M 3 4 2 5   P L U S    MINISCRIBE

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                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/HH              Cylinders     615|     |     |
Capacity form/unform    20/   21 MB        Heads           4|     |     |
Seek time   / track  55.0/15.0 ms          Sector/track   17|     |     |
Controller           MFM / ST412           Precompensation   128
Cache/Buffer               KB              Landing Zone
Data transfer rate    0.625 MB/S int       Bytes/Sector      512
                      0.625 MB/S ext
Recording method     MFM                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         4 50    |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle          21.5 W     Shock        g                 |
       seek               W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h      20000
                                Warranty Month
Lift/Lock/Park     NO           Certificates                                  

**********************************************************************
                        L   A   Y   O   U   T
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MINISC.  3425P/3438P/3650/3675  PRODUCT DESCRIPTION

  +-------------------------------------------------------+
  |                                                       |XX Power
  |                                                       |XX
  |                                                       |
  |                                                       |XX
  |                                                       |XX Control
  |                                                       |XX Cable
  |                                                       |XX J1
  |                                                       |XX
  |                                                       |XX
  |                                                       |XX
  |                                               DS0+-+  |
  |                                               DS1| |  |XX
  |                                               DS2| |  |XX
  |                                               DS3| |  |XX
  |                                               JP3| |  |XX Data
  |                                +RP1------+    JP2| |  |XX Cable
  |                                +---------+    JP1+-+  |XX J2
  +-------------------------------------------------------+



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                      J   U   M   P   E   R   S
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MINISC.  3425P/3438P/3650/3675  PRODUCT DESCRIPTION

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

 Drive Select
 ------------
 +-----------------+---------+-------+-------+-------+
 |                 |   DS0   | DS1   | DS2   | DS3   |
 +-----------------+---------+-------+-------+-------+
 |Drive Select 0   |  CLOSED | OPEN  | OPEN  | OPEN  |
 +-----------------+---------+-------+-------+-------+
 |Drive Select 1   |   OPEN  | CLOSED| OPEN  | OPEN  |
 +-----------------+---------+-------+-------+-------+
 |Drive Select 2   |   OPEN  | OPEN  | CLOSED| OPEN  |
 +-----------------+---------+-------+-------+-------+
 |Drive Select 3   |   OPEN  | OPEN  | OPEN  | CLOSED|
 +-----------------+---------+-------+-------+-------+


 Drive Cabling
 -------------
 If you are connecting the drive with a straight (non-twisted) 34 pin
 control cable, verify that the drive select jumper is on DS0. If you
 are using a twisted 34 pin control cable (5 wire twist), move the
 drive select jumper to DS1.


 Verify that both the 20 pin data cable and the 34 pin control cable
 are connected to pin 1 at the drive connectors and pin 1 of the
 controller board connector.

 Note: The colored edge of both ribbon cables represents pin 1.

 If the drive will be the secondary device of a two-drive setup re-
 move terminating resistor RP1.



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
MINISC.  3425P/3438P/3650/3675  PRODUCT DESCRIPTION

 Formatting Guidelines
 ---------------------
 Before a hard disk drive can be used, 3 steps must be completed:

 1. The drive must be low-level formatted to establish communications
    with the disk drive and controller board.

 2. The drive must be partitioned into one or more logical drives. Use
    the fdisk programm from DOS versions 3.3 or higher or partioning
    software like Disk Manager or Speedstor.

 3. The drive must be high-level formatted to prepare it for the
    operating system installation. Use the DOS format command or Disk
    Manager/Speedstor software.


 XT 8086/8088 Installation
 -------------------------
 Use the utilities from any 8 bit controller board to low-lwvel format
 the drive. Typical routinetis to use the DOS debug command to address
 these utilities. If the low-level format program of the controller
 asks for step pulse rate or control byte values, use the controller
 default values.


 AT 80286/80386 Installation
 ---------------------------
 Use the MiniScribe version of Ontrack Disk Manager software or the
 Universal version of Speedstor software of the entire formatting
 process.