Nihon Kohden ECG-2350 Electrocardiograph Service Manual PDF Download
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The Nihon Kohden ECG-2350 Electrocardiograph Service Manual is the official technical reference for service and maintenance of the ECG-2300 series (including models ECG-2300 and ECG-2350).
This manual provides engineers with complete diagnostic, maintenance, and calibration procedures to ensure the reliability and safety of the electrocardiograph during hospital or clinical use.
Description
Nihon Kohden ECG-2350 Electrocardiograph Service Manual PDF Download
IMAGES:
Description
The Nihon Kohden ECG-2350 Electrocardiograph Service Manual is the official technical reference for service and maintenance of the ECG-2300 series (including models ECG-2300 and ECG-2350).
This manual provides engineers with complete diagnostic, maintenance, and calibration procedures to ensure the reliability and safety of the electrocardiograph during hospital or clinical use.
Table of Contents
GENERAL
Safety Information
Handling Precautions
Warranty & EMC Compliance
Specifications
Panel Descriptions (Top, Side, Rear)
Connector Pin Assignments
Circuit and Block Diagrams
TROUBLESHOOTING
How to Troubleshoot
Power Problem Flowchart
Operational Diagnostics
Recording Issues
No Display or Power Fault Isolation
Noise and Signal Distortion Checks
Paper Feed and Thermal Head Malfunctions
MAINTENANCE
Periodic Replacement Schedule (Battery, LCD, Thermal Head, Motor)
Cleaning & Disinfection Procedures
Setting Date/Time & Saving System Settings
System Test (User and Service Modes)
Recorder, LCD/LED, and Key Tests
Adjusting Recording Darkness & Cue Mark
Software Version and SD Card Verification
DISASSEMBLY / ASSEMBLY
Safety Warnings and Tools Required
Removing/Attaching Top Case, Power Board, Main Board, LCD, Recorder, Thermal Head, etc.
Fuse Locations and Wiring Layout
REPLACEABLE PARTS LIST
Complete part codes for boards, sensors, connectors, and power modules
Detailed component diagrams for main board, power board, and patient cables
⚙️ Technical Highlights
| Specification | Details |
|---|---|
| Model Series | ECG-2300 / ECG-2350 |
| Channels | 12-lead |
| Input Impedance | Approx. 50 MΩ |
| Sampling Rate | 500 samples/s (signal), 8000 samples/s (ECG input) |
| Filters | EMG (25/35 Hz), High-cut (75–150 Hz), AC (50 Hz) |
| Recorder Type | Thermal printer, 200 dpi |
| Recording Speed | 5–50 mm/s |
| Power Supply | AC 100–240 V ±10% / Battery 12 V |
| Display | LCD with backlight |
| Dimensions (W×H×D) | 348 × 127 × 256 mm |
| Weight | 4.2 kg (approx., without battery/paper) |
| Compliance | IEC 60601-1 / 60601-2-25 / 60601-2-51 |
| Defibrillator Protection | CF Type (with patient cable BJ-961D) |
| Operating Temp. | +5 °C – +40 °C |
| Storage Temp. | –20 °C – +65 °C |
| PDF Pages | ~230+ |
| Language | English |
| File Quality | Original scan, fully searchable |
🧰 Included Service Tests & Adjustments
Recorder & Thermal Head Tests
LCD, LED, and Key Function Tests
CRO/EXT Signal Verification
USB and LAN Communication Tests
Mac Address & System Info Configuration
Cue Mark and Platen Roller Diameter Adjustment
📂 File Details
| Attribute | Information |
|---|---|
| Manual Name | Nihon Kohden ECG-2350 Service Manual |
| Models Covered | ECG-2300 / ECG-2350 Series |
| Manufacturer | Nihon Kohden / Shanghai Kohden |
| Type | Electrocardiograph Service Manual |
| File Type | PDF Download |
| Pages | ~230 |
| Language | English |
| Quality | High-resolution, searchable, bookmark enabled |
