Troub l eshoot i ng ( cont ' d )
I /O BOARD SYUPTOM/ FLOWCHART TAB L E
NOTE : T h i s t ab l e I s t r ue when t he o t h e r p r i n t e d c i r cu i t boa r d s I n
t he m a c h i ne a r e good .
SYMPTOM
FLOWCHAR T
When t he
fo l l ow i ng occur s i mu l t aneous l y :
No I np u t sw i t c hes f u n c t i on i ng
I /O Decode Log i c
No co i ns acce p t ed
No
ou t pu t
l i g h t s f u n c t i on i ng
No I nput s f u n c t i on i ng
( e . g .
co i n
I n sw i t c h )
R e a d De code Log i c
No
ou t pu t s f u n c t i on i ng
( e . g . l i g h t s ,
me t e r s )
Wr i t e Decode Log i c
1
& 2
On l y
1
I nput por t not
f u n c t i on i ng
R e a d Decode Log i c
On l y
1
even ou t pu t po r t not
f u n c t i on i ng
W r I t e
Decode
Log i c
2
On l y
1
odd ou t pu t por t not
f u n c t i on i ng
Wr
I
t e
Decode
Log i c
1
S i ng l e
I nput sw i t c h
no t
func t i on i ng
I n put Por t
B i t s
F a I l u r e
No co i ns acce p t ed
I nput
Por t
8 I t s
F a i l u r e
No
h a nd l e r e s ponse
I nput
Por t
8 I t s
F a i l u r e
S i ng l e
ou t pu t
I I g h t
not
func t i on i ng
O u t p u t
Por t
0 , 1 , &
3
8 I t
S i ng l e
so l eno i d not
f u n c t i on i ng
Ou t pu t
Po r t 2 , 4 , &
5
B i t
S i ng l e me t e r o r
b i l l
t r anspo r t
Ou t pu t
Por t
2 , 4 , &
5
B i t
not
func t i on i ng
S i ng l e r e l ay no t f u n c t i on i ng
Ou t pu t Por t
2 , 4 , & 5 B i t
- .- -
- -
-
-
-
-
-
-
-
- -
- - - -------
-
- -
Ree l s not s p i nn i ng p rope r l y
I /O Ree l
M e c h a n i sm
Log i c
P I CK 3 not f u n c t i on i ng
Por t D F au l t
P r og r ess i ve s not
f u n c t i on i ng
Wr I t e Decode
Log i c 2
4 .
I /O BOARD
-
--
---
F a I l u r e
F a i l u r e
F a i l u r e
F a l l u r e
NOTE : T h e f l owch a r t s I so l a t e t he I C , b u t t he f au l t cou l d be t h e I C o r any o f t he
a ssoc i a t e d d i sc r e t e componen t s .
4-29
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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