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Hard Drive: MINISCRIBE: M6128 110MB 5.25"/FH RLL ST506




M 6 1 2 8    MINISCRIBE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    1024|     |     |
Capacity form/unform   110/  128 MB        Heads           8|     |     |
Seek time   / track  28.0/ 6.0 ms          Sector/track   26|     |     |
Controller           RLL / ST506           Precompensation   512
Cache/Buffer               KB              Landing Zone
Data transfer rate    0.938 MB/S int       Bytes/Sector      512
                      0.938 MB/S ext
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 45    |    -40 60
Power: sleep              W     Humidity     %         8 80    |      8 80
       standby            W     Altitude    km    -0.061  3.048|        12.192
       idle               W     Shock        g         2       |     35
       seek          26.1 W     Rotation   RPM      3600
       read/write    14.1 W     Acoustic   dBA        45
       spin-up            W     ECC        Bit
                                MTBF         h      25000
                                Warranty Month
Lift/Lock/Park     YES          Certificates     CSA,FCC,IEC380,TUV,UL478,VDE 

Layout

MINISC. 6032/6053/6079/6085/6128 PRODUCT MANUAL P/N 1011 REV. G

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                         |XX J2
  |                                                         |XX
  |                                                         |X1
  |                                                         |
  |                                                         |
  |                                                         |
  |                                                SEL +--+4|XX
  |                                   Terminator       |  |3|XX J1
  |                                  14---------8      |  |2|XX
  |                                   |         |      +--+1|XX
  |                                   1---------7           |XX
  |                         +--+        RP20                |XX
  |                       J9+--+                            |X1
  |                                                         |
  |                                                         |X1 Power
  |                                                         |XX J3
  +---------------------------------------------------------+

Jumpers

MINISC. 6032/6053/6079/6085/6128 PRODUCT MANUAL P/N 1011 REV. G

Jumper setting
==============

SEL Drive Select
-----------------
As shipped, the jumper is positioned for Drive Select 1 (pins 1 to 8
shorted).

       +------+                  +------+
       | xxxx | Drive ID 1       | 1  8 | Drive ID 2
       | 2  7 |                  | xxxx |
       | 3  6 |                  | 3  6 |
       | 4  5 |                  | 4  5 |
       +------+                  +------+

       +------+                  +------+
       | 1  8 | Drive ID 3       | 1  8 | Drive ID 4
       | 2  7 |                  | 2  7 |
       | xxxx |                  | 3  6 |
       | 4  5 |                  | xxxx |
       +------+                  +------+

J9 Drive Exercise Option
-------------------------
As shipped, the Exerciser Mode jumper J9 is open for normal
operation. When J9 is shorted with a jumper, the drive will be
offline to the system and enter a seek exercise routione.

      OPEN     Normal Operation
      CLOSED   Seek Exercise

The microprocessor performs a series of "wake up" diagnostics upon
application of power. If an error is detected, the microprocessor
will flash an error code by blinking the activity LED. Some errors
may not allow the drive to return to the program until power is
cycled.

If no errors are detected, the microprocessor checks the configura-
tion of the diagnostic Jumper J9. If installed, the drive enters a
seek exercise routine. If removed (normal operation) the drive will
remain in an idle state waiting for control signals. If an error is
detected during the exercise routine an error code will be flashed by
blinking the activity LED.

Note: The drive select jumper can be used to initiate the J9 exer-
cise.

Install

MINISC. 6032/6053/6079/6085/6128 PRODUCT MANUAL P/N 1011 REV. G

Notes on installation
=====================

Drive mounting
--------------

     horizontally             vertically
   +-----------------+   +--+             +--+ +------------------+
   |                 |   |  +-----+ +-----+  | |                  | x
   |                 |   |  |     | |     |  | x+----------------+x
 +-+-----------------+-+ |  |     | |     |  | ||x              x||
 +---------------------+ |  |     | |     |  | ||  x          x  ||
                         |  |     | |     |  | ||    x      x    ||
                         |  |     | |     |  | ||      x  x      ||
 +---------------------+ |  +-----+ +-----+  | ||       xx       ||
 +-+-----------------+-+ +--+             +--+ ||     x    x     ||
   |                 |                         ||   x        x   ||
   |                 |                         || x            x ||
   +-----------------+                         |x                x|
                                              x++----------------++x

The drive may be mounted in any attitude except on its end and must
not exceed an inclined pitch of five degrees.

Mechanically isolated mounting points
-------------------------------------
Four side mounting and four base mounting points are provided to the
customer. Each mounting point is mechanically isolated from the
drive. Additionally, four side mounting points are provided which are
compatible with a full height floppy disk drive.

Mounting Configuration
----------------------
The Miniscribe 6000 series of full height drives are designed to be
used in applications where the unit may experience shock and
vibration at greater levels than larger and heavier disk drives.

The drive is mounted using 6-32 screws, 1/4 inch maximum penetration.
The customer should allow adequate ventilation to prevent the drive
from exceeding the specified operating environmental temperature.
Excessive operating temperature will reduce MTBF and specified data
reliability.

Cabling
-------
Attach interface cables in the following order: P4, P1, P2, P3, with
Connectors to J4, J1, J2 and J3 respectively. If multiple drives are
to be interconnected, remove the terminator packs in all but the
last drive of the daisy chain.

Cable Interconnection - 4 Drive System
--------------------------------------

       HOST
   +-----------+                                +-----------------+
   |           +---o---Control------------------+P1     Drive 1   |
   |           |   |    +-------Data------------+P2               |
   |           |   |    |             +-Power---+P3  P4    ...    |
   |           |   |    |             |         +-----+-----------+
   |           |   |    |             |    +-Frame----+
   |           |   |    |             |    |    +-----------------+
   |Controller |   o----+-------------+----+----+P1     Drive 2   |
   |           |   |    | +-----------+----+----+P2               |
   |           |   |    | |           o----+----+P3  P4    ...    |
   |           |   |    | |           |    |    +----+------------+
   |           |   |    | |           |    o---------+
   |           |   |    | |           |    |    +-----------------+
   +-----------+   o----+-+-----------+----+----+P1     Drive 3   |
   |           |   |    | | +---------+----+----+P2               |
   |           +---+----+ | |         o----+----+P3  P4    ...    |
   |           +---+------+ |         |    |    +-----+-----------+
   |           |   |        |         |    o----------+
   |Data       +---+--------+         |    |    +-----------------+
   |Separator  |   +------------------+----+----+P1     Drive 4   |
   |           +----------------------+----+----+P2               |
   |           |                      o----+----+P3  P4    XXX    |
   +-----------+                      |    |    +-----+-----------+
                       DC voltages----+    o----------+
                                           |
                       Frame Ground--------+

... = Terminator Pack removed

XXX = Terminator Pack installed

Terminators
-----------
Each drive is shipped with a terminator pack RP 20 to provide the
220/330 ohm termination for the Controller Input Signals. If multiple
drives are configured in a daisy chain configuration, the terminator
pack must be removed from all except the last unit on the daisy
chain.

P1 Control Signal Connector
---------------------------
Connection to P1 is through a 34 pin PCB edge connector. The pins are
numbered 1 through 34 with the odd pins located on the component side
of the Printed Circuit Board. A key slot is provided between pins 4
and 6.

The recommended mating connector (J1) is AMP Ribbon Connector, P/N
88373-3.

P2 Data Signals Connector
-------------------------
Connection to P2 is through a 20 pin edge connector. The pins are
numbered 1 through 20 with the odd pins located on the component side
of the Printed Circuit Board. A key slot is provided between pins 4
and 6.

The recommended mating connector (J2) is AMP Ribbon Connector,
P/N 88373-6.

P3 DC Power Connector
---------------------
DC power connector (P3) is a 4 pin AMP Mate-N-Lock Connector, mounted
on the PCB.

The recommended mating connector (J3) is AMP P/N 1-480424-0 utilizing
AMP pins P/N 350078-4.

Suggested wire size: 18 AWG

       +------------+    1 = +12 Volts DC
       | 4  3  2  1 |    2 = +12 Volts Ground Return
       +------------+    3 = + 5 Volts Ground Return
                         4 = + 5 Volts DC

P4 Frame Ground Connector
-------------------------
Fasten AMP P/N 61761-2.

The recommended mating connector is AMP P/N 62187-1.

If used, the hole in P4 will accommodate a wire size of 18 AWG max.

Electrical Interface
--------------------
The interface to any MiniScribe 6000 can be divided into three
sections, each of which is physically separated: Control Signals,
Data Signals and DC Power.

All control Signals are digital in nature (open collector TTL), and
either provide signals to the drive (input) or signals to the
collector (output). The Data Signals are differential in nature and
provide data either to (write) or from (read) the drive.

The interconnecting cables between the drive and controller may be
flat ribbon or twisted pairs of a length not to exceed 20 feet. The
signal return lines and ground lines for P1 and P2 should be
grounded at the controller.

The voltage return lines of P3 should only be grounded at the power
supply.

Connector P4 is a spade lug connector tied to frame ground.

Features

MINISC. 6032/6053/6079/6085/6128 PRODUCT MANUAL P/N 1011 REV. G

Introduction
------------
The Miniscribe 6000 series of disk drives are full height random
access storage devices of 32, 53, and 85 megabytes (MFM Mode), 79 and
128 megabytes (RLL mode) (unformatted capacities). The drives contain
up to five oxide 5 1/4 inch disks and utilize Whitney Style flexure
technology. With one disk surface dedicated to continuous servo data,
each other surface employs a movable head to service the data tracks.

High performance and high unit reliability are achieved by the utili-
zation of microprocessor control, a linear voice coil, and a closed
loop servo positioning system. The heads, disks, and actuator
assemblies are within a sealed enclosure containing a recirculating
and breather filter to supply clean air and equalized pressure to the
head and disk environment. Quality mechanical construction with a
sophisticated single printed circuit board allows for maintenance
free operation throughout the life of the drive.

The 6000 series uses the industry standard ST506/412 interface. The
6032, 6053, and 6085 MFM models have a 5 megabit per second transfer
rate. The 6079 and 6128 RLL models utilize the 7.5 megabit per
second data transfer rate. The drives also feature power up
diagnostics, buffered seek, a brushless DC spin motor, dedicated
shipping zone and automatic locking actuator.

 Seek time
 ---------
 (Including settling time)   |   6000    |
 ----------------------------+-----------+
 Single Track                |   6 ms    |
 Average                     |  28 ms    |
 Maximum                     |  55 ms    |
 Average Latency             |   8.33 ms |
 ----------------------------+-----------+

Start time (max) 20 seconds from power on to -READY
Stop time (max) 10 seconds from power removal

Reliability and Maintenance
---------------------------
MTBF 25,000 POH (At 25*C Operating Environment)
MTTR 30 minutes
Preventive Maintenance None required
Component Design Life 5 years

Media Defects
-------------
Media defects are physical characteristics of the recording media
resulting in repetitive read errors when a functional drive is
operated within its specified operating conditions.

A single defect is defined as beeing less than two bytes in length. A
multiple defect is defined as up to three contiguous single defects.

During the manufacture/test process, a certification test, consisting
of a media verification, evaluates each drive and identifies the
location of each media defect. These defects are labeled on the
drives flaw map by head and cylinder address, and number of bytes
from index.

Media defects as shipped from MiniScribe:

                                6032  6053  6085  6079  6128
 Maximum defects per drive:      32    53    85    79    128
 Maximum defects per surface:    20    20    20    20    20

These defects may be a combination of single or multiple type
defects.

Cylinder zero shall be error free.

Magnetic Field
--------------
The externally induced magnetic flux density may not exceed 3 Gauss
at the disk surface.

Drive Mechanism
---------------
A brushless DC direct drive motor rotates the spindle a 3600 rpm.
The motor/spindle assembly is dynamically balanced to provide minimal
mechanical runout to the disks. A dynamic brake is used to provide a
fast stop to the spindle motor when power is removed.

Air Filtration System
---------------------
Within the sealed enclosure, a 0.3 micron filter along with a
breather filter provides a clean, equalized pressure environment to
the HDA for the life of the drive.

Head Positioning System
-----------------------
The Read/Write and servo data heads are mounted on a ball bearing
supported linear carriage, positioned by a linear voice coil motor,
and driven by a closed loop servo system. This design allows for an
increase in the number of data tracks. Position reference is made to
tracks recorded on the dedicated servo surface located on the bottom
side of the bottom disk.

Track Zero Detection
--------------------
Track Zero detection utilizes data encoded at the factory on the
servo disk, which is read by the servo head. The servo disk is the
bottom surface of the disk closest to the printed circuit board
(PCB).

Automatic carriage retract and locking
--------------------------------------
When power is removed from the drive, the carriage will automatically
retract and be latched in a non data area located at the inner most
portion of the disk.

Driver/Receiver charateristics
------------------------------
Low state (true): 0.0 to 0.4 VDC, -40ma max.
High state (false): 2.5 to 5.25 VDC, 250 a

Write Precompensation
---------------------
In recording, to optimize data integrity and meet the error rate
specification, write data presented to the controller may need to be
precompensated from cylinder 512 and up. The need for write pre-
compensation may vary with controller manufacturers.













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