schematic The TPU co processor in the MC68332 generates the tim
116. puter Refer to the com puter s documentation for more information The update software only communicate with the CO through either COMI or 2 48 Model 7300 Service Manual Rev 00 Software Update Instructions Maintenance Rev 00 When the download starts the N CO screen will blank and the following message will appear on the computer screen Validating File then UPDATING FIRMWARE DO NOT INTERRUPT PERCENT DONE xx The xx will count up from 0 through 100 as the update is completed The procedure is complete when the computer displays PROGRAM COMPLETE Fl exit Esc back 7 Press F1 to exit the update program Check that the N CO restarts and returns to normal operation if not then perform the update procedure again or call Novametrix Service Department at 1 800 243 3444 in Connecticut call collect 203 265 7701 Remove the serial communications cable from the PC and the N CO Record the serial number from the N CO on the reply card Fill in the remaining information and return the postage paid card to Novametrix Model 7300 Service Manual 49 Maintenance Software Update Instructions This page intentionally blank 50 Model 7300 Service Manual Rev 00 Rev 00 8 1 Specifications Specifications for the Novametrix NICO Monitor Model 7300 are listed for informational purposes only and are subject to change without notice 8 2 NI
117. r control of screen selection patient data entry and user selectable input The keypanel also contains several LEDs which represent various system conditions such as input power status AC or Battery and alarm state Control of the user interface is generated from the CASCADEL chip select signal along with the appropriate address line state and WRL signals from the microprocessor 10 and IC13 sheet 2 on schematic are input buffers which read in the present state of the keypanel and rotary encoder Depressing a key or activation of the encoder causes the signal line associated to be pulled low in contrast to its normally high state Input buffer IC14 provides a latched output for controlling the front panel LEDs as well as several other latched control outputs To supplement the visual indicators associated with the membrane keypanel and display an audio output signal is generated to provide an additional mode to convey information to the user The TPU processor of the MC68332 TOUT1 and TOUT2 can generate two tone frequencies These signals are fed into separate reference inputs of the Quad 8 bit DAC IC20 providing a means for independently attenuating each signal under CPU control From the DAC the individual signals are summed together by IC21B and filtered by L11 and C50 Audio amplifier IC23 drives the system speaker to produce system audio Inverter IC7F controlled by the SYSUP signal from the MPU disables the audio amplifier until s
118. r direct sunlight Excessive patient movement Venous pulsations Electrosurgical interference Use of an IABP NICO measurements will occur provided the following conditions are met The NICO sensor is properly installed in the patient s breathing circuit Valid flow and CO signals are detected with no significant signal artifact is greater than 20 mL min ETCO is between 15 and 70 mmHg 2 0 9 0 kPa or 96 The tidal volume is greater than 200ml The respiratory rate is between 3 and 60 br min The STOP CONTINUE REBREATHING key is not illuminated NICO is not paused by the monitor for any other reason displayed in the C O message area When a new CAPNOSTAT sensor is attached to the monitor is moved from one monitor to another it must be adapter zeroed before use After the life cycle of the equipment and accessories has been met disposal should be accomplished following national local requirements here is no screen indication during monitoring except on start up or when the SET ALERTS screen is displayed as to when the NICO alert settings are off Rev 00 Model 7300 Service Manual 3 1 Safety Notes This page intentionally blank 4 7300 Service Manual Rev 00 Introduction 2 1 About this manual This document contains information which is proprietary and the property of Novametrix Medical Systems Inc and may not be reproduced stored in a retrieval system
119. rcuitry for and Reference channel data acquisition Low Sample 90 us High Hold CASEPWM Case Heater PWM PWM control for the case heater servo Table 2 Timing Generation for the etCO subsystem 8 Model 7300 Service Manual Rev 00 Digital Board 2763 Rev 00 Theory of Operation 3 DETPWM Detector Heater PWM PWM control for the detector heater servo TOUT1 TOUT2 Variable frequency outputs to generate system audio Table 2 Timing Generation for the subsystem ASAMPL Auto Zero Clears the Sample Hold circuitry prior to data acquisition Active Low RDLEDL Red Channel LED control pulse Defines the active time for the Red LED Active Low IRLEDL Infra Red Channel LED control pulse Defines the active time for the Infra Red LED Active Low RSAMPL Red Channel Sample Hold Enables circuitry for the Red Channel signal mea surement Sample is taken when SRCDRVO is active Low Sample 90 us High Hold ISAMPL Infra Red Channel Sample Hold Enables circuitry for the InfraRed Channel signal measurement Sample is taken when SRCDRVO is active Low Sample 90 us High Hold Table 3 Timing Generation 5 subsystem To help reduce and suppress the radiation of electromagnetic interference ferrite filters L1 L11 have been placed on clock signals with fast rise and fall times Other digital signals including address and data lines are rise time limited b
120. rent through R50 of 225mA 0 74V 3 3 ohms when the RDLED signal is asserted which also flows through the Red LED of the Saturation sensor via Q10 The driver for the IR LED IC12B Q13 and R64 creates a constant current source of 111mA across R64 and is controlled by asserting the IRLED signal The two control signals operate at 33 kHz with a 1096 duty cycle and are staggered so that one LED is on during the middle of the other LED s off time Power Supply and Voltage Reference Generation The monitor operates either on isolated AC Mains power or on the internal 12 Volt Lead Acid Battery To provide isolation from the MAINS lines as well as AC DC voltage conversion the N CO monitor utilizes a Medical Grade universal input off line switching power supply The DC output of this supply is 15 VDC at 40 Watts and is brought to the Power board on connector J6 sheet 5 on schematic The heart of the power supply design for the system is a 100 kHz switching regulator IC34 sheet 4 on schematic which utilizes a flyback transformer configuration to generate the DC supply voltages and provide the required isolation between the primary secondary and isolated power planes Power On Off control is achieved by sensing the state of the power switch located on the front panel A high to low transition on the PWRSW line is debounced by C85 and IC31A and clocked into Flip flop IC32A which causes the Flip Model 7300 Service Manual 17 3 Theory of Operat
121. roll through the audio levels Verify the audio increments with each audio level Set the audio level to 5 EXIT the SET ALERTS screen Turn the knob until the gt screen is displayed Connect the finger sensor to the monitor Verify the SPQ PROBE message is replaced by a PULSE SEARCH message Place the 5 finger sensor on your finger Verify an SpO pulse rate and pleth waveform are present Verify the pulse value is blinking LOW PULSE is displayed and an audio alert is heard Note If your pulse is not below 99 you will not get the error Press the SILENCE button Verify the audio alert is silenced and the SILENCE button is flashing between yellow and red Remove the finger sensor from your finger Verify a PULSE SEARCH message is displayed Follow steps 20 21 and 22 to return the low pulse limit to the previous value 26 Model 7300 Service Manual Rev 00 Functional Test Rev 00 31 32 33 34 35 Functional Testing 4 Press the MENU button select SETUP Verify the SETUP screen is displayed Select SET TIME amp DATE Verify the time and date are correct Exit the SET TIME amp DATE screen then EXIT the SETUP screen the power entry module switch on the rear panel to the OFF position Verify the AC indicator turns off a battery icon is displayed and the monitor continues to operate Set the power entry module switch back ON The test is complete Disconnect the sensors from th
122. s Repairs provided due to product abuse or misuse will be considered non warranty and invoiced at the prevailing service rate Replaced or exchanged materials are expected to be returned to Novametrix within 10 days in order to avoid additional charges Return materials should be cleaned as necessary and sent directly to Novametrix using the return paperwork and shipping label s provided Transferring return materials to a local sales or dealer representatives does not absolve you of your return responsibility Novametrix manufactures equipment that is generally field serviceable When repair parts are provided the recipient can call Technical Support for parts replacement assistance and repair assurance In the event a replacement part requires increased technical capability Technical Support may request Biomedical assistance provide on site technical support or complete replacement equipment If the customer requires the return of their original product the exchange material will be considered loaner material and exchanged again after the customer equipment 15 repaired Novametrix promotes customer participation in warranty repairs should they become necessary A longer useful product life and quicker more cost effective maintenance and repair cycles both during and after the warranty period are benefits of a smooth transition into self maintenance The Technical Support Department can provide technical product support at
123. sed by a brief period of rebreathing The measurement of cardiac output is accomplished by interpreting data collected by proprietary sensors that measure flow airway pressure and concentration and then combining these signals to calculate elimination Using these variables technique known as Fick partial rebreathing is applied to calculate cardiac output NICO can be used with mechanically ventilated patients in the operating room intensive care or emergency departments 3 2 Digital Board 2763 3 2 1 Microprocessor Refer to sheet 1 of the 2763 03 schematic The generation of the logic and control signals for the purpose of acquiring the raw physiological parameters and management of the data needed to produce an accurate Non Invasive Cardiac Output are the responsibilities of microprocessor IC1 This device a Motorola MC68332 is a highly integrated 32 bit microcontroller that combines high performance data manipulation capabilities with powerful peripheral subsystems These subsystems include circuitry for timing generation peripheral chip selection and data control interrupt generation as well as synchronous and asynchronous serial communication Also included is a sophisticated timing co processor the TPU Time Processor Unit that can generate complex timing waveforms independent of the main processor In general the signals for subsystems are functionally grouped into ports which can be independently programmed b
124. splayed Select SET TIME DATE option Follow the instructions and set the correct time and date Exit the SET TIME amp DATE screen then exit the setup screen Model 7300 Service Manual 31 5 Accuracy Tests Time Date Setting This page intentionally blank 32 Model 7300 Service Manual Rev 00 Rev 00 Electronic Tests The Electronic Tests verify the calibration and operation of the electronic circuits within the Model 7300 These tests DO NOT need to be performed on a regular preventative basis Perform these tests only if the monitor fails to operate as expected or fails the Accuracy Tests or the Functional Tests The Electronic Tests should be performed only by qualified service personnel The Electronic Tests require access to the internal components of the monitor Refer to the Maintenance section for disassembly instructions CAUTION The Model 7300 contains static sensitive devices Be sure to follow proper grounding procedures when handling the internal components to avoid damage from static discharge This procedure assumes the technician performs each step as indicated leaving the monitor in a known state prior to performing the next step If steps are omitted or performed out of order be sure that the monitor is set to the correct state before continuing 6 1 Equipment Required 1 1265 Sensor Simulator PN 5776 00 The Novametrix TB1265 Sensor Simulator emulates a functioning CAPNOSTAT s
125. t operate the NICO monitor when it is wet due to spills or condensation Do not operate the product if it appears to have been dropped or damaged Never sterilize or immerse the monitor in liquids Do not sterilize or immerse sensors except as directed in this manual No tension should be applied to any sensor cable or tubing To avoid the effects of excessive moisture in the NICO sensor insert it in the ventilator circuit with the pneumatic tubes upright Excessive moisture in the NICO sensor may affect the accuracy of the measurements Operate the monitor at temperatures between 10 to 40 C 50 to 104 10 95 non condensing Avoid storing monitor temperatures less than 10 or greater than 55 lt 14 or gt 131 F 10 95 non condensing Observe precautions for electrostatic discharge ESD and electromagnetic interference EMI to and from other equipment Where electromagnetic devices i e electrocautery are used patient monitoring may be interrupted due to electromagnetic interference Electromagnetic fields up to 3 V m will not adversely affect system performance Caution Federal U S A law restricts this device to sale distribution or use by or on the order of a licensed medical practitioner 1 3 Notes NOTE A point of particular interest or emphasis intended to provide more efficient or convenient operation In order to ensure proper monitorin
126. t short against anything Voltage Checks 9 Use TP65 on the 2765 board as ground reference for all measurements unless otherwise specified Measure the following power supply voltages using a DVM Supply Name Location 1 VDD IC5 pin 8 2 VVDD IC46 pin 8 3 CVDD IC9 pin 8 4 DISPVA IC45 pin 8 5 AVCCIN IC50 pin 8 6 AVCC IC50 pin 1 7 VCAPNO L1 pin 6 8 FVDD IC26 pin 14 9 IC7 2 10 VCAPNO IC3 pin 1 11 AVCC IC13 pin 13 Voltage Range 5 00 150mV 5 00 150mV 5 00 150mV 12 15 500mV 16 00V 2 50V 12 00V 500mV 12 00 500mV 5 00 200mV 16 00 2 50 12 00V 500mV 5 00 250mV w o eu 2 BE 276502XX Rev 00 Model 7300 Service Manual 35 6 Electronic Tests Voltage Checks 10 Measure the following voltages on the 2763 board with a DVM use TP1 as ground reference Supply Name Location Voltage Range 1 VDD IC10 pin 20 5 00 150mV 2 DVDD IC20 pin 14 5 00 150mV 3 VBACK IC6 pin 32 4 50V 250mV 4 VBATT F1 12 60 500mV 5 VHTR F2 12 15V 500mV 6 VA IC21 pin 8 16 50V x 2 50V 7 VA IC21 pin 4 16 50V 2 50V 2 6502 ilee QE pum PE a 9 8 6 93 4 69 0 bvametrix PE m m
127. to EN55011 1991 and CISPR11 1990 Electromagnetic Immunity Conforms to EMC Directive 89 336 EEC EN50082 1 1992 Tested to IEC801 3 1984 Radiated Immunity Conforms to Medical Device Directive 93 42 EEC 60601 1 1992 Tested to IEC801 2 1991 ESD IEC801 4 1988 EFT and IEC1000 4 5 1995 Surge Immunity Rev 00 Catalog 9226 00 8951 00 9567 00 6934 00 8751 00 8776 00 8791 00 4941 00 4942 00 4943 00 5266 00 6147 00 8828 00 8829 00 8831 00 8832 00 6929 00 6968 00 8836 00 8943 00 6131 50 6131 25 8700 00 600026 9226 23 9226 90 NICO Accessories Description NICO Non Invasive Cardiac Output Monitor Model 7300 Includes Monitor CAPNOSTAT Sensor Sensor Power and User s Manual NICO Sensors 10 per box Standard size for tidal volumes of 450 1400 mL CAPNOSTAT Sensor Cable Management Straps for use with the CAPNOSTAT CO Sensor Organizes and holds multiple cables and tubings package of 5 CAPNOSTAT Sensor Cable Holding Clips 50 per box SuperBright Finger Sensor 10 ft sensor cable 1 yr warranty SuperBright Y Sensor 10 ft sensor cable 90 day warranty Saturation Sensor Extension Cable 4 feet Saturation Sensor Extension Cable 6 feet Saturation Sensor Extension Cable 10 feet Saturation Sensor Extension Cable 25 feet Saturation Sensor Extension Cable 50 feet 20mm Wrap
128. to infrared radiation constant the function of the case heater is to keep condensation from forming on the airway windows by elevating the window temperature above the ambient airway temperature Both heaters use an efficient Pulse Width Modulation scheme designed to decrease power consumption with the PWM timing generated by the TPU under microprocessor 16 Model 7300 Service Manual 00 Power Supply 2764 Power Supply and Communications Theory of Operation 3 Rev 00 3 3 4 3 3 5 control The MPU senses the voltage output from the CAPNOSTAT case and detector thermistors circuit described in the Analog 2754 01 PCB discussion and regulates the output pulses from the TPU creating a pulse duty cycle that is proportional to the amount of energy required to maintain the heater temperature Dual MOSFET Driver 10 buffers the signals to drive the gates of Dual P Channel MOSFET Q7 These drive signals are AC coupled by capacitors C24 amp C31 to ensure that if PWM pulses are lost for any reason the MOSFET gates will be pulled up by resistors R40 and R47 which will turn the MOSFETs Off removing power to the Capnostat heaters Dual MOSFET Q4 also controls power to the heaters allowing independent over temperature cut off of each heater by both software and hardware watchdogs D6 L1 and C25 help turn the pulses for the Case Heater from Q7A into a steady DC output while D8 L2 and C32 smooth out the Detector Heater output from Q
129. transistor Q21 In the absence of VDD VBACK drops down to a low power level supplied through diode D36 During system initialization the switching frequency is synchronized to the main system clock by the components associated with Q17 to reduce system data acquisition errors due to power supply interference The nominal synchronized frequency is 156 kHz The primary of transformer T1 is designed to accept 10 to 24 V DC input and provides secondary outputs of nominally 5 VDC 14 VDC and 14 VDC An additional winding pair is isolated by 2KV from the other transformer windings to provides 9VDC output for the earth connected and patient isolated serial and analog input and output circuitry The 5VDC supply VDD provides feedback to the switching regulator by resistor divider R108 and R112 The other windings are loosely regulated by the requirements of the 5 VDC supply by the ratio of the transformer windings creating semi regulated secondary voltages for the analog supplies of approximately 14VDC The 5V supply is L C filtered to provide clean logic supplies for both the digital logic VDD and the analog sections of the Digital and Power Boards DVDD Another filter isolates the 5 Volt supply for the Flow Pneumatics VVDD from the rest of the system Regulators IC33 and 1236 are designed as a tracking regulator pair to provide a 24VDC differential voltage for powering the Capnostat source VSRC VSRC The voltage level of the VA supply is
130. udolph Model 5550 or equivalent 5 2 Testing In this procedure term select refers to highlighting a selection screen turning the knob then pressing it in to select the highlighted option Connect the monitor to the AC line Set the rear panel power entry module switch ON Verify the AC LED turns on Press the power switch Verify the display shows the NICO start up routine followed by the main display screen reference the Users Manual for display appearance Connect the NICO sensor to the monitor Verify an ADULT NICO ADAPTER IDENTIFIED message is momentarily displayed Model 7300 Service Manual 29 5 Accuracy Tests DEM 11 12 13 5 Testing Connect sensor to the monitor Verify the SENSOR message 15 replaced by a WARMUP message Place the CAPNOSTAT sensor the NICO sensor airway adapter Press the MENU button Verify the SELECT A SCREEN menu is displayed Select the SETUP screen select ZERO NOW Follow the screen prompts to perform a zero calibration When the zero calibration is complete select EXIT NOTE The CAPNOSTAT sensor must reach operating temperature before zeroing Connect the Model 1298 Gas Calibrator with low point calibration gas to the NICO sensor the airway adapter stack see instructions with Model 1298 Gas Calibrator Press and hold the MENU and DATA ENTRY keys simultaneous
131. up CSBOOT ROMOEL 50 BR UBRAMWRL CS1 LBRAMWRL 52 BGACK SRAMOEL CS3 PCO FCO ROMWRL CS4 PC1 FC1 UARTCSL CS5 PC2 FC2 BOOTWE CS10 ECLK CASCADEL A23 we 0 Program PROM Chip Select Word 16 bits wide mode DO HIGH Upper Byte SRAM Write Enable Allows for byte 8 bit or word writes Lower Byte SRAM Write Enable Allows for byte 8 bit or word writes SRAM Read Enable Word FLASH PROM Write Enable Word High Speed quad UART Chip Select Port C Discrete Output prevents unintentional writes to FLASH EPROM This signal must be asserted before ROMWR in order to overwrite the FLASH High Address line A19 Real Time Clock Chip Select EL Display Chip Select Video Memory Chip Select Cascaded Chip Select for Additional Parallel Peripherals D8 pulled low Discrete on power up Ge ines on o mem _ De o _ ur sm 9 _ rer owes Dm omewemse Table 4 Chip Select Control and Discrete 10 Model 7300 Service Manual Rev 00 Digital Board 2763 Rev 00 3 2 2 3 2 3 Theory of Operation 3 2214 09 pulled low Discrete power up PF1 SYSUP E System Initialization Complete 2 CSOFTOT Case Heater Over Temperature Shut Down DSOFTOT Detector Heater Over Temperature Shut Down UARTIRQL
132. ure at the amplifier s output eg V 83 133V Ry 3 32K 10 2V where Rin resistance of the thermistor 4 36933K at 45 C amplifier output voltage Temp C 4 1288 ct V 41 7321 where eg amplifier output voltage at temperature T This error voltage is low pass filtered by amplifier IC8B sent to the ADC and processed by the CPU to regulate the output pulses from the TPU The error voltage out of amplifier IC9B also appears at the temperature watchdog comparator IC10A If the Model 7300 Service Manual 21 3 Theory of Operation Analog Board 2765 01 error voltage reaches approximately 56 degrees Celsius the comparator trips causing the output to go Low and turning off the heater supply on the Power Board 3 4 4 Flow Zeroing and Patient Line Purging Refer to sheet 5 on 2765 03 schematic The zero process begins when the CPU brings the VALVE1 VALVE2 VALVE3 VALVE4and VALVEG6 lines high energizing valves V1 V2 V4 and V6 This action disconnects the differential pressure transducer IC18 via V1 and V2 and the absolute pressure transducer 1 29 via V2 from the patient airway shunts the differential pressure sensor ports V4 and opens all pressure transducer ports to atmosphere through V3 Valve V6 switches the pump output from the external N CO Valve to the internal patient tubing and flow sensor The differential pressure transducer is zeroed by capturing the digital output of th
133. xtended pulse width as well as shortened duty cycle On the rising edge of CO2PWENB the trip point of IC6B is exceeded bringing the output of IC6B high as C12 charges through diode 04 This allows capacitor C8 to charge up through R22 If the CO2PWENB signal does not turn the Source Pulser off within 200 us after the 810 us pulse period the voltage across C8 will exceed the trip point for IC6A pulling the CO2INH line low and turning the Pulser off After the CO2PWENB signal returns Low capacitor C12 is allowed to discharge through R26 keeping the output of comparator IC6B at the voltage acquired during the period when CO2PWENB was High After approximately 7 2ms C12 will have discharged below comparator IC6B s trip point The comparator output goes low discharging C8 and the circuit is ready for the next source pulse cycle 3 3 3 CAPNOSTAT Case and Detector Heater Control Refer to sheet 2 on 2764 03 schematic The temperature of the CAPNOSTAT sensor system directly affects its ability to accurately measure Two separate heaters and control circuits are used to maintain the sensor temperature at a precise value One heater regulates the temperature of the detectors that detect the amount of infrared energy passing through the sample chamber the other regulates the temperature of the transducer case and loosely maintains the temperature of the airway adapter While the purpose of the detector heater is to keep the detectors sensitivity
134. y software to be a pre defined port function or discrete I O Additionally the functionality for several ports Ports C E and F can be pre defined by the state of specific data bus lines on system power up Included is a special background mode port that allows the device to be externally controlled facilitating system debugging and testing Also integrated on chip are several activity monitors as well as a software watchdog to ensure proper device and system operation Refer to table 1 Defined Function Functionality amp Power up Control TPU Timing Signal Generation Each channel independently user 16 Channels programmable as TPU function or as Discrete Table 1 CPU Port Functions Rev 00 Model 7300 Service Manual 7 3 Theory of Operation Digital Board 2763 QSM Serial Communications Port QSPI chip selects independently user 4 Synchronous Serial Queued Serial Peripheral programmable can be used as Chip Selects amp one Interface Discrete or decoded to create up asynchronous serial Serial Communications to 16 chip selects SCI transmit can channel Interface be programmed as Discrete Background Mode System debugging Allows an appropriate external device to control the microprocessor and system C Chip Selects DO CSBOOT Data Width 8 or 16 D1 CS1 CS3 BR BG BGACK D2 CS3 CS5 or FCO FC2 D3 D7 CS6 CS10 or A19 A23 Bus Control D8 Control Signals or Discrete MOD
135. y the addition of small valued resistors and or capacitors In addition good EMI EMC design techniques have been incorporated in the component layout and printed circuit board manufacture Table 4 lists the chip select control and discrete functions for the system module On power up Ports E and F are programmed as discrete inputs by pulling down their controlling data lines DB8 and 089 After power up the software sets up each pin function individually and performs a series of self tests to check the integrity of the system During this period the MPU holds the SYSUP line low which keeps the system in the initialization state The state of configuration inputs on Port E CNFGO CNFG1 and CNFG2 and on data input buffer IC10 see sheet 2 on 2763 03 schematic JP1 JP2 JP2 TP4 TP5 and TP6 are read These inputs allow the software to identify different operating conditions such as Manufacturing Diagnostic Mode or to recognize different hardware configurations After the initialization period is complete and all system functions have been set the MPU brings the status signal SYSUP high indicating that the system is ready for patient monitoring operation Port Pin Functions System Signal Comments Table 4 Chip Select Control and Discrete Model 7300 Service Manual 9 3 Theory of Operation Digital Board 2763 thru 7 00 07 pulled high Pins are Chip Select power
136. ystem initialization has been completed DAC 1023 also supplies an output voltage level SPO2VLED to set the current gain of the saturation drive circuit which is found on the N CO Power PCB 2764 01 The circuitry associated with the DACB output including 21 Q3 and 46 is presently not used Real Time Clock Power on RESET Generation and Glue Logic Refer to sheet 2 on 2763 03 schematic Time keeping for date and time stamping of patient trend information is provided by Real Time Clock IC16 This device contains a built in crystal for precise time and date 12 Model 7300 Service Manual Rev 00 Power Supply 2764 Power Supply and Communications Theory of Operation 3 Rev 00 measurement The N CO system has been designed and tested for Y2K compliance In the absence of digital power the time keeping function is maintained by the battery backed up supply VBACK On power up the system is forced into a RESET state by IC9 sheet 1 on schematic This chip creates the master active low system reset signal SRST holding up system initialization until a stable 5 VDC logic level is maintained An inverter is used to generate RESET for devices that require an active high reset signal 3 3 Power Supply 2764 Power Supply and Communications 3 3 1 Serial Communications UART Refer to sheet 3 on 2764 03 schematic To enable serial communication with up to three external devices simultaneously a Quad UART Universal Asynchronous Rece

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