The problem is an operator panel logic problem. Use the following table to determine the part number for the field replaceable unit (FRU):
| CCIN or FFC | Type and model | Part number | Description | Location code |
| 165 | 8204-E8A | 42R5505 | Control (operator) panel | Un-D1 |
| 169 | 9117-MMA | 39J3272 | Control (operator) panel | Un-D1 |