Siemens MOBILETT XP Troubleshooting Manual page 39

Error messages
ERR 12
System
mode:
Standby
ERR 13
System
mode:
Standby
ERR 14
System
mode:
Standby
Siemens AG
Medical Solutions
Short-circuit signal at the filament inverter (D927)
Explanation: Permanent short-circuit in the filament inverter during stand-by
(test point D916, TP SCH).
Action:
•
Check test point TP - SCH on D916 (CPU) (high = error, short-circuit is
detected).
•
Check the cable connection between D916.X11 (CPU) and board D927.
•
Check D916 (CPU): Switch off the system, disconnect plug X5 of board
D927, switch the system on again.
If ERR 12 continues to be displayed, D916 is to be replaced.
If ERR 6 is displayed, D916 is ready for operation.
•
Possible defects: Cable connection X11 (D927-D916); D916 (CPU); D927.
Capacitor bank voltage too low
Explanation: D916 (CPU) detects a capacitor bank voltage that is too low.
Action:
•
Check the connection between D916 (CPU) and D952.X20, connection
between D927 and D952 (X3).
•
Check the voltage at capacitor block TP - Vc on D916 (CPU) approx. 4.4
V DC and at fuse F5 on D927 approx. 440 V DC. (Measurement factor
1:100)
•
Format the capacitor bank using service program 1, (ERR 13 is also out-
put for an excessive leakage current of one or more capacitors).
Possible defects: D916, D952, D972, C1-C12,
Battery/charger - switching error
Explanation: D916 (CPU) detects a battery charge error.
Action:
•
Check cable connections D982 X2-D916 (CPU) X2.
•
D982 defective.
Possible defects: D982, D916 (CPU)
SPR8-230.840.01.05.02
11.05
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MOBILETT XP