SE-1200 Series Electrocardiograph Service Manual Inspection and Troubleshooting
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4) Compare the measurement results with the reference results in the list. If any one of the
results exceeds the reference range, the main board defection is confirmed. Replacement of
the main board is recommended.
5.3.2 ECG Board Test
To verify the ECG board,
1) Make sure that the malfunction of ECG measurement is not caused by other defects, such as
defective connection, inoperative electrodes or main board, etc.
2) Open the main unit following the procedures described in Chapter 6, “Electrocardiograph
Disassembly”.
3) Switch on the device.
4) Measure the voltage to earth of the test points listed below by using a multimeter.
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