Page 1 Corometrics 170 Series ® SERVICE MANUAL MANUAL P/N 2000947-004 REV. C...
Page 3 Corometrics 170 Series ® SERVICE MANUAL MANUAL P/N 2000947-004 REV. C...
Page 4 Corometrics and Marquette are registered trademarks of GE Medical Systems Information Technologies. GE is a registered trademark of General Electric Company. All other product and brand names are trademarks or registered trademarks of their respective companies.
Page 5: Table Of Contents
Turning the Monitor On ..........4-7 Revision C Corometrics 170 Series 2000947-004...
Page 6 Dual Heart Rate Test (Non-Pattern) ........6-24 Corometrics 170 Series...
Page 7 Preventative Maintenance Inspection ........9-5 Revision C Corometrics 170 Series 2000947-004...
Page 8 Block Diagrams........... . . 11-19 Corometrics 170 Series...
Page 9: Safety
Chapter 1 Safety The information presented in this section is important for the safety of both the patient and operator and also serves to enhance equipment reliability. This chapter describes how the terms Danger, Warning, Caution, Important, and Note are used throughout the manual.
Page 10: General Information
Responsibility of the Manufacturer GE is responsible for the effects on safety, reliability, and performance if: assembly operations, extensions, readjustments, modifications, or repairs are carried out by persons authorized by GE;...
Page 11: Definitions Of Terminology
Safety: Definitions of Terminology Definitions of Terminology Six types of special notices are used throughout this manual. They are: Danger, Warning, Caution, Contraindication, Important, and Note. The warnings and cautions in this Safety section relate to the equipment in general and apply to all aspects of the monitor.
Page 12: Monitor Contraindications, Warnings, And Precautions
Safety: Monitor Contraindications, Warnings, and Precautions Monitor Contraindications, Warnings, and Precautions Warnings WARNINGS ACCIDENTAL SPILLS—In the event that fluids are accidentally spilled on the monitor, take the monitor out of operation and inspect for damage. APPLICATION—This monitor is not designed for direct cardiac connection.
Page 13 Safety: Monitor Contraindications, Warnings, and Precautions WARNINGS ELECTROSURGERY—The monitor is not designed for use with high-frequency surgical devices. In addition, measurements may be affected in the presence of strong electromagnetic sources such as electrosurgery equipment. EXPLOSION HAZARD—Do not use this equipment in the presence of flammable anesthetics or inside an oxygen tent.
Page 14 Safety: Monitor Contraindications, Warnings, and Precautions WARNINGS LINE ISOLATION MONITOR TRANSIENTS—Line isolation monitor transients may resemble actual cardiac waveforms, and thus cause incorrect heart rate determinations and alarm activation (or inhibition). STRANGULATION—Make sure all patient cables, leadwires, and tubing are positioned away from the patient’s head to minimize the risk of accidental strangulation.
Page 15 GE Service Representative. DAILY TESTING—It is essential that the monitor and accessories be inspected every day. It is recommended practice to initiate the monitor’s self-test feature at the beginning of each...
Page 16 Turn equipment in the vicinity off and on to isolate the offending equipment. Reorient or relocate the other receiving device. Increase the separation between the interfering equipment and this equipment. If assistance is required, contact your GE Service Representative. 170 Series Monitor Revision C...
Page 17: Equipment Symbols
Safety: Equipment Symbols Equipment Symbols The following is a list of symbols used on products manufactured by GE. Some symbols may not appear on your unit. Table 1-2. Equipment Symbols ATTENTION: Consult accompanying documents. TYPE B EQUIPMENT. Type B equipment is...
Page 18 Safety: Equipment Symbols For your notes 1-10 170 Series Monitor Revision C 2000947-004...
Page 19: Introduction
Chapter 2 Introduction This section lists the indications for use for monitors in the 170 Series as well as provides an explanation of the different patient monitoring modalities. This section summarizes the clinical applications of monitors in the 170 Series: Indications for Use .
Page 20: Indications For Use
Introduction: Indications for Use Indications for Use Models 171 and 172 Models 171 and 172 Fetal Monitors are indicated for use in the monitoring of the fetus during the antepartum period as well as throughout labor and delivery. Each monitor also has an optional monitoring mode to detect fetal body movements. Models 173 and 174 Models 173 and 174 Fetal Monitors are indicated for use in the monitoring of the fetus throughout labor and delivery.
Page 21: Monitoring Methods
Introduction: Monitoring Methods Monitoring Methods The following is a summary of all the clinical monitoring methods found in the 170 Series. Fetal Heart Rate External Method, Pulsed Doppler Ultrasound Ultrasound monitoring is available on all 170 Series Monitors. Models 171 and 173 provide a single ultrasound channel, while Models 172 and 174 provide two ultrasound channels.
Page 22: Features
Introduction: Features Features The 170 Series is a family of fetal monitors offering various combinations of modalities to suit your institution’s needs. Each monitor boasts the following qualities: The strip chart recorder is a quiet, easy-to-load, high resolution thermal array printer.
Page 23: About Your Monitor
Introduction: About Your Monitor About Your Monitor This manual describes all monitors in the 170 Series; therefore some sections may not apply to your model monitor. Refer to Table 2-1. Model 171 The Model 171 Antepartum Fetal Monitor provides singleton ultrasound and external uterine activity monitoring.
Page 24 For your notes 170 Series Monitor Revision C 2000947-004...
Page 25: Controls, Indicators, And Connectors
Chapter 3 Controls, Indicators, and Connectors This section describes all possible controls, indicators, and connectors in the 170 Series. This section contains the following information: Front Panel Controls........Front Panel Displays and Indicators.
Page 26: Front Panel Controls
Controls, Indicators, and Connectors: Front Panel Controls Front Panel Controls Figure 3-1. Front Panel Controls (Model 172 shown) Table 3-1. Front Panel Controls Symbol Name Power Record Paper Advance Mark/Offset Setup Volume 170 Series Monitor Revision C 2000947-004...
Page 27 Controls, Indicators, and Connectors: Front Panel Controls Table 3-1. Front Panel Controls UA Reference Alarm Silence Power Button and Indicator Pressing the blue Power button turns the monitor on and illuminates the green indicator to the left of the button. Pressing the button again puts the monitor in standby and extinguishes the indicator.
Page 28 Controls, Indicators, and Connectors: Front Panel Controls Setup Button Pressing and holding this button while the monitor is on enters a user setup mode for configuring the monitor. Pressing and holding this button during power up enters a service setup mode. Refer to “Chapter 4, Setup Procedures”...
Page 29 Controls, Indicators, and Connectors: Front Panel Controls UA Reference Button The UA Reference button is used to set the uterine activity pressure reference. This button is also used during setup. Setting a Baseline for External Monitoring (Tocotransducer) Briefly pressing the UA Reference button sets the pressure baseline at a preset default.
Page 30: Front Panel Displays And Indicators
Controls, Indicators, and Connectors: Front Panel Displays and Indicators Front Panel Displays and Indicators Fetal Heart Rate Display(s) and Indicator(s) FHR Display A three-digit yellow numeric display indicates the fetal heart rate in beats per minute. The value flashes during an alarm condition. Heartbeat Indicator A yellow heart shaped indicator flashes with each detected valid heartbeat for the fetal heart.
Page 31 Controls, Indicators, and Connectors: Front Panel Displays and Indicators Alarms Disabled Indicator This yellow indicator illuminates when all alarms have been disabled. The indicator is unlit when alarms are enabled. Refer to “Chapter 4, Setup Procedures” information on enabling/disabling alarms. Audio Alarm Indicator Active Patient Alarms For active patient alarms, this yellow indicator flashes;...
Page 32: Front Panel Connectors
Controls, Indicators, and Connectors: Front Panel Connectors Front Panel Connectors Model 171 Connectors Figure 3-2. Model 171 Connectors Ultrasound Connector The ultrasound connector is a blue, round receptacle mechanically keyed to accept only a Corometrics ultrasound transducer plug. The fetal heart rate derived from this transducer shows in the fetal heart rate display.
Page 33 Controls, Indicators, and Connectors: Front Panel Connectors Model 172 Connectors Figure 3-3. Model 172 Connectors Primary Ultrasound Connector The primary ultrasound connector is a blue, round receptacle mechanically keyed to accept only a Corometrics ultrasound transducer plug. The fetal heart rate derived from this transducer shows in the primary fetal heart rate display.
Page 34 Controls, Indicators, and Connectors: Front Panel Connectors Model 173 Connectors Figure 3-4. Model 173 Connectors Ultrasound Connector The ultrasound connector is a blue, round receptacle mechanically keyed to accept only a Corometrics ultrasound transducer plug. The fetal heart rate derived from this transducer shows in the primary fetal heart display.
Page 35 Controls, Indicators, and Connectors: Front Panel Connectors Model 174 Connectors Figure 3-5. Model 174 Connectors Combi-Connector (Primary Ultrasound or FECG) The combi-connector is a blue connector with a dark grey inner center. This round receptacle is mechanically keyed to accept only a Corometrics ultrasound transducer plug or a Corometrics FECG cable/legplate plug.
Page 36: Strip Chart Recorder
Controls, Indicators, and Connectors: Strip Chart Recorder Strip Chart Recorder Figure 3-6. Strip Chart Recorder The strip chart recorder is located on the right side of the front panel. Latches on each side of the recorder open the paper drawer. Two styles of paper are available: 30-240 BPM scale and 50-210 BPM scale.
Page 37 Controls, Indicators, and Connectors: Strip Chart Recorder Uterine Activity Grid The uterine activity trend prints in black on the bottom (or right) grid of the strip chart paper. Refer to the “170 Series Operator’s Manual” for more information about uterine activity trends and annotations.
Page 38: Rear Panel Connectors
AC wall outlet. The connector is labeled . The power supply is a CONNECT TO GE MEDICAL SYSTEMS REF 7714AAT ONLY universal AC-to-DC converter which can accept an AC input in the range 100–230 VAC.
Page 39 Controls, Indicators, and Connectors: Rear Panel Connectors Nurse Call Interface This connector is intended for future interfacing to a standard Nurse Call System. RS-232C Connectors Two RS-232C connectors are provided for interfacing to peripheral equipment such a maternal non-invasive blood pressure monitor a central information system that uses Hewlett-Packard’s Digital Series Interface Protocol Contact your Service Representative for more information.
Page 40 For your notes 3-16 170 Series Monitor Revision C 2000947-004...
Page 41: Setup Procedures
Chapter 4 Setup Procedures This section contains information about configuring a 170 Series Monitor to meet the individual needs of your clinic or hospital. Use of the monitor will vary according to the accessories attached to it, the clinical applications in which it is used, and the personal preferences of the users.
Page 42: Loading Strip Chart Paper
Setup Procedures: Loading Strip Chart Paper Loading Strip Chart Paper The required paper for use with the 170 Series Monitor is: catalog number (REF) 4305AAO/CAO (HR scale of 30–240 BPM); or catalog number (REF) 4305BAO/DAO (HR scale of 50–210 BPM). CAUTIONS LOADING PAPER—The instructions for loading paper into a 120 or 170 Series Monitor are different than the instructions for...
Page 43 Setup Procedures: Loading Strip Chart Paper To install Corometrics catalog number (REF) 4305AAO/BAO/CAO/DAO chart paper in the 170 Series Monitor, follow these steps: CAUTION LOADING PAPER—Paper loading instructions for a 170 or 120 Series Monitor are different than other Corometrics monitors with which you may be familiar.
Page 44 Setup Procedures: Loading Strip Chart Paper Fan the pack of Z-fold paper on all sides to loosen any folds and to ensure proper feed of the paper throughout the recorder. Figure 4-3. Fanning the Paper Hold the package of paper so that: the black squares are on the bottom of the pack;...
Page 45 Setup Procedures: Loading Strip Chart Paper Unfold two sheets from the top of the pack so that they extend toward you. Figure 4-5. Creating a Paper Leader Place the pack in the drawer so that the pack is laying flat in the bottom of the paper tray.
Page 46 Setup Procedures: Loading Strip Chart Paper Pull the paper leader taut at an angle between remaining pack and the paper guides. The balance of the paper pack should stay flat in the drawer as shown in Figure 4-7. (The paper guides are shown in Figure 4-8.) Pull paper...
Page 47: Turning The Monitor On
Series Monitor. Connect the AC adapter into the power supply connector labeled: CONNECT TO GE MEDICAL SYSTEMS REF 7714AAT ONLY Figure 4-9. Connecting the AC Adapter Connect one end of the detachable line cord to the AC adapter; connect the other end into a hospital grade grounded wall outlet.
Page 48: Monitor Self-Test Routines
Setup Procedures: Monitor Self-Test Routines Monitor Self-Test Routines NOTE: Ensure paper is installed in the recorder in order to verify a successful recorder test. Each 170 Series Monitor contains a self-test routine which checks the internal circuitry of the monitor, the displays and indicators, and the strip chart recorder. The self-test routine is automatically initiated each time you turn on the monitor.
Page 49 Setup Procedures: Monitor Self-Test Routines GE MEDICAL SYSTEMS 4305CAO 41153 PAGES REMAING 30-240 HR Scale TEST: ARE ALL DOTS PRINTED? mm Hg Figure 4-11. Recorder Test Revision C 170 Series Monitor 2000947-004...
Page 50: Customizing The Monitor
Setup Procedures: Customizing the Monitor Customizing the Monitor User Setup Mode The monitor includes a user setup mode where you can: enable/disable alarm functionality set the high alarm limit for the fetal heart rate set the low alarm limit for the fetal heart rate set the alarm volume set the time and date Service Setup Mode...
Page 51 Setup Procedures: Customizing the Monitor Setting or value for selected feature (e.g. Monitor Feature Code FHR Alarms On or 180 (e.g. FHR Alarms or BPM High Alarm Limit). High Alarm Limit). EXAMPLE Press to enter the user setup mode. ( or ) to change the number.
Page 52 Setup Procedures: Customizing the Monitor You can enter the user setup mode during an active monitoring session. The fetal heart rate and uterine activity trends print without interruption and the FHR tones remain audible; however you will be unable to see the heart rate and uterine activity values on the display while in the user setup mode.
Page 53 Setup Procedures: Customizing the Monitor NOTE: If you press the button to exit the setup mode (user or service) Power any changes you made will not be stored in memory. NOTE: You must exit by pressing the button in order for changes to Setup take effect.
Page 54 Setup Procedures: Customizing the Monitor Table 4-2. Summary of User Setup Codes Code Setting or Value (UA Display) (Primary FHR Display) Code Description 0 = off (disabled) FHR Alarms 1 = on (enabled) FHR High Alarm Limit 140–210 (BPM, in increments of 5 BPM) FHR Low Alarm Limit 50–140 (BPM, in increments of 5 BPM) FHR Alarm Volume...
Page 55 Setup Procedures: Customizing the Monitor Table 4-3. Summary of Service Setup Codes Code (UA Display) Setting Or Value (Primary FHR Display) Code # Code Description ECG artifact elimination (173, 174 only) 0 = off; 1 = on heartbeat coincidence (172, 173, 174 only) 0 = off;...
Page 56 Setup Procedures: Customizing the Monitor Table 4-4. Summary of Factory Defaults Setup Option Factory Default Hospital/Clinic Setting FHR Alarms FHR High Alarm Limit 160 BPM FHR Low Alarm Limit 120 BPM FHR Alarm Volume Eastern Standard Time or Daylight- Time/Date Saving Time—whichever is applicable *ECG Artifact Elimination...
Page 57: Printing A Summary Of Configuration Settings
Setup Procedures: Customizing the Monitor Printing a Summary of Configuration Settings To print the software version number and a summary of configuration settings on the strip chart paper: NOTE: You can only enter the service setup mode from a power off state. Enter the service mode: Press and hold the button...
Page 58: Quick Reference Card
Setup Procedures: Quick Reference Card Quick Reference Card Your monitor was shipped with a Quick Reference Card in the appropriate language. The front side lists the user setup codes while the reverse lists the service setup codes. The card is laminated and comes with hook and loop adhesives to attach to your monitor.
Page 59 Setup Procedures: Quick Reference Card Revision C 170 Series Monitor 4-19 2000947-004...
Page 60: Flasher Software Utility Upgrade
Setup Procedures: Flasher Software Utility Upgrade Flasher Software Utility Upgrade The Corometrics Flasher is a software utility program which uses one of the monitor’s RS-232 serial ports to upgrade to a newer software release; or to install a purchased option such as fetal movement detection. Each Flasher disk contains the software upgrade for one-time use only.
Page 61: Theory Of Operation
Chapter 5 Theory of Operation This section of the manual contains the electronic theory of operation for the 170 Series Monitor. When possible, references are made to the appropriate schematic contained in “Chapter 11, Parts Lists” of this manual Throughout this chapter, signal names ending with an asterisk (*) are active low. This chapter contains the following information: Functional Overview .
Page 62: Functional Overview
Theory of Operation: Functional Overview Functional Overview For all 170 Series Monitors, the Main Board controls the majority of the 170 Series functionality including: antepartum (US, TOCO) front ends and connector(s) uterine activity front end and connector seven-segment displays user-interface buttons peripheral device communications processing For Models 173 and 174, a separate FECG/IUP Board controls:...
Page 63 Theory of Operation: Functional Overview Table 5-1. Main Power Connector Pin Number Description +12 Vdc Input Negative Input Shield Figure 5-2. Main Power Connector Revision C 170 Series Monitor 2000947-004...
Page 64 Theory of Operation: Functional Overview Table 5-2. Recorder Printhead Connector Signal Type Pin Number Signal Name (Relative To Recorder Signal Description Board) +24V Input +24 Volts for Recorder +24V Input +24 Volts for Recorder +24V Input +24 Volts for Recorder +24V Input +24 Volts for Recorder...
Page 65 Theory of Operation: Functional Overview Table 5-3. Recorder Motor Connector Signal Type Pin Number Signal Name (Relative to Signal Description Main board) No Connection Output Motor Phase 3 Output Motor Phase 4 +5VM Output +5 Volts for Motor No Connection Output Motor Phase 2 Output...
Page 66 Theory of Operation: Functional Overview Table 5-5. RS-232 Connector 1 Pin Number Signal Name Signal Description 200 mA Fused Request to Send Output from Monitor Receive Data Input to Monitor Signal Ground Signal Ground Transmit Data Output from Monitor Clear to Send Input to Monitor 200 mA Fused Table 5-6.
Page 67 Theory of Operation: Functional Overview Table 5-7. Speaker Connector Pin Number Signal Name Signal Description SPKR-LO Speaker Low Side Connection SPKR-HI Speaker High Side Connection Table 5-8. Remote Mark Connectors (Remote Event Marker and Fetal Acoustic Stimulator) Pin Number Signal Name Signal Description Remote Event Marker or Fetal Acoustic Stimulator Shunt...
Page 68 Theory of Operation: Functional Overview Table 5-9. Ultrasound Connector(s) Pin # Signal Name Signal Description No Connection No Connection Chassis Ground XMIT/RCV SHIELD Shield for Transmit/Receive XMIT/RCV Transmit/Receive No Connection No Connection No Connection Chassis Ground No Connection U/S ENABLE* Enable for Ultrasound Channel Chassis Ground * Active low.
Page 69 Theory of Operation: Functional Overview Table 5-10. FECG Connector (Model 173) Pin # Signal Name Signal Description No Connection FECGEN* Enable for FECG Channel Chassis Ground No Connection No Connection Left Arm Right Arm SHIELD Shield No Connection No Connection No Connection Right Leg * Active low.
Page 70 Theory of Operation: Functional Overview Table 5-11. Ultrasound/FECG Combi-Connector (Model 174) Pin # Signal Name Signal Description No Connection FECGEN* Enable for FECG Channel ISOGND Isolated Ground XMIT/RCV SHIELD Shield for Transmit/Receive (isolated ground) XMIT/RCV Transmit/Receive (isolated ground) Left Arm Right Arm SHIELD Shield (isolated ground)
Page 71 Theory of Operation: Functional Overview Table 5-12. Uterine Activity Connector Pin# Signal Name Signal Description +PRESSURE Positive Input to Pressure Amplifier –PRESSURE Negative Input to Pressure Amplifier No Connection +4 VOLT +4 Volt Reference EXCITATION No Connection +4 Volt Reference Ground (EXCITATION REF) UA SHIELD Shield...
Page 72 Theory of Operation: Functional Overview Table 5-13. Telemetry Connector Signal Type Pin Number Signal Name (Relative To Main Signal Description Board) TMARK/ Input Telemetry Mark Line (active low) TELPR/ Input Telemetry Present (active low) NC (171/172) No Connection (171/172) Input TECGEN/ (173) Telemetry FECG Enable (173/174) No Connection...
Page 73 Theory of Operation: Functional Overview Table 5-14. Display Interface (J18) Signal Type Pin Number Signal Name (Relative To Main Signal Description Board) Output Main Board Data Bit 6 Output Main Board Data Bit 5 Output Main Board Data Bit 7 DISPLCS* Output Not Used...
Page 74 Theory of Operation: Functional Overview Table 5-15. Membrane Switch Panel Interface (J19) Signal Type Pin Number Signal Name (Relative To Main Signal Description Board) UAREF* Input UA Ref Switch Input PWRANODE Output Power Indicator LED Anode REC* Input Recorder On Switch Input Output No Connection MARK*...
Page 75 Theory of Operation: Functional Overview Table 5-16. FECG/UA Option Interface Part One (J16), Models 173/174 Only Signal Type Pin Number Signal Name (Relative To Main Signal Description Board) +12V Output +12 V for FECG Isolated Power Supply Output +12 V Ground Output +5 V Supply +7.5V...
Page 76 Theory of Operation: Functional Overview Table 5-17. FECG/UA Option Interface Part Two (J15), Models 173/174 Only Signal Type Pin Number Signal Name (Relative To Main Signal Description Board) Output Right Arm Input from Patient Connector Output Left Arm Input from Patient Connector Input Right Leg Drive Signal from FECG/IUP Board SHIELDF...
Page 77: Main Board Theory Of Operation
Theory of Operation: Main Board Theory of Operation Main Board Theory of Operation Figure 5-10 provides a block diagram of the Main Board in the 170 Series Monitor. The board number varies according to the particular model in the series as summarized in Table 5-18.
Page 78 Theory of Operation: Main Board Theory of Operation Audio Module Status/Switch Input Module Communications Module • Audio amplifier • Front panel switch input • Quad async UART • Ultrasound volume controls buffers • RS-232 transceivers • ECG/alarm-tone volume • Rear panel, recorder, and control front-end status buffers Recorder Interface...
Page 79 Theory of Operation: Main Board Theory of Operation Processing Block The processing block consists of the processor, system memory, battery RAM (with real time clock), and address decoder PAL. Figure 5-11 provides a block diagram of the processing block. System Flash Memory System Boot Flash Memory System SDRAM Memory •...
Page 80 Theory of Operation: Main Board Theory of Operation The processor (U1) is an Hitachi SH3 used with a 32-bit data bus and 24-bit address Ω Ω bus. Series 100 resistors and 100 k pull-up resistors are provided for all address, data bus and output lines. The series resistors limit transient response resulting in better EMI performance.
Page 81 Theory of Operation: Main Board Theory of Operation System Flash ROM Decoder Bank 1 Processor Address/Data and Control System Flash ROM Decoder Bank 2 Recorder Control Decoder and Latch • Head strobes • Head supply control • Head protection Recorder Control Latch Decoder Motor phase latches General Decoder and Latch...
Page 82 Theory of Operation: Main Board Theory of Operation Display Interface Module The display interface consists of a data buffer (U14) for D0–D7 which interfaces to the ICM7228A seven-segment LED driver IC (U1 on the display board), and D flip- flop U3 which drives the ±1 UA segments through Q1–Q4 transistors. Data lines have 100 Ω...
Page 83 Theory of Operation: Main Board Theory of Operation Communications Module The communications section consists of quad UART U21 and RS-232 transceivers U19 and U20. The baud rate frequencies are generated from crystal X3 (3.6864 MHz). Two of the RS-232 channels are used for external communications while the remaining two provide spare internal channels.
Page 84 Theory of Operation: Main Board Theory of Operation Recorder Interface Module The recorder interface consists of motor control, paper status logic, and printhead control logic. The motor control consists of latch U3, buffer U6, and FET transistors Q5–Q8. The four phase signals are generated by the processor using U3. These phases are translated to 5 V and buffered by U6 to drive the FETs which in turn drive the unipolar motor.
Page 85 Theory of Operation: Main Board Theory of Operation to Data Bus to Motor Motor Control Latch Paper Status Lines Status Read Buffer from PAL Device Printhead Control Latch to Printhead • strobes • load line • clock • data Printhead Protection Circuitry Printhead Data Shift Register Figure 5-16.
Page 86 Theory of Operation: Main Board Theory of Operation Ultrasound Module Model 171 and Model 173 Monitors contain a single ultrasound channel board. Model 172 and Model 174 Monitors contain a dual ultrasound channel board. The theory contained in this section references the dual ultrasound board but is applicable to the single ultrasound board as well.
Page 87 Theory of Operation: Main Board Theory of Operation Table 5-19. PAL Outputs Pin Number Signal Name Signal Description TRANS_BURST Operates the Ultrasound Transmitter. DET_BURST1 Activates the Demodulator. 575KC Synchronizes the Power Supplies USMODE Signals the Processor that the US Channel is Active PIN1 Selects Channel 1 Transducer PIN2...
Page 88 Theory of Operation: Main Board Theory of Operation Ultrasound Oscillator Internal gates located in integrated circuit U50, X4, and associated components comprise a crystal-controlled oscillator running at 4.604 MHz. The inverted output of this oscillator is the clock that is used to clock latch U48; therefore changes at the outputs of U50 are not clocked out of U48 until one-half clock cycle later.
Page 89 Theory of Operation: Main Board Theory of Operation U43 is a quad-switched capacitor integrated circuit configured as a balanced ring demodulator. Its analog inputs are connected to the differential outputs of the pre- amplifier at the secondary of T1. The switches within the device are actuated by the signal DET_BURST1.
Page 90 Theory of Operation: Main Board Theory of Operation Filtering The main filter is a band-pass amplifier with 3 dB points at 120 Hz and 300 Hz, respectively. The band width slopes are greater than 40 dB/octave. The maximum gain of the filter is 46 dB with peaking of approximately 48 dB at 250 Hz. The nominal gain in the system is approximately 36 dB and is controlled by R454.
Page 91 Theory of Operation: Main Board Theory of Operation Summing Bridge Tone Bit Amplifier Amplifier Digital Potentiometers for Volume Control (x3) Channel 1 US Audio Ultrasound Summing Audio Amplifier Channel 2 Doubler US Audio Serial Clock and Data Figure 5-18. Audio Module Block Diagram Ultrasound Envelopes The outputs of the main filters are also input to U32 and U35.
Page 92 Theory of Operation: Main Board Theory of Operation Uterine Activity Integrated circuit U33, with a gain of 200, and U34 (pin 7), with a gain of 1.25, provide a total gain of 250 for the on-board tocotransducer pressure channel. The output of U34 (pin 7) is offset +0.5 V, providing a dynamic range of –80 to +400 relative units.
Page 93 Theory of Operation: Main Board Theory of Operation Power Supplies Integrated circuit U60 is a voltage comparator that senses that the power has been removed, and inhibits battery RAM access and recorder printing when the supply drops to approximately 10 V. Integrated circuit U58 forms an R-S flip-flop.
Page 94 Theory of Operation: Main Board Theory of Operation Power Status Comparator 5 V Linear Regulator for Audio 5 V Linear Regulator for Motor 5 V Linear Regulator for Digital Logic Switching Pre-Regulator 3.3 V Linear Regulator for Digital Logic +12 V Input 3.3 V Linear Regulator for Analog Circuitry...
Page 95 Theory of Operation: Main Board Theory of Operation FECG/IUP Board Interface J16 and J15 provide the interface to the FECG/IUP Board. J15 is patient isolated. RA, LA, RL FECG Connector to Data Bus 12-Bit A/D Converter ±PRESS FECG FECG/IUP Pressure 4V REF Board Connector...
Page 96: Fecg/Iup Board Theory Of Operation
Theory of Operation: FECG/IUP Board Theory of Operation FECG/IUP Board Theory of Operation Isolated Power Supply Patient isolation for the FECG and the IUP catheter is accomplished by providing floating power supplies to power the FECG and IUP front end electronics. Integrated circuit U12 provides non-overlapping drive signals to dual FET U9 which in turn drives the primary of transformer T1.
Page 97 Theory of Operation: FECG/IUP Board Theory of Operation Pressure Channel The input to the pressure channel is to resistors R9 and R10 with the signal names of –PRESS and +PRESS respectively. Resistors R9 through R12 and capacitors C16 through C18 provide RF filtering, and in conjunction with diode limiters D1 and D2, provide protection from electro-static discharge.Instrumentation amplifier U5 provides a gain of 248 which is given by (49.4E3/R13)+1.
Page 98 Theory of Operation: FECG/IUP Board Theory of Operation FECG Channel The input to the FECG channel is two resistors R42 and R43 with the signal names of RA and LA respectively. Resistors R42, R43, R45, and R462 and capacitors C38 through C40 provide RF filtering, and in conjunction with diode limiters D3 through D6 provide protection from electro-static discharge.
Page 99 Theory of Operation: FECG/IUP Board Theory of Operation ground on the non-floating side of the barrier. It is then sensed by the system microprocessor. The IUP enable ties resistor R97 to the floating ground when the IUP transducer cable is attached. This causes approximately 4.5 mA to flow in the LED of opto- coupler U17.
Page 100 Theory of Operation: FECG/IUP Board Theory of Operation To Main Board A/D To Main Board Front End Converter for Processing FECG/IUP Connector Isolated Side Unisolated Side Connector Connector • FECG Low Noise Differential Filtering Amplifier with Optical and Gain Protection Circuitry Isolation Stages •...
Page 101 Theory of Operation: FECG/IUP Board Theory of Operation Table 5-20. FECG/UA Unisolated Output (P16), Models 173/174 Only Signal Type Pin Number Signal Name (Relative To Main Signal Description Board) +12 V for FECG Isolated Power Supply +12 V (173) (Model 173 only) Output +11.6V (174) +11.6 V for FECG Isolated Power Supply...
Page 102 Theory of Operation: FECG/IUP Board Theory of Operation Table 5-21. FECG/UA Isolated Output (P15), Models 173/174 Only Signal Type Pin Number Signal Name (Relative To Main Signal Description Board) Output Right Arm Input from Patient Connector Output Left Arm Input from Patient Connector Input Right Leg Drive Signal from FECG Board SHIELDF...
Page 103: Functional Checkout Procedure
Chapter 6 Functional Checkout Procedure Like all electronic monitoring devices, internal and external components are subject to fatigue, wear, and the potential for failure over time and under varying conditions of use. Additionally, events such as dropping the monitor, spilling liquids on the monitor, or crimping the lead wires or patient cables can cause damage which may affect the overall system performance.
Page 104: Equipment Required
Reusable Strain Gauge with holder (4007BAX); or Reusable Strain Gauge without holder (4007LAX); or Disposable Strain Gauge (4009AAX) Strain Gauge Transducer NOTE: These items are no longer sold by GE. However, transducers in the field are compatible with the 170 Series Monitor. Model 325 Simulator (14203A/B)
Page 105: General
Visually inspect the monitor, patient cables, and other accessories for cracks, fissures, or other signs of wear or damage. Do not use any monitor or accessory which appears to be worn or damaged. If unsure, contact your GE Service Representative to arrange for evaluation, replacement, or repair of the suspect item(s).
Page 106: Monitor Self-Test
Functional Checkout Procedure: Monitor Self-Test Monitor Self-Test The 170 Series Monitor contains test routines which verify the unit’s calibration and internal circuitry. These routines are initiated by each time the monitor is turned on. The test results are printed on the strip chart recorder paper, verifying the integrity of the unit.
Page 107: Front Panel Pushbutton Test
Functional Checkout Procedure: Front Panel Pushbutton Test Front Panel Pushbutton Test This procedure ensures the functionality of the front panel pushbuttons. Disconnect all transducers from the front panel. Enter the service setup mode (see page 4-10) and set the recorder speed to 1 cm/ min.
Page 108: Connecting The Simulator
Functional Checkout Procedure: Connecting the Simulator Connecting the Simulator This part of the procedure prepares the simulator for use. NOTE: You must use a Model 325 Simulator for the functional checkout procedure. (Monitors in the 170 Series do not work with Model 305 Simulators.) Ensure the Model 325 switch is in the off position.
Page 109: Fecg Test
Functional Checkout Procedure: FECG Test FECG Test This portion of the functional checkout procedure ensures the integrity of the FECG circuitry and the heart rate channel of the recorder. Connect the Model 325 Simulator’s ECG sub-cable to the receptacle on FECG the monitor Set the switches on the Model 325 Input Simulator according to...
Page 110 Functional Checkout Procedure: FECG Test Table 6-2. Model 325 Simulator Settings for FECG Test Section Switch Setting Main RATE Rate MANUAL FECG/MECG Mode FECG QRS Amplitude 15 µV QRS Polarity GENERAL Pattern Memory Main Mode TOCO Repeat step 5 for each of the following rates: 60, 210, and 240 BPM. Change the simulator’s switch from + to –.
Page 111 Functional Checkout Procedure: FECG Test switch to the ∆15 position. Verify the following on 13. Set the simulator’s ECG Rate the monitor: The FHR1 value oscillates by 15 BPM. The FHR1 heartbeat indicator flashes for each input signal. The ECG “beep” is heard from the rear panel speaker. The recorder prints an oscillation of 15 BPM between 115 and 130 BPM on the top grid of the strip chart paper.
Page 112 Functional Checkout Procedure: FECG Test Figure 6-1. FECG Ramp 6-10 170 Series Monitor Revision C 2000947-004...
Page 113 Functional Checkout Procedure: FECG Test Figure 6-2. FECG Artifact Elimination Revision C 170 Series Monitor 6-11 2000947-004...
Page 114: Legplate Inspection
Functional Checkout Procedure: Legplate Inspection Legplate Inspection Inspect the legplate as follows: Check for a proper seal around the ground plate. Ensure that no contaminants are present on either the ground plate or the push posts. Visibly assess the condition of the cable, strain relief, and connector pins. 6-12 170 Series Monitor Revision C...
Page 115: Ultrasound Test
Functional Checkout Procedure: Ultrasound Test Ultrasound Test This portion of the functional checkout procedure ensures the integrity of the ultrasound circuitry and the heart rate channel of the recorder. Connect the simulator’s US sub-cable to the receptacle on the monitor. Set the switches on the Model 325 Input Simulator according to Table 6-3.
Page 116 Functional Checkout Procedure: Ultrasound Test Table 6-3. Ultrasound Test Simulator Settings Section Switch Setting General Pattern Memory Main Mode TOCO Place the simulator’s switch in each of the individual rate settings (50, US Rate 60, 120, and 210 BPM). Verify the following on the monitor: The FHR1 value reflects the simulator setting ±...
Page 117 Functional Checkout Procedure: Ultrasound Test Figure 6-3. Ultrasound Ramp Revision C 170 Series Monitor 6-15 2000947-004...
Page 118: Fetal Movement Detection Test
Functional Checkout Procedure: Fetal Movement Detection Test Fetal Movement Detection Test This portion of the functional checkout procedure ensures the integrity of the fetal movement detection circuitry and the heart rate channel of the recorder. (Refer to Figure 6-4.) NOTE: Fetal movement detection is an option which must be installed and enabled for use on your monitor.
Page 119 Functional Checkout Procedure: Fetal Movement Detection Test Figure 6-4. Fetal Movement Detection Revision C 170 Series Monitor 6-17 2000947-004...
Page 120: Ultrasound Transducer Test
Functional Checkout Procedure: Ultrasound Transducer Test Ultrasound Transducer Test Inspect a Model 116/118/120/170 ultrasound transducer as follows: Ensure there are no cracks around the transducer face. Visibly assess the condition of the cable, strain relief, and connector pins. Disconnect the simulator’s ultrasound cable from the front panel of the 170 Series Monitor.
Page 121: Uterine Activity Test
Functional Checkout Procedure: Uterine Activity Test Uterine Activity Test This portion of the functional checkout procedure tests the uterine activity section of the 170 Series Monitor. Set the switches on the Model 325 Simulator according to Table 6-5. Connect the simulator’s UA sub-cable to the receptacle on the monitor.
Page 122 Functional Checkout Procedure: Uterine Activity Test 11. Disconnect the Model 325 Simulator’s uterine activity sub-cable from the input receptacle on the front panel of the monitor. Verify the following on the monitor: The UA value is blank. The recorder stops printing the uterine activity trace. The recorder prints the message on the center margin of the strip UA INOP...
Page 123: Tocotransducer Test
Functional Checkout Procedure: Tocotransducer Test Tocotransducer Test Inspect a Nautilus tocotransducer as follows: Check for any cracks or contaminants on the tocotransducer especially on the diaphragm located on the bottom of the tocotransducer. Visibly assess the condition of the cable, strain relief, and connector pins. Connect the tocotransducer to the input receptacle on the front panel of the 170 Series Monitor.
Page 124: Strain Gauge Transducer Test
Functional Checkout Procedure: Strain Gauge Transducer Test Strain Gauge Transducer Test Inspect a strain gauge as follows: Unscrew the plastic dome from the transducer and check for any cracks or contaminants on the transducer. Visibly assess the condition of the cable, strain relief, and the connector pins.
Page 125: Pattern Memory Test
Functional Checkout Procedure: Pattern Memory Test Pattern Memory Test The pattern memory of the simulator can be used to test any of the following mode combinations of the monitor. FECG/TOCO FECG/IUP US/TOCO or US2/TOCO US/IUP or US2/IUP US/FMD/TOCO US/FMD/IUP FECG/US/TOCO FECG/US/IUP NOTE: US/US2 cannot be tested simultaneously unless two Model 325 Simulators or two ultrasound transducers are used.
Page 126: Dual Heart Rate Test (Non-Pattern)
Functional Checkout Procedure: Dual Heart Rate Test (Non-Pattern) Dual Heart Rate Test (Non-Pattern) FECG/US Modes Connect the Model 325 Simulator’s ECG sub-cable to the monitor’s input FECG receptacle. Connect the simulator’s US sub-cable to the monitor’s input receptacle. Set the switches on the Model 325 Simulator according to Table 6-6.
Page 127 Functional Checkout Procedure: Dual Heart Rate Test (Non-Pattern) Table 6-6. Model 325 Simulator Settings for FECG/US Test Section Switch Setting Main RATE Rate 120 BPM FECG/MECG Mode FECG QRS Amplitude 50 µV QRS Polarity Mode ULTRASOUND/FMD Level Rate RAMP General Pattern Memory Revision C 170 Series Monitor...
Page 128 Functional Checkout Procedure: Dual Heart Rate Test (Non-Pattern) Figure 6-6. Dual Heart Rate, FECG and US 6-26 170 Series Monitor Revision C 2000947-004...
Page 129 Functional Checkout Procedure: Dual Heart Rate Test (Non-Pattern) Dual Ultrasound Modes As stated previously, the dual ultrasound mode of the 170 Series Monitor cannot be tested unless two Model 325 Simulators are used or two Nautilus ultrasound transducers. Do not attempt to test dual ultrasound using one Model 325 Simulator and one ultrasound transducer.
Page 130: Alarm Test
Functional Checkout Procedure: Alarm Test Alarm Test This portion of the test ensures the integrity of the audio alarms and tests the alarm limit software. Connect the Model 325 Simulator’s US sub-cable to the monitor’s input. Press and hold (for three seconds) to enter the monitor’s setup mode.
Page 131 Functional Checkout Procedure: Alarm Test Table 6-7. Alarm Test Simulator Settings Section Switch Setting Main RATE Rate MANUAL Mode General Pattern Memory 16. Use the simulator’s knob to decrease the US rate to 180 Manual Adjustment BPM. Verify that the Alarm indicator goes out and the heart rate numerics stop flashing.
Page 132 Functional Checkout Procedure: Alarm Test 26. Use the simulator’s knob to increase the US signal to 100 Manual Adjustment bpm. Verify the following on the monitor: The alarm tone continues sounding. The Alarm indicator stops continues flashing. The affected heart rate numerics continue flashing. 27.
Page 133: Serviceable Assemblies
Chapter 7 Serviceable Assemblies This chapter provides information to aid in performing routine service and maintenance on a 170 Series Monitor. This section of the manual is not intended as a substitute for proper professional training, or familiarity with the 170 Series Monitor.
Page 134: General Anti-Static Handling Precautions
Serviceable Assemblies: General Anti-Static Handling Precautions General Anti-Static Handling Precautions The following guidelines should be followed when handling circuit boards or assemblies containing circuit boards. Following these procedures helps resist damage that can be caused by static electricity. Discharge any static charge you may have built up before handling parts. Wear a grounded, anti-static wristband at all times.
Page 135: Transducer Plug Replacement Kits
Table 7-2 and ensure you have the correct kit. Unpack the kit and ensure it contains the items listed in Table 7-1. If something is missing, contact your GE Service Representative immediately. Table 7-1. Kit Summary Plug Kit Plug Type Cat.
Page 136 Serviceable Assemblies: Transducer Plug Replacement Kits Handling Precautions Transducers are delicate measuring instruments and must be handled accordingly. Transducer damage can be avoided by taking the following precautions: Avoid banging or dropping transducers. Refrain from wrapping transducer cables around transducer body. Do not immerse transducers in aqueous cleaning solutions.
Page 137 Serviceable Assemblies: Transducer Plug Replacement Kits Tocotransducer Cable Preparation Refer to Figure 7-1 Table 7-3 while following these steps: ⁄ Cut #24 AWG green wire (not supplied) to 1- inches long and strip each end ⁄ inch. This will be used as a jumper wire. ⁄...
Page 138 Serviceable Assemblies: Transducer Plug Replacement Kits 1² ² ² Vent Tube (Nautilus only) yellow Oetiker Clamp (Nautilus only) 1 ² #24 AWG Green Jumper Wire Shield Shrink Tubing 1² #24 AWG Green Wire Figure 7-1. Tocotransducer Cable Preparation Table 7-3. Tocotransducer Cable Wiring Pin Number Pin Length Description...
Page 139 Serviceable Assemblies: Transducer Plug Replacement Kits Ultrasound Transducer Cable Preparation Refer to Figure 7-2 Table 7-4 while following these steps: ⁄ Cut #24 AWG green wire (not supplied) to 1- inches long and strip each end ⁄ inch. This will be used as a jumper wire. ⁄...
Page 140 Serviceable Assemblies: Transducer Plug Replacement Kits 1² Score around length of jacket 1inch. Peel jacket and remove. Separate outer braided shield and twist. For Standard ultrasound transducers, the cable is a dual coaxial cable. For Nautilus ultrasound transducers, the cable is a single coaxial cable. If present, cut black coax and fillers flush with grey jacket.
Page 141 Serviceable Assemblies: Transducer Plug Replacement Kits Table 7-4. Ultrasound Cable Wiring Pin Number Pin Length Description Wire Color short — — short — — short Overall Shield #24 AWG Green LONG US Transmit/Receive Shield #24 AWG Green short White Coax —...
Page 142 Serviceable Assemblies: Transducer Plug Replacement Kits FECG Cable Preparation Refer to Figure 7-3 Table 7-5 while following these steps: ⁄ Cut #26 AWG green wire (not supplied) to 2 inches long. Strip one end inch. ⁄ ⁄ Cut #26 AWG blue wire (not supplied) to 1- inches long and strip each end inch.
Page 143 Serviceable Assemblies: Transducer Plug Replacement Kits 1² ² ² blue 1 ² #26 AWG Blue Jumper Wire Shrink Tubing Shield Shrink Tubing 1² #26 AWG Green Wire Figure 7-3. FECG Cable Preparation Revision C 170 Series Monitor 7-11 2000947-004...
Page 144 Serviceable Assemblies: Transducer Plug Replacement Kits Table 7-5. FECG Cable Wiring Pin Number Pin Length Description Wire Color short — — short ECG Enable Blue and #26 AWG Blue Jumper LONG Ground #26 AWG Blue Jumper short — — short —...
Page 145 Serviceable Assemblies: Transducer Plug Replacement Kits Plug Assembly Refer to Figure 7-4 while replacing a transducer plug. Note that the strain relief clamp (3) orientation is different between tocotransducers and all other transducers (ultrasound, FECG). In addition, the Oetiker clamp (11) is used for Nautilus Tocotransducers only.
Page 146 Serviceable Assemblies: Transducer Plug Replacement Kits Insert the pin housing into the corresponding recess of the half-shell (with strain-relief mounting holes). Position the housing so that the two dots at the back are visible and at right angles to the plane of the half-shell. Push the cable into the strain-relief slot.
Page 147: Nautilus Transducer Cable Replacement
Table 7-7. If something is missing, contact your GE Service Representative immediately. NOTE: Transducers are available in 5-, 8-, and 10-foot cable lengths. However, the cable assembly included in a replacement kit is available in an 8-foot length only.
Page 148 Serviceable Assemblies: Nautilus Transducer Cable Replacement Equipment Required You will need the following equipment: Phillips Head Torque Driver Screw Cap Extraction Tool (cat. no. 2004084-001) Soldering Iron and Solder (ultrasound transducers only) Loctite Adhesive #454 (recommended) Anti-Static Wristband Static-Free Work Surface Reference Figures Refer to Figure 7-5...
Page 149 Serviceable Assemblies: Nautilus Transducer Cable Replacement Procedure Unplug the transducer from the monitor or telemetry transmitter. Use the screw cap extraction tool to pry off the five screw caps (Figure 7-5). Discard all caps. CAUTION HANDLING–Take care not to damage the base sealing groove. Remove the five sealing screws and discard.
Page 150 Serviceable Assemblies: Nautilus Transducer Cable Replacement Secure the molded strain relief end of the cable in the cable nut: Place the flat side of the cable nut against the case base. Rotate the cable assembly into the cable nut; continue threading until the two are completely seated.
Page 151: Removing The Monitor Top Cover
Serviceable Assemblies: Removing the Monitor Top Cover Removing the Monitor Top Cover Unplug the AC adapter from the monitor to completely remove power. Remove the four bottom panel screws. CAUTION TOP COVER—The top cover remains tethered to the main board via the display board and membrane switch panel cables. Do not attempt to remove the monitor cover without first disconnecting these cables.
Page 152: Tocotransducer Calibration
Serviceable Assemblies: Tocotransducer Calibration Tocotransducer Calibration Any of the following three transducers can be used with the 170 Series Monitor: Corometrics Nautilus Tocotransducer Corometrics Trimline Tocotransducer Corometrics Large-Button Tocotransducer Pin 1* –P Pin 2* +4 V Pin 4* 475 W Pin 6* *Front Panel UA Connector Figure 7-7.
Page 153 Unpack the kit and ensure it contains the items listed in Table 7-10. If something is missing, contact your GE Service Representative immediately. The text of the instruction sheet is repeated here for informational purposes.
Page 154 Serviceable Assemblies: Tocotransducer Calibration Equipment Required IMPORTANT WEIGHT TYPE—The specified weight, cat. no. (REF) 2003005- 001, is designed specifically for testing Nautilus Tocotransducers. You will need the following equipment: Phillips Head Torque Driver Screw Cap Extraction Tool (cat. no. 2004084-001) Digital Voltmeter: DM501 or equivalent with x1 probe or leads Common Mode Rejection (CMR) Test Jack (Figure 7-7...
Page 155 Serviceable Assemblies: Tocotransducer Calibration Calibration for Cat. No. (REF) 2264 GAX/HAX/JAX/KAX/LAX/MAX Refer to Figure 7-6 during calibration. Set the Gain (R11) and Offset (R6) potentiometers fully clockwise. Connect the positive lead of the digital voltmeter to TP2 on the Main Board; connect the negative lead to TP9.
Page 156 Serviceable Assemblies: Tocotransducer Calibration Calibration for Cat. No. (REF) 2264 AAX/BAX/CAX/DAX/EAX/FAX Refer to Figure 7-6 during calibration. Set the Gain (R15) and Offset (R5) potentiometers fully counterclockwise. Set the Offset Trim (R6) potentiometer to its mid-position—approximately six turns from fully counterclockwise. Connect the positive lead of the digital voltmeter to TP2 on the Main Board;...
Page 157 Serviceable Assemblies: Tocotransducer Calibration Trimline Tocotransducers The Corometrics Trimline Tocotransducer must be calibrated using the following procedure for use with the 170 Series Monitor. Equipment Required Digital voltmeter: DM501 or equivalent with x1 probe or leads Common Mode Rejection (CMR) Test Jack (Refer to Figure 7-7 Table 7-8.)
Page 158 Serviceable Assemblies: Tocotransducer Calibration NOTE: When performing this procedure, keep in mind that due to the nature of the circuitry in the Trimline Tocotransducer, there is a stabilization time of approximately two seconds for any output voltage. After adjusting a potentiometer, verify that the output has stabilized prior to taking a voltage reading.
Page 159 Serviceable Assemblies: Tocotransducer Calibration 13. Torque seal all potentiometers. Affix new sealing tape and re-install the nameplate. CAUTION OFFSET VOLTAGES—Due to offset voltages induced by the circuitry in the Trimline Tocotransducer, it is necessary to adjust the change in voltage between the WEIGHT ON condition and WEIGHT OFF condition—instead of simply adjusting the output voltage for each condition.
Page 160 Serviceable Assemblies: Tocotransducer Calibration Large-Button Tocotransducer The Corometrics Large-Button Tocotransducer must be calibrated using the following procedure for use with the 170 Series Monitor. Equipment Required Digital voltmeter: DM501 or equivalent with x1 probe or leads Common Mode Rejection (CMR) Test Jack (Refer to Figure 7-7 Table 7-8.)
Page 161 Serviceable Assemblies: Tocotransducer Calibration Connect the positive lead of the digital voltmeter to TP2; connect the negative lead to TP9. Apply power to the 170 Series Monitor; then plug the CMR Test Jack into the monitor’s front panel uterine activity connector. Measure the voltage at TP2 and record the value.
Page 162: Nautilus Ultrasound Transducer Top Cover Replacement
Unpack the kit and ensure it contains the items listed in Table 7-12. If something is missing, contact your GE Service Representative immediately. The text of the instruction sheet is repeated here for informational purposes. Table 7-11. Kit Summary...
Page 163 Serviceable Assemblies: Nautilus Ultrasound Transducer Top Cover Replacement Procedure Turn off the monitor. Unplug the transducer from the monitor. Use the screw cap extraction tool to pry off the five screw caps (Refer to Figure 7-5). Discard all caps. CAUTION HANDLING—Take care not to damage the transducer base sealing groove.
Page 164: Nautilus Transducer Reassembly
Serviceable Assemblies: Nautilus Transducer Reassembly Nautilus Transducer Reassembly CAUTIONS VISIBLE INSPECTION—Ensure the base sealing groove, flat- seal o-ring, sealing surface, and sealing screws are free of visible surface defects, dust, dirt, and foreign material. SINGLE-USE COMPONENTS—Do not reuse case top, flat-seal o-ring, sealing screws, or screw caps.
Page 165 Serviceable Assemblies: Nautilus Transducer Reassembly burr Figure 7-10. Curved Screw Cap Shape, Nautilus Transducer burr Figure 7-11. Curved Screw Cap Alignment, Nautilus Transducer Revision C 170 Series Monitor 7-33 2000947-004...
Page 166: Testing A Repaired Transducer (Toco Or Us)
Serviceable Assemblies: Testing a Repaired Transducer (TOCO or US) Testing a Repaired Transducer (TOCO or US) CAUTIONS Following completion of the cable replacement procedure: LEAKAGE TEST—Perform a leakage and dielectric test on the transducer per applicable standards. FUNCTIONAL TEST—Perform a functional response test on the transducer.
Page 167: Replacing The Main Board
Serviceable Assemblies: Replacing the Main Board Replacing the Main Board Equipment Required Phillips screwdriver Main board part no. 2000243 (Model 171) part no. 15269 (Model 172) part no. 2000324 (Model 173) part no. 2000973 (Model 174) Procedure Disconnect the AC adapter from the monitor to completely remove power. Remove the monitor top cover, disconnecting the display board cable and membrane switch panel cable from J18 and J19, respectively.
Page 168: Replacing The Fecg/Iup Board
Serviceable Assemblies: Replacing the FECG/IUP Board Replacing the FECG/IUP Board Follow the instructions for “Replacing the Main Board” page 7-35 with the following exceptions: Retain the existing Main Board Mount a new FECG/IUP Board onto the existing Main Board 7-36 170 Series Monitor Revision C 2000947-004...
Page 169: Replacing The Membrane Switch Panel
Serviceable Assemblies: Replacing the Membrane Switch Panel Replacing the Membrane Switch Panel The membrane switch panel cannot be removed from the top cover without possible damage to the monitor. You must order a new top cover assembly in order to replace the membrane switch panel.
Page 170 Serviceable Assemblies: Replacing the Membrane Switch Panel Procedure Disconnect the AC adapter from the monitor to completely remove power. Follow the instructions for “Removing the Monitor Top Cover” page 7-19. Unscrew the top cover standoff and set aside. You may need a wrench to loosen the standoff.
Page 171 Serviceable Assemblies: Replacing the Membrane Switch Panel alignment tabs Figure 7-12. Top Cover Alignment Tabs alignment slots Figure 7-13. Bottom Enclosure Alignment Slots Revision C 170 Series Monitor 7-39 2000947-004...
Page 172: Replacing A Front Panel Connector
Serviceable Assemblies: Replacing a Front Panel Connector Replacing a Front Panel Connector Equipment Required Screwdriver Connector (see Table 7-14) De-soldering tool Soldering iron Solder Table 7-14. Front Panel Connectors Connector Color Part Number US/US2 Blue 212174 UA (TOCO/IUP) White 212173 FECG Dark Grey 212175...
Page 173: Servicing The Recorder
Serviceable Assemblies: Servicing the Recorder Servicing the Recorder Replacing the Printhead Equipment Required Phillips screwdriver Vernier caliper Printhead (part no. 2000133-001) Procedure Remove the AC line cord from the monitor to completely remove power. Follow the instructions for “Removing the Monitor Top Cover” page 7-19.
Page 174 Serviceable Assemblies: Servicing the Recorder Adjusting the Printhead Current Equipment Required Phillips screwdriver Digital voltmeter 30 Ω, 20 W, 5% resistor Procedure CAUTION RECORDER STATUS—Ensure the recorder remains off during this procedure. Remove the AC line cord from the monitor to completely remove power. Follow the instructions for “Removing the Monitor Top Cover”...
Page 175 Serviceable Assemblies: Servicing the Recorder Aligning the Printhead Equipment Required Phillips screwdriver Vernier caliper Printing a Continuous Test Pattern Re-connect the AC adapter cord to the monitor. Access the service setup mode: press and hold the button ; press and Setup hold the blue button;...
Page 176 Serviceable Assemblies: Servicing the Recorder Figure 7-14. Recorder Test Pattern 7-44 170 Series Monitor Revision C 2000947-004...
Page 177 For best results: Use only GE paper. Ensure paper is correctly loaded as instructed on page 4-2. Use a vernier caliper to adjust the printhead to its nominal position.
Page 178 Serviceable Assemblies: Servicing the Recorder Replacing the Recorder Motor Assembly Equipment Required Phillips screwdriver Motor assembly (part no. 15136A) Procedure Remove the AC line cord from the monitor to completely remove power. Follow the instructions for “Removing the Monitor Top Cover” page 7-19.
Page 179 Serviceable Assemblies: Servicing the Recorder Replacing the Sensor Board Equipment Required Phillips screwdriver Sensor board (part no. 15231) Sensor board insulator (part no. 2000147-001) Cable tie, x2 (part no. 608036) Cable mount adhesive back, x2 (part no. 608030) Procedure Remove the AC line cord from the monitor to completely remove power. Follow the instructions for “Removing the Monitor Top Cover”...
Page 180 Serviceable Assemblies: Servicing the Recorder 18. Replace the microswitch and secure both screws. Make sure the microswitch clicks when the drawer is closed. 19. Replace the main board mounting plate, pulling the plate forward, parallel with the roller while tightening the screws. 20.
Page 181: Boot Rom Error Codes
Boot ROM Error Codes If the error codes in the following table display during the boot process, cycle power. If the error codes reappear when you power up, phone GE Technical Support for assistance. Table 7-15. Boot ROM Error Codes...
Page 182 Serviceable Assemblies: Boot ROM Error Codes For your notes 7-50 170 Series Monitor Revision C 2000947-004...
Page 183: Peripheral Devices
Chapter 8 Peripheral Devices The 170 Series Monitor allows connection to optional peripheral equipment. This section discusses the following: Remote Marks Connectors ....... . . Telemetry Connector .
Page 184: Remote Marks Connectors
Peripheral Devices: Remote Marks Connectors Remote Marks Connectors Remote Mark, Fetal Acoustic Stimulator This receptacle is provided for connection to a Corometrics Model 146 Fetal Acoustic Stimulator. Remote Mark, Remote Event Marker This receptacle is provided for connection to an optional Corometrics Remote Event Marker.
Page 185: Telemetry Connector
Peripheral Devices: Telemetry Connector Telemetry Connector This connector is for future interfacing to the receiver of a Corometrics Model 340 Telemetry System. NOTE: The monitor, receiver, and transmitter must all be turned on. NOTE: When any telemetry mode is detected (US or TOCO), all equivalent front panel modes (US, US2, or TOCO) are ignored.
Page 186: Rs-232 Connectors
Peripheral Devices: RS-232 Connectors RS-232 Connectors Two RS-232C serial interface receptacles (RJ-45) allow connecting the 170 Series Monitor to the following devices: Critikon Model 1846/1846SX Blood Pressure Monitor Quantitative Sentinel/Perinatal System Nellcor N-400 Fetal Pulse Oximeter 115-Compatible Device Table 8-1 lists the factory default settings for each port. Refer to Customizing the Monitor on page 4-10 for information on using the service setup mode to change these settings.
Page 187 Peripheral Devices: RS-232 Connectors Ext. FSpO Select ext. FSpO for connecting to a Nellcor Fetal Pulse Oximeter. Factory The FACTORY mode is reserved for factory testing only. 115 Update Select for backward-compatibility so the 170 Series Monitor can operate in a Model 115-compatible communication mode.
Page 188 Peripheral Devices: RS-232 Connectors Critikon Model 1846/1846SX Critikon Model 1846/1846SX Monitors can be interfaced to a 170 Series Monitor to provide a printout of NBP values on the strip chart paper. Refer to Table 8-2 for the appropriate interface cable. Connect one end to an available port (1 or 2) on the 170 Series Monitor;...
Page 189 Through this interface, the 170 Series Monitor outputs FHR and UA data to a central information such as GE’s Quantitative Sentinel/Perinatal System. Annotations made at the central station can be optionally printed on the strip chart paper of the 170 Series Monitor as summarized below: Each message is preceded by a computer icon ( ).
Page 190 Peripheral Devices: RS-232 Connectors Nellcor Puritan Bennett Model N-400 Fetal Pulse Oximeter Through this interface, FSpO readings provided by an NPB Model N-400 are printed every five minutes on the strip chart paper of the 170 Series Monitor. The reading is printed in the annotation area between the top and bottom grids. A solid diamond marker, above the data, marks the time of the reading and identifies the data source as an external device.
Page 191 Peripheral Devices: RS-232 Connectors Table 8-2. External Device Summary 170 Series Interconnect Cable Cat. External Device Parameter(s) 170 Series Mode Baud Rate 1562AAO (1 foot) Critikon Model 1846/1846SX ext. BP 1562BAO (6 feet) Annotations 1558AAO (10 feet) Quantitative Sentinel System 1200 HP or HP w/notes (optional)
Page 192 Peripheral Devices: RS-232 Connectors Model 115-Compatible Communications Protocols Two options provide backward-compatibility so that the 170 Series Monitor can operate in a Model 115-compatible communication mode: 115 Update Mode: The 115 Update mode outputs all available information and ignores requests from a host computer system. 115 Transmit/Receive: The 115 Transmit/Receive mode only outputs data requested from a host computer system.
Page 193 Peripheral Devices: RS-232 Connectors 115 Update Mode All information is transmitted from the 170 Series Monitor as soon as the information becomes available. IMPORTANT DATA REQUESTS—When set to the 115 Update Mode, the 170 Series Monitor will not respond to any requests for information sent from an external (host) computer.
Page 194 Peripheral Devices: RS-232 Connectors 115 Transmit/Receive Mode Once a valid request for data is received, the 170 Series Monitor will send only the information that is requested. The selection of this information is done by sending a request stream to the 170 Series Monitor. After processing the request, the 170 Series Monitor will then send only the selected parameters to the external computer.
Page 195 Peripheral Devices: RS-232 Connectors Transmitted Data Format The format of the information transmitted from the 170 Series Monitor to the external computer is shown in Figure 8-3. NOTE: This applies to both 115 Update mode and 115 Transmit/Receive mode. The definitions of the bytes are as follows: Monitor Type This field contains a 1-byte ASCII value indicating the type of monitor sending the information.
Page 196 Peripheral Devices: RS-232 Connectors Fetal Movement: This field contains one ASCII character representing the current status of the signal: low or high. If the data byte is a 0 (30H), then the signal is low indicating no movement is detected; if the data byte is 1 (31H), then the signal is high indicating fetal movement is detected.
Page 197 Peripheral Devices: RS-232 Connectors Error Conditions Transmission Errors Transmission errors may be detected by the external computer as parity errors, framing errors (no valid stop bit), or invalid characters. There is no facility in the 170 Series Monitor to re-transmit any information found to contain an error. It is therefore up to the user to decide what action to take as a result of an error.
Page 198 Peripheral Devices: RS-232 Connectors Table 8-4. Heart Rate Modes HR1 Mode HR2 Mode ASCII Character Hexadecimal Value INOP INOP FECG INOP INOP FECG FECG < INOP > Table 8-5. Uterine Activity Modes UA Mode ASCII Character Hexadecimal Value INOP TOCO 8-16 170 Series Monitor Revision C...
Page 199 Peripheral Devices: RS-232 Connectors Cabling Information Monitor RS-232 Connector The 170 Series Monitor’s RS-232C Ports each use an 8-pin RJ-45 connector, shown Figure 8-4. The following control signals are supported: Request to Send (RTS): This output line is asserted (+12 V) whenever the 170 Series Monitor is on and operating;...
Page 200 Peripheral Devices: RS-232 Connectors Table 8-6. RS-232 Connector 1 Pin Number Signal Name Signal Description 200 mA Fused Request to Send Output from Monitor Receive Data Input to Monitor Signal Ground Signal Ground Transmit Data Output from Monitor Clear to Send Input to Monitor 200 mA Fused Table 8-7.
Page 201 Peripheral Devices: RS-232 Connectors 170 SERIES MONITOR SIDE DATA TERMINAL EQUIPMENT (DTE) SIDE 8-PIN SIGNAL NAME SIGNAL NAME 25-PIN 9 PIN 6 PIN Figure 8-5. Standard Null-Modem Cable 170 SERIES MONITOR SIDE DATA TERMINAL EQUIPMENT (DTE) SIDE 8-PIN SIGNAL NAME SIGNAL NAME 25-PIN 9 PIN...
Page 202 For your notes 8-20 170 Series Monitor Revision C 2000947-004...
Page 203: Maintenance
Chapter 9 Maintenance All equipment, no matter how reliable, needs to be maintained on a regular basis. This chapter describes general care and cleaning instructions for the 170 Series Monitor and its accessories. If an accessory is not listed, consult the manufacturer’s instructions.
Page 204: Cleaning
Maintenance: Cleaning Cleaning CAUTION PREPARATION—Unplug the monitor from the AC power source and detach all accessories from the monitor. Do not immerse accessories in any liquid. Do not use abrasive cloth or cleaners on monitor or accessories. Cleaning the Monitor Exterior To clean the exterior of the monitor, including the displays and the membrane switch panel: Wipe any fluids from the surface of the monitor.
Page 205 Maintenance: Cleaning Cleaning the Tocotransducer, Ultrasound Transducer, and Legplate CAUTIONS ABRASION—Do not use abrasive cloth, sharp objects, or abrasive cleaners. ALCOHOL—Do not use Alcohol in cleaning solutions. DISCONNECTION—Detach the transducers/cables/legplate from the monitor. IMMERSION—Do not immerse transducers/cables/legplate or hold under running water. Dampen a cloth or paper towel with one of the following products;...
Page 206 Maintenance: Cleaning Cleaning the UA Strain Gauge Remove the plastic dome. If desired, wash the transducer with sterile water or saline solution. Carefully clean the diaphragm seal with a cotton swab to remove deposits. Avoid excessive pressure since this may damage the diaphragm. If there are excessive stains on the diaphragm or sides of the transducer, remove with a cotton swab and solvents of increasing strength.
Page 207: Preventative Maintenance Inspection
Maintenance: Preventative Maintenance Inspection Preventative Maintenance Inspection Equipment Required Digital Multimeter Dielectric Tester Leakage Current Tester Aluminum Foil Ultrasound Test Body (ultrasound transducer wrapped in aluminum foil) Tocotransducer Test Body (tocotransducer wrapped in aluminum foil) FECG Test Body for Model 173 or 174 only (Shorted legplate with all three leads tied together) IUP Test Body for Model 173 or 174 only (SensorTip transducer wrapped in aluminum foil)
Page 208 Maintenance: Preventative Maintenance Inspection Cleaning Clean the monitor’s exterior. Refer to “Cleaning the Monitor Exterior” page 9-2. Clean the recorder printhead. Refer to “Cleaning the Printhead” page 7- Clean the monitor’s accessories. Refer to “Cleaning the Tocotransducer, Ultrasound Transducer, and Legplate” page 9-3.
Page 209 Electrical safety tests provide a method of determining if potential electrical hazards to the patient or operator of the device exist. Recommendations GE recommends that you perform all safety tests presented in this chapter: upon receipt of the device (monitor and its associated equipment) every twelve months thereafter...
Page 210 Maintenance: Preventative Maintenance Inspection Unit to Primary Leakage Configure a leakage tester to perform a unit AC line leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <300 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the primary leakage for the following conditions: Table 9-1.
Page 211 Maintenance: Preventative Maintenance Inspection Patient-to-Ground Leakage for US Connect an ultrasound test body to the monitor’s front panel input. Configure a leakage tester to perform a patient leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-ground leakage for the following conditions:...
Page 212 Maintenance: Preventative Maintenance Inspection Patient-to-Line Leakage for US Connect an ultrasound test body to the monitor’s front panel input. Configure a leakage tester to perform a line leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-line leakage for the following conditions:...
Page 213 Maintenance: Preventative Maintenance Inspection Patient-to-Ground Leakage for US2 Connect an ultrasound test body to the monitor’s front panel input. Configure a leakage tester to perform a patient leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-ground leakage for the following conditions:...
Page 214 Maintenance: Preventative Maintenance Inspection Patient-to-Line Leakage for US2 Connect an ultrasound test body to the monitor’s front panel input. Configure a leakage tester to perform a line leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-line leakage for the following conditions:...
Page 215 Maintenance: Preventative Maintenance Inspection Patient-to-Ground Leakage for TOCO Connect a tocotransducer test body to the monitor’s front panel input. Configure a leakage tester to perform a patient leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-ground leakage for the following conditions:...
Page 216 Maintenance: Preventative Maintenance Inspection Patient-to-Line Leakage for TOCO Connect a tocotransducer test body to the monitor’s front panel input. Configure a leakage tester to perform a line leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-line leakage for the following conditions:...
Page 217 Maintenance: Preventative Maintenance Inspection Patient-to-Ground Leakage for IUP Connect an IUP test body to the monitor’s front panel input. Configure a leakage tester to perform a patient leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-ground leakage for the following conditions:...
Page 218 Maintenance: Preventative Maintenance Inspection Patient-to-Line Leakage for IUP Connect an IUP test body to the monitor’s front panel input. Configure a leakage tester to perform a line leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-line leakage for the following conditions:...
Page 219 Maintenance: Preventative Maintenance Inspection Patient-to-Ground Leakage for FECG Connect an FECG test body to the monitor’s front panel input. FECG Configure a leakage tester to perform a patient leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-ground leakage for the following conditions:...
Page 220 Maintenance: Preventative Maintenance Inspection Patient-to-Line Leakage for FECG Connect a tocotransducer test body to the monitor’s front panel input. FECG Configure a leakage tester to perform a line leakage test. Turn ON the monitor using the monitor’s button. On/Standby Verify the following: <50 µA (132–253 VAC, or at the line voltage at your facility +10%) Record the patient-to-line leakage for the following conditions:...
Page 221 Maintenance: Preventative Maintenance Inspection Dielectric (Hi-Pot) Tests CAUTION POWER OFF—Turn OFF the 170 Series Monitor prior to performing any of the hi-pot tests. Patient–to–AC-Line Using DC Voltage for One Minute NOTE: The hi-pot tester voltage is 5.656 kVdc for these tests. Attach an US test body to the monitor’s front panel input.
Page 222 Maintenance: Preventative Maintenance Inspection Patient-to-Chassis Using AC Voltage for One Minute NOTE: The hi-pot tester voltage is 2.5 kVAC for these tests. IMPORTANT ENCLOSURE—Wrap the entire monitor enclosure in aluminum foil for these tests. Attach an US test body to the monitor’s front panel input.
Page 223 Maintenance: Preventative Maintenance Inspection Mains-to-Chassis Using DC Voltage for One Minute NOTE: The hi-pot tester voltage is 5.656 kVdc for these tests. IMPORTANT ENCLOSURE—Wrap the entire monitor enclosure in aluminum foil for these tests. Connect from line to enclosure foil. pass fail Conductive Parts Isolated from Live Parts and Enclosure Using DC Voltage for...
Page 224 For your notes 9-22 170 Series Monitor Revision C 2000947-004...
Page 225: Specifications
Chapter 10 Specifications This section contains a detailed list of the technical specifications for the 170 Series Monitor. This chapter lists specifications for the following: General Monitor ........10-2 Operating Modes .
Page 226: General Monitor
Specifications: General Monitor General Monitor Table 10-1. General Monitor Technical Specifications Category Technical Specifications Power Requirements Nominal Line Voltage: 100–230 VAC Line Frequency: 50/60 Hz (operates over 47–63 Hz) Power Consumption (maximum): ≤30 VA Monitor DC Input: 12 Vdc at 2.5 A Physical Characteristics Height: 5.75 in (14.6 cm)
Page 227: Operating Modes
Specifications: Operating Modes Operating Modes Table 10-2. Operating Mode Specifications FECG Mode Technique: Peak detecting, beat-to-beat cardiotachometer Heart Rate Counting Range: 30–240 BPM Heart Rate Resolution: ±1 BPM Artifact Elimination: Selectable, ±25 BPM artifact rejection Countable Input Signal Range: 15 µV to 2 mV peak-to-peak Offset Voltage Tolerance (Differential): ±300 mVdc maximum Maximum Common Mode Voltage:...
Page 228: Strip Chart Recorder
Specifications: Strip Chart Recorder Strip Chart Recorder Table 10-3. Strip Chart Recorder Technical Specifications Heart Rate Scale Domestic International 7 cm 8 cm Chart Width: 30 BPM/cm 20 BPM/cm Scaling: 30–240 BPM 50–210 BPM Range: 1 BPM 1 BPM Resolution: Uterine Activity Scale Strain Gauge Tocotransducer...
Page 229: Parts Lists
Parts Lists This chapter of the manual provides parts lists and block diagrams. NOTE: GE makes every effort possible to provide the most up-to-date reference documentation for your Corometrics equipment. However, in special cases involving field-installed upgrades, a drawing or parts list in this manual may not reflect the revision level of your unit’s subassemblies.
Page 230: 2000268-188, Model 171 Final Assembly
Parts Lists: 2000268-188, Model 171 Final Assembly 2000268-188, Model 171 Final Assembly Table 11-1. Model 171 Final Assembly, 200268-188 Item Part Number Description Number 2000281-001 ENCL BOTTOM SHIELDED 170 SERIES 15451AA COVER SPEAKER 140173 FOOT RUBBER .50D .26H 15222AA BRG DRAWER 15212AA PIN BEARING-170 15200A...
Page 231 Parts Lists: 2000268-188, Model 171 Final Assembly Table 11-1. Model 171 Final Assembly, 200268-188 (Continued) Item Part Number Description Number PCB MAIN SINGLE 2000243-004 U/S COMPLETE 284105 SCREW #4 PH 1/4L THD FORM 284072 SCR 4-40 PH 5/16L PHL LL STRIP SCR 4-40 FH UNDERCUT 3/16 284285 PHIL 2PS NYLON PATCH...
Page 232 Parts Lists: 2000268-188, Model 171 Final Assembly Table 11-1. Model 171 Final Assembly, 200268-188 (Continued) Item Part Number Description Number PACKAGING SLOTTED TRAY 2000893-001 170 SERIES 13984AA LBL PACKING LIST 340 2000555-001 SHLD SPEAKER - 170 410066 POLY BAG 23X26X.006 410097 TAPE SHIPPING 3IN WIDE 4281CA...
Page 233: 2000268-189, Model 172 Final Assembly
Parts Lists: 2000268-189, Model 172 Final Assembly 2000268-189, Model 172 Final Assembly Table 11-2. Model 172 Final Assembly, 2000268-189 Item Part Number Description Number 2000281-001 ENCL BOTTOM SHIELDED 170 SERIES 15451AA COVER SPEAKER 140173 FOOT RUBBER .50D .26H 15222AA BRG DRAWER 15212AA PIN BEARING-170 15200A...
Page 234 Parts Lists: 2000268-189, Model 172 Final Assembly Table 11-2. Model 172 Final Assembly, 2000268-189 (Continued) Item Part Number Description Number PCB ASSY MAIN PCB 15269E DUAL US COMP 284105 SCREW #4 PH 1/4L THD FORM 284072 SCR 4-40 PH 5/16L PHL LL STRIP SCR 4-40 FH UNDERCUT 3/16 PHIL 2PS 284285 NYLON PATCH...
Page 235 Parts Lists: 2000268-189, Model 172 Final Assembly Table 11-2. Model 172 Final Assembly, 2000268-189 (Continued) Item Part Number Description Number 13984AA LBL PACKING LIST 340 .0001 2000555-001 SHLD SPEAKER - 170 410066 POLY BAG 23X26X.006 410097 TAPE SHIPPING 3IN WIDE 4281CA LBL SERIAL# UL APPV’D-155 4281DA...
Page 236: 2001972-037, Model 173 Final Assembly
Parts Lists: 2001972-037, Model 173 Final Assembly 2001972-037, Model 173 Final Assembly Table 11-3. Model 173 Final Assembly, 2001972-037 Find Num Item Number Item Description 2007385-001 ENCL ,BOTTOM, SHIELDED-170 SERIES 15451AA COVER SPEAKER 140173 FOOT RUBBER .50D .26H 15222AA BRG DRAWER 15212AA PIN BEARING-170 15200A...
Page 237 Parts Lists: 2001972-037, Model 173 Final Assembly Table 11-3. Model 173 Final Assembly, 2001972-037 (Continued) Find Num Item Number Item Description 284105 SCREW #4 PH 1/4L THD FORM 284072 SCR,4-40,PH,5/16L,PHL,LL,STRIP SCR,4-40,FH UNDERCUT 3/16,PHIL 2PS 284285 NYLON PATCH 289516 SCR,M3X5,PH,PHIL,ZP,W/NYLOK PATCH 2000220-001 SCR PH #2 ,1/2L PHIL ZPS PLASTITE 2000221-001...
Page 238 Parts Lists: 2001972-037, Model 173 Final Assembly Table 11-3. Model 173 Final Assembly, 2001972-037 (Continued) Find Num Item Number Item Description 410097 TAPE,SHIPPING,3IN WIDE, 4281DA LABEL,C-UL HAZZARD TAG120,SERIES LABEL SERIAL NUMBER, UL & MODEL 4281EA NUMBER 408230-008 LABEL CE MARK 160019 SEALANT MED BLUE, 2000741-001...
Page 239: 2001972-038, Model 174 Final Assembly
Parts Lists: 2001972-038, Model 174 Final Assembly 2001972-038, Model 174 Final Assembly Table 11-4. Model 174 Final Assembly, 2001972-038 Find Num Item Number Item Description 2007385-001 ENCL ,BOTTOM, SHIELDED-170 SERIES 15451AA COVER SPEAKER 140173 FOOT RUBBER .50D .26H 15222AA BRG DRAWER 15212AA PIN BEARING-170 15200A...
Page 240 Parts Lists: 2001972-038, Model 174 Final Assembly Table 11-4. Model 174 Final Assembly, 2001972-038 (Continued) Find Num Item Number Item Description 284105 SCREW #4 PH 1/4L THD FORM 284072 SCR,4-40,PH,5/16L,PHL,LL,STRIP SCR,4-40,FH UNDERCUT 3/16,PHIL 2PS 284285 NYLON PATCH 289516 SCR,M3X5,PH,PHIL,ZP,W/NYLOK PATCH 2000220-001 SCR PH #2 ,1/2L PHIL ZPS PLASTITE 2000221-001...
Page 241 Parts Lists: 2001972-038, Model 174 Final Assembly Table 11-4. Model 174 Final Assembly, 2001972-038 (Continued) Find Num Item Number Item Description 410097 TAPE,SHIPPING,3IN WIDE, 4281DA LABEL,C-UL HAZZARD TAG120,SERIES LABEL SERIAL NUMBER, UL & MODEL 4281EA NUMBER 408230-008 LABEL CE MARK 160019 SEALANT MED BLUE, 2000741-001...
Page 242: 2264Aax, Button-Style Nautilus Tocotranducer Assembly Parts List
Parts Lists: 2264AAX, Button-Style Nautilus Tocotranducer Assembly Parts List (5-ft cord) 2264AAX, Button-Style Nautilus Tocotranducer Assembly Parts List (5-ft cord) Table 11-5. 2264AAX, Button-Style Nautilus Tocotransducer Assembly Parts List (5-ft cord) Find Item Number Item Description 14894A TOCO CBL ASSY OB 5' LG,WATERTIGHT 15079AA MARKING CASE BUTTON TOP-TOCO,WATERTIGHT 14790B...
Page 243: 5700Gax, Button-Style Nautilus Ultrasound Transducer Assembly Parts List
Parts Lists: 5700GAX, Button-Style Nautilus Ultrasound Transducer Assembly Parts List (5-ft cord) 5700GAX, Button-Style Nautilus Ultrasound Transducer Assembly Parts List (5-ft cord) Table 11-6. 5700GAX, Button-Style Nautilus Ultrasound Transducer Assembly Parts List (5-ft cord) Find Item Number Item Description 14895A U/S CBL ASSY 5' OB,WATERTIGHT 15081AA MARKING,CASE BUTTON TOP U/S,WATERTIGHT...
Page 244: 5700Kax, Loop-Style Nautilus Ultrasound Transducer Assembly Parts List
Parts Lists: 5700KAX, Loop-Style Nautilus Ultrasound Transducer Assembly Parts List (5-ft cord) 5700KAX, Loop-Style Nautilus Ultrasound Transducer Assembly Parts List (5-ft cord) Table 11-7. 5700LAX, Loop-Style Nautilus Ultrasound Transducer Assembly Parts List (5-ft cord) Find Item Number Item Description 14895A U/S CBL ASSY 5' OB,WATERTIGHT 15082AA MKG CASE TOP U/S,WATERTIGHT...
Page 245: 2264Dax, Loop-Style Nautilus Tocotransducer Assembly Parts List (5-Ft Cord)
Parts Lists: 2264DAX, Loop-Style Nautilus Tocotransducer Assembly Parts List (5-ft cord) 2264DAX, Loop-Style Nautilus Tocotransducer Assembly Parts List (5-ft cord) Table 11-8. 2264, Loop-Style Nautilus Tocotransducer Assembly Parts List (5-ft cord) Find Item Number Item Description 14894A TOCO CBL ASSY OB 5' LG,WATERTIGHT 15080AA MARKING CASE TOP TOCO,WATERTIGHT 14790B...
Page 246: 1509Aao/Bao, Qwik Connect Plus Legplate Assembly Parts List
Parts Lists: 1509AAO/BAO, Qwik Connect Plus Legplate Assembly Parts List 1509AAO/BAO, Qwik Connect Plus Legplate Assembly Parts List Table 11-9. 1509AAO/BAO, Qwik Connect Plus Legplate Assembly Parts List Find Item Number Item Description 2000532-001 CABLE STRAIN RELIEF 8 FEET 210227 CONTACT,MALE,24AWG,16.5MM,LG 210180 HALF-SHELL,W/CLAMP,3-5MM...
Page 248 Asia Headquarters World Headquarters GE Medical Systems GE Medical Systems GE Medical Systems Information Technologies GmbH Information Technologies Asia; GE (China) Co., Ltd. Information Technologies, Inc. Munzinger Straße 3-5 24th Floor, Shanghai MAXDO Center, 8200 West Tower Avenue D-79111 Freiburg...

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