GE Healthcare
Senographe DS
Revision 1
Service Information and Procedures Class A 2385072-16-8EN
ERR SUB A003 - Gantry Error Messages
Page no. 871
Chapter 9
ERR-SUB-A-003.fm
112/025
HALT
ROTATION ABSO-
LUTE ENCODER
ERROR
The Rotation Potentiometer (absolute encoder) sig-
nal is too noisy. The change in the Rotation Poten-
tiomter voltage is significantly higher than expected
during normal motion for a period of at least 20 ms.
1. Check all cables are firmly connected on the
Rotation Board, and pass around the sides of the
Rotation Board. Ensure none of the cables pass
over the Rotation Board as this may lead to EMC
interference, and suprious error messages.
2. Ensure that the 6 mounting screws on the Rota-
tion Board are securely fastened so that the
Rotation Board is properly grounded.
3. Check the cabling and cable connection between
the Rotation Board and the Rotation Potentiome-
ter.
4. If the problem persists, the issue is not bad
cabling or bad earthing. Change the Rotation
Potentiometer then perform Rotation Calibration.
5. If the problem persists, change the Rotation
Board then perform Rotation Calibration.
D/R A227
D/R A221
CAL A021
112/026
WARNING
ROTATION MCU
CALIBRATION
DATA CORRUPT
The MCU calibration data is corrupt. The checksum
on the calibration data stored by the MCU does not
match.
Perform a rotation calibration. If the problem per-
sists, change the rotation board.
CAL 021
D/R A221
112/027
WARNING
ROTATION DSP
CALIBRATION
DATA CORRUPT
The DSP calibration data is corrupt. The checksum
on the calibration data stored by the DSP does not
match.
Perform a rotation calibration. If the problem per-
sists, check the rotation cabling, change the rotation
board.
CAL 021
D/R A221
112/028
HALT
ROTATION MCU
EEPROM FAILURE
There is an MCU EEPROM failure. The readback on
the newly written data to the EEPROM has failed.
Change the Rotation board then perform a Rotation
Calibration.
D/R A221
CAL 021
112/029
WARNING
ROTATION POSI-
TION ERROR
The rotation motion did not stop at the target/limit
position and went further than the allowed margin.
Refer to
JC DIAG A1115 ROTATION POSITION
OVERSHOOT/ROTATION CONTROL FAILURE
to fix the problem.
A1115
Code
Category
Text in Log File or
on LCD
Possible Cause/Recommended Action
Job Card