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Notice Notice 0 The information in this document is subject to change without notice. Hewlett-Packard makes no warranty of any kind with regard to this material, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. Hewlett-Packard shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.
Notice CAUTION Like all electronic devices, this cardiograph is susceptible to electrostatic discharge (ESD). Electrostatic discharge typically occurs when electrostatic energy is transferred to the patient, the electrodes, or the cardiograph. ESD may result in ECG artifact that may appear as narrow spikes on the cardiograph display or on the printed report. When ESD occurs, the cardiograph’s ECG interpretation may be inconsistent with the physician’s interpretation.
Notice Warranty Hewlett-Packard warrants this medical product against defects in materials and workmanship for a period of three years in certain geographics, or one year with onsite support. If Hewlett-Packard receives notice of such defects during the warranty period, HewlettPackard shall, at its option, either repair or replace hardware products which prove to be defective.
Notice Printing History October 1994 Edition 1 May 1996 Edition 2 October 1998 Edition 3 v
Safety Summary Safety Summary 0 Safety Symbols Marked on the Cardiograph The following symbols are used on the cardiograph or the cart: Caution - See operating instructions Alternating current. Meets IEC type CF leakage current requirements and is defibrillator protected. (Isolated ECG input.) Equipotential (identifies independent protective earth conductor to the cardiograph). Fuse. Indicates power control for cardiograph. Hz Indicates operating frequency in cycles per second.
Conventions Used in This Manual Conventions Used in This Manual 0 WARNING Warning statements describe conditions or actions that can result in personal injury or loss of life. CAUTION Caution statements describe conditions or actions that can result in damage to the equipment or software. NOTE Notes contain additional information on cardiograph usage. TEXT .H\ Softkey represents the labels that appear on the display. represents keys on the key panel.
Preface Preface 0 This manual contains service information for the Hewlett-Packard M1770A pageWriter 300pi, PageWriter 200i, M1771A PageWriter 200, and M1772A PageWriter 100 cardiographs. The information and procedures in this manual apply to all models unless otherwise specified. This manual is organized as follows: • Chapter 1 — Introduction. Contains a general description of the cardiographs, lists of technical specifications, and lists of accessories and options.
Contents Notice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii Responsibility of the Manufacturer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv Limitation of Warranty . . . . . . . . . . . . . .
Cleaning the Electrodes and Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Caring for the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Integrated Front End Circuits/Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Defibrillator Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12 Storage and Transmission (Option #A05 0nly) . . . . . . . . . . . . . . . . . . . . . . . .
The Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removing the Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Removing the Optical Paper Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Replacing the Printhead Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction This chapter introduces you to the M1770A PageWriter 200i/300pi, M1771A PageWriter 200, and M1772A PageWriter 100 cardiographs and lists their technical specifications. WARNING These cardiographs are only to be serviced by HP qualified personnel. NOTE Safe and effective use of medical instrumentation requires periodic inspection and preventive maintenance.
PageWriter 100, 200, 200i, and 300pi Series Cardiographs Figure 1-1 M1770A/M1771A PageWriter 300pi/200i/200 Cardiograph. The PageWriter 100, 200, and 300 family of cardiographs print ECGs in Auto and Manual formats. All PageWriter cardiographs use a continuous feed, high-resolution, thermal array printer. This produces electrocardiograms on standard- size paper that can be included in patient records without cutting or mounting. ECG reports clearly show the ECG waveforms.
Inquiries M1705B Cart The optional M1705B Cart provides mobility for the PageWriter 100, 200, and 300 family of cardiographs. The large wheels make the cart easy to move, yet steady. Slots in the cardiograph’s feet and a thumbscrew secure the cardiograph to the cart rails. The tray directly below the cardiograph provides storage for the user’s guide. Storage for the power cable is built in. Other built-in cable retainers hold the patient data cable out of the way.
Specification Data Table 1-2 Electrical Specifications Parameter Specification Resolution ECG (internal) display 5 µV 128 row pixels by 240 column pixels display sweep speed 23.1 mm/sec ± 1% Input impedance greater than 2.
Specification Data Table 1-3 ECG to Paper Specifications Parameter Frequency response of PageWriter 200/200i/300pi (-3dB bandwidth) Auto ECG Specification High Pass Low Pass 0.05 Hz1 150 Hz1 100 Hz2 40 Hz 0.15 Hz1 0.5 Hz 0.05 Hz3 0.15 Hz 0.5 Hz 150 Hz3 Auto ECG1 <3 dB down at (user selectable): 0.15-150 Hz or 0.15-40 Hz Manual ECG3 <3 dB down at (user selectable): 0.05-150 Hz or 0.
Specification Data Table 1-4 Power Supply and Battery Specifications Parameter AC line frequency 115 V setting 230 V setting AC input power rating 50 and 60 Hz (nominal) 90–132 Vac 198–264 Vac 50 VA Battery voltage 6 V DC, 6.
Specification Data Table 1-6 Table 1-7 Table 1-8 Environmental Specifications Parameter Specification Temperature operating storage 50° to 104° F (10° to 40° C) 32° to 122° F (0° to 50° C) Humidity operating storage 15 to 80% RH, non-condensing 15 to 90% RH, non-condensing Pressure (altitude) operating storage 15,000 ft. (4600 m) for 2 hours 15,000 ft. (4600 m) Miscellaneous Specifications Parameter Specification Real time clock accuracy 10 to 40° C Less than 3 minutes deviation per month.
Options and Accessories Options and Accessories 1 PageWriter 100, 200, 200i, and 300pi Cardiographs These tables list the options and accessories available for the PageWriter 100, 200, and 300 family of cardiographs. Country/Region Options Each country/region option includes the appropriate power cord, voltage, printer, patient cable, and language. See Table 1-9, which shows the configuration of each country/region option.
Options and Accessories Table 1-9 Country/Region Option Configurations Country/ Region Option Labels User Manuals Printer1 AHA/ IEC Volts Power Cord2 Electrodes ABA North America English English A AHA 120 903–US Disposable ABB Europe English English English A4 IEC 220 902–Europe None ABC French Canada French French A AHA 120 903–US Disposable ABD Germany German German A4 IEC 220 902–Europe None ABE Spain Spanish Spanish A4 IEC 220 902–Europe None ABF
Options and Accessories Table 1-10 PageWriter 300pi, 200/200i and 100 Series Documentation Part Numbers Document Title Language Part Number PageWriter 100 Cardiograph User’s Guide (M1772A) English M1772-91900 French M1772-91901 German M1772-91902 Dutch M1772-91903 Spanish M1772-91904 Italian M1772-91905 Finnish M1772-91910 Chinese M1772-91908 English M1772-91900 French M1770-91901 German M1770-91902 Dutch M1770-91903 Spanish M1770-91904 Italian M1770-91905 Swedish M1770-91
Options and Accessories Table 1-10 PageWriter 300pi, 200/200i and 100 Series Documentation Part Numbers PageWriter 300pi Predictive Instruments Quick Reference Guide (M1770A with Serial # Prefix CND) Interpretive Physician’s Guide (M1770A) Interpretive Physician’s Guide - Addendum (M1770A) Predictive Instruments Physician’s Guide (M1770A with Serial # Prefix CND) English M1770-92800 French M1770-92801 German M1770-92802 Dutch M1770-92803 Spanish M1770-92804 Italian M1770-92805 Swedish M17
Options and Accessories Table 1-11 Power Cord Part Numbers Power Cord Key Table 1-12 HP Part Number 900 8120-1703 901 8120-4464 902 8120-1692 903 8120-5213 917 8120-4600 922 8120-8377 Options Option Description A05 Adds storage and transmission capability M2488A-#A70, A71, A72 StressWriter system includes PageWriter cardiograph M2488A-#C70 StressWriter system includes interface card for PageWriter cardiograph Standard Accessories Accessories included are based on model number and lo
Performance Verification and Maintenance Introduction 1 This chapter describes how to verify the cardiograph’s performance, explains preventive maintenance, presents patient safety information, and provides a performance verification checklist.
Performance Verification Visual Inspection and Power On Self Test Before beginning the inspection, press the 2Q 6WDQGE\ key to put the cardiograph in Standby mode, and unplug the power cord from the wall outlet.
Performance Verification Table 2-1 PageWriter 100 Test LED’s Test Number Test Name LED(s) lit on PageWriter 100 Comments/Expected Results 1 ROM-1 5 mm/mV OK 2 ROM-2 10 mm/mV Normally fails for 100. 3 ROM-X1 20 mm/mV OK for A#10. 4 ROM-X2 V Leads OK for A#10. 5 RAM Filter OK 6 NVRAM Auto OK 7 GA I II III Lead Group Will also flash all LEDs. OK 8 ECG FE aVR aVL aVF Lead Group OK 9 SIO II aVF V2 Lead Group OK for A#10.
Performance Verification Internal Circuitry Testing of PageWriter 200/200i/300pi These tests are performed on the internal circuitry: • Memory • Gate Array • Front-End Interface • Serial Interface Each test is described detail later in this chapter. When testing the internal circuitry of the PageWriter 200/200i/300pi, the numbers 1 through 9 and the characters A through D are displayed one at a time beginning with number 1. Each number represents a particular test.
Performance Verification CAUTION If your cardiograph is equipped with Options #A05 or #A10, do not turn it off during Test C or D. If you turn off the cardiograph while Test C or D are in process, you could lose stored ECGs, the Log of ECGs Stored, or the Log of ECGs Taken. When the tests are completed, the results are printed out in a pass/fail format on the lefthand side of the first page of the test report.
Performance Verification Table 2-5 ROM Replacement Part Numbers for PageWriter Cardiographs M1770, M1771A Serial Number Prefix CNA, CNB, or CNC,3807A or earlier Test ROM Part Number ROM 1 U205 - Main CPU Board M1770-89505 ROM 2 U206 - Main CPU Board M1770-89521 M1770-89521 M1770-89522 M1770-89523 M1770-89524 M1770-89525 ROM X1 U9 - Interface Board M2488-17901 ROM X2 U10 - Interface Board M2488-17902 Table 2-6 Language English French German Dutch Spanish Italian ROM Replacement Part Numbe
Performance Verification Table 2-7 ROM Replacement Part Numbers for PageWriter Cardiographs M1772A Serial Number Prefix CNA, CNB, or CNC,3807A or earlier Test Table 2-8 ROM Part Number ROM 1 U205 - Main CPU Board ROM 2 Not Required ROM X1 U9 - Interface Board M2488-17901 ROM X2 U10 - Interface Board M2488-17902 ROM Replacement Part Numbers for PageWriter Cardiographs M1772A Serial Number Prefix CND Test NOTE M1770-89505 ROM Part Number ROM 1 ROM 2 U205 - Main CPU Board M1770-89550 RO
Performance Verification Non-Volatile Random Access Memory (test 6) . Each 2-byte location of NVRAM is written and read with a pseudo-random pattern. This is a non-destructive test. The contents of the NVRAM are saved in RAM prior to this test, and then restored when the test is complete. The NVRAM test result is identified on the report as • NVRAM System Gate Array Test (test 7) . Various registers in the System Gate Array are read and written.
Performance Verification Flash Memory Tests (tests C and D) . The flash memory tests verify that the flash memory on the optional expansion board can be erase, and that information can be stored and retrieved. The flash memory tests are identified on the report as • FLASH1 • FLASH2 CAUTION If your cardiograph is equipped with Option #A05 or #A10, do not turn it off during Test C or D.
Performance Verification Figure 2-1 An Extended Self-Test Report Example F D B G H I J K L A M E C A. Test Results B. Character Set C. Timing Tics D. Diagonal Lines E. Stepped Bars F. Software Revision G. Printer Speed H. Printhead Voltage I. Printhead Temperature J. Battery Voltage K. Time Stamp L. Last Error M.
Performance Verification How to Read the Extended Self-Test Report Each printed page of the extended self-test contains the following information: A Test Results - See the previous section. B Character Set - Characters 0 through 255 are printed as a table 4x64 characters in size. This checks the character tables and printhead performance. C Timing Tics - Vertical lines are drawn from the bottom of the page.
Performance Verification Display Test (PageWriter 200/200i/300pi only) The display test shows test patterns on the display. Each of the following patterns appear in this order: • all pixels lit to create a black screen • no pixels lit to create a white screen • a vertical bar scrolling from left to right You must observe the display while the test pattern is running to ensure: • no burned out pixels • no random lines or dots in the display • no permanent patterns visible at normal contrast.
Performance Verification Keyboard Tests The keyboard tests are not automatically performed during the extended self-test. These must be manually performed and the results visually inspected to verify correctness. PageWriter 200/200i/300pi Keyboard Test The keyboard test for 200/200i/300pi models involves pressing each key one at a time and observing that the key character and/or key hex number is displayed on the display. The keyboard test can be performed anytime after the extended self-test has started.
Performance Verification ECG Simulation Taking an ECG using a 12-lead ECG simulator allows you to verify areas of operation that the extended self-test cannot check: • integrity of the patient cable • accuracy of the paper speed (not available on all simulators) • accuracy of the gain settings (not available on all simulators) The recorded ECG trace should look similar to the one shown in Figure 2-2.
Performance Verification Figure 2-2 12-Lead ECG from ECG Simulator (200/200i/300pi only).
Changing the Default Operating Language (200/200i/300pi Only) Changing the Default Operating Language (200/200i/300pi Only) 2 The default operating language is selected by holding down the desired key combination while turning on the instrument. Table 2-9 lists the key combinations.
Resetting the Cardiograph to the Factory Default State Resetting the Cardiograph to the Factory Default State 2 Resetting the cardiograph sets the Auto ECG report counter to 0, and resets the PageWriter 200/200i/300pi configuration to the factory default. Resetting the PageWriter 200/200i/300pi To reset the PageWriter 200/200i/300pi perform the following steps: 1. Using Table 2-9, turn the cardiograph On in a language different from the current language. 2.
Preventive Maintenance Preventive Maintenance 2 Routine maintenance of the cardiograph consists of cleaning and inspection. This should be done as needed. CAUTION The cardiograph does not require lubrication. Lubricating any part of the cardiograph could damage it or diminish its performance. Care and Cleaning The outside surfaces of the cardiograph and its accessories (except the patient cable) can be cleaned by mild soap and water or isopropyl alcohol.
Preventive Maintenance Cleaning the Keyboard Overlay Figure 2-3 1. Carefully insert a small flat-bladed screwdriver into the notches at the front edge of the keyboard overlay and pry the front edge of the keyboard overlay up. Refer to Figure 2-3. 2. Repeat with the rear notches of the keyboard overlay and remove the overlay. Removing the Keyboard Overlay A. Notches CAUTION Do not wash the keyboard overlay in hot water. Do not attempt to clean the keyboard overlay in a dishwasher. 3.
Preventive Maintenance Cleaning the Digital Array Printhead and Paper Sensor If you use Hewlett-Packard recording paper, you should not have to clean the printhead for the life of the product. If you need to clean the printhead, this is the procedure to follow.
Preventive Maintenance 2. Wipe the printhead with a foam swab dipped in 90% isopropyl alcohol. Scrub until all visible residue is removed. 3. Dry the printhead with a clean lint-free tissue. To clean the paper sensor lens: 1. From the front of the cardiograph, unlatch and open the paper door. The paper sensor lens is to the right under the printhead (see Figure 2-4). 2. Lightly wipe the paper dust off of the paper sensor lens with a dry foam swab. Do not use alcohol.
Caring for the Battery Caring for the Battery 2 The battery must be installed for proper operation of the cardiograph. Even if the cardiograph is plugged into AC power, it cannot print an ECG report without the battery. For information about removing or replacing the battery, refer to Chapter 5, Removal and Replacement.
Caring for the Battery Safety Tests The safety tests listed below are performed at the time of manufacture to assure compliance with these standards: IEC 601-1, IEC 601-2-25, UL 544, and CSA 22.2 No. 125.
PageWriter 100, 200/200i, and 300pi Series Performance Verification Matrix PageWriter 100, 200/200i, and 300pi Series Performance Verification Matrix 2 The following Performance Verification matrix lists all the tests and inspection procedures which must be performed on the M1770A, M1771A, or M1772A cardiographs after servicing. Instructions for executing each test or inspection are described in this manual.
PageWriter 100, 200/200i, and 300pi Series Performance Verification Matrix Table 2-10 Performance Verification: PageWriter 300pi/200i/200/100 (M1770A, M1771A, M1772A) Test Block Name Test or "Inspection" to Perform Expected (Passing) Test Results Data to Record x=p (pass) or f (fail) Extended Self Test Function Tests (F) Run Extended Self Test; verify: • ROM-1 • ROM-X1 (for A05 & A10) • RAM "OK" for tests applicable to the device and the device’s options F:x example: F:p Note: ROM-2 will be "OK" f
PageWriter 100, 200/200i, and 300pi Series Performance Verification Matrix Table 2-10 Performance Verification: PageWriter 300pi/200i/200/100 (M1770A, M1771A, M1772A) Test Block Name Printer Test (P) for M1772 Test or "Inspection" to Perform Verify: • straight diagonal lines Expected (Passing) Test Results All criteria visually verified.
PageWriter 100, 200/200i, and 300pi Series Performance Verification Matrix Table 2-10 Performance Verification: PageWriter 300pi/200i/200/100 (M1770A, M1771A, M1772A) Test Block Name System Safety (S) Use Safety Analyzer Test or "Inspection" to Perform Check: Chassis-to-Ground Resistance Data to Record x=p (pass) or f (fail) Expected (Passing) Test Results < 200 mΩ aaa Groundwire Leakage Current (Normal condition) <500 uA (<300uA UL) bbb Groundwire Leakage Current (Single Fault) <1000 uA cccc
PageWriter 100, 200/200i, and 300pi Series Performance Verification Matrix 2-28
Theory of Operation This chapter contains an overview of the cardiograph operation, and circuit descriptions of the major subassemblies. Except as noted, the information in this chapter applies to the M1770A PageWriter 200i/300pi, the M1771A PageWriter 200, and the M1772A PageWriter 100. The last section in this chapter describes the Option #A05 printed circuit assembly.
Circuit Descriptions Power-off The power-off sequence is software controlled. The power-off sequence is initiated when the 2Q 6WDQGE\ key is pressed, battery time-out occurs, or the battery is too low to continue. At power-off, the software begins housekeeping tasks such as turning off the printer, disabling the keyboard, and turning off the display, if present. When the housekeeping is complete, the software instructs the System Gate Array to turn off the Switched 5V supply.
The Patient Cable Figure 3-1 Simplified System Block Diagram The Patient Cable 3 The patient cable used in the PageWriter 100/200/200i/300pi family is a passive design using no active components. The leadwires each contain a resistor designed to protect the instrument from the energy used in defibrillation. The cable simply conducts the analog ECG data from the patient to the ECG Front End on the CPU Assembly Board.
CPU Assembly CPU Assembly 3 This discussion of the CPU assembly covers the following circuits: • CPU • System Gate Array • Serial EEROM • System Memory (DRAM) • ROM • Printer Gate Array/SRAM • Analog/Digital Converter • System Expansion Connector The block diagram in Figure 3-2 shows these circuits and how they interconnect.
CPU Assembly CPU/System Oscillator The CPU (Central Processing Unit) is the processing engine for the instrument. The microprocessor used is the Intel 80960SA, a 32 bit microprocessor with a 32-bit address bus and a 16-bit external data bus (32 bit internal data bus). The lower 16 bits of the address bus are multiplexed with the data bus; these lines are de-multiplexed by the System Gate Array. The processor operates at 16 MHz off of a 32 MHz System Oscillator.
CPU Assembly DMA for ECG Data The System Gate Array receives data from the ECG Front End in serial form. When 16 bits have been received, the System Gate Array places the CPU in a HOLD state, and generates the necessary address and control signals needed to write the data into the System Memory (DRAM). After the data are successfully written, the HOLD state is discontinued and the CPU resumes its processing.
CPU Assembly NVRAM Interface The NVRAM contains 1K bits of non-volatile storage for the cardiograph configuration. Keyboard Interface The passive Keyboard is scanned by the System Gate Array for keypresses. The LED(s) are also driven by the System Gate Array. The software is responsible for determining which keyboard is loaded and configuring the instrument for proper operation.
CPU Assembly timing and the printer RAM, regulates motor speed, monitors printhead temperature, monitors the battery condition, and provides the interface between the printer and the system CPU. The printer RAM consists of 32K of static RAM used to store printer data and the printer look-up table data. The look-up table data is used to compensate the motor drive signals and the printer enable pulses for variations in the operating environment.
Power Supply Power Supply 3 The Power Supply connects the instrument to the AC line to charge the battery and power the circuitry. It conditions and regulates all power supplied to the Main Board. Figure 3-3 Power Supply Block Diagram Voltage Selector The voltage selector connects the line input to the proper windings on the Power Transformer to produce the correct secondary voltage at the output of the Transformer.
Power Supply Rectifier/Filter This circuitry rectifies and filters the AC voltage to produce a DC voltage for the rest of the power supply. Switch-Mode Battery Charger The battery charger converts the output from the Rectifier/Filter to one of two levels. The first level is called the float voltage and equals 6.85 VDC (nominal at 25 C). The second level, called the overcharge voltage, is 7.4 VDC (nominal at 25 C). Both of these levels are temperature compensated.
ECG Front End ECG Front End 3 The ECG Front End provides the interface between the system and the patient. It electrically isolates the patient to prevent excess leakage current, protects the system from defibrillator and electrostatic discharges, and converts the analog electrical signals present on the patient to digital samples for processing and printing.
ECG Front End Opto-Isolators Opto-Isolators pass the digital sample data from the patient-connected circuitry to the rest of the instrument, providing electrical isolation. Integrated Front End Circuits/Oscillator The Integrated Front End Circuits sample the patient leads at 4.096M samples per second per lead. The data are then filtered to 12 bits at 5 µV/LSB and 2 msec per sample. The circuits include protection circuitry, gain, A/D conversion, and Oscillator control.
Storage and Transmission (Option #A05 0nly) Storage and Transmission (Option #A05 0nly) 3 The Option #A05 PC assembly plugs into the cardiograph expansion slot, where it connects to the main PC assembly as shown in Figure 3-1. The cardiograph main board provides power and access to the cardiograph system electronics. The Option #A05 PC assembly contains all the circuitry needed to store and transmit ECGs.
Storage and Transmission (Option #A05 0nly) Figure 3-6 Option #A05 PC Assembly Block Diagram M177X Expansion Connector 18.432 MHz Oscillator Gate Array Serial Port Connector 1 Dual UART Address RS-232 Drivers Data SYS Control GA Control ROM-X1 256K x 16 ROM-X2 256K x 16 FLASH 1 1M x 16 FLASH 2 1M x 16 Serial Port Connector 2 VPROG Supply M177XA Expansion Connector The expansion connector on the Option #A05 PC assembly mates with the M177XA cardiograph expansion connector.
Storage and Transmission (Option #A05 0nly) Flash1, Flash2 FLASH1 and FLASH2 are 1M x 16 bit flash ROMs. The gate array provides control and timing functions required to interface these parts to the address and data bus. FLASH1 is used for non-volatile ECG storage. FLASH2 is provided for expansion memory. It is not normally present on the Option #A05 printed circuit assembly.
Storage and Transmission (Option #A05 0nly) 3-16
Troubleshooting Introduction 3 This chapter provides information for localizing cardiograph problems to the subassembly level. This information is designed for use with the cardiograph’s Extended Self-test to help you efficiently repair the cardiograph with a minimum of equipment. Maintenance Philosophy 3 The maintenance philosophy for the cardiograph is subassembly replacement. Replaceable subassemblies are identified in Chapter 6, “Parts List”.
Test Tools Test Tools 3 Two troubleshooting tools are provided with each instrument: • patient cable test tool (M1770-87908) • front end and transmission test tool (M1770-87909, Rev. B) Patient Cable Test Tool (M1770-87908) This tool is attached inside the battery compartment, beneath the battery. To locate it, open the battery compartment door and lift the battery. This tool is used to short the lead wires together to test lead wire integrity.
The Error and Event Logging The Error and Event Logging 3 The last error that was displayed can be printed by starting the Extended Self-test. The error code is useful in diagnosing what was last wrong with the cardiograph. See “How to Read the Extended Self-Test Report” in Chapter 2 for the location of the last error on the Extended Self-test report. The last 46 events recorded in the Events Log are also printed on the Extended Self-Test Report for cardiographs equipped with Option #A05.
Troubleshooting Tables PageWriter 100 Error Message Communication The PageWriter 100 communicates the following error messages with these corresponding LED’s: Leads off Check Paper Supply Printer Door Open All Manual lead group LED’s blink alternately with $XWR LED. The current &KDUW 6SHHG LED blinks. The current &KDUW 6SHHG LED blinks. Troubleshooting Tables 3 The troubleshooting tables in this section help you to localize a fault and correct it.
Troubleshooting Tables CAUTION Before removing or inserting any board or connector, make sure AC power is off and the battery is removed. The error codes listed below appear on the extended self-test report in the last error column or in the event log (Option #A05 only) described in Chapter 2. Table 4-1 Error Codes Error # Definition 1010, 1217, 1221, 5223 Memory allocation fault Corrective Action 1. Turn off, wait 30 seconds, turn on. 2. Retry the operation.
Troubleshooting Tables 2 Table 4-2 Symptom AC indicator not lit. Cardiograph doesn’t run on battery, but runs on AC. Cardiograph won’t power up on AC or battery. Battery does not charge. Battery capacity too low. Cardiograph turns itself off while plugged into AC power. Power Supply and Battery Possible Cause Corrective Action Power cord unplugged. Plug in power cord. AC line voltage switch in wrong position. Move to correct position. One or both AC fuses are blown. Replace AC fuse(s).
Troubleshooting Tables Table 4-2 Power Supply and Battery Symptom Possible Cause Corrective Action Low Battery light or Low Battery message remains on during extended self-test. Low battery or defective battery. Charge or replace battery. Battery fuse is blown. Disconnect the battery and visually inspect the battery fuse on the battery. Replace the battery, if necessary. Battery charger is defective. Replace power supply assembly Low Battery light or Low Battery message blinks. Low battery.
Troubleshooting Tables Table 4-3 Symptom Patient Cable and ECG Front End Possible Cause Corrective Action Good calibration pulse in channels where traces are not good. Faulty operator technique; poor electrode contact Refer to Table 6-2 in user’s manual. Defective leadwires. Replace patient cable. A lead is missing — dotted line on trace. Defective ECG front end. Replace CPU assembly. Faulty operator technique; poor electrode contact. Refer to Table 6-2 in user’s manual. Defective leadwires.
Troubleshooting Tables NOTE You can use the patient cable test tool and the ECG front end test tool to determine whether a problem is caused by a poor patient to electrode connection, a defective cable or a defective cardiograph. See the section titled “Test Tools” in this chapter for more information about using the patient cable test tool. Table 4-4 CPU Assembly Symptom Possible Cause Corrective Action System turns on but won’t run. Power supply OK. A cable is not fully seated.
Troubleshooting Tables Table 4-5 Printer Symptom Possible Cause Corrective Action Message: Printer door open or Door is ajar. Close door. the current Chart Speed ing. A printer cable is not fully seated. Reseat connectors J303 through J306. Printhead contact switch clip or leaf spring touching contact post. Check leaf spring behind printhead and contact post. Defective sensor assembly. Replace sensor assembly. Defective door-detect circuit. Replace CPU assembly.
Troubleshooting Tables Table 4-5 Printer Symptom Possible Cause Corrective Action Printed data are garbled. A printer cable is not fully seated. Reseat connector J304. Defective printhead. Replace printhead assembly. Defective component in data path. 1.Replace printhead control cable. 2. Replace CPU assembly. Poor print quality or some dots not printing. Some dots always on. Table 4-6 Dirty printhead. Clean printhead. Loose ESD brush fibers. Remove loose brush fibers and clean printhead.
Troubleshooting Tables Table 4-7 Storage (Option #A05 0nly) Message Possible Cause Possible Solutions ECG too noisy to store Poor electrode contact. Dry or dirty electrodes. Use new electrodes. Abrade skin. Reapply electrodes. Check expiration date on disposable electrodes. Patient moving or not relaxed. Reassure and relax the patient. Press the Filter key if it is configured for Artifact. Lead wires may be picking up interference from poorly grounded equipment near the patient.
Troubleshooting Tables Table 4-8 Transmission (Option #A05 only) Message Possible Cause Possible Solutions Telephone busy, waiting to redial Busy telephone ay remote site. Normal event. The cardiograph will redial, waiting 30 seconds between attempts, until the line is open or until the operator stops the transmission.
Troubleshooting Tables Table 4-8 Transmission (Option #A05 only) Message Possible Cause No modem at remote site The local modem could not complete the connection. The most likely causes are: 1. Telephone cable disconnected from local modem. 2. Remote modem turned off or disconnected from telephone line. 2. Be sure the remote modem is turned on and connected to the telephone cable. 3. Retry the transmission. 4. Excessive noise on the telephone line. 4. Retry the transmission. 5.
Troubleshooting Tables In addition to the error codes listed above, the following event codes are displayed on the extended self-test report for cardiographs equipped with Option #A05. Table 4-9 Event Codes (Option #A05 only) Event # Definition Corrective Action 1223 PageWriter XLi record corrupted during transmission. This code is followed by an sub-error code. Retry the transmission. 3573 1. The battery was removed when the cardiograph was not plugged in to AC power. Replace the battery. 2.
Troubleshooting Tables Event # Definition Corrective Action 5160, sub codes 10 and 11 Check cable. (This message appears when the transmission type is Direct or Direct SCP) Check that at least one of the modem’s LEDs is on. Check that the data cable is attached to the modem and to the cardiograph’s RS-232 port. Check operation of the RS-232 port. Check modem and cable. (This message appears when the transmission type is Modem or Modem SCP.) 5161 Transmission stopped unexpectedly.
Troubleshooting Tables Event # Definition Corrective Action 9030-9035, 90429045, 9050, 9051, 9069-9085 Direct transmission protocol error. Retry transmission. 9038 A non-specific error occurred during transmission. Retry transmission at 2400 bps. 9046 Remote device not supported. Verify that the remote site is compatible with the PageWriter cardiograph. 9047-9049 Requested an ECG from an unrecognized device. Verify that the remote site is a TraceMaster ECG Management System.
Troubleshooting Tables Table 4-10 Recorder Problems Problem Corrective Action Is the cardiograph turned on? The LCD screen should be on. Use the shift and up/down key to increase/decrease intensity. Is the AC power light on? If the cardiograph is plugged in and the AC light is not on, check fuses. Is the battery adequately charged? The low battery message (in the upper-left corner of the screen) will appear if the battery is not charged.
Testing the Power Supply Testing the Power Supply 4 Use this procedure to check the voltages produced by the power supply. The cardiograph must be connected to AC power to test all the power supply voltages. All the voltage measurements are taken with respect to ground, unless indicated. Refer to Figure 4-2 for voltage test point locations.
Testing the Power Supply 2Q 6WDQGE\ 8. Turn the cardiograph On by pressing . 9. Measure SW+5V between ground and the point marked SW+5V. It should read +5 Vdc. Its presence confirms the proper operation of the switched 5 volt regulator and boost regulator. 10. Turn the cardiograph to Standby. 11. Unplug the cardiograph from AC power. 12. Look on the first page of the Extended Self-test printout and verify that the printhead voltage is approximately 26.1 Vdc.
Testing the Power Supply Figure 4-2 Voltage Test Locations 4-21
Testing the Power Supply 4-22
Removal and Replacement Introduction 4 This chapter contains procedures for removing and replacing these cardiograph subassemblies: • battery • keyboard and the keyboard display assembly • top cover assembly • printer drive assembly • printhead assembly • CPU assembly • power supply assembly • internal cabling • #A05 storage and transmission assembly NOTE The way in which wires and cables are routed and dressed inside the main chassis plays an important part in reducing electromagnetic and radio frequen
The Battery NOTE The directions in this chapter generally assume you are facing the front of the cardiograph as you work. Thus, for example, the “left side of the cardiograph” means “your left side as you face the front of the unit.” The Battery 4 This section explains how to remove and replace the battery. These procedures apply to all units. Removing the Battery To remove the battery: 1. Turn the cardiograph to Standby. 2. Unplug the cardiograph from AC power. 3.
The Battery Figure 5-1 Removing the Battery Door.
The Keyboard Assembly The Keyboard Assembly 5 This section explains how to remove and replace the keyboard assembly. The keyboard procedures apply to all models. The keyboard display procedures only apply to PageWriter 200/200i/300pi. Note that replacement part numbers for keyboard assembly components vary with the unit serial number. Refer to the Part List section of this manual to verify replacement part numbers.
The Keyboard Assembly Figure 5-2 Removing the Keyboard Overlay A. Overlay notches 5. Figure 5-3 Using two screwdrivers, place the blade of one screwdriver on the leftmost latch of the keyboard assembly and push toward the rear of the cardiograph. See Figure 5-3. Carefully insert the blade of the second screwdriver in a notch to the right or left of the latch and lift up on the keyboard assembly. The leftmost latch should unlatch. Repeat with the center and rightmost latches. Removing the Keyboard. A.
The Keyboard Assembly CAUTION 6. Carefully lift the assembly and tilt it until the keyboard and control board are accessible. 7. Disconnect the keyboard ribbon cable from J201 on the control board. 8. Disconnect the green wire from the keyboard. 9. Remove the keyboard. Do not remove the keyboard circuit board from the keyboard bezel. Removing the board can impair the long-term reliability of the cardiograph. Removing the Keyboard Flexible Circuit To remove the keyboard flexible circuit: 1.
The Keyboard Assembly Replacing the Keyboard To replace the keyboard, perform the following steps: CAUTION 1. Connect the green wire to the spade connector on the keyboard. 2. Connect the keyboard ribbon cable to J201 on the control board. 3. Position the top of the keyboard so the four tabs on the top of the keyboard frame are placed under the lip on keyboard well. 4. Press down on the base of the keyboard until each latch is latched.
The Top Cover Assembly The Top Cover Assembly 5 This section describes how to remove and replace the top cover assembly. The top cover assembly includes the upper chassis, the printer door, and the printer assembly. Figure 5-4 Interior Details of Top Cover Removal A. Chassis screw B. Control board screw C. Printer drive assembly Opening and Removing the Top Cover Assembly To open the top cover assembly: 1. Perform the procedures Removing the Battery and Removing the Keyboard Assembly. 2.
The Top Cover Assembly WARNING The capacitors on the connection assembly next to the control board store hazardous amounts of energy during AC and battery operation. Be careful not to touch any of the exposed capacitor connections. 6. Disconnect control board connector J303 by grasping all the wires of the connector and gently pulling straight up. Repeat with connectors J304, J306, and capacitor board connector J4. 7.
The Printer Door Assembly The Printer Door Assembly 5 This section describes how to remove and replace the printer door assembly. Figure 5-5 Removing the Printer Door Retainer Clip A. Retainer clip Removing the Printer Door Assembly To remove the printer door assembly: 1. Release the door latch and slide the printer door out to the first stop. 2. Compress and remove the plastic retainer clip visible at the end of the front guide rail, as shown in Figure 5-5. 3. Slide the door out of the rails.
The Printer Drive Assembly Replacing the Printer Door To replace the printer door, perform the above procedure in reverse order. NOTE Be sure to orient the ridges of the retainer clip with the grooves in the rail prior to replacing the clip, as shown in Figure 5-5. The Printer Drive Assembly 5 This section describes how to remove and replace the printer drive assembly. Removing the Printer Drive Assembly To remove the printer drive assembly: NOTE 1.
The Printer Drive Assembly Replacing the Printer Drive Assembly To replace the printer drive assembly: • If necessary, reinstall the gears. The gears are arranged on the shafts in the gear housing as shown in Figure 5-6. Each gear has a number molded into it. That number corresponds to a number molded into the gear housing next to the appropriate shaft. Insert gears with molded numbers facing up. • Pay special attention to gear #1. The top of the gear has a short lip molded close to the teeth.
The Printhead Assembly The Printhead Assembly 5 This section describes how to remove and replace the printhead assembly. Removing the Printhead Assembly To remove the printhead: CAUTION Figure 5-7 Use an electrostatic wrist band or other approved method for protection against electrostatic discharge when disconnecting and handling the printhead assembly. 1. Perform the procedures Removing the Battery and Removing the Keyboard Assembly. 2. Perform the procedure Removing the Printer Door Assembly.
The Printhead Assembly 8. Carefully slide the printhead assembly up and out of the printer well. Pull the two bundles of wires and the ground wire from the slot in the top cover. Refer to Figure 58. 9. Using a Torx T-10 screwdriver, remove the four screws on the back side of the printhead assembly. Note the position of the ring terminal on the ground wire. 10. Disconnect the two printhead cables and the ground wire from the printhead assembly. Figure 5-8 Removing the Printhead Cover and Printhead.
The Printhead Assembly Figure 5-9 5. Push the lens through the mounting hole. 6. Finish removing the sensor by pulling the sensor through the mounting hole. Removing the Optical Paper Sensor A. Printhead switch pin Replacing the Printhead Assembly To replace the printhead assembly, perform the above procedure in reverse order. See Figure 5-11 for the correct positioning of the printhead. 1. Tuck the printhead wires behind the hooks on the printer drive assembly. 2.
The Printhead Assembly Figure 5-10 Replacing the Foam Block Figure 5-11 Positioning of the Printhead A. Printhead switch pin B. Printhead C.
The Control Board Assembly The Control Board Assembly 5 This section describes how to remove and replace the control board assembly. This procedure applies to all units. Removing the Control Board Assembly To remove the control board assembly: CAUTION NOTE Use an electrostatic wrist band or other approved method for protection against electrostatic discharge when disconnecting cables from and handling the control board assembly. 1.
The Power Supply The Power Supply 5 This section explains how to remove and replace the power supply. CAUTION Use an electrostatic wrist band or other approved method for protection against electrostatic discharge when handling the keyboard assembly and power supply. Removing the Power Supply To remove the power supply: Figure 5-12 1. Perform the procedures Removing the Battery and Removing the Keyboard Assembly. 2. Perform the procedure Opening and Removing the Top Cover Assembly.
The Power Supply 5. Separate the power supply from the lower case. 6. Disconnect connector J2 from the power supply by grasping all the wires of the connector and pulling up. Repeat with connector J3. Replacing the Power Supply Assembly To replace the power supply assembly, perform the above procedure in reverse order. Figure 5-13 shows how to correctly install the battery connector.
The Fuses The Fuses 5 To replace the AC fuses: Figure 5-14 1. Unplug the cardiograph from AC power. 2. Turn the cardiograph bottom-side up. 3. Locate the two AC fuse holders on the bottom of the cardiograph, as shown in Figure 5-14. 4. Using a screwdriver, turn the fuse cap 1/2-turn counter-clockwise. As the fuse cap is untwisted, it extends above the surface of the cardiograph case. 5. Pull the fuse cap straight up approximately 2-1/2 cm (1-inch), until it stops. 6. Remove the fuse.
The Internal Cables The Internal Cables 5 Cabling between the power supply board, the control board, the capacitor board, and the printhead has changed since the PageWriter 100, 200, 200i, and 300pi cardiographs were introduced. The cabling for your cardiograph may be different from the replacement parts you are installing. Refer to the exploded drawings and replacement parts lists in Chapter 6 for an explanation of the changes.
The Internal Cables 11. Hold the cables in this position while sliding the power supply board into its guide slots in the lower case. Be careful not to pinch the cables between the lower case and the bottom edge of the board. 12. Be sure the bottom edge of the power supply board is seated in the lower case. Tighten the ground lug nut. 13. Hook the fold-over tabs of the plastic insulator sheet over the top of the power supply board. 14.
The Storage and Transmission Board Assembly Replacing the Printer Cables More detailed instructions for replacing the printhead power cable and the paper sensor cable are found in “The Printhead Assembly” section of this chapter. This section includes notes about installing and routing the cables. The cable connecting the printhead and the capacitor board has changed since the PageWriter 100, 200, and 200i cardiographs were introduced.
The Storage and Transmission Board Assembly 4. When the storage and transmission board assembly has been pried out at least 0.25 inches, it should slide out freely. 5. Install the new storage and transmission board assembly by sliding it between the guides in the expansion slot. Be sure the assembly is aligned between the guides. 6. The board assembly should slide freely until the last 0.25 inches. 7.
Parts Lists Introduction 5 This chapter contains the parts lists for the cardiograph and cart. The numbers on each figure or exploded view refer to the parts list on the facing page.
Ordering Information Ordering Information 5 You can order any of the parts listed through your local Hewlett-Packard Sales/Service Office listed below. In the United States and Canada you can call the Direct Customer Order Center toll-free at 1-800-227-8164. In the United States, you can order medical supplies for the cardiograph by calling tollfree 1-800-225-0230.
Calling for Service Calling for Service 5 Here are the numbers you can use to call Hewlett-Packard Service for technical assistance. United States of America: Latin America: Hewlett-Packard Company Medical Products Group Headquarters 3000 Minuteman Road Andover, Massachusetts Hewlett-Packard Latin America 5200 Blue Lagoon Drive 9th Floor Miami, Florida 33126 (305) 267-4220 Medical Customer Information 1-800-934-7372 Canada: Hewlett-Packard (Canada) Lts.
Parts List Parts List 5 NOTE All references to AHA mean that the color code conforms to recommendations of the American Heart Association. NOTE All references to IEC mean that the color code conforms to International Electrotechnical Commission Standards. Refer to Table 1-9 for your geographical location. Table 6-1 Part Numbers for Rebuilt Units Description Opt. Lang. (Paper) M1770A Serial # Prefix CND PageWriter 300pi ABA ABK Inter.
Parts List Table 6-1 Part Numbers for Rebuilt Units Description Opt. Lang. (Paper) M1770A Serial # Prefix CND PageWriter 300pi ABZ Italian (Metr) M177068505 M177068405 M177168405 M177268405 M177068415 M177068515 M177168415 ABX Finn. M177068509 M177068409 M177168409 M177268409 M177068419 M177068519 M177168419 ABS Swed. (Metr) M177068506 M177068406 M177168406 N/A M177068416 M177068516 M177168416 ABN Norw. (Metr) M177068508 N/A N/A N/A N/A M177068518 N/A AB2 Chin.
Parts List Figure 6-1 Patient Cable Exploded Diagram 6-6
Parts List Table 6-2 Patient Cable Parts List Ref. No. Description Part No. 1 Patient cable, AHA1 M2461A Patient cable, IEC1 M2462A 2 3 Color ring set AHA (1 set of 20 rings and 2 lead separators) M1770-89501 IEC (1 set of 20 rings and 2 lead separators) M1770-89502 Lead separator (2 required) M1700-47228 1Includes 2 and 3.
Parts List Figure 6-2 Main Assembly Exploded Diagram 6-8
Parts List Table 6-3 Main Assembly Parts List Ref. No. Description 1 Keypanel assembly 2 Part No.
Parts List Figure 6-3 Bottom Case Exploded Diagram Figure 6-4 Storage and Transmission Board 16 6-10
Parts List Table 6-4 Bottom Case Assembly Parts List (Serial Number Prefix CNA, CNB, CNC, 3807A or earlier) Ref. No. Description Part No.
Parts List Figure 6-5 Bottom Case Exploded Diagram Figure 6-6 Storage and Transmission Board 16 6-12
Parts List Table 6-6 Bottom Case Assembly Parts List (Serial Number Prefix CND) Ref. No. Description Part No.
Parts List Figure 6-7 Bottom Case–External Exploded Diagram 6-14
Parts List Table 6-8 NOTE Bottom Case Assembly—External View Parts List Ref. No. Description Part No. 1 Battery, 6V (includes item 1a) M2460A 1a Fuse (10 A, 35 V) 2110-0930 2 Door, battery M1770-47203 3 Foot, plastic (4 req’d) 0403-0767 4 Screw, M3 X 0.5 8mm long (7 req’d) 0515-0372 5 Cover, option slot M1770-47211 The battery door assembly does not include the door label. To get the label, order the case label set for the language needed.
Parts List Figure 6-8 Upper Case Exploded Diagram 6-16
Parts List Table 6-9 Upper Case Assembly Parts List Ref. No. Description Part No. 1 Gear plate and motor assembly M1770-67400 2 Screw, M3 X 0.
Parts List Figure 6-9 M1770A/M1771A Keyboard Exploded Diagram 6-18
Parts List Table 6-10 Ref. No. M1770A/M1771A Keyboard Assembly Parts List Description Part No. (S/N Prefix CNA, CNB, CNC 3807A or earlier) Part No.
Parts List Figure 6-10 M1772A Keyboard Exploded Diagram 6-20
Parts List Table 6-11 M1772A Keyboard Assembly Parts List Ref. No. 1 2 Description Part No.
Parts List Figure 6-11 M1705B Cart Exploded Diagram.
Parts List Table 6-12 Ref. No. M1705B Cart Parts List Description Part No. Cart assembly M1705-69500 1 Retainer cap (2 req’d) 0590-1977 2 Screw, tpg. 6-19 (10 req’d) 0624-0400 3 Screw, tpg.
Parts List 6-24
Parts List 6-25
Parts List 6-26
Parts List 6-27
Parts List 6-28
Parts List 6-29
Parts List 6-30
Parts List 6-31
Parts List 6-32
Connector Pin Assignments The tables in this appendix list the pin assignments for each connector on the CPU assembly and the power supply boards. Following each table is a dictionary of the signal names listed in the table. Signal names that begin with a lowercase n are active low signals. NC means no connection to a pin. Refer to Figure 3-1 to see how the system interconnects.
CPU Assembly Connectors Table A-1 NOTE Control Board J201 to M1770A/71A Keyboard and Keyboard Display (LCD) Connector J101 Pin Signal Pin Signal Pin Signal 1 ground 15 ROWSA_1 28 CP 2 KEYIN7 16 ROWSD_0 29 ground 3 ROWSG_0 17 ground 30 KEYIN0 4 ROWSB_0 18 KEYIN4 31 LOAD 5 ground 19 ROWSD_1 32 DF 6 KEYIN1 20 DD0 33 YD 7 ROWSC_1 21 ground 34 ONSTBY 8 ROWSA_0 22 KEYIN5 35 ACONLED 9 ground 23 DD1 36 DOFF 10 KEYIN2 24 DD2 37 VCCV 11 ROWSB_1 25
CPU Assembly Connectors Signal Definition +5KBD 5 volt supply for keyboard assembly. ACONLED AC on LED. Drives the AC indicator LED on the keyboard. CP LCD Clock pulse. DD0-DD3 Four data bits for keyboard LCD. DF LCD frame inversion signal. DOFF Signal to blank LCD (active low). ground ground. KEYIN0-KEYIN7 Sense lines for key contact scanning. LOAD LCD row latch. ONSTBY Signal generated by On-Standby ROWSA_0-ROWSD_0 Drive lines for key contact scanning.
CPU Assembly Connectors Table A-2 M1770A/71A Keyboard Connector J102 to LCD Module Pin Signal Pin Signal 1 DF 9 DD2 2 Reserved 10 DD3 3 ground 11 +5KBD 4 ground 12 LOAD 5 CP 13 VCCV 6 DOFF 14 YD 7 DD0 15 VSS 8 DD1 Signal Definition CP LCD Clock pulse. DD0-DD3 Data bits for LCD. DF LCD frame inversion signal. DOFF Signal to blank LCD (active low). LOAD LCD row latch. VCCV Contrast control voltage. YD LCD frame sync.
CPU Assembly Connectors Table A-3 Control Board J201 to M1772A Keyboard Connector J101 Pin Signal Pin Signal Pin Signal 1 ground 15 ROWSA_1 28 LED11 2 KEYIN7 16 LED5 29 ground 3 ROWSG_0 17 ground 30 KEYIN0 4 LED1 18 KEYIN4 31 LED12 5 ground 19 LED6 32 LED13 6 KEYIN1 20 LED7 33 LED14 7 LED4 21 ground 34 ONSTBY 8 ROWSA_0 22 KEYIN5 35 ACONLED 9 ground 23 LED8 36 LED15 10 KEYIN2 24 LED9 37 N.C.
CPU Assembly Connectors Signal Definition +5KBD 5 volt supply for keyboard assembly. ACONLED AC on LED. Drives the AC indicator LED on the keyboard. ground ground. KEYIN0-KEYIN7 Sense lines for key contact scanning. LED1 AUTO LED signal. LED2 MANUAL (I, II, III) LED signal. LED3 MANUAL (aVR, aVL, aVF) LED signal. LED4 MANUAL (II, aVF, V2) LED signal. LED5 MANUAL (V1 - V6) LED signal. LED6 V Leads LED signal. LED7 Filter LED signal. LED8 ECG Size 10mm/mv LED signal.
CPU Assembly Connectors Table A-4 Control Board Connector J304 to Printhead Logic Pin Signal Pin Signal 1 DATA_OUT 8 nSTROBE3 2 FSW_+5V 9 nSTROBE4 3 GROUND 10 PRCLK 4 THERMISTOR 11 unlatch 5 THERMISTOR 12 DATA 6 nSTROBE1 13 N.C. 7 nSTROBE2 Signal Definition DATA Print data to printhead. DATA_OUT Print data output from printhead. FSW_+5V Filtered switched +5 volts. nLATCH Printhead latch — latches a line of print data.
CPU Assembly Connectors Table A-5 Control Board Connector J303 to Paper Sensor Pin Signal Pin Signal 1 DOOR 4 GROUND 2 GROUND 5 DETECTOR 3 EMITTER Table A-6 Signal Definition DETECTOR Paper sensor detector. DOOR Indicates the state of the printer compartment door. High when door closed. EMITTER Paper sensor emitter.
CPU Assembly Connectors Table A-7 Power Supply Connector J3 to Control Board Connector J301 Pin Signal Pin Signal 1 ENBL5V 8 PPWRON 2 GROUND 9 GROUND 3 GROUND 10 Reserved 4 GROUND 11 GROUND 5 ACON 12 VBAT 6 VBATMEAS 13 VBAT 7 GROUND 14 PLOADON Signal Definition ACON AC on LED. Drives the AC indicator LED on the keyboard. ENBL5V Signal from System Gate Array to power supply. When high, power supply turns on SW_+5V.
CPU Assembly Connectors Table A-8 Table A-9 Power Supply Connector J2 to Control Board J302 Pin Signal Pin Signal 1 GROUND 9 +5V 2 GROUND 10 +5V 3 GROUND 11 V_PRINT 4 GROUND 12 V_PRINT 5 GROUND 13 V_PRINT 6 SW_+5V 14 V_PRINT 7 SW_+5V 15 V_PRINT 8 SW_+5V Signal Definition V_PRINT Power to the printhead. Enabled with +5READY signal. +5V Unswitched 5 volts. SW_+5V Switched 5 volts.
CPU Assembly Connectors Table A-10 NOTE Control Board Connector J101 to Patient Cable Pin Signal Pin Signal 1 V2 10 LA 2 V3 11 LL 3 V4 12 V1 4 V5 13 N.C. 5 V6 14 RL 6 SHIELD 15 N.C. 7 N.C. 16 SHELL 8 N.C. 17 SHELL 9 RA Signal Definition LA Left arm signal from the patient cable. LL Left leg signal from the patient cable. RA Right arm signal from the patient cable. RL Right leg signal from the patient cable. SHELL Connector shell.
CPU Assembly Connectors Table A-11 System Expansion Connector J12 Pin Row A Row B Row C Pin Row A Row B Row C 1 GROUND GROUND GROUND 17 A25 A27 GROUND 2 V_PRINT VBAT VBAT 18 A22 A24 A23 3 HLDA Reserved PPWRON 19 A19 A21 A20 4 PLOADON ACON Reserved 20 A16 A18 A17 5 ENBL5V nNEW5V AD8 21 A1 A3 A2 6 AD7 AD6 AD5 22 FSW_+5V FSW_+5V FSW_+5V 7 AD9 AD10 AD11 23 LAD13 LAD15 LAD14 8 AD4 AD3 AD2 24 LAD10 LAD12 LAD11 9 AD12 AD13 AD14 25 LAD7
CPU Assembly Connectors Signal Definition FEDATA Serial data from front end. FEPWR Front end transformer drive control. FSW_+5V Filtered switched 5 V. GPIO0-GPIO3 General purpose I/O bits GROUND ground. HLDA Hold acknowledge from CPU. INT1 Interrupt to CPU. LAD4-LAD15 Latched CPU address bus. nAS CPU address strobe. nBE0, BE1 CPU byte enable — low/high. nBLAST Indicates last byte of CPU burst transfer. nDEN CPU data enable. nFECLK Serial clock from front end.
CPU Assembly Connectors Table A-12 Power Supply J1 to AC Input Cable Pin Signal 1 L1 2 EARTH_GND 3 L2 A-14
Index A A1, A-14 A16, A-12 AC fuse holders, 5-20 ACON, 4-19 ACON signal, A-10, A-12 ACONLED signal, A-3, A-6 AD1, A-12 ALE signal, A-12 B battery, 2-22 problems, 4-5 removing, 5-2 storing, 2-22 bottom case assembly, 6-13 C calibration pulse amplitude, 2-14 duration, 2-14 cardiograph cleaning, 2-18 description, 1-1 model differences, 1-2 operational overview, 3-1 options and accessories, 1-8, 1-12 specifications, 1-3 cardiograph specifications, 1-3, 1-7 cart, 1-3 description, 1-3 parts list, 6-22 circuit de
Index optical paper sensor removal, 5-14 options power cords, 1-9 options, cardiograph, 1-8, 1-12 country, 1-8 ordering information, parts, 6-1 P PageWriter 100 keyboard tests, 2-13 PageWriter 200/200i keyboard tests, 213 PageWriter 300pi keyboard tests, 2-13 paper sensor, cleaning, 2-21 parts list, 6-1, 6-23 bottom case assembly, 6-13 cart, 6-22 main assembly, 6-7 patient cable, 6-5 parts ordering information, 6-1 patient cable, 3-1, 3-3 and abrasives, 2-21 and autoclaving, 2-21 and isopropyl alcohol, 2-2
Index LED5, A-6 LED6, A-6 signals A1, A-14 A16, A-12 ACON, A-10, A-12 AD1, A-12 ALE, A-12 CLK2A, A-12 CP, A-14 D0, A-12 DATA, A-8 DATA_OUT, A-7 DD0, A-4 DETECTOR, A-8 DF, A-4 DOFF, A-4 DOOR, A-8 DTnR, A-12 EMITTER, A-8 ENBL5V, A-9, A-12 F_+5V, A-12 FEDATA, A-12 FEPWR, A-13 FSW_+5V, A-13 GPIO0, A-13 GROUND, A-13 HLDA, A-13 INT1, A-13 LA, A-11 LAD4, A-13 LL, A-11 LOAD, A-4 nAS, A-13 nBE0, A-13 nBE1, A-13 nBLAST, A-13 nDEN, A-13 nFECLK, A-13 nFECNTL, A-13 nLATCH, A-7 nNEW5V, A-13 nREADY, A-13 nRESET, A-13 nRO
Index Index - 4
