Solenoid And Bail Adjustment - IBM System/34 Maintenance Manual

25-530 SOLENOID AND BAIL ADJUSTMENT 8. Turn the solenoid in the casting for a 0.4 ± 0.13
millimeter (0.015 ± 0.005 inch) gap. between
/~-,
1. Remove the diskette drive (see paragraph 25-130). the bail and the carriage arm (a clockwise turn
decreases the gap).
\.-.
2. Disconnect the drive motor power connector.
9.
If the gap is correct for all of the carriage
DANGER
movement (cylinder 00 to cylinder 76), go to step
Voltage is still present at the power connector
10. If the gap is not correct for all the carriage
r'"
when the solenoid and bail are disconnected
movement, go back to step 8.
i,
"
-
and power is on.
10. Tighten the solenoid locking screw.
11. Remove the jumper
G.
~
12. Remove the paper from between the heads.
I
3.
Set Power to I (operator panel).
\
. .
....
__
....
13.
Reinstall the cover assembly (see paragraph
4. Remove the cover assembly (see paragraph
25-430).
25-420).
14. With the head load solenoid de-activated and the
5. Insert a strip of clean paper between the heads to
cover closed, visually check for a gap
e
of
prevent the head surfaces from touching.
approximately
3/32
to
4/32
of an inch between
the head surfaces. (This gap cannot be measured.)
6. Install a jumper
G
to activate the head load
solenoid.
15.
If the gap is correct, go to step
16.
If it is not
correct, turn the bail stop screw. clockwise until
DANGER
the heads just touch, then turn the screw
The solenoid case becomes hot after continuous
counterclockwise one complete turn.
/
use.
\..
16. Set Power to 0 (operator panel).
17. Connect the drive motor power cable. (If you
came from paragraph
25-480,
reinstall the
attachment card at A-A2L2.)
7. Loosen the solenoid locking screw
G.
18.
Set Power to I (operator panel).
'
......
"
...
'
18
25·530