Tandy 1000 SL Technical Reference Manual page 448

Innermost t r a c k 1F asymmetry, FD-55BWFR: 0.7psec, Max.
FD-55GR: 0.35usec, Max.
( 1 2 ) Depress
"4"
key and execute items (9) through (11) f o r s i d e 0 and s i d e
The s i d e i s changed a l t e r n a t e l y by a depression
1 heads respectively.
of "4" key. I f t h e s i d e 1
i s
s e l e c t e d ,
SIDE 1
i n d i c a t o r of t h e SKA
t u r n s on.
(13) I f t h e value i n item (11) or (12)
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 t h e following procedure.
Note: T h i s item
i s
applied only f o r a model with a v a r i a b l e r e s i s t o r f o r
asymmetry adjustment
.
( a ) Adjust t h e v a r i a b l e r e s i s t o r ,
R l
on the
PCBA MFD
c o n t r o l so t h a t t h e
asymmetry takes a small value by keying i n "D4".
(b) Execute t h e operation i n item ( a ) f o r both s i d e s a l t e r n a t e l y by
changing t h e s i d e by key "4". The v a r i a b l e r e s i s t o r s h a l l be so
adjusted t h a t both asynrmetry f o r s i d e 1 and s i d e 0 heads take t h e
minimum value. Refer t o Fig.220 i n item 2-3-2.
(14) I f t h e value i n item (11) o r ( 1 2 )
i s
o u t of t h e s p e c i f i e d range on a
model without v a r i a b l e r e s i s t o r , or i f t h e adjustment i n item (13)
cannot be done s u f f i c i e n t l y , r e f e r t o item (10)
of
"General method".
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3436
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