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(B-3)
Check and adjustment procedure (SKA3 method)
(1)
Connect t h e
SKA3
r e f e r r i n g t o
i t e m
3-2-4
and set t h e F D
PWR
switch t o
t h e PSA s i d e .
( 2 )
I n s t a l l a work d i s k .
( 3 ) S t a r t t h e s p i n d l e motor by key " 5 " .
(MON i n d i c a t o r t u r n s o n ) .
( 4 ) Execute d r i v e
select
by key
"0".
(DSO i n d i c a t o r t u r n s o n ) .
( 5 ) Key i n
"CO"
and confirm t h a t t h e
TRACK
i n d i c a t o r becomes
"00".
(RECALIBRATE)
(61
Key i n
" C l " .
(SEEK
TMAX)
(7)
Key i n
"DD".
(ASYMMETRY)
( 8 )
Write
1 F and r e a d o p e r a t i o n s a r e r e p e a t e d .
Asynmetry v a l u e s o f s i d e
0
and s i d e 1 heads a r e i n d i c a t e d on t h e D A T A
0
and D A T A 1 i n d i c a t o r s ,
XXXX
( n s ) s u c c e s s i v e l y a f t e r each c y c l e
of
o p e r a t i o n .
D A T A
0
i n d i c a t e s a v a l u e of s i d e
0
head while
DATA
1
i n d i c a t e s a v a l u e of s i d e 1 head.
The i n i t i a l d i g i t shows "E" which
has no r e l a t i o n t o t h i s i t e m .
(9) Confirm t h a t t h e both average v a l u e s
are
w i t h i n t h e following range.
Innermost t r a c k 1F asymmetry, FD-SSBWFR: 700nsec, Max.
FD-SSGR: 350nsec,
Max.
(10) Key i n "F".
(STOP)
(11) I f t h e value i n
i t e m (9) i s o u t of t h e s p e c i f i e d range, a d j u s t according
t o the
f o l l o w i n g procedure.
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3437
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