Bally 5000 Plus, Manual

Page: 225 / 388

Connector Loca t i on and Use ( con t ' d )
J 3
J 23
I s a s e r i a l 1 2 V R S 2 3 2 por t
for t he HHU .
J 33 conne c t s t o t he keypad for
game o p t i on i ng . JW4 j umpe r mus t
b e I n t h e " T E ST " pos i t i on t o
op t i on a g ame . JW4 must b e I n
t he " P I CK 3 " pos i t i on t o o p t i on
a P i ck 3 game .
J 1 2 conne c t s t o t he message
cen t e r 40 c ha r ac t e r d i sp l ay .
P 26 and P 27
hopper con t r o l
J 27 .
connec t s
boa r d
t o
J 26
t h e
and
J 1 0 conne c t s t o t he hoppe r . Two
ou t p u t s f rom t he hopper con t ro l
boa r d a c t i va t e t he DC mot o r .
Two I nput s t o t he I /O boa r d
mon i t o r s t he l eve l sw i t c h and
co i n ou t sw i t c h .
J 35 conne c t s t o t he doo r h i nge
sw i t c h . Dur i ng powe r up , J 3 5
p i n 1 sends a s i g na l t o J 3 p i n 3
( I /O connec t o r ) an d t hen on to
t he I /O boa r d at P2 p i n 3B .
Dur i ng powe r down , J 35 p i n 1
sends a s i gn a l t o J 5 p i n 23A
( MPU connec t o r ) and t hen on to
t he MPU boa r d at P2 p i n 2 3A .
T h e b a ck p l a ne J 3 conne c t s w i t h t he
I /O boa r d P 2 . J 3 I s a 96 p i n
conne c t o r wh i ch g r oups t h e s i gna l s
to sma I I d i s t r i bu t i on connec t o r s .
J 1 5 conne c t s t o t he keysw l t c h
for I npu t s .
J 39 connec t s t o t he P I CK 3 boa r d
for
send i ng d a t a . T h e LCD
STROBE , Por t 2B , and Por t 1 3 a r e
t i e d I n to t h i s conne c t o r .
J 1 7 conne c t s t o t he BALLY I I nk
o r doub l e p r og r e s s i ve .
5 . BACKPLANE BOARD
NOT E S
5-7