C i r cu i t Descr i pt i on ( cont ' d )
Reset
The R ESET s i gn a l f r om
J2
norma l l y I s a l og i c H I GH .
RESET bu t t on on t he
MPU
I s
t he s i gn a l goes LOW .
p i n
34
When t he
p r es s e d ,
The LOW s i g n a l goes t o p i n
1
o f
U 1 1 , U 2 1 ,
U 3 1 , U41 ,
a n d
U 5 1
a n d
r e se t s a l I out put s t o a l og i c LOW .
T h i s d i sa b l es t he r ee l s so t he y a r e
no t l ocked I n t o a n y s t a t e .
Tr
o
ub l e
s
hoot i ng
P hys i ca l Boa r d I nspec t i on
The f i r s t s t ep I n
t he
ree l
con t ro l
phys I c a I I nspe c t I on .
t roub l e s hoo t i ng
boa r d
I s
t he
Fo l l ow t h i s check l i s t .
1 .
Check
t h a t e a c h
p roper l y s e a t e d
po l a r i t y .
conn e c t o r
I s
a n d obser v i ng
2 . Check f o r bur ned f o l I s .
3 .
Check f o r b e n t p i ns .
4 . Check
t r a c e s .
for s h o r t e d a n d
open
5 . Fee l componen t s for hea t
caused
by a n I ns i de s h o r t .
9 . R E E L CONTROL BOARD
NOT E S
9- 1 3
Summary of Contents for 5000 Plus
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Page 125: ...3 MPU BOARD Troub l eshoot i ng cont d CLOCK D I AGRAM Vee 3 68...
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Page 242: ...HOPPER CONTROL BOARD Boar d Assemb l y AS 3556 1 3 o 0 o Q5 r 7 4...
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Page 361: ...1 5 APPEND I CES APPEND I X 4 Co i n Mechan i sm I nc 1 5 6...
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Page 383: ...APPEND I X 6 Ser v i ce Su i l e t i ns 1 5 APP END I CES 1 5 1 2...
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