The disk drive might be failing.
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 |
| 707 | Any | 74G7011 | 4.5 GB 16-bit DE disk drive assembly | |
| 707 | Any | 74G7015 | Electronics card assembly |