Dräger Evita 4 - Measuring the Voltages on the Power Supply PCB; Printed Circuit Board on Extender Board; Printed Circuit Board in the Evita

5664.500/800 Evita 4/Evita 2 dura 06/98 Repair Instructions Page 43
For internal use only. Copyright reserved. GBR5664500T055664800.fm 18.03.99
Dräger Medizintechnik
D
6.3 Measuring the Voltages on the Power Supply PCB
You can measure the output voltages of the Power Supply PCB using one of the following
two methods.
6.3.1 Printed Circuit Board on Extender Board
•Mount the CO
2
Carrier PCB on an extender board.
• Measure the voltages at the P4 connector (see connector pin assignment).
Fig. 23: Power Supply PCB, soldering side
6.3.2 Printed Circuit Board in the Evita
• Insert the CO
2
Carrier PCB into the second slot viewed from top.
• Remove the cover of the Evita (see “Removing the Power Supply Unit”).
• Measure the voltages at the P4 connector (see connector pin assignment).
P4 (Power supply outputs and inputs of the switching signals. The outputs are isolated
from the connector J1)
Pin Assignment Pin Assignment
1 +5 V 5 –15 V
2 +8 V 6 +15 V
3 DGND 7 on/off for the +8.5 V (5 V = on)
4 AGND 8 on/off for the +15 V (5 V = on)
P2
1
P4
J1
J2
1
1