Siemens MOBILETT Plus Manual page 49

Integration of the tube current
Tube current circuit errors
If, however, the microprocessor 80C166 on the CPU board D1 determines after several
consecutive measurements that the actual tube current "MA POS" is below the minimum
value of 5 mA, will be interpreted as an error message.
The unit then reacts as follows.
•
the signals "INV A" and "INV B" are disabled,
•
10 beep tones are generated by the buzzer on board D3,
•
the yellow exposure-indicator lamp is turned off,
•
the exposure heating is switched off,
•
the preheating is switched on,
•
the rotating anode is braked for 9 s
•
an error message number is shown in the Control and display panel.
This error message number can be acknowledged by pressing the selection button "kV+".
If the problem occurs again when repeating the exposure, proceed according to the Ser-
vice Instructions.
1. 7s if FW version lower than V.1.4 or V.1.4E.
Siemens-Elema AB
Solna, Sweden
Register 6 SPR8-215.850.02
Rev. 01
1
,
Page 3 of 4
01.02 SPS-UD
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MOBILETT Plus/ Plus E