IBM 5280 Maintenance Information Manual page 111

Page of SY31-0602-0
As updated December 5, 1980
By TN L SN20-9590
344
HEAD GAP SERVICE CHECK
1 _ Power off_
2_ Close the diskette locking lever
11-
3.
(3180) Visually check for a gap
fJ
of 3 to 4 milli-
meters (0.118 to 0.157 inch) between the head
D
and the head load arm
II.
(51 TO) Visually check
for a gap
fJ
of 2 to 3 millimeters (0.079 to 0.118
inch) between the head surfaces
D
and
II.
4. I f the gap is correct, proceed with step 5. I f the gap
is not correct, go to 345, step 3.
5. Open the diskette locking lever.
6. If a new head/carriage assembly was installed, go to
343.
20 Head Load Solenoid and Bail
II
a
344