Power Supply Board Test - EDAN SE-601A Service Manual

SE-601 Series Electrocardiograph Service Manual

5.3.4 Power Supply Board Test

To verify the power supply board,
1) Open the main unit following the procedures described in Chapter 6, "Electrocardiograph
Disassembly".
2) Switch on the device.
3) Measure the voltage to earth of the test points listed below by using a multimeter.
Item
①
②
③
④
GND
③ 8.3V ② 5V
4) Compare the measurement results with the reference results in the list. If any one of the
results exceeds the reference range, the power supply board defection is confirmed.
Replacement of the power supply board is recommended.
Test Point
12V
5V
8.3V
① 12V
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Inspection and Troubleshooting
Reference Result
+12V± 0.6V
+5V± 0.25V
8.3V± 0.3V
GND