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5.3.3
INDEX sensor position adjustments
1)
Equipment
':E
Tester
CE diskette (DYMEK 502-lD STANDARD DISKETTE)
No.
1
plus screw driver
Oscilloscope
2)
Check procedure
2)-1
Connect
eE
tester to drive (set power off)
2)-2
Load diskette and set Index hole to SPM mark
2)-3
Turn-on power switch
2)-4
Turn-on and select drive
2)-5
Read timing of each waveform at TPB9.
TPB10 under read mode TK02,
using
oscilloscope.
(see figure)
Trigger:
Signal :
EXT - -INDEX (DC, +)
(TPD14)
CHI - TPB9
(AC
)
CH2 - TPB10
(AC,INV) Add
Specification
Adjust.
200~IOO
ps at TK 02
200±200
ps at TK 02
(Side
a)
(Side 1)
~O()+200
)Is at TK02 (Side 0)
Check
200+300 }-Is at TK02
(Side 1)
I
Trigger
-INDEX
- ;
I
Signal
n
TPB9-10
:S1:11~
4!t.
l
(Burst
i' ( i1
i
l
waveform)
"c
.,.
T02
PCA. set screw
FIGURE 6
1
n .
..
'
I
(SOus)
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