Bally 5000 Plus, Руководство пользователя

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8 . R E EL OPT I C BOARD
C i r cu i t D e s c r i pt i on
The opt i c s e n so r s ( S 1 -S6 ) a r e
con t i nuous l y ON . Vcc
p a s s e s
t h r ough t he p a c k a g e o f 5 r e s i s t o r s
( S I P 1 ) t o t he em i t t e r ( E ) o f S 1 -S 5 .
Vcc passes t h r ough R 1 t o E o f S6 .
Vcc p a s s e s t h r oug h t he package o f 5
b i a s i ng
r e s i s t o r s ( S I P 2 ) t o t he
d e t e c t o r ( D ) o f S 1 -S 5 . Vcc p a s s e s
t h r ough R 2 t o D o f S6 .
When t he code r i ng b l ocks t he E ,
t he opt i c sensor sends a l og i c H I GH
s i gna l t h r ough J 1 p i ns 1 -6 t o t he
r ee l con t r o l boa r d . An open ve i n
on t he code r i ng a l l ows t he E t o
r ea c h t he 0 caus i ng a l og i c LOW
s i gna l to be s e n t t h r ough J 1 .
Troub l eshoot i ng
T h e f i r s t s t e p I n t r oub l e s hoo t i ng
t he r e e l sensor boa r d I s t he v i sua l
I nspec t i on .
Fo l l ow t h i s check l i s t .
1 . Make su r e t he opt i cs a r e c l ean
and c l ea r o f any obs t r uc t i on s .
2 . Check t he ou t pu t s o f t he
de t e c t o r . Make s u r e t he l og i c
s t a t es c h ange f r om H I GH t o LOW
and LOW t o H I GH .
3 . I nspect t he code r i n g wa t c h i ng
t h a t t he open a n d c l os e d v e i ns
go t h r ough t he o p t i cs p r e c i se l y .
4 .
I nspect t he code r i ng f o r any
c r a c k s o r c h i ps .
5 . Check t ha t t he boa r d I s secured
f i rm l y .
6 . Check t h a t t he r ubbe r g r omme t s
a r e p r es e n t o n t he s t ep p e r mo t o r
s h a f t s
8-4
NOTE S