Siemens AG SPB7-250.844.01 Page 6 of 10 MAMMOMAT
Novation
DR
Medical Solutions Rev. 03 08.04 CS SD 24 Wiring Diagrams
4-6 X041E
Switches 0
Test points
Switch Page Description
S2 6-1 HV disable; HV = High Voltage
Upper position = Normal mode
Lower position = HV disable mode
S3 6-1 Manual activation of Power aid unit
S4 6-1 Manual reset of AEC processor
Test point Page Description
5VD_1 6-1 Logic supply voltage: 5 volt digital
0VD_1,2,3,4,5 6-1 Logic supply voltage: 0 volt digital
P15VA 6-1 Logic supply voltage: Positive 15 volt analog
0VA_1,2,3 6-1 Logic supply voltage: 0 volt analog
N15VA 6-1 Logic supply voltage: Negative 15 volt analog
5V_RS232 6-1 Logic supply voltage: 5 volt; for communication with PXCM unit
(Brick unit)
0V_RS232 6-1 Logic supply voltage: 0 volt; for communication with PXCM unit
(Brick unit)
5VI_RS232 6-1 Logic supply voltage: 5 volt; for communication with Service-PC,
Opdima WS and Printer
0VI_RS232 6-1 Logic supply voltage: 0 volt; for communication with Service-PC,
Opdima WS and Printer
M_WD_RESET_ 6-1 Signal that resets the master CPU and thus causes the entire Mam-
momat system to restart.
GEN_POWER_ON 6-1 Signal to the generator that turns on the generator and thus the
Mammomat system.
DC_BUS_OK 6-1 Signal from the generator, indicating the DC-bus voltage is within its
allowed voltage window.
HV_OFF_INT_ 6-1 Indicates that the signal M_PLD_HV_OFF_ from the PLD circuit
has detected an event that shall terminate or prevent high voltage
generation.
It causes the signal HV_ON from the Master board to go inactive,
which immediately prohibits high voltage generation.
REQ_HV_ON 6-1 Signal from PLD and CPU for generating high voltage and thus start
the exposure.
It will together with the signal GRID_O_HV_ON set the signal
HV_ON.
HV_ON 6-1 Signal set by the signals REQ_HV_ON and GRID_O_HV_ON out-
putted to the generator. One of two necessary signals, together with
the signal EN_HV_ON, to generate high voltage and thus start the
exposure.
This signal goes low at grid returns, due to GRID_O_HV_ON, thus
causing the intermittent loading mode during exposure.
EN_HV_ON 6-1 Signal from the exposure release buttons at the Control panel to the
generator. One of two necessary signals, together with the signal
HV_ON, to generate high voltage and thus start the exposure.
D750 MASTER BOARD:
LIST OF SWITCHES, TEST POINTS
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