Adjustment - IBM 5114 Maintenance Information Manual

130
HEAD LOAD SOLENOID AND BAIL
(Page 2
of
3)
4. Return the 5114 to operational status as follows:
a. Turn off the IPO switch.
b. Reinstall the diskette drive cover (112).
CAUTION
The cable routing must be the same as when
the diskette drive was removed because of the
electrostatic noise.
c. Connect the drive motor power cable.
d. Reinstall diskette adapter card A 1 C1.
e. Reinstall the diskette drive in the 5114.
f. Turn on the IPO switch.
Adjustment
Perform the service check before performing the
adjustment procedure.
1.
Adjust the bail and carriage arm gap as follows:
a. Loosen the solenoid locking screw • .
b. Turn the solenoid in the casting for a 0.015
:!:
0.005 inch (0.4
:!:
0.13 mm) gap
II
between the
bail
II
and the carriage arm tab • . (A clockwise
rotation of the solenoid decreases the gap.)
c. Tighten the solenoid locking screw • .
d. Remove the jumper installed in step 2 of the
service check.
e. Reinstall the diskette drive cover assembly.
f. If the head gap is to be adjusted, go to step 2.
If the head gap is not to be adjusted, go to
step 3 of the service check.
2. Adjust the gap between the heads as follows:
3.
2·26
Turn the bail stop screw
II
clockwise until the
heads just touch; then turn the screw
counterclockwise one· turn.
Perform the service check.
o
Carriage Arm Tab
fJ
Bail
II
Bail Mounting Screw
II
Bail Return Spring
III
Solenoid Locking Screw
R/W Heads
DScrew
II
Read/Write Head Gap
II
Bail Stop Screw
Carriage Assembly
Solenoid
Plunger
Cover Assembly