Siemens AG SPB7-250.844.01 Page 10 of 10 MAMMOMAT
Novation
DR
Medical Solutions Rev. 03 08.04 CS SD 24 Wiring Diagrams
4-10 X041E
LEDs: 0
Comment: Before making any service/maintenance on the generator modules
both LEDs H3 and H4 shall be off, thus making sure the DC-bus
voltage not is present.
The DC-bus voltage discharges below 60 volt within 3 minutes.
LED Page Module Description
28V_prim 4-5 Mains input
converter
Logic supply voltage: 28-30 volt, only to the generator modules.
Note: The voltage is hazardous.
5V_RS232 4-5 Mains input
converter
Logic supply voltage: 5 volt; for communication with PXCM unit
(Brick unit)
-15VA 4-5 Mains input
converter
Logic supply voltage: Negative 15 volt analog
+15VA 4-5 Mains input
converter
Logic supply voltage: Positive 15 volt analog
28V_sec 4-5 Mains input
converter
Logic supply voltage: 28-30 volt, only to the generator modules.
+5VD 4-5 Mains input
converter
Logic supply voltage: 5 volt digital
DC_BUS_OK 4-5 Mains input
converter
The DC-bus voltage is OK, that is, inside its upper and lower limits.
Note: The LED can only be lit when the D750 Master board gives a
GEN_POWER_ON signal.
DC_BUS_FAIL 4-5 Mains input
converter
The DC-bus voltage is outside its upper or lower limits.
Note: The LED can only be lit when the D750 Master board gives a
GEN_POWER_ON signal.
H3 4-5 Mains input
converter
The DC-bus voltage is present (>15 volt) to the AC inverter and to
the Tube power supply.
Note: If LED H3 not is lit but H4 is lit, indicates the fuse F2 inside
the Mains input converter has blown and need to be replaced.
H4 4-5 Mains input
converter
The DC-bus voltage is present (>15 volt) to the HV inverter.
AC_ON 4-5 AC inverter The AC output voltage is present.
HV_ON 4-5 HV inverter The EN_HV_ON signal is set and thus x-ray exposure is on.
GENERATOR: LIST OF SWITCHES,
POTENTIOMETERS, TEST POINTS, LEDs
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