MPI 40 Series - Page 80

4.6.5 Track 00 End Stop Alignment
To adjust the track 00 end stop perform the following steps in the
order listed:
A. Verify the radial-track alignment (see paragraph 4. 6 .1).
B. Verify the track 00 sensor alignment (see paragraph 4.6.3).
C. Apply power to the disk drive and select drive.
D. Command a seek to track 00.
E. Adjust the end stop tab, located on the chassis at the
rear of the drive, to approximately 0.010 inch from the end
stop post which is mounted on the stepper pulley (refer to
figure 4-9). Command a maximum track seek, then a return to
track 00. Assure that the end stop post does not hit the
end stop tab.
4.6.6 Ejector Tension/Release Adjustment
There are two parts to the ejector adjustment. One is to apply
tension to the ejector block so it will latch when a diskette is
installed; the second is to lift the ejector block so it will
discharge when the door is opened. Adjustment assumes ejector has
just been reassembled with no tensioning at all.
4.6.6.1 Ejector Tension
With the door open and the ejector discharged, slightly compress
the spring and turn it two full revolutions counter-clockwise
(as viewed from the front of drive). Hold the spring tension
and let it decompress until the spring end is resting on the
ejector block (refer to figure 4-12).
4.6.6.2 Ejector Release
With the door opened, ensure that the ejector release spring-end
will rest on or slightly above the angled area of the ejector
block when the ejector is loaded. Now close the door; spring-
end should move beneath the ejector block. If it does not, bend
the spring-end so that it does. Refer to figure 4-14 for the
proper spring position.
4.6. 7 Pressure Pad Arm Adjustment
On the pressure pad arm adjustment block, (refer to figure 4-12)
the center screw is to secure the block to the ejector shaft and
the upper set screw controls the attitude of the pressure pad arm.
To adjust the pressure pad arm proceed as follows:
4-27