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F15 Series Fetal & Maternal Monitor Service Manual
Modules’ Malfunction Verification
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Lower case interface board
5)
If any one of the results exceeds the reference range, the lower case interface board defection
is confirmed. Replacement of the module is recommended.
8.4
Verifying Malfunction of AC-DC Power Board
To verify the AC-DC power board,
1)
Open the main unit using the procedures described in section 9.3.
2)
Switch on the monitor. (Powered by AC or battery.)
3)
Measure the voltage to earth of the pins listed below, using a multimeter:
Item
Reference Pin
Test Pin
Reference Result
○
1
1
st
and 2
nd
pin of J3
3
rd
and 4
th
pin of J3
18.70-19.90V
4)
If any one of the results exceeds the reference range, the AC-DC power board defection is
confirmed. Replacement of the board is recommended.
○
3
TP16
○
1
TP32
○
2
TP31
○
4
TP18
○
3
TP16
○
4
TP18
○
5
TP52
○
6
TP1