Tandy 6000 HD, Руководство по обслуживанию

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N O T E
H e a d 1 s h o u ld m e e t th e sam e
to le ra n c e .
11. I f e it h e r H e a d 0 o r H e a d 1 does n o t
m e e t th e to le ra n c e , a d ju s t th e in d e x
sensor.
12. W h e n b o th in d e x m e a s u re m e n ts o n a
d o u b le -s id e d d r iv e o r th e o ne in d e x
m e a s u re m e n t o n a s in g le -s id e d d r iv e
m e e t th e to le ra n c e , c h e c k th e in d e x -
to - d a ta b u r s t o n T r a c k 76.
13. O n a d o u b le -s id e d d r iv e , c h e c k H e a d s 1
a n d 0, th e u p p e r a n d lo w e r heads.
N O T E
I f a n y in d e x m e a s u re m e n t does
n o t m e e t th e to le ra n c e , th e
in d e x se n so r m u s t be a d ju s te d .
Index Sensor Adjustment
1. Loo se n th e in d e x se n s o r’s r e t a in in g
s c re w lo c a te d o n th e u n d e rs id e o f th e
ch a ssis ( F ig u r e 5 -7 ).
2. A d ju s t th e in d e x s e n so r w i t h a f l a t
b la d e s c r e w d r iv e r u n t i l th e in d e x -
to - d a ta b u r s t o c c u rs 2 00
±
100 m ic r o ­
seconds fr o m th e le a d in g edge o f th e
in d e x p u ls e .
3. T ig h te n th e in d e x se n s o r’s r e t a in in g
scre w .
4. R e c h e c k th e in d e x - to - d a ta b u rs ts .
5.8 AZIMUTH CHECK
A z im u t h c h e c k s th e r e a d / w r it e h e a d (s ) r e la ­
t iv e a n g le to th e c e n te r lin e o f th e d is k e tte .
T h e D y s a n 3 6 0 /2 A a lig n m e n t d is k e tte h a s
th re e a z im u t h b u rs ts , w i t h th e f i r s t b u r s t
h a v in g a c c e p ta b le l i m i t s o f 12 m in u te s , th e
second one o f 15 m in u te s , a n d th e t h i r d o ne o f
18 m in u te s . T h e t h i r d b u r s t o f 18 m in u te s
s h o u ld be u se d f o r th e c h e c k .
T h e h e a d (s ) a z im u t h is n o t a d ju s ta b le . I f th e
h e a d (s ) f a i l th e a z im u t h c h e c k , re p la c e th e
m o d u le a s s e m b ly .
FIGURE 5-7
INDEX SENSOR’S RETAINING SCREW
5-8