M 9 3 8 0 E    MINISCRIBE

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                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    1224|     |     |
Capacity form/unform   329/  382 MB        Heads          15|     |     |
Seek time   / track  18.0/ 3.0 ms          Sector/track   35|     |     |
Controller           ESDI                  Precompensation
Cache/Buffer               KB              Landing Zone
Data transfer rate    1.250 MB/S int       Bytes/Sector      512
                            MB/S ext
Recording method     RLL 2/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 50    |    -40 60
Power: sleep              W     Humidity     %         8 80    |      8 80
       standby            W     Altitude    km    -0.061  3.048|        12.192
       idle          18.0 W     Shock        g         2       |     35
       seek          22.0 W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA        47
       spin-up            W     ECC        Bit
                                MTBF         h      30000
                                Warranty Month
Lift/Lock/Park     YES          Certificates     CSA,FCC,IEC380,UL478,VDE     

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                        L   A   Y   O   U   T
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MINISC.  9230E/9380E  PRODUCT MANUAL P/N 1093 REV. P6, 12/11/1987

            +---------------------------------------+
            |                               3+-+J16 |
            | COMPONENT SIDE                2| |    |
            |                               1+-+    |
            |                                       |
            |                                       |
            |                     +-+J6             |
            |                     | |               |
            |                     +-+               |
            |                                       |
            |                                       |
            |                                       |
            |                                       |
            |                                       |
            |                                ++J7   |
            |                                ++     |
            |                                ++J9   |
            |                                ++ +J10|
            |   J8----------+                   ++  |
            |    +----------+              RP4+ +J11|
            |                                || ++  |
            |                         +-RP17 || +J12|
            |                         | |    || ++  |
            |                         | | J19|| +J13|
            |                         +-+ ++ ++ ++  |
            +XXXX--XXXXXXXXXXXXXXXXXX--XXXXXXXXXXXX-+
             1 J3  1       J1          1  J2
             Power  Control Cable       Data Cable



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                      J   U   M   P   E   R   S
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MINISC.  9230E/9380E  PRODUCT MANUAL P/N 1093 REV. P6, 12/11/1987

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

 J7  Spindle Control Option
 --------------------------
     CLOSED  The 9000E must wait for a start spindle command to start
             the spindle motor.
     OPEN    The drive automatically starts the spindle motor at power
             on.


 J9  Diagnostic Jumper
 ---------------------
     OPEN                   Normal Operation

     INSTALLED before       Cresendo Seek Test
     power up

     INSTALLED before       Random Seek Test
     power up and RE-
     MOVED after the LED
     flashes Microcode Rev
     level

 The microprocessor performs a series of "wake up" diagnostics upon
 application of power. These diagnostics must pass in order for the
 drive to become ready.

 If an error is detected, the drive microprocessor will transmit a
 vendor unique status word consisting of an error code message through
 the interface.

 If no errors are detected, the microprocessor checks the configura-
 tion of the diagnostic jumper J9. If J9 is installed before power up
 or if the Initiate Diagnostic command is initiated the drive enters
 a Diagnostic Seek Test routine. If J9 is not installed or the
 Initiate Diagnostic Command is not initiated, the drive will become
 ready and remain in an Idle state waiting for control signals.

 If an error is detected during wake up or initiated diagnostics an
 error word will be transmitted through the interface as a vendor
 unique status word. Also the error coded message will be flashed out
 through the drive LED.


 J10/J11  Heads
 --------------
 J10 and J11 are factory set!

 The number of fixed heads reported is dependent on drive model and
 the configuration of Jumpers J10 and J11. Model 9230E has 9 (0-8)
 heads and Model 9380E has 15 heads (0-14).


 J12/J13/J19  Sectors
 --------------------
     J19    J12    J13     Sectors          Bytes U      Bytes F
     -----------------------------------------------------------
     CLOSED CLOSED CLOSED  Soft(Controller will select Sector #)
     OPEN   CLOSED OPEN    19                1096         1024
     OPEN   OPEN   CLOSED  36                 578          512
     OPEN   OPEN   OPEN    35 - Hard sector   594          512


 The 9230E and 9380E series can operate in either hard or soft sector
 modes.

 When J19, J13 and J12 are installed, the drive is configured to
 operate in soft sectored mode. ADDRESS MARK GENERATION and DETECTION
 are enabled, and the SECTOR/ADDRESS MARK FOUND interface signal is
 used to report ADDRESS MARK FOUND.

 When J19 is NOT installed, the drive is configured to operate in the
 hard sectored mode. The SECTOR/-ADDRESS MARK FOUND interface signal
 is used to transmit sector pulses to the host controller. The number
 of bytes/sector may be specified using the SET BYTES PER SECTOR
 command or by selecting a default sector configuration with option
 Jumpers J12 and J13. Three fixed sectored and one soft sectored
 format is available.

 For all sector configurations, the configuration response given is as
 follows:

 Minimum Bytes per ISG Field        16 bytes
 ISG Bytes after Index/sector       12 bytes
 Minimum Bytes per PLO Sync Field   14 bytes


 J16  Drive Address
 ------------------
   +----------+-----------------------+
   | Address  |        Jumper J16     |
   |          |   3   |   2   |   1   |
   +----------+-------+-------+-------+
   |No Select | OPEN  | OPEN  | OPEN  |
   |    1     | OPEN  | OPEN  | CLOSED|
   |    2     | OPEN  | CLOSED| OPEN  |
   |    3     | OPEN  | CLOSED| CLOSED|
   |    4     | CLOSED| OPEN  | OPEN  |
   |    5     | CLOSED| OPEN  | CLOSED|
   |    6     | CLOSED| CLOSED| OPEN  |
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+

 Only one drive address jumper is installed on a 9000E drive, and the
 drive is addressed as Drive 1 at the factory.

 Terminator packs RP4 and RP17 provide proper termination for inter-
 face lines. When daisy chaining multiple 9000E drives, the
 terminators are installed only in the last drive on the daisy chain.



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MINISC.  9230E/9380E  PRODUCT MANUAL P/N 1093 REV. P6 12/11/1987

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

 Mounting Orientation
 --------------------
 The MiniScribe 9000E Series uses industry-standard mounting for
 5-1/4" Winchester Disk Drives. The 9000E Series 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 may be mounted in any attitude.

 The 9000E drive is mounted using 6-32 UNC screws 1/4" maximum
 penetration. The customer must allow adequate ventilation to the
 drive to insure reliable operation.

 In as much as the drive frame acts as a heat sink to dissipate heat
 from the unit, the enclosure and mounting structure should be
 designed to allow natural convection of heat around the HDA and
 outer frame. If the enclosure is small or if natural convection is
 restricted, a fan may be required.


 Daisy Chaining the MiniScribe 9000 Drives
 -----------------------------------------
 Up to seven 9000E Series drives may be connected to a single host
 controller/formatter. Control signals at J1 are transmitted via
 standard, daisy-chain interconnection. Data signals at J2 are trans-
 mitted via radially connected data-transfer lines.

 Note: Interface terminators RP4 and RP17 are installed only in the
 last physical drive in the control chain. Maximum number of drives =
 7.


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


 J1 Connector Control Signals
 ----------------------------
 J1 is a 34 pin board edge connector on the drive printed circuit
 board. The signals on this connector control the drive and transfer
 drive status to the host controller. A key slot is provided between
 pins 4 and 6.

 Recommended mating connector: AMP ribbon connector 88373-3, or
 equivalent (key slot between pins 4 and 6).

 Recommended cable: 3M Scotchflex 3365/34 or equivalent.


 J2 Data Transfer Connector
 --------------------------
 J2 is a 20-pin board connector on the printed circuit board. The
 signals on this connector contain read or write data. A key slot is
 provided between pins 4 and 6.

 Recommended mating connector: AMP ribbon connector 88373-6 or
 equivalent.

 Recommended cable: 3M Scotchflex 3365-20, or equivalent (keyslot be-
 tween pins 4 and 6).


 J3  DC Power Connector
 ----------------------
 J3 is a 4-pin keyed connector on the printed circuit board. DC power
 (+5V and +12V) is supplied to the drive via this connector.

 Recommended connector: AMP 350543-1
 Pins:                  AMP pin 350078-4

 Note: 1  Equivalents of the above are permissible
 Note: 2  Suggested wire size: 18 AWG

  +-----J3-----+   pin 1    +12 VDC
  | 4  3  2  1 |   pin 2    +12 Volts Return
  +------------+   pin 3    + 5 Volts Return
                   pin 4    + 5 VDC


 J4  Frame Ground Connector
 --------------------------
 J4 is a fasten-type connection. If wire is used, the hole in J4 will
 accomodate wire size of 18 AWG max.

 Recommended mating connector: AMP pin 61761-2, or equivalent.


 Cable Connection
 ----------------
      HOST
 +---------------+                 +---------------+
 |               +---CONTROL-------XJ1             |
 |               |               +-X               |
 |               |    +-DATA-----+-+J2     Drive #1|
 |               |    |   +------+-+J3  J4         |
 |               |    |   |      | +-----+---------+
 |               |    |   |    +-+-------+
 |               |    |   |    | | +---------------+
 |               |    |   |    | +-XJ1             |
 |               |    |   |    | +-X               |
 |               |    | +-+DATA+-+-+J2     Drive #2|
 | Controller    |    | | o----+-+-+J3  J4         |
 |               |    | | |    | | +----+----------+
 |               |    | | |    o-+------+
 |               |    | | |    | | +-------------+-+ Terminator
 |               |    | | |    | +-XJ1           +-+ (Last Drive only)
 |               |    | | |    |   X               |
 |             1 +----+ |++----+---+J2     Drive #N|
 |             2 +------+|o----+---+J3  J4         |
 |             N +-DATA--+|    |   +-----+---------+
 |               |        |    o---------+
 +---------------+        |    |
                          |    |
     DC VOLTAGES  --------+    |
     (Radial)                  |
     FRAME GROUND -------------+

 Maximum number of drives = 7

 NOTE
 Interface Terminators RP4 and RP17 are installed only in the last
 physical drive in the control chain.


 Electrical Interface
 --------------------
 The MiniScribe 9000E Series is pin and function compatible with the
 serial mode of the Enhanced Small Device Interface (ESDI) for 5-1/4"
 Winchester Disk Drives. In the serial mode, interface signals
 (control, data and status) are transmitted serially via handshaking
 request/acknowledge signals.

 The Enhanced Small Device Interface can be divided into three
 categories, each of which is physically separated:

 a. Control Signals
 b. Data Signals
 c. DC power


 Control Signal Drivers and Receivers
 ------------------------------------
 All control lines are digital in nature (open collector TTL) and
 either provide signals to the drive (input) or signals to the host
 (output).


 The drivers have the following electrical specifications.

 True/Active:     0.0 VDC to 0.4 VDC @ 1 = -48 mA (Max.)
 False/Deactive:  2.5 VDC to 5.25 VDC @ 1 = +250  A (Open Collector)


 Data Signal Drivers and Receivers
 ---------------------------------
 The data transfer signals are differential in nature and provide
 data either to (write) or from (read) the drive.



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                      F   E   A   T   U   R   E  S
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MINISC.  9230E/9380E  PRODUCT MANUAL P/N 1093 REV. P6, 12/11/1987


 Introduction
 ------------
 The MiniScribe 9000E Series of disk drives are low cost, high
 capacity, high performance random access storage devices utilizing
 5 1/4" this film disks as storage media. Each disk surface employs
 one moveable head to access the data tracks. The 9000E Series
 features capacities of 230 and 380 megabytes (unformatted storage
 capacity). The 9000E disk drives utilize advanced 3380 Whitney-type
 head flexures and sliders which allow closer spacing of disks,
 allowing a higher number of disks in a standard 5 1/4" package.


 Seek Time (including settling time)
 -----------------------------------
       +----------------------------------+--------+
       |                                  | 9000E  |
       +----------------------------------+--------+
       |Single Track           msec. max. |   3    |
       +----------------------------------+--------+
       |Average                msec. typ. |  16    |
       |1/3 Stroke Seek time   msec. max. |  17    |
       |Full Stroke Seek time  msec. max. |  35    |
       |Rezero                 msec. max. | 250    |
       +----------------------------------+--------+
       |Latency                msec. avg. |   8.33 |
       +----------------------------------+--------+


 Media Defect Criteria (as shipped from MiniScribe)
 --------------------------------------------------
                             9230E | 9380E
 ----------------------------------+-------
 Maximum Defects*             230  |  380
 2 bytes in length
 Cylinder zero defect free

 *A single defect is defined as being less than 2 bytes long. A
 multiple defect is defined as 2 bytes or longer, or as a track with
 more than 1 single defect.


 Defect List
 -----------
 The 9000E series drives are shipped with a defect list that is
 written in the ESDI Rev. F recommended format.

 The defect list resides on Sector 0 of cylinder 1223 and is repeated
 on cylinder 1215. This allows for redundancy should an error occur on
 the maximum cylinder. The Sector 0 or any surface will contain the
 defects for that surface. The format for the data field portion of
 this sector is 256 bytes with 2 bytes of CRC (x16 = 12 = x5 =1):

  Defect locations are 5 bytes long.

  The start of the actual defect may be off by up to 7 bits due to the
  one byte resolution.

  The end of the defect list for each surface will be indicated by 5
  bytes of ones in the defect location field or the end of the sector.


 Error Message Readout
 ---------------------
 Flashing error codes are displayed through the drive LED by the
 Microprocessor to indicate hardware failures that occur while in the
 diagnostic mode (J9 installed) only. Failures during normal operation
 (connected to the host) will be reported through the ESDI interface.

 Error codes are displayed in a "morse-code" type manner. Flashes or
 bits are interpreted and converted into a hexadecimal error code.
 "Zeros" are indicated by a short (1/2 second) flashing mode. "Ones"
 are indicated by a short (1/2 second) continuous "on" mode. Error
 codes are separated by a one-second LED "off" time. All error codes
 and the revision level are 6 bits long.

 Listed Below are the binary to hexadecimal conversion values:

  00 = 000000   04 = 000100   08 = 001000   0C = 001100
  01 = 000001   05 = 000101   09 = 001001   0D = 001101
  02 = 000010   06 = 000110   0A = 001010   0E = 001110
  03 = 000011   07 = 000111   0B = 001011   0F = 001111

  10 = 010000   14 = 010100   18 = 011000   1C = 011100
  11 = 010001   15 = 010101   19 = 011001   1D = 011101
  12 = 010010   16 = 010110   1A = 011010   1E = 011110
  13 = 010011   17 = 010111   1B = 011011   1F = 011111

  30 = 110000
  31 = 110001
  32 = 110010
  39 = 111001
  3E = 111110

 Message Definitions
 -------------------
 Code 00 - Microprocessor RAM error
 Code 01 - Microprocessor ROM checksum error
 Code 02 - Interface chip diagnostic failure
 Code 03 - Sector counter fault
 Code 04 - Index pulse not detected during spinup
 Code 05 - Spin speed not within 0.5% tolerance
 Code 06 - Loss of fine track during idle mode
 Code 07 - Reserved
 Code 08 - Time out on +End Decel signal (during seek)
 Code 09 - Time out on CYL Pulse (during seek)
 Code 0A - Overshoot (after a seek)
 Code 0B - Time out on fine track (after a seek)
 Code 0C - Track zero signal not detected (after a seek)
 Code 0D - Comparator mismatch (after a seek)
 Code 0E - Comparator mismatch (during a seek)
 Code 0F - Unexpected interrupt from processor
 Code 10 - Time out on non-GB pattern (during a rezero)
 Code 11 - Time out on GB1 pattern (during a rezero)
 Code 12 - Time out on GB2 pattern (during a rezero)
 Code 13 - Seek range error
 Code 14 - Voltage unsafe
 Code 15 - Track offset fault
 Code 16 - Write fault
 Code 17 - Reserved
 Code 18 - Time out on +End Decel sig (during a rezero)
 Code 19 - Time out on CYL Pulse (during a rezero)
 Code 1A - Overshoot (after a rezero)
 Code 1B - Time out on fine track (after a rezero)
 Code 1C - Track 0 signal not detected (after a rezero)
 Code 1D - Comparator mismatch (after a rezero)
 Code 30 - Time out on non-GB pattern (adj)
 Code 31 - Time out on GB1 pattern (adj)
 Code 32 - Time out on GB2 pattern (adj)
 Code 39 - Time out on CYL Pulse (adj)
 Code 3E - Cannot adjust servo


 Reliability and Maintenance
 ---------------------------
 MTBF                     30,000 POH
 MTTR                     30 minutes
 Preventive Maintenance   None
 Component Design Life    5 years


 Magnetic Field
 --------------
 The externally induced magnetic flux density may not exceed 3 Gauss
 as measured at the top of the drive.


 Spindle Drive Mechanism
 -----------------------
 A brushless DC drive motor located inside the spindle/hub assembly
 rotates the disk pack at 3600 RPM. This design allows the disk pack
 to be symmetrically mounted in the unicasting. It provides a more
 even distribution of heat across the disk surfaces and within the HDA
 improving performance under thermal or shock and vibration stresses.
 The disk pack (including spindle, hub, disks, and motor) is
 dynamically balanced prior to installation to insure low vibration
 and servo stability.

 Dynamic braking is employed to quickly stop the drive motor when
 power is removed.


 Air Filtration System
 ---------------------
 The disks and Read/Write heads are assembled in an ultraclean air
 environment (Class 100 or better) and then sealed within the head
 disk assembly.

 Within this sealed HDA a 0.1 micron filter provides constant
 internal air filtration. In addition, a breather filter provides a
 clean, equalized pressure between internal air and ambient to the HDA
 for the life of the drive.


 Automatic carriage retract and locking
 --------------------------------------
 If power is removed from the drive during a normal power down or in
 the event of a power failure, the actuator assembly will automatic-
 ally retract and be locked in a nondata area located at the inner-
 most portion of the disk. The heads will land on and take off from
 this area only.