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GE MAC 1200 Service Manual

Resting ecg analysis system
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GE Healthcare
MAC ™ 1200/MAC ™ 1200 ST
Resting ECG Analysis System
(2018357-003 & 2013503-003 PWAs)
Service Manual
2012250-095
Revision D
g

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Summary of Contents for GE MAC 1200

  • Page 1 GE Healthcare MAC ™ 1200/MAC ™ 1200 ST Resting ECG Analysis System (2018357-003 & 2013503-003 PWAs) Service Manual 2012250-095 Revision D...
  • Page 2 (PN 2018357-003 or 2013503-003) will render the MAC 1200 unit inoperable. MAC and MUSE owned by GE Medical Systems Information Technologies, Inc., a General Electric company, going to market as GE Healthcare. All other marks are owned by their respective owners.
  • Page 3 Compliance Compliance The country of manufacture can be found on the equipment labeling. The product complies with the requirements of standard EN 60601-1-2 “Electromagnetic Compatibility - Medical Electrical Equipment”. The safety and effectiveness of this device has been verified against previously distributed devices.
  • Page 4 Compliance For your notes Compliance-2 MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 5: Table Of Contents

    Contents The Basics ........1 About This Manual .
  • Page 6 Electronic Interfaces ..........24 Limitations .
  • Page 7 Repair Instructions ....... . 1 Safety Instructions ........... . . 3 Replacing Components .
  • Page 8 Indicators (LEDs) ........... 4 Automatic Functions .
  • Page 9 Schematic, PN 2033914-033, Sheet 5 ........10 Schematic, PN 2033914-033, Sheet 6 .
  • Page 10 MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 11: The Basics

    The Basics Revision D MAC 1200 resting ECG analysis system 1-1 2012250-095...
  • Page 12 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 13: About This Manual

    See the operator manual for the instructions necessary to operate the equipment safely in accordance with its function and intended use. This manual addresses both MAC 1200/1200ST units (international units) and MAC 1200 units (USA units). Information that is specific to either unit is identified.

  • Page 14: Illustrations And Names

    The Basics: About This Manual Illustrations and Names All illustrations in this manual are provided as examples only. They may not necessarily reflect your monitoring setup or data displayed on your monitor. In this manual, all names appearing in examples and illustrations are fictitious. The use of any real person’s name is purely coincidental.

  • Page 15: Basic Information

    Modem. Additionally the MAC 1200 ST can run stress test operating mode (Option Code). To control stress test devices the MAC 1200 ST has a modified keyboard with additional keys for stress test. Revision D MAC 1200 resting ECG analysis system 1-5...

  • Page 16: Variants Of The Mac 1200 Resting Ecg Analysis System

    The following table gives an overview of the different device models of the MAC 1200 resting ECG analysis system. Device Device Manufacturer ID Keypad Labeling Mains Voltage Model MAC1200 GE Medical Icons International 230V MAC1200 ST Systems MAC1200 Europe 2 GE Medical Text...

  • Page 17: Block Circuit Diagram Of Entire Instrument

    The Basics: Block Circuit Diagram of Entire Instrument Block Circuit Diagram of Entire Instrument MAC 1200 (US), Version 6.2 Program Modem Supply Memory ECG RAM Internal Buffered Boot Loader RS232 RS232 Interface Driver Configuration Memory Keypad Keypad Interface Display LCD Graphics Display...

  • Page 18: Mechanical Components

    The Basics: Mechanical Components Mechanical Components The main mechanical components comprise the upper and lower shell of the MAC 1200 resting ECG analysis system. The lower shell serves as a basic unit to receive the following assemblies.  Line power input module with fuse ...

  • Page 19: Functional Description

    Functional Description Revision D MAC 1200 resting ECG analysis system 2-1 2012250-095...
  • Page 20 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 21: Basic Information

    Functional Description: Basic Information Basic Information The block circuit diagram of the entire instrument in Chapter 1, “Block Circuit Diagram of Entire Instrument” and the functional blocks of circuit diagram sheets (P-plans) describe the individual functional blocks. Revision D MAC 1200 resting ECG analysis system 2-3...

  • Page 22: Switching Power Supply

    Functional Description: Switching Power Supply Switching Power Supply The switching power supply generates the fundamental device voltage for the PCB Control CS_CI and for the PCB NC Battery Charge. It has the following input specifications. Input voltage range: 85 ... 264 Vac Line frequency range: 47 ...

  • Page 23: Pcb Nc Battery Charge

    Functional Description: PCB NC Battery Charge PCB NC Battery Charge The MAC 1200 resting ECG analysis system can operate on battery power. With a new, fully charged NC battery, up to 50 ECGs can be recorded in Automatic (12- lead) mode. The PCB NC battery charge controls and monitors the charging process, depending on the status of the battery and the status of the device.

  • Page 24: Battery-Dependent Device Behavior

    If the operation is continued without line power, MAC 1200/ 1200 ST will shut down itself when a minimum level is reached to prevent the battery from a excessive discharge.

  • Page 25: Pcb Control Cs_Ci

    Functional Description: PCB Control CS_CI PCB Control CS_CI The PCB Control CS_CI is the main board of the MAC 1200 resting ECG analysis system. The main board accommodates the control functions of the device, except the line power supply and the NC battery-charging controller. Generation of Internal Power Supplies Logic Power Supply +5 V and +3.3 V The processor core and the memory is a fully +3.3 V design.

  • Page 26: Switch On/Off Circuit

    Functional Description: PCB Control CS_CI Switch On/Off Circuit The Switch On/Off circuit consists of the On/Off control and the Voltage control. The On/Off control switches the device on or off by switching the device supplies +UVERS and +USUPPSW. The On/Off control is supplied from the +5 VSTB. Device On Sequence The transition from device Off state, or Standby state when line power is connected, to device On state can only be activated by pressing the On/Off button.

  • Page 27: Ecg Recording And Front-End Processing

    Functional Description: PCB Control CS_CI ECG Recording and Front-End Processing The patient input is classified as being cardiac floating and is defibrillation-proof. The patient leads are connected with a 15-pin connector with a special form for the specified and released patient cables for the MAC 1200 resting ECG analysis system.

  • Page 28: Controller Core

    Functional Description: PCB Control CS_CI Controller Core The actual core comprises the Motorola Power PC MPC855T, which contains the following integrated components.  Chipselect logic  DRAM controller  SCC and SMC for RS-232  SPI interface  I/O ports ...

  • Page 29: Real Time Clock

    Functional Description: PCB Control CS_CI The Reset Configuration defines startup conditions like boot port size and clock generation source. Four LEDs indicate the device status in addition to the following. LED1: Active when a HRESET_ occurs. LED2: Indicator for the logic supply. LED3, LED4: Indicate internal software states.

  • Page 30: Memory

    Functional Description: PCB Control CS_CI Memory The complete memory of the MAC 1200 resting ECG analysis system is located on the PCB Control CS_C(I). The software of the device can be loaded through the JTAG port during the production process, or for service purposes with the appropriate programming software through the RS-232 interface.
  • Page 31 Functional Description: PCB Control CS_CI LCD Power Supply The LCD power supply VEE of –23 V is generated from the +5 V logic supply. The generation starts after HRESET_ becomes inactive to ensure that the logic supply of +5 V first is applied to the display. Adjusting Contrast Contrast adjustment of the display is accomplished with the contrast voltage V0.
  • Page 32 Functional Description: PCB Control CS_CI Keypad Interface The keypad interface contains the control register for 8 keypad columns and the receiving register for 7 keypad rows, and the control signals for the status LEDs: LED_LIN, LED_BATT_, LED_START, and LED_STOP. Using the matrix of 8 x 7, up to 56 keypads can be detected. Identification of the key pressed is as follows.
  • Page 33 Functional Description: PCB Control CS_CI Thermal Printhead Temperature Monitoring The thermal printhead temperature monitoring measures the temperature of the thermistor, located on the printhead. A constant current source effects a temperature-dependent voltage drop. If a printhead temperature of 55°C is exceeded, the signal REC_OVHEAT is activated and the heating of the printhead is prevented by disabling the signal STROBE.
  • Page 34 Functional Description: PCB Control CS_CI RS-232 Interface The MAC 1200 resting ECG analysis system has an RS-232 interface accessible with a 9-pin Sub-D connector. Except for the RS-232 driver chip, the interface is integrated into the control core of the MPC855T. The interface has the following attributes.

  • Page 35: Modem Supply

    (2018357-003 and 2013503-003). The main board generates a supply voltage of +8 Vdc, to operate a special GE modem direct on the RS-232 interface on the MAC 1200 device without the need for an external power supply for the modem.

  • Page 36: Internal Interfaces

    Functional Description: Internal Interfaces Internal Interfaces Mechanical Interfaces Mechanical interfaces are described in “Mechanical Components” on page 1-8. Electronic Interfaces This section describes the pinning, function and significance of the signals on the internal interfaces of the functional components. Interface to the Switching Power Supply The interface to the switching power supply is realized by the connector POSUP/ on the PCB Control CS_CI.
  • Page 37 Functional Description: Internal Interfaces BATT/ Pin Number Signal Input/Output Function Definition +24V Output Supply battery charging +24V Output Supply battery charging +24V Output Supply battery charging Code Coding Pin GND24V Common Ground GND24V From power supply GND24V After ferrite decoupling GND24V +UBATT Input...
  • Page 38 Functional Description: Internal Interfaces Interface to the Keypad The interface to the keypad is realized with the connector KEYB/. It contains the signals for the keypad rows and columns, the supply and the control signals for the status LEDs of the keypad. The foil connecting cable is part of the keypad itself. Connector denotation: KEYB/ Type:...
  • Page 39 Functional Description: Internal Interfaces Interface to the Motor The motor control signals are supplied through a 6-pin connection cable, plugged to the connector MOTOR/ on the PCB Control CS_CI. Connector denotation: MOTOR/ Type: Multipoint connector 1 x 6 pin, 180°, Reverse terminal protection, MODU II Interfaces for Production Tests Debug Port...
  • Page 40 Functional Description: Internal Interfaces In Circuit Programming Port With the In Circuit Programming Port, both CPLDs can be programmed or updated in a Daisy Chain queue. Connector denotation: ISP/ Type: Male connector, 2 x 5-pin, 180°, Pin 4: coding pin The function of the individual pins is given in the following table.

  • Page 41: Interfaces To Peripherals

    Functional Description: Interfaces to Peripherals Interfaces to Peripherals The MAC 1200 resting ECG analysis system has only 3 interfaces for peripherals.  Mains input  Patient input  RS-232 interface The mains input interface on the device is a 3-pin standard cold appliance socket connection, which is integrated into the mains input module.

  • Page 42: Electronic Interfaces

    Functional Description: Interfaces to Peripherals Electronic Interfaces RS-232 Interface The 9-pin sub-D Connector of the RS-232 interface is implemented on the PCB Control CS_CI directly. From Version V1.1, the remote start input pin is available on pin 8. In MAC1200 US devices the modem supply output +8 V is available on pin 6 additionally.
  • Page 43 Functional Description: Interfaces to Peripherals Patient Input The connection to the patient cable is realized with a 15-pin female sub-D Connector, implemented on the PCB Control CS_CI directly. The mechanical plastic housing ensures that only patient cables that have been released for use with the MAC...

  • Page 44: Limitations

    Functional Description: Limitations Limitations The following operating modes are not implemented in the MAC 1200 resting ECG analysis system.  No SpO2  No spirometry  No late potentials, no RR variability  No phono, no US Doppler  A scope output is not available. ...

  • Page 45: System Test Function

    System Test Function Revision D MAC 1200 resting ECG analysis system 3-1 2012250-095...
  • Page 46 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 47: General Information

    System Test Function: General Information General Information NOTE The master password used to override all other passwords is SYSTEM. All messages displayed during the self-test are in English. The functions for the system test are mostly menu-guided. Some tests require special auxiliary resources. These include interface testers or PC, connection cables, signal generators, etc.

  • Page 48: Test Start

    System Test Function: Test Start Test Start After simultaneously pressing the keys Shift + 12 Lead (or Auto), the initial display menu appears, so you can select a specific test. The specific test functions are activated by pressing the corresponding key. Table 1.

  • Page 49: Display Test

    System Test Function: Display Test Display Test After pressing the 1 key, the following menu appears. Table 2. Display Test Test Performed Function Test pattern Pressing this key generates a vertical stripe pattern. Each subsequent pressing generates the inverse display of its predecessor. Clear display All display pixels are inactive.

  • Page 50: Keyboard Test

    System Test Function: Keyboard Test Keyboard Test When the 2 key is pressed, the following menu appears. Table 3. Keyboard Test Test Performed Bleeper Test When a key is pressed, this key or its function is displayed. This can either occur by a triple character display, e.g., “AAA”...

  • Page 51: Motor Test

    System Test Function: Motor Test Motor Test When the 3 key is pressed, the following menu appears. Table 4. Motor Speed Test Test Performed Format/Speed Speed selection motor Start/Stop Start/Stop motor Terminate with any key. The speed select key is used to set the required speed and the motor is set into motion with Start/Stop.

  • Page 52: Test Results

    System Test Function: Test Results Test Results Pressing the 4 key triggers the output of the test results. The output of the test protocol supplies the following information.  Time and date  Device serial number  Device model  Software release ...

  • Page 53: Self-Test

    System Test Function: Self-Test Self-Test The test results outlined in “Test Results” on page 3-8 are gathered during the self- test, which is always performed on power-up. if errors are detected, a message appears on the display after the test, indicating the possible errors. The following error codes are used to identify the error.

  • Page 54: Recording Test

    System Test Function: Recording Test Recording Test The recording test is activated by pressing the 5 key. A window with 2 channels is displayed. Table 5. Motor Speed Test Test Performed Speed Selects the speed Start/Stop Starts and stops a real time 2 channel recording The selected speed and sensitivity are displayed.

  • Page 55: V24 Tests

    System Test Function: V24 Tests V24 Tests Several possibilities are available to test the serial interface. Signal transmission and receiving of the interface can be tested by an internal feedback from TXD and RXD. Signal transmission and receiving can also be tested with a remote station. For the test with a remote station, the connection cable from MAC...

  • Page 56: Send And Receive With Device (3)

    System Test Function: V24 Tests Send and Receive with Device (3) Sending and receiving can be tested with a remote device by pressing the 3 key. The device should be connected as described in “Send Test String to Device (2)”. After pressing the 3 key a test string is sent to the remote station.

  • Page 57: Time And Date

    System Test Function: Time and Date Time and Date Follow these instructions for checking and setting the time and date. Pressing the 7 key calls up the following display. Table 7. Time and Date Time (hh:mm) [18:25:29] Date (dd.mm.yyyy) [03.03.2003] To set time or date, select the corresponding time or date field by pressing the return key.

  • Page 58: Electrode Test

    System Test Function: Electrode Test Electrode Test The electrode test is started by pressing the 8 key. The following menu is displayed. Table 8. Electrode Test Electrode Test Terminate with any key Select pace electrode (key P) Pace electrode LA Cable = 10 electrodes (or no cable) The status of each electrode is displayed.

  • Page 59: Time Constant/Baseline Roll Filter

    System Test Function: Time Constant/Baseline Roll Filter Time Constant/Baseline Roll Filter Beginning with software release V5.2, the time constant can no longer be set in the service mode. It is accessible in the user mode under “System Setup”, Baseline roll filter, 0.04 Hz, 0.08 Hz, 0.16 Hz.

  • Page 60: Setting The Device Model

    System Test Function: Setting the Device Model Setting the Device Model The setting of the device model is activated by pressing the D key, the following display image appears. Table 9. Device Model Europe 2 JAPAN RUSS PHARMA (US devices only) WARNING Changing the device model affects the selection of the output formats and languages available, and can switch the program for...
  • Page 61 System Test Function: Setting the Device Model The table below shows the most important combinations: Table 10. Model Combinations Default Settings Device Model Interpretation Output Formats Languages Override Line Filter Function Enabled 1 INT HEART international international 50 Hz 2 USA 12SL 60 Hz 3 Europe 2...

  • Page 62: Interpretation (International Device Models Only)

    System Test Function: Interpretation (International Device Models Only) Interpretation (International Device Models Only) Switching over the program for interpretation is activated by pressing the H key, the following display image appears: Table 11. Interpretation HEART 12SL The currently enabled interpretation program appears in reverse video. WARNING Switching over to another program for Interpretation affects the measurement results and the interpretation.

  • Page 63: Pace Enhance

    System Test Function: Pace Enhance Pace Enhance Beginning with software release V5.2, the Pace Enhance mode can no longer be set in the service mode. It is accessible in the user mode under “System Setup”, Pace Enhancement, YES or NO. Revision D MAC...

  • Page 64: Serial Number

    System Test Function: Serial Number Serial Number The serial number of the device is displayed by pressing the N key.  The serial number is only displayed and cannot be changed.  The serial number is entered during the manufacturing process. ...

  • Page 65: Ergometer / Treadmills (Japan Device Model Only)

    System Test Function: Ergometer / Treadmills (JAPAN Device Model Only) Ergometer / Treadmills (JAPAN Device Model Only) Enable or disable ergometer/treadmill functionality in the Japanese device model by pressing the “O” key. The following display image appears. Table 12. Ergometers / Treadmills YES (drivers are available in Stress Test mode) NO (not available) Revision D...

  • Page 66: Aci-Tipi (Us Device Models Only)

    System Test Function: ACI-TIPI (US Device Models Only) ACI-TIPI (US Device Models Only) Enable or disable ACI-TIPI functionality by pressing the “O” key, the following display image appears: Table 13. ACI-TIPI ENABLE DISABLE NOTE ACI-TIPI can be DISABLED in the service mode at any time, independently of the the Patient Data Setup screen.

  • Page 67: Pharma

    System Test Function: Pharma Pharma The MAC 1200 device variant is configured in the service mode and any MAC 1200 can be configured as a PHARMA device.The Pharma device variant is designed for use by Clinical Research Organizations (CROs) in pharmaceutical trials. MAC 1200 units with the Pharma option are configured for specific pharmaceutical trials by CROs and then sent out to trial sites to collect data.
  • Page 68 System Test Function: Pharma For your notes 3-24 MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 69: Repair Instructions

    Repair Instructions Revision D MAC 1200 resting ECG analysis system 4-1 2012250-095...
  • Page 70 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 71: Safety Instructions

    Before replacing the primary fuses in the power input module, the device should also be switched off and the mains plug disconnected.  For replacing components, only the original GE components, mentioned in the spare parts list may be used. ...

  • Page 72: Replacing Components

    Repair Instructions: Replacing Components Replacing Components For all the following points, the “Safety Instructions” on page 4-3 need to be observed. WARNING The device has to be switched off. Opening the Device To open the device, follow this sequence. Release the five fastening screws on the underside of the device. Open the paper feed flap.
  • Page 73 Repair Instructions: Replacing Components Pull forward on lower part of connector port and small plastic tray will pop out with fuses. Remove fuses. Align and insert new fuses in plastic fuse tray. Position plastic fuse tray and snap back into position. Revision D MAC...
  • Page 74 Repair Instructions: Replacing Components Replacing the Keypad Open the device as described in “Opening the Device” on page 4-4. Replace with new Keypad FRU Assembly by connecting keypad connector in front of unit. Place the plastic spacer tubes back in the handle. Align upper shell to lower unit.
  • Page 75 Remove the battery and disconnect the battery plug BATT_IN/ from the PCB Battery Charge. WARNING Only original GE-supplied batteries may be used. (See Chapter 8, “Parts List” for details.) Defective NC-batteries or empty batteries should be disposed of in accordance with the applicable legal stipulations or returned to the factory.
  • Page 76 Repair Instructions: Replacing Components Replacing the PCB Control Before replacing the PCB, if still possible, print out the settings configured by the user and check the options enabled. Open the device. Disconnect the plug-in connector POSUP/ to the power supply unit, and the connector BATT_IN/ from the PCB battery charge.
  • Page 77 Repair Instructions: Replacing Components Replacing the Graphics Display Follow these instructions to replace the graphics display: Open the device. Open connector HOS/ and release the flat ribbon cable of the display. Undo the screws of both plastic display holders. Shift the display 2 mm in the direction to the handle and lift up display and holders.
  • Page 78 Repair Instructions: Replacing Components For your notes 4-10 MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 79: Troubleshooting

    Troubleshooting Revision D MAC 1200 resting ECG analysis system 5-1 2012250-095...
  • Page 80 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 81: Basic Information

    Troubleshooting: Basic Information Basic Information Repairs may only be conducted by approved service personnel. For all the following points, see Chapter 4, “Safety Instructions” section for items that need to be observed. NOTE The master password used to override all other passwords is SYSTEM. Device cannot be switched on even though power plug is plugged in ...
  • Page 82 Chapter 3, “Self-Test”. The error codes refer to the PCB Control, and should be noted as information for the service center. MAC 1200 Fails to Give Printout, No Paper Transport Perform the following test in the 6-lead operating mode.
  • Page 83 Troubleshooting: Basic Information MAC 1200 Only Prints on the Upper or Lower Section of the Printout  Is the paper feed flap is only engaged on one side? MAC 1200 Prints, but only Baselines are Printed Out  Are the electrodes applied correctly? ...
  • Page 84 Troubleshooting: Basic Information For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 85: Adjustment Instructions

    Adjustment Instructions Revision D MAC 1200 resting ECG analysis system 6-1 2012250-095...
  • Page 86 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 87: Basic Information

    Adjustment Instructions: Basic Information Basic Information For the MAC 1200 resting ECG analysis system, no adjustment of components is required. When PCB Control CS_CI, or the graphics display has been exchanged, the display contrast should be adjusted to an optimum contrast ratio as described in the user manual.
  • Page 88 Adjustment Instructions: Basic Information For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 89: Service And Maintenance

    Service and Maintenance Revision D MAC 1200 resting ECG analysis system 7-1 2012250-095...
  • Page 90 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 91: Technical Inspections/Preventative Maintenance

    Service and Maintenance: Technical Inspections/Preventative Maintenance Technical Inspections/Preventative Maintenance It is recommended that a technical inspection/preventative maintenance check is performed once a year. The following checks/tests are to be performed.  Check device and accessories for mechanical defects which impair their function.

  • Page 92: Visual Check

    Service and Maintenance: Technical Inspections/Preventative Maintenance Visual Check Device and accessories should be checked for the following:  Fuse cartridges comply with vendor's specifications.  Labels and inscriptions on the device relating to safety are clearly legible.  The mechanical state of the device permits its further use. ...
  • Page 93 Service and Maintenance: Technical Inspections/Preventative Maintenance Device Test Result Check  Output “Test Results” as detailed in Chapter 3, “Test Results”.  Main parameters:  All memory stores free from error?  ASIC test O.K?  Sample rate 1000?  Printhead voltage >18 V, battery charge O.K? ...
  • Page 94 Pace setting  Pace amplitude 6 mV  Pace duration 0.2 ms Adjust manual (6-lead) mode on MAC 1200 device to be tested and select lead groups I, II and III. MAC 1200 resting ECG analysis system Revision D 2012250-095...
  • Page 95 Service and Maintenance: Technical Inspections/Preventative Maintenance Start the recording. The pace pulses must be visible as spikes on the recording output. Identification of Disconnected Electrodes Reset the simulator to ECG signal at a heart rate of 60 bpm. Remove one electrode after the other from the ECG simulator.

  • Page 96: Safety Analysis Tests

    Service and Maintenance: Technical Inspections/Preventative Maintenance Safety Analysis Tests General Information The suggested safety analysis tests refer to the international standard IEC 601-1. The tests are generally performed with safety testers, the measuring circuits of most of which are calibrated according to IEC 601. The following is a general description of the tests to be performed.
  • Page 97 Service and Maintenance: Technical Inspections/Preventative Maintenance Enclosure Leakage Current Test This test is performed to measure leakage current from chassis to ground during normal condition (N.C.) and single fault conditions (S.F.C.). In all cases, the leakage current is measured from any exposed conductive parts to ground, the unit being tested has to be switched on and off.
  • Page 98 Service and Maintenance: Technical Inspections/Preventative Maintenance Test has failed if the measured values are greater than 50 µA. Electrical Diagram for Patient Leakage Current Test Power Cord Safety Tester High NORM Power Cord Patient Cable or Test Plug 022A For the protection of the test person, the following values of resistor R may be used. Type BF 22 kOhm (120 to 130 V)...

  • Page 99: Maintenance, Cleaning, And Disinfection

    Service and Maintenance: Maintenance, Cleaning, and Disinfection Maintenance, Cleaning, and Disinfection MAC 1200 resting ECG analysis system maintenance, cleaning, disinfection is performed in accordance with the “Cleaning, Disinfection and Maintenance” chapter of the operator manual for the MAC 1200 resting ECG analysis system. Applications requiring extensive recordings may result in deposits on the thermal array printhead, which normally do not have any adverse effect on the printing quality.
  • Page 100 Service and Maintenance: Maintenance, Cleaning, and Disinfection For your notes 7-12 MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 101: Parts List

    Parts List Revision D MAC 1200 resting ECG analysis system 8-1 2012250-095...
  • Page 102 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 103: Introduction

    Introduction The field replaceable units listed in this chapter cover two versions of the product:  MAC 1200 with the -002 board  MAC 1200 with the -003 board Most of the FRUs listed in this chapter apply to both versions of the product. Any FRUs that are specific to one of these product configurations, have appropriate notes added to the “Description”.

  • Page 104: Field Replaceable Units (Frus)

    MAC 1200 Europe 2 Basic unit with Battery Without Pump 10116830 MAC 1200 Europe 2 Basic unit with Battery With Pump Table 2. MAC 1200 ST Part Number Description 10116831 MAC 1200 ST International Basic unit with Battery Without Pump 10116835...
  • Page 105 Parts List: Field Replaceable Units (FRUs) Table 3. MAC 1200 and MAC 1200 resting ECG analysis system Manuals Part Number Description Language 2012250-021 MAC 1200 resting ECG analysis system Operator’s Manual English (Int’l) 2102250-022 MAC 1200 Operator’s Manual English, USA 2012250-038 MAC...
  • Page 106 2000076-001 Upper case with keypad and filter pane (USA) 2000077-001 Upper case with keypad and filter pane (Europe 2) Table 6. Upper Case for MAC 1200 ST Part Number Description 2006893-001 Upper case with keypad and filter pane (INT 1)
  • Page 107 43252210 Plastic holder for Printhead right side 41515439 Pressure spring for Printhead 50465725 Metal Tube 50465774 Contact Plate 50465726 Press Strip Table 8. Keypads MAC 1200 Part Number Description 39000200 Keypad International 39000201 Keypad Europe 2 39000202 Keypad USA 39000203...
  • Page 108 Table 11. MAC 1200 PWAs (version -002 board) Part Number Description 2000072-002 Spare PCB Control with remote start for MAC 1200 NOTE: (-002 board only) Backward compatible with all versions prior to v6.2. Not compatible with v6.2 or higher 2000072-002-1 Exchange PCB (-002 board.
  • Page 109 Parts List: Field Replaceable Units (FRUs) Table 12. Electronic Components / PCBs Part Number Description 91541936 Line filter with fuse holder 30344270 Battery 38803290 PCB battery charging (old board) 93011858 PCB power supply 91208449 Fuse T 1.25 A 92916717 Battery 3 V 0.255 Ah 30344291 Pump 12 V (Standard) 38803125...
  • Page 110 Connection cable from MAC 1200 to Modem 9-pin connector 22337802 Connection cable from MAC 1200 to Modem 25-pin connector (cable modem - CardioSmart) 22337804 Connection cable from MAC 1200 to Modem 25-pin with supply (US only) 22336604 Connection cable from MAC 1200 resting ECG analysis system to EC1200...

  • Page 111: Specifications

    Specifications Revision D MAC 1200 resting ECG analysis system 9-1 2012250-095...
  • Page 112 For your notes MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 113: Basic Information

    Resolution of the recording. Vertical: 8 dots/mm Horizontal: 25 mm at 25 mm/s Printer Paper GE CONTRAST Z-fold pad, 150 pages per pad, equivalent to a chart length of approximately 45 m. Paper width: 8.5 inch Sheet length: 11 inch To prevent damage to the printhead use only the original GE CONTRAST paper or the GE thermal paper with queue holes or marks.

  • Page 114: Paper Transport

    Specifications: Basic Information Paper Transport  Paper speed 5-25-50 mm/s, key selectable Error limits: at 25 and 50 mm/s, typ. ±1% at 5 mm/s, ±10% maximum  At paper end, the recorder emits an audio signal and stops recording the last pages of the pad bear a colored stripe in the lower margin Membrane Keypad Pushbuttons with tactile feedback.

  • Page 115: Detection Of Pacer Pulses

    Specifications: Basic Information Detection of Pacer Pulses  Pulse length between 0.1 and 2.5 ms  Pacer pulse marker independent of pulse polarity  Pulse amplitude between ±5 mV and ±700 mV Heart Rate Indication Derivation of the heart rate from all ECG signals. ...

  • Page 116: Data Interface

    Specifications: Basic Information Data Interface One serial RS232 interface for exchange of data with suitable external devices and software handshake. RS232 interface (standard V.24 interface):  Input voltage range: ±15 V maximum  Output voltage range ±5 V minimum Interface protected from electrostatic discharge for ±10 kV maximum. Pin Assignment of Data Port 5 circuit reference 3 TXDE...

  • Page 117: Signal Transmission

    Specifications: Basic Information Signal Transmission Patient Input to Recording After lead formation and digitization, simultaneous transmission of all electrode signals to the digital processing system; muscle filter, AC filter, pacing pulse identification, automatic or manual sensitivity adjustment, automatic baseline adjustment and drift compensation by means of the anti-drift system (A.D.S.) can be enabled or disabled simultaneously for all channels;...

  • Page 118: Ecg Calibration

    Specifications: Basic Information ECG Calibration Automatic recording of a defined voltage step, valid for all channels.  Calibration voltage, referred to ECG signal input: 1 mV Calibration pulse width on recording depends on paper speed 25 mm/s: 5 mm 50 mm/s: 10 mm 5 mm/s: 1 mm...

  • Page 119: Blocking

    Specifications: Basic Information Blocking Rapid charge reversal of the coupling capacitors in the preamplifiers after electrode application ensures that the baseline is quickly restored to its original position after overranging. Electrode Monitoring Audible and visual indication on the LCD of disconnected electrodes or line break; each single electrode is monitored.

  • Page 120: Mains Operation

    Specifications: Basic Information Mains Operation  Instrument design in protection class I according to IEC 601-1  Rated voltage range: 95 to 240 V  Operating voltage range: 85 to 264 V, 49 to 65 Hz  Rated current: 0.2 ... 0.6 A Fuse: 2 x T 1.25 A, 5 x 20 ...

  • Page 121: Environment

    Specifications: Basic Information Environment Operation  Temperature: between +10 and +40 °C / 50 and 104°F  Relative humidity: between 25 and 95%  Atmospheric pressure: between 700 and 1060 hPa (between 20.67 and 31.3 inches Hg) Transport and Storage ...
  • Page 122 Specifications: Basic Information For your notes 9-12 MAC 1200 resting ECG analysis system Revision D 2012250-095...

  • Page 123: Drawings

    Drawings Revision D MAC 1200 resting ECG analysis system 10-1 2012250-095...

  • Page 124: Basic Information

    388 032 90 R, sheet 1 388 032 90 PCB Battery Charge CS_CSI NOTE See MAC 1200 Service Manual, PN 2012250-023, for drawings that apply to the MAC 1200 with the -002 PWA board. 10-2 MAC 1200 resting ECG analysis system Revision D...

  • Page 125: High Level Assembly, Pn 101 168 01

    Drawings: High Level Assembly, PN 101 168 01...38, Sheet 1 High Level Assembly, PN 101 168 01...38, Sheet 1 Not required with -003 board. Revision A MAC™ 1200 resting ECG analysis system 10-3 2012250-095...

  • Page 126: High Level Assembly, Pn 101 168 01

    Drawings: High Level Assembly, PN 101 168 01...38, Sheet 2 High Level Assembly, PN 101 168 01...38, Sheet 2 Not required with -003 board. Revision A MAC™ 1200 resting ECG analysis system 10-4 2012250-095...

  • Page 127: Pcb Assembly Drawing, Pn 2033914-027

    Drawings: PCB Assembly Drawing, PN 2033914-027 PCB Assembly Drawing, PN 2033914-027 Revision A MAC™ 1200 resting ECG analysis system 10-5 2012250-095...

  • Page 128: Schematic, Pn 2033914-033, Sheet 1

    Drawings: Schematic, PN 2033914-033, Sheet 1 Schematic, PN 2033914-033, Sheet 1 Revision A MAC™ 1200 resting ECG analysis system 10-6 2012250-095...

  • Page 129: Schematic, Pn 2033914-033, Sheet 2

    Drawings: Schematic, PN 2033914-033, Sheet 2 Schematic, PN 2033914-033, Sheet 2 Revision A MAC™ 1200 resting ECG analysis system 10-7 2012250-095...

  • Page 130: Schematic, Pn 2033914-033, Sheet 3

    Drawings: Schematic, PN 2033914-033, Sheet 3 Schematic, PN 2033914-033, Sheet 3 Revision A MAC™ 1200 resting ECG analysis system 10-8 2012250-095...

  • Page 131: Schematic, Pn 2033914-033, Sheet 4

    Drawings: Schematic, PN 2033914-033, Sheet 4 Schematic, PN 2033914-033, Sheet 4 Revision A MAC™ 1200 resting ECG analysis system 10-9 2012250-095...
  • Page 132 Drawings: Schematic, PN 2033914-033, Sheet 5 Schematic, PN 2033914-033, Sheet 5 Revision A MAC™ 1200 resting ECG analysis system 10-10 2012250-095...
  • Page 133 Drawings: Schematic, PN 2033914-033, Sheet 6 Schematic, PN 2033914-033, Sheet 6 Revision A MAC™ 1200 resting ECG analysis system 10-11 2012250-095...
  • Page 134 Drawings: Schematic, PN 2033914-033, Sheet 7 Schematic, PN 2033914-033, Sheet 7 Revision A MAC™ 1200 resting ECG analysis system 10-12 2012250-095...
  • Page 135 Drawings: Schematic, PN 2033914-033, Sheet 8 Schematic, PN 2033914-033, Sheet 8 Revision A MAC™ 1200 resting ECG analysis system 10-13 2012250-095...
  • Page 136 Drawings: Schematic, PN 2033914-033, Sheet 9 Schematic, PN 2033914-033, Sheet 9 Revision A MAC™ 1200 resting ECG analysis system 10-14 2012250-095...
  • Page 137 Drawings: Schematic, PN 2033914-033, Sheet 10 Schematic, PN 2033914-033, Sheet 10 Revision A MAC™ 1200 resting ECG analysis system 10-15 2012250-095...
  • Page 138 Drawings: Schematic, PN 2033914-033, Sheet 11 Schematic, PN 2033914-033, Sheet 11 Revision A MAC™ 1200 resting ECG analysis system 10-16 2012250-095...
  • Page 139 Drawings: Schematic, PN 2033914-033, Sheet 12 Schematic, PN 2033914-033, Sheet 12 Revision A MAC™ 1200 resting ECG analysis system 10-17 2012250-095...
  • Page 140 Drawings: Schematic, PN 2033914-033, Sheet 13 Schematic, PN 2033914-033, Sheet 13 Revision A MAC™ 1200 resting ECG analysis system 10-18 2012250-095...
  • Page 141 Drawings: Schematic, PN 2033914-033, Sheet 14 Schematic, PN 2033914-033, Sheet 14 Revision A MAC™ 1200 resting ECG analysis system 10-19 2012250-095...
  • Page 142 Drawings: Schematic, PN 2033914-033, Sheet 15 Schematic, PN 2033914-033, Sheet 15 Revision A MAC™ 1200 resting ECG analysis system 10-20 2012250-095...
  • Page 143 Drawings: Schematic, PN 2033914-033, Sheet 16 Schematic, PN 2033914-033, Sheet 16 Revision A MAC™ 1200 resting ECG analysis system 10-21 2012250-095...
  • Page 144 Drawings: Schematic, PN 2033914-033, Sheet 17 Schematic, PN 2033914-033, Sheet 17 Revision A MAC™ 1200 resting ECG analysis system 10-22 2012250-095...
  • Page 145 Drawings: Schematic, PN 2033914-033, Sheet 18 Schematic, PN 2033914-033, Sheet 18 Revision A MAC™ 1200 resting ECG analysis system 10-23 2012250-095...
  • Page 146 Drawings: Schematic, PN 2033914-033, Sheet 19 Schematic, PN 2033914-033, Sheet 19 Revision A MAC™ 1200 resting ECG analysis system 10-24 2012250-095...
  • Page 147 Drawings: Schematic, PN 2033914-033, Sheet 20 Schematic, PN 2033914-033, Sheet 20 Revision A MAC™ 1200 resting ECG analysis system 10-25 2012250-095...
  • Page 148 Drawings: PCB Battery Charge CS_CSI, PN 388 032 90, Sheet 1 PCB Battery Charge CS_CSI, PN 388 032 90, Sheet 1 Sheet: Marquette Hellige GmbH 388 032 90 - D01 D-79007 Freiburg REVISIONS Not equipped in Version : F67267 Revision-No Index Date / Name Schematic...
  • Page 149 Drawings: PCB Battery Charge CS_CSI, PN 388 032 90, Sheet 2 PCB Battery Charge CS_CSI, PN 388 032 90, Sheet 2 Revision A MAC™ 1200 resting ECG analysis system 10-27 2012250-095...
  • Page 151 Asia Headquarters GE Medical Systems GE Medical Systems GE Medical Systems Information Technologies, Inc. Information Technologies GmbH Information Technologies Asia; GE (China) Co., Ltd. 8200 West Tower Avenue Munzinger Straße 5 1 Huatuo Road, Milwaukee, WI 53223 USA D-79111 Freiburg...

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