Bally 5000 Plus, Manual

Page: 240 / 388

7 .
HOPPER CONTROL BOARD
I nt roduc t i on
T h i s s e c t i on cove r s t he hoppe r con t ro l boar d . T h e p a r t s a n d ob j e c t i ves o f t h i s
sec t i on a r e a s fo l l ows :
PARTS
Theo r y of Ope r a t i on
Boa r d Assemb l y
C i r cu i t D e s c r i p t i on
T r oub l e s hoo t i ng
Boa r d S c h ema t i c
OBJ ECT I VE S
Know how t he hop p e r con t r o l boa r d func t i on s
Loc a t e t he compone n t s w i t h p a r t numb e r s
Know how t he v a r i ous c i r cu i t s wo r k
Know how t o t r oub l e s hoo t t he boa r d
Downs i ze d hopp e r con t r o l sc hema t i c f o r r e f e r ence
MOS F ET--me t a l o x i de sem i condu c t o r f i e l d e f f e c t t r ans i s t o r . D r e p r esen t s t he
d r a i n ; G t he g a t e ; S t he sou r c e .
P r eques t l on s
Read t he f o l l ow i ng ques t i ons a n d w r i t e down a n y o t h e r ques t i ons .
1 . How do t he L E O s h e l p t roub l e shoo t t he boa r d ?
2 . Wh a t I s t he pur pose o f r e v e r s i ng t he hoppe r ?
3 . I n wh i ch c l r cu i t ( s ) I s t he MOSF E T used?
4 . I s t h i s boa r d mu l t i - l ay e r ed ?
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