Siemens MOBILETT XP Troubleshooting Manual page 43

Error messages
ERR 36
System
mode:
Exposure
ERR 37
System
mode:
Exposure
ERR 38
System
mode:
Exposure
Siemens AG
Medical Solutions
Short-circuit at the filament inverter
Explanation: D916 (CPU) detects a short-circuit at the filament inverter
during an exposure.
Action:
•
Check test point TP - SCH on D916 (CPU) (high = error, short-circuit is
detected).
•
Check the maximum heating rate at TP - FC1, D916 (CPU)
•
Check the connections between D927 (X5) and the single tank (termi-
nals 11 and 12).
Possible defects: D927, D916.
Error in the kV control loop
Explanation: D916 (CPU) detects an error in the kV control loop.
Action:
•
The value KV
actual
(TP-KVS).
•
Check the cable connections between D962, C1 and the single tank,
and between D916 (X8) and the single, D907.
•
Check the capacitors of the capacitor bank, all LEDs must light on D972
when the MOBILETT XP is "on".
Possible defects: Fuse F1..F12, F14 (80A) on D972; C1..C12 D972, D962;
D907; D916; C1 resonance capacitor.
Error in the mA control loop
Declaration: D916 (CPU) detects an error in the mA control loop (test point
D916 (TP - JR) and (TP - JRS).
Action:
•
Check the maximum frequency of filament inverter FC1.
•
Ensure that value I
•
Check the cable connections between D916 (X8) and single tank D907.
Possible defects: D916; D927; D907.
SPR8-230.840.01.05.02
11.05
(TP-KV) does not agree with the value KV
(JR) agrees with value I
actual
Page 43 of 72
CS SD 24
43
nominal
(JRS).
target
MOBILETT XP