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Hard Drive: QUANTUM: Q-2020 17MB 8,0"/FH MFM ST412




Q - 2 0 2 0    QUANTUM
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 8"/FH                 Cylinders     512|     |     |
Capacity form/unform    17/   21 MB        Heads           4|     |     |
Seek time   / track  60.0/16.0 ms          Sector/track   32|     |     |
Controller           MFM / ST412           Precompensation   256
Cache/Buffer               KB              Landing Zone      513
Data transfer rate    0.434 MB/S int       Bytes/Sector      256
                            MB/S ext
Recording method     MFM                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/24 V       Temperature *C        10 46    |    -40 66
Power: sleep              W     Humidity     %         8 80    |      1 95
       standby            W     Altitude    km    -0.305  3.048| -0.305 12.192
       idle               W     Shock        g         1       |     15
       seek               W     Rotation   RPM      3000
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit   24
                                MTBF         h       8000
                                Warranty Month
Lift/Lock/Park     NO           Certificates     CSA,UL478                    

Layout

QUANTUM Q2000 PRODUCT DESCRIPTION OEM MANUAL 40-30011 REV. C 12/83

                     +---------------------------------------+
                     | +-J6               Minus   *-5V       |XX J5
                     | | |                Voltage *          |XX DC
                     | | |                Select  *-15V++J4  |
                     | +-+          Floppy Write       ++   50XX
                     |              Data Termination__+------*XX
                     |                              +-+ A+-+ |XX
                     |                              | DA4| | |XX J1
                     |                     +--------+ DS3| | |XX
  +------------------+            Terminator--------+ DS2| | |XX
  |+-+  * GND                                         DS1+-+ |XX
  || |                                           Re-Zero **C |XX
  || |                                           Select  **B 2XX
  || |                                                       |
  || |J3                                                    20XX
  || |                                       Radial Seek H** |XX J2
  || |                                       Complete    D** 2XX
  |+-+                                       Select          +--+
  +-------------------------------------------------------------+

Jumpers

QUANTUM Q2000 PRODUCT DESCRIPTION OEM MANUAL 40-30011 REV. C 12/83

Jumper Setting
==============

Drive Select
------------
Five jumpers are provided for logical drive number assignment. DS1,
DS2, DS3, DS4 cause the drive to be selected when the active drive
select line matches the installed jumper. Jumper A, when installed,
causes the drive to be selected constantly. The Quantum part number
for the jumper plug is 22-10036.

   +-------+----------------------------+
   |Drive  |        Jumper              |
   |Select |   1      2      3      4   |
   +-------+-------+------+------+------+
   |  1    | CLOSED|OPEN  |OPEN  |OPEN  |
   +-------+-------+------+------+------+
   |  2    | OPEN  |CLOSED|OPEN  |OPEN  |
   +-------+-------+------+------+------+
   |  3    | OPEN  |OPEN  |CLOSED|OPEN  |
   +-------+-------+------+------+------+
   |  4    | OPEN  |OPEN  |OPEN  |CLOSED|
   +-------+-------+------+------+------+

Control Cable Termination
-------------------------
If the Model Q2000 is the last drive at the end of the control signal
cable, a 220/330 ohm terminator pack must be installed. The
terminator must be removed if the drive is not at the end of a string
of drives. The Quantum part number for the terminator pack is
13-12302.

Minus Power Selection
---------------------
The Model Q2000 requires - 5 VDC but will regulate greater negative
voltages between -7 VDC and -16VDC. A jumper plug is supplied at
Control PCB (Minus Voltage Select) that allows the user too select
which negative voltage will be supplied to the drive. The drive is
shipped with the jumper in the -15 VDC position. If the user is
suppyling -5 VDC, the jumper should be moved to the -5V position.

CAUTION
Damage to components that use -5VDC can occur if the jumper is in the
-5V position and greater negative voltages are applied to the drive.

RE-ZERO Select
--------------
The Model Q2000 can be re-calibrated to track 000 by driving a single
control line. If use of this re-zero function is desired, jumper C
should be installed, this allow J1 pin 6 to be used to initiate the
re-zero function. Pulsing the Rezero line will cause the micropro-
cessor to reset, forcing the drive into its power up recalibration
sequence which takes 10 seconds typically.

Radial Seek Complete Select
---------------------------
The Model Q2000 can provide the output signal - Seek Complete on the
data cable J2. If use of this signal is desired, Jumper D should be
installed, this allows seek complete to be output at data cable J2
pin 3. This signal is not gated with drive select.

Floppy write data termination
-----------------------------
From the factory, this option allows for termination of the floppy
write data line (J1 connector Pin 38) when the drive is the last
drive of a Daisy Chain. The wire from J1 PIN 38 to the terminator
must be cut if termination is not desired.

Install

QUANTUM Q2000 PRODUCT DESCRIPTION OEM MANUAL 40-30011 REV. C 12/83

Notes on Installation
=====================

Space Requirements
------------------
The Series 2000 drives are shipped with a face plate installed.

Mounting
--------
The Series 2000 drive may be mounted in any orientation and has two
mounting brackets with integral shock mounts for this purpose.

CAUTION
The base casting is very close to the cabinet walls. Mounting screws
lengths must be chosen so that no more than .125" (3.175) of the
screw is available to enter the cabinet mounting holes. This length
will allow full use of the mounting hole threads and avoid damaging
or placing unwanted stress on the base casting. To avoid stripping
the mounting hole threads the maximum torque applied to the mounting
screws must not exceed 18 inch/pounds.

Mounting holes: 8-32 UNC-2B, 16 places.

 AC Power
 -------
            J2                  J1         J5 DC Power
       +--XXXXXXXXX----XXXXXXXXXXXXXXXXXX--XXXXX-+
       |                                         |
       |                                         |
       |                         J4 AC Power     |(AC motor drives
       +------------------------XXXXXX-----------+ only)
       |                                         |
       +-----------------------------------------+

AC power and frame ground are supplied to the Series 2000 through a
3 pin connector. The pin housing (J4) is mounted in the drive and is
AMP P/N 1-480701-0 with pins AMP P/N 350687-1 and 350654-1 (gnd pin).
The recommended mating connector (P4) is AMP socket P/N 1-480700-0
with pins P/N 350536-1.

The disk drive is shipped with DC ground (base casting) and AC ground
(drive motor) connected together with a ground strap located on the
drive motor and base casting. AC and DC grounds may be separated by
removing the ground wire connected between the AC motor and the base
casting. Additionally the bubble clamps and base casting must be
isolated from the drive cabinet by insulating paper or other means.

                                60 Hz               50 Hz
 +-1----3-+  Pin    110V (Standard) 208/230V   100V       220V
 + X xx X +   1     90-127V         180-253V   90-127V    180/253V
 +---2----+   2     FRAME GND       FRAME GND  FRAME GND  FRAME GND
              3     90-127RTN       180-253V   90-127RTN  180-253V

DC Power Connector
------------------
DC power connector (J5) is a 6 pin AMP Mate-N-Lok connector P/N
380999-0 mounted on the solder side of the PCB. The recommended
mating connector (P5) is AMP P/N 1-408270 utilizing AMP pins P/N
60619-1. J5 pins are labeled on J5 connector.

CAUTION
Before applying DC power insure correct -5/-15 jumper configuration.

 +------+         Voltage (Nominal)
 |+-++-+| Pin 1   +24v
 ||2++1|| Pin 2   +24v RTN
 ||4++3|| Pin 3   -5v(Opt. -7v to -16v)RTN
 ||6||5|| Pin 4   -5v(Opt. -7v to 16v)
 |+-++-+| Pin 5   +5v
 +------+ Pin 6   +5v RTN

Note
All D.C. power and signal grounds are connected through the control
PCB to the base casting.

Interface Connectors
--------------------
Two interface cable connections are required by the Model Q2000; a
control cable (J1) and a signal or data cable (J2).

Connection to J1 is through a 50 pin PCB edge connector. The pins are
numbered 1 through 50 with the even pins located on the component
side of the PCB and odd pins located on the solder side of the PCB.
Pin 2 is located on the end of the PCB connector closest to the J2
connector and is labeled. A key slot is provided between pins 4 and
6. The recommended mating connector for P1 is Scotchflex ribbon
connector P/N 3415-0001.

Connection to J2 is through a 20 pin PCB edge connector. The pins are
numbered 1 through 20 with the even pins located on the component
side of the PCB. The recommended mating connector for P2 is Scotch-
flex ribbon connector P/N 3461-0001. A key slot is provided between
pins 4 and 6.

Ventilation
-----------
The Model Q2000 operates without a cooling fan provided the ambient
air temperature does not exceed 115*F (46*C). Any user designed
cabinet should provide adequate air circulation so that this maximum
air temperature is not exceeded.

Introduction
------------
The Model Q2000 has two interface connectors: one for control signals
which are TTL in nature and one for data transfer signals which are
differential in nature.

The control signals are both input, those originating external to the
drive and output, those originating within the drive. The control
signals could also be divided into two types: those intended to be
multiplexed in a multi-drive system and those intended to do the
multiplexing. The control signals that do the multiplexing are DRIVE
SELECT 1, DRIVE SELECT 2, DRIVE SELECT 3, and DRIVE SELECT 4 which
are input signals. The multiplexed signals are: STEP, DIRECTION,
HEAD SELECT, WRITE GATE, REDUCE WRITE CURRENT, and REZERO input
signals, TRACK 000, INDEX, READY, WRITE FAULT and SEEK COMPLETE
output signals. Up to four drives may be connected in a daisy-chain
configuration using a single control signal cable. The last drive in
the chain requires the terminator to be installed at PCB.

The input lines have the following electrical specifications:

Logic "0" = True = 0.0 VDC to 0.4 VDC at I in = 40MA (MAX) = LO
Logic "1" = False = 2.5 VDC to 5.25 VDC at I in = 1 MA (OPEN) = HI

The output lines are driven with a TTL open collector output stage
capable of sinking a maximum of 40 MA at the logic "0" or TRUE state
with a maximum voltage of 0.4 VDC measured at the driver. When the
line driver is in the logic "1" or FALSE state driver transistor is
off and the collector cutoff current is 250 microamperes.

Features

QUANTUM Q2000 PRODUCT DESCRIPTION OEM MANUAL 40-30011 REV. C 12/83

General Description
===================
Quantum Model Q2000 Disk Drive is a random access storage device
using two, three, or four non-removable 8" rigid disk platters as
storage media.

- Storage capacity of 10, 20, 30 or 40 megabytes

- Winchester design reliability

- Same physical size and mounting as 8" floppy drives

 - Actuator and spindle locks to hold heads on a landing zone outside
   the data area during shipping

- Propritary, high resolution, rotary head position actuator

- 4.34 Mbits/second transfer rate

- Microprocessor controlled temperature compensation servo

- Uses the same DC voltages and currents as 8" floppy drives

 Seek Time
 ---------
 +---------------------------+-----+-----+-----+-----+
 |                           |Q2010|Q2020|Q2030|Q2040|
 +---------------------------+-----+-----+-----+-----+
 |Track-to-Track  msec. typ. | 16  | 16  | 16  | 16  |
 +---------------------------+-----+-----+-----+-----+
 |Average         msec. typ. | 56  | 60  | 64  | 67  |
 +---------------------------+-----+-----+-----+-----+
 |Full Stroke     msec. typ. | 93  |100  |108  |115  |
 +---------------------------+-----+-----+-----+-----+
 |Latency         msec. avg. | 10  | 10  | 10  | 10  |
 +---------------------------+-----+-----+-----+-----+

Media Quality Criteria
----------------------
Each drive that Quantum ships will meet or exceed the following
standards of media quality:

1. Cylinder zero (0) will be free of defect areas.

2. No surface will have more than 12 defect areas.

3. No surface will have more than 4 tracks with mutiple defect areas.

Quantum defines a defect area as an area equal to or less than 16
bits in length. Hence a defcet area 17 bits in length counts as 2
defect areas and a defect area of 16 bits in length counts as 1
defect area.













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