EDAN SE-601B - 4.5 Attaching Electrodes to Patient

SE-601 Series Electrocardiograph Service Manual Inspection and Troubleshooting
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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.
Item
Test Point
Reference Result
①
5V
5.0V±0.15V
②
V-
≤-5.9V
③
2.5V
2.5V±0.085V
④
-2.5V
-2.5V±0.05V
⑤
3.3V
3.3V±0.1V
⑥
V+
≤5.9V
5) Compare the measurement results with the reference results in the list. If any one of the
results exceeds the reference range, the ECG board defection is confirmed. Replacement of
the ECG board is recommended.
② V- ④ -2.5V ⑥ V+ ① 5V ③ 2.5V
⑤
3.3 V
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