Tandy 1000 SL Technical Reference Manual page 472

3-4-13. Check and Adjustment o f Track
00
S e n s o r
( A )
Equipment
(1)
C r o s s p o i n t s c r e w d r i v e r , M3
( 2 )
Work disk
(3) Alignment d i s k
(4) SKA o r u s e r ' s system
(5)
O s c i l l o s c o p e o r d i g i t a l v o l t m e t e r ( n o t r e q u i r e d when SKA3 i s used)
(6) Locking p a i n t
(B-1) Check and a d j u s t m e n t p r o c e d u r e ( G e n e r a l method)
Note: Check and a d j u s t m e n t o f t h e t r a c k
00
s e n s o r u s i n g t h i s g e n e r a l
method is n o t so p r e c i s e .
I t
i s recommended t o u s e an
S K A
method
as much as p o s s i b l e .
(1) Connect a n o s c i l l o s c o p e o r d i g i t a l v o l t m e t e r t o TP3 (Track
00
s e n s o r )
on t h e PCBA
ME'D
c o n t r o l .
O s c i l l o s c o p e range: DC mode, 1V
( 2 ) I n s t a l l
a
work d i s k and
s t a r t
t h e s p i n d l e motor.
( 3 ) Execute t h e head l o a d i n g
( 4 ) Confirm t h a t t h e v o l t a g e
a t TP3
i s w i t h i n t h e f o l l o w i n g range when t h e
head i s s e t
t o t r a c k 00.
Track
00
p o s i t i o n TP3 v o l t a g e : 3.7V. Min.
(5) Turn t h e p o w e r o f f o f t h e FDD and t h e n t u r n i t on a g a i n a t t h e t r a c k
00
p o s i t i o n . Confirm t h a t t h e head c a r r i a g e once moves t o i n n e r t r a c k and
t h e n it r e t u r n s
t o
t r a c k
00
p o s i t i o n ( a u t o - r e c a l i b r a t i o n ) .
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