Quantum Q2000 User Manual
ounRlum
OEM
MANUAL
Q2000
8" Media Fixed Disk Drive
QUANTUM
CORPORATION
2150 Bering Drive
San Jose,
CA.
95131
(408)
262·1100
Publication
PIN
81·40184
PREFACE
This manual describes the
mechanical characteristics
electrical
of
the Q2000
and
Series Rigid Disk Drive required by
customers
device.
It
purchase
contains timing,
it
as
an.
electrical
OEM
and
who
mechanical specifications, and recommended
circuitry
host
controller
necessary
and
data
to
interface
separator.
it
to
a
TABLE OF CONTENTS
1.0
2.0
3.0
Introduction
1.1
1.2
1.2.1
1.2.2
1.2.3
1.2.4
Functional Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1
2.2
2.2.1
2.2.2
2.3
2.4
2.5
2.5.1
2.5.2
2.5.3
2.6
Functional Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1
3.2
3.3
3.4
3.5
3.6
..........
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Specification Summary .
Physical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Reliability Specifications
Performance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Functional Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
General Qperatlons
Read/Write
Transducer
Main PCB. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Drive Mechanism
Read/Write Heads
Head
Positioning System
Rotary Torque Motor Actuator
Optical Track Position Encoder
Temperature Compensation Servo. . . . . . . . . . . . . . . . . . . . . 6
Air Filtration System
Power Sequencing
Drive Selection
Track Accessing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Head
Selection. . . . . .
Read
Operation. . .
Write Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
'. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
..
. . . .
..
. . . .
..
. . .
..
.. .. . ..
............................
.................................
and
Control Electronics. . . . . . . . . . . . . . . . . . . . 5
PCB
...........
...................................
and
Disks
................................
..
. • . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
.........•....................
..
.. . ..
. . . . . . . . • . . . . . . . . . . . . . . . . 5
.........................
............................
.................•......
.......................
. . . . . . . . . . . . . .
. . . . . . . . .
...
. . . . . . . . . . . .
..
. . . . . . . . . . . . . . . . . .
. . . 2
. . . . . . . 9
3
5
6
6
6
6
6
8
10
10
10
4.0
5.0
Interface Lines
Signal Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1
5.1.1
5.1.2
5.1.3
5.1.3.1
5.1.3.2
5.1.4
5.1.5
5.1.6
5.1.7
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.3
5.3.1
5.3.3
5.4
Control Input
Drive Select 1 through 4 . . .
Direction
Step..
Normal Step
Buffered Step
Head
Write Gate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reduced Write Current. . . . . .
Rezero..
Output
Track
Index.
Ready
Write Fault.
Seek
Data Transfer Lines
MFM
Timing Clock. . . . . . . • . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . .
Select Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
and
Pin
Assignments. . . . . . . . . . . . . . . . . . . . . . . . . .
Lines..
In
.........
. . . . .
..
Mode
Mode.................................
Select
000
Complete
Write
2°,
2
. .
..
. .
Lines.
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.... . .. . ....
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. . ... ...
Date....................................
. . . . . . . . . . . . . . . .
..
. . .
..
. . . . .
..
. . . . . . . .
. . .
..
. . . .
..
. . . .
...
...
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1
and
22
,
.. . ..
....
. . . . . . .
. . . . . . .
...
. . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..............
..
.. . ..
.. . ..
. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
...
.. ..
. • . . .
. .
..
. . . . . . . . .
..
. . . . .
..
. .
...
. . . . . . .
. . . .
...
...
. . . . . . . . . .
..
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
....
. . .
..
. . . .
. . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . .
..
..
..
. . . . . . .
...
. . . . .
. . . . .
..
..
. . .
.. . 18
. . .
. .
11
11
11
11
12
12
12
12
12
18
18
18
19
19
19
19
19
20'
20
20
20
II
6.0 General Timing Requirements
..........•....................
23
7.0 Power Interface. . . . . . .
7.1
7.2
AC
Power
DC
Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.0 Physical Outline . . . . . .
..
. . . . . . . . . . . . . . . . .
.................
..
..
. . . . . . . . . . . . . . . . . . .
..
. . . . . . . . . .
~........................
..
. . . . . . . . . . . .
..
. . . .
9.0 Physical Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10.0
11.0
9.1
9.2
9.3
9.4
Q2000
10.1
10.1.1
10.1.1
10.1.3
10.1.4
10.2
Installation Instruction
11.1
11.2
11.3
11.4
11.5
11.5.1
11.5.2
11.6
J1/P1 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J2/P2 Connector. . . . . . . . . . . . . . . . . . . . . . . . .
.. . ..
. . . . . .
J5/P5 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J4/P4 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Track
Format.
. . .
..
. . .
...
..
. . . . . . . . . . . .
Gap Length Calculations. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gap 1
.............................................
Gap2.............................................
G·ap 3 .............................................
Gap 4
..............................•..............
Write Precompensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.....................................
Required
Unpacking
Tools..
. . . . . . . . . . . . . . . . . . .
Instructions.
. . . . . . .
..
. . . .
..
. . . . . . . . . . . . . .
...
. . . . . . . . . . . . .
Motor Locking Clip Disengagement. . . . . . . . . . . . . . . . . . . .
Actuator Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Drive Options
Jumper Options (Main
......................................
PCB)
..........................
Cut Trace Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Line Termination. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25
25
26
27
27
29
29
29
29
31
31
32
32
32
32
32
35
35
35
35
35
36
36
36
36
12.0 Shipping Instructions
12.1
12.1
12.3
Actuator
Motor Locking Clip Engagement. . . . . . . . . . . . . . . . . . . .
Packaging
Appendix A - Definition
........ ~ . . . . . . .
Lock.
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................
of
Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
..
. . . . . . . . . .
..
. .
..
' . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . .
Appendix B - Media Defects and Errors. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix C - Ordering Information
iii
................................
..
36
36
.36
~6
39
43
45
Figure
LIST OF ILLUSTRATIONS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
Q2000 Series Rigid Disk Drive
Servo Information Location
Head Positioning Mechanism
Air Filtration System
Typical Multiple Drive Connection
Normal
Buffered
Control Signal Driver/Receiver Combination
Index Timing
Data Transfer Line Driver/Receiver
MFM Write Data Timing
MFM Read Data Timing
General Control Timing Reqirements
Q2000 Mounting Dimensions
Mechanical Dimensions and Connector Location
J1
J2 Connector Dimensions
J5 Connector
J4 Connector
Track Format
Motor
Actuator
PCB Jumper Locations
Typical Quantum Disk Drive Organization and Terminology
Data Area and Landing
Step Mode Timing
Step Mode Timing
.............................................
Connector Dimensions
............................................
............................................
............................................
Locking Clip Location
Lock
............................................
......................................
....................................
Zone
..............................
................................
..............................
..........................
.................................
................................
..................
..........................
...................................
...................................
........................
...............................
.............
.................................
.................................
...............................
...............................
.....
.
v
.
6
.
7
.
8
.
13
13
.
.
15
.
18
.
19
.
20
.
20
.
21
.
23
.
27
.
28
.
29
.
29
.
29
.
29
.
32
.
35
.
35
.
37
.
41
.
41
fA
IB
"
III
IV
V
VI
VII
VIII
IX
X
XI
LIST OF TABLES
JlIP1
J2/P2 Connector Pin Assignment
P5·DC Connector Pin Assignment
P4·AC Connector Pin Assignment
Interface and Power Connections
J2
Head Select Decode
AC Power Requirements
DC
Write Precompensation
Product Selection
Voltage and Frequency Conversion Information
Connector Pin Assignment
Interface Connection
Power Requirements
Index
...................................
......................................
...................................
...................................
...................................
.................................•..
...........................
...........................
...........................
...........................
...........................
...............
.
14
.
14
.
15
.
15
.
16
.
17
.
18
.
25
.
26
.
33
45
.
45
iv
Quantum's
Shugart
new
Q2000
Associates
8-inch
SA1000.
fixed
disk
drive
compatible
with
industry
standard
Figure
1.
v
Q2000 Series Rigid Disk Drive
1.0 INTRODUCTION
1.1
General
The
Quantum
random access storage device
three, or
as
storage media. Each disk surface employs
one movable head
tracks. The
are
Q2010, Q2020. Q2030, and Q2040
one, two, three, or
tively. The
of
storage accessed by 2 movable heads.
The
Q2020 had 21.33 megabyte capacity,
the
Q2030
the
Q2040
4,
6 and 8 movable heads respectively. Low
cost and drive
through the
tuator
mechanical construction and electronic control
maintenance throughout the
drive.
design. The inherent
allows operation
Description
Series 2000 Disk Drive
with
four
non-removable
to
access the
four
models
four
Q2010 provides 10.66 megabytes
has
32.00 megabyte capacity and
has
42.67 megabyte capacity
reliability
use
of
a unique positioning ac-
with
8"
of
the Q2000 series
disk platters respec-
are achieved
simplicity
minimal
life
is
one, two,
rigid disks
512
data
with
of
of
the
a
with
Mechanical and contamination
for
the heads, actuator, and disks
ed by
an
impact
aluminum enclosure. A self-contained recirculation system supplies clean air through a
0.3 micron
allowing pressure equalization
air
without
Q2000
The
with
an
actuator
shipping protection. In addition, the heads
are positioned in a landing and shipping
zone on the disk surfaces which
track
511.
The heads are always positioned
in this zone when power
the heads never rest upon any area
disk surface where data
power up, the heads
area
until
the disk
for
the heads
An external data separator
provide
precompensation, a crystal
oscillator, and address mark
detecting. Quantum's
may
trollers, however, integrate these functions
into the
disk drive interface
MFM
be
used
controller
resistant plastic and
filter
with
another absolute
contamination.
Series
Disk Drive
lock and a spindle
is
do
not
is
rotating fast enough
to
fly.
encoding/decoding, write
Q2200 data separator.
for
these fUnctions.
design. The Q2000 fixed
is
similar
protection
is
with
ambient
is
also supplied
lock
is
inside
is
removed
of
written. Upon
move
from
is
required
controlled
writing
to
and
Most
the Shugart
provid-
filter
for
so
that
the
this
to
write
con-
1
8"
floppy
SA1000 series disk drive interface. The
Q2000 series disk
same
requirements
Key Features:
drive and a superset
drive
form
factor
and power supply voltage
as
8"
floppy
is
designed
drives.
of
Shugart's
with
the
Depth
Weight = 17 Ibs.
HEAT DISSIPATION
=
= 14.25 in.
235
BTU/HR.
(362.0mm)
(7.7Kg)
TYP
(70 Watts)
Storage Capacity
•
megabytes
Winchester design
•
Same physical size and mounting
•
8"
floppy
Uses
•
8"
floppy
0
Proprietary, rotary, high resolution,
quiet, head-position actuator
4.34M bits/second transfer rate
•
Shugart SA1000 interface compatible
•
Microprocessor controlled temperature
•
compensation servo
1.2
SPECIFICATION SUMMARY
1.2.1
Physical Specifications
ENVIRONMENTAL LIMITS
Ambient
= 50°
Relative
=
8%
Maximum
drives
the same
and SA1000 drives
temperature
to
115°F (10°
Humidity
to
80%
wet
of
D.C.
bulb
10,
20,
reliability
voltages
to
46°C)
= 78° non-condensing
30,
as
or
40
as
AC
POWER REQUIREMENTS
SO/60Hz
100/115VAC Installations =
90-127V
200/230VAC Installations =
180-253V
DC
VOLTAGE REQUIREMENTS
+24VDC±10%
+
-5VDC±5%
optional)
MECHANICAL DIMENSIONS
Height = 4.50 in.
Width
±0.5Hz
at
1.0A Typical
at
O.5A
Typical
1.25A Typical
5VDC ± 5% 1.01 Typical
(-7
to
O.2A
Typical
(114.3mm)
= 8.55 in.
(217.2mm)
2
-16VDC
1.2.2 Reliability Specification
MTBF: 8,000 POH typical usage
PM:
not
required
MTTR:
Component
Error
Soft read errors: 1 per 10
Hard read errors: 1 pet
Seek
30
minutes
life:
5 years
Rates
10
12
10
errors: 1 per 106 seeks
bits read
bits read
1.2.3 Performance specifications
Q2010
Capacity
Unformated
Per
drive
Per
surface
Per
track
Formatted (MFM)
Per
drive
Per
surface
Per
track
Per
sector
Sectors/TK
Transfer Rate
Access Time
TK
to
TK
Average
Maximum
Avg. Latency
10.66Mb
5.33Mb
10.40Kb
8.4OMb
4.20Mb
8.20Kb
256
Bytes
32
4.34Mbits/sec
15
ms
50
ms
100
ms
10
ms
1.2.3 Functional Specifications
Rotational speed
Recording Density
Flux Density
Track Density
Cylinders
Tracks 1024
R/W Heads
Disks
Index
3000
6600
6600
345
512
1
1
RPM
bpi
fci
tpi
2
Q2020
21.33Mb
5.33Mb
10.4OKb
16.80Mb
4.20Mb
8.20Kb
256
Bytes
32
4.34Mbits/sec
ms
15
55
ms
100
ms
10
ms
3000
RPM
6600 bpi
6600
fci
345
tpi
512
2048
4
2
1
Q2030
32.00Mb
5.33Mb
10.40Kb
25.20Mb
4.20Mb
8.20Kb
256
Bytes
32
4.34Mbits/sec
15
ms
60
ms
100
ms
10
ms
3000
RPM
6600 bpi
6600 fci
345
tpi
512
3072
6
3
1
Q2040
42.66Mb
5.33Mb
10.4OMb
33.60Mb
4.20Mb
8.20Mb
256 Bytes
32
4.34Mbits/sec
15
ms
65
ms
100
ms
10
ms
3000
RPM
6600 bpi
6600 fci
345
tpi
512
4096
8
4
1
and higher disk capacity
Shugart Associates
mat and interface compatibility.
Rotational speed, recording, flux and track
differ
from
densities
comodate Quantum track position servo
SA1000
SA1000
values
while retaining
and
to
SA1400
ac-
for-
3
2.0
FUNCTIONAL CHARACTERISTICS
2.1
General Operation
The
Series
2000 fixed disk drive consists
read/write and
write
heads, head positioning mechanism,
media, and air
components perform the
tions:
• Interpret and generate control signals
• Position the heads over the selected
track
compensate
track location
•
Read
• Provide a contamination free environ-
ment around the media
• Perform diagnostics on the head posi-
tioning and servo systems
2.2
Read/Write
control
filteration
with
appropriate corrections
and
write
electronics, read/
system. These
following
for
thermal effects on
data
And
Control Electronics
of
func-
to
The electronics
on
two
printed
PCB
and the Transducer
2.2.1
The Transducer
circuits:
• Coarse servo transducer detector
•
• AGC
• Head select diode matrix
Transducer
circuit
Raw
sensors
2.2.2 Control
The main
circuits:
• Index
• Head positioning
• Microprocessor
servo control
for
the drive are packaged
circuit
boards, the control
PCB
PCB
contains the
track 0 detector
circuit
for
servo and track 0
PCB
PCB
contains the
detector
circuit
for
as
well
actuator
PCB.
following
circuit
following
predrivers
diagnostics and fine
as
step buffers.
• Read/write amplifier/drivers
• Head select circuits
• Drive select
circuit
5
Drive ready
•
•
Write
• Power on reset
• Track 0
2.3
Drive
The spindle rotates at 3000 rpm through a
belt
drive
from
60Hz power
the
motor
operation can be
change.
2.4
The recording media
magnetic oxide coated on
diameter aluminum substrate. This
lubricated coating formulation, together
with
chester type
contact
2.5
The head positioning system consists
three
actuator,
temperature compensation servo.
2.5.1
drive
Read/Write
the
low
start/stop operation.
Head
major
optical
Rotary
Actuator
circuit
fault
detection
indicator
circuit
circuit
circuit
Mechanism
an
AC
motor. Either
is
accomodated
pulley and belt. 220/230VAC
utilized
Head
is
load force/low
flying
heads
Positioning
elements: rotary torque
track position encoder, and
Torque
by
changing
by a
motor
And
Disks
a lubricated
an
8 inch
mass
permit
reliable
System
Motor
(Fig. 3)
50
thin
Win-
motor
or
of
2.5.2
The
ven technology
photo
photodiode sensors. The encoder components are located inside the bubble
the scale attached
tuator
ten times the track density
product.
2.5.3
The temperature compensation, (fine) servo
obtains position feedback
disk surface
track location coding
the last inter-record gap and the index pulse.
This information
troller
the drive during this servo operation.
patibility
reducing the disk rotational speed by
This servo method places no restrictions on
format
to
Optical
optical
etched scale,
arm. This system
Track
track
position encoder
utilizing
Temperature
50
times each second. This
is
or host since
is
maintained
and allows
other comparable
platter
Position
a highly reliable
an
LED
to
the lowermost ac-
is
Encoder
light
accurate
utilized
Compensation
directly
is
embedded between
transparent
writing
with
competitive
to
is
inhibited by
like drives
capacities equal
is
a pro-
source and
with
to
over
in this
Servo
from
the
the con-
Com-
by
4%.
units.
SERVO
INFORMATION
The read/white heads are mounted on
counterbalanced arms attached
of
the roatry
tion
applies a pure torque
balance system maximizes bearing
leads
to
imum vibration resistance.
motor
The
sisting
pieces, a single plane moving coil and
bearings. This system
motors and its performance matches many
voice
coil
torque
high mechanical
is
of
simple construction con-
of
a ring magnet,
actuator
systems.
motor. This configura-
two
is
faster than stepper
to
to
the rotor. The
stability
flat
plate pole
and max-
the hub
life
and
two
PHYSICAL
INDEX
Figure
2.
Servo Information Location
INDEX TO
INTERFACE
6
OPTICAL
TRANSDUCER
TRANSDUCER
PCB
ACTUATOR
ARM
ROTOR
(2
COIL
PHASE)
HEAD
COUNTERBALANCE
Figure
CRASH
STOP
3.
Head Positioning Mechanism
TOP
PIECE
POLE
BonOM
PIECE
POLE
7
2.8
Air
Filtration System
(Fig.
4)
The disk(s) and read/write heads are
enclosed in a
and a
plastic bubble. The
integral recirculatory air system
solute (0.3
environment. A separate
mounted in the bubble
pressure area in the system
pressure equalization
without
module
micron)
contamination.
filter
with
consisting
module
with
to
maintain a clean
absolute
at
the lowest
to
allow
the ambient air
of
filter
fully
a casting
uses
an
an ab-
is
BREATHER
FILTER
Figure
4.
8
RECIRCULATION
FILTER
Air Filtration System
3.0 FUNCTIONAL OPERATIONS
3.1
Power Sequencing
No power sequencing
Q2000
is
normal rotational speed. Upon attaining
90%
will
and
quence. The recalibrate sequence
1.
2.
3.
series
drive. Upon power up, seeking
inhibited until the disk
of
the normal
be presented
the drive
Seek
Seek
Determine the offset value and store
in memory.
will
to
track
to
track 508.
is
necessary
is
at
speed
to
initiate a recalibrate
the
the controller interface
with
90%
of
READY
is:
O.
the
its
signal
se-
4. Repeat steps 2 and 3 for tracks 509,
510, and 511.
5.
Seek
to
track 448.
6. . Determine the difference between the
offset required and the offset determined
difference value in memory.
7.
Repeat steps 5 and 6
320,256,192,128,64,
for
track 508. Store this
for
tracks 384,
and
O.
it
This procedure
each with its own thermal compensation
value.
These
revolution
time
tracking and adjustment
drift. The initial recalibrate sequence takes
approximately
"SEEK
this time.
COMPLETE"
has
established eight zones,
values will
of
the disk thereby providing real
3 seconds
be
updated with each
for
to
complete and
will
be
false during
thermal
3.2 Drive Selection
Drive selection occurs when one
drive select lines
appropriately jumpered
put
signals and gate
controller.
3.3 Track Acce
Read/write head positioning
by:
a)
Deactivating write gate
b)
Activating the appropriate drive select
line
is
activated.
output
••
lng
will
of
the 4
Only
the drive
respond
signals
is
to
to
accomplished
in-
the
9
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