Drive Motor Preliminary Speed; Adjustment - IBM 3270 Maintenance Manual

Drive Motor Preliminary Speed
Adjustment
Use this procedure for diskette drive A or B, or
both, when the Diagnostics program does not
load or the Speed Test does not execute. You
need fluorescent lighting for this adjustment.
1.
Remove the diskette drive (5-601-2) or
(5-601-6).
(Top View)
October 1984 5-601-17