Siemens MOBILETT XP Troubleshooting Manual page 37

Error messages
ERR 6
System
mode:
Standby
ERR 7
System
mode:
Standby
ERR 8
System
mode:
Standby
Siemens AG
Medical Solutions
Ih < I preheat (filament current error)
Explanation: The instantaneous filament current (test point IH) is less than
the specified nominal value (test point IHS) of the microcontoller (D916).
Action:
•
Check the resonant filament current (D916; TP-I), the filament current
(D916, TP-IH), and the nominal filament current value (D916, TP-IHS). IH
and IHS must be the same. (Further information is available in the "Fila-
ment circuit" section of this document).
Possible causes: Defective cable/contacts between D927 (X5) and the sin-
gle tank; fuse F5 blown on D927; D927; D916; ribbon cable X11
(D927-D916); single tank (heating coil, filament transformer).
Ih > I preheat (filament current error)
Explanation: The instantaneous filament current (test point IH) is greater
than the specified nominal value (test point IHS) of the microcontoller
(D916).
Action:
•
Check the resonant filament current (D916; TP-I), the filament current
(D916, TP-IH), and the nominal filament current value (D916, TP-IHS). IH
and IHS must be the same. (Further information is available in the "Fila-
ment circuit" section of this document).
Possible causes: D927; D916.
Rare causes: Defective cable/contacts between D927 (X5) and the single
tank; fuse F5 blown on D927; ribbon cable X11 (D927-D916); single tank
(heating coil, filament transformer).
Static kV measured value <> 0
Declaration: D916 detects actual kV error.
Action:
•
Check the cable connection of measurement data log D907, the single
tank, and D916.X8 (CPU).
Possible causes: Defective single tank, defective cable, defective D916
(CPU).
SPR8-230.840.01.05.02
11.05
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MOBILETT XP