Editing IBM 5110 Troubleshooting Guide (section)

== 8-Inch Floppy Drive Faults (5114) ==

* '''No drive activity''' — 5114 PSU dead, or cable to 5110 unseated.
* '''Drive spins but won't read''' — head dirty, alignment drift, drive belt slipping.
* '''Won't load head''' — head load solenoid fatigued or stuck.
* '''Write errors''' — write-protect sensor, head alignment.
* '''CRC errors''' — drive belt aged, oxide shedding from old Diskette 2D media, head dirty.
* '''Spindle won't spin''' — motor brushes worn.

The 5114 MIM SY31-0551 documents per-symptom diagnosis with FRU swap decision tree.