Chapter 5: Setup / service program
Fresenius Medical Care 4008 S (Version V10) SM-EN 7/01.13 5-33
The audible signal can be deactivated by pressing the Audio paused key. If the audible signal is
deactivated, the Audio paused key flashes to alert the user.
The audible signal allows the operator to evaluate the signal state without having to have a view of the
monitor. This is advantageous if measurements must be taken behind the device (e.g., hydraulics unit).
The CPU1: RD DIGITAL INP menu provides the E:CPU1_KEY_TESTING item. This menu item can be
used to test the keys.
The key actuated is shown on the display.
The four arrow keys, the On/Off key and the Conf key are not implemented because their function can
be checked by selecting the appropriate menu.
The fields to in the display are defined as follows:
Note
In DIAGNOSTICS, the signals are listed in the order of their electric
connection, i.e. in latch groups of 8 signals each according to the 8-bit
data bus and according to the latch numbering on the wiring diagram
(e.g., P.C.B. LP 633-5: CS_LATCH0 – CS_LATCH6).
The signals are not grouped by relationship (e.g., all bibag
®
signals in
successive row). An exception here are the signals for activating the
solenoid valves. If possible, these are listed in the menu by their number
to facilitate finding an individual valve because, usually, several valves
must be activated at the same time for trouble-shooting purposes.
Based on their assignment to latch groups, signals can be easily found
in the menu by means of the wiring diagram - even if the signal name
has changed. Already one known signal within one latch group is
sufficient to find the renamed signal in the menu by counting.
The voltage values specified can differ because of tolerances in the
particular devices.
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