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Schiller AT-2 Service Handbook

6-channel ecg unit
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SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
Cardio Menu
Operator Manual
AT-2
6-Channel
ECG unit
Service Handbook
SCHILLER AG
Altgasse 68
CH-6340 Baar, Switzerland
Phone: + 41 41 766 42 42
Fax: + 41 41 761 08 80
Home page: http://www.schiller-ag.ch/
June 1998
Article Number: 2.540 010
i

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  • Page 1 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 Cardio Menu Operator Manual AT-2 6-Channel ECG unit Service Handbook SCHILLER AG Altgasse 68 CH-6340 Baar, Switzerland Phone: + 41 41 766 42 42 Fax: + 41 41 761 08 80 Home page: http://www.schiller-ag.ch/...
  • Page 2 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 AT-2 Service Handbook Article Number 2. 540 010 Associated Documents...
  • Page 3 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 DECLARATION OF CONFORMITY Diagnostic System: Cardiovit AT-2 Serial numbers starting with: 040. Year of manufacture: 1997 Onwards We, the undersigned, hereby declare that the medical device (class IIa) specified above conforms with the essential requirement listed in Annex 1 of EC Directive 93/42/EEC.
  • Page 4 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 Where to Obtain Service America WELCH ALLYN SCHILLER Inc. Asia Pacific SCHILLER Asia Pacific Austria SCHILLER Handelsgesellschaft GmbH Medizintechnik France SCHILLER France S.A Germany SCHILLER Medizintechnik GmbH (EU-Bevollmächtiger) Hotline: India Schiller Healthcare India Pvt.
  • Page 5 Trademarks Copyright Notice © Copyright 1998 by SCHILLER AG. All rights reserved. You may not reproduce, transmit, transcribe, store in a retrieval system or translate into any language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or otherwise, any part of this publication without express written permission of SCHILLER AG.
  • Page 6 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 Safety Notices...
  • Page 7 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 Safety Notices...
  • Page 8 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 What's in this book Chapter 1 - Operating Elements Chapter 2 - Functional Overview Chapter 3 - Fault Diagnosis Chapter 4 - Module Removal and Replacement Chapter 5 - Adjustments...
  • Page 9 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 What's in this book Chapter 7 - Technical Data Chapter 8 - Glossary Index Circuit Diagrams & Board layouts General Symbols We need your help...
  • Page 10 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998...

  • Page 11: Table Of Contents

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Chapter 1 Operating Elements Contents Introduction Location & Power The Keyboard AT-2 Short Form Operating Instructions Modes of Operation Automatic Mode Manual Mode Settings 1.10 Automatic Mode (ECG) Settings 1.18...

  • Page 12: Introduction

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Introduction Page 1.2...

  • Page 13: Location & Power

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Location & Power Location Power Supply Switching On and Off The unit is automatically switched off after 5 minutes (30 seconds if battery capacity is limited) if no key is pressed and the patient cable is not connected.

  • Page 14: The Keyboard

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements The Keyboard Page 1.4...

  • Page 15: At-2 Short Form Operating Instructions

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements AT-2 Short Form Operating Instructions Automatic ECG Recording • • • • Manual ECG Recording (Rhythm Strip) • • • • • Electrode hook-up check •...

  • Page 16: Modes Of Operation

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Modes of Operation Automatic Mode Page 1.6...
  • Page 17 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Modes of Operation (cont.) Manual Mode Page 1.7...

  • Page 18: Automatic Mode

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Automatic Mode automatic mode To start the automatic ECG recording in Format 1, press the AUTO key: To start the automatic recording in the second format, press the ALT key followed by the...

  • Page 19: Manual Mode

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Manual Mode Manual mode To start the manual recording of a real-time ECG, press the MANUAL Printout key To stop the manual recording (printout) press the STOP key...

  • Page 20: Settings

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Settings STOP Note: The Alternative (ALT) function is only active for 4 seconds. If a programming key is not pressed within 4 seconds, the unit reverts to standard mode. The ALT key must...
  • Page 21 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Settings (cont.) ALT - 0 - 1 - 1 Unit designation Serial number Leads ECG Format MECG Measurements Marks nterpretation Selected Rhythm leads Automatic Centering...
  • Page 22 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Settings (cont.) Default Settings ALT - 0 - 6 - 6 Page 1.12...
  • Page 23 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Settings (cont.) Language STOP Notes: The difference between English and American is the mains filter setting - English = 50Hz; American = 60Hz and the physical units.
  • Page 24 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Settings (cont.) Filters Baseline Filter Baseline filter STOP Note: The set value is the lower limit of the frequency range and is normally set to 0.05 Hz.
  • Page 25 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Settings (cont.) Myogram Filter Myogram filter FILTER STOP STOP FILTER KEY Note: An ECG recorded in auto mode is stored unfiltered. It is therefore possible to print the stored ECG either with or without passing the myogram filter.
  • Page 26 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Settings (cont.) Defining Lead Sequence & Printout STOP Simultaneous Sequential Auto-Centering ON Auto-Centering OFF Page 1.16...
  • Page 27 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Settings (cont.) Acoustic QRS Indication Time / Date Note: If the battery has been disconnected more than half an hour, the clock oscillator must be restarted before setting the time. To do this the following ke sequence must be...

  • Page 28: Automatic Mode (Ecg) Settings

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Automatic Mode (ECG) Settings ALT - 1 ALT - 2 Average Cycles Note: Lead selection for the rhythm lead(s) are defined on page 21 Page 1.18...
  • Page 29 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Automatic Mode (ECG) Settings (cont.) Measurements and Markings (C version only) Page 1.19...
  • Page 30 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Automatic Mode (ECG) Settings (cont.) Interpretation (C version only) STOP Full details of the interpretation option are given in the SCHILLER ECG Measurement and Interpretation booklet (art. No. 2.510 179). Interpretation Settings (C version only) Page 1.20...
  • Page 31 SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Automatic Mode (ECG) Settings (cont.) Selecting Rhythm Leads STOP Page 1.21...

  • Page 32: Care & Maintenance

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Care & Maintenance 12 Monthly Check Cleaning the Casing CAUTION SWITCH THE UNIT OFF BEFORE CLEANING AND DISCONNECT THE MAINS. DO NOT, UNDER ANY CIRCUMSTANCES, IMMERSE THE APPARATUS INTO A CLEANING LIQUID OR STERILIZE WITH HOT WATER, STEAM, OR AIR.

  • Page 33: Replacing The Recording Paper

    @Q`UbdbQiS_fUb @Q`Ubb_\\Ub bU\UQcURQb @Q`Ub WbYTcYTUe` • Press the STOP key to transport the paper to the start position. SCHILLER can only guarantee perfect printouts when SCHILLER original chart paper or chart paper of the same quality is used. Page 1.23...

  • Page 34: Thermal Paper Handling

    SCHILLER AT-2 6-Channel ECG Unit Chapter 1 SERVICE HANDBOOK Issue 2.1 November 1998 Operating Elements Thermal Paper Handling Page 1.24...
  • Page 35 SCHILLER AT-2 6-Channel ECG Unit Chapter 2 SERVICE HANDBOOK Issue 2.1 November 1998 Functional Overview Chapter 2 Functional Overview Contents Introduction Main Board MK 12-1 Power Supply CPU and processing circuits Memory Thermal Print Head Controller Printer Timing Paper Mark...
  • Page 36 SERVICE HANDBOOK Issue 2.1 November 1998 Introduction This chapter provides a functional overview of the AT-2 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...
  • Page 37 12 V Mains Battery P3 (part) TP 12 & TP 13 MAIN BOARD MK 12-1 Voltage sense Voltage +5V ref +Batt ON / OFF regulator control Mains Voltage Battery charger & Rectification +5.2V con- regulator voltage regulator nector Switching OFF from CPU +24V voltage reg.
  • Page 38 9.4 V. CPU and processing circuits Overall control and coordination of the AT-2 is by 68331 CPU working in conjunction with a custom specific gate array IC which perform all timing and control functions.
  • Page 39 SCHILLER AT-2 6-Channel ECG Unit Chapter 2 SERVICE HANDBOOK Issue 2.1 November 1998 Functional Overview Main Board MK 12-1 (cont.) Paper Mark The pulsed paper mark signal from the printer is fed to a comparator. A detected papermark supresses any (logic 0) pulses of PMARK at the output of comparator U42.
  • Page 40 Chapter 2 SCHILLER AT-2 6-Channel ECG Unit Functional Overview SERVICE HANDBOOK Issue 2.1 November 1998 Page 2.6...
  • Page 41 SCHILLER AT-2 6-Channel ECG Unit Chapter 3 SERVICE HANDBOOK Issue 2.1 November 1998 Fault Diagnosis Chapter 3 Fault Diagnosis Contents Introduction Fault Diagnosis Chart General Check Procedures Printer Check Print Head Alignment and Print Head Tension Page 3.1...
  • Page 42 SERVICE HANDBOOK Issue 2.1 November 1998 Introduction The AT-2 is designed to be simple to use and simple to service: the service philosophy of the AT- 2 is module replacement and not 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.
  • Page 43 SCHILLER AT-2 6-Channel ECG Unit Chapter 3 SERVICE HANDBOOK Issue 2.1 November 1998 Fault Diagnosis Fault Diagnosis Chart Page 3.3...
  • Page 44 (general settings, comprehensive menu guides etc.) please refer to Chapter 1 in this publication or the relevant User Manual. To carry out the general AT-2 functional check procedure, proceed as follows: 1. Connect mains power to the unit and ensure that the green mains LED lights.
  • Page 45 SCHILLER AT-2 6-Channel ECG Unit Chapter 3 SERVICE HANDBOOK Issue 2.1 November 1998 Fault Diagnosis Printer Check 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 press: ALT - MAN START A test printout is given.
  • Page 46 Chapter 3 SCHILLER AT-2 6-Channel ECG Unit Fault Diagnosis SERVICE HANDBOOK Issue 2.1 November 1998 Page 3.6...
  • Page 47 SCHILLER AT-2 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 2.1 November 1998 Module Removal and Replacement Chapter 4 Module Removal and Replacement Contents Introduction Warnings and Cautions Physical Overview Exploded View Base Assembly and Printer Exploded View Paper Feed...
  • Page 48 Chapter 4 SCHILLER AT-2 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 2.1 November 1998 Remove top assembly In Base assembly access to : Mains trans- Paper tray Board Battery former and assembly MK 12-1 pack connector and motor...

  • Page 49: Introduction

    SCHILLER AT-2 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 2.1 November 1998 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: •...

  • Page 50: Warnings And Cautions

    1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 THE AT-2 CONTAINS STATIC SENSITIVE CMOS COMPONENTS; OBSERVE...

  • Page 51: Physical Overview

    Module Removal and Replacement Physical Overview The AT-2 unit is enclosed in a two part, medical standard, moulded plastic case. The top part contains the keyboard with the base section containing all the electronics of the unit, the thermal printer, the paper tray, the battery and mains transformer.

  • Page 52: Exploded View Base Assembly And Printer

    Chapter 4 SCHILLER AT-2 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 2.1 November 1998 Exploded View Base Assembly and Printer Page 4.6...

  • Page 53: Exploded View Paper Feed

    SCHILLER AT-2 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 2.1 November 1998 Module Removal and Replacement Exploded View Paper Feed Page 4.7...

  • Page 54: Opening The Case

    Prerequisites • The unit must be placed on an antistatic mat and antistatic precautions observed when any maintenance is carried out on the AT-2. The room temperature should be between 18 and 28 degrees. • THE WARNINGS AND CAUTIONS AT THE BEGINNING OF THE CHAPTER MUST BE OBSERVED.

  • Page 55: Top Assembly Replacement

    SCHILLER AT-2 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 2.1 November 1998 Module Removal and Replacement 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 56: Printer Tray Assembly And Thermal Printer

    Chapter 4 SCHILLER AT-2 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 2.1 November 1998 Printer Tray Assembly and Thermal Printer Prerequisite • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed as detailed previously. All external cable assemblies must be disconnected.

  • Page 57: Thermal Printer Replacement

    SCHILLER AT-2 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 2.1 November 1998 Module Removal and Replacement Printer Tray Assembly and Thermal Printer 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;...

  • Page 58: Main Board Mk

    Chapter 4 SCHILLER AT-2 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 2.1 November 1998 Main Board MK 12-1 Prerequisite • The Warnings and Cautions at the beginning of the chapter must be observed. • The top assembly must be removed and all external cable assemblies disconnected.

  • Page 59: Battery Pack

    SCHILLER AT-2 6-Channel ECG Unit Chapter 4 SERVICE HANDBOOK Issue 2.1 November 1998 Module Removal and Replacement Battery Pack Prerequisite • The Warnings and Cautions at the beginning of the Chapter must be observed. • The Top Assembly must be removed and all external cable assemblies disconnected.

  • Page 60: Keyboard

    Chapter 4 SCHILLER AT-2 6-Channel ECG Unit Module Removal and Replacement SERVICE HANDBOOK Issue 2.1 November 1998 Keyboard The keyboard comes as a complete assembly with the top casing. The part number of the keyboard is given in Chapter 6.
  • Page 61 SCHILLER AT-2 6-Channel ECG Unit Chapter 5 SERVICE HANDBOOK Issue 2.1 November 1998 Adjustments Chapter 5 Adjustments Contents Introduction Warnings, Cautions and Conditions Test Equipment Main Board MK 12-1 Adjustment Locations Battery Charge Voltage Paper mark Detector Check ECG Amplifier +2V, -2V and PWM Ramp Time Adjustment...

  • Page 62: Introduction

    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-2 has the following adjustments: • Battery Charge Voltage (VR1 on the main board MK 12-1) •...

  • Page 63: Warnings, Cautions And Conditions

    1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 THE OUTER SURFACES OF THE AT-2 ARE SUSCEPTIBLE TO ABRASION DAMAGE.

  • Page 64: Test Equipment

    ECG Emulator, 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) Page 5.4...

  • Page 65: Main Board Mk 12-1 Adjustment Locations

    SCHILLER AT-2 6-Channel ECG Unit Chapter 5 SERVICE HANDBOOK Issue 2.1 November 1998 Adjustments Main Board MK 12-1 Adjustment Locations 1 2 3 4 5 6 7 8 9 0 Battery charge 1 2 3 4 5 6 7 8 9 0...

  • Page 66: Battery Charge Voltage

    Battery Charge Voltage Precautions and Requirements The unit must be placed on an antistatic mat and antistatic precautions observed when any maintenance is carried out on the AT-2. The room temperature should be between 18 and 28 degrees. Tools and Equipment •...

  • Page 67: Paper Mark Detector Check

    SCHILLER AT-2 6-Channel ECG Unit Chapter 5 SERVICE HANDBOOK Issue 2.1 November 1998 Adjustments Paper mark Detector Check Tools, Equipment and Material • Oscilloscope • Small flat bladed screwdriver • 70% alcohol solution and clean lint free cloth Procedure To adjust the paper-mark Schmitt trigger sensitivity proceed as follows: •...

  • Page 68: Ecg Amplifier +2V, -2V And Pwm Ramp Time Adjustment

    • DISCONNECT THE MAINS SUPPLY CAUTIONS THE AT-2 CONTAINS STATIC SENSITIVE CMOS COMPONENTS; OBSERVE ANTISTATIC PRECAUTIONS . PLACE THE UNIT ON AN EARTHED ANTISTATIC MAT. PERSONNEL MUST BE EARTHED WHEN HANDLING THE UNIT. EXERCISE CARE WHEN REMOVING AND REPLACING CONNECTORS. NEVER USE FORCE.

  • Page 69: Service Printout

    SCHILLER AT-2 6-Channel ECG Unit Chapter 5 SERVICE HANDBOOK Issue 2.1 November 1998 Adjustments Service Printout The service printout 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.
  • Page 70 Chapter 5 SCHILLER AT-2 6-Channel ECG Unit Adjustments SERVICE HANDBOOK Issue 2.1 November 1998 Service Printout (cont.) 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.

  • Page 71: Software Options / Updates

    ALT- 0 - 1 - any number 0...9 Details of all settings are given in Chapter 1 of this book or in the AT-2 User Guide. Installing Software Options To upgrade the AT-2 from standard to C version type the following: ALT - 0 - 4 - upgrade code (obtainable from SCHILLER) Acceptance of the code is indicated by a series of beeps.
  • Page 72 Chapter 5 SCHILLER AT-2 6-Channel ECG Unit Adjustments SERVICE HANDBOOK Issue 2.1 November 1998 Page 5.12...
  • Page 73 SCHILLER AT-2 6-Channel ECG Unit Chapter 6 SERVICE HANDBOOK Issue 2.1 November 1998 Spare Parts Chapter 6 Spare Parts Contents Spare Parts Page 6.1...
  • Page 74 Your local representative stocks all the disposables and accessories available for the AT-2. In case of difficulty or to obtain the address of your local dealer, please contact the head office. Our staff will be pleased to help process your order or to provide any details for all SCHILLER products.
  • Page 75 SCHILLER AT-2 6-Channel ECG Unit Chapter 6 SERVICE HANDBOOK Issue 2.1 November 1998 Spare Parts Spare Parts Page 6.3...
  • Page 76 Chapter 6 SCHILLER AT-2 6-Channel ECG Unit Spare Parts SERVICE HANDBOOK Issue 2.1 November 1998 Page 6.4...
  • Page 77 SCHILLER AT-2 6-Channel ECG Unit Chapter 7 SERVICE HANDBOOK Issue 2.1 November 1998 Technical Data Chapter 7 Technical Data Contents Technical Data Available Configurations Page 7.1...
  • Page 78 Chapter 7 SCHILLER AT-2 6-Channel ECG Unit Technical Data SERVICE HANDBOOK Issue 2.1 November 1998 Technical Data Dimensions: Weight: Mains Supply: Battery: Battery Capacity: Power Consumption: Leads: Paper Speed: Sensitivity: Chart Paper: Printing Process: Recording Tracks: Automatic Lead Programs: Data Record:...
  • Page 79 SCHILLER AT-2 6-Channel ECG Unit Chapter 7 SERVICE HANDBOOK Issue 2.1 November 1998 Technical Data Technical Data (cont.) Myogram Filter (muscle tremor filter): Line Frequency Filter: Patient Input: Patient Leakage Current: Safety Standard: EMC: Safety Class: Environmental Conditions: Control Panel:...
  • Page 80 Chapter 7 SCHILLER AT-2 6-Channel ECG Unit Technical Data SERVICE HANDBOOK Issue 2.1 November 1998 Page 7.4...
  • Page 81 SCHILLER AT-2 6-Channel ECG Unit Chapter 8 SERVICE HANDBOOK Issue 2.1 November 1998 Glossary Chapter 8 Glossary Contents Introduction Acronyms Page 8.1...
  • Page 82 Chapter 8 SCHILLER AT-2 6-Channel ECG Unit Glossary SERVICE HANDBOOK Issue 2.1 November 1998 Introduction Page 8.2...
  • Page 83 SCHILLER AT-2 6-Channel ECG Unit Chapter 8 SERVICE HANDBOOK Issue 2.1 November 1998 Glossary Acronyms Page 8.3...
  • Page 84 Chapter 8 SCHILLER AT-2 6-Channel ECG Unit Glossary SERVICE HANDBOOK Issue 2.1 November 1998 Acronyms Page 8.4...
  • Page 85 SCHILLER AT-2 6-Channel ECG Unit Chapter 8 SERVICE HANDBOOK Issue 2.1 November 1998 Glossary Acronyms Page 8.5...
  • Page 86 Chapter 8 SCHILLER AT-2 6-Channel ECG Unit Glossary SERVICE HANDBOOK Issue 2.1 November 1998 Acronyms Page 8.6...
  • Page 87 SCHILLER AT-2 6-Channel ECG Unit Chapter 8 SERVICE HANDBOOK Issue 2.1 November 1998 Glossary Acronyms Page 8.7...
  • Page 88 Chapter 8 SCHILLER AT-2 6-Channel ECG Unit Glossary SERVICE HANDBOOK Issue 2.1 November 1998 Page 8.8...
  • Page 89 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 Index Index Page 1...
  • Page 90 SCHILLER AT-2 6-Channel ECG Unit Index SERVICE HANDBOOK Issue 2.1 November 1998 Index Symbols +2V, -2V and PWM Ramp Time Adjustment 5.8 Article Numbers 6.3 Automatic Mode 1.8 Battery Charge Voltage 5.6 Battery Pack 4.13 Board Removal MK 12-1 4.12 Board Replacement MK 12-1 4.12...
  • Page 91 SCHILLER AT-2 6-Channel ECG Unit SERVICE HANDBOOK Issue 2.1 November 1998 Index Index Noise Damping 2.5 Opening the Case 4.8 Ordering Information 6.2 Paper Handling 1.23 Paper Mark 2.5 Paper Mark Detector Adjustment 5.7 Paper Tray 4.11 Patient Cable Resistance 5.10 Physical Overview 4.5...
  • Page 92 SCHILLER AT-2 6-Channel ECG Unit Index SERVICE HANDBOOK Issue 2.1 November 1998 Page 4...
  • Page 93 2*1B C248 SHEET 2 C249 200mAT/230V 150N/1206 150N/1206 PACEMAKER DETECTION 315mAT/115V Akku CAVE CAVE Cave PMPON EBI12 PMPON Schiller AG SHEET 15 MICROPROCESSOR MK12-1 (AT-2) 2391FA ISOLATED Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 94 100N BC847 VR100K 100K 74HC14 TSC426 LM358 74HC14 +U = 25VDC, +UD: 0,6A Last f = 100kHz Schiller AG MAINS INP. / BATT. CHARGER MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 95 C163 BEI U-BATT = 10,3V (DRUCKER AKTIV) = 11.3V (STANDBY) R223 R229 100K TP61 R227 R230 MON/ BC847 R228 Schiller AG ON/OFF & BACKUP MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.09.99 Sheet Drawn by: STR...
  • Page 96 TSC426 +5VREF C130 +Us=10V, LP2951A 1U/16V U28A +5,2V: 1A Last f = 90kHz 74HC14 U28C U28B U28F Schiller AG +5.2V/+24V SWITCHER MK12-1 (AT-2) 2391FA Altgasse 68 74HC14 74HC14 74HC14 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 97 CAVE TPHT 220P TP80 15*2D TP84 CAVE R252 R253 STRB1 100R 100R R269 STRB2 C197 Schiller AG 220P TP81 TP / KEYBOARD CONTROLLER MK12-1 (AT-2) 2391FA CAVE Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 98 25mm/s : 95mVDC TP71 TEST TP70 RESIN/ IRQ/ RES/ SENSE RES/ A/ D R317 CSRTCC/ C228 C222 R/W/ 390P Schiller AG 7705B C221 MICROPROCESSOR/DECODER MK12-1 (AT-2) 2391FA 1U/16V Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 99 R384 1M CT= 0 < T 74HC14 R383 470R 74VHC393 24MHZ 74VHC574 C219 C220 U63A CTRDI V16 OVERFL CT= 0 < 74VHC393 Schiller AG 12-BIT-ZAEHLER MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 100 R335 NB/R0805 27C1024F R334 NB/R0805 U41C U15F FIFOTPD & NB/74HC02 NB/74HC14 N.C. U15B PROM/ PROM/ NB/74HC14 PGM/ U15C CSFIFO/ FRES/ NB/74HC14 Schiller AG RAM/EPROM MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 101 C3OS 680P EBI10 C5OS EBI9 C4OS BC857 CAVEi CAVE ISOLATION EBI8 C6OS TP21 14551 +2Vi DGNDi -10Vi -5VDi -2Vi Schiller AG ECG Part B MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 102 VR5K 1U/X7R TP76 TL062 RL(N) R283 220K LPC662 100N 1U/16V RV12 680P CAVEi CAVEi AGNDi AGNDi DGNDi DGNDi DGNDi Schiller AG EKG Part C MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 103 R133 150N/1206 SST204 160R 150N/1206 CAVEi CAVEi AGNDi R139 AGNDi AGNDi AGNDi AGNDi AGNDi R145 R147 3K9/0.1% 39K/0.1% Schiller AG ECG CHANNEL C1+ C2 MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 104 150N/1206 160R 150N/1206 C110 CAVEi CAVEi AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi R168 R175 R177 3K9/0.1% 39K/0.1% Schiller AG ECG CHANNEL C3 + C4 MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 105 150N/1206 160R 150N/1206 C120 CAVEi CAVEi AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi R299 R311 R318 3K9/0.1% 39K/0.1% Schiller AG ECG CHANNEL C5 + C6 MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 106 150N/1206 160R 150N/1206 C135 CAVEi CAVEi AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi R369 R371 R363 3K9/0.1% 39K/0.1% Schiller AG ECG CHANNEL LA + RA MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 107 TL084 TL084 TL084 680P C247 220K 100K 100N 100N AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi AGNDi -5VAi AGNDi AGNDi Schiller AG ECG PACEMAKER TRIGGER MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 108 TP26 DGNDi AGNDi DGNDi 10U/16V 33U/16V 10U/16V SGL41 TP31 -5VDi SGL41 TP30 1U/16V -5VAi 100N BAV99 TP29 -10V -10Vi Schiller AG DC-DC CONVERTER (EKG) MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...
  • Page 109 100R C232 C191 R338 120P TP86 TP66 TP85 PAPERMARK DETECTOR U44E NB/DUBOX-2 C189 C190 74HC04 390P 390P U44F CAVE CAVE 74HC04 Schiller AG PAPERMARKER MK12-1 (AT-2) 2391FA Altgasse 68 CH-6340 Baar Size: Entw: TM Date: 05.10.99 Sheet Drawn by: STR...

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