Troubleshooting; Power Supply And Voltage Distribution - Dräger Medical Fabius Tiro Technical & Service Manual

Troubleshooting

Troubleshooting
1 Power Supply and
Voltage Distribution
Dräger Medical AG & Co. KGaA
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This section contains information to assist the Draeger qualified Service Rep-
resentative in locating electrical faults affecting operation of the Fabius Tiro. A
simplified electrical block diagram is given in
shooting efforts begin with verifying power supply voltages, the following
paragraph outlines the voltage distribution scheme within the machine along
with test points for each of the voltages.
A piping diagram (Figure
also included in this section.
In the Fabius Tiro, the power supply delivers 28 VDC to the main controller
unit PCB assembly. Some of the other voltages derived on this assembly can
be measured at the connectors listed in Table 1. Fuse data is listed in Table 2.
Controller PCB connector locations are shown in
Table 1 Test Points and Allowable Ranges
Controller PCB
J6-1, + 28 VDC
J6-4, Common
J1-1, + 5 VDC
J1-14, Common
J2-1, +12 VDC
J2-20, Common
J16-1, +10 VDC
J16-9, Common
Table 2 Fuse Data
Fuse
External 2.5 A, T
F4 3.15 A
F1 4.0 A, T
F2 2.5 A,T
F3 1.6 A,T
6020.002
Figure
4) and a pneumatic control diagram
Figure
Function
Power In
Fresh Gas Display
Front Panel Display
Fresh Gas Flow Sen-
sors
Rating Location
Power Entry
Power Entry
Controller PCB
Controller PCB
Controller PCB
Revision A Released
Fabius Tiro
1. Since most trouble-
(Figure 5) are
2.
Acceptable Range
26.6 VDC to 29.4 VDC
4.75 VDC to 5.25 VDC
11.5 VDC to 12.5 VDC
9.99 VDC to
10.01 VDC
Function
Mains
Battery
Battery
+28 V dist
+28 V dist
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