EDAN F15 Series Service Manual

F15 Series Fetal & Maternal Monitor Service Manual Modules’ Malfunction Verification
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Chapter 8 Modules’ Malfunction Verification
When a module is suspected of malfunction, verify it with the method described in this chapter.
NOTE:
For all the interfaces, the first pin is the one with a square solder pad.
8.1 Verifying Malfunction of the Main Control Board
To verify the main control 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
Test Pin
Reference Result
Remark
1
TP198
(19V3_IN )
18.7~19.9VDC
Voltage outputted from
power supply to main
control board
2
TP128
(+5V_IN)
4.75~5.25V
3
TP129
(+12V_IN)
11.40~12.60V
4
TP130
(V_PRT_IN,24V)
22.80~25.20V
5
TP131
(VBUS)
8.25~12.60VDC
(batteries supply power)
or
18.7~19.9VDC
(AC supply power)
6
TP25
(3.3V)
3.14~3.46V
Working pressure of U9
(iMX6) main control chip
7
TP26
(3.3V)
3.14~3.46V
8
TP22
(1.5V)
1.40~1.60V
9
TP16
(1.375V@default;
1.425V@1GHz)
1.20~1.57V
10
TP17
(3V)
2.85~3.15V
11
TP18
(3V)
2.85~3.15V
12
TP19
(1.5V)
1.42~1.58V
13
TP20
(1.8V)
1.71~1.89V
14
TP8
(1.375V@default;
1.20~1.57V

EDAN F15 Series Specifications

General

Brand	EDAN
Model	F15 Series
Category	Monitor
Language	English