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Innomed Medical Heart Screen 60G Service Manual

Simultaneous 12-channel ecg devices with 58 / 80mm wide 1- / 3-channel built-in printer and lcd display
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Innomed Medical
Heart Screen 60G-80G-L
Service manual
Service Manual
for
Heart Screen 80 G-L
and
HeartScreen 60G
Simultaneous 12-channel ECG devices with 58 / 80mm
wide 1- / 3-channel built-in printer and
LCD display
D-5450-1-B
Document Number:
2014.01.09
1/84
D-5450-1-B_HS60G80GL_SM_ENG.doc

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Summary of Contents for Innomed Medical Heart Screen 60G

  • Page 1 Innomed Medical Heart Screen 60G-80G-L Service manual Service Manual Heart Screen 80 G-L HeartScreen 60G Simultaneous 12-channel ECG devices with 58 / 80mm wide 1- / 3-channel built-in printer and LCD display D-5450-1-B Document Number: 2014.01.09 1/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 2: Table Of Contents

    Innomed Medical Heart Screen 60G-80G-L Service manual 1 Contents CONTENTS ..............................2 THE HEARTSCREEN 80G-L ........................4 THE HEARTSCREEN 60G ........................4 DEVICES’ TECHNICAL PARAMETERS ....................5 ..............................5 ENERAL ........................5 AINS AND POWER SUPPLY ..............................5 AFETY 80G-L .....................
  • Page 3 Innomed Medical Heart Screen 60G-80G-L Service manual 6.5.3 CMRR check ............................ 26 6.5.4 Checking blocking ........................... 26 6.5.5 Checking frequency characteristic ....................26 6.5.6 Checking time-constant ........................27 6.5.7 Checking pacemaker detector......................28 6.5.8 Checking PACE tolerance ....................... 28 6.5.9 Checking amplifier latch-up watcher ....................

  • Page 4: The Heartscreen 80G-L

    Innomed Medical Heart Screen 60G-80G-L Service manual 2 The HeartScreen 80G-L The HeartScreen 80G-L is a battery-operated, modern 12-channel electrocardiograph, used to measure and graphically record the heart’s bioelectric potential during human heart and circulatory system examination. The device contains a 12-channel amplifier and ECG signal-processing unit. The built-in printer is 3-channel. The high-speed 12-channel data transfer over the serial line insures 12-channel on-line display on the PC.

  • Page 5: Devices' Technical Parameters

    Innomed Medical Heart Screen 60G-80G-L Service manual 4 Devices’ technical parameters Classification according to 93/42/EEC directives: Applied standards: IEC 601-2-25 functional AAMI EC11 functional IEC 62D functional IEC 601-1 safety EN 60601-1-2 IEC 61000-4 IEC 68-2-6 mechanical vibration IEC 68-2-29...

  • Page 6: Heart Screen 80G-Loperating Modes

    Innomed Medical Heart Screen 60G-80G-L Service manual HeartScreen 80G-L operating modes Monitoring 3-channel ECG monitoring on the LCD from any lead, including SPEC group as well, plus 1 rhythm channel. Within this: Manual printing Manual recording from any lead group on 3 channels, including SPEC group.

  • Page 7: Heartscreen 60G Operating Modes

    Innomed Medical Heart Screen 60G-80G-L Service manual HeartScreen 60G operating modes Monitoring 1-channel ECG monitoring on the LCD from any lead. Within this: Manual printing Manual recording from any lead group on 3 channels. Automatic printing Adjustable print length from the 12 standard ECG leads in 4x3 channel groups.

  • Page 8: Heart Screen 80G-Lprinting And Display Properties

    Innomed Medical Heart Screen 60G-80G-L Service manual Data acquisition 12 leads, simultaneous Sampling frequency 1000 Hz / channel A/D resolution 13 bit Referring to ± 10 mV signal range 2.5 µV/bit Stored signal resolution 500 Hz 10 µV/bit Serial line resolution during on-line ECG transfer 500 Hz 10 µV/bit...

  • Page 9: Devices' Components And Their Operation

    Innomed Medical Heart Screen 60G-80G-L Service manual 5 Devices’ components and their operation Devices’ block diagram of complete configuration: HS80G-L Main Board on Device Base PC Connection Mains Charger Digital Part Accu Pack Amplifier Tesztcsatlakozó HS60G or HS80G-L type device top...

  • Page 10: Hs80G-L Main Board Ecg Amplifier Unit

    Innomed Medical Heart Screen 60G-80G-L Service manual HS80G-L Main board ECG amplifier unit (D-1127B_HS80G-L_Main_Board_Electrical_Sch) 5.2.1 Main functions as grouped by the connection diagram: 1/9. ECG input This is where the device’s ECG input circuits and the main amplifier levels with some of the error handling circuits.

  • Page 11: Ekg Amplifier Unit Block Diagram

    Innomed Medical Heart Screen 60G-80G-L Service manual 5.2.2 EKG amplifier unit block diagram: Reference circuit F,L,R convert input MPX addr. V1-V6 Block on/off uController Data out Active „N” Latch-up check and Opto- point loop connections pace detection Isolating power supply...

  • Page 12: Hs80G-L Main Board Digital Part

    Innomed Medical Heart Screen 60G-80G-L Service manual HS80G-L Main board digital part (D1127B_HS80G-L_Main_Board_Electrical_Sch) 5.3.1 Main functions according to the connection diagram: 6/9. Processor Among other things it contains the microprocessor (U24) • the 512kByte external RAM (U29), • the calendar IC (U21 RTC), •...

  • Page 13: Heartscreen 80G-L Main Board Versions

    Innomed Medical Heart Screen 60G-80G-L Service manual 5.3.2 HeartScreen 80G-L Main board versions There are two versions of the HeartScreen 80G-L Main board. Important! If you order the HS80G-L Main board as service part, make sure you order the same type! One of the main differences is the design of the 50-pin ribbon cable ensuring the connection with the Interface Board: •...

  • Page 14: Digital Part Block Diagram

    Innomed Medical Heart Screen 60G-80G-L Service manual 5.3.3 Digital part block diagram: Insulation Connection LCD, Keyboard., Interface Test Circuits Printer., On/off Connector Pro- cesszor ECG data Serial ECG (U1) data ECG Block Signal Programming (U7) (U29) Voltage D[0..7] A[00..18] RTC & RAM...

  • Page 15: Hs60G And Hs80G-L Interface Board

    Innomed Medical Heart Screen 60G-80G-L Service manual HS60G and HS80G-L Interface Board (D1133B_HS80G-L_Interface_Board_Electrical_Sch.pdf and D1912A_HS60G_IF_Board_Electrical_Sch.pdf) 5.4.1 Main functions based on circuit diagram sides 1/2. LCD & Keyboard interface The on-board circuits’ tasks: • Accepting connection from the LCD, backlight on/off In case of HS60G the connection is different due to different LCD design.

  • Page 16: Interface Board Block Diagram

    Innomed Medical Heart Screen 60G-80G-L Service manual 5.4.2 Interface board block diagram The HS60G Interface board and the HS80G-L Interface board block diagram are similar, but besides the mechanical constructions certain blocks may be different according to the previous sections.

  • Page 17: Keyboard

    Innomed Medical Heart Screen 60G-80G-L Service manual Keyboard (R-1059C_HS80G-L_Revised_Keyboard_sch and R-1910A_HS60_Revised_Keyboard_sch) Indicates the device membrane keyboard connection diagram with the device power button and the LCD connection. Battery pack (R-1047C_HS80G-L_Assembled_Accupack.pdf) The battery pack contains 8 pcs of 1500 mAh rechargeable batteries. The pack is drained at the fourth cell. This output supplies the date / time IC and the record storing RAM with power when the device is turned off.

  • Page 18: Devices' Mechanical Construction

    Innomed Medical Heart Screen 60G-80G-L Service manual Devices’ mechanical construction 5.7.1 Devices’ summarized exploded diagrams Paper holder cover Device top Device base Connection’s label 2014.01.09 18/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 19: Devices' Base Exploded Diagram

    Innomed Medical Heart Screen 60G-80G-L Service manual 5.7.2 Devices’ base exploded diagram HS80G-L Main Board Insulating-Shielding Plate (Glued to device base) Device base Accu pack fastener Accu Pack 2014.01.09 19/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 20: Heartscreen 60G's Top Exploded Diagram

    Innomed Medical Heart Screen 60G-80G-L Service manual 5.7.3 HeartScreen 60G’s top exploded diagram Keyboard Device top On/Off foil On/Off switch Paper cover opener HS60G Printer head Display Display fastening spacers HS60G Paper Holder HS60G Interface Board 2014.01.09 20/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 21: Heartscreen 80G-L Top Exploded Diagram

    Innomed Medical Heart Screen 60G-80G-L Service manual 5.7.4 HeartScreen 80G-L top exploded diagram Keyboard Device Top On/Off foil On/Off switch Paper cover opener Display Printer head Display fastening spacers HS80G-L Interface Board HS80G-L Paper Holder 2014.01.09 21/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 22: Card Level Measurements - Main Board

    Innomed Medical Heart Screen 60G-80G-L Service manual 6 Card level measurements – Main Board Checking accu pack charging 6.1.1 Basic settings Connect an adjustable ground independent voltage source (with max. current limit) to battery connections J4 1-2 in parallel with a 5 Ohm / 15W resistance.

  • Page 23: Checking Voltages - Digital Circuits

    Innomed Medical Heart Screen 60G-80G-L Service manual Checking voltages – digital circuits Connect the power supply set to 9V/1A in place of the battery and turn the device on. Check the following signals: Measurement point Nominal value Tolerance Comment J11.9...

  • Page 24: Checking Voltages - Ecg Side

    Innomed Medical Heart Screen 60G-80G-L Service manual Checking voltages – ECG side Turn on the device, running from 9V (battery voltage). Connect short on the ECG input. For ECG side measurements the GND TP7.1 is the short. Measurement point Nominal value...
  • Page 25 Innomed Medical Heart Screen 60G-80G-L Service manual a/ In case of DC = 0 The signal’s amplitude on the measured lead should be 16000RV +/-320RV (+/- 2 %). Measured lead all other all other all other all other all other...

  • Page 26: Cmrr Check

    Innomed Medical Heart Screen 60G-80G-L Service manual 6.5.3 CMRR check For CMRR setting connect the patient cable and short all the electrodes except for the “N” point. Apply a 1Vpp +/- 0.5% amplitude 50Hz sine signal between the amplifier’s ground point and the shorted electrodes. Set the device to the highest, 0,5mV/cm sensitivity (x2) and 25 mm/sec speed.

  • Page 27: Checking Time-Constant

    Innomed Medical Heart Screen 60G-80G-L Service manual b/ In case of DC= +320 mV Measured lead all other all other all other all other all other all other all other all other 6.5.6 Checking time-constant Apply (8000 +/-0.5% RVpp / 0.05 Hz sine) + DC signal on the amplifier input according to the tables from a ground- independent generator.

  • Page 28: Checking Pacemaker Detector

    Innomed Medical Heart Screen 60G-80G-L Service manual 6.5.7 Checking pacemaker detector Warning ! With PACE generator measurements the system noise can be max. 0.5 mm! Apply (2000 +/-0.5%RVpp/10 Hz sine) + PACE signal on the amplifier input according to the tables from a ground- independent generator.

  • Page 29: Checking Amplifier Latch-Up Watcher

    Innomed Medical Heart Screen 60G-80G-L Service manual During measurement the PACE detector operation must be checked with the oscilloscope connected to the test connection’s PACE output. TTL level impulses must be visible on the oscilloscope, which width is 100 (+/- 20%) ms and appear with the PACE repeating frequency.

  • Page 30: Checking Printing

    Innomed Medical Heart Screen 60G-80G-L Service manual Checking printing 6.6.1 With printer partially connected Connect a 4700uF capacitor in parallel with the power supply (9V max. current limit) substituting the battery. Connect only the printer motor connection and load the paper. Connect a short on the ECG input.

  • Page 31: Card Level Measurements - 60G&80G-L Interface Boards

    Innomed Medical Heart Screen 60G-80G-L Service manual 7 Card level measurements – 60G&80G-L Interface Boards Checking voltages Connect the power supply set to 9V/1A to the connection of the accu pack on the Main Boar and connect the Interface Board. Don’t connect the printer to the Interface Board.

  • Page 32: Device Level Measurements

    Innomed Medical Heart Screen 60G-80G-L Service manual 8 Device level measurements HeartScreen 80G-L Basic functions Connect a device top part without the printer head and the generator. Before downloading the program connect the power supply set to +9V in place of the battery. Remove the resistor.

  • Page 33: Heartscreen 60G Basic Functions

    Innomed Medical Heart Screen 60G-80G-L Service manual HeartScreen 60G Basic functions Connect the keyboard, the LCD and the generator. Before downloading the program connect a power supply set to +9V in place of the battery. Remove the resistor. Connect the other power supply – set to 3.6V – to the J17 battery drain point. Connect the negative points of the two power supplies.

  • Page 34: Leakage Current Measurement

    Innomed Medical Heart Screen 60G-80G-L Service manual 8.3.1.2 Leakage current measurement Leakage current measurement during operation with 253 V examination voltage. Measurement place Allowed value / CA / Between the mains pins and the protective ground Between the mains pins and the patient connection...

  • Page 35: Latch-Up Watcher Check

    Innomed Medical Heart Screen 60G-80G-L Service manual 8.3.3 Latch-up watcher check Only connect the DC generator to the amplifier input according to the table. The DC level has to be controlled between 0 and 450 mV. The filter must be turned off.

  • Page 36: Checking Frequency Transfer

    Innomed Medical Heart Screen 60G-80G-L Service manual 8.3.6 Checking frequency transfer Apply +DC signal onto the amplifier’s input (2000 +/-0.5% RVpp / 150 Hz sine) from a ground independent generator according to the table. DC must be +320, -320 mV.

  • Page 37: Checking Cmrr

    Innomed Medical Heart Screen 60G-80G-L Service manual c. “Noise” filter on Apply 4 mVpp 35Hz sine signal from the generator between the device’s V2 and all other connected inputs. The filter is acceptable if the dampening is greater than 20dB. The measurement should be performed on the V2 lead by making a recording at 50 mm/sec speed and normal amplification with the filter on.

  • Page 38: Maintenance And Service Procedures

    Innomed Medical Heart Screen 60G-80G-L Service manual 9 Maintenance and service procedures Device disassembly / re-assembly The device has to be disassembled in the following order (re-assembly must be performed in reverse order): Remove the self-adhesive connection-label from the back (make sure that the label is not damaged, as it can be replaced after re-assembly).
  • Page 39 Innomed Medical Heart Screen 60G-80G-L Service manual Turn the device right side up again, and carefully lift the device top (during re-assembly take care that the cables going from the battery pack to the Main Board are not caught between the screw stubs connecting the top and bottom part).

  • Page 40: Further Disassembly Of The Bottom Part

    Innomed Medical Heart Screen 60G-80G-L Service manual 9.1.1 Further disassembly of the bottom part: Remove the battery connections. If this was the goal of disassembly, remove the battery. After removing the indicated screws, the HS80G-L Main Board can be removed.

  • Page 41: Further Disassembly Of The Top Part - Heartscreen 80G-L

    Innomed Medical Heart Screen 60G-80G-L Service manual 9.1.2 Further disassembly of the top part – HeartScreen 80G-L: Disconnect the connection at the power button and the receptacles on the board accepting the printer head cables. Remove the Interface Board holding screws and remove it from the device (during re-assembly note the LCD position: tilt, etc).
  • Page 42 Innomed Medical Heart Screen 60G-80G-L Service manual The paper bin can be removed regardless of the LCD, but first disconnect the printer head cables on the Interface Board. Now unscrew the screws according to the diagram, and the paper bin can be removed from the device’s top part (during re-assembly take care of proper door position).

  • Page 43: Further Disassembly Of The Top Part - Heartscreen 60G

    Innomed Medical Heart Screen 60G-80G-L Service manual 9.1.3 Further disassembly of the top part – HeartScreen 60G: Disconnect the connection at the power button and the receptacles on the board accepting the printer head cables. Remove the Interface Board holding screws and remove it from the device (during re-assembly note the LCD position: tilt, etc).
  • Page 44 Innomed Medical Heart Screen 60G-80G-L Service manual The paper bin can only be removed after removing the LCD, by unscrewing the screw indicated on the diagram. Remove the paper bin from the device’s top part (during re-assembly take care of proper door position).

  • Page 45: Reprogramming The Device

    Innomed Medical Heart Screen 60G-80G-L Service manual Reprogramming the device Beside the device, the following are required to reprogram the device: Serial cable Magnet for reprogramming The software update program The reprogramming procedure 1. Connect to the PC with the serial cable.

  • Page 46: Possible Errors And Troubleshooting

    Innomed Medical Heart Screen 60G-80G-L Service manual 10 Possible errors and troubleshooting Problem Possible causes Solutions When connecting the charger to the One of the fuses in the charger Change the fuse and find the reason mains, the appropriate voltage adapter has burned out.
  • Page 47 Innomed Medical Heart Screen 60G-80G-L Service manual Problem Possible causes Solutions Only one side of the LCD is The cable between the Interface Check the connecting ribbon cable, the operational, or nothing is visible, Board and the Main Board is...
  • Page 48 Innomed Medical Heart Screen 60G-80G-L Service manual Problem Possible causes Solutions When turned on, the device always Soldering is not satisfactory. Check the soldering on the digital part starts with a memory error. of the Main Board. Resolder the IC’s with the exception of the processor.
  • Page 49 Innomed Medical Heart Screen 60G-80G-L Service manual Problem Possible causes Solutions The printed curve is missing along The printer head is dirty or a pixel Clean the printer burning head with a horizontal line. has burnt out on the burning head.

  • Page 50: Assembly Drawings

    Innomed Medical Heart Screen 60G-80G-L Service manual Assembly drawings 11.1 Main board 2014.01.09 50/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 51 Innomed Medical Heart Screen 60G-80G-L Service manual BOTTOM: 2014.01.09 51/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 52: Hs80G-L Interface Board

    Innomed Medical Heart Screen 60G-80G-L Service manual 11.2 HS80G-L Interface Board BOTTOM 2014.01.09 52/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 53: Hs60G Interface Board

    Innomed Medical Heart Screen 60G-80G-L Service manual 11.3 HS60G Interface Board BOTTOM 2014.01.09 53/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 54: Schematics

    Innomed Medical Heart Screen 60G-80G-L Service manual Schematics 12.1 HS80G-L Main Board 2014.01.09 54/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 55 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 55/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 56 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 56/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
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  • Page 63: Hs80G-L Interface Board

    Innomed Medical Heart Screen 60G-80G-L Service manual 12.2 HS80G-L Interface Board 2014.01.09 63/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 64 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 64/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 65: Hs60G Interface Board

    Innomed Medical Heart Screen 60G-80G-L Service manual 12.3 HS60G Interface Board 2014.01.09 65/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 66 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 66/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 67: Accu Pack

    Innomed Medical Heart Screen 60G-80G-L Service manual 12.4 Accu pack 2014.01.09 67/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 68: Hs 60G And Hs 80G-Lmain Board Eversion

    Innomed Medical Heart Screen 60G-80G-L Service manual 12.5 HS 60G and HS 80G-L main board E version Schematics: D-1127-1-E Board: R-3350-5 2014.01.09 68/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 69 Innomed Medical Heart Screen 60G-80G-L Service manual Bottom 2014.01.09 69/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 70 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 70/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 71 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 71/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
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  • Page 78 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 78/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 79: Hs 60G Interface Board Bversion

    Innomed Medical Heart Screen 60G-80G-L Service manual 12.6 HS 60G Interface board B version Schematics: D-1912-1-B Board: R-3962-3 Bottom 2014.01.09 79/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 80 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 80/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 81 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 81/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...

  • Page 82: Hs 80G-L Interface Board Dversion

    Innomed Medical Heart Screen 60G-80G-L Service manual 12.7 HS 80G-L Interface board D version Schematics: D-1133-1-D Board: R-3961-4 BOTTOM 2014.01.09 82/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
  • Page 83 Innomed Medical Heart Screen 60G-80G-L Service manual 2014.01.09 83/84 D-5450-1-B_HS60G80GL_SM_ENG.doc...
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This manual is also suitable for:

Heart screen 80g-l

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