The subsystem exception report series and the device-dependent section of the detail edit (PRINT) report identify 3390 models as follows:
| IDENTIFIER | 3390 MODELS |
|---|---|
| 3390-01 | Models A14, A18, B14, B18, and B1C |
| 3390-02 | Models A24, A28, B24, B28, and B2C |
| 3390-03 | Models A34, A38, B34, B38, and B3C |