Table of Contents
Advertisement
.010
+
.005 IN.
(.0254.:!: .0127 CM)
TRACK 00 STOP
--~~
__-.OlO-.030 IN
HEAD LOAD PAD
ADJUSTMENT
o
STOP MOUNTING
SCREWS (2)
Figure 5-2. Track 00/39 Stop and Head-Load Pad Adjustment
5.8.4
TRACK
00
SWITCH ADJUSTMENT
To adjust the track
00
switch position, see Figure 5-3 and use the following procedure:
A.
Power up disk drive and insert an Alignment Diskette.
B.
Step to track 00. This should energize Phase A on stepper motor.
Loosen track 00 switch mounting brac.ket.
C.
Adjust track 00 switch position, by moving its mounting bracket, in
direction as shown by arrow, until switch is just activated.
D.
Observe a high signal at TP8 with oscilloscope. Step to track 01.
Signal level at TP8 should switch from high to low. If transition
from high to low does not occur, readjust track 00 switch position.
E.
Step to track 00. Signal level at TP8 should switch from low to high.
F.
Readjust track 00 switch position to transfer both open and closed
states between track 00 and track 01, then secure mounting bracket
of track 00 switch.
5-14
Advertisement
Table of Contents
