Solenoid And Bail Adjustment - IBM 5280 Maintenance Information Manual

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
II .
Power on.
I nsert a diskette and close the diskette locking
lever
O.
Install a jumper from
fI
(ground) to
D
(-head
load).
Install a jumper from
II
(ground) to
II
(-disable
stepper motor).
DANGER
The solenoid case becomes hot after continuous use.
Loosen the solenoid locking screw
m.
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 of 0.3 to 0.7
millimeter (0.012 to 0.028 inch) between the head
load arm
1m
and the bail
iii .
9. Tighten the solenoid locking screw.
10.
Move the head/carriage assembly
0
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. If the
gap
II
is 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 cable.