| Date | Run Number | Ring Number | Status | Reason
|
| ? 1994
| ??? | 13 | D
| dead preamplifiers ?
|
| ? 1994
| ??? | 15 | D
| dead preamplifiers ?
|
| ? 1994
| ??? | 22 | S
| drift field problems (FS,CS, CA HV reduced)
|
| 19.10.1995
| 125825 | 16 | D
| Sense Wires HV
|
| 31.07.1996
| 153221 | 14 | D
| Sense Wires HV
|
| 05.09.1996
| 157871 | 22 | D
| due to the drift field problems OFF,
also CA HV in neighbour rings 21, 23 reduced
|
| 28.02.1997
| 177391 | 8 | D
| Sense Wire HV (in the chamber)
|
| 01.02.1998
| | |
| after repair all channels O.K.
|
| 10.06.1998
| 207549 | 15 | D
| Sense Wire HV
|
