Verifying Malfunction Of The Fm Module - EDAN F9 Service Manual

F9 Fetal & maternal Monitor Service Manual

9.2 Verifying Malfunction of the FM Module

To verify the FM module,
1) Open the main unit using the procedures described in section 10.3.
2) Measure the voltage to earth of the pins listed below, using a multimeter:
FM Module PCBA
⑨ TP20
Item Pin
○ L16
1
○
TP19
2
○
TP18
3
○
TP22
4
○
TP10
5
○
TP16
6
○
TP15
7
⑧ T23
⑨ TP20
Modules' Malfunction Verification
Reference result
(+5±10%) V
(+6±10%) V
(+6.8±10%) V
(-5±10%) V
(+2.5±10%) V
(-6.5±10%) V
(+3.3±10%) V
(+3.3±10%) V
(+5±10%) V
- 42 -
L16
○
1
○ TP19
2
TP18
○
3
TP22
○
4
○ TP10
5
TP16
○
6
○ TP15
7
⑧ T23