Siemens MOBILETT Plus Service Instructions Manual page 23

Display messages
Dis-
played
messages
USE 24
USE 25
* See section "Monitoring the kV- and mA-controls"
** Wiring diagram X037E
Tab. 1
Siemens-Elema AB
Solna, Sweden
Mode of
Cause
operation
During exposure The last selected kV
and/or mAs value is
lost. The value has
been replaced with
40 kV and
0.5 mAs.
Generator ON The calculated load
of the anode target
has been lost .
SPR8-215.898.01
Rev. 05
Possible reason
•
The X-ray tube may have arced
several times, which temporarily
disrupted the control system.
•
Check the voltage in the backup
battery >2.8 V, refer to page 110**.
•
Check that the battery jumper is
attached, refer to page 110**.
•
If the error occurs repeatedly, the
single tank must be inspected
according to the section "kV and
single tank error diagnosis". If the
single tank is working properly and
the backup battery with battery
jumper are okay, replace D1. Refer
to page 110** and 140**.
The value is lost from CMOS mem-
ory. See also CAL 31.
•
Check all supply voltages on D1,
see page 110**.
•
Check that the battery jumper is
properly mounted and that the vol-
tage in the backup battery is
> 2.8 V, refer to page 110**.
•
A tube arcing has caused a tempo-
rary disturbance of the control
system.
•
If the error occurs repeatedly, the
single tank must be inspected
according to the section "kV and
single tank error diagnosis". If the
single tank is working properly and
the backup battery with battery
jumper are okay, replace D1. Refer
to page 110** and 140**.
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01.02 SPS-UD
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MOBILETT Plus / - E/ - M