Quantum Q250 Technical Reference Manual page 52

Q200 series intelligent disk drives
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'ES:
UNLESS OTHERWISE SPECIFIED.
THIS SCHEMATIC APPLIES TO ASSEMBLY 20-22008
OF THE SAME REVISION LEVEL.
ALL RESISTDR VALUES ARE IN OHMS,
ALL CAPACITOR VALUES ARE IN MICROFARADS,
ALL INDUCTOR VALUES ARE IN MICROHENRIES.
R29, 100 ARE NOT INSTALLED IN THIS ASSEMBLY.
SHORTING PLUG OPTIONS ARE SHOWN AS FOLLOWS:
1'0 o-.!.
OPEN CONNECTION
4-oL
SHORTING PLUG INSTALLED
I.
e.
OP8455
OP8464
DAC0832
EL2017
LM358A
LM339
7406
HA13426
TMG CTLR
A07820
3046
MC34072AP
8031
DATA CTLR
27256
4416
5080
74LS365A
LM358A
74HCli
75453
ose
220 ohm/
330 ohm
iIOOK. ohm
74LS112
POWER CONNECTI ONS
REF
5 V
12 V
GROUND
REF.
PIN
Ul
20
NONE
10. 19
Jl
01
U2
NONE
9
17.20
02
U3
19
20
3,8
U28
03
04
.~
U4
NONE
20
10
05
U5
NONE
8
4
06
- -
U6
3
NONE
12
07
U7
14
NONE
7
OB
U8
NONE
1
5.7
09
U9
12.22
NONE
1.11
10
U10
7.20
NONE
10, 13
II
Ul1
NONE
NONE' NONE
12
U12
NONE
8
4
13
U13
40
NONE
20
14
8. 17.25.33
3.13.20.
U14
50. 58. 6.8.
NONE
28. 38. 45.
75. 86. 100
53, 63. 73.
80,88
U15
28
NONE
14
15
1----
16
17
U16
18
U17
9
NONE
1.18
19
U18
1.12. 17, 23
20
U19
20, 49. 65
NONE
35, 46.52.
21
7. 61. 62. 64
U20
16
NONE
8
22
U21
NONE
8
4
23
U23
14
NONE
7
24
U24
8
U26
25
NONE
4
U25
11, 14
NONE
I
7
U31
I
U32
NONE
'NONE
1
U38
U39
U40
I
NONE
NONE
U41
U29
16
NONE
8
CONNECTOR PIN ASSIGNMENTS
SIGNAL NAME
PAGE
REF
PIN
SIGNAL NAME
PAGE
REF
PIN
SIGNAL NAME
PAGE
REF.
PIN
SIGNAL NAME
PAGE
GNO
-DBO
GNO
-OBI
GNO
-DB2
GNO
-OB3
GNO
-DB4
GNO
-OB5
GND
-086
GND
-087
GND
-OBP
GND
GND
GNO
GNO
GND
GND
N/C
TERMPWR
-.-~
3R-
3R
JI
26
J2
01
12 V DC
IL
J4
01
ACT COIL2
~
3R
27
GND
3R
02
12 V RT
IL
02
ACT COlli
3R
28
_
..
".
':3R
lL
-
GND
03
5 V RTN
03
FIL 12 V
...
_-
3R
29
GND
3R
04
5 V DC
IL
04
GNO
3R~
30
-
. -
GNO
3R
05
'BUF WR DATA
..
_.-
3R
31
GNO
3R
06
+WR UNSAFE
.---
.-
-~
3R
32
-ATN
3R
07
GNO
-
..
-
3R
33
GND
3R
08
FIL 5 V
_.
. __ ..
-
3R
34
GND
3R
REF.
PIN
SIGNAL NAME
PAGE
09
+BUF HSI
-_
..
.-.--.-.-
3A
35
GND
3A
J3
01
HALL GND
2R
10
+BUF HS2
- -
3R
36
-BSY
3R
02
HALL 1+
2L
11
ROX
--~--
3R
37
GND
3A
03
HALL 1-
2L
12
+BUF HSO
_.
---
3R
38
-ACK
3R
04
HALL 2+
2L
13
WR CURRENT
..
- - -
3R
39
GND
3A
05
HALL 2-
2L
14
ROY
- -
3Fl
-_. -
...
-
40
-RST
3R
06
HALL 3+
2L
15
GND
- - - - - -
3R
41
GND
3A
07
HALL 3-
2L
16
-8UF WR GATE
-_
......
.--
3A
42
-MS6
3R
08
HALL 12 V
2R
-~
-
- -
3R
43
GNO
3R
09
COIL A
2R
REF.
PIN
SIGNAL NAME
- - -
3R
44
-SEL
3A
10
COIL B
2A
J6
01
LED AETURN
45
• __ 0.
-3fi
3R
GND
11
COIL C
2R
02
LED SOURCE
3R
46
-C/O
3R
03
LED RETUAN
-
3R
47
GND
3R
. -
3R
48
-REG
3A
- -
3A
49
GNO
--3A
50
-I/O
3A
.~-
L11
FIL 12 V
J2
12 V DC
~
::
"
01
~
........
--_~-----<-_----------
12 V
: :
BEAD
- C 3 B .
CB • 28. 37. 64-66.
l.J!!0~0
_ _ _ _ _ ..,-_ _ _
~14_05_. _49_._~
_ _
-+-___
---,T
.1
75. 91. 93.
12 V RTN
5 V
DC
5 V RTN
GND
10
J2
L5
Li2
4.7
J4
08
FIL 5 V
:=L
J~
04
.~_-J"'L-
__
.~
_ _ _
~
_ _ _
~_-+-
__
5 V
BEAD
C46
22
C44
. 01
C3. 19. 25. 33. 34. 47, 4B. 50
.1
51.54.55.67. 6B. 69 .
~
07
15
GND
Fi 1e:
B022008A
2R
2R
IR
IR
3R
3L
lR
IR
3R
3R
2L
3R
2R
3A
lR
3R
PAGE
3R
3R
3R
Drwng:
E.M
Page 01 of 03
REV.
F
Oat.:
04/8/B7
REF.
PIN
SIGNAL NAME
PAGE
J5
01
C AGC
2L
02
8URST PEAK
3R
03
SET HYST
3L
04
OET REF
2L
05
-WEDGE
3R
06
GND
lL
07
5 V
IL
OB
12 V
IL
09
12 V
IL
10
5 V
lL
11
GNO
lL
12
N/C
13
+ENCDDED DATA
3R
14
+DATA LOCK
3R
15
N/C
16
+TEST AD CLK
3A
MUST CONF(lHM
i
~
MATERIAL
i
~
~
~
~
I
CASE DEPTH
'"
HARDNESS
:>
~
SURfACE
0-
TREATMENT
TO ENGINEERING SPEC
TOLERANCE UNLESS
OTHE RWISE NOTED
LINEAR
. XX
".XXX
ANGULAR-
~8~~~RS
IOUTSIDE
MAX
B".""
IINSIDE
MAX
Figure 3-6
Sheet 1
Quantum
TITLE
SCHEMATIC, Q200 PCB8
DETAIL I
I
RELEASEDFORASSEMBLY
DESIGN
I
I
J D
APPRO
I
I SHE ET
I
OF
2>
I
SCALE
80-22008
IREV
NONE

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