IBM 5280 Maintenance Information Manual page 113

Page of SY31-0602-0
As updated December 5,1980
By TNL SN20-9590
346
SOLENOID AND BAIL ADJUSTMENT
1.
2.
3.
4.
5.
6.
I
7.
Power off.
DANGER
Capacitor discharge voltage might be present at the
socket when the AC drive motor power cable is
disconnected.
Disconnect the AC drive motor power cable
EI.
Power on.
Insert a diskette and close the diskette locking
lever
O.
Install a jumper from
fJ
(ground) to
I)
(-head
load).
Install a jumper from
D
(ground) to
II
(-disable
stepper motor)_
DANGER
The solenoid case becomes hot after continuous use.
Loosen the solenoid locking screw
II.
22 Head Load Solenoid and Bail
346
CAUTION
Do not let the solenoid plunger or the bail actuator cable
turn.
8. Turn the solenoid to obtain a gap 1I0f 0.3 to 0.7
millimeters
(0.012
to
0.028
in.) between the head
load arm
1m
and the bail
m.
9. Tighten the solenoid locking screw.
10. Move the head/carriage assembly
II
by hand from
one end to the other and check the gap
II
at each
end of the. head/carriage movement.
11.
If the gap is not within the limits for all of the
head/carriage movement, go back to step
7.
I f the
gap Dis correct, proceed with step 12.
12. Remove the jumpers installed in steps 5 and 6.
13. Open the diskette locking lever and remove the
diskette.
14. Power off.
15. Reconnect the AC drive motor power cablell.