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Service Manual - Frank`s Hospital Workshop

1. PART NO REV QPA DESCRIPTION 154062 23 CAPACITOR 01UF 50V 10 X7R SURFACE MOUNT 154072 59 CAPACITOR 1UF 50V 10 X7R CER CHIP M 154078 1 CAPACITOR 1000PF 50VDC 10 NPO MONO CERA 154079 7 CAPACITOR 10UF 25V 10 TANTALUM SURFACE 154080 8 CAPACITOR 47UF 10VDC 10 TANTALUM SURFAC 154081 1 CAPACITOR 100PF 100V 10 NPO MLTILYR CER 154082 2 CAPACITOR 22PF 100V 10 NPO MLTILYR CERA 154093 2 CAPACITOR 68UF 16VDC 10 TANTALUM SURF M 180022 3 INDUCTOR 10UH 10 SURFACE MOUNT 180029 15 INDUCTOR 50MHZ CUT OFF FREQUENCY SURFACE MO 180030 2 INDUCTOR CAP 4700PF 50VDC 2A 3 TERM SURF 180046 1 INDUCTOR 18UH 2 5M HZ 25 15 SURFACE 180047 4 INDUCTOR 50 OHMS 100 HZ 1206 STYLE 210141 1 CONNECTOR DC PWR JACK SOLDER TERM PC PNL M 211415 1 CONNECTOR 4 PIN HEADER 079 SP R ANG PC 218412 1 CONNECTOR 40 PIN HEADER DIL STR 05 SP 215073 1 SOCKET PLCC 32 PIN 05 SP LOW PROFILE 216029 0 TEST POINT SPRING LOADED 475 DEG MAXIMUM 230027 1 CRYSTAL 12 00 MHZ 192 SP HC 49 US STYLE 250146 2 VALVE SOLENOID 5V 0 30 PSIG 10 PSID MAX 2739 01 00 1 BATTERY amp COMM INTERFACE BOARD ASSY MODEL 61 2740 02 01 1 FAB MAIN BOARD MODEL 101 VENTCHECK 474127 1 RESISTOR 511K OHM 1 8W 1 SURFACE MOUNT 474136 11 RESISTOR 1K OHM 1 8W 1 SURFACE MOUNT 474137 3 RESISTOR 1M OHM 1 8W 1 SURFACE MOUNT 474138
2. 0 REV QPA DESCRIPTION 154062 4 CAPACITOR 01UF 50V 10 X7R SURFACE MOUN 154072 3 CAPACITOR 1UF 50V 10 X7R CER CHIP SM 154079 2 CAPACITOR 10UF 25V 10 TANTALUM SURFACE 154081 1 CAPACITOR 100PF 100V 10 NPO MLTILYR CER 154114 3 CAPACITOR 022UF 50V 10 X7R 1206 SIZE 180022 3 INDUCTOR 10UH 10 SURFACE MOUNT 180043 1 FERRITE BEAD 30 OHMS AT 100MHZ 0603 STYLE 211514 1 CONNECTOR 5 PIN HEADER RT ANGLE 1 SP PC 211639 1 CONNECTOR 6 PIN RCPT ZIF R ANG 05 SP P 213411 1 CONNECTOR 40 PIN RCPT PASS THRU DIL STR 213412 1 CONNECTOR 40 PIN HEADER DIL STR 05 SP 216029 0 TEST POINT SPRING LOADED 475 DEG C MAXIMUM 2741 02 01 1 FAB INTERFACE BOARD MODEL 101 VENTCHECK 2741 03 00 0 SCHEMATIC INTERFACE BOARD MODEL 101 VENT 2741 04 00 0 TEST PROCEDURE INTERFACE BOARD MODEL 101 280233 0 SPACER LED FOR 2 LEADS 2 DIA X 1 LONG B 280234 0 SPACER LED FOR 3 LEADS 255 DIA X 185 1 280235 0 SPACER LED FOR 2 LEADS 25 DIA X 2 LONG 474136 6 RESISTOR 1K OHM 1 8W 1 SURFACE MOUNT 474165 7 RESISTOR 10K OHM 1 8W 196 SURFACE MOUNT 474166 1 RESISTOR 100K OHM 1 8W 196 SURFACE MOUNT 474174 4 RESISTOR 332 OHM 1 8W 196 SURFACE MOUNT 474186 1 RESISTOR 15K OHM 1 8W 196 SURFACE MOUNT 474220 1 RESISTOR ZERO OHM 1 4W 5 1206 STYLE SUR 474274 1 RESISTOR 20K OHM 1 8W 196 1206 STYLE SURF 474276 1 RESISTOR 866K OHM 1 8W 196 1206 STYLE S
3. 24 Reassembling the monitor 26 6560 5 DUE RR ERE oi GG 27 Parts LISIS 29 6800 00 Final Assembly Model 101 29 6800 01 Assembly Model 101 29 2740 01 01 Board Assy Model 101 30 2740 17 01 Board Subassy 0 1101 30 2739 01 00 Battery amp Comm Interface Board ASSY 32 2741 01 00 Interface Board Assy Model 101 22222 32 6935 48 00 Test Fixture Flow Leak Test 33 Drawings and Schematics eese 35 Vi Model 101 Service Manual Rev 01 Rev 01 Guarantee Equipment manufactured or distributed by 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 cali
4. XTAL 1 24 41 ADI2 7 10 P4 5 AD13 26 SRST EAR P4 6 AD14 Fee NMI P4 7 AD15 A 7 R120 Qohm 116 51ROOP 8255_CS gt CLKOUT g5 CLKOUT m BHE WRH Fee 17 30 WRE PS 0 ohm L18 _ 51R00P ADR LEA 54 ALE ADV 5 U E INST 5 L19 51R00P BUSWIDTH C96 CALE 0 L24 51R00P 32 K T XD PVER P2 0 PALER P2 1 lt MPU_RXD L EXTINT PROGR P2 2 gq X na F5V T2CLK P2 3 01 gt 750KHz P 51R00P 26 AINCH T2RST P2 4 E EE OUT L20 Avec lt lt V REF PWM P2 5 35 KLED_ WM 18 T2UP DN P2 6 UNDA _0 17 0 0 PACT T2CAPTURE P2 7 COMMPWR R88 ACH_1 191 ACH 1 0 1 P 2 ACH 2 0 2 499k 54 ACH 3 P0 3 HSI 0 510 0 7753 AWPRESS 3 ACH 4 PMODE 0 P0 4 HSI 1 SID 1 ABPRESS 507 ACH 5 PMODE 1 P0 5 HSI 2 HSO 4 510 2 755 51 ACH 6 PMODE 2 P0 6 HSL 3 HSO 5 510 3 qq X VBATTADC lt lt ACH 7 PMODE 3 7 50 0 755 AUD CLK 25 HS0 1 Fes ANGND HSO 2 33 HSO 3 R89 P 80C196KB QFP Mae 100k 8145 0 ohm 5 m CLKOUT S mr Mz F5V GE F5V R90 R86 U26 10k a 2 1 RESET C45 C46 KSRST 0 1uF 10uF 4 GND 08 247002 TL7757 I w U15 74HC08 51R00P FSV Decoupling caps for 015 029 and U27 51R00P KAIO 7 51R00P L23 MCM60L256AF 10 32k x 8 S
5. Dzie Oaie Wednesday May 28 1997 IE
6. MAIN BOARD D2740 03 BATTERY amp COMMUNICATION INTERFACE BOARD 02739 03 600068 INTERFACE BOARD 02741 03 125V SLO BLO 2A 125V 5 600518 MEMBRANE KEYPANEL C6824 27 BT201 gt 7 2V DC SHIELDING w RR dA O ate Des JE LLL wo O SHIELDING GLI mu E e OMENSIONS ARE IN INCHES mm 2 E DIAGRAM MODEL 101 NOVAMETRIX M pr P VENT CHECK MEDICAL SYSTEMS INC sy WALLINGFORD CT USA 06492 s Ueamuc wo cow RF 6800 22 69 prm 2754 eor 003 m 09 Tha contans lormaton etch s pro prelory and the property of Musom tra Mediol Systema and may Le reproduced scIosed m hoa of in part wiht the consent o Hovometra Madical Systems inc LOCATE PATIENT ISOLATION LABEL ON TOP COVER NOTE ORIENTATION J408 LOCATE QUICK GUIDE LABEL ON BOTTOM COVER NOTE ORIENTATION LOCATE SN LABEL INSIDE BOTTOM COVER NOTE ORIENTATION VENT weg 9 DETAL SEE DETAIL FoR SN LABEL LOCATION NOTES FOR SYSTEM TEST PROCEDURE SEE 6800 04 FOR QA TEST PROCEDURE SEE A6800 70 FOR SHIPPING INSTRUCTIONS SEE A6800 33 FOR OVERALL WIRING DIAGRAM SEE D6800 09 THE FOLLOWING ITEMS AR
7. 5V THICK TRACE 10 uH 10 uH C82 C83 C85 C86 47 uF 47 uF 0 01 uF 0 01 uF p p p P CPU GROUND PLANE 0 01 uF u22 PAO PAI PA2 PA4 PAS 0 82C55A PLCC44 C88 47 uF D 0 7 gt 0107 07 A 0 7 KA 0 7 NOTE 1 UNLESS OTHERWISE SPECIFIED 29 RESISTANCE VALUES ARE IN OHMS 1 8W 1 CAPACITANCE VALUES ARE IN FARADS 1 INDUCTANCE VALUES ARE IN HENRY S 2 LAST REF DES USED C103 019 F2 1503 C81 9405 125 013 R150 TP17 UJ1 V2 VR4 Y1 3 COMPONENTS NOT USED 0 01 uF GND jl o VALVE_SUPPLY gt VALVE_RETURN 017 0914 VLV_CNTL 19952 VALVE RETURN gt 3 MODEL 101 MAIN BOARD NOVametrix REZEH ERP L1 IL 1 Medical Systems lac Drawn 1 Barnes industriel Park Road eg Approved Size Document Number Code BILE 7 7 AJE 2740 File 2740 03 00 L Rev T B No By Date Date Monday July 14 1997 ee a a VSWDC L4 A 61R30T Q3B 5 3 6 2 KVSWDC 519952 R18 100k R19 R20 100 100k D914 POWER SW 100k 04 lt VBATTADC POWER_HOLD gt LL 2N7002 R21 C13 015 49 9k 0 1uF C12 D914 0 1uf D18 i VBATT MMBD301L MBRS340T3 R22 M 12V 5V a VCHG R24 4 dk MBRS340T3 511k LM339 7 019 0914
8. AMP04 AD822AR 100 POT 5k Rs 1k AD620 POT 5k Rs 10 180047 A 200k C22 180047 180047 180047 0 1 uf 7 150 FLOW 10 C89 C90 0 tut fe 0 01 uF 0 01 uF 40 2k U5B Rg 6 a R64 Rg 6 5 0822 100 m AD620 20k 20k R68 C27 C28 C93 R69 0 1uf 0 1ut 0 01 uF NEG AvcC 2 lt gt M C48 10k FLOW 100 0 0tuF R71 R72 10k ov 20k KACH_2 R77 TLC2262 100 4 C32 R78 0 1 ut 100 U6A GF R79 4 99k avec amp 3 AD822 DAC A Y R80 249k R81 4 DAC B gt lt gt ib FLOW 1000 0 882 499 6 R84 1 M 5 KACH_3 DXLO1D Alternate Pressure Transducer C35 Eco MODEL 101 MAIN BOARD N OV ametri X i 0 01 ul ay er Medical Systems Inc E 1 Bornes fedustrial Park Road Wallingford USA 06492 84 154 Document Number Code Rev B 2740 03 01 ozea 2740 03 00 Gheel 5 m O Bu 09 1038 Monday July 14 1997 13 1 5 AVGC 12V R91 C49 100 0 lut 0822 2 v UTA R92 3 12V 100k 9 R94 C50 0 1uf 100 C53 JA 030 R97 TP11 255 ohm ABPRESS 5V C SCC30AD4 mee 0914 po uU R98 R99 6 KABPRESS 010 1 50k 100 D914 654 0 14 0620 55 7 12V T 1 0 1uF Rigo gt R102 gt A NEG AvcC 2 lt lt due C103 AVCC 5 5 Gi R103 0 34 0k 1uF TP12 R134 AWPRESS 10k
9. Adjust VR1 until the x1 channels DIFF CNTS reads 887 counts Press the GRAPH ZERO key Repeat steps 5 and 6 until the x1 channels DIFF CNTS is 887 counts 2 counts Switch the Pennwalt s output from the positive port to the negative port clear tube of the Differential test fixture Verify the x1 channel reads 887 counts 25 Disconnect the Differential Test Adapter 6 3 Barometric Pressure Calibration 5 Hev 01 Perform the following only if the barometric pressure reading of the monitor does not match the currrent barometric pressure as recorded from a calibrated barometer This procedure requires adjustments for offsets within the electronic circuitry and must be performed accurately and carefully Connect the 6937 48 Common Mode Test Adapter to the monitor Press and hold the DATA key then press the POWER key to power up the unit in the engineering menu Press the GRAPH next key until the selection arrow is pointing to CALIBRATE on the display Press the DATA select key to enter the Calibration screen Note The top line of the calibration screen Pbar has 3 parameters displayed They are in order BARO ADU The A D counts reading for the barometric pressure channel The applied gage pressure mmHg to the unit This parameter ADDED PRESSURE must be read after a ZERO Changing the offset or span will make this number meaningless until the next zero The TOTAL pressure mmHg Barometric plus added
10. HAND HELD RESPIRATORY MECHANICS MONITOR Service Manual Model 101 April 17 2000 Catalog No 6800 90 01 Novametrix Medical Systems Inc PO Box 690 5 Technology Drive Wallingford Connecticut U S A 06492 Revision History Revision History 22 May 98 Release 17 Apr 00 Revision 01 R N746 Rev 01 Model 101 Service Manual iii Revision History This page intentionally blank Model 101 Service Manual Rev 01 Rev 01 Table of Contents Safety koc Edd dada M 1 TERR 3 Keypad Controls and Indicators ore 4 idee qm co sc Stes 4 Theory of Operation 5 Main Board 5 Power SUPDIY eere eet ei Oe f aa A de o ee Fe eed das 5 Reference Voltages t Eee ea Pe e Ee tux 5 Battery Charger tte ei teen Did eee 5 iae ET 6 Digital Control and 6 Serial Communication 7 Nope sede et tee Se JA 7 E 8 Analog Control 8 Sensor Identification aaa aaa aaa tentent nnne 8 Flow EE WE EEE A ZA ACE ee A ieee 8 Flow GIFGUHy 9 Barometric and Airway Pressure nnnm 10 Inieriace Board DE 11
11. OxF800 R24 332 D3 MPY3371 LEDE gt Z i MODEL 101 1NTERFACE BO Novametrix EEE WIE SKS Medical Systems lac 04 MPG5373X EET Drawn Bornes Tadusiruat Park BVOD e manne ct usa vem Eom e eue pee 2741 03 A File 2741 03 01 2 vSwoc 2 BLM11P3008 i C15 10uH 07 171302 T 220uF MBRS140T R16 100k C6 100 220uF Elect 35V TP2 GND VALVE SUPPLY lt lt LTC1144 TAB GNO 2 VALVE RETURN lt lt GNO Vin Elect 0 01uF 111129 5 5 35V TP4 E TP 5V 9 LO Decoupling Capacitors C20 Out 3 TAB GND 4 gt 817 866k C21 C19 220uF C4 C13 Vin lt vswoc 0 01uF Elect 0 022 uf 0 022 uF LT1129CST 5 35V 12 TP_PQS_J2v LCD L2 10uH C8 220uF Elect 35V TP_NEG 12 12V 220uF Elect 35 NOTE C22 1 UNLESS OTHERWISE SPECIFIED RESISTANCE VALUES ARE IN OHMS 1 8W 1 CAPACITANCE VALUES ARE IN FARADS INDUCTANCE VALUES ARE IN HENRY S LAST REF DES USED C19 07 Fl ES 94 L4 02 R24 TP4 U7 C14 1 COMPONENTS OT USED 1 820 821 0 022 uF m AJ Medical Systems lac X Drawn Checieg 1 fadusiriel Park Road ee eee I SED osis ae eT Approved u Document Number Code e E Ec 2741 03 pe 7741 03 0 heel L Rev
12. Section 7 Assembly Exchanges 5 Remove the Main Board 6 The Interface Board and battery connector can now be accessed 7 To disconnect ribbon cable J3 grasp the edge of the ZIF zero insertion force connector with one forefinger on either side Pull gently sideways to release the mechanism Slide the ribbon cable out ZIF connector O ribbon cable _ 8 Remove four screws from the Interface Board Disconnect the screw on the battery connector black and red wires 69 69 17 inerface board screws 44 A 1 J4 2 J1 DEREN battery connector screw J1 header 4 battery connector 9 Slide the battery connector out the bracket and remove the interface board rocking gently to release the header strip J1 which connects through the Interface Board from the Display Board below 26 Model 101 Service Manual Rev 01 Assembly Exchanges Rev 01 Section 7 Remove 4 screws holding the Display Board in place Do not bend the tabs on the board the LCD display can not be removed from the board Be sure not to lose the plastic bezel located in between the LCD display and the display window display board _ gt screws ribbon cable 7 5 2 Reassembling the monitor
13. TRANSISTOR 2 700211 N CHAN ENHAN MODE 486314 MC74HC541DW BUFFER LINE DRVR RCVR 486323 IC SN74HC573DW OCTAL 0 LATCH 487125 111302658 DC DC CONVERTER PIN 515087 FUSE W FUSEHOLDER 1A 125V SLO BLO NOTES 1 02741 01 SPECIFICATIONS FOR TEST PROCEDURE SEE A2741 04 A COMPONENTS NOT FITTED D1 R20 R21 DENOTES THRU HOLE COMPONENTS INTERFACE BOARD ASSY MODEL 101 VENT CHECK NOVAMETRIX lt 7 MEDICAL SYSTEMS INC 5 WALLINGFORD USA 06492 APPROVED 6 24 97 FED DERON 576 DRamnc Cone Rey 2 01 00 2 1 42 LED_PWM AESET 8vDD oF POWER_SW 0xF807 lO F808 A O 5V O 12V CVALVE_RETURN OxF806 gt 0xF807 0 0 7 VDISP aa 3 4 5 DISPLAY 10 71 0573 2 9 NA 8 KVALVE_SUPPLY 247002 7 6 5 KVSWDC E 4 3 2 1 System Intertace 40 39 3 Battery Interface 37 36 R8 01 POWER_SW SLIME a KpoweR_ LED_A A21 332 A LEO_B A AN SSSR SE CRE oe R22 ee Key Panel Intert 332 AA L ey Panel Intertace LED_C gt 0914 R23 332 A LED_D gt 74HC541 VRPG3312X
14. BVDD TP15 5 10 100 mV THERM TP16 2 25 50 mV Press the POWER key on the monitor Measure the following voltages Use TP2 as ground reference Signal Name Side Location Voltage Tolerance F5V Front IC19 pin 28 5 10 100 mV Model 101 Service Manual 17 Section 6 TP_POS_12V Front IC16 pin 8 12 0 Vdc 100 mV 300mv 12 Front IC16 pin 4 11 5 500 mV TP_AVCC Front 1 5 00 25 mV TP_AVCC 2 Front TP2 2 50 25 mV TP_1 47V Front TP3 1 47 25 2 IC24 4 2 50 25 mV Measure the voltage at IC7 3 on the 2741 01 board Verify 5 00 100 mV Monitor IC11 pin 8 Verify a voltage lt 4 1 Vdc Monitor IC11 pin 10 Verify 0 VDC Monitor IC11 pin 14 Verify a switching pulse with a frequency of approximately 85 KHZ Note The frequency pulse width and period will change depending on the battery charge status No 9 Using a clip lead short TP15 to TP16 Verify the switching frequency at IC11 pin 14 changes from approximately 85 KHZ to lt 50 HZ Verify IC1 pin 10 goes high 6 2 2 Airway Pressure Calibration 10 Press the POWER key to turn the unit off 11 Press and hold the DATA key then press the POWER key to power up the unit in the engineering menu 12 Press the GRAPH next key until the selection arrow is pointing to CALIBRATE on the display Press the DATA select key t
15. Key panel Interface naeea 11 Display interface EET 11 LED CONTON oona 11 Power SUpplies 2 cte 11 Functional Tests 13 Equipment REQLired saa dod GRE EA AERO 13 Pm 13 Tests CE ORI EET B RR ER 15 Equipment Bequlred ace d ten P bua cud n E 15 FIGOSdUlO eo edt addet di e m 15 Electrical TESTS Chen Gc Eo aM 17 Equipment Required see o o t e xe 17 Model 101 Service Manual Table of Contents Procedure AiR AAAA tae 17 Power SUpplIeSC ma citet generet Les CE AA O Pe n 17 Airway Pressure Calibration 18 Differential Pressure Calibration 2 19 Barometric Pressure Calibration 2 19 a 21 IC ICM TENUIT 21 Maintenance Schedules 2 21 Glea ing and SterlizallGli uci iter reat 22 Battery and AC Operation 0 4 448 22 Battery Installation wci z d anti eii tea Ak 23 External Battery Charger nent 23 Features Connector con nad lodek GE kd DONOR 23 Assembly EXCHANMJOS aw ec aka 24 Disassembling the
16. Model 101 Service Manual Vii Guarantee 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 9 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 exchanges Repairs provided due to product abuse or misuse will be considered non warranty and invoiced at the prevailing service rate Repla
17. Paw remains the same for at least 30 seconds Disconnect the Flow Leak Test Adapter Model 101 Service Manual 15 Section 5 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Procedure Connect the 6937 48 Common Mode Test Adapter to the unit Using the pressure source apply 20 cmH5O to the Common Mode Test Adapter Verify a Paw value of 20 0 2 0 Increase the pressure source to 80 2 Verify a Paw of 80 0 2 0 Press the POWER key EXIT to exit the Calibration screen Press the GRAPH next key until the arrow is beside EXIT then press the DATA select key to exit Connect the 6717 01 Adult Flow Sensor to the 500cc Calibration Syringe then connect to the Model 101 Press the DATA key to display the Flow Volume screen repeated key depressions may be required Pump the Calibration Syringe at approximately 20 cycles per minute one stroke every 3 seconds use a smooth and steady action when pumping the syringe Verify VTi and VTe read 500ml 25ml Press the GRAPH key Verify the Volume screen is displayed repeated key depressions may be required Verify a Vt of 500ml 25ml with a volume waveform present Remove the Adult Flow Sensor Verify the unit displays NO SENSOR DETECTED INSERT FLOW SENSOR Install the 6718 01 Neonatal Flow Sensor Verify a NEW SENSOR DETECTED TYPE Neonatal is temporarily displayed Ve
18. and 1000 ACH_3 The gain of 1 amplifier is used to buffer the flow signal and provide signal conditioning consistent with the other channels The x10 x100 and x1000 channels amplify the flow signal according to the following equation Vout Vgow Vrefo 2 A Vrefo 2 where A is the amplifier gain 1 10 100 or 1000 Rg is the feedback resistor R51 R58 R68 R78 R is the reference resistor R131 R61 R73 R82 The circuit is designed to amplify the difference between the flow signal into each gain stage and the reference voltage so the zero point of each stage remains at mid scale The output from each gain stage appears at the microprocessor for conversion into digital information An alternate pressure transducer U29A may be installed in place of U29 The principal of operation is the same as described above with the exception that it s full scale pressure input range is O to 10 inches of water and it is excited by a constant 5 0 volt AVCC reference 3 1 13 Barometric and Airway Pressure Refer to page 7 of the 2740 03 schematic U30 is a piezoresistive differential pressure transducer with port P2 held at a vacuum 0 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 0 to 30 psi has internal temperature compensation and is designed to be driven by a constant current source Resistor R99 is used to set the current throu
19. 1 Check the inside of the display window and the LCD display for dirt finger prints clean if necessary Replace the plastic bezel around the display window Set the Display Board in place and secure with 4 screws Place the battery connector red and black wires into the bracket and push in Secure in place with 1 screw Place the Interface Board in the case taking care to align the pins at header strip J1 underneath line the LEDs up with the openings in the case this will give you a point of reference When you are sure the pins are lined up with the holes gently push down do not force Place the strain relief section on the sensor cable into the egress slot push down to lock in Secure the Interface Board with 4 screws Slide ribbon cable J3 into the ZIF locking connector pushing gently to be sure that the cable is as far into the locking mechanism as possible Push the connector closed to lock in the ribbon cable Pull lightly on the ribbon cable to ensure that it is secure Replace ribbon cable from the Main Board to the Interface Board and align the main board with the standoffs Ensure the battery gasket is set in place refer to the assembly print 6800 01 page 3 for placement Place the back cover on the monitor Secure with 4 screws Opened hinged cover and replace the rechargeable battery or battery pack Battery is keyed to fit in only one direction When the monitor is powered it will default to the factory default
20. 30 RESISTOR 100 OHM 1 8W 1 SURFACE MOUNT 474141 2 RESISTOR 249K OHM 1 8W 1 SURFACE MOUNT 474152 2 RESISTOR 3 01K OHM 1 8W 1 SURFACE MOUNT 474157 3 RESISTOR 511 OHM 1 8W 1 SURFACE MOUNT 474161 1 RESISTOR 5 9K OHM 1 8W 1 SURFACE MOUNT 474165 26 RESISTOR 10K OHM 1 8W 1 SURFACE MOUNT 474166 19 RESISTOR 100K OHM 1 8W 1 SURFACE MOUNT 474170 2 RESISTOR 301K OHM 1 8W 1 SURFACE MOUNT 474182 2 RESISTOR 150K OHM 1 8W 1 SURFACE MOUNT 474185 1 RESISTOR 150 OHM 1 8W 1 SURFACE MOUNT 30 Model 101 Service Manual Rev 01 Rev 01 Section 9 REV DESCRIPTION 474186 1 RESISTOR 15K OHM 1 8W 1 SURFACE MOUNT 474211 7 RESISTOR 49 9 OHM 1 8W 1 1206 STYLE 474216 1 RESISTOR 4 99K OHM 1 8W 1 1206 STYLE SR 474220 7 RESISTOR ZERO OHM 1 4W 5 1206 STYLE SUR 474263 1 RESISTOR 28K OHM 1 8W 1 1206 SIZE SURF 474273 1 RESISTOR 14 7 OHM 1 8W 1 1206 STYLE SU 474274 8 RESISTOR 20K OHM 1 8W 1 1206 STYLE SURF 474275 2 RESISTOR 1 5K OHM 1 8W 1 1206 STYLE SUR 474277 1 RESISTOR 15 OHM 1 2W 2010 STYLE SURFACE 474278 1 RESISTOR 237 OHM 1 8W 1 1206 STYLE SUR 474279 1 RESISTOR 562 OHM 1 8W 1 1206 STYLE SURF 474280 1 RESISTOR 243 OHMS 1 8W 1 1206 STYLE SUR 474281 1 RESISTOR 71 5K OHM 1 8W 1 1206 STYLE
21. 8 hours 12 hours Recharge Time n a 4 5 hours 400038 battery Catalog Number 6862 00 case 400043 AA Alkaline Batteries To power Model 101 from AA alkaline batteries insert seven disposable alkaline batteries Panasonic AM3X or equivalent into the Battery Case Cat No 6862 00 following the polarity markings on the case WARNING Do not recharge or incinerate alkaline batteries Attempting to do so may cause the batteries to leak or explode Rechargeable Battery Model 101 can operate from the optional NiMH or equivalent rechargeable battery If a rechargeable battery has not been used for three months or more recharge it before use WARNING Battery can explode leak or catch on fire if heated or exposed to fire or high temperatures 22 Model 101 Service Manual Rev 01 Battery AC Operation Section 7 NOTE New batteries or batteries stored for extended periods of time may need to be fully charged and discharged up to five 5 times before performing at full capacity With a new battery or a battery that has not been used for 30 days charge the battery for 24 hours prior to use Refer to instructions packaged with rechargeable battery for complete operating instructions Additional Battery Information Dispose of batteries in accordance with local laws Do not mix battery types e g disposable and rechargeable AA batteries Model 101 may not power up if the batteries are ne
22. D1 Model 101 Service Manual 5 operating in the region and C68 and C69 provide filtering Over current protection is provided by F2 a 1 slo blo replaceable fuse Reverse leakage protection is provided D2 and D7 which prevents the battery from trying to power BVDD and VCHG in the battery operation state 3 1 4 On Off Control Refer to page 4 of the 2740 03 schematic When the power key is pressed the cathode of D3 is brought to ground bringing the anode low this biases Q3B on and allows VDCIN to power the unit Pressing the power key again will signal the processor that the unit must power down The processor will assert the POWER_HOLD line low to bias Q4 off this will turn Q3B off and power the unit down The voltage level of the battery or power source is monitored by U13A If the VSWDC level drops below a certain threshold then comparator U13A will go low this will pull the POWER_HOLD line low through D19 and shut the monitor down 3 1 5 Digital Control and Microprocessor Refer to page 1 of the 2740 03 schematic The system is controlled by microprocessor U18 Eight analog channels are monitored and processed and several digital lines are generated for various operations The analog channels are monitored and converted to digital information by the microprocessor These channels are listed below ANALOG DESCRIPTION CHANNEL ACH_0 Airway flow channel X1 ACH_1 Airway flow
23. IC CS82C55A PROGRAMABLE PERIPH INTFC 8MHZ 486354 1 LTC1384CS L PWR RS232 RECEIVER 18 PIN 486481 1 IC TLC5620CD QUAD 8 B D TO A CNVRTR 14 P 486785 1 IC LP339M QUAD VOLTAGE COMPARATOR ULTRA LO 486808 1 IC AD680JR 2 5 VOLTAGE REF L PWR 8 PINS 486811 1 IC TLC2262AIDR DUAL OP AMP RAIL TO RAIL 486820 1 IC BQ2004SN FAST CHARGE 16 PIN SURFACE MO 486821 9 IC AD822AR FET IN OP AMP L POWER 8 PIN S 486824 1 IC MC74HC4024D BINARY RIPPLE CNTR 7 STAGE 487108 1 IC TL7757CD VOLTAGE SUPERVISOR 8 PIN S MN 487115 3 IC AD620BR INSTR AMPLIFIER L PWR 8 PIN S Model 101 Service Manual 31 Section 9 PART REV DESCRIPTION 487124 IC ERT 3281 REFLECTIVE SENSOR H SPD 4 PIN 487126 SCC30AD4 PRESSURE SNSR 30 PSIA 6 PIN 515087 515090 a W FUSE W FUSEHOLDER 1A 125V SLO BLO SUBMIN FUSE 2A 63V VERY FAST ACTING THIN FILM S 9 5 2739 01 00 Battery amp Comm Interface Board Assy LINE PART NO REV QPA DESCRIPTION 0001 2739 02 00 1 FAB BATTERY 8 COMM INTERFACE BOARD MODEL 101 0002 2739 03 00 0 SCHEMATIC BATTERY 8 COMM INTERFACE BD MODEL 101 0008 211512 2 CONNECTOR 5 PIN HEADER STRAIGHT 1 SP MNT 0009 211638 1 CONNECTOR 6 PIN RECEPTACLE MOD CONTACT 9 6 2741 01 00 Interface Board Assy Model 101
24. R109 1 10 ACC gt 6 lt POWER_HOLD 712 1 RAPC 712 1 Top View o IN BOAR MODEL 101 o Novametrix prose Medical Systems Inc e dmm Drawn Checred 1 Barnes Industria Park Rosd PRE MAREK USA 06497 Size Document Number 2740 Fle 2710 01 00 Sheet Rev Date Date Monday July 14 1997 RB ZO M A 5 15 0k 3904T VA TP R128 TP AVCC 12V 101 C87 X AW DAC AVCC 5 0 Volts lt C2 Es 10 0 TP 2 L 12v 100 E 0 1uF AVCC 2 2 50 Volts R26 gt KAVGG_2 10k 100k 100 ohm AD822 5 RZ N 3 12 ZW CA TP3 0822 R6 TP_1 47V 4 X CONTRAST DAC 10k KAVCC DAC_SDI DA _LD DAC CLK T A 15V 14 7k 100 ohm C8 47 1 5V reference vA TLC5620 0 1uF 12 R149 EEEE ea ee MODEL 101 MAIN BOARD NOVametrix x Medicat Systems Inc Drawn Checked 1 Barnes Industrial Park Road GC GERE GAZA Approved Document Number Code Lc p ed iia 2740 03 01 20497 jFile 2740 03 00 Sheet 5 n R By Date Date Monday July 14 1997 of 9 E gt VS effective 6V 029 BR 51 004004 56 1 50k U6B 3 B R52 A 15V 100k 21 0 1
25. SENSOR CONNECTOR 2740 v2 2740 1 2740 030 NOTE ALL PNEUMATIC ASSY ITEMS ARE PART THE FLOW CONNECTOR AND TUBING ASSY B NOTE TUBING POLARITY WHEN MAKING CONNECTIONS INDICATES ORDER OF TUBING CONNECTIONS PNEUMATIC DIAGRAM NOTES 1 02740 01 SPECIFICATIONS FOR TEST PROCEDURE SEE A2740 04 MAIN BOARD ASSY MODEL 101 VENT CHECK DRAWN SJua CHECKED MR Lipeback 7 14 97 R APPROVED AJE Bi 7 14 97 NOVAMETRIX MEDICAL SYSTEMS INC WALLINCFORO CT U S A 06492 SIZE DRAWING NO CODE REV D 2740 01 TOLERANCES fea t LES 007 903 3 USED ON D6800 01 SCALE 2 1 SHEET OF CH C72 O0tuF OO1uF 0 01 uF C38 10 uf 0 1 uf 0 01 uf GT 74HC573 wn 018 en e 34 DAC_SDI DAC 10 77 DAC 5 i 0 0 1 OCDRV 2 P1 6 HLDA 48 3 POWER HOLD 114 51R00P 57 1 VSS P1 7 HOLDS VLV_CNTL VSS 15 51R00P o VSS P3 0 ADO o1 n 0 VSS P3 1 ADI dp eh EA vee mido ce M PM eis D yss PSr Dic ee Dp P3 7 AD7 obaw XTAL 2 4 0 ADB P4 1 09 P4 2 ADIO P4 3 011 AID b gt b gt b b gt bp bb Et ies
26. m will not adversely affect system performance VENTV contains no user serviceable parts Refer servicing to qualified service personnel This product and its accessories which have patient contact are latex free For maximum patient and operator safety observe the following warnings and cautions Indicates a potentially harmful condition that can lead to personal injury Explosion Hazard Do NOT use the VENTW 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 monitor off before cleaning it Do NOT use a damaged monitor or sensor Refer servicing to qualified service personnel Fire Hazard The VENTW should not be exposed to elevated oxygen levels at elevated pressures Use in such an environment may present a fire hazard Failure of Operation If the monitor fails to respond as described do not use it until the situation has been corrected by qualified personnel Do not apply tension to the sensor tubing while connected to a patient breathing circuit as accidental extubation may result Do not position the flow sensor s tubing in any manner that may cause entanglement or strangulation Use the optional external battery charger in non patient areas only Model 101 Service Manual 1 Section 1 CAUTIONS Indicates a condition that may lead to equipment damage or malfunction Federal U S A law res
27. outputs are used for gain control in the flow measuring circuitry DAC_C s output is used for offset adjustments in the airway pressure measuring circuitry DAC_D controls the VDISP voltage through U9A and Q10 this varies the contrast on the monitor s display 3 1 10 Sensor Identification Refer to page 8 of the 2740 03 schematic When a flow sensor is plugged into the monitor it is automatically identified by means of a reflective non reflective label that is read by the monitor s circuitry Three opto isolators are used to emit a light and measure any reflection from the label There are three bands that can reflect or absorb light this enables eight distinct possibilities The opto isolators are driven by OCDRV_0 through OCDRV_2 which drive Q5 Q7 respectively If an opto isolator receives a reflection then the transistor portion will conduct and trigger a comparator output U13 to go low The outputs OCRD 0 OCRD 1 and OCRD 2 will be read by U22 and allow the processor to determine the type of flow sensor connected 3 1 11 Flow Zeroing Reference page 3 of the 2740 03 schematic The zero process begins when the CPU brings the VLV_CNTL line high this biases Q3A on energizing valves V1 and V2 This disconnects the differential pressure transducer U29 via V1 and V2 and the absolute pressure transducer U30 via V2 from the 8 101 Service Manual Rev 01 Board Rev 01 Section 3 patient airway and opens all pressure
28. settings Model 101 Service Manual 27 Section 7 Assembly Exchanges 28 Model 101 Service Manual Rev 01 Rev 01 Section 8 Cat No Accessories Description Monitor English language 6800 00 6800 23 6800 90 420037 420038 420039 Flow Sensors 6717 00 6718 00 6720 00 Power Options 6862 00 400038 400043 400049 600026 Miscellaneous 140084 315107 VENTw Handheld Respiratory Mechanics Monitor Model 101 User s Manual Service Manual VENTw Quick Guide Inservice Video VHS video tape NTSC format U S A VHS video tape PAL format VHS video tape SECAM format Series 3 Pediatric Adult Flow Sensor 10 Box Series 3 Neonatal Flow Sensor 10 Box Series 3 Neonatal Combined CO Flow Sensor 10 Box Battery Case for AA Batteries batteries not included Alkaline Battery 1 5 vdc AA Size Panasonic or equivalent Rechargeable Battery NiMH 7 2V 2 4AH Duracell amp DR30 or equivalent External Battery Charger DR30 Universal Voltage NiMH power line cord not included Power Line Cord 120 vac U S A for External Battery Charger Pole Shelf Mount Kit Carrying Case Model 101 Service Manual 27 Section 8 This page intentionally blank 28 Model 101 Service Manual Rev 01 Section 9 Parts Lists 9 1 6800 00 Final Assembly Model 101 LINE PART NO REV QPA DESCRIPTION 0001 6800 01 02 T MAIN ASS
29. the unit down by pressing the POWER key The Functional Test Procedure is complete 14 Model 101 Service Manual Rev 01 Section 5 Accuracy Tests 5 1 k C XD 09 GT ame 5 2 Rev 01 Equipment Required Calibrated Barometer Adult Flow Sensor PN 6717 01 Neonatal Flow Sensor PN 6718 01 500 cc Calibration Syringe Hans Rudolph 5550 or equivalent 10 cc Calibration Syringe Hans Rudolph Model 5520 or equivalent PN 550032 Flow Leak Test Adapter PN 6935 48 Common Mode Test Adapter PN 6937 48 Pressure Source Penwalt Pneumatic Calibrator Model 65 120 or equivalent Battery Case Cat No 6862 00 AA 1 5 VDC Alkaline Batteries Qty 7 Cat No 400038 Panasonic or equivalent Procedure Install a Battery Case Cat No 6862 00 with seven fully charged AA batteries Cat No 400038 in the Model 101 Press and hold the DATA key then press the POWER key to power up the unit in the engineering menu Verify the AC LED is off and the battery LED is on Press the GRAPH key next until the arrow is beside CALIBRATION then press the DATA key select Read the current barometric pressure from the calibrated barometer Verify Pbar equals the current barometric pressure 2 Connect the 6935 48 Flow Leak Test Adapter to the unit With the stop cock on the FLow Leak Test Adapter open set the airway pressure Paw to 100 110 cmH5O Close the stop cock Verify the airway pressure
30. transducer ports to atmosphere Diodes D16 and D17 are for protection against back EMF from the valves coils FLOW SENSOR CONNECTOR AIR L R AIRWAY PRESSURE TRANSDUCER VALVE 2 PNEUMATIC TUBING VALVE 1 BAROMETRIC PRESSURE TRANSDUCER The pressure transducers are zeroed by adjusting the amplified and conditioned pressure output signals so that each reading reads approximately mid scale 512 counts using a successive approximation algorithm With a reference voltage of 5 0 Volts each count returned by the 10 bit ADC is equal to 4 883 mV Centering the no flow ambient signal to the ADC s mid scale allows the sensor to report both positive and negative airway pressures U8 a Digital to Analog Converter DAC provides the adjustment under microprocessor control The DAC maintains each adjustment voltage obtained during the zeroing process until a new zero cycle is initiated The patient airway pressure transducer is zeroed first by adjusting the UB_DAC_A output of the DAC until the Airway Pressure signal reads mid scale The barometric ambient pressure as sensed by the processor is recorded after the airway pressure zero is completed Next the flow channels are zeroed A non inverting summing amplifier U6A combines two of the DAC s outputs and a constant voltage from equal to the mid scale of the ADC The output voltage produced by the summer is fed into U14 a monolithic instrumentation amplif
31. 138 2741 02 02741 05 220uF 35V 20 ELECTROLYTIC OluF 50V 10 X7R CAPACITOR tuF SOV 10 X7R CERAMIC CAPACITOR 10uF 25V 10 TANTALUM YW 211539 CONNECTOR 6 PIN RCPT RT ANGLE 05 SP 213411 CONNECTOR 40 PIN RCPT PASS THRU DIL STR 213412 CONNECTOR 40 PIN HEADER DIL STR 05 SP Yr 216029 TEST POINT SPRING LOADED 475 MAX SPACER LED FOR 3 LEADS 255 DIA X 185 L SPACER LED FOR 2 LEADS 25 DIA X 2 LONG R2 R9 R13 R1 RA RB R14 C6 C8 C12 C15 C16 C18 C7 C9 C17 C19 C1 C3 CAPACITOR 154072 154079 14 J4 J3 Jt J2 280235 474136 474165 RESISTOR 1k OHM 1 8W 1 RESISTOR 10k OHM 1 8W 1 474166 RESISTOR 100k OHM 1 8W 1 R16 474174 RESISTOR 332 OHM 1 8W 1 R19 R22 R24 474186 RESISTOR 15k OHM 1 8W 1 R18 474220 RESISTOR ZERO OHM 1 4W 5 1206 STYLE 474274 474276 RESISTOR 20k OHM 1 8W 1 1206 STYLE RESISTOR 866k OHM 1 BW 1 1206 STYLE DIODE MMBD914L SWITCHING DIODE MBRS140T3 RECTIFIER 07 482601 LEO YELLOW ROUND 100 SPACING yy 482602 LED GREEN ROUND 100 SPACING Yr 482604 LED BICOLOR RED amp GREEN ROUND 3 LEAD 484558 VOLTAGE REGULATOR LTC1144CSB SW 5 03 04 484572 VOLTAGE REGULATOR LT1129CST 5 3 PIN U3 U7 485532
32. 6823 10 01 FILLER KEYPANEL 0007 6824 27 01 MEMBRANE KEYPANEL MODEL 101 VENTCHECK 0008 6838 10 01 GASKET BATTERY DOOR 0009 6839 10 00 GASKET BATTERY 0010 6855 13 00 TOP COVER WITH SHIELDING MODEL 101 0012 161082 0013 161102 0014 160044 0015 281211 0016 286223 0017 482605 0018 600068 0019 600518 TAPE UHMW POLYETHYLENE 002 THK ADHESIVE RTV162 SILICONE WHITE ALCOHOL ISOPROPYL TECHNICAL GRADE SCREW 2 56 X 1 4L SELF TAPPING BINDING HEAD SCREW 6 32 X 3 8 IN L PAN HD PHILLIPS ST LCD DISPLAY W LED BACKLIGHT amp CONN W GOLD PL RIBBON CABLE 40 PIN RCPT TO RCPT 3 5 IN L BATTERY INTERCONNECTION CABLE 5 PIN 2 3 IN f of ol of of of Rev 01 101 Service Manual 29 Section 9 9 3 2740 01 01 Board Assy Model 101 PART REV DESCRIPTION 161102 0 ADHESIVE RTV162 SILICONE WHITE 2740 03 01 0 SCHEMATIC MAIN BOARD MODEL 101 VENTCHECK 2740 04 XX 0 TEST PROCEDURE MAIN BOARD MODEL 101 2740 17 01 1 MAIN BOARD SUBASSY MODEL 101 VENTCHECK 487128 1 IC DUXLO1D DIFF PRESSURE SNSR 1 IN H20 4 608012 0 CABLE TIE SELF LKG 094W X 8L 1 16 TO 2 B 6837 10 01 1 GASKET CONNECTOR CRADLE MODEL 101 6961 01 01 1 FLOW CONNECTOR AND TUBING ASSY 101 6962 07 12 1 PROGRAM EPROM ASSY SYSTEM 101 VENTCHECK 9 4 2740 17 01 Main Board Subassy Model 101
33. B 10k 2 v 03 1 u24 A 2 3 8105 100 0822 Rg 19 9k 6 R137 10k 4 100 8140 100 KON 6 NAE R135 vRS ia SAWERESS AW DAC 1 R142 10k 20k ae AD822 E ag AD822 8 06k 0 12V e 100 cs R136 C60 C59 0 1uF 12 1k REP R111 10k R112 NEG AVCC2 lt lt IU 100 avec 2 Pee MODEL 101 maw BOARD NOVametrix Cee eee Medical Systems lnc ae Rae GS Drawn Checked 1 Barnes Industrial Park Road fee eT ber Wallingford CT USA 06492 Approved Document Number Code 2140 03 12249 2740 03 00 __ No Date Date Monday July 14 1997 5V 5V yav R40 R41 249k 100k 0 1uF U13B 4 5 RR A 05 1501 0 2N7002 ISOLATOR is 511 ohm 5V 12V O R45 R46 100k 10k U13C 9 14 PEEL 1502 lt OCRD 1 OCORV_1 2N7002 ISOLATOR LM339 511 ohm 5V 12V 5V 0 R48 R49 100k 10k U13D 11 m aa oa ee ME Kocro_2 _2 247002 ISOLATOR R R50 150k 511 ohm gt MODEL 101 MAIN ovametrix 4 EEE Medical Systems pec Drawn Checked 1 Barses fadustrial Pork Rosd ML Wsliiagtor CT USA 06497 2740 03 01 ___ 12797
34. BARO PRESSURE pressure With no pressure applied this will equal the barometric pressure Adjust VR3 so that the BARO ADU reading is about 1000 counts Model 101 Service Manual 19 Section 6 10 12 13 14 15 16 17 18 19 20 21 Barometric Pressure Calibration Press the GRAPH ZERO key Connect the Pennwalt pneumatic calibrator to the Common Mode Test Adapter Adjust the Pennwalt for an output pressure of 50 mmHg Note The pressure settings for the Barometric Pressure adjustments are stated in mmHg not cmH O Use the outer scale on the Pennwalt when setting the pressure to mmHg Adjust VR2 until the ADDED_PRESSURE reading is 50 you may need to readjust VR3 if BARO_ADU becomes greater than 3500 counts Press the GRAPH ZERO key Repeat steps 9 and 10 until the ADDED PRESSURE is within 2 mmHg of the Pennwalt setting Adjust the Pennwalt for an output pressure of 100 mmHg Adjust VR2 until the ADDED_PRESSURE reading is 100 Press the GRAPH ZERO key Repeat steps 13 and 14 until the ADDED PRESSURE is within 1 mmHg of the Pennwalt setting Disconnect the Pennwalt from the Common Mode Test Adapter Press the GRAPH ZERO key Obtain the current Barometric Pressure from the calibrated Barometer Adjust VR3 until the BARO_PRESSURE value matches the Barometric pressure obtained from the calibrated Barometer Press the GRAPH ZERO key Repeat steps 19 and 20 as needed 20 Model 101 Service
35. E TO BE INCLUDED WITH MONITOR REFER TO SHIPPING INSTRUCTIONS A ITEM 4 USERS MANUAL QTY 1 ITEM 19 SCREW COVER BLACK QTY 6 PLACE IN POUCH ITEM 20 POUCH PLASTIC ZIP LOCK GTY 1 ZA LOCATE LABELS APPROXIMATELY AS SHOWN me DO NOT SCA UNLESS OTHERWISE SPECIFIED OMENSIONS ARE IN INCHES mm Lo mue 072 FLOW NOVAMETRIX 10 VENT CHECK MEDICAL SYSTEMS INC WALUNGFORD CT USA 06492 Tha document contains information which is pro pne ary ana the property of Medicol Systems mc ond may nol be reproduced used disclosed in whole or in part without the written consent of Novametrix Medico Systems Inc 5 2ND CONNECT RIBBON CABLE FROM 2740 BOARD TO 2741 J2 SEE DETAIL C ON SHEET 3 2740 BOARD FOR BOTTOM COVER SUBASSY NOTE ORIENTATION 1ST CONNECT RIBBON CABLE TO 2740 4402 gt ed SECURE TOP AND BOTTOM COVERS TOGETHER WHILE SEE DETAIL ON SHEET 2 CAPTURING 2740 BOARD FOR TOP COVER SUBASSY 4 PL 00 NOT OTHERWISE OMENSIONS ARE IN INCHES mm BREAK ALL SHARP 5 E 000000 J101 mr NOVAMETRIX lt MEDICAL SYSTEMS INC gt WALLINGFORD CT USA 08492 ut amun no Cote ery D 2800 01 92 SCALE 3 1 neEFT 006 A MAIN ASSY MODEL 101 VENT CHECK CHECKED Ma d
36. EHIND THIS SURFACE SEE DETAIL B FOR LCD AND TOP COVER SUBASSY bo NOT SCALI TE UNLESS OTHERWISE SPECIFIED OMENSIONS ARE IN INCHES mm BREAK ALL SHARP EDGES MAIN ASSY MODEL 101 VENT CHECK NOVAMETRIX MEDICAL SYSTEMS INC WALLINGFORD CT USA 05492 M z Tha document contains information which is po pnetory and the property of Novometns Medical Systems inc ond may not be reproduced used or in whole or in port without the written consent of Novametria Medical Systems Inc BOTTOM COVER WITH SHIELDING LOCATE SHIELD IN BOTTOM COVER AND SECURE USING ADHESIVE BACKING APPROX AS SHOWN en LOCATE BATTERY GASKET IN BOTTOM COVER WITH ORIENTATION SHOWN SEE DETAIL D FOR BOTTOM SIDE SNAP BATTERY DOOR BATTERY DOOR SUBASSY ONTO BOTTOM COVER DETAIL C LOCATE GASKET ON BATTERY DOOR AND SECURE USING ADHESIVE BACKING APPROX AS SHOWN ILE MAN ASSY MODEL 101 VENT CHECK 00 NO 4 U AESS OTHERWISE SPECIFIED OMENSIONS ARE iM INCHES mm BREAK ALL SHARP EDGES NOVAMETRIX 272 MEDICAL SYSTEMS INC AS WALLINGFORD CT USA 06497 506 cor ere D 6800 191 2 Rak o DETAIL D DRAWN RGG CHECKED 1 18 97 MPPROWD FED nern Ihe Juured inns ahh pro 954 L
37. File 2740 03 00 Sheet 8 p O OE e c Bev TR No By Date Date Monday July 14 1997 3 TEC __ 2 VCHG TP 14 BOT ids 1A SB 02 914 R35 562 ohms C68 10uf Tant 10V 15 BVDD 0927 8115 5 9k 1P16 mem R116 301k THERM Dale Da TP13 mem 07 L11 717 T C57 C66 18uH MBRS140T3 68uf 68uf M Tant Tant C67 16V 16V D8 104 MBRS14073 Tant l L L12 R34 16V 10uH 237k BVDD T 1k ca R37 a 82 914 BZT52 C5V4 3904T UF R38 243 ohm BVDD pe O 150k R39 E 71 5k BVDD BVDD 911 R10 1 1 oy 5 1 A 2727 21 12 11 R117 fk C79 bq2004SN R119 Auf uF 301k Epl ness WIERZE 8 1997 Len peser 122497 File 2740 03 00 te Monday July 14 1997 Novametrix Medical Systems Inc Barnes industrial Past Road Wallingford CT USA 06492 Approved Document Number WER Ge ee 2740 3 a 9 This document contains information which is pro prietary and the property of Novometrix Medical Systems inc ond moy not be reproduced used or disclosed in whole or in part without tha written t of Novornetrix Medical Systems Inc 5V 9 274102XX D6 NOVAMETRIX 274102 Made in U S A gite re rtt 1
38. M and ROM is handled by U27 U28 and U20 Address lines AO A7 are shared with data lines DO D7 U15 decodes the data lines as address lines when needed through the ALE line The digital supply is monitored by U26 if the voltage drops below a certain threshold then the SRST signal will reset the system The SRST line will also bias Q8 off this will assert the RESET line that will reset other chips on the board at the same time that the microprocessor is reset 3 1 6 Serial Communication Refer to page 2 of the 2740 03 schematic Serial communication is handled by U17 the transmit MPU_TXD and receive MPU_RXD lines are converted into RS232 levels by U17 Diodes D13 and D14 are for protection on the processor side of U17 Capacitors C62 C65 are used by U17 for generating the required voltages for the RS232 levels L1 and L2 are high frequency filters for immunity and susceptibility The RS232 signals appear at the rear connector of the unit and at J401 circuit board mounted header connector The COMMPWR line from the microprocessor enables U17 when high when set low U17 is put in sleep mode to conserve power 3 1 7 Audio Refer to page 2 of the 2740 03 schematic Audible tones are generated by LS1 when driven by Q13 The AUD_CLK line from the microprocessor biases Q13 on and off creating the desired tone output from LS1 750KHz clock signal is generated by 031 from the 6MHz system clock This clock input is Model 101 Service Manual 7
39. Manual Hev 01 Rev 01 Section 7 7 1 General This section presents recommended maintenance schedules for the Model 101 and information on general maintenance such as battery replacement disassembly and assembly instructions and system software updates 7 2 Maintenance Schedules The electronic circuits within the Model 101 do not require scheduled calibration or service However in order to maximize battery life the monitor s internal battery should be tested monthly Novametrix recommends the following maintenance schedules Cleaning and Sterilization Perform as required See Cleaning and Sterilization on page 22 Battery and AC Operation Contains information on use of disposable alkaline and rechargeable batteries See Battery and AC Operation on page 22 Functional Tests The test verifies overall functional integrity of the monitor and sensor See Functional Tests on page 13 Accuracy Tests The test verifies the calibration accuracy of the monitor using specified test apparatus See Accuracy Tests on page 15 Electrical Tests These tests contain information on testing the electronic circuits within the Model 101 and should only be performed if the monitor fails to pass the Functional and or Accuracy Tests Only qualified service personnel should attempt to perform the Electrical Tests See Electrical Tests on page 17 At the customer s request Novametrix will provide repair an
40. RAM WR p RAMEN 2 3 4 9 p 13 741000 T4HC00 z KECEWI 777 pp file D 0 7 Novametrix Medical Systems loc 1 Barnes fnduitrial Park Road Wallingford CT USA 06492 lt 010 7 FSV C39 0 01uF lt RAMCS 8255 CS MPU_TXD MPU_RXD F5 D13 p7000 U17 2 C63 0 1u 4 5 C64 0 1u 6 TRIN RX1OUT TRIOUT TRAIN TR20UT 1 RX20UT RX2IN RX EN ON OFF LTC1384 p 2 014 07000 3 1 p 74HC00 18 74HC00 1 C62 X COMMPWR 74HC4024 14 8 74HC00 MBRS340T3 144 AUD_GLK lt lt 1K A RAMEN Cradle Connector COMM Battery P 12V R143 150 ohm LSI 09 013 247002 P D BOARD tH Jan 8 1997 MRL Mt 2740 03 00 Rev R No Date Date Monday July 14 1937 Novametrix Medical Systems Inc 1 Bernes Industrial Park Road Wallingford CT USA 06402 Approved Document Number AJE 8 2749 103 nt Sheet 2 VBATT THERM OCRD BATT VALVE RETURN 12V KVALVE_SUPPLY lt iswoc D System Interface CPU POWER PLANE FSV L5
41. SR 474282 1 RESISTOR 4 64K OHM 1 8W 1 1206 STYLE SR 474285 1 RESISTOR 255 OHM 1 8W 1 1206 STYLE SURF 474287 6 RESISTOR 200K OHM 1 8W 1 1206 STYLE SUR 474288 2 RESISTOR 499 OHM 1 8W 1 1206 STYLE SURF 474289 1 RESISTOR 8 06K OHM 1 8W 1 1206 STYLE SR 474290 1 RESISTOR 12 1K OHM 1 8W 1 1206 STYLE SR 474291 1 RESISTOR 34K OHM 1 8W 1 1206 STYLE SURF 474293 1 RESISTOR 40 2K OHM 1 8W 1 1206 STYLE SU 475050 3 POTENTIOMETER 20K OHM 10 M TURN ADJ 475052 1 POTENTIOMETER 1K OHM 10 TOP ADJ M TURN 481045 1 DIODE ZENER BZT52 C5V1 5 1V 481546 10 DIODE MMBD914L SWITCHING SURFACE MOUNT 481547 1 DIODE BAT54 HOT CARRIER SCHOTTKY SURFACE M 481549 2 DIODE MBRS140T3 RECTIFIER SURFACE MOUNT 481552 3 DIODE MBRS340T3 SCHOTTKY 40V 3A SURFACE 481555 2 DIODE MMBD7000LT1 DUAL SWITCHING SURFACE M 483019 2 TRANSISTOR MMBT2907ALT1 PNP SOT 23 SURFAC 483020 1 TRANSISTOR FMMT717 PNP SOT23 CASE SURFACE 484060 3 TRANSISTOR MMBT3904T NPN SURFACE MOUNT 485532 6 TRANSISTOR 2N7002T1 N CHAN ENHAN MODE SURF 485543 1 TRANSISTOR SI9939DY MOSFET N CH amp P CH 2 486042 1 AT93C66 10SC SERIAL 4K EEPROM 8 SR 486306 1 IC MCM60L256AF 10 32K X 8 CMOS SRAM 100NS 486317 2 IC MC74HCOOAD QUAD 2 IN NAND GATE SURFACE 486323 1 IC SN74HC573DW OCTAL D TYPE LATCH W 3 ST OU 486349 1 IC MC74HCO8AD QUAD 2 INPUT AND GATE 14 PIN 486351 1 IC S80C196KB 16 16 BIT MICROCONTROLLER 486353 1
42. Section 3 Main Board required by the processor for generating the audio tones of AUD_CLK The RESET line on U31 prevents any audio from inadvertently being generated by disabling the chip during power up and power down Audio is used for low battery only There are no other alert outputs in this monitor 3 1 8 Interface Refer to page 3 of the 2740 03 schematic The microprocessor interfaces to the display key panel and LED s on the 2741 board through U22 U22 also interfaces to the optical isolators located on the 2740 board which determine which type of flow sensor is installed adult neonatal or neonatal CO2 The microprocessor communicates to U22 via the AO address lines DO D7 data lines 8255_CS RD and WR lines The PAO PA7 lines are a buffered data bus which go to the 2741 board where they are used as latched I O The PB5 PB7 lines decode the appropriate latch on the 2741 board for display and LED indicator output and key panel input and the PC5 PC7 lines drive the opto isolators on the 2740 board 3 1 9 Analog Control Signals Refer to page 5 of the 2740 03 schematic The serial to DAC digital to analog converter U8 contains four independent DACs for control signals in the system 1 5 volt reference _1_5 is used as the reference input to all four DACs via U12A an amplifier with a gain of 2 The clock DAC_CLK load DAC_LD and data DAC_SDI lines are directly controlled by the microprocessor DAC_A and DAC_B s
43. UR 481546 2 DIODE MMBD914L SWITCHING SURFACE MOUNT 481549 1 DIODE MBRS140T3 RECTIFIER SURFACE MOUNT 482601 1 LED YELLOW ROUND 100 SPACING PC MOUNT 482602 1 LED GREEN ROUND 100 SPACING PC MOUNT 482604 1 LED BICOLOR RED amp GREEN ROUND 3 LEAD PC 484558 1 VOLTAGE REGULATOR LTC1144CS8 SW CAP 8 PIN 484572 2 VOLTAGE REGULATOR LT1129CST 5 3 PIN SURFAC 32 Model 101 Service Manual Hev 01 Rev 01 Section 9 PART NO DESCRIPTION 486314 1 IC MC74HC541DW OCTAL BUFFER LINE DRVR RCVR 486323 2 SN74HC573DW OCTAL D TYPE LATCH W 3 5 OU 487125 1 LT1302CS8 DC DC CONVERTER 8 PIN SURFAC 515087 1 FUSE W FUSEHOLDER 125V SLO BLO SUBMIN 7 6935 48 00 Test Fixture Flow Leak Test LINE PARTNO REV DESCRIPTION 0002 6653 72 01 1 CONNECTOR PLUG MULTIPORT 0003 8921 10 00 0 DUAL TUBING 96 IN LONG FLOW SENSOR 0010 160038 0 SOLVENT 50 CYCLOHEXANONE 8 50 TETRAHYDROFUR 0012 250111 1 FITTING QIK DISC FEM LUER 1 8 ID TUBING NYLON 0013 250149 1 FITTING 1 16 TO 1 8 NYLON 0014 250150 1 STOPCOCK 3 WAY WITH MALE LUER ADAPTER 0015 315095 1 SYRINGE 5 DISPOSABLE WITH LUER LOK 0016 608106 0 TUBING VINYL 125 3 2 ID 250 6 4 OD 68 Model 101 Service Manual 33 Section 9 This page intentionally blank 34 101 Service Manual Rev 01 Sect
44. Y MODEL 101 VENTCHECK 0002 6800 04 0 TEST PROCEDURE SYSTEM MODEL 101 VENTCHECK 0003 6800 09 PO 0 OVERALL WIRING DIAGRAM MODEL 101 VENTCHECK 0004 6800 23 02 1 USERS MANUAL MODEL 101 VENTCHECK 0005 6800 33 0 ASSY PROCEDURE SHIPPING INSTRUCTIONS MODEL 101 0006 6800 40 00 0 DESIGN DOCUMENTATION MODEL 101 VENTCHECK 0007 6800 43 0 SHEET MODEL 101 VENTCHECK 0008 6800 75 02 0 MASTER RECORD MODEL 101 VENTCHECK 0009 6835 32 00 1 LABEL PATIENT ISOLATION MODEL 101 0010 6874 32 00 1 LABEL SERIAL NO 8 BATTERY ALIGNMENT 0011 6877 32 00 1 QUICK GUIDE LABEL BOTTOM COVER MODEL 101 0012 6886 13 00 1 SHIPPING HAND HELD MONITOR 0013 6920 13 00 1 SHIPPING CARTON ACCESSORIES HAND HELD MONITOR 0014 6965 32 00 1 REGULATORY LABEL UL MARK FOR USA 8 CANADA 0015 9026 32 01 1 LABEL MANUFACTURED IN USA 0019 240059 0 5 COVER BLK PVC 25DIA X 06T ACRYLIC 0020 315033 0 POUCH PLASTIC ZIP LOCK 4 X 6 2 MIL THICK 9 2 6800 01 Main Assembly Model 101 LINE PARTNO REV QPA DESCRIPTION 0001 2740 01 01 MAIN BOARD ASSY MODEL 101 0002 2741 01 00 INTERFACE BOARD ASSY MODEL 101 VENTCHECK 0003 6680 13 01 BOTTOM COVER W HOLE AND SHIELDING HAND HELD 0004 6685 16 00 BATTERY DOOR HAND HELD ENCLOSURE 0005 6773 10 00 SHIELD MYLAR BOTTOM COVER MODEL 101 0006
45. a property of Novornatna Medical nc and may be reproduced used of dis lored ai of in part mihow the entten consent of No orneteia Systema inc SNAP FLOW SENSOR CONNECTOR INTO PC BOARD SLOTS APPROX AS SHOWN LOCATE CONNECTOR CRADLE GASKET OVER 2739 J101 WHILE NOTING ORIENTATION CABLE TIE U29A PREP CABLE TIE 166 B XX 10 2969 12n BEND SENSOR DOWN APPROX 90 AT LEAD TRANSITION POINT SECURE FLOW SENSOR CONNECTOR TO PC BOARD USING CABLE TIE APPROX AS SHOWN SEE DETAIL A FOR NOT BLOCK VENT HOLE OR TUBING PORT WITH ADHESIVE 2 PER SIDE SEE PNEUMATIC DIAGRAM FOR TUBING POLARITY amp TUBING CONNECTIONS STRETCH TUBING ID FIRST AND THEN SECURELY HOLD WHILE PRESSING TUBING ONTO PORT REF LEAD TRANSITION POINT 02 PN DESCRIPTION REF DES SCHEMATIC MAIN BOARD MODEL 101 2740 04 TEST PROCEDURE MAIN BOARD MODEL 101 2 MAIN BOARD SUBASSY MODEL 101 96837 10 GASKET CONNECTOR CRADLE MODEL 610 amp 101 FOR 2739 4101 FLOW CONNECTOR amp TUBING ASSY MODEL 101 PROGRAM EPROM ASSY SYSTEM 021 ADHESIVE RTV162 SILICONE WHITE FOR U29A IC DUXLO1D DIFF PRESSURE SENSOR U29A F CABLE TIE SELF LOCKING 094 WIDE x 8 LONG FOR FLOW CONNECTOR SECURE SENSOR TO BOARD WITH ADHESIVE DO NOT COVER ANY COMPONENTS OR U29 MOUNTING HOLES FLOW
46. all mount adapter or installed in the cradle option Battery charging is controlled by U11 a frequency modulated fast charge controller U11 monitors temperature voltage and time throughout the charging process to safely and effectively charge the internal battery The charger is configured to terminate charging using the AT At delta temperature delta time method of charge termination Charging is maintained at the C 4 600mA rate while current to the battery is controlled by 011 02 012 and the MOD output of U11 Q2 provides base drive for Q11 while 012 serves to shut Q11 off very quickly on a cycle by cycle basis allowing the large currents required for charging to pass through Q11 which is a surface mount SOT 23 package capable of 500mW power dissipation Temperature is monitored using the battery s internal thermistor R115 R116 and R118 Resistors R115 R116 and R118 set the AT At charge termination parameter to 1 per minute R39 and R106 set the maximum temperature for charge termination a safety override to 45 Battery charging is initiated in one of two ways Either by applying 13 VDC to VCHG therefore providing power B VDD to U11 or by inserting a rechargeable battery into the battery compartment provided external power is available Resistors R34 and R36 set up a divider which determines whether the installed battery is within the correct voltage range for charging BVDD is regulated by D1 a 5 1V zener diode while R35 keeps
47. arly depleted 7 4 1 Battery Installation To install or remove the battery grasp the finger grips on each end of the Model 101 battery cover Squeeze together and pull so that the hinged cover opens The battery is keyed and can be installed in only one orientation see illustration inside battery compartment The contacts should go in first and be located toward the top left of the monitor Close the battery cover before operating the monitor Connect only Novametrix approved devices Swing battery Hinged Battery Compartment Cover cover open Finger Grips 7 4 2 External Battery Charger An optional external charger for the NiMH rechareable battery pack is available The external charger allows the battery to be recharged outside of the Model 101 monitor The external charger is for use with the rechargeable NiMH battery only n a non patient area connect the external charger to an AC source Remove the battery from the Model 101 and insert it into the external charger The battery will be fully charged in approximately 4 5 hours e Refer to the instructions supplied with the charger for additional information WARNING The external battery charger should NOT be operated near or in close proximity to patients and or other medical equipment in operation Rev 01 Model 101 Service Manual 23 Section 7 Battery AC Operation 7 4 3 Features Connector Located on the enclosure rear is a six pin modular
48. at power up the software level is shown on the third line as 101 where is the software version Some VENTW monitors were produced with the statement Use only Novametrix approved devices 13 VDC 1A located on the label at the Flow Sensor Input Connector This erroneous statement does NOT apply to the VENTV monitor and should be ignored 2 Model 101 Service Manual Rev 01 Rev 01 Section 2 Introduction The VENTW Handheld Respiratory Mechanics Monitor Model 101 is shown below Connect Series 3 Flow Sensor Neonatal Pediatric Adult Sensor Sensor 6718 6720 6717 Features Quick Guide Connector Model 101 Service Manual 3 Section 2 Keypad Controls and Indicators 2 1 Keypad Controls and Indicators 2 3 4 B A Key Action Function 1 POWER Press Turns VENTw on off 074 Display Graph Screens 2 Press Additional presses causes VENTV to sequence through available Graph Screens Display Data Screens 3 77 Press Additional presses causes VENT to sequence through available Data Screens Press Turns display backlight on off NE 4 A Press amp Adjusts contrast viewing angle of display Hold 1 step sec Illuminated if powered from battery A Green battery charged o Yellow flashing slowly capacity getting low Red flashing quickly exhausted in 10 15 min B NEO None Illuminates when a Neonatal se
49. at all of the Graph screen is functioning properly VOLUME GRAPH Automatically scaled Breath by breath reporting d d 4 510 2 MU 6 8 Remove the flow sensor from the unit Verify the unit displays SENSOR DETECTED INSERT FLOW SENSOR Connect the 6718 01 Neonatal Flow Sensor to the unit under test Verify a NEW SENSOR DETECTED TYPE Neonatal is temporarily displayed Verify the NEO LED illuminates Remove the flow sensor Press the Xx lamp key and verify that the backlite shuts off Press the XX lamp key again and verify the backlite turns back on Model 101 Service Manual 13 Section 4 12 13 14 15 16 17 18 19 20 Press and hold the 55 lamp key and verify that the contrast is adjustable Set the contrast to a desirable level Power the unit down by pressing the POWER key Press and hold the DATA key then press the POWER key to power up the unit in the engineering menu Verify the AC LED is off and the battery LED is on Press the GRAPH next key until the arrow is beside TEST LEDs Press the DATA select key to start the LED test Verify the LED that corresponds to the displayed LED test is ON LED Test LED On LED Color Neo Neo Green LED TEST Battery Red Battery OK Battery Green Low Battery Battery Yellow Press the GRAPH next key until the arrow is next to EXIT Press DATA select to return to normal operating mode Power
50. bration 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 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 In Connecticut call Collect 203 265 7701 FAX 203 284 0753 http www novametrix com Email 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 1998 2000 Novametrix Medical Systems Inc 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 translated transcribed or transmitted in any form or by any means without prior explicit written permission from Novametrix Medical Systems Inc 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 Swindon Wilts SN6 STD
51. ced 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 is 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 a level appropriate to your protocol and budget requirements Please contact Technical Support for information on these additional programs a
52. channel X10 ACH_2 Airway flow channel X100 ACH_3 Airway flow channel X1000 AWPRESS Airway pressure zero ABPRESS Barometric pressure FSV CPU power plane measurement VBATTADC Battery voltage measurement The digital lines are listed below DIGITAL LINES DESCRIPTION 8255_CS Chip select for programmable peripheral interface U22 DAC_SDI Serial data input line for U8 and U25 DAC_LD Load assert line for 08 DAC_CLK Clock signal for U8 OCDRV_0 Drive signal for opto isolator 1 OCDRV_1 Drive signal for opto isolator 2 6 Model 101 Service Manual Rev 01 Board Rev 01 Section 3 OCDRV_2 Drive signal for opto isolator 3 POWER_HOLD Signal line asserted low for powering down the monitor Valve control line used for zeroing pressure sensors 1 2 of the system clock output 6MHz Serial communication transmit line Serial communication receive line Clock input signal for audio output pulse width modulated signal Erasable EPROM data output signal Clock output signal for display back light Erasable EPROM chip select Enable sleep control for RS232 Transceiver U17 Audio drive output signal Address line enable A0 A7 Control line for RAM and ROM access Write enable Read enable Crystal Y1 sets the operating frequency at 12MHz System software is stored in U21 a flash ROM device and system RAM in U19 Decoding for the RA
53. contact which provides a power input for unit operation and battery charging when connected to Novametrix accessories This connector meets the patient safety requirements of the following agencies IEC 601 1 UL544 and TUV 24 Model 101 Service Manual Rev 01 Assembly Exchanges Section 7 7 5 Assembly Exchanges The disassembly instructions below are intended as a guide to enable component exchanges if necessary There are no user serviceable parts inside Disassembly should be performed by qualified service personnel only CAUTION The Model 101 contains static sensitive devices Be sure to follow proper grounding procedures when handling the internal components to avoid damage from static discharge 7 5 1 Disassembling the Monitor 1 Ensure that the monitor is OFF Remove the battery pack 2 Turn the monitor upside down and remove the four cover screws from the bottom cover cover screws mum g 3 Carefully lift the rear cover from the monitor The separate assemblies of the monitor can now be removed 4 Liftthe Main Board and disconnect ribbon cable from the Interface Board by grasping the connector not the cable and gently rocking from side to side to loosen Be careful not to bend any pins when pulling the connector off of the header strips I LI E B main board ribbon cable side view Rev 01 Model 101 Service Manual 25
54. d calibration services under terms of a Service Contract Contact the Novametrix Service Department for contract details Model 101 Service Manual 21 Section 7 Cleaning and Sterilization 7 3 Cleaning and Sterilization Follow the cleaning and sterilization instructions listed below to clean and or sterilize the monitor and its accessories CAUTION The airway adapter is designed for single patient use Sterilizing may affect system performance Turn the monitor off and disconnect from any other devices before cleaning Do not immerse the monitor Do not attempt to sterilize the monitor The monitor can be cleaned and disinfected with solutions such as a 70 isopropyl alcohol 2 glutheralhyde or 10 bleach solution Then wipe down with a water dampened clean cloth to rinse Dry before use Treat Series 3 Flow Sensors in accordance with hospital protocol for single patient use items 7 4 Battery and AC Operation The Model 101 can be powered from seven AA disposable alkaline batteries or a rechargeable battery Battery capacity is shown in the chart below Times may be reduced in colder temperatures or with power cycling operation with the backlight off may slightly increase these times Any batteries used with the 6862 00 case cannot be charged it is for use with disposable type batteries only Standard Optional AA alkaline batteries SRA ZE battery NiMH 7 2 vdc Power Source Capacity continuous
55. e 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 Model 101 Service Manual 9 Section 3 Main Board seen as a negative pressure P2 gt P1 With a source voltage of approximately 5 0V the sensor transforms this pressure difference into an electrical signal with a nominal absolute magnitude of 50 mV Full scale Output This signal is conditioned and amplified by U14 which is a monolithic Instrumentation Amplifier A The flow IA U14 also offsets the signal to the mid range of the ADC obtained during the zeroing process A positive pressure difference inspiratory flow creates a signal above the offset approximately 1 25 to 2 5V A negative pressure difference expiratory flow becomes a 1 25 to signal The nominal gain of U14 is set by fixed resistor R59 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 10 inH5O the gain of the amplifier is set to give an ADC count of 3498 The signal out of the flow U14 is taken through a two pole low pass filter U7B with a 31Hz cutoff frequency to remove unwanted high frequency electronic noise before it is passed on to the four gain stages U4 and U5 The four flow differential gain amplifiers provide signal gains of 1 ACH_0 10 ACH_1 100 ACH_2
56. gh the sensing bridge by amplifier U7A Instrumentation amplifier IA U23 conditions this signal to correspond to the current barometric pressure which is set by adjusting VR2 for span and VR3 for offset The nominal gain of this amplifier is 68 75 The output signal from U23 appears as an input to both the 10 bit ADC and a second IA U24 924 provides gain adjustment via VR4 and offsets the output signal from the barometric amplifier to mid scale during the zeroing state This is handled by the AW DAC line from U2A page 5 of the 2740 03 schematic the output is then fed to the low pass filter circuit of U12B The nominal gain of the airway pressure amplifier is 2 1 This signal connects to the P1 proximal to the patient side of the differential pressure transducer during monitoring and provides patient airway pressure sensing AWPRESS 10 woael 101 Service Manual Rev 01 Interface Board Section 3 3 2 Interface Board 3 2 1 Key panel Interface Refer to page 1 on 2741 03 schematic The key panel keys are monitored by the system through latch U4 When any key is depressed the associated pull up resistor R9 R13 is brought low and the appropriate line will appear as a low on the PDO PD7 line The latch is read U22 from the main board lines PDO PD7 when the 0xF800 line is asserted 3 2 2 Display interface Refer to page 1 on 2741 03 schematic Communication to the display is handled by latches U1 and U2 these in turn are controlled b
57. h 14 1998 00 SEE NOTE 1J NOTES 1 ASSY PROCEDURE A CUT DUAL TUBING ITEM 3 APPROXIMATELY AS SHOWN AND SPLIT ALONG THE ENTIRE LENGTH B ON CONNECTOR END ONLY DIP END OF TUBING WITH BLUE STRIPE IN 50 50 MIX OF THF CYCLOHEXANONE ITEM 10 FOR 1 SECOND BLOT END OF TUBING ON ABSORBENT TOWEL TO DRAW SOLVENT OUT OF TUBING BORE AND INSERT INTO CONNECTOR ITEM 2 NOTE ORIENTATION REPEAT PROCEDURE FOR CLEAR TUBING AND ALLOW TO DRY CONNECT DUAL TUBING TO THE T CONNECTOR FITTING ITEM 13 PRESS 1 4 DIA TUBING ITEM 16 ONTO FITTING INSERT QUICK DISCONNECT FEMALE LUER FITTING ITEM 12 INTO 1 4 DIA TUBING SECURE STOPCOCK ITEM 14 TO QUICK DISCONNECT FEMALE LUER FITTING SECURE SYRINGE ITEM 15 TO STOPCOCK PERMANENTLY MARK PART NO INCLUDING CURRENT REV ON CONNECTOR APPROX AS SHOWN c r O mmoo TITLE DO NOT SCALE UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN INCHES BREAK SHARP ES TEST FIXTURE FLOW LEAK 240 GENERATION NOVAMETRIX MEDICAL SYSTEMS INC WALLINGFORD CT U S A 06492 BENE ict dee SIZE DRAWING NO CODE REV pee i 6935 48 00 ami Tha document contains information which is pnetory ond the property of Nowometrin Medicol Systems inc Shoe De reproduced us used or disclosed in whole or in part without the written consent of Novarmelrix Medical Systems Inc GRAPHIC LCD
58. ier which takes the differential output of the pressure transducer U29 and adds an offset equal to the reference voltage input DAC outputs UB_DAC_A and UB_DAC_B serve to provide the flow channels with a fine and a course adjustment The result from each channel is stored in SRAM and used as an offset in the flow calculations Valves V1 and V2 are then de energized reconnecting the pressure transducers with the patient airway 3 1 12 Flow Circuitry Reference page 6 of the 2740 03 schematic Differential Pressure Transducer U29 is a silicon based piezoresistive bridge with four active elements When pressure is applied between transducer ports P1 and P2 a differential output voltage proportional to the applied pressure is produced The full scale input pressure range for the transducer is 0 to 4 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 P2 gt P1 are also available The transducer is temperature compensated at 25 degrees Celsius and designed to be driven by a constant current source U6B In the normal system operating mode all valves are de energized Transducer ports 1 and P2 are connected to the patient airway As air flows through the flow sensor a pressure difference between and P2 is created This signal is dependent on both the magnitude and the direction on the air flow The greater the flow volume th
59. ion 10 Drawings and Schematics VENTv Model 101 Respiratory Mechanics Monitor Below is a list of schematics and drawings for the Model 101 Cat No 6800 00 Drawing No Title Sheets 6936 Differential Test Adapter 1 6937 Common Mode Test Adapter 1 6935 Test Fixture Flow Leak 1 6800 Overall Wiring Diagram 1 6800 Flow Monitor Vent Check 1 6800 Main Assembly Model 101 3 2740 Main Board Assembly 2740 Main Board Schemaiic 9 2741 Interface Board Assembly 1 2741 Interface Board Schematic 2 Rev 01 101 Service Manual 35 z PARTS LIST NOTES NUM PART DESCRIPTION 1 SEPARATE THE DUAL TUBING 2 SOLVENT BOND THE DUAL TUBING TO THE 6653 72 1 6653 72 FLOW SENSOR CONNECTOR ADULT USING A 50 50 MIX OF THF AND CYCLOHEXANONE 2 8921 10 DUAL TUBING 2 5 LENGTH NOVAMETRIX MEDICAL SYSTEMS INC IRA WING 6936 48 DIFFERENTIAL TEST ADAPTER Michael Cassarino REY pm March 14 1998 00 1 6653 72 2 8921 10 3 250134 4 250114 PARTS LIST DESCRIPTION FLOW SENSOR CONNECTOR ADULT DUAL TUBING 2 5 LENGTH Y FITTING TUBING 1 16 ID x 1 NOTES 1 SEPARATE THE DUAL TUBING 2 SOLVENT BOND THE DUAL TUBING TO THE 6653 72 USING A 50 50 MIX OF THF AND CYCLOHEXANONE 3 ASSEMBLY THE REMAINING PIECES AS SHOWN ABOVE NOVAMETRIX MEDICAL SYSTEMS INC IRA WING 6937 48 COMMON MODE TEST ADAPTER REV Michael Cassarino pid Marc
60. nd services Focus Series Technical Training Seminars Test Equipment and Test Kits Service Contract Parts Insurance Plans On Site Technical Support Demand Services including Flat rate parts exchange Flat rate return for repair Time and Material Full warranty discounted replacement sensors viil Model 101 Service Manual Rev 01 Rev 01 Section 1 Safety The VENTW Handneld Respiratory Mechanics Monitor Model 101 is electrically isolated Patient leakage current flowing from the instrument to ground is limited to less than 10 uA Keep the VENTW and its accessories clean Do not operate the VENTW when it is wet due to spills or condensation Connect only Novametrix Series 3 Flow Sensors to the VENTW For maximum performance keep the pressure sensor ports oriented upward and keep the sensor clear of moisture and secretions by proper breathing circuit maintenance Connect the sensor first to the VENTW and then to the patient breathing circuit in order to limit circuit volume loss and to avoid excessive moisture build up in the flow sensor tubing VENTW has electrically isolated inputs Patient leakage current flowing from the instrument to ground is limited to less than 10 WA at 120 V 60 Hz Patient isolation is greater than 10 MQ 2500V rms at 60 Hz Where electromagnetic devices i e electrocautery are used patient monitoring may be interrupted due to electromagnetic interference Electromagnetic fields up to 3 V
61. nsor is connected 2 2 Symbols Symbol Description Patient Isolation Identifies patient isolation connection as type BF 4 Model 101 Service Manual Attention Consult manual for detailed information Rev 01 Rev 01 3 1 Section 3 Theory of Operation Main Board 311 Power Supply Refer to page 4 of the schematic 2740 03 An external power source can be connected to J403 to power the monitor and charge a rechargeable battery only Novametrix approved rechargeable batteries and chargers should be used with the model 101 The internal battery connects to the cathode of D11 fuse F1 provides overload protection Since the monitor has the possibility of being powered by the internal battery or an external charger diodes D4 and D11 isolate each of these sources from one another 3 1 2 Reference Voltages Refer to page 5 of the 2740 03 schematic A 2 5 volt reference AVCC_2 is generated by U10 and buffered by This voltage is amplified by U1B and 1 and supplies a 5 volt line AVCC The 2 5 volt reference is divided down by resistors R6 and R7 buffered by U2B to supply a 1 5 volt reference A_1_5V A negative 2 5 volt reference NEG_AVCC_2 is generated by U9B and Q9 which are set up as a unity gain inverting amplifier fed by the 2 5 volt reference AVCC_2 3 1 3 Battery Charger Refer to page 9 of the 2740 03 schematic The internal NiMH battery will charge when the monitor is connected to the DC w
62. o enter the Calibration screen Note The second line of the calibration screen Paw has 2 parameters They are in order PAW ADU The A D counts reading for the airway pressure channel PAW The airway pressure in cmH5O 1 Press the GRAPH ZERO key 2 Connect the Common Mode Test Adapter to the unit and to the Pennwalt Adjust the Pennwalt to 90 cmH5O Note The pressure settings for the Airway Pressure adjustment is stated in cmH5O Use the Inner scale on the Pennwalt when setting the pressure to cmH5O Adjust until the PAW reading matches the Pennwalt reading of 90 20 Press the GRAPH ZERO key 5 Repeat steps and 4 until the PAW reading is within 0 5 2 as read from the Pennwalt meter 6 Disconnect the Common Mode Test Adapter 18 Model 101 Service Manual Rev 01 Barometric Pressure Calibration Section 6 6 2 3 Differential Pressure Calibration Co NEL SOY OL X 00 M Note The calibration screen displays 2 columns of values for the x1 x10 x100 and x1000 chan nels of the differential pressure sensor They are in order ACTUAL_CNTS The actual A D counts for the respective channel The difference between the actual A D counts and the A D DIFF_CNTS counts at the zero point Connect the 6936 48 Differential Test Adapter to the 2740 01 board Press the GRAPH ZERO key Connect the Pennwalt to the positive pressure port blue tube Adjust the Pennwalt to 11 gt
63. ocument contans intarmation ich poetney and the property of Koworetriu Systeme inc and may not t reproduced used or m whole or in part wahou t tha entien consent of Novarnetr Madcat Systems ine ATTACH MEMBRANE KEYPANEL TO TOP COVER USING ADHESIVE BACKING BEND RIBBON CABLE amp GROUND STRAP DOWN TO REAR OF KEYPANEL AND ALLOW TO SPRING BACK ees 550 REF 57 BEND END OF GROUND STRAP TO EDGE OF KEYPANEL amp CREASE INSTALL LCD DISPLAY NOTE ORIENTATION SECURE LCD DISPLAY TO TOP COVER 4 PL APPLY A BEAD OF RTV COMPLETELY AROUND GROUND STRAP AND RIBBON CABLE INSURING THAT ALL VOIDS ARE FILLED CURE AT ROOM TEMPERATURE FOR 24 HOURS INSTALL KEYPANEL FILLER FROM FRONT 350 030 DETAIL B n VENT SECURE BATTERY CABLE AND KEYPANEL GROUND STRAP 19 BATTERY CABLE WIRES NOT SHOWN 5 8 IN X 5 8 IN COVER J4 PINS WITH TAPE APPROX AS SHOWN DO NOT COVER E19 CONDUCTIVE AREA TOP COVER WITH SHIELDING CLEAN KEYPANEL RECESS WITH ISOPROPYL ALCOHOL AND ALLOW TO DRY DETAIL A SEE DETAIL E FOR BOARD SUBASSY CONNECT RIBBON CABLE FROM KEYPANEL 2741 J3 SECURE 2741 BOARD TO TOP COVER 4 PL CONNECT BATTERY CABLE TO 2741 J4 DRESS WIRES TO THE RIGHT APPROX AS SHOWN TUCK EXCESS WIRES DOWN AND BETWEEN 2741 BD amp BATTERY CONNECTOR BATTERY CABLE WIRES MUST BE KEPT B
64. rify the NEO LED illuminates and the Volume waveform screen is then displayed Connect the Neonatal Flow Sensor to the 10cc Calibration Syringe Pump the syringe at approximately 40 cycles per minute one stroke every one and one half second Press the DATA key to display the Flow Volume screen repeated key depressions may be required Verify a VTi and VTe of 10ml 2 ml Remove the flow sensor Power the unit down by pressing the POWER key The Accuracy Test Procedure is complete 16 _ Model 101 Service Manual Rev 01 Rev 01 Section 6 Electrical Tests 6 1 Equipment Required k Digital Multimeter Fluke model 8840A or equivalent Oscilloscope Tektronix model 2236 or equivalent Pneumatic Calibrator Pennwalt Model 65 120 or equivalent Calibrated Barometer Flow Leak Test Adapter PN 6935 48 Differential Test Adapter PN 6936 48 Common Mode Test Adapter PN 6937 48 Adult Flow Sensor PN 6717 01 Neonatal Flow Sensor PN 6718 01 500cc Calibration Syringe Hans Rudolph Model 5550 or equivalent 10cc Calibration Syringe Hans Rudolph Model 5520 or equivalent PN 550032 6 2 Procedure 6 2 1 Power Supplies 1 With the monitor off remove the bottom cover to expose the internal circuit boards Refer to Disassembling the Monitor on page 25 2 Measure the following voltages Use TP4 as ground reference Signal Name Location Voltage Tolerance
65. tricts this device to sale distribution or use by or on the order of a licensed medical practitioner Electrical Shock Hazard Always turn the monitor off before cleaning Do NOT use a damaged monitor Do NOT use a damaged flow sensor Do NOT immerse the monitor or sensors in liquids Do NOT sterilize the monitor or the sensors No user serviceable parts inside Refer servicing to qualified service personnel e Operate at temperatures between 10 C to 40 C 50 104 lt 90 relative humidity non condensing e Avoid storing the monitor at temperatures less than 20 or greater than 455 4 For 2131 F NOTES Indicates points of particular interest or emphasis for more efficient or convenient operation The VENTV operates with Novametrix Series 3 Flow Sensors only VENTV performs an automatic zero self calibration periodically and as needed During this time monitoring is interrupted for less than three seconds The automatic zero can be manually initiated by simultaneously pressing the DATA and GRAPH keys After changing the sensor from Adult to Neonatal while the VENTV is operational wait 30 seconds then perform an automatic zero This product and its accessories which have patient contact are free of latex The C5y C Compliance Ratio neonatal parameter is not supported To determine the VENTW software version turn the monitor on During the self test performed
66. y U22 on the main board U1 is enabled by the oxF806 line and handles the display data lines DS0 DS7 The remaining control lines are handled through U2 and the OxF807 line 3 2 3 LED control Refer to page 1 on 2741 03 schematic The LEDs on the front panel display are controlled by latch U2 and the OxF807 line LEDs D1 and D2 are bicolor LEDs that are controlled by two lines each D3and D4 are unicolor LEDs 3 2 4 Power Supplies Refer to page 2 on 2741 03 schematic The VSWDC supply from the main board is regulated to a 5 volt supply by U3 a VALVE_SUPPLY supply by U7 and 12 volt supplies by U5 and U6 U7 is used as a separateS volt regulator for the main board valves The other supplies are connected to the main board through J2 Rev 01 Model 101 Service Manual 11 Section 3 Interface Board 12 Model 101 Service Manual Rev 01 Section 4 Functional Tests 4 1 gt 4 2 10 11 Rev 01 Equipment Required Adult Flow Sensor Cat No 6717 01 Neonatal Flow Sensor Cat No 6718 01 Battery Case Cat No 6862 00 AA 1 5 VDC Alkaline Batteries Qty 7 Cat No 400038 Panasonic or equivalent Procedure Inspect the unit for cosmetic defects verify no damage Install the Battery Case loaded with seven good AA Alkaline batteries Press the POWER key to power up the unit Connect the 6717 01 Adult Flow sensor to the unit Breathe into the flow sensor Press the GRAPH key and verify th

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