The problem is with a power supply fan, replace the power supply. 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 |
| 167 | 8203-E4A, 9407-M15, 9408-M25 | 44V4195 | Power supply (ac) | Un-E1 |
| 167 | 8204-E8A, 9409-M50 | 44V3559 | Power supply (ac) | Un-E1 |
| 167 | 8204-E8A, 9409-M50 | 42R6607 | Power supply (dc) | Un-E1 |
| 167 | 9117-MMA | 39J2779 | Power supply | Un-E1 |