Lp 748 Display Board (Bp) - Fresenius Medical Care 4008 E Technical Manual

8.28 P.C.B. LP 748 Display board (BP)
8.28.1 Description
General information
P.C.B. LP 748 comprises the display and the keyboard.
Plug connection on P.C.B. LP 748:
– X189, connection to P.C.B. LP 624
Display
All of the information required is given to the user by three multiplexed seven-segment displays
and two LEDs, which are fitted on bases.
Keyboard
The keyboard comprises three individual unlighted keys, which are directly soldered into the
printed circuit board.
If he presses a key, the user obtains an acknowledgement by a snap contact.
Fresenius Medical Care 4008 4/09.03 (TM)
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