Table of Contents
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A
B
c
o
E
F
G
H
CN3
TO HDD
CN5
TO HDD
CN4
TO HDD
HDD CONTROL
HDD1 DATA
HDD2 DATA
Rf04Ff042+
liiifM2
:S~Sf+
1
7
19
~
RESERVED
..... --i~"O
RESERVED
~
SPARE
'--~7'O
8
RESEAYED
9
KEY( Pin removl!d)
10
NC
11
NC
"'--""ll0
1
+5
Rf041
74LS20
< 00 )
Open Oral n
Test Post
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I nterna( Pull up
JI
Schmitt Trigger Input
=:[Jr- ::[)-
:0-
-(Jx>-
7438
74LS08
74LS132
74LS19
r -
I
I
I
I
LI
l
GND
+~
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P.
-
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-
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(Wf04Ff04)
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NC:
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6
I
(INDEX)
~
21
INDEX
es
10
.A_
11
12K
~%
1/4W
2016
(loons)
VCC
GND
Fi5CS
t:>~:
NC
LNCIi
P
NC
töMri
P:~
NC
u
7
4
~
1
4
3
6F
~
--ll
WDCS
<u>
H1il
<u>'mj
HAI
4
~
WAUP
~C
6
WAUPL !-L"---~-"'~<P::"--------1-------'"
HS3
~4
HS2 4
HSI
4
HSO 4
4
+5
l,-_......;4;.;',.-I S07
I
61
~I
41
31
2/1
1 •
O.
HD7
6
5
4
3
2
1
iöi
row
&ALE'
11
71
1
1~~~4
SAU
7/1
3.
OS
~4i9=;::==:t:~R~'6~~-:;:-;~l
I I
<OD>HRST
1:
4
+5
1/1
+5
0/1
YCCI
f-U...
m •
YCC2 f-i'L-
CORRD
C32
ERR
0.1"
ALE
GNDI
I-#-
fi
GND2 f....U-
r
-;::::====1~:R,~W(Cl0/l
~~
WG
<U> J2W
r},-,
J 1
.----
ll.C.S
<U>J1R~~
I--
Rll
<U>
HA~
r
f~lgi~~~DEX nrrns~
J3
:~y
<u>ii'i7i
1-T~i-2
-+--+--0
69
DCHG STEP
~
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t--t-++-I+I-I+---!.!....IOSRC
IDCS16 ~~~
,
WD11COOC
- 22
DSEN "
+~
22PTcH
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3.6~K
Rll
1%
P20
21 NC
21
22 NC
22
U
NC
23
is
NC RA10
24
.R[
~~ ~t7t:jc~clfREA~D~l>=t==:l
f
27 I-
R13
R14
Pg~~~4'7~KX2
14
Ht--uTKIlJ' n n",,---,
+
~
15
32
NC
1633NC
lR15
17
~4
NC
• 4.7K
TEm
Pi-LJ--....----++++-+----c
WAUP
0
A~.~
W1l
07
H 7
6
~
4.
3
4
b
a,t:
2=:i=~
I U
XTAL2
L::r:
XTAL 1
.---------'4:af04R
NC
2~C
PSEN
NC '
PROG
0
+~5
4 0 YCC
4H
26 VDD
C20
0""~39
Tl
GND
:
[ " 7
EA
R26
100
~%
V4W
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ca 22p
~~
f
~10f04HZ
:;=
CRI
7_
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R
21
100
1%
Rll
f-__.....
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487
1.2K
R17
HK
R18
l.lK
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1/4W
1/4W
1/4W
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r1/:rJ..:l.. 3
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4
2
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R23
CI815Y
CI815Y
4.7,,~t23
1/4:'1'5YQ'3
~~~.
,'55138
01
Jlr!
iiffiiW
10
~
5 0 : 1 1 I ' A
B .
18
HDO~
10
1
4::
11
1
A
B
g
1 ' 7
A
4J
B 1
4
4
14
:
B
12
1~
jA
~'A:"
~
01
~ DIR
~
l:f!--
IRQ10
3
~
11
4
Il
~
I~
~
~
0-;9
8-~~l-+-Ih
10
~
11
DACK6
II
D~~~'
:~
DRQ7
1~
H
~
17
GND
11
loc~g~
COHA2l-1_ _----.
6
3
~
4
4
~
3
6
2
7
1
8
0 1 r
+ 10CHRDY
10
AEN
11
SAU
12
1&
13
17
'4
16
1~
1
~
16
14
17
13
18
12
19
11
20
1
~
~l
~
J
l..ft-
!
I~~!;~~~~~:; 6 ~ - ! J : ~ ~ ~ 6 ~ ~ ~ ~ ~ ~ ~ S ~ A ~ 2 : ~ 1 ~
GND
~
7
RESET DRV
+~YDC
+
~
IRQ9
4
f'
-~YDC
~
CI6
100" 16Y
DRQ2
6
-12YDC
7
7_
OWS
!
+
12
V
DC
C>---?-,.----+-+l---<II..-,-
+
12
~Si 8:~~!~:;~~:t:::±tlCl~f
47"
16V
OAm
1~
D~~~~
:~
DRQl
18
REFRESH
19
C
LK
20
IRQ7
21
6
II
~
23
4
24
3
H
OACK2
26
T/C
27
BA
LE o---k~8:--I---I--I-l--l-.
B~~g o-~3~0~+-+f--I+l----
+
~
GND
~
36Pi n Card Edge
62P in Card Edge
I-
o
...J
l/l
I-
o
...J
l/l
ZN
Oz
j:u
a.
o
o
I-
Z~
Oz
i=u
a.
o
o
I-
4
1
3
5
2
+~
ll9
2211\.1%
6
R20
33ll\.l%
l!~
11~
~
EQUITY 11+/111+, EPSON PC AX/AX2
WHDC BOARD
UNIT NO. Y12720300000jY1272031 0000/
Y12720300001 jY1272031 0001
NOTE:
Y12720300000 and Y12720310000 uses WD1015PL- 27 in location "4H".
Y12720300001 and Y12720310001 uses WD1015PL-27B in location "4H".
A-18
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