Siemens MOBILETT Plus - Page 15

Display messages 2 - 5
Siemens-Elema AB SPR8-215.898.01 Page 5 of 22 MOBILETT Plus / - E/ - M
Solna, Sweden Rev. 05 01.02 SPS-UD
CAL 7 During
exposure
The exposure time is
too long.
The maximum exposure time is 2 s.
• The exposure is normally
interrupted earlier by "Err 5".
• Check the capacitance in the
capacitor bank, refer to section
"P03 - Capacitor bank and
charging test".
• Check the filament heating, refer to
section "P01 - Filament test".
• Check the tube current in
measuring point "MAPOS" on D1,
see page 140 and 141.
• Check the current to the single
tank, see section "Error diagnosis
HT and single tank".
Err 9 During
exposure
When measuring the
kV value, a large
high tension asym-
metry is detected.
Normally the kV value is symmetric
around ground. The acceptable devi-
ation is ± 19.5 kV. This corresponds
to HTD 2.5 V± 0.5 V.
• Intermittent measurement cables
or defective single tank.
• Check the measurement cable K9
between D1 and the single tank,
refer to page 140**.
• Check the current to the single
tank, refer to the section "Error
diagnosis HT and single tank".
• Measure the HTD signal on D1 and
compare it with notes and curves
on page 140 and 141**.
Dis-
played
messages
Mode of
operation
Cause Possible reason
* See section "Monitoring the kV- and mA-controls"
** Wiring diagram X037E
Tab. 1