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AT-102 - Frank`s Hospital Workshop

1. m m m m m m m m m ma m m m m m m m 5 N 2 2 A N 5 2 o t lt q O lt L 0 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook 18 1 Main Board Power Supply The mains supply is full wave rectified to produce an unregulated dc supply of approximately 30 V U This voltage is used by a switched voltage generator to produce UD 13 5V UD charges the battery when mains is connected When mains is not connected UD is the battery voltage An ON OFF control logic switches UD to three voltage regulators The unit is switched on directly from the keyboard and then held on from the CPU Detection of overvoltage on either the 5 2 V or 24 V supplies directly switches the unit off Similarly when an undervoltage is detected on US indicating overcurrent the unit is directly switched off The mains LED is lit directly when mains is connected The same circuit also monitors the switched dc supply US and activates signal BATT when the unit is switched on and mains is not connected i e the unit is running on battery power A Battery low signal BLOW is
2. 1 15 Myogram filter Tc 1 16 Mains filter 1 16 Baseline Stabiliser SCHILLER 5 1 16 Smoothing Filter SCHILLER SSP 1 16 Interpreta ON u LLULLU LLL u u u uu uuu 1 17 LEJOS sins ee ss 1 18 Defining Lead Sequence amp Printout 1 18 uu unu uu 1 20 General Settings 1 21 Selecting the ERGO Device 1 21 Blood Pressure Entry 1 21 Selecting the Default Test Protocol 1 22 Defining the Stage Printout Format 1 22 ST uel 28 1 22 Defining Editing Exercise Protocols 1 23 Factory programmed Treadmill Protocols 1 24 DUCE 1 24 Factory programmed Bicycle Protocols 1 24 System
3. Manual automatic of none leads and format Defined lead for ST Measurement J plus 20ms 40ms 60ms System date and time and user ID if set THE ART OF DIAGNOSTICS or 80ms SC L L R AT 102 Service Handbook System Settings Communications Test PRINT COMM SETUP TEST BASE QFTWARE INIT When this is selected test options are given for the RS 232 communication port Use this test if the RS 232 port is suspected of malfunction A special test plug is used to carry out the UART test Full details if checking the RS 232 port is given in the AT 102 Service Handbook Upgrade Update Software PRINT SETUP Use the upgrade option to install any available software options e g Exercise An upgrade code can be obtained from SCHILLER Use the Update option to update the current software NOTE Details of these procedures are given in Section 5 of this handbook 1 32 THE ART DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements system Settings Default Settings To reset the unit to the base default settings press the BASE softkey As the unit resets to the default values a message is briefly displayed on the LCD The base settings Defaults are given on the following page Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILL
4. 4 8 Part Numbers 4 8 Opening and Closing the Case 4 9 Top Assembly Remosval 4 9 Top Assembly Replacement 4 11 Main Board MK 18 1 4 12 4 12 Board Removal 2 DTE 4 12 Board Replacement 4 14 Printer Tray and Thermal printer 4 15 Thermal Printer Removal 4 15 Thermal Printer Replacement 4 15 genet E 4 16 Battery Pack Removal 4 16 Checks and Tests After Battery Replacement 4 16 6562210 me ee ene 4 17 ECO SEOCI DORN u MCI PNIS 4 18 LCD board Removal NE 4 18 2 540 028 SCHILLER 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 ECG Recorder Service Handbook Section 5 Adjustments System Upgrades
5. 06 16 17 02 02 AUTOMATIC FORMAT 1 ECG Printout Short at 25mm s Average Cycles 2 6 50mm s 2 Rhythm Rhythm lead 1 Rhythm lead 2 Measurements Markings Interpretation Use the select softkey to select the different settings E Use the Up Down softkeys to highlight the various options Auto Format 1 and 2 Two separate Auto formats can be defined for the AT 102 Use the NEXT softkey to confirm setting and to move onto the next screen Format 2 ECG Printout Press the SELECT softkey to choose from the following options No Printout No printout of the ECG given at the end of an auto mode recording the recording can be stored in the memory and printed at a later time if required 4 3 1Rhythm Leads are printed in a 4 format at 25mm s with the selected rhythm lead at the bottom of the page at 25mm s 1 12 at25mm s Leads are printed in a 1 12 format at 25mm s no rhythm lead printed Ss Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 Service Handbook ECG Settings 8 5s 4 10s Short at 25mm s Long at 25mm s Long at 50mm s Average Cycles No Printout 4 3 25 2 Rhythm 4 3 50mm s 2 Rhythm 2 6 50 5 2 Rhythm Rhythm Leads The first 8 leads printed for 5 seconds and the last 4 leads printed for 10 seconds Leads are printed in short form 1
6. 1 25 1 26 User Identification User ID eee eee sees 1 26 1 26 Language 1 27 olf EP D DEDE 1 27 Paper 1 27 Communication 1 28 Test and Information 1 29 Obtaining a printout of all current settings 1 30 Communications Test 1 32 Upgrade Update Software 1 32 Default SENOS Llu l a u 1 33 Unit Defaults Table c 1 34 Article Number 2 540 028 SCHILLER AG 2002 THE ART DIAGNOSTICS SCHILLER AT 102 ECG Recorder Service Handbook Section 2 Functional Overview 2 1 POC GH OM rr 2 2 18 1 Main Board 2 4 Power Supply 2 4 Program Memory
7. 5 14 Installing New Software Options Upgrade 5 14 Updating the System Software 5 16 Section 6 Spare Parts 6 1 inen 6 2 opare Pans 6 3 viii THE ART DIAGNOSTICS 102 ECG Recorder Service Handbook Contents Section 7 Technical Data 7 1 7 3 7 3 7 4 Technical Data for ECG 7 4 Technical Data for Spirometry Option 7 5 sn E 7 7 Configurations Tc S 7 7 Annex A Glossary A 1 EEE 2 Annex 102 Circuit Diagrams and Engineering Drawings B 1 Index IX Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 ECG Recorder Service Handbook Terms of Warranty The CardioLaptop AT 102 is warranted against defects in material and manufacture for the duration of one year as from date of purchase Exclu
8. 102 Service Handbook Upgrading the Unit Updating the software Updating the System Software AT 102 software is updated using a PC program called SWUP To update the software the RS 232 connector on the side of the AT 102 is connected to a PC using a RS 232 to 5 232 cable assembly Prerequisites E RS 232 cable assembly P N 2 310 159 B SWUP Programme for Windows this can be downloaded from the SCHILLER Mailbox Procedure 1 Using the RS 232 cable assembly P N 2 310 159 connect the AT 102 RS 232 connector on the side of the unit to any free COM port on your PC 2 On AT 102 enter the TEST and INFO screen SETUP SYSTEM SETTINGS TEST AND INFO PRINT COMM BASE SETUP SOFTWARE INIT 9 Select SOFTWARE The following is displayed EXIT 06 16 17 02 02 AT 102 V1 02CM 21 03 2002 SAG unknown Copyright 2002 by SCHILLER AG Switzerland UPGRADE UPDATE J EJ E39 EJ EJ 4 Select UPDATE 5 16 THE ART OF DIAGNOSTICS 102 ECG Service Handbook Upgrading the Unit Updating the software Section 5 Adjustments 8 Install the SWUP program the PC available from the SCHILLER Mailbox Follow the instructions given by the program Open the SWUP program through the SWUP icon on the desktop or the Startup Schiller Menu The following is displayed E Softwa
9. If a faulty pixel is detected the printer must be replaced If the printout is uneven for example darker at the top than at the bottom it indicates that the printer alignment is not correct If the printout is too faint or too dark check the paper old paper paper that has been exposed to light for a long period or poor quality paper can all adversely effect the print quality A too light or too dark printout also indicates that the TPH temperature is incorrect Change the Printer NOTE The shelf of the printer paper is not indefinite Old paper paper that has not been stored in a cool damp free environment or paper that has been exposed to excessive heat can adversely effect the quality of the print Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 3 13 SC L L R AT 102 Service Handbook Thermal Printer Check Print Head Alignment and Print Head Tension The print head tension the pressure that the print head exerts on the printer paper is achieved with two springs exerting pressure on the print head the print head tension cannot be adjusted Similarly print head alignment is fixed and cannot be adjusted If the print head tension or print head alignment is not correct change the printer Thermal Printer Fault Diagnosis Possible Printer Problem Corrective Action Paper jams or does not stop at Clean paper mark detector with a 70 correct position alcohol solution Allow
10. User Identification User ID The user identification is printed on all recordings The user ID can be the department doctor or hospital etc Select User ID and a blinking cursor is present enter up to 30 characters via the keypad Note If the unit is reset to the default settings see following the user identification must be re entered Date and Time 1 26 Enter the date in the format day month year Enter the time using the standard 24 hr notation When set the ENTER key must be pressed to confirm THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements oystem Settings Language Several languages are already programmed into the unit Select the language for the screen display and for the printout The language will also set the units used by the system The difference between American and English is as follows American Standard English measurements in inches measurements in centimetres temperature in Fahrenheit temperature in degrees centigrade Mains filter setting 60 2 mains filter setting 50Hz date order mm dd yy date order dd mm yy Additionally when American is set further race settings are given and Spiro diagnosis is based on ITS recommendations see Spirometry handbook The default language is Standard International English Startup Screen Here you can specify the first screen to be displayed when the unit is switched on Select between pa
11. 4 12 THE ART OF DIAGNOSTICS 102 Service Handbook Section 4 Main SCHILLER AG 2002 Module Removal and Replacement Board MK 18 1 Carefully hinge the top assembly so that the top assemblies are apart as shown Disconnect all connectors on the board including the live and the neutral bayonet connectors to the mains connector Unscrew the securing screws on the top of the board and remove the board 4 13 Article Number 2 540 028 THE ART OF DIAGNOSTICS SCH LL E R AT 102 Service Handbook Main Board MK 18 1 Board Replacement To replace the Main board MK 18 1 proceed as follows 1 Position the board and secure at 12 fixing points 2 Reconnect all connecters P15 under P9 under Ext Printer Video VGA P16 under Comm Module not used P1 under Patient 4 14 THE ART DIAGNOSTICS Section 4 AT 102 Service Handbook Module Removal and Replacement Printer Tray and Thermal printer CAUTION The thermal printer contents is static sensitive observe antistatic precau tions The printer is tensioned with two springs under the retaining bar Take great care when removing the four screws not to lose the springs Thermal Printer Removal 1 Remove the main board 18 1 as described previously 2 Unscrew the four retaining screws securing the printer in position 3 Gently remove the printer taking care to retain the two tensioning sp
12. IS THE LCD NO 2 ECG TRACES DISPLAYED ON THE LCD YES MONITOR DISPLAYS DATA DOES THE PRINT OUT THE ECG RACES AND PATIEN YES ARE STRAIGHT LINE ECG TRACES NO DISPLAYED ON THE LCD DOES THE EXERCISE TEST FUNCTION YES PRINT SCREEN DOE E PRINTER FUNCTIO NO DOES THE SPIROMETRY TEST FUNCTION YES PRINTER MOTOR FUNCTIONED NO DO THE RS INTERFACES FUNCTION IS THE PRINT QUALITY GOOD IS THE PRINTER FUNCTIONING ORRECTLY2 DOES THE PAPER TRAY EJECTION WORK CORRECTLY AT 102 Initial Fault Diagnosis Chart Sheet 2 3 4 THE ART OF DIAGNOSTICS 102 Service Handbook Section 3 Fault Finding ARE ALL THE CABL ASSEMBLIES AND CONNECTORS YES AT 102 Fault Diagnosis Chart Sheet A Power Problems Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 Service Handbook NO ARE ALL THE CABL ASSEMBLIES AND CONNECTORS IS THE AC VOLTAGE READING APPROX 18V NO ARE ALL POWER SUPPLIES OK YES AT 102 Fault Diagnosis Chart Sheet B Power Problems 3 6 THE ART OF DIAGNOSTICS 102 Service Handbook Section 3 Fault Finding ARE ALL THE CABL NO ASSEMBLIES AND CONNECTORS YES NO ARE ALL POWER SUPPLIES OK YES AT 102 Fault Diagnosis Chart Sheet C General P
13. 06 16 17 02 02 INTERPRETATION Sensitivity High Age assumed to gt 30 yrs Abnormal ECG Not Print Unconf Report Print SELECT NEXT Sensitivity High or low sensitivity Age Assumed to be Greater than 30 years or 30 years and under NOTE The Patient age assumed to be setting is only applicable when patient data has not been entered When a patient s date of birth has been entered this setting is ignored Abnormal ECG Normal Abnormal is printed or not printed Unconfirmed Report Unconfirmed Report is printed or not printed Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook ECG Settings Leads 06 16 17 02 02 a LEADS Lead Sequence Standard Signals simultaneous Auto Centering Rhythm lead group Left Posterior VA V9 Right precordials 5 Right precordials V6r Nehb D A J SELECT NEXT e EJ EJ EJ EJ Defining Lead Sequence amp Printout The required settings can be selected as follows Lead Sequence Select between Standard lead sequence or Cabrera lead sequence Signals Select between Simultaneous all ECG leads are printed in the same time segment in automatic mode only or Sequential each group is a contiguous time segment of approximately 2 5 or 5 seconds in automatic mo
14. 3 6 AT 102 Fault Diagnosis Chart Sheet C General Problems 3 7 AT 102 Fault Diagnosis Chart Sheet D Printer Problems 3 8 AT 102 Fault Diagnosis Chart Sheet F Exercise Mode Problems 3 9 AT 102 Fault Diagnosis Chart Sheet Spirometry Problems 3 10 AT 102 Fault Diagnosis Chart Sheet H Communication 3 11 vi THE ART OF DIAGNOSTICS 102 ECG Recorder Service Handbook Contents Functional Check 3 12 Thermal Printer Check 3 13 Print Head Alignment and Print Head Tension 3 14 Thermal Printer Fault Diagnosis eese 3 14 RS 232 Interface and Spiro Check 3 15 Section 4 Module Removal and Replacement 4 1 OOe 4 3 9 use excute u 4 4 PAY SICA suu 4 5 Exploded View Lower Casing 4 6 Exploded View Upper Casing 4 7 Prerequisites Test Equipment Tools and 4 8 General Prerequisites
15. 5 13 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC H 102 Service Handbook Upgrading the Unit Updating the software Installing New Software Options Upgrade Use the upgrade option to install any available software options e g Exercise To install new options in the AT 102 a code must be entered This code must be obtained from SCHILLER To install software option proceed as follows 1 Enter the TEST and INFO screen SETUP gt SYSTEM SETTINGS gt TEST AND INFO PRINT SETUP 2 Select SOFTWARE The following is displayed 06 16 17 02 02 AT 102 V1 02 21 03 2002 SAG unknown Copyright 2002 by SCHILLER AG Switzerland 5 14 THE OF DIAGNOSTICS 102 ECG Service Handbook Section 5 Adjustments Upgrading the Unit Updating the software 3 Select UPGRADE The following is displayed 06 16 17 02 02 AT 102 V1 02CM 21 03 2002 SAG unknown Copyright 2002 by SCHILLER AG Switzerland 4 Enter the upgrade code When the correct code is entered acceptance of the code is indicated by a series of beeps The option can be used immediately CAUTION More than 10 attempts to enter the incorrect code blocks the unit 5 15 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC H
16. Noise Damping The right leg electrode to the patient is the signal ground reference signal To assist in cancelling some patient noise and thus reducing incoming signal distortion the incoming signal from the patient left leg electrode is phase shifted 180 This phase shifted signal is then used by the signal ground reference to cancel or reduce patient induced noise RS 232 Interface This is a standard RS 232 V 24 interface connected to the MK 18 10 main board The communications controller contains a USART and interface circuit which performs the parallel serial and serial parallel conversion for the transmission and reception of data and provide signal level compatibility with RS 232 standard External Modem 2 6 An external modem can be connected to the RS 232 output from the AT 102 and be used for transmitting memory contents over a telephone line THE ART OF DIAGNOSTICS 102 Service Handbook Section 2 Functional Overview Top Assembly LCD Screen The LCD power supply produces the high voltage for the LCD backlight and the contrast voltage LCD data is stored in a video RAM and the LCD controller converts the data to the proper form for the LCD screen Alphanumerical Keyboard The keyboard is a matrix style circuit which is periodically scanned by the processor via the keyboard interface circuit It is an integral part of the top assembly and can not be individually replaced Article Number 2 540 0
17. BLOW CHAD 0 16 CI 0 10 CO 0 10 CL2 CLK CS CTS D 0 15 DACWR DMUX DRAM DRC 0 6 Article Number 2 540 028 SCHILLER AG 2002 1000 Hz Analog input from the experimental inputs DC1 and DC2 Address strobe Signal to CPU indicating battery operation Analog signal to the processor giving the charge condition of the battery Battery voltage analog signal from the power supply used by the processor to assess battery or mains operation Battery less than 11 3 V LCD flashes when this signal is active When the battery drops to below approximately 9 4 V the unit is switched off These values apply to equipment with 12 V battery For other equipment the limits are different ECG signal multiplexer control signals on the ECG amplifier Communication interface General control signals for the communications interface circuits RS interface control lines input RS interface control lines output 19 kHz LCD latch pulse 3 11 MHz LCD clock frequency Clock signal The number following the CLK indicates the frequency For example CLK19 indicates a frequency of 19 MHz Chip select The general format of the chip select signals is CS followed by some characters The characters indicate the device to which the chip select signal appertains For example is the chip select signal for the real time clock and CSEPROM is the select signal for the EPROM etc Clear to send
18. All externally connected hardware must be approved by SCHILLER Connection of any hardware not approved by SCHILLER is at the owner s risk The unit guarantee may also be invalid Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook Introduction Power Supply The mains connection is on the rear of the unit The power supply voltage is set by the factory for 100 115V nom 110V or 220 240V nom 230V working The setting is indicated by the indented metal strip on the fuse panel Contact your dealer if the voltage needs to be changed Switching On and Off The AT 102 is switched on with the green ON key and off with the red OFF key These keys are situated on the top right of the keypad The mains indicator lamp on the keypad is always lit when the unit is connected to the mains supply The unit can either be operated from the mains supply or from the built in rechargeable battery The power source is indicated on the top line of the LCD When mains is connected a mains symbol is displayed When the unit is running on battery power a battery symbol is displayed Power Indicator symbol The internal battery provides power for up to 3 hours The Battery indicator blinks when the battery capacity is limited 06 16 17 01 02 Harrison Stephen HR 78 RET EECinG2 To recharge the battery connect the C4 C C
19. Standard S or Cabrera C Printout of signals Sequential or Simultaneous Enabled or Suppressed Rhythm V9 V4r V6r DAJ ON or OFF for each lead group THE ART OF DIAGNOSTICS 102 ECG Service Handbook oystem Settings Filter Interpretation Comm Spiro Stress Date and Time Article Number 2 540 028 SCHILLER AG 2002 Baseline Filter Mains Filter Myogram Filter SSB Filter SSF Filter Sensitivity A30 Abnormal Baud rate Mode F f v Flow f V Diagn PEFD l min Axis Bike Prot Stage Print ST Lead J Point 0 05 0 15 or 0 30 Hz 50 60 Hz or OFF Section 1 Operating Elements 25 or 35 Hz ON or OFF Smoothing Filter Enabled or Suppressed C Baseline Stabiliser Enabled or Suppressed Low or high sensitivity Patient age is assumed to or gt 30 lt 30 Unconfirmed report is written suppressed Normal Abnormal printed Suppressed Enabled or 115200 57600 38400 28800 14400 or 9600 This is followed by parity setting Y N bits and number of stop bits Line or Modem Enabled Enabled Enabled Enabled 5 10 or 20 mm s lt S S or Suppressed or Suppressed or Suppressed or Suppressed 900 911 or SECA CT100 or 252525 ETM435 TM4000ES or 770CE MTM 1500
20. The prerequisites that must be fulfilled before removing of the module Tools and equipment that are required to remove and replace the module and to carry out the functional checks and adjustments Removal Procedures Replacement Procedures Checks and Tests that must be carried out after replacement Any adjustments jumper settings special checks or functional procedures that are required during a procedure are detailed in the relevant step In text diagrams support the text where required and provide location details of connectors test points and adjustment potentiometers Specific warnings and cautions are given where applicable Warnings indicate potential danger that could cause personal injury Cautions indicate areas that could cause damage to the equipment key operation or menu selection is required the key sequence required is given in bold letters The character or character string given is the actual character that is printed on the key When a key sequence is provided it must be followed in the order given Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 4 3 SC L L 102 Service Handbook safety Notices WARNINGS Before commencing any removal or replacement procedures ensure that the mains power supply is switched off and that the mains cable is removed Certain checks and adjustments can only be carried out with the top assembly removed and with mains c
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22. 5mV and 30mV Reassemble the unit as detailed in Chapter 4 THE ART OF DIAGNOSTICS 5 9 SC L E 102 Service Handbook ECG Amplifier 2V 2V and PWM Ramp Time Adjustment The 2V voltage rails generated on the ECG Amplifier board are used as a reference by the measurement and PWM circuits NOTE The 2V reference voltages and the PWM ramp must both be adjusted at the same time Tools Equipment and Material E Digital voltmeter Small flat bladed screwdriver Procedure WARNING Mains power is potentially lethal disconnect the mains before disas sembling the unit and remove the mains cable 1 Disassemble the unit as detailed in Chapter 4 2 Remove the Main board 18 1 from the assembly and remove the EMC shield from the board Replace the board in position 4 Reconnect the keyboard to the control board and place the top assembly on its side in front of the Base assembly 5 10 THE OF DIAGNOSTICS 102 ECG Service Handbook Section 5 Adjustments ECG Amplifier Reference voltage Switch the unit and measure the voltage difference between the 2V reference and the 2V reference on pins 1 and 7 of operational amplifier U79 Adjust trimmer to achieve a voltage difference of 4000 mV 2mV Reassemble the unit as detailed in Chapter 4 Re check the voltage by again obtaining a service printout see following Article Number 2 540 028 SCHILLER
23. BASE INIT EJ EJ SOFTWARE EXIT You are then prompted to select UART TEST and only if a spiro sensor is connected to the RS 232 interface SPIRO SENSOR When UART TEST is selected the current Baud rate RTS and CTS settings are displayed When SPIRO SENSOR is selected the sensor type is displayed SP 250 or SP 260 and the software version of the spirometry software Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 3 15 SCHILLER 3 16 THE ART OF DIAGNOSTICS AT 102 Service Handbook AT 102 Service Handbook Section 4 Module Removal and Replacement Section 4 Module Removal and Replacement 4 1 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L AT 102 Service Handbook Remove top assembly In Base assembly access to Paper tray Main Board MK Battery pack assembly and 18 1 connectors motor ECG and battery Mains transformer Thermal printer charge voltage potentiometers Remove top assembly In Top assembly access to LCD screen Keyboard assembly 4 2 THE ART OF DIAGNOSTICS 102 Service Handbook Section 4 Module Removal and Replacement Introduction This Chapter provides an overview of the procedures to remove and replace the modules that are spared at service level The instructions given in this chapter are autonomous with each module containing the following
24. General signal used in data communication Data bus Digital analog converter write Data multiplexer Dynamic RAM Dynamic RAM control THE ART OF DIAGNOSTICS Annex A 3 SCHILLER AT 102 Service Handbook DS Data strobe DSP Digital signal processor on program pack DTACK Transfer data acknowledge Bus signal to acknowledge transfer of data DIR Outgoing serial data turns modem ON ECGI in serial data to the CPU sent over the optical interface ECGMUX The multiplexed ECG signal from the ECG amplifier ECGO out serial amplifier control data from the CPU sent over the optical interface EF Empty flag EJCT Eject paper tray EKGRES Reset signal to the ECG amplifier This signal resets the ECG amplifier to recenter the ECG image on the LCD FIFOR First in first out read FLM Control signal for frame synchronisation of the LCD FPIN Input for floating point co processor FWR Flag read write HREN Output enable signal for thermal print head data History enable HSYNC Horizontal synchronisation video VGA output IPLO 2 Interrupt priority level binary encoded IREG Control signal from the current detector and limiter circuit on the power supply to regulate supply ISYS Interrupt system 2 kHz KB Keyboard data in KBBEEP Keyboard beep to audio amplifier KBCLR Keyboard clear KBCL1 Keyboard clock KBCL2 Keyboard clock KBIN Keyboard da
25. operation Bl Storage and transmission facilities for recordings Excercise ECG with interface for control of digital ergometers and treadmills Option B Integral full size thermal quality printer with various user defined print format options External laser or deskjet printer Option B Interpretation including measurements and average cycles with automatic and manual printout of the recording Option B Spirometry Option 1 2 THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements Introduction Operating Philosophy Overview There are broadly four types of data display as follows Data Acquisition and In this screen the real time ECG is displayed From this ECG Recording Screen screen a continuous printout can be initiated and or an auto recording can be made In auto mode 10 seconds of ECG data is analysed and averaged and the results given on a printout The format and data of an auto mode printout is independent of the screen display An auto mode recording can also be stored in the memory for later print or transmission Memory Screen In this screen stored recordings can be accessed Patient Data Screen Patient data entry via the keypad Data Entry and Setup In these screens all system settings resting and exercise ECG settings and spiro settings are made Initiating Functions or Tasks Most functions and tasks are initiated by the 5 softkeys situated immediately
26. to logic 0 Power On Reset The Power on reset circuit controls the master reset of the CPU This circuit has two functions as follows gm To provide a delay on initial switch on to ensure that the power supply is fully stabilized and give the 200ms reset time required by the 68332 processor E To disable the unit if the 5V rail drops below 4 75V Stepper Motor Controller The printer stepper motor controller sets the speed of the printer motor with a clock frequency dictated by the master CPU The purpose of the stepper motor controller circuit is to ensure that the motor speed requested by the microprocessor is achieved and maintained ECG Isolated Power Supplies DC DC converter circuits produce all the isolated power voltages required by the ECG Amplifier circuit The 2 0Vi and the 2Vi isolated reference voltages are generated from the 5Vi supply Note When taking measurements always ensure that the isolated ground is used for reference Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 2 5 SC L L R AT 102 Service Handbook MK 18 1 Main Board cont ECG Signal The incoming ECG signals RA LA and C1 to C6 are low pass filtered and applied to non inverting operational amplifiers giving a gain of 11 The signals are further band pass filtered approximately 0 05 Hz to 470Hz and amplified by 23 before being applied to the multiplexer The multiplexer sampling rate is 1000Hz
27. 1 Operating Elements ECG Settings Filters 06 16 17 02 02 7 FILTERS Baseline Filter Myogram Filter Myogram Filter Off at power up Mains Filter 50Hz Schiller SBS Schiller SSF On SELECT NEXT There are five different filters which can be set individually as follows Baseline filter The cutoff frequency of the filter is set on the top line The cutoff can be 0 05Hz 0 15Hz or 0 3Hz Note The set value is the lower limit of the frequency range and is normally set to 0 05 Hz The settings 0 15 and 0 30 Hz should only be used when absolutely necessary as the possibility exists that they could affect the original ECG signal especially the ST segments Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook ECG Settings Myogram filter The Myogram filter suppresses disturbances caused by strong muscle tremor The filter is applied by pressing the FILTER key or programmed on as default when the unit is switched on When the Myogram filter is on FILTER is displayed in the information box The cutoff frequency is user defined at 25Hz or 35Hz When off at power up is selected the Myogram filter is off when the unit is first switched on Note An ECG recorded in auto mode is stored unfiltered It is therefore possible to print the stored ECG either with or without passi
28. 102 Service Handbook Paper Mark Detector Check This procedure is a check only There are no presets that can be adjusted If this check fails the main board MK 18 1 must be replaced Tools Equipment and Material m Digital voltmeter m Small flat bladed screwdriver i 7096 alcohol solution and clean lint free cloth Procedure To check the paper mark Schmitt trigger sensitivity proceed as follows WARNING Mains power is potentially lethal disconnect the mains before disas sembling the unit and remove the mains cable Paper Mark detector cable Paper Mark opto sensor 5 8 THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 5 Pape Article Number 2 540 028 SCHILLER AG 2002 Adjustments r Mark Detector Check Disassemble the unit as detailed in Chapter 4 Clean the photocell situated on the opposite side to the dc motor with a 70 alcohol solution Allow to completely dry Reconnect the keyboard to the main board and place the top assembly on its side behind the Base assembly Switch the unit on and set the speed of the printer to the slowest setting of 5mm s Smm s key Press the MAN START key to activate the printer The paper is now moving at low speed through the roller and paper mark detector Check the pulse amplitude at P12 pin 3 Measure with AC setting signal is noisy E no paper mark white paper between 80mV and 200mV paper mark black paper between
29. 7 Power Supply 1 6 LCD Display 1 4 1 10 Precordials 1 19 Lead group settings 1 19 Print Head Alignment and Print Head Lead Sequence 1 18 Tension 3 14 Left Posterior 1 19 Printer 4 15 Printer Timing 2 5 Printout of all current settings 1 30 2 4 Proprietary Test Equipment tools 5 5 PWM Ramp Time Adjustment 5 10 Main Components of the AT 102 1 4 Mains filter 1 16 Markings 1 14 Measurements Markings Interpretation 1 14 MK 14 10 Adjustment Locations 5 6 Recycling xi Mode 1 28 Reference 2V 2V Adjustment 5 10 Motor Speed 2 5 Removal and replacement 4 15 Myogram filter 1 16 Rhythm Lead Group 1 19 Rhythm Leads 1 14 Right Precordials 1 19 RS 232 Interface 3 15 RS 232 Test 3 14 Nehb 1 19 Noise Damping 2 6 Index 3 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L 102 Service Handbook S U Safety Notices xii xiii xiv Udif 5 13 Safety Standards 7 4 Unit Defaults 1 34 SCHILLER SSF 1 16 Uoff 5 13 Selecting the ERGO Device 1 21 Upgrade 1 32 5 14 Sequential 1 18 Upgrading the System Options and Updating software Service Printout 5 12 5 13 514 5 15 Signals 1 18 Uref 513 Simultaneous 1 18 Uref 5 13 Smoothing Filter 1 16 User Identification User ID 1 26 software 5 14 5 15 5 16 5 17 Spare Parts 6 3 Spiro Sensor Check 3 15 Spiro sensor type 3 15 Spirometry 7 5 ST Amplitude Lead 1 22 Warranty x Stage Pri
30. AG 2002 THE ART OF DIAGNOSTICS SC L E 102 Service Handbook 9 12 Service Screen The service screen provides information of the patient cable and electrodes and gives the value of certain reference voltages and important internal offset values These values are for information only The service screen also gives variable settings and measurements that can be set by the service engineer to carry out these adjustments some of the settings require additional test equipment To display the service screen B Connect the patient cable 5 Press alternative key Fn and from the resting aquisiton screen press LEAD TEST Filter Off MANUAL PRINT MENU The following screen is displayed ECG AMPLIFIER U el mV Uref 2001 R 2 Uref 1996 L 1 Udif 3997 Cl 2 Uoff 108 Cz 2 Callo 998 C3 1 C5 9 C 1 Zales EPROM 6600 To obtain a printout press P THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 5 Adjustments service Screen cont ECG Reference Voltage This provides measurements and setting facilities for the reference voltage used for accurate measurement of ECG signals Uref This gives the value of the reference voltage used the multiplexer circuit on the ECG Amplifier The value of the reference voltage is 2000 mV 20 mV m Uref This is a negative reference voltage used on the ECG Amplifier board The value
31. AT 102 is available in three versions Version M Standard Unit with ECG recording measurements memory and printout capabilities Version C Interpretation Standard unit with ECG Interpretation program Version Stress C unit with ECG stress test program Note The spirometry option using the SP 250 sensor or SP 260 sensor is available when the sensor is connected to the RS 232 interface Technical data subject to change without notice Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 7 7 SC L L E 102 Service Handbook 7 8 THE ART OF DIAGNOSTICS 102 Service Handbook Annex A AnnexA Glossary Annex Article Number 2 540 028 A 1 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L H AT 102 Service Handbook Introduction The following list provides a glossary of the important signals and acronyms used in the circuit diagrams for the SCHILLER instruments They will not all apply to the AT 102 Only abbreviations that are specific to SCHILLER equipment are included here General electrical and electronic abbreviations are not included Annex A 2 THE ART OF DIAGNOSTICS 102 Service Handbook Acronyms 05 1 Offset signal on ECG amplifier CPU Address Bus Annex A Glossary ALBEEP or BEEP Alarm beeper signal to the audio amplifier The frequency of this signal is about ANA1 AS BATT BATTLC BATTV
32. Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER XIV AT 102 ECG Recorder Service Handbook safety Notices Maintenance Precautions BEFORE CARRYING OUT ANY MAINTENANCE PROCEDURES SWITCH THE UNIT OFF AND DISCONNECT FROM THE MAINS BY REMOVING THE MAINS PLUG The unit is protected by double pole neutral fusing for continued protection against the risk of fire Replace only with the same fuse type and rating Do not use high temperature sterilisation processes such as autoclaving Do not use beam or gamma radiation sterilisation Do not use solvent or abrasive cleaners on either the unit or cable assemblies Do not under any circumstances immerse the unit or cable assemblies in liquid THE ART OF DIAGNOSTICS 102 ECG Recorder Service Handbook Contents Symbols and Conventions Used in this service handbook The following words and symbols mark special messages throughout this guide General Warning Text set off in this manner indicates that failure to follow directions could result in bodily harm or loss of life or failure to follow directions could result in damage to equipment or loss of information WARNING Specific Warning Text set off in this manner indicates that failure to follow directions could result in bodily harm or loss of life CAUTION Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of infor
33. Operating Elements 1 1 lilloi 6 1 2 x 0j M S 1 2 Operating Philosophy Overview 1 3 Initiating Functions or Tasks 1 3 Main Components of the 102 2 2 2 2 1 4 BaCk uuu uuu 1 5 Power Supply 1 6 SWITCHING On OI u LI 1 6 Changing a Mains Fuse 1 7 Potential Equalisation M 1 7 rr E 1 8 LCD Screen u u 1 10 THE ART OF DIAGNOSTICS 102 ECG Recorder Service Handbook Contents ECG Settings 1 12 Auto Format 1 and 2 u 1 13 ECG Printout 0 4 0 00000 1 13 Average Gy0leS l ll 1 14 RAVIN LOG rc S 1 14 Measurements Markings and Interpretation 1 14 FII eee 1 15 Baseline filter
34. Our staff will be pleased to help process your order or to provide any details for all SCHILLER products The address for advice is SCHILLER AG Sales Department Order Processing Altgasse 68 6340 Baar Switzerland Phone Number 41 41 766 42 42 Mail sales schiller ch If you need specific help from our service engineers please contact the service department by mail address given on our web site or phone the number above THE ART OF DIAGNOSTICS AT 102 Service Handbook Section 6 Spared Parts Spare Parts The parts listing for the AT 102 at the time of print was being revised Please contact your local agent for parts listing 6 3 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L 102 Service Handbook 6 4 THE ART OF DIAGNOSTICS 102 Service Handbook Section 7 Technical Data Section 7 Technical Data The technical data is subject to change 7 1 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L E 102 Service Handbook 7 2 THE ART OF DIAGNOSTICS 102 Service Handbook Section 7 Technical Data Technical Data System Dimensions 400 x 330 x 101 mm approx 5 kg Built in monitor 120 x 90 mm effective display area 320 x 240 dots resolution On screen status indicators Battery status Date time Power source Control panel and keyboard User friendly alphanumeric keyboard LED indica
35. and Software Updates 5 1 CHO 5 0 Safety Notices and Conditions 5 4 Conditions 5 4 ESE eben 5 5 Proprietary Test Equipment Tools 5 5 Main Board MK 14 10 Adjustment Locations 5 6 Component Location MK18 1 Component Side 5 6 Battery Charge Voltage 5 7 Precautions and Requirements 5 7 EG ipiri uuu TT T TT 5 7 i 5 7 Paper Mark Detector Check 5 8 Tools Equipment and Material 5 8 moe CG uuu 5 8 ECG Amplifier 2V 2V and PWM Ramp Time Adjustment 5 10 Tools Equipment and Material 5 10 Procedure Q 5 10 5 12 Upgrading the Unit Updating the Software
36. below the LCD The function of the softkeys varies according to 06 16 17 01 02 Harrison Stephen HR 78 62 C3 C4 C5 C6 the screen displayed and is displayed on the LCD immediately above the key itself During data acquisition further mee gt function keys are provided to make an auto mode recording START and to stop a manual printout STOP The top line of the alphanumeric keypad additionally enables 10mm mV 25mm ms l lI Filter Off MANUAL TEST PRINT direct settings of lead group trace speed and sensitivity filter on off and other functions for both the real time display and manual printout 1 3 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCH H AT 102 Service Handbook Introduction Main Components of the AT 102 O 9 307 1 Keypad and dedicated function keys 2 Patient cable connector RS 232 for any of the following connection of an ergo device connection of a spiro sensor connection of a modem or a PC for export of stored recordings o o Softkey control LCD Display THE ART OF DIAGNOSTICS Section 1 AT 102 ECG Service Handbook Operating Elements Introduction Back Panel O 3 LPT connector for the connection of an external printer Master Reset Potential equalisation stud Mains connector with fuse below CAUTION
37. of the recording Electrode connections when a lead flashes it indicates that the electrode resistance is too high The electrode s must be reapplied Sensitivity 5 10 or 20 mm mV Change the sensitivity with the keys 3 auto 4 5 and 6 An in this box indicates that automatic sensitivity is selected auto mode printout only Speed 25 or 50 mm s Change the speed with the keys 8 and 9 Lead indication leads currently displayed on the screen Change the lead group with the lt and gt keys on the keypad Myogram Filter indication Filter ON or Filter OFF The filter is applied with the filter key Note the frequency of the filter cutoff is defined in Section 4 Setup Area for system messages or instructions THE ART OF DIAGNOSTICS Section 1 SC H L L R AT 102 Service Handbook ECG Settings The 102 ECG and system settings are entered by selecting setup from the initial screen 06 16 17 02 02 First name 2 Height Weight BP Ethnic Medications The following pages detail the programmable ECG parameters NOTE In units where the interpretation option is not installed interpretation state ments cannot be displayed THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements ECG Settings ECG SETTINGS STRESS SYSTEM SETTINGS SETTINGS MENU
38. set to logic 0 when battery voltage 05 falls to 11 3 V A circuit compensates for voltage drop when the printer stepper motor is active and the BLOW signal is active only at 10 3 V The battery voltage is also monitored directly by the CPU which switches the unit off when the voltage falls below approximately 9 4 V Program and ECG Memory A FLASH EPROM electrically erasable contains the unit software 512 kByte and the stored ECG data The two memory blocks can be independently erased It is possible to update the software via the RS 232 serial interface The a serial EEPROM stores the unit base settings Thermal Print Head Controller The Thermal Print Head is controlled by a print head controller and a CPU timer circuit The print head controller serialises the data for the print head and the timer circuit controls how long current is applied to the head and thus the intensity of the printout 2 4 THE ART OF DIAGNOSTICS Section 2 AT 102 Service Handbook Functional Overview MK 18 1 Main Board Printer Timing Strobe generation is controlled by the CPU when one complete pixel line of data is ready to be written Pulse length of STRB1 and STRB2 each of which controls half of the pixel array depends from TPH temperature and so form the pulse width of the TPHT signal Paper Mark The pulsed paper mark signal from the printer is fed to a comparator A detected papermark sets PMARK at the output of comparator U44
39. when mains is not connected When mains is connected this supply charges the battery Contrast voltage to LCD Input voltage for all PSUs on the power supply board from the rectified mains or from the battery 5 V Valid memory address Valid peripheral address Vertical synchronisation video VGA output in the serial multiplexed serial data to the CPU sent over the optical interface from the ECG amplifier Pixel information Shift clock for XDn Frame synchronisation LCD off Baseline reset on the ECG amplifier from the processor THE ART OF DIAGNOSTICS Annex 7 SC L L E 102 Service Handbook Annex THE ART OF DIAGNOSTICS AT 102 User Guide Annex B Circuit Diagrams and Engineering Drawings Annex B AT 102 Circuit Diagrams and Engineering Drawings Annex B 1 102 Service Handbook Index Index 1 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 Service Handbook Index Symbols 2V 2V and PWM Ramp Time Adjustment 5 10 A Article Number Associated Documents ii Auto Centering 1 18 Average Cycles 1 14 B Back Panel 1 5 Baseline filter 1 15 Battery Care xi Battery Charge Voltage 5 7 Battery Pack 4 16 Baudrate 1 28 Bicycle Protocols 1 24 Blood Pressure Entry 1 21 Board Removal 4 12 Board Replacement 4 13 Bruce 1 24 C Cabrera 1 18 Calib 5 13 Changing a Mai
40. 2 4 Thermal Print Head Controller 2 4 Printer LIMINO icsse ia a a 2 5 Paper ene ee 2 5 rO r onea E 2 5 Stepper Motor Controller 2 5 Isolated Power Supplies 2 5 EGO SIG a 2 6 Noise Damping 2 6 RS 232 Interface 2 6 External Modem 2 6 TOD ASSEMDIY 2 7 LCD SCOGII MITT 2 7 Alphanumerical Keyboard 2 7 Section 3 Fault Finding 3 1 2 2 General Check Procedures 3 2 Fili dili ETT 3 3 AT 102 Initial Fault Diagnosis Chart Sheet 1 3 3 AT 102 Initial Fault Diagnosis Chart Sheet 2 3 4 AT 102 Fault Diagnosis Chart Sheet A Power Problems 3 5 AT 102 Fault Diagnosis Chart Sheet B Power Problems
41. 28 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 2 7 SC L L R AT 102 Service Handbook 2 6 THE ART DIAGNOSTICS AT 102 Service Handbook Section 3 Fault Finding Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS Section 3 Fault Finding 3 1 SC L L R AT 102 Service Handbook Introduction The AT 102 is designed to be simple to use and simple to service the service philosophy of the AT 102 is module and board replacement no details are given in this book for board repair The purpose of this chapter is to provide fault finding procedures that will quickly and efficiently identify a fault to a specific module Fault finding procedures are designed so that test equipment is kept to a minimum The AT 102 contains the following modules MK 18 1 Main Board including main and LCD power supplies LCD screen assembly Alphanumerical keyboard integral part of the top assembly Printer assembly Paper tray motor An initial fault finding table is provided detailing general fault indications Use the procedures on the following pages to indicate a faulty area or module In most cases the fault finding tables should indicate the most likely faulty area When more than one module is stated the first module given is the one most likely to contain the fault Other modules given should be checked in the order given When a module has been replaced specific test parameters and setting
42. 40 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook Introduction LCD Screen The display will vary according to the current task being carried out In all screens however the top and bottom lines always display the same information the top line displays system information time patient power source etc and the bottom line always gives the softkey options The following is an example of a typical resting ECG screen 3 1 06 16 17 01 02 Harrison Stephen 78 4 C3 C4 CS C 5 tOmm mV 6 DUE 7 a 8 Filter Of 9 10 2 E Items 1 2 and 3 are in the same position for all screens 1 Top line time date patient name and current power source mains battery mm When battery capacity is limited the battery symbol flashes 2 Softkey designation Pressing the key below the text carries out the function indicated The options available will change according to the screen displayed 3 Data acquisition area or data entry area THE ART OF DIAGNOSTICS 102 ECG Service Handbook Operating Elements Introduction Items 4 to 10 are specific for ECG acquisition only 4 10 Article Number 2 540 028 SCHILLER AG 2002 Current Heart Rate averaged over 4 beats and refreshed every 2 seconds The HR is also given on a manual printout Note that with an auto mode printout the HR is averaged over the full 10 seconds
43. 60601 1 with internal battery Ila according to EEC directive 93 42 medical protection class CE according to 93 42 EEC Technical Data for ECG Patient input circuit Monitor display Leads Chart print out speed Sensitivities Automatic lead programs Data record 7 4 Fully floating and isolated defibrillation protected only with original SCHILLER patient cable 3 channel display of the selected leads 25 50 mm s 5 10 20 mm mV Filter status on off Insufficient electrode contact Heart Frequency HF mm mv mm s 12 simultaneous leads Standard Cabrera 5 10 25 50 mm s manual print 5 10 20 mm m either automatically adjusted or manually selected 6 12 channel presentations of 12 simultaneously recorded standard leads on one or more A4 pages Numerous print out formats can be selected Patient data name age height weight BP user ID Listing of all ECG recording conditions date time filter With optional interpretation C program ECG measurements results intervals amplitudes electrical axes average complexes with optional measurement reference markings guidance on interpreting adult and paediatric ECGs THE ART OF DIAGNOSTICS 102 Service Handbook Section 7 Technical Data Technical Data Recording track 6 12 channel presentation optimal positioning on a width of 200 mm automatic baseline adjustment Filter Myogram filter muscle tremor filter 25 Hz or 35 Hz c
44. AT 102 ECG Recorder Service Handbook Contents 102 12 Service Handbook SCHILLERAG Altgasse 68 6341 Baar Switzerland Phone 41 41 766 42 42 Fax 41 41 761 08 80 www schiller ch Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 ECG Recorder Service Handbook AT 102 Service handbook Article Number 2 540 028 Release a November 2002 Associated Documents Physicians Guide to the SCHILLER Interpretation and Measurement Program 102 User Guide The SCHILLER sales and service centre network is worldwide For the address of your local distributor contact your nearest SCHILLER subsidiary In case of difficulty a complete list of all distributors and subsidiaries is provided on our internet site http www schiller ch THE ART OF DIAGNOSTICS 102 ECG Recorder Service Handbook Contents Intended Use The AT 102 is a 12 channel ECG device used for the recording analysis and evaluation of ECG Recordings Recordings made with the AT 102 can be used as a diagnostic aid for heart function and heart conditions The AT 102 is designed for indoor use and can be used for all patients of both sexes all races and all ages Physician s Responsibility The AT 102 ECG Unit is provided for the exclusive use of qualified physicians or personnel under their direct supervision The numerical and graphical results and any interpr
45. Annex A Glossary This chapter explains all the acronyms and signal titles used in this book and in the AT 102 circuit diagrams Annex Circuit Diagrams amp Board layouts The circuit diagrams and component layouts are provided for all boards These details are provided for information only XVII Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 ECG Recorder Service Handbook XVIII THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Article Number 2 540 028 SCHILLER AG 2002 Operating Elements Section 1 Operating Elements This section contains an introduction to the AT 102 and an overview of all external connections It also gives an overview of the operating philosophy of the AT 102 and an introduction to the basic functions of the unit An overview of the system settings are given in this section for full operating details and system setup see the AT 102 User Guide THE ART OF DIAGNOSTICS 1 1 SC L L R AT 102 Service Handbook Introduction The SCHILLER AT 102 is a 12 channel ECG unit designed to record display and analyse resting ECGs exercise ECGs can also be recorded The unit has been extensively researched to give an ergonomic clear interface that 5 easy to use without compromising functionality The AT 102 has the following features Features E Alphanumeric keypad and dedicated soft key interface for easy user friendly
46. D screen Connect an ECG simulator to the ECG connector on the side panel and switch ON Three ECG traces heart rate sensitivity time scale and status of lead connections are shown on the screen Press the MAN Start key Six leads are printed and are of good quality Press AUTO START and wait approximately 10 seconds for the printout to commence A preprogrammed printout is produced Switch the unit OFF and leave connected to the mains supply for 10 hours or more to charge the battery Disconnect the mains and Battery symbol is shown on the LCD switch the unit ON screen AT 102 Service Handbook Corrective action if result not OK Check mains fuse on the back panel and replace if necessary problem remains replace main board MK 18 1 Ignore or connect ECG simulator Check power board ECG and main board Open the unit and check that the two wire connection from the power supply to the LCD assembly is properly connected high voltage backlight If problem remains replace LCD assembly Check that the signal cable from the main board to the LCD assembly is properly connected If problem remains check LCD assembly power ECG and main board If a lead alarm is flashing check that the lead is properly connected If not reset to default settings and try again Open the case and inspect all cable assemblies and connectors Check printer alignment Run printer test see next page Ch
47. ER oystem Settings Unit Defaults Table Settings Standard Auto Format 1 ECG 25mm s short 0 Rhythm Leads V1 Auto Format 2 ECG 25mm s Long 000 Rhythm Leads V1 Leads Sequence Standard S Rhythm On V9 On V4r Off Vbr Off DAJ Off Autom Centering Enabled Signals Sequential Filter Baseline 0 05Hz Mains Filter 50Hz 60 2 Myogram 35Hz OFF Memory and Communication Baud rate 57600 bps Trans mode line Interpretation Settings 1 34 THE ART OF DIAGNOSTICS AT 102 Service Handbook With Interpretation As set 25mm s short 0 Rhythm Leads V1 2 6 50mmy s 1 Measurements Suppressed Interpretation Enabled Marks Enabled ECG 25mm s long 000 Rhythm Leads V1 Il MECG none Measurements Suppressed Interpretation Suppressed Marks Enabled Sequence Standard S Rhythm On V9 On V4r Off V5r Off Off Autom Centering Enabled Signals Sequential Baseline 0 05Hz Mains Filter 50Hz 60H Myogram 35Hz OFF Baud rate 57600 bps Trans mode line Suppressed U Enabled A30 Age assummed to be lt 30 102 ECG Service Handbook Section 1 Operating Elements System Settings Settings Standard With Interpretation FVC f t on 1 F f v on Diagn on PEF I min on Axis 10 mm s FVC f t on F f v on Diagn on PEF I min on
48. ER AG 2002 THE ART OF DIAGNOSTICS 1 23 SCHILLER otress Settings Factory programmed Treadmill Protocols AT 102 Service Handbook One factory programmed Treadmill protocols is availbale as follows Bruce Stage O O N F 2 Duration 3 min 3 min 3 min 3 min 3 min 3 min 3 min Speed 2 1 7mph 4 0km h 2 5mph 5 4km h 3 4mph 6 7km h 4 2mph 8 0km h 5 8 8km h 5 5mph 9 6km h 6 0mph Omph Factory programmed Bicycle Protocols 1 24 Elevation 10 12 14 16 18 20 22 One factory programmed Bicycle protocols is available 252525 This gives base load warmup of 25W 50W with a step load for both protocols of 25W and a recovery load of 25W THE ART DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements system Settings The AT 102 system settings are entered by selecting setup and system settings from the initial screen s The following pages detail system settings for the AT 102 Article Number 2 540 028 SCHILLER AG 2002 THE ART DIAGNOSTICS SCHILLER oystem Settings Unit S AND INFO AT 102 Service Handbook 06 16 17 02 02 er User ID User Date 17 02 02 dd mm yy Time 06 16 Ethnic W B Language English Startup Patient Data Paper Mode A4 SELECT NEXT
49. GNOSTICS AT 102 Service Handbook Section 4 Module Removal and Replacement Keyboard The keyboard comes as a complete assembly with the top casing The part number of the keyboard is given in Chapter 6 4 17 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCH L L H AT 102 Service Handbook screen board WARNING The Warnings and Cautions at the beginning of the chapter must be observed Ensure that the mains cable is removed before commencing CAUTION The main board contains static sensitive components observe antistatic precautions LCD board Removal Disassemble the and bottom sections as described previously 2 Disconnect the data connector and the LCD backlight power connector for the Main board 9 Unscrew the four retaining screws securing the LCD board in position and remove the board THE ART OF DIAGNOSTICS 102 Service Handbook Section 5 Adjustments System Upgrades and Software Updates Section 5 Adjustments 5 1 SC L L R AT 102 Service Handbook 5 2 THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 5 Adjustments Introduction This Chapter provides the procedures necessary to check and adjust all service settings Every procedure is self contained and details the tools required to carry out adjustments and the test equipment necessary Any adjustments jumper settings special checks or func
50. L 1 000 050 0 If in doubt about any of these settings please contact your phone company and or modem supplier 1 28 THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements system Settings Test and Information A code of the options installed is given after the software version These are as follows B C Interpretation BE S Stress Memory Standard Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER oystem Settings AT 102 Service Handbook Obtaining a printout of all current settings To obtain a printout press the PRINT SETUP softkey COMM EST SOFTWARE BASE INIT A printout of the defined settings will be produced and gives the following information depending on the installed software Unit designation ECG Format 1 and 2 Leads 1 30 Software version Software options installed C Interpretation M Memory standard Stress and Serial number of the unit Speed Auto printout MECG Rhythm leads Measurements Marks Interpretation Sequence Signals Auto Centering Lead Group Default speed setting Long ooo Short 0 or Suppressed Average cycles as defined in auto ECG recording setup e g 4 3 25 mm s 2 Leads selected for R1 R2 resp Print Enabled or Suppressed Print Enabled or Suppressed Print Enabled or Suppressed
51. Spiro Axis 10 mm s Stress Bike 900 911 Bike 900 911 Prot 252525 Prot 252525 TM ETM435 TM4000ES TM ETM435 TM4000ES Prot Bruce Prot Bruce BP off BP off Stage Print 473 1 Rhythm Stage Print 4 3 1 Rhythm ST Lead V5 ST Lead V5 J Point J 6 J Point J 0 1 35 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook 1 36 THE ART DIAGNOSTICS 102 Service Handbook Section 2 Functional Overview Section 2 Functional Overview 2 1 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook Introduction This chapter provides a functional overview of the AT 102 electronics The aim of this overview is to enable the service engineer to identify processing paths in order to help identify possible faulty modules A functional block diagram supports the text Most of the electronics are mounted on a single main board which is housed in the base of the two part AT 102 casing The main functional areas of the AT 102 are as follows On the Main Board 68332 Opto isolated and shielded ECG multiplexer with isolated power supply and patient interface Power Supply m Flash EPROM electrically erasable 16 Megabytes In the top assembly E Keyboard m TFT screen In the base assembly Thermal Printer Paper tray drive motor Battery
52. an be switched on off ECG amplifier Simultaneous recording of all 9 active electrode signals 12 leads Sampling frequency 1000 Hz Pacemaker detection gt 2 gt 0 1 ms Technical Data for Spirometry Option Measured values FVC FEV FEV FEV FEV FVC FEV JFVC 0 5 1 0 3 0 FEV FEF FEF FEF PEF FEF FEF 0 2 1 2 25 75 75 85 25 50 FIVC FIV o FIV FIV PIF 75 SVC SVC ERV IRV TV 1 0 50 MVV MVV RR TV Presentation possibilities print out and screen Flow volume graph Volume time graph Table of measured values Realtime flow curve Data record Patient data name age height weight user ID Registration conditions date time date of last calibration Flow volume graph and or volume time graph Table of measured values with PREDICTED ACTUAL DIFFERENTIAL values Diagnosis guidance Prediction equations Adults ECCS Austria Crapo Morris Knudson Knudson76 Polgar Berglund Finland India Composite Children Quanjer amp Tammeling Austria India Knudson Knudson76 Polgar Extrapolated predicted values Comparison of PRE POST medication is possible Standards Compliance ATS OSHA NIOSH Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 7 5 SC L E H AT 102 Service Handbook Technical Data SPIROVIT SP 250 Pneumotach Flow sen
53. apparatus to the mains supply by means of the supplied power cable A totally discharged m battery requires less than 15 hours to be fully recharged 60 less than hours 90 in less than 7 hours The unit can remain MANUAL connected to the mains supply without damage to either the battery or the unit NOTE When working from battery power the unit is automatically switched off after 5 minutes 30 seconds if battery capacity is limited if no key is pressed THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements Introduction Changing a Mains Fuse CAUTION If it is necessary to change a fuse always replace with the correct rating i e 2X200mAT for 230V 2x315mAT for 110V To change a fuse press the retaining lug in the middle of the fuse panel situated below the mains connector on the back panel Remove the fuse panel and replace the fuse s Click the fuse panel back in position Potential Equalisation V The potential equalisation stud at the rear of the unit can be used to equalise the ground potential of the AT 102 to that of all mains powered equipment in the vicinity Use the hospital or building common ground CAUTION To avoid possible interference from the Ergometer when carrying out an exercise test it is recommended that both the AT 102 and the Ergometer are connected to the same common ground To
54. d MK 14 10 Adjustment Locations Component Location MK18 1 Component Side P9 P15 Video VGA Ext Printer P16 Comm Module P14 RS 232 P1 Patient THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 5 Adjustments Battery Charge Voltage Precautions and Requirements The unit must be placed on an antistatic mat and antistatic precautions observed when any maintenance 1 carried out on the AT 102 The room temperature should be between 18 and 28 degrees Tools and Equipment Digital voltmeter Small flat bladed screwdriver Resistor 2 7 250mW Procedure The battery charge voltage is nominally 13 5V Adjust and check as follows 1 Disassemble the unit as detailed in chapter 4 2 Remove the Main board MK 18 1 from the assembly and remove the EMC shield from the board Replace the board in position 4 Remove the two battery connectors if not already removed and connect a 2 7 kOhm 250mW resistor across the two battery connectors on the main board to simulate a discharged battery Connect the digital multimeter across the resistor 5 Connect the Mains supply WARNING Exercise care be aware that potentially lethal voltages are present 6 Adjust to obtain a charging voltage of 13 5V 7 Disconnect mains supply and reassemble the unit as detailed in Chapter 4 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCH L L E H AT
55. d to carry out all removal and replacement procedures functional tests calibration procedures and adjustments that can be carried out on the AT 102 The test equipment given here is general specific recommendation for test equipment 1 required please contact the SCHILLER service department Digital Voltmeter Selection of cross bladed posi drive and flat bladed screwdrivers Cleaning agent such as Trichlorethylene Selection of spanners Flat ended pliers Double sided tape ECG Patient Simulator e g phantom 320 SCHILLER Patient Cable Low abrasion antistatic mat General Prerequisites The unit must be placed on an antistatic mat and antistatic precautions observed when any maintenance 1 carried out on the AT 102 The room temperature should be between 18 and 28 degrees The safety notices at the beginning of this section must be read and understood before carrying out any of the removal and replacement procedures detailed here Part Numbers The part numbers for all replaceable items are given in Chapter 6 4 8 THE ART OF DIAGNOSTICS 102 Service Handbook Section 4 Module Removal and Replacement Opening and Closing the Case Top Assembly Removal The Top Assembly is secured to the base assembly with seven recessed screws Access to the screws 15 gained from the underside of the unit To remove the Top Assembly proceed as follows WARNING Ensure that the mains cable is removed 1 Turn the uni
56. de only Auto Centering Select between On all ECG traces are centred dynamically for optimal use of paper width or Off ECG traces are set to a fixed baseline position and may possibly overlap THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements ECG Settings The lead group settings allow extra leads to be displayed on the screen when set to The following lead groups can be displayed Rhythm Lead Group avF III V2 V4 V5 Left Posterior V4 V9 V4 V5 6 V7 V8 V9 Right Precordials V5r V1 V2 V3r V4r Vor Right Precordials V6r V1 V2 V3r V4r Vor Nehb D A J J only three leads The above leads can also be printed when displayed only in manual mode The lead groups are changed both on the screen and on the manual printout with the lead next previous keys Article Number 2 540 028 Vs a SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCH LL 102 Service Handbook otress Settings AT 102 Stress ECG settings are entered by selecting and Stress Settings from the initial screen The following pages detail the stress settings for the AT 102 THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements otress Settings General Settings L 06 16 17 05 02 STRESS GENERAL SETTINGS De
57. ded from this guarantee is damage caused by an accident or as a result of improper handling The warranty entitles free replacement of the defective part Any liability for subsequent damage is excluded The warranty is void if unauthorized or unqualified persons attempt to make repairs In case of a defect send the apparatus to your dealer or directly to the manufacturer The manufacturer can only be held responsible for the safety reliability and performance of the apparatus if En assembly operations extensions readjustments modifications or repairs are carried out by persons authorized by him and the SCHILLER AT 102 and approved attached equipment is used in accordance with the manufacturers instructions THERE ARE NO EXPRESS OR IMPLIED WARRANTIES WHICH EXTEND BEYOND THE WARRANTIES HEREINABOVE SET FORTH SCHILLER MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FORA PARTICULAR PURPOSE WITH RESPECT TO THE PRODUCT OR PARTS THEREOF This equipment has been tested and found to comply with the limits for a class A digital device pursuant to both Part 15 of the FCC Federal Communications Commission Rules and the radio interference regulations of the Canadian Department of Communications These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in acc
58. e trailing edge of a pacemaker pulse Pacemaker positive indicates the leading edge of a pacemaker pulse QRS trigger output signal Right arm Row address strobe Error reset signal to inactivate the LCD Ready to send outgoing serial data handshake with CTS Receive data incoming serial data Read Write Reset Resets darkens the LCD THE ART OF DIAGNOSTICS Annex A 5 SCHILLER AT 102 Service Handbook SC 0 8 System control bus CPU control signals SCINV Screen inversion SO Serial output from the CPU to the ECG amplifier via opto isolators SP Spirometry control and data signals SRAM Static RAM memory STRB1 2 Timing signals for printer control SYSEN System enable active when the Program Pack is inserted The CPU will not work if this signal is not active TGATE Gate pulse for programmable timer This signal sets the TPDUR signal TM Thermal printer temperature dc voltage from the print head pulse width modulation of signal TPTH TPC Thermal printer clock This is not a continuous clock signal but is active when loading a line of printer data into shift registers TPCLK Thermal printer clock TPD Thermal printer data serial data for the printer TPDUR Thermal printer duration duration of the strobe pulse dependant on the ambient temperature of the print head and the resistance of the print head TPCSEL Thermal printer controller select control of thermal pri
59. eck replace printer motor Replace main board MK 18 1 Replace paper tray and complete printer assembly If not as programmed check all settings If problem remains replace main board MK 18 1 Run the unit on battery power Unit fully operational No If not check battery and replace if for approximately an hour degradation necessary Run the unit more than 4hours on battery power Battery symbol does not start flashing before 4 hours If the unit does run for 4 hours on battery power it indicates a weak battery Replace as necessary 3 12 THE ART OF DIAGNOSTICS 102 Service Handbook Section 3 Fault Finding Thermal Printer Check To check the printer and to ensure that every pixel is operational a built in printer test is provided Carry out the printer check from the ECG acquisition screen by pressing the FN key followed by the MANUAL PRINT softkey Filter Off A wavy line test printout is given Other test patterns are available toggle the test patterns with the lead arrow keys Carefully examine the printout and ensure that all the lines are even and uninterrupted Any faulty print head pixels will be seen as a horizontal white line Examine the printout for evenness of print Es Faulty pixel shown as JANN horizontal line on the test INIA eee printout exaggerated on this example for clarity
60. etation derived from a recording must be examined with respect to the patient s overall clinical condition Patient preparation and the general recorded data quality which could affect the report data accuracy must also be taken into account It is the responsibility of the physician to make the diagnosis or to obtain expert opinion on the results and to institute correct treatment if indicated FEDERAL LAW IN THE USA RESTRICTS THIS DEVICE TO SALE BY OR ON THE ORDER OF A PHYSICIAN II Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 ECG Recorder Service Handbook 102 Service Handbook Contents MITE g e z a USO lil Physician s Responsibility lil Terms or Warranty x Disposal Instructions and Battery Care xi INOUG CS Xii Operational Precautions xii Precautions for Operation with other Devices xiii Maintenance Precautions xiv oymbols and Conventions Used in this Service handbook XV DOOK Section 1
61. lt to module level The diagnostics are presented in a logical sequence of fault finding algorithms and procedures Illustrations are provided to support the text where needed Chapter 4 Module Removal and Replacement This chapter gives an overview of the physical construction of the AT 102 with the main physical attributes of the unit briefly described The physical description is supported by illustrations showing the internal location of all modules Removal and replacement instructions for all removable modules are also provided in this chapter Each procedure is autonomous with details of tools jumper settings adjustments and settings or special requirements that are required before and after replacement Functional checks that must be carried out after replacing a module are also provided XVI THE ART OF DIAGNOSTICS 102 ECG Recorder Service Handbook Contents Chapter 5 Adjustments This chapter provides all adjustments and settings Also detailed in this chapter are basic functional test procedures that can be performed to check the functioning of the unit Chapter 6 Spare Parts This chapter provides the part numbers and reordering information for all replaceable modules Also included in this chapter are details of any special test equipment or special tools required for adjustment or fault finding procedures Chapter 7 Technical Data The full technical specification of the AT 102 is given in this chapter
62. mation NOTE Text set off in this manner presents clarifying information specific instructions commentary sidelights or interesting points of information XV Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER AT 102 ECG Recorder Service Handbook What s in this book The service philosophy for the AT 102 is fault finding to module level The purpose of this book is to provide all the information necessary to enable the service engineer to efficiently locate and replace a faulty module This book assumes no detailed knowledge of the AT 102 but does require that the service engineer is familiar with standard workshop practices and to have attended an AT 102 service course The book 1 divided into the following chapters Chapter 1 Operating Elements The purpose of this chapter is to provide an easy reference for all the main operator functions and to give a basic introduction to the AT 102 This chapter gives details of the operator controls with the operation and function of each key briefly explained The information in this chapter provides a background to the operating functions only Complete operating information is provided in the SCHILLER AT 102 User Guide Chapter 2 Functional Overview This chapter provides a functional overview of the AT 102 The description is supported by functional block diagrams Chapter 3 Fault Diagnosis This chapter provides a guide to locate a fau
63. ng the myogram filter Filter ON is indicated on the LCD Mains filter The mains filter is an adaptive digital interference filter designed to suppress ac interference without attenuating or distorting the ECG Set the mains filter in accordance with the frequency of your local mains supply Baseline Stabiliser SCHILLER SBS The baseline stabiliser greatly reduces the baseline fluctuations without affecting the ECG signal The purpose of the stabiliser is to keep the ECG signals on the baseline of the printout This filter is only effective in auto mode printout The Baseline Stabiliser is applied to a recording on or not applied to a recording off Smoothing Filter SCHILLER SSF The smoothing filter SSF SCHILLER smoothing filter is a low pass filter to suppress high frequency artefacts between the QRS complexes When this filter is switched on SSF 15 shown on the bottom line of the automatic printout THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 1 Operating Elements ECG Settings Interpretation The interpretation settings enable the user to determine whether or not certain comments will be added to the interpretation statements on the ECG printout Furthermore the patient s age can be assumed lt 30 or gt 30 Low or high can also be set for interpretation sensitivity Low sensitivity will suppress certain non specific ECG diagnoses this may be advisable when carrying out ECGs for screening
64. ns Fuse 1 7 Check Procedures 3 2 Communications Test 1 32 Component Location ECG Amplifier 5 11 Configurations 7 7 Contents iv Customer Services Sales Department 6 2 D Date and Time 1 26 Default Settings 1 33 Default Test Protocol 1 22 Defining Editing Exercise Protocols 1 23 Disposal Instructions xi E ECG Amplifier Adjustments 5 10 ECG Amplifier Reference Voltage 5 11 ECG Isolated Power Supplies 2 5 ECG Printout 1 13 ECG Recording Screens 1 3 ECG Signal 2 6 Electrode DC Offset 5 13 ERGO Device 1 21 Exploded View Base 4 6 Exploded View Paper Feed 4 7 External Connections Back Panel 1 5 External Modem 2 6 Factory programmed Protocols 1 24 Features 1 2 Function icons 1 3 G General Settings 1 21 Getting Started 1 1 Index 2 THE ART OF DIAGNOSTICS 102 Service Handbook Index Initiating Functions or Tasks 1 3 Obtaining a printout of all current settings Installing New Software Options 5 14 1 30 Installing New Software Options Upgrade Opening the Case 4 8 4 10 5 14 Operating Philosophy 1 3 Intended Use iii Ordering Information 6 2 Interpretation 1 14 Interpretation Settings 1 17 K Paper Mark 2 5 Paper Mark Detector Adjustment 5 8 5 9 Keyboard 2 7 4 17 Patient Cable Resistance 5 13 Keypad 1 8 Phone No 1 28 Physical Overview 4 5 Physicians 5 Responsibility iii L Posterior 1 19 Potential Equalisation 1 7 Power Indicator symbol 1 6 Language 1 27 Power On Reset 2 5 LCD 2
65. nter FIFO input memory buffer TPL Thermal printer latch print strobe control and data latch signal TPRES Thermal printer reset FIFO reset for thermal printer controller TPS 0 amp 1 Thermal printer strobe TPTH Thermal printer temperature dc voltage from the print head to ADC approximately 3 7 V at room temperature TS Temperature sense from battery TXD Outgoing serial data uPOFF Off control signal Logic 1 keeps the unit switched on logic O switches the unit off Note that the unit is initially switched on directly from the ON key on the keyboard U1 2 3 4 Upper LCD data UB Battery voltage UCAS Upper column address strobe for dynamic RAM UD1 UD2 Upper data strobe used for generating UOE and UWE UDS Upper data strobe used on the Schiller gate array UOE USRAM Upper output enable for static RAM Voltage rectified from the mains input and regulated to approximately 15 V Annex A 6 THE ART OF DIAGNOSTICS 102 Service Handbook UWE U UBU UD ULCD US VCC VMA VPA VSYNC WP0 and WP1 XDO XD3 XSCL YD YDIS ZEROSET Article Number 2 540 028 SCHILLER AG 2002 Annex A Glossary Upper write enable Unregulated dc supply from mains approximately 30V Back up voltage for the real time clock and static RAM Unswitched regulated dc voltage used as power source for the switched supply US The voltage is 13 5 V when mains is connected or battery voltage
66. ntout Format 1 22 Standard 7 7 Stepper Motor Controller 2 5 Stress Settings 1 20 Switching On and Off 1 6 System 7 3 System Option 5 14 5 15 5 16 5 17 System Settings 1 25 T Terms of Warranty x Test Equipment 5 5 Thermal Print Head Controller 2 4 Tools 4 8 Top Assembly Removal 4 9 Top Assembly Replacement 4 11 Treadmill Protocols 1 24 Index 4 THE ART OF DIAGNOSTICS 102 Service Handbook Index Index 5 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS
67. of this should be 2000 mV 20 mV E Udif This 1 the sum the two reference values above Uref and Uref This value must be 4000 mV 20 mV Uoff This is value of offset voltage on the multiplexer circuit This value should be in the range 150mV Calib This value is Udif value divided by 4 The nominal value is 1000 5 mV Electrode dc offset This gives the voltage drop in the patient cable and can indicate any faults in the patient cable or patient electrode The value given is the dc voltage between the left leg electrode and all other electrodes The measurements obtained will indicate any cable short circuits or open circuits The measured voltage value will depend on where the electrodes are connected The voltage readings that can be expected are as follows With patient connected 100mV m With patient simulator connected 20 mV this will depend on the patient simulator used and must be taken as a flexible measurement With all electrodes shorted together 20 mV m No patient cable connected 350 to 500mV TPH TEMP This is the measured thermal print head temperature that the processor uses to correct print quality When the printer has not been used for some time this should read ambient tempertaure 5 but will rise quickly when the printer is used EPROM This is the checksum for the EPROM Its value varies from one unit to another and may change after a software upgrade
68. on and that no visible damage can be seen Ensure that no cable assemblies are strained crushed or caught Ensure that all connectors are firmly home Position the Top Assembly in front of the Base Assembly and without straining the ribbon cable plug in the interconnecting cable from the keyboard to the main board Connect the ribbon and the dual wire cable assemblies from the LCD board to the power supply part of the main board Note It may be necessary to tilt the Top Assembly for the cable assemblies to reach Carefully position the Top Assembly on the Base Assembly Grasping the two assemblies to ensure that they cannot part carefully turn the unit up side down and replace the seven securing screws and washers in the extreme corners and edges of the unit Return the unit to the upright position Carry out the functional check procedure detailed in Chapter 3 THE ART OF DIAGNOSTICS 4 11 SCH L L H AT 102 Service Handbook Main Board MK 168 1 Parts Main board MK 18 1 Part number as detailed in Chapter 6 Board Removal WARNING The Warnings and Cautions at the beginning of the chapter must be Observed Ensure that the mains cable is removed before commencing CAUTION The main board contains static sensitive components observe antistatic precautions 1 Open the AT 102 casing as described previously support the top assembly 2 From the rear of the unit unscrew the support securing screws
69. onnected When carrying out these procedures beware that potentially lethal voltages are present CAUTIONS The AT 102 contains static sensitive CMOS components observe antistatic precau tions When carrying out any maintenance procedures always place the unit on an earthed antistatic mat Personnel must be earthed when handling any boards or components Always use an antistatic bag when transporting boards or components The unit is susceptible to abrasion damage To prevent scratching always place the unit on a soft non abrasive cloth when carrying out maintenance procedures Take care not to place any strain on the connecting ribbon cable when removing the top assembly Ensure that the cable assembly is not crimped or twisted and that the top assembly is not placed on the cable assembly Care must be taken when removing and replacing connectors Never use force Never strain the cable assemblies The procedural steps given for each module must be followed in the order given 4 4 THE ART OF DIAGNOSTICS 102 Service Handbook Section 4 Module Removal and Replacement Physical Overview The AT 102 unit is enclosed in a two part medical standard moulded plastic case The top part contains the keyboard and the LCD screen with the base section containing all the electronics of the unit the RS 232 interface the thermal printer the paper tray the battery and mains transformer The electronics of the unit are c
70. ontained on a single double sided printed circuit board the main board MK 18 1 This board is secured on spacers moulded in the base section The battery is secured in position in a moulded recess accessed from the bottom of the units and the mains transformer is secured on spacers above the printed circuit board The thermal printer is mounted on spacers moulded to the base and the paper tray motor mounted in a similar way 4 5 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC H L L AT 102 Service Handbook Exploded View Lower Casing EMC shield ECG A Processing Part IMPORTANT Mains Isolation Shield This must placed between the mains transformer and board DC Motor with Cable for paper tray EMC shield Paper Tray Worm i Thermal Print 5 ye Paper Tray Z Printer NS Toothed Wheel i Casing Securing Screws x6 4 6 THE ART OF DIAGNOSTICS Section 4 Module Removal and Replacement AT 102 Service Handbook Exploded View Upper Casing 03 ss for LCD us Keyboard Foil 4 7 CN e N N Qo 2 lt Er z oH o O lt 0 THE ART OF DIAGNOSTICS SC L L AT 102 Service Handbook Prerequisites Test Equipment Tools and Accessories The following list gives the tools test equipment and accessories require
71. ordance with this instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense THE ART OF DIAGNOSTICS 102 ECG Recorder Service Handbook Contents Disposal Instructions and Battery Care Do not dispose of battery boards or components by fire or incinerator Danger of Explosion Do not open the battery casing Danger of acid burn Only dispose of the battery boards or components in official recycling centres or municipally approved areas Alternatively used batteries and components can be returned to SCHILLER AG for disposal Units no longer required can be returned to SCHILLER AG for disposal Alternatively dispose of the unit in municipally approved recycling centres Xl Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER XII AT 102 ECG Recorder Service Handbook Safety Notices Operational Precautions Before using the unit ensure that an introduction regarding the unit functions and the safety precautions has been provided by a product representative The guidelines for patient electrode placement are provided as an overview only They are not a substitute for medical expertise IEC 601 1 1 states that the patient must remain at least 1 5 metres clear of the AT 102 When this i
72. out Format A stage printout is given at the end of every stage When the stages are less than 2 minutes long or a stage is held then a prinout is given every 2 minutes The waveforms are averaged to give 4 x 3 plus 1 rhythm lead or 6 x 2 The rhythm lead printed is the ST lead defined below ST Amplitude Lead Define the lead that is used for ST measurement This lead is also printed as the rhythm lead if set in the stage printout 1 22 THE ART DIAGNOSTICS 102 ECG Service Handbook otress Settings Defining Editing Exercise Protocols GENERAL EDIT SETTING PROTOCOL 06 16 17 05 02 PROTOCOL PROTOCOL BIKE TREADMILL For a bicycle the following can be defined Section 1 Operating Elements E Protocol Name The name defined here appears in the general stress settings when selecting the two default bike protocol see previous page Base Load The load in Watts applied during the warm up period Step load The load increase at every step Recovery Load The load applied during the recovery phase Step Interval The duration of each step For a treadmill Protocol the following can be set Protocol above Step Interval The duration of each step B Speed The individual treadmill speed of each step Elevation The individual treadmill elevation of each step Article Number 2 540 028 SCHILL
73. outh and skin if contact is made clean contaminated area immediately with fresh water THE ART OF DIAGNOSTICS 102 ECG Recorder Service Handbook Contents safety Notices Precautions for Operation with other Devices Use only accessories and other parts recommended or supplied by SCHILLER AG Use of other than recommended or supplied parts may result in injury inaccurate information and or damage to the unit Externally connected units must use the same common earth Externally connected units must use an original SCHILLER interface cable if several units are coupled there is a danger of summation of leakage currents When two or more units are coupled together an isolation transformer must be used in the mains supply The 102 complies with EMC regulations for medical products which affords protection against emissions and electrical interference However special care must be exercised when the unit is used with high frequency equipment There is no danger when using the ECG unit simultaneously with electrical stimulation equipment However the stimulation units should only be used at a sufficient distance from the electrodes In case of doubt the patient should be disconnected from the recorder To avoid possible interference from the Ergometer when carrying out an exercise test it is recommended that both the AT 102 and the Ergometer are connected to the same common ground XIII Article
74. prevent the possibility of leakage current when an external printer is connected always ensure that the mains lead or the potential equalisation next to the mains connector is attached to the AT 102 A yellow green ground cable is supplied as an option Article number 2 310 005 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 1 7 SCH H AT 102 Service Handbook Introduction Keypad 4 5 6 7 8 9 0 1 12 13 14 15 102 ECG Service Handbook Section 1 Operating Elements Introduction 1 Softkeys the function of these keys changes depending on the screen displayed The function of these keys is shown on the screen above the keys If nothing is written above a softkey it has no function for the current screen 2 Auto Mode recording in Auto mode 1 Press the Function key 17 followed by the AUTO key 2 for auto mode 2 STOP printout confirm new setting Open Close paper tray to replace thermal printing paper The top figures on the number keys 1 and 2 designated lt and gt change the lead group displayed on the screen forward and backward resp 6 Auto sensitivity key automatically sets the ECG printout sensitivity AUTO mode only to the best setting for the signal strength bmm mV or 10mm mV The top figures the number keys designated 5 10 and 20 the sensitivity of the ECG both on the screen and on the manual printout The sensitivi
75. re Update M Schiller AT 102 Version 1 04 Update Version Loader N 8 Click the config icon The following screen is displayed xl Cancel Port cot Baud Auto To exit the program without updating click the close icon 9 Select the applicable COM port 1 or 2 Set the Baudrate to Auto or to the same Baud rate as set in the AT 102 10 Click on update version to update the system software 11 A series of beeps indicates that the software has been successfully updated The updated software can be used immediately Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 5 17 SCHILLER 5 18 THE ART OF DIAGNOSTICS AT 102 Service Handbook 102 Service Handbook Section 6 spare Parts Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS Section 6 Spared Parts 6 1 SC L L AT 102 Service Handbook Ordering Information 6 2 WARNING Always use SCHILLER replacement parts and disposables or products approved by SCHILLER Failure to do so may endanger life and invali date the guarantee NOTE Your local representative stocks all the disposables and accessories avail able for the AT 102 Details of all local subsiduaries and agents are given on our web site www schiller ch In case of difficulty or to obtain the address of your local dealer please contact the head office
76. rings Thermal Printer Replacement To replace the thermal printer proceed as follows 1 Position the printer in the paper tray print assembly so that the printer mounting plate lips slot into the dedicated cutouts in the assembly 2 Insert the two tensioning springs so that the springs are positioned over the outer two moulded spring supports and in the indent hole in the printer mounting plate 3 Position the printer retaining bar and secure the printer and printer retaining bar with the four retaining screws Ensure that the cable assemblies from the printer to the PCB are not caught and are not strained Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCH H AT 102 Service Handbook Battery Pack Battery Pack Removal WARNING The Warnings and Cautions at the beginning of the chapter must be Observed Ensure that the mains cable is removed before commencing To remove the Battery Pack proceed as follows 1 Remove the top assembly as detailed previously Disconnect the two bayonet connectors for the Main board P2 Gently return the top assembly in position and firmly holding both parts turn the unit up side down 4 Unscrew the battery compartment cover plate retaining screws and remove the battery Checks and Tests After Battery Replacement Program all static settings which will have been lost when the battery was disconnected including date and time THE ART OF DIA
77. roblems Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L 102 Service Handbook DOES THE PAPER JAM OR NOT STOPAT THE CORRECT POSITION 7 DOES THE PROBLEM STILL EXIST AT 102 Fault Diagnosis Chart Sheet D Printer Problems U THE ART OF DIAGNOSTICS 102 Service Handbook Section 3 Fault Finding ISA DIGITAL RS CONTROLLED STRESS TEST EQUIPMENT USED AT 102 Fault Diagnosis Chart Sheet F Exercise Mode Problems THE ART OF DIAGNOSTICS Article Number 2 540 028 SCHILLER AG 2002 SCH H AT 102 Service Handbook CAN THE CALIBRATION PROCEDURE BE CARRIED OUT AT 102 Fault Diagnosis Chart Sheet G Spirometry Problems THE ART DIAGNOSTICS 102 Service Handbook Section 3 Fault Finding SETTING CORRECT AT 102 Fault Diagnosis Chart Sheet H Communication RS Problems Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCHILLER Functional Check Test Procedure Connect unit to mains supply Mains indicator LED is lit If no ECG simulator is connected a short audible alarm is generated and the lead indications in the display are flashing Switch the unit on by pressing the ON key on the keyboard LCD screen comes on and shows three ECG traces and a number of status indications ECG traces are barely visible No traces visible on the LC
78. s not possible an isolation transformer must be installed must be ensured that neither the patient nor the electrodes including the neutral electrode come into contact with other persons or conducting objects even if these are earthed This unit is CF classified and defibrillation protected when the original 4 patient cable is used However as a safety precaution when possible remove electrodes before defibrillation Do not touch the unit casing during defibrillation If the patient cable should become defective after defibrillation lead off is displayed and an acoustic alarm given Do not operate the unit if the earth connection is suspect or if the mains lead is dam aged or suspected of being damaged This product is not designed for sterile use This product is not designed for outdoor use Do not use this unit in areas where there is any danger of explosion or in the presence of flammable gases such as anaesthetic agents Do not operate the unit if the earth connection is suspect or if the mains lead is dam aged or suspected of being damaged There is no danger when using the ECG unit for a patient with a pacemaker fitted The LCD screen assembly is heavy and can cause injury if closed unintentionally Ensure fingers are kept clear Surface temperature of applied parts must not exceed 41 If the display is damaged a leakage of fluid may occur do not inhale the vapour from this fluid and avoid contact with m
79. sheet at 25mm s Leads are printed in long form 2 sheets at 25mm s Leads are printed in long form 2 sheets at 50mm s No printout of average cycles Leads are averaged over the entire 10 second recording and printed in 4 groups of 3 leads at 25mm s with the two selected rhythm leads at the bottom of the page at 25mm s Leads are averaged over the entire 10 second recording and printed in 4 groups of 3 at 50mm s with the two selected rhythm leads at the bottom of the page at 25mm s Leads are averaged over the entire 10 second recording and printed in two groups of six at 50mm s with the two selected rhythm leads at the bottom of the page at 25mm s Select the rhythm lead 1 and rhythm lead 2 as described above Rhythm Lead 1 Rhythm Lead 2 Select any lead 1 II Ill aVR aVF V1 to V6 Select any lead I 11 III aVR aVF V1 to V6 Measurements Markings and Interpretation Measurements Markings Interpretation Select yes or no to print a detailed table of measurement results Select yes or no to print reference markings on the ECG average cycle print A vertical marker shows the beginning and end of P wave and QRS and the end of the T wave Select yes or no to print interpretation statement Full details of the interpretation option are given in the SCHILLER ECG Measurement and Interpretation booklet art No 2 510 179 THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section
80. sor for pulmonary function testing with disposable mouthpiece Dimensions of SP 250 118 x 36 x 28 mm approx 120 g 4 6 x 1 4 x 1 1 in approx 0 26 16 Measuring method Pneumotachometer Measuring accuracy According ATS 396 Flow impedance lt 0 2 mbar s l at 12 1 5 SPIROVIT SP 260 Pneumotach Flow sensor for pulmonary function testing with reusable mouthpiece Dimensions of SP 260 125 x 36 x 28 mm approx 160 g 4 9 x 1 4 x 1 1 in approx 0 34 16 Measuring method Measuring accuracy Flow impedance same as SP 250 Delivered 1 pneumotach sensor choice of SP 250 disposable P N 2 100022 or SP 260 reusable sensor P N 2 100551 Accessories 2 nose clips and either 1 pack of disposable plastic mouthpieces for SP 250 P N 2 100077 or 1 pack of disposable filters for SP 260 P N 2 100123 1 operating manual 7 6 THE ART OF DIAGNOSTICS 102 Service Handbook Section 7 Technical Data Technical Data Standard CARDIOVIT AT 102 ECG with 12 simultaneous leads pacemaker detection automatic ECG measurement Accessories 1 10 lead patient cable 1 set of electrodes or disposable electrodes 1 power cable 1 pack chart paper Operating manual Software options SEMA 200 PC software to save validate and achive ECG and spirometry data on PC Hardware options Equipment trolley Spirometry sensor SP 250 or SP 260 Calibration syringe Vacuum electrode system VAC 100 External printer Configurations The CARDIOVIT
81. t up side down and rest on a soft antistatic cloth 2 Unscrew and remove the six countersunk retaining screws and washers situated in the extreme corners and edges of the unit 4 Grasping the top and bottom of the unit to ensure that the two assemblies cannot part carefully return the unit to the standing position Gently lift the Top Assembly sufficiently to access to the interconnecting cables Disconnect the cable assembly between the main board MK 18 1 and the keyboard and the ribbon and dual wire cable assemblies between the power supply and the LCD screen board 6 Gently lift the Top Assembly away from the Base Assembly and place on a soft cloth Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SCH H AT 102 Service Handbook Opening and Closing the Case Support the top casing in an upright position to prevent straining the cable assemblies and connectors N 4 10 THE ART OF DIAGNOSTICS 102 Se Handbook Section 4 Module Removal and Replacement Opening and Closing the Case Top Assembly Replacement To replace the Top Assembly proceed as follows 1 Article Number 2 540 028 SCHILLER AG 2002 Check that all boards and components are firmly secured Check for loose screws Ensure that no screws or foreign bodies are loose in the bottom of the case Inspect all the internal cable assemblies and ensure that they are in good conditi
82. ta in serial data from the keyboard to the CPU KBS Keyboard strobe KONV Convert this signal initiates the conversion of the incoming signal from the ECG amplifier LA Left arm LEDB Battery LED Annex 4 THE OF DIAGNOSTICS 102 Service Handbook LEDMAINS LCA LCD KONT LD1 2 3 4 LDS LOE LP LSRAM LWE MCLK MOD MOFF MON NWTZ NMI OFF PDS PM PMARK PMPON PMNEG PMPOS QTRRG RAS RES p RTS R W RES RESLCD Article Number 2 540 028 SCHILLER AG 2002 Annex A Glossary Signal indicating mains connected to operate LED indicator on the keyboard Liquid crystal address enable LCD contrast sets the 18 V voltage level from which the LCD backlight power is generated and thus the contrast of the screen Lower LCD data Lower data strobe Lower output enable Line synchronisation Lower output enable control signal for static RAM Lower write enable LCD control signal derived from FLM Motor clock speed control for the printer motor Control signal from the battery charging circuit Motor off Motor ON printer motor enable signal Mains supply Non maskable interrupt activated by the reset button Off signal from the OFF key to switch off the power supply Control signal derived from FLM unity waveform 1 2 FLM frequency Paper mark signal Paper mark detection signal Pacemaker detection pulse Pacemaker negative indicates th
83. tient data screen for entry of new patient or data acquisition screen Paper Mode The internal printer can print on A4 or letter size paper Set according to the paper used 1 27 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook System Settings Communication COMMUNICATION Baudrate 115200 Line Phone No 00 41 41 7604242 Modem Init ATBOL1VOQEOSO O Baudrate Select a Baud rate between 115200 and 9600 Baud according to the modem computer used Most computers can connect at 115200 Baud and the standard modem speed is 57600 Baud If problems are experienced during transmission reduce the Baud rate Mode Select between line computer connected directly to the RS 232 interface or modem for transmission over the phone network Phone No Enter the telephone number preceded by or P tone or pulse comma gives a one second pause in dialling this may be necessary for example if an outside line is required Modem Init Enter the modem initialisation codes Full details will be found in the user guide for your modem However the modem initialisation must contain at the minimum the following commands with the prefix 0 modem sends response 0 numerical response codes no command echo The standard modem initialisation code is ATBO
84. tional tests that are required on the module or on associated modules or software are also detailed In text diagrams support the text where required and provide location details of connectors test points and adjustment potentiometers Specific warnings and cautions are given in the text where applicable The part numbers for all replaceable modules are given in Chapter 6 The AT 102 has the following adjustments Battery Charge Voltage VR3 on the main board MK 18 1 ECG Amplifier reference voltage and ramp slope VR1 and VR2 on the main board 18 1 We recommend that the reference voltages are checked every year Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 5 3 SC L E AT 102 Service Handbook safety Notices and Conditions WARNINGS Mains power is potentially lethal disconnect the mains before disas sembling the unit and remove the mains cable Setting the battery charge voltage requires that mains is connected during this procedure Exercise extreme caution Be aware at all times hat mains voltage is present All other maintenance calibration checks or adjustments must be carried out with battery power only CAUTIONS The AT 102 contains static sensitive cmos components observe antistatic precautions When carrying out any maintenance procedures always place the unit on an earthed antistatic mat Personnel must be earthed when handling any boards or components Alwa
85. to dry completely Ensure that good quality fresh paper is installed Change the PM detector Change the Printer Motor changes the complete printer Printout uneven Fading at top or Check evenness of spring pressure of the bottom printer to roller Check roller for wear and symetry Clean print head pixel array with alcohol Ensure that good quality fresh paper is installed Change the printer change the main board Faulty pixel Clean print head pixel array with alcohol Replace printer Printout too faint or too dark Clean print head pixel array with alcohol General quality poor Ensure that good quality fresh paper is installed Change printer change main board 3 14 THE ART OF DIAGNOSTICS 102 Service Handbook Section 3 Fault Finding RS 232 Interface and Spiro Check There are no specific tests that can be performed on the RS 232 interface However the RS 232 UART settings can be checked to ensure correct protocol and speed If a spiro sensor is connected to the RS 232 connector the sensor type can be displayed to ensure that it is the correct type The Comm test screen is entered for the settings screen MENU SETUP gt SYSTEM SETTING gt TEST and INFO gt COMM TEST 06 16 17 02 02 AT 102 V1 04 CSM 81575 070 00000063 11 10 2002 Copyright 2002 by SCHILLER AG Switzerland PRINT SETUP COMM TEST
86. tor and monitor Power supply requirements 220 240 V nominal 50 60 Hz 110 115 V nominal 50 60 Hz stand alone operation with built in rechargeable battery LED indicator for mains operation integrated power supply unit Battery capacity 4 hours of normal use approx 300 automatic ECG print outs or 100 spirometry records Power Consumption Max 30VA Line frequency filter Distortion free suppression of superimposed 50 or 60 Hz sinusoidal interferences by means of adaptive digital filtering Frequency range of digital recording system 0 Hz 150 Hz IEC AHA Chart paper Thermo reactive Z folded 210 mm wide A4 Printing process High resolution thermal head printer 8 dots mm amplitude axis 40 dots mm time axis Q 25 mm s Interfaces RS 232 interface to connect spirometry sensor data transmission to PC SEMA 200 and external modem connection parallel port for external printer Memory Storage for up to 40 ECG or Spirometry recordings Environmental conditions Temperature operating 10 to 40 Temperature storage 10 to 50 Relative humidity 25 to 9596 no condensation Pressure during operation 700 to 1060 hPa Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 7 3 SCHILLER AT 102 Service Handbook Technical Data Safety Standards Safety standard Protection class Conformity CF according IEC 60601 1 and IEC 601 2 25 according to IEC
87. ty is 5 10 or 20 mm mV 8 The top figures on the number keys designated 5 10 25 and 50 set the speed of the ECG both on the screen and on the manual printout The speed on the screen can only be set to 25 or 50 mm s The speed of the manual printout can be 5 10 25 or 50 mm s The 5 and 10 mm s settings are both on the same key which toggles the two speeds 9 Inserts 1 reference marker on the screen and printout Recentres trace 10 Toggles the QRS beeper ON OFF 11 Myogram filter ON OFF The cutoff frequency can be user defined in Setup 12 Delete last typed character 13 Patient data key Press this key to enter a new patient or modify the data for the current one NOTE The patient data screen or the ECG screen is the first screen displayed on inital switch on This is set for user preference in the system settings See following 14 ON OFF Keys 15 Mains Indicator lit when mains connected 16 Press function key 17 and the UP DOWN arrows to adjust screen contrast When entering patient data use the LEFT RIGHT arrow keys to move the cursor in the data field Use the UP DOWN arrow keys to go up down to the next data entry 17 Function Key Fn When pressed before another key initiates the second function of that key For example second letters on the keypad 6 c o etc are entered by holding i the function key before pressing the letter key 19 Article Number 2 5
88. up of the module may be applicable The removal and replacement instructions for all replaceable modules along with any setup or check procedures required are given in Chapters 4 and 5 If the initial fault finding table does not indicate the area where the fault exists re check all the settings and parameters that have been entered If these are correct check the software General Check Procedures The procedure detailed here is a general confidence check of the unit after an internal module or board has been replaced is not a full functional test which can only be carried out with dedicated equipment in the factory but is intended to provide a general confidence check in all the major AT 102 functional areas The instructions given here are guides to the basic functions If more operating information is required general settings comprehensive menu guides etc please refer to Chapter 1 in this publication or the AT 102 user guide 3 2 THE ART OF DIAGNOSTICS 102 Service Handbook Section 3 Fault Finding Fault Finding Chart NO IS THE GREEN MAINS LED LIT DOES THE LCD LIGHT SHEET TWO NOTE The removal and replacement instructions and the location of all boards cable assemblies and connectors are given in Chapter 4 AT 102 Initial Fault Diagnosis Chart Sheet 1 Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 3 3 SCH H AT 102 Service Handbook
89. vice Bike Bike Erg900 911 Device Treadmill TM425 TM1400ES km h Blood Pressure Off Bike protocol 1 252525 Bike protocol 2 505050 TM protocol 1 Bruce TM protocol 2 User Stage print 4 3 1 Rhythm J point J 20msec ST Ampl Lead SELECT Selecting the ERGO Device Ergo devices available for use with the AT 102 are as follows Bikes i The Ergoline digitally controlled exercise bicycle 900 911 SECA CT100 mod 545 Treadmills a The Ergoline digitally controlled treadmill TM435 TM4000ES m 770 1500 Blood Pressure Entry Select between Off Auto and Manual When Manual is selected the BP screen for entry of blood pressure is displayed 55 seconds before the end the stage When the stages are less than one minute long or a stage is held then the BP screen is displayed every 2 minutes The AUTO function is not available at the time of print 121 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS SC L L R AT 102 Service Handbook Stress Settings Selecting the Default Test Protocol Two protocols for a bike and two for a treadmill are available for selection when starting a stress test the two protocols displayed when starting a stress test are defined here The user defined protocols one for a treadmill and one for a bike are defined by the user see following page Defining the Stage Print
90. ys use an antistatic bag when transporting boards or components Care must be taken when removing and replacing connectors Never use force Never strain the cable assemblies The procedural steps given for each module must be followed in the order given The outer surfaces of the AT 102 are susceptible to abrasion damage To prevent scratching always place on a soft non abrasive cloth Conditions 5 4 The unit must be placed on an antistatic mat and antistatic precautions observed when any maintenance 1 carried out on the AT 102 The room temperature should be between 18 and 28 degrees THE ART OF DIAGNOSTICS 102 ECG Service Handbook Section 5 Adjustments Test Equipment The following proprietary and dedicated test equipment is required to fault find and carry out all board checks and adjustments on the AT 102 The list of proprietary equipment is not comprehensive Recommendations of suitable proprietary test equipment can be obtained from the SCHILLER Service Department Proprietary Test Equipment Tools Simulator e g Phantom 320 Oscilloscope Digital Multimeter Standard tool kit with a selection of cross bladed flat bladed and posi drive screwdrivers pliers and general tools SCHILLER 10 lead patient cable Number 2 400070 2 400071 for USA Article Number 2 540 028 SCHILLER AG 2002 THE ART OF DIAGNOSTICS 5 5 SCH LL AT 102 Service Handbook Main Boar

AT-102 - Frank`s Hospital Workshop

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