Safety Information - Siemens MAMMOMAT 300 Repair Instructions

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Safety information

Checks or adjustments performed with radiation ON, are identified with this symbol:
Fig.1 X-ray warning symbol
Prior to performing any service work with the system open, disconnect it from the power
line supply using the main circuit breaker. Always disconnect the system from the line
voltage prior to removing or inserting a board. Adjust switch S2 (SS) on board D702 to
"OFF" (lower position) to prevent any unintended release of high voltage and/or radiation
(disables the SS relay).
WARNING
WARNING
CAUTION
WARNING
MAMMOMAT 300 / 3000
If the system has been switched off only at the control console or
with switch S2/D711, line voltage is still present at the line con-
nection for the generator, at line filters Z1, Z2, at transformer T1,
and at transformer T10 on board D711 (refer to circuit diagram).
After switching the system off, approximately 380V DC is present
in the intermediate circuit. This is indicated by LED V24 on board
D710. Within 3 minutes, the voltage will drop to less than 30 volts
and the LED will go out.
The boards contain components that are very sensitive to electro-
static discharge. They must be handled with care. (Observe ESD
guidelines).
The metal band on the front of the stand has sharp edges which
can cause injury. When removing the side covers, the edge pro-
tection strips must be attached as a safety precaution.
Remove the edge protection strips only when you have reat-
tached the side covers or if a height adjustment is necessary.
Register 5 RXB7-230.091.05
Rev. 03
Page 2 of 2
07. 98 TD SD 24
Prerequisites
Siemens AG
Medical Engineering
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