Dräger Babylog 8000SC, Technical & Service Manual, Page: 40 / 155

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Dräger Medical AG & Co. KGaA 6173.3
Function description Babylog 8000
10 Components of the Electronic Assembly
The electronic assembly consists of the following printed circuit boards and subassemblies:
Power supply unit
Motherboard PCB
CPU 68000 PCB
I/O PCB
Flow PCB (Babylog 8000) (optional)
Monitoring PCB/Watchdog PCB
Front Adapter PCB
Front Controller PCB (Babylog 8000/Babylog 8000 SC with LC display )
Front PCB (Babylog 8000/Babylog 8000 plus with EL Display)
Display PCB (Babylog 8000/Babylog 8000 SC with LC display )
EL display (Babylog 8000/Babylog 8000 plus with EL display)
Potentiometer field
Display field
Communication PCB (optional)
Interface PCB (optional)
10.1 Power Supply Unit
The power supply unit supplies Babylog with the following voltages:
+5 V
+15 V
–15 V
+27 V
The power supply unit comprises the mains connection, the ON/OFF switch, and the fuses.
10.2 Motherboard PCB
All electrical connections between the individual printed circuit boards are led through the Motherboard
PCB. Cable connections go to the front panel, to the pneumatic assembly, and to the rear panel, which
contains the rechargeable battery, the fan, the loudspeaker, and the flow-sensor connection.