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Hitachi MP-1802 Technical Manual page 22

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5 - 7
M P - 1 8 0 2 M D B - A a n d M D B - B P C B S C O N N E C T I 0 N
P i n
N o .
S i g n a l
D a t a D i r e c t i o n
M D B - A e +
M D B - B
E x o l - a n a t i o n
1
I
UNI T SELE CT21
-----------+
D r i v e
s e l e c t
s i g n a l
GND
G R O U N D
3
U N I T S E L E C T 2 O
--+
D r i v e
s e l e c t
s i g n a l
/r
5
I N D E X
O u t p u t s
r L t p u l s e w h e n
i n d e x h o l e i s
d e t e c t e d
a f t e r
d i s k I s
r o t a t i o n
6
GND
<--
GROUN D
7
S TEP
-+
M o v e s h e a d o n e t r a c k
p e r
p u l s e
8
GND
#
G R O U N D
9
1 0
GND
<--:-+
G R O U N D
1 1
W R I T E G A T E
W r i t i n g
i s
p o s s i b l e
w h e n
l H f
1 2
GND
<-+
G R O U N D
1 3
S I D E 1
+
S e l e c t
s i d e
t
h e a d w h e n
r r H f r , s i d e
0 h e a d w h e n
i l L f t .
1 / +
+ 5 V
<-
+ 5 V p o w e r s u p p l y
1 5
W R I T E D A T A
W r i t e
d a t a s i e .
t o t h e
d i s k ( D o u b l e
d 6 n s i t y )
1 6
+ 5 V
€-
+ 5 V p o w e r s u p p l y
1 7
R E A D Y
(-
t r H f r w h e n d i s k
t u r n s
I
n o r m a l l y
I
1 8
+ 5 V
+ 5 V p o w e r s u p p l y
1 g
rna clr o o
<-
r r L r r w h e n h e a d i s
t r a c k
0 0 p o s i t i o n , . .
2 0
+ 5 V
6_
+ 5 V p o w e r s u p p l y
2 1
W R I T E P R O T E C T
(-
r r L r f w h e n w r i - t e
p r o t e c t -
e d d i s k
i s
i n s e r t e d
. . . / 2 0

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Mp-3550