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Innomed Medical Hear Screen 112C-1 User Manual

Innomed Medical Hear Screen 112C-1
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Innomed Medical Heart Screen 112C-1 Service manual
1/47 D-7443-1-C
Service Manual
for
Heart Screen112C-1
Simultaneous 12-channel ECG devices with 112mm wide
3-channel built-in printer and
LCD display

Questions and Answers:

Innomed Medical Hear Screen 112C-1 Specifications

General IconGeneral
BrandInnomed Medical
ModelHear Screen 112C-1
CategoryMedical Equipment
LanguageEnglish

Summary

Devices' Technical Parameters

General Features

Describes reference temperature, operating temperature, humidity, and environment.

Lead Groups

Details standard and Cabrera lead group configurations for ECG measurements.

Heart Frequency Measurement

Specifies the measurement range and accuracy for heart frequency.

ECG Amplifier Specifications

Details input signal range, frequency response, sensitivity, CMRR, and filters.

Printing Features

Describes printing speed, paper width, resolution, and printed data content.

Display Specifications

Details display type, viewing resolution, and number of displayed curves.

Communication Parameters

Covers communication type (USB, Wi-Fi) and services.

Mechanical Data

Provides device size and weight information.

Pacemaker Pulse Detection

Explains how the device detects and handles pacemaker signals.

Devices' Components and Their Operation

Device Block Diagram

Illustrates the overall configuration of the HeartScreen112C-1 device components.

Main Board Overview

Diagram showing the main board with analog and digital parts labeled.

Main Board Analog Part Diagram

Block diagram illustrating the analog part of the main board.

Interface Block Diagram

Diagram showing the interface board components and connections.

Battery Pack Details

Information on the battery pack composition, thermistor, and thermal protection.

Summarized Exploded Diagrams

Summarized exploded diagrams of the device for mechanical assembly.

Base Exploded Diagram

Detailed exploded diagram of the device's base components.

Top Exploded Diagram

Detailed exploded diagram of the device's top components.

Board Level Measurements

Main Board Voltage Tests

Procedures for checking voltages on the main board's digital and analog parts.

Interface Board Voltage Tests

Procedures for checking voltages on the interface board.

Device Level Measurements

Basic Functions Testing

Tests for patient cable surveillance, power cord, and battery charging.

Leakage Current Measurement

Measures leakage current during operation and in error conditions.

Sensitivity and DC Tolerance Checks

Examines sensitivity and DC tolerance of the ECG amplifier.

Latch-up Watch Check

Tests the latch-up watch circuit's operation with DC input.

Noise and Baseline Checking

Measures input noise and baseline deviation on the null-line.

Frequency Response Check

Checks the ECG amplifier's frequency response to AC signals.

Filter Checks

Tests the 'Line' filter (50/60Hz) and 'Noise' filter functionality.

CMRR Check

Checks the Common Mode Rejection Ratio (CMRR) of the ECG amplifier.

Printing ECG Signal Quality

Verifies the quality and continuity of printed ECG signals.

Maintenance and Service Procedures

Device Disassembly and Assembly

Step-by-step instructions for disassembling and reassembling the device.

Device Reprogramming

Procedure for reprogramming the device software using a PC and USB cable.

Possible Errors and Troubleshooting

Power Supply Output Voltage Issues

Troubleshooting steps when no appropriate voltage is measured at the power supply output.

CHARGE LED Not On

Troubleshooting steps when the CHARGE LED does not illuminate.

Device Turns Off Immediately

Troubleshooting for the device shutting down right after power on.

Software Not Starting

Troubleshooting when the software fails to load after device power on.

No Screen Picture, Printer Works

Troubleshooting for screen display failures while the printer functions.

Device Not Turning On From Battery

Troubleshooting steps when the device fails to power on using battery.

Device Not Turning On From Mains

Troubleshooting steps when the device fails to power on from mains.

Keys Not Operational

Troubleshooting for non-responsive keys or touch screen failures.

Device Reprogramming Failure

Troubleshooting when the device cannot be successfully reprogrammed.

Memory Error on Startup

Troubleshooting for persistent memory errors upon device startup.

PC Connection Issues

Troubleshooting steps for failed PC connection or data transfer.

Single ECG Channel Noise

Troubleshooting for noise or interference on a single ECG channel.

Multiple ECG Channel Noise

Troubleshooting for noise or interference across multiple ECG channels.

Mains Filter Ineffective

Troubleshooting when the mains filter does not reduce noise.

Excessive Baseline Movement

Troubleshooting for excessive baseline drift or movement in ECG signals.

Missing Horizontal Line on Printout

Troubleshooting for missing horizontal lines on the printer output.

Printer Not Printing Despite Paper

Troubleshooting when the printer does not produce output with paper loaded.

Faded Printout Sections

Troubleshooting for faded or incomplete sections on printed output.

Assembly Drawings

Main Board (TOP) Assembly Diagram

Diagram showing the top side components of the Main Board.

Main Board (BOTTOM) Assembly Diagram

Diagram showing the bottom side components of the Main Board.

Interface Board (TOP) Assembly Diagram

Diagram showing the top side components of the Interface Board.

Interface Board (BOTTOM) Assembly Diagram

Diagram showing the bottom side components of the Interface Board.

Schematics

Main Board Schematics

Schematic diagrams for the HeartScreen112C-1 Main Board.

Interface Board Schematics

Schematic diagrams for the HeartScreen112C-1 Interface Board.

Battery Package Schematics

Schematic and connection details for the HeartScreen112C-1 battery package.

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