1. Manuals
  2. Brands
  3. Schiller Manuals
  4. Medical Equipment
  5. Cardiovit AT-10
  6. Service handbook

Schiller Cardiovit AT-10 Service Handbook

Ecg and spirometry unit
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
SCHILLER AT-10 ECG and Spirometry Unit
SERVICE HANDBOOK Issue c April 2002
Spirometry Unit
April 2002
Cardiovit
AT-10
ECG and
Service Handbook
SCHILLER AG
Altgasse 68
CH-6341 Baar, Switzerland
Phone: + 41 41 766 42 42
Fax: + 41 41 761 08 80
Home page: http://www.schiller.ch
i
Article Number: 2. 540 005

Advertisement

Table of Contents
loading

Related Manuals for Schiller Cardiovit AT-10

Summary of Contents for Schiller Cardiovit AT-10

  • Page 1 SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002 Cardiovit AT-10 ECG and Spirometry Unit Service Handbook SCHILLER AG Altgasse 68 CH-6341 Baar, Switzerland Phone: + 41 41 766 42 42 Fax: + 41 41 761 08 80 Home page: http://www.schiller.ch...
  • Page 2 SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002 AT-10 Service Handbook Article Number 2. 540005 Issue 1: January 1993 Issue 2: July 1998 Issue c: April 2002 Associated Documents Guide to SCHILLER Interpretation and Measurement Program E / D / F Article No.
  • Page 3 SCHILLER HmbH, Kampmüllerweg 24, A-4044 Linz, Austria Austria Tel.: + 43 732 709 90 Fax : + 43 732 757 000 SCHILLER Medical S.A, BP 50, 19, Avenue de la Gare, F-67162 Wissembourg / Cedex, France France Tel.: +33 3 88 63 36 00...
  • Page 4 The Information in this guide has been carefully checked for reliability; however no guarantee is given as to the correctness of the contents and SCHILLER makes no representations or warranties regarding the contents of this manual. We reserve the right to revise this document and make changes in the specification of the product described within at any time without obligation to notify any person of such revision or change.
  • Page 5 DO NOT USE SOLVENT CLEANERS 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. THE AT-10 COMPLIES WITH EMC REGULATIONS FOR MEDICAL PRODUCTS WHICH AFFORDS PROTECTION AGAINST EMISSIONS AND ELECTRICAL INTERFERENCE.
  • Page 6 PATIENT CONNECTION IS FULLY ISOLATED AND DEFIBRILLATION PROTECTED. SCHILLER CAN ONLY GUARANTEE PROTECTION AGAINST DEFIBRILLATION VOLTAGE, HOWEVER, WHEN THE ORIGINAL SCHILLER PATIENT CABLE IS USED. WHEN NON-MEDICAL DEVICES ARE CONNECTED TO THE RS-232 INTERFACE ENSURE THAT BOTH UNITS ARE SECURELY CONNECTED TO THE SAME EARTH POTENTIAL.
  • Page 7 SERVICE HANDBOOK Issue c April 2002 What´s in this Book THE SERVICE PHILOSOPHY FOR ALL SCHILLER UNITS IS FAULT FINDING TO MODULE LEVEL. THE PURPOSE OF THIS BOOK IS TO PROVIDE ALL THE INFORMA- TION NECESSARY TO ENABLE THE SERVICE ENGINEER TO EFFICIENTLY LOCATE AND REPLACE A FAULTY MODULE.
  • Page 8 SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002 What´s in this Book Circuit Diagrams & Board Layouts The circuit diagrams and component layouts are provided for all boards. These details are provided for information only. viii...

  • Page 9: Table Of Contents

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 Chapter 1 Operating Elements Contents Introduction The Keyboard Alpha Numeric Keypad General Purpose Keys Control Keys Function Keys Resting ECG Function Keys Exercise Function Keys...

  • Page 10: Introduction

    Introduction The Schiller Cardiovit AT-10 The CARDIOVIT AT-10 is a sophisticated compact work-station for cardiological diagnosis. It has the facility to carry out both resting and exercise ECGs with the test results displayed on the integral LCD and recorded on the built-in thermal printer.
  • Page 11 Operating Elements SERVICE HANDBOOK Issue c April 2002 Introduction (cont.) The main operating and connection modules of the Cardiovit AT-10 are as follows: Keyboard The keyboard is divided into three functional areas. The top area comprises the unit ON/OFF keys, the paper tray key and other general function keys.

  • Page 12: The Keyboard

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements The Keyboard Alpha Numeric Keypad The functions of the dual purpose keys on the alphanumeric keyboard are as follows: DUAL PURPOSE KEYS FUNCTION '1' to Printout Speed Selection 2.5, 5, 10, 12.5, 25, 50, or 100...
  • Page 13 Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 The Keyboard (cont.) The top line of the keyboard is dual purpose and when the unit is in the ECG mode, these keys double as control for the direct setting of speed and sensitivity for manual printout.

  • Page 14: Control Keys

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements The Keyboard (cont.) Control Keys The Control keys are situated at the top of the keyboard and contain the function keys which are common to all function modules. The control keys are as follows:...

  • Page 15: Function Keys

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 The Keyboard (cont.) Function Keys The function keys are arranged in a group in the middle of the keyboard. The left part of the group comprises keys for the resting ECG recording functions.

  • Page 16: Exercise Function Keys

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements The Keyboard (cont.) Exercise Function Keys * The grade increases when pressed in conjunction with the YES (+) key and decreases when pressed in conjunction with the NO (-) key.

  • Page 17: Connector Panels

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 Connector Panels Side Panel The following are located on the side panel: 1. 1 X RS-232C interface for connection of a bicycle with blood pressure measuring device (Port 1) 2.

  • Page 18: Back Panel

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements Connector Panels (cont.) Back Panel The following connectors are located on the back panel: 1. Identification Plate 2. Mains Module 3. Connector for external video 4.

  • Page 19: Mains Panel

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 Connector Panels (cont.) Mains Panel The following are located on the mains panel: 1. Mains fuse (200 mA slow) and voltage selector 2. Mains connection 3.

  • Page 20: Liquid Crystal Display

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements Liquid Crystal Display The liquid crystal display (LCD) performs both as a real-time monitor and as an alphanumeric display for menu selection, data input and the provision of important information.

  • Page 21: Calibration

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 Calibration At any time during the ECG recording, a 1mV calibration signal can be manually produced by pressing the <1mV> key on the keyboard. This 1mV square wave signal is indicated both on the display and on the printout.

  • Page 22: System Setup

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements System Setup There are several general settings for the AT-10. Press the <FNCT> key to call up the initial menu. Two options are presented. Option 1 is for entry of the operator information - MTA (Medical technical Assistant).

  • Page 23: Save Settings

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 System Setup (cont.) Save Settings Programmable parameters can be stored as base settings. These stored settings are not erased when the unit is switched off. To call up this function, select the last item in the System Setup menu and the Save Settings menu is displayed as follows: See the AT-10 Operating Manual for full explanation.

  • Page 24: Ecg Menu

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements ECG Menu To call up the menu for any of the main functions, simply press the respective function key (eg <ECG> for resting ECG, <EXERCISE> for exercise ECG, etc). To return from any menu directly to the Monitor mode, press the <FNCT>...

  • Page 25: Filters

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 Filters There are five filters which can be set before starting the recording of an ECG. To call up the menu for these filters, press the <ECG> key, then select option `ECG Settings´ followed by 'Filters´. The...

  • Page 26: Number Of Printed Copies

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements Number of Printed Copies The number of copies to be printed out can be pre-selected. To do this, press the <ECG> key, select the ECG Settings / Further Settings menu option and then select ''Number of copies'' (1).

  • Page 27: Lead Sequence

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 Lead Sequence The lead sequence can be set to either Standard or Cabrera. The sequence required can be selected by pressing the <ECG> key, selecting the ECG Settings / Further Settings menu option and then selecting ''12 Lead Sequence'' (2).

  • Page 28: User-Programmable Lead Group

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements User-programmable Lead Group The user-programmable group comprises 12 leads which can be individually programmed. To program these leads, press the <ECG >key, select the ECG Settings menu option and then select ''Programmable Leads'' (5).

  • Page 29: Programmable Channels For Printout

    Chapter 1 SCHILLER AT-10 ECG and Spirometry Unit Operating Elements SERVICE HANDBOOK Issue c April 2002 Programmable channels for Printout The number of channels for the printout can be set to either 3, 4 (5,7), 6 or a user-defined number.
  • Page 30 SCHILLER AT-10 ECG and Spirometry Unit Chapter 1 SERVICE HANDBOOK Issue c April 2002 Operating Elements Page 1.22...
  • Page 31 Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Chapter 2 Functional Overview Contents Block Diagram Brief Description Overall Functional Description Power Supply Processor and Memory Keyboard Power Supply 2.11 On/Off Control and Low Battery Voltage Monitoring 2.11...
  • Page 32 SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Page 2.2...

  • Page 33: Block Diagram

    Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Block Diagram PAPER MOTOR AT-10 MAINS STEPPER MOTOR INTERFACE MK 8-5 PAPER MARK DETECTION POWER SUPPLY MK 8-6 THERMAL PRINT HEAD 24 V BATTERY...

  • Page 34: Brief Description

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Brief Description The AT-10 comprises the following boards and major functional areas: Power Supply The power supply rectifies the mains input and generates all the required voltages for the AT-10 electronics. Two...
  • Page 35 Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Brief Description (cont.) ECG Amplifier Board This board amplifies and carries out some signal processing on the incoming ECG signals. To ensure absolute safety of the patient, all incoming/outgoing data is via opto-isolators.
  • Page 36 SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Page 2.6...

  • Page 37: Overall Functional Description

    Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Overall Functional Description Power Supply Mains is applied to the power supply via a mains filter, on/off switch and a voltage selection switch. The voltage selection switch connects the supply to the relevant winding of the mains isolation transformer.

  • Page 38: Keyboard

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Overall Functional Description (cont.) The serial input/output is transmitted to the master CPU at 2.5 MBaud and commands are received from the master CPU at 38.4 kBaud. To ensure absolute patient safety, an isolation transformer galvanically isolates the AT-10 power supply from the patient.
  • Page 39 Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Overall Functional Description (cont.) ERGO The analog stress I/O circuit contains a digital to analog converter that converts load or speed control data to an analog voltage. The elevation and speed of the treadmill is returned as an analog value and converted to digital data for interpretation by the main CPU.
  • Page 40 SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Page 2.10...
  • Page 41 Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Power Supply Mains is applied to the line filter via the on/off switch and two 200 mA, slow-blow fuses. The line filter incorporates a temperature variable resistor to ensure that the current is limited at initial switch-on.

  • Page 42: Power Supply

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Power Supply (cont.) +5V and ±12V Switching Regulators The 5V and 12V step down switching regulators both function in the same manner. The description given here is for the 12V regulator.
  • Page 43 Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Power Supply (cont.) The frequency of the current/frequency converter at a charge or discharge rate of 1A is approxi- mately 31.3Hz. The counter counts up when the battery is discharging and down when the battery is charging. The count is converted to an analog value by D/A converter U13 for use by the CPU in determining the charge state of the battery.
  • Page 44 SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Page 2.14...

  • Page 45: Processor Board

    Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Processor Board Overall control and coordination of all circuits and all peripherals (with the exception of the paper tray carriage motor), is by the CPU (U46) situated on the Microprocessor Board. The CPU used is the 68000 and it works in conjunction with a dedicated gate array IC (U47).

  • Page 46: Communications Controller

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Processor Board (cont.) The static RAM stores the following: • Last 10 seconds of ECG data • Patient data The AT-10 EEPROM memory stores some user defined parameter settings and comprises a single 64k EEPROM chip (U27).

  • Page 47: Stress Analog Input/Output

    Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Processor Board (cont.) Stress Analog Input/Output The analog input/output circuit comprises a digital/analog converter circuit and buffer circuits that carry out the following functions: •...

  • Page 48: Power On Reset

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Processor Board (cont.) Graphics Controller A VGA standard signal (480 rows with 640 pixels/row with a horizontal sync of approximately 31.8 kHz and a vertical sync of 60 Hz), is generated by a graphics processor chip (U39) and associated components.
  • Page 49 Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit SERVICE HANDBOOK Issue c April 2002 Functional Overview Page 2.19...

  • Page 50: Ecg Amplifier

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview ECG Amplifier ECG Isolated Power Supplies The DC/DC converter circuit produces all the isolated power voltages required by the ECG Amplifier circuit. The +12V rail from Power Supply MK 8-6 is applied to isolation transformer U2 via a pulsing circuit.

  • Page 51: Pacemaker Trigger

    Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 ECG Amplifier (cont.) Pacemaker Trigger The RA lead is fed, before it is filtered, to the pacemaker detection circuit. The RAPACE signal from the patient is differentiated and fed to the ECG processor. The negative pulses (PMNEG), and the positive pulses (PMPOS) indicate the start and end slope of the pacemaker pulse.

  • Page 52: Cable Tester

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview ECG Amplifier (cont.) Cable Tester The cable tester circuit checks the resistance of an individual lead in the patient cable. The resistance of the lead must be between 10KOhms and 1MOhms.

  • Page 53: Interface Board

    Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Interface Board Thermal Printer Control The Thermal Printer stepper motor is controlled by stepper motor controller U1. The MON signal from the processor is the enable signal for the controller and the MCLK signal sets the speed; 209Hz gives a paper speed of 2.5 mm/s, 2.09kHz gives a paper speed of 25 mm/s.
  • Page 54 SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Page 2.24...

  • Page 55: Paper Carriage Control

    Chapter 2 SCHILLER AT-10 ECG and Spirometry Unit Functional Overview SERVICE HANDBOOK Issue c April 2002 Interface Board (cont.) Paper Carriage Control The paper tray carriage motor control circuit works independently from the CPU and has its own power supply. The power supply is enabled as follows: •...
  • Page 56 SCHILLER AT-10 ECG and Spirometry Unit Chapter 2 SERVICE HANDBOOK Issue c April 2002 Functional Overview Page 2.26...
  • Page 57 Chapter 3 SCHILLER AT-10 ECG and Spirometry Unit Fault Diagnosis SERVICE HANDBOOK Issue c April 2002 Chapter 3 Fault Diagnosis Contents Introduction Test Equipment Fault Diagnosis AT-10 Initial Fault Diagnosis Chart (Sheet 1) AT-10 Initial Fault Diagnosis Chart (Sheet 2)

  • Page 58: Introduction

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 3 SERVICE HANDBOOK Issue c April 2002 Fault Diagnosis Introduction The purpose of this chapter is to provide fault-finding procedures that will quickly and efficiently identify a fault on an AT-10 to a specific module. The fault-finding procedures are designed so that test equipment is kept to a minimum.

  • Page 59: Test Equipment

    Schiller Service Department. Dedicated Test Equipment • RS Test Cable Assembly required for the RS self test In addition to the above a Schiller patient cable (Schiller Number 2.400011) is required when carrying out simulated ECG tests. Proprietary Test Equipment/Tools •...

  • Page 60: Fault Diagnosis

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 3 SERVICE HANDBOOK Issue c April 2002 Fault Diagnosis Fault Diagnosis Use the fault finding charts and procedures on the following pages to indicate a faulty area or module. In most cases the fault finding charts should indicate the most likely faulty area.

  • Page 61: Initial Fault Diagnosis Chart (Sheet 1)

    Chapter 3 SCHILLER AT-10 ECG and Spirometry Unit Fault Diagnosis SERVICE HANDBOOK Issue c April 2002 CONNECT MAINS TO THE UNIT AND SWITCH ON DISCONNECT THE MAINS SUPPLY AND CHECK THE IS THE GREEN MAINS MAINS FUSE (IN THE MAINS...

  • Page 62: Initial Fault Diagnosis Chart (Sheet 2)

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 3 SERVICE HANDBOOK Issue c April 2002 Fault Diagnosis CHECK THE LCD CONTRAST IS THE CONTROL ON THE RIGHT- DATA BOX HAND PANEL OF THE UNIT. GO TO FAULT DIAGNOSIS (DISPLAYED IN THE...

  • Page 63: Fault Diagnosis Chart (Sheet A - Power Problems)

    Chapter 3 SCHILLER AT-10 ECG and Spirometry Unit Fault Diagnosis SERVICE HANDBOOK Issue c April 2002 MAINS FUSE RUPTURED REMOVE THE TOP ASSEMBLY . VISUALLY INSPECT ALL CABLE ASSEMBLIES AND CONNECTORS. ENSURE THAT ALL CONNECTORS ARE SECURE. LOOK IN THE AREA...

  • Page 64: Fault Diagnosis Chart (Sheet B - Power Problems)

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 3 SERVICE HANDBOOK Issue c April 2002 Fault Diagnosis REMOVE THE TOP ASSEMBLY . VISUALLY INSPECT ALL CABLE ASSEMBLIES AND CONNECTORS. ENSURE THAT ALL CONNECTORS ARE SECURE. CHECK THE CABLE ASSEMBLY FROM THE POWER SUPPLY TO THE TOP ASSEMBLY.

  • Page 65: Fault Diagnosis Chart (Sheet C - General Problems)

    Chapter 3 SCHILLER AT-10 ECG and Spirometry Unit Fault Diagnosis SERVICE HANDBOOK Issue c April 2002 ENSURE THAT THE PROGRAM PACK IS INSERTED. REMOVE THE TOP ASSEMBLY. VISUALLY INSPECT ALL CABLE ASSEMBLIES AND CONNECTORS. ENSURE THAT ALL CONNECTORS ARE SECURE.

  • Page 66: Fault Diagnosis Chart (Sheet D - Printer Problems)

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 3 SERVICE HANDBOOK Issue c April 2002 Fault Diagnosis CHECK THAT THE CORRECT PRINTER RESISTANCE IS STORED IN MEMORY AND THAT THE PRINT HEAD AMBIENT TEMPERATURE IS CORRECT AS DETAILED IN CHAPTER 5.

  • Page 67: Fault Diagnosis Chart (Sheet E - Auto Mode Problems)

    Chapter 3 SCHILLER AT-10 ECG and Spirometry Unit Fault Diagnosis SERVICE HANDBOOK Issue c April 2002 CHECK ALL PATIENT LEADS. ENSURE THAT ALL CONNECTIONS ARE SECURE. ENTER THE ELECTRODE TEST SCREEN AS DETAILED IN CHAPTER 5. CHECK THE FAULTY LEAD.

  • Page 68: Fault Diagnosis Chart (Sheet F - Exercise Mode Problems)

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 3 SERVICE HANDBOOK Issue c April 2002 Fault Diagnosis CHECK THAT THE CABLE ASSEMBLY TO THE STRESS TEST EQUIPMENT IS CORRECTLY AND FIRMLY CONNECTED. THAT IS: RS CONTROLLED STRESS EQUIPMENT TO RS PORT 2...

  • Page 69: Fault Diagnosis Chart (Sheet G - Spirometry Problems)

    Chapter 3 SCHILLER AT-10 ECG and Spirometry Unit Fault Diagnosis SERVICE HANDBOOK Issue c April 2002 CHECK THE FILTER IN THE FLOW SENSOR. ENSURE THAT IT IS NOT BLOCKED AND THAT IT IS CLEAN. REPLACE IF NECESSARY AS DETAILED IN CHAPTER 5.

  • Page 70: Fault Diagnosis Chart (Sheet H - Communication Problems)

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 3 SERVICE HANDBOOK Issue c April 2002 Fault Diagnosis PRESS <STORAGE> <1> (SETTINGS) <3> (CONFIG OF TRANSMISSION). CHECK THAT ALL SETTINGS( LINE OR MODEM, RECORD OR BLOCK) ARE CORRECT FOR THE APPLICATION. PRESS <STORAGE> <2> (TEST MODE).
  • Page 71 Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Chapter 4 Physical Overview & Module Replacement Contents Introduction Base Assembly Top Assembly Removal and Replacement 4.11 Opening the Case 4.13 Top Assembly Removal 4.13...
  • Page 72 SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Program Pack and Software Modules 4.29 Program Pack (and program EPROM and DSP) Removal 4.30 Program Pack (and program EPROM and DSP) Replacement 4.30...

  • Page 73: Introduction

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Introduction The AT-10 comprises two main assemblies as follows: • The Base Assembly • The Top Assembly The Base Assembly contains most of the AT-10 electronics, and all external connectors. The Top Assembly houses the keyboard and the LCD display.

  • Page 74: Base Assembly

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Base Assembly The base assembly comprises a moulded plastic tray onto which is mounted the following: • Mains Isolation Transformer • Two Lead-Acid Batteries •...
  • Page 75 Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Base Assembly - Top Assembly Removed Page 4.5...
  • Page 76 SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Base Assembly - Paper Carriage extended and Power Supply Board, Interface Board and Battery Removed Page 4.6...
  • Page 77 Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Base Assembly (cont.) The metal paper tray framework allows the paper tray to be withdrawn. The dual rotation paper carriage motor turns a worm drive to slide the paper tray in or out.
  • Page 78 SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement LCD / Keyboard Assembly Page 4.8...

  • Page 79: Top Assembly

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Top Assembly The Top Assembly is manufactured from moulded plastic and comprises a Main Housing with a hinged LCD Assembly. Secured in the Main Housing is the LCD / Keyboard Buffer MK8-4 and the Keyboard MK 8-3. Both of these boards are secured with double sided tape.
  • Page 80 SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement REMOVE TOP ASSEMBLY IN BASE ASSEMBLY ACCESS PAPER TRAY POWER SUPPLY INTERFACE THERMAL BATTERIES ASSEMBLY AND BOARD BOARD PRINTER MOTOR MAINS...

  • Page 81: Removal And Replacement

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Removal and Replacement Introduction This Chapter provides the procedures required to carry out the removal and replacement of all modules that are spared at service level. The instructions given in this chapter are autonomous, with each module containing the following: •...
  • Page 82 SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Safety Notes WARNINGS BEFORE COMMENCING ANY REMOVAL OR REPLACEMENT PROCEDURES ENSURE THAT THE MAINS POWER SUPPLY IS SWITCHED OFF AND THAT THE MAINS CABLE IS REMOVED.

  • Page 83: Opening The Case

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Opening the Case Pre-requisites • The unit must be placed on an anti-static mat and anti-static precautions observed when any maintenance is carried out on the AT-10. The room temperature should be between 18 and 28 degrees.

  • Page 84: Top Assembly Replacement

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Opening the Case (cont.) Top Assembly Replacement To replace the Top Assembly proceed as follows: 1. 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.
  • Page 85 Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Opening the Case (cont.) 8. Press the <PATIENT DATA> key and systematically press the keys: <QWERTZUIOP>, <ENTER>, <1234567890> Ensure that the entered data is presented on the screen as entered. Press <ESC> to exit from the patient data display.
  • Page 86 SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Power Supply Board MK 8-6 Page 4.16...

  • Page 87: Power Supply Board Mk

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Power Supply Board MK 8-6 The Power Supply board is positioned on four spacers above the Processor board. Pre-requisites • The Warnings and Cautions at the beginning of the Chapter must be observed.

  • Page 88: Checking The Power Supplies

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Power Supply Board MK 8-6 (cont.) Check that the battery charge monitor circuit is functioning as follows: 1. Switch the unit off but leave the mains connected. Leave the battery to charge for 10 hours.
  • Page 89 Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Power Supply Board MK 8-6 (cont.) 2. Using a suitable lead, connect GND to Plug P12 pin 25, and hold for 2 seconds. The power supply will now be latched on and all generated power supplies can be checked for the correct voltage.

  • Page 90: Lead-Acid Batteries

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Lead-acid Batteries Two batteries are installed in the AT-10. They are self contained with integral leads and connectors. Pre-requisites • The Warnings and Cautions at the beginning of the Chapter must be observed.

  • Page 91: Battery Replacement

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Lead-acid Batteries (cont.) Battery Replacement To replace the battery position the battery and connect the leads to the battery connector on the Power Supply.

  • Page 92: Interface Board Mk

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Interface Board MK 8-5 Pre-requisites • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed as detailed in Paragraph 2 and all external cable assemblies disconnected.

  • Page 93: Interface Board Removal

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Interface Board MK 8-5 (cont.) Interface Board Removal To remove the Interface Board disconnect all connectors, unscrew the four screws securing the board to the Paper Tray Assembly, and lift the board away from the Paper Tray Assembly.

  • Page 94: Paper Tray Assembly

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Paper Tray Assembly The Paper Tray Assembly comprises a metal framework onto which is mounted the paper tray and motor, the thermal printer and the interface board. It is positioned above the Processor board and is mounted on four spacers.

  • Page 95: Paper Tray Replacement

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Paper Tray Assembly (cont.) Paper Tray Replacement To replace the Paper Tray Assembly proceed as follow: 1. Gently ease the assembly in position on the four spacers above the Processor board.

  • Page 96: Microprocessor Board

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Microprocessor Board Pre-requisites • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed as detailed in Paragraph 2 and all external cable assemblies disconnected.

  • Page 97: Microprocessor Board Removal

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Microprocessor Board (cont.) Microprocessor Board Removal The Microprocessor board is secured to the Base Assembly with screws. To remove the Microproc-...

  • Page 98: Checks And Tests After Microprocessor Board Replacement

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Microprocessor Board (cont.) 3. Slide in, and secure the Program Pack as detailed below 4. Replace the Paper Tray Assembly as detailed above.

  • Page 99: Program Pack And Software Modules

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Program Pack and Software Modules Pre-requisites Tools • Cross-Bladed screwdriver • Special chip removal tool type AMP. Parts • Program Pack with the correct software installed, or the software EEPROM or DSP modules.

  • Page 100: Program Pack (And Program Eprom And Dsp) Removal

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Program Pack and Software Modules (cont.) Program Pack (and program EEPROM and DSP) Removal The Program Pack is mounted in slides secured on the Processor board. Access to the Program Pack is gained from the side panel under the Paper Tray.

  • Page 101: Ecg Amplifier Board

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 ECG Amplifier Board The ECG Amplifier is mounted next to the Processor board and is secured to the Base Assembly with four screws.

  • Page 102: Checks And Tests After Replacement

    To prove the integrity of the replaced board carry out the following functional check procedure: 1. Switch on the unit and connect a Schiller patient cable to the ECG connector. Carry out a cable test by inserting each lead in turn into the lead test point. Ensure that the green test LED lights when a patient lead is inserted.

  • Page 103: Mains Assembly

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Mains Assembly Pre-requisites • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed as detailed in Paragraph 2 and all external cable assemblies disconnected.

  • Page 104: Mains Assembly Replacement

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Mains Assembly (cont.) Mains Assembly Replacement 1. Ensure that the mains voltage selector is set to the correct voltage for the application as indicated by an arrow in the selector and fuse sub-assembly.

  • Page 105: Mains Transformer

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Mains Transformer Pre-requisites • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed as detailed in Paragraph 2 and all external cable assemblies disconnected.

  • Page 106: Lcd / Keyboard Buffer Mk

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement LCD / Keyboard Buffer MK 8-4 The LCD/Keyboard Buffer board is situated in the Top Assembly adjacent to the Keyboard. It is secured in position with three retaining screws.
  • Page 107 Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Page 4.37...

  • Page 108: Lcd/Keyboard Buffer Removal

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement LCD / Keyboard Buffer MK 8-4 (cont.) LCD/Keyboard Buffer Removal To remove the LCD/Keyboard Buffer proceed as follows: 1. Disconnect all connectors from the board.

  • Page 109: Lcd

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 The LCD comprises the LCD screen, a contrast control and an DC/AC Converter PCB (mounted on the LCD/Keyboard Buffer). The LCD is secured in position with double sided tape.

  • Page 110: Lcd Removal

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement LCD (cont.) LCD Removal To remove the LCD proceed as follows: WARNING HIGH VOLTAGES ARE GENERATED IN THE LCD. ENSURE THAT THE MAINS IS DISCONNECTED BEFORE REMOVING THE LCD HOUSING COVER.

  • Page 111: Checks After Lcd Replacement

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 LCD (cont.) 5. Taking care not to touch the plastic screen, position the cover in the LCD bottom hinges and secure with the three retaining screws at the top. Replace the LCD stops in the screw recesses.

  • Page 112: Thermal Printer And Print Head

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Thermal Printer and Print Head Pre-requisites • The Warnings and Cautions at the beginning of the Chapter must be observed. •...
  • Page 113 Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Thermal Printer and Print Head (cont.) 2. Carefully insert the print head retaining rod and secure with the hexagonal print head retaining screw.

  • Page 114: Thermal Printer Replacement

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Thermal Printer and Print Head (cont.) Thermal Printer Replacement The resistance value of the printer is used as an off-set by the printer drive circuit and must be entered via the AT-10 menu structure, prior to operation.

  • Page 115: Keyboard

    Chapter 4 SCHILLER AT-10 ECG and Spirometry Unit Physical Overview & Module Replacement SERVICE HANDBOOK Issue c April 2002 Keyboard Pre-requisites • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed as detailed in Paragraph 3 and all external cable assemblies disconnected.

  • Page 116: Keyboard Replacement

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 4 SERVICE HANDBOOK Issue c April 2002 Physical Overview & Module Replacement Keyboard (cont.) Keyboard Replacement The Keyboard comes complete with double sided adhesive tape for fixing the board in position. To replace a keyboard proceed as follows: 1.
  • Page 117 Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Chapter 5 Functional Checks & Adjustments Contents Check and Adjustment Procedures General Confidence Check Power Supply Printer Printer Resistance Printer Head Alignment...

  • Page 118: Check And Adjustment Procedures

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments Check and Adjustment Procedures General Confidence Check The procedure detailed here is a general confidence check in the unit after an internal module or board has been replaced.

  • Page 119: Power Supply

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Check and Adjustment Procedures (cont.) Power Supply 1. Connect mains to the unit and switch on. Ensure that the mains LED lights and the Battery LED lights.
  • Page 120 SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments Check and Adjustment Procedures (cont.) Page 5.4...
  • Page 121 Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Check and Adjustment Procedures (cont.) WARNING LETHAL VOLTAGES ARE PRESENT WHEN CHECKING AND ADJUSTING THE POWER SUPPLY. DO NOT LET CONCENTRATION LAPSE. EXERCISE GREAT CARE WHEN TAKING MEASUREMENTS.

  • Page 122: Printer

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments Printer To check the printer and to ensure that every pixel is operational, a built-in printer test is provided. To carry out the printer check enter the following key sequence: <ECG>...

  • Page 123: Printer Head Alignment

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Printer (cont.) Printer Head Alignment Printer alignment is achieved with the three print head alignment (tensioning) screws. Adjust the screws so that they are slightly indented below the frame.

  • Page 124: Rs Interface Testing

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments RS Interface Testing RS Interface Error messages The following error messages are associated with the RS Interface. If any of these error messages are displayed, carry out the checks suggested.

  • Page 125: Rs Self Test

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 RS Interface Testing (cont.) RS Self Test The RS interface self test ensures that the RS communication circuit on the Processor board is functioning.
  • Page 126 SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments RS Interface Testing (cont.) RS Test Cable ART. No. 2. 310 042 RS 232 Pin Connections SIGNAL Out ( Data Output) In ( Input Data)

  • Page 127: Rs -232 Transmission/Reception Test

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 RS -232 Transmission/Reception Test Test Input / Output The test transmission / test reception options enables a test sequence to be generated and received.
  • Page 128 SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments RS-232 Transmission/Reception Test (cont.) 3. Set the direct connection to the proper COM-port and click OK. 4. Enter the port settings 19200, 8, N, 1, Hardware and confirm with OK..

  • Page 129: Test Output

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 RS-232 Transmission/Reception Test (cont.) 8. Check the boxes for "Send line ends with line feeds", "Echo typed characters locally" and "Wrap lines that exceed terminal width". Confirm with OK. Click once more on OK to get back to the open Hyperterminal window.

  • Page 130: Test Input

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments RS-232 Transmission/Reception Test (cont.) Test Input • In the RS-232 test window, press the key <6> ´Test input on channel n´. The upper part of the RS-232 test window is erased to be able to display incoming messages.

  • Page 131: Interface Board Adjustments

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Interface Board Adjustments One adjustment is possible on the Interface board - Paper Mark (VR1). This pre-set is used to adjust the paper mark detection circuit threshold so that the paper mark is recognised. The paper mark is used for calculation of print-out commencement position, paper detection, paper present etc.

  • Page 132: Self Test Screens / Electrode Test Screen

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments Self Test Screens / Electrode Test Screen There are three test screens built into the AT-10 for use by the service engineer. The first screen provides test information of the patient cable and electrode application.

  • Page 133: Self Test Screen

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Self Test Screen To enter the self test screen proceed as follows: 1. When in the Electrode test screen, press <ENTER>. The following display will be shown:...
  • Page 134 SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments Self Test Screen (cont.) The patient must be connected to obtain a meaningful measurement. The range of the measurement is between 0 and 255. A high reading means that common mode noise is present and it may be necessary to move the unit to a less noisy environment.

  • Page 135: Offset Screen

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Offset Screen This screen gives the value (and setting facility) for the thermal print head resistance and the value and setting option of various analog offsets for analog controlled stress test devices. A DVM is required to carry out the analog offset settings.
  • Page 136 SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments Offset Screen (cont.) 2. Adjust IN4OFFS using the left and right cursor, until a reading of 1000 (mV) ±5 is obtained at AIN4.

  • Page 137: Software And Options

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Software and Options To check the software version of the unit and to display all the systems options that have been installed, proceed as follows: Display the software option screen by pressing the key sequence: <ECG>...
  • Page 138 To incorporate any of these software options the code must be entered, the option selected with the <+> and <-> keys and the <ENTER> key pressed. The code can be purchased from Schiller AG through your local dealer. Late potentials...

  • Page 139: Replacing The Flow Sensor Filter

    Chapter 5 SCHILLER AT-10 ECG and Spirometry Unit Functional Checks & Adjustments SERVICE HANDBOOK Issue c April 2002 Replacing the Flow Sensor Filter Spirometer SP-20 / SP-110 / SP-150 The filter is the only serviceable item on the flow meter. To replace the filter proceed as follows: 1.
  • Page 140 SCHILLER AT-10 ECG and Spirometry Unit Chapter 5 SERVICE HANDBOOK Issue c April 2002 Functional Checks & Adjustments Replacing the Flow Sensor Filter (cont.) 7. Insert a new filter into the inner tube so that it sits on the inner lip of the half with the red location mark.
  • Page 141 Chapter 6 SCHILLER AT-10 ECG and Spirometry Unit Spare Parts SERVICE HANDBOOK Issue c April 2002 Chapter 6 Spare Parts Contents Introduction Module Identification AT-10 Spare Modules Disposables Accessories Dedicated Test Equipment and special Tools Page 6.1...

  • Page 142: Introduction

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 6 SERVICE HANDBOOK Issue c April 2002 Spare Parts Introduction This Chapter gives the part numbers for modules that can be replaced by the service engineer. The part numbers for disposables, accessories and dedicated test equipment are also included.

  • Page 143: Module Identification

    Chapter 6 SCHILLER AT-10 ECG and Spirometry Unit Spare Parts SERVICE HANDBOOK Issue c April 2002 Module Identification Every module has a unique part number. The number is either stencilled on the module or printed on an attached label. The module numbers are arranged as follows: When ordering a module, only the article number has to be stated (without the modification index).
  • Page 144 SCHILLER AT-10 ECG and Spirometry Unit Chapter 6 SERVICE HANDBOOK Issue c April 2002 Spare Parts The Component Layout is D.2180Ga. The categories are as follows: IDENTIFICATION DOCUMENT LETTER CIRCUIT DIAGRAM BLOCK DIAGRAM COMPONENT LAYOUT TEST DOCUMENTATION ASSEMBLY DOCUMENTATION Note that the Test Documentation and Assembly Documentation is usually available for internal use only.

  • Page 145: At-10 Spare Modules

    Chapter 6 SCHILLER AT-10 ECG and Spirometry Unit Spare Parts SERVICE HANDBOOK Issue c April 2002 AT-10 Spare Modules DESCRIPTION NUMBER KEYBOARD MK 8-3 ENGLISH 3. 2233FA KEYBOARD MK 8-3 GERMAN 3. 2232FA KEYBOARD MK 8-3 FRENCH 3. 2234FA KEYBOARD MK 8-3 ITALIAN 3.

  • Page 146: Disposables

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 6 SERVICE HANDBOOK Issue c April 2002 Spare Parts Disposables PART DESCRIPTION NUMBER PRINTER PAPER 2. 157 012 DISPOSABLE CARDBOARD MOUTHPIECES 2. 100 024 (FOR PNEUMOTACHO SENSOR SP-100) ELECTRODE GEL 100 mL 2. 158 005...

  • Page 147: Accessories

    Chapter 6 SCHILLER AT-10 ECG and Spirometry Unit Spare Parts SERVICE HANDBOOK Issue c April 2002 Accessories PART DESCRIPTION NUMBER GROUND CABLE 2. 310005 POWER CABLE 2. 300005 ELECTRODE SET COMPRISING FOUR EXTREMITY STAINLESS STEEL ELECTRODES 2. 000041 WITH RUBBER STRAPS. SIX PRECORDIAL...

  • Page 148: Dedicated Test Equipment And Special Tools

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 6 SERVICE HANDBOOK Issue c April 2002 Spare Parts Dedicated Test Equipment and special Tools Page 6.8...
  • Page 149 Chapter 7 SCHILLER AT-10 ECG and Spirometry Unit Technical Data SERVICE HANDBOOK Issue c April 2002 Chapter 7 Technical Data Contents General Technical Data Connectors ERGO Connector Data I/O Connector Video Connector Experimental Input Connectors DC1, DC2 RS-232 (V24) Serial Interface (Interface numbers 1, 2 and 3)

  • Page 150: General Technical Data

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 7 SERVICE HANDBOOK Issue c April 2002 Technical Data General Technical Data Dimensions (l/w/h): 320 x 264 x 74 mm Weight: approx. 4.7 kg Power supply requirements: 110 / 130 / 220 / 240Vac, 50 / 60Hz...
  • Page 151 Chapter 7 SCHILLER AT-10 ECG and Spirometry Unit Technical Data SERVICE HANDBOOK Issue c April 2002 General Technical Data (cont.) Data record: Listing of ECG recording data, date and time of recording, patient data, etc. Versions M and C: ECG measurement results (intervals,...

  • Page 152: Connectors

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 7 SERVICE HANDBOOK Issue c April 2002 Technical Data Connectors ERGO Connector Input impedance: > 100 kOhm Pin Connections Pin 1 RPM Input: 100 RPM/V Pin 2 Pin 4 Load input: 100 W/V...

  • Page 153: Video Connector

    Chapter 7 SCHILLER AT-10 ECG and Spirometry Unit Technical Data SERVICE HANDBOOK Issue c April 2002 Connectors (cont.) Video Connector Type: D sub, 15 pole, High-density, female: Resolution: 640 x 480 dots Input signals: horizontal sync.: TTL (positive) vertical sync.:...

  • Page 154: Rs-422 Serial Interface

    SCHILLER AT-10 ECG and Spirometry Unit Chapter 7 SERVICE HANDBOOK Issue c April 2002 Technical Data Connectors (cont.) Pin Connections: Channel 1, 2, 3: Pin 3 TXD1 0 (output data) Pin 2 RXD1 I (input data) Pin 7 RTS1 0...

  • Page 155: Pulmonary Function

    Chapter 7 SCHILLER AT-10 ECG and Spirometry Unit Technical Data SERVICE HANDBOOK Issue c April 2002 Pulmonary Function SP-110 Method of Measurement: pneumotachometer Measurement Ranges: Flow: 0 to ± 14 l/s; Volume: 0 to ± 11 litres Measurement Accuracy: ± 2% Flow Impedance: less than 0.5 mbar * s/l at 10 l/s...
  • Page 156 SCHILLER AT-10 ECG and Spirometry Unit Chapter 7 SERVICE HANDBOOK Issue c April 2002 Technical Data Page 7.8...
  • Page 157 Chapter 8 SCHILLER AT-10 ECG and Spirometry Unit Glossary SERVICE HANDBOOK Issue c April 2002 Chapter 8 Glossary Contents Introduction Acronyms Page 8.1...
  • Page 158 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-10. Only abbreviations that are specific to SCHILLER equipment are included here. General electrical and electronic abbreviations are not included.
  • Page 159 Chapter 8 SCHILLER AT-10 ECG and Spirometry Unit Glossary SERVICE HANDBOOK Issue c April 2002 Acronyms ..OS Offset signal (on the ECG amplifier) A(1..n) CPU Address Bus. ALBEEP Alarm beeper signal to the audio amplifier. The frequency of this signal is about 1000 Hz.
  • Page 160 Chapter 8 SCHILLER AT-10 ECG and Spirometry Unit Glossary SERVICE HANDBOOK Issue c April 2002 Acronyms DSP.. Digital signal processor (on program pack). DTACK Transfer data acknowledge. Bus signal to acknowledge transfer of data. Outgoing serial data, turns modem on.
  • Page 161 Motor On - Printer motor enable signal. NWTZ Mains supply. Non-maskable interrupt - interrupt for U47 (Schiller gate array) 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).
  • Page 162 Chapter 8 SCHILLER AT-10 ECG and Spirometry Unit Glossary SERVICE HANDBOOK Issue c April 2002 Acronyms RESLCD/ Resets / darkens the LCD. RES/P Error reset signal to inactivate the LCD. Ready to send - ougoing serial data, handshake with CTS.
  • Page 163 Upper column address strobe (for dynamic RAM). UD1, UD2 Upper data strobe - used for generating UOE and UWE. 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.
  • Page 164 Chapter 8 SCHILLER AT-10 ECG and Spirometry Unit Glossary SERVICE HANDBOOK Issue c April 2002 Page 8.8...

Table of Contents