
1 5 8 7 - 1 3    MICROPOLIS
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    1626|     |     |
Capacity form/unform   579/  663 MB        Heads          13|     |     |
Seek time   / track  16.0/ 4.0 ms          Sector/track   54|     |     |
Controller           SCSI1 SINGLE-ENDED    Precompensation
Cache/Buffer            64 KB LOOK-AHEAD   Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                      4.000 MB/S ext SYNC
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 50    |    -40 65
Power: sleep              W     Humidity     %        10 90    |     10 90
       standby       28.0 W     Altitude    km    -0.061  3.048| -0.305 15.240
       idle               W     Shock        g         2       |     20
       seek          33.0 W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA        45
       spin-up            W     ECC        Bit   48
                                MTBF         h     150000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

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                        L   A   Y   O   U   T
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MICROPL. 1580 SERIES  TECHNICAL MANUAL 104644 REV. A

  +---------------------------------------------------------++-+ J2
  |                                                  +-+W5  || |
  |                                                  +-+    || |ID 2
  |                                                  +-+W4  || |ID 1
  |                                                  +-+    |+-+ID 0
  |       COMPONENT SIDE                               +-+  |XX
  |                                                    | |  |XX
  |                                                  RN9 |  |XX J1
  |                                                    | |  |XX
  |                                                    | |  |XX
  |                                                    +-+  |XX
  |                                                  +----+ |XX
  |                                                  +----+ |XX
  |                                                  W1  W2 |XX
  |                                             +---+       |X1
  |                             Frame Ground    +---W11     |
  |                             Option     +-+W28           |XX Power
  |                                        +-+              |XX J3
  +---------------------------------------------------------+  1






     +--------------------------------------+
     |       +--+J4                         |
     |       +--+                           |
     |                                      |
     |  +--+J5                              |
     |  +--+                                |
     |   J2             J1           J3     |
     |.......... XXXXXXXXXXXXXXXXXX XXXXXXXX|
     +-------+++------------------1--------1+
           ID210                     Power



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
MICROPL. 1580 SERIES  TECHNICAL MANUAL 104644 REV. A

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

 x = Jumpers setting at factory

 Note that only those pages that are differnet from the single-ended
 schematic are shown special.


 Drive Option Selection
 ----------------------
 While jumpers may be located in different locations on the differ-
 ential board, the nomenclature is consistent with the standard SCSI
 board. Board markings will identify each option. For example, when a
 jumper is installed at W2, terminator power is provided by the host
 system via interface cable J1, pin 26.


 If more than one drive is to be installed in a system, remove the
 interface terminator at RN9 from each drive except the last one; and
 configure each drive to a differnet SCSI ID.


 J2  SCSI ID SINGLE-ENDED
 ------------------------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | ID2   | ID1   | ID0   |
   +----------+-------+-------+-------+
   |x   0     | 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|
   +----------+-------+-------+-------+

 Up to eight devices (A host and seven targets) can be attached to
 the SCSI bus. The 1580 Series has three ID jumpers which are used
 to assign one of the eight SCSI ID bits (0 - 7) to the drive.

 In multiple-device systems, each drive must have its own unique ID
 bit.


 J2  SCSI ID DIFFERENTIAL
 ------------------------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | ID2   | ID1   | ID0   |
   +----------+-------+-------+-------+
   |    0     | 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|
   +----------+-------+-------+-------+

 Up to eight devices (ANY combination of host and targets) can be
 attached to the SCSI bus. The 1580 Series has three ID jumpers.
 These three jumpers are used to assign one of the eight SCSI ID bits
 (0 through 7) to the drive.


 J2  Operator Panel Option
 -------------------------
 Multi-Function Connector/Jumper Block J2 is used to connect the
 drive to a user-supplied operator panel.

 J2 Pin 19  Logic ground

        20  Not used

        21  Write Protect Input. Logic Ground disables writing and
            lights the Write Protect LED.

        22  Ready output. Logic ground indicates the drive is Ready
            and lights the Ready LED.

        23  +5V source for the LEDs.


 J4/J5  Ground Connection
 ------------------------
 3/16-inch spade lugs J4 and J5 are provided for grounding; system
 characteristics determine proper ground connection.


 W1/W2/W11  Bus Termination Power Option
 ---------------------------------------

   +-----------------------+------------------------------------+
   |        Jumpers        |                                    |
   |  W1   |  W2   |  W11  |                                    |
   +-------+-------+-------+------------------------------------+
   | CLOSED| OPEN  | OPEN  |The drive provides terminator power |
   |       |       |       |to its on-board terminators         |
   |       |       |       |(Factory default configuration)     |
   +-------+-------+-------+------------------------------------+
   | OPEN  | CLOSED| OPEN  |Terminator power is provided by the |
   |       |       |       |host via interface cable J1, pin 26 |
   +-------+-------+-------+------------------------------------+
   | OPEN  | CLOSED| CLOSED|The drive provides terminator power |
   |       |       |       |to its on-board terminators and     |
   |       |       |       |also to the SCSI bus via interface  |
   |       |       |       |cable J1, pin 26 (TERMPWR)          |
   +-------+-------+-------+------------------------------------+

 Under normal conditions, TERMPWR is sourced by SCSI Initiators.
 There may be some unique system configurations which needs a target
 to supply TERMPWR to the cable, W11 is provided for this requirement.


 W4  Bus Parity Check Option
 ---------------------------
     CLOSED  The drive neither generates nor detects parity.
     OPEN    The drive generates parity and enables parity detection.
             (Factory default configuration)


 W5  Spindle Control Option
 ---------------------------
     CLOSED  The drive must wait for an interface START UNIT command
             to start the spindle motor.
     OPEN    The drive automatically starts the spindle motor at
             power-on. (Factory default configuration)



 W28 Frame Ground Option
 ------------------------
     CLOSED  Frame Ground is connected to logic ground
     OPEN    Frame Ground is not connected to logic ground
             (Factory default configuration)

 This option is valid only on boards Rev. B and later!



 J3   DC Power and pin connector assignments
 -------------------------------------------
 -------------------+
 --+  +-----J3-----+|  pin 1    +12 VDC
  1|  | 4  3  2  1 ||  pin 2    +12 Volts Return
  -+  +------------+|  pin 3    + 5 Volts Return
  ------------------+  pin 4    + 5 VDC



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MICROPL. 1580 SERIES  TECHNICAL MANUAL 104644 REV. A

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

 Note that only those pages which are different from the single-ended
 schematic are shown special.


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

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


 Dimensions and Mounting
 -----------------------
 The 1580 series uses industry-standard mounting techniques for
 5 -inch Winchester disk drives.

 Recommended orientation is vertical on either side, or horizontal
 with the Device Electronics board down.


 Mounting Screws
 ---------------
 2 per side 6-32 UNC-2B x 0.156 max deep.
 4 on bottom 6-32 UNC-2B x 0.20 max deep.

 Caution: The mounting screws must be selected so that they do not
 penetrate the bottom mounting holes more than 0.20 inches and the
 side mounting holes more than 0.156 inches. Screws that are too long
 will short to  PCBA components and/or prevent proper operation of the
 shock mount system.


 Power Connector J3
 ------------------
 DC power is supplied to the drive at 4-pin, keyed, AMP MATE-N-LOK
 Connector J3.

 Suggested wire size is 18 AWG (minimum) for all pins.

 Recommended mating connector is AMP 1-480424-0

 Recommended pins are AMP P/N 60619-4 (loose), 61117-4 (strip)


 Interface Electrical Characteristics (Single-ended)
 ---------------------------------------------------
 Interface control and status signals are digital (open collector TTL)
 utilizing industry-standard transmitters and receivers which provide
 a terminated, single-ended system.

 The assigned signals are terminated with 220 ohms to +5V (nominal)
 and 330 ohms to ground at each end of the cable. All signals use
 open-collector or three-state drivers.

 Single-ended drivers and receivers allow a maximum cable length of
 six meters (primarily for connection within a cabinet).

 Signal transmission requires a single 50-conductor cable. A
 characteristic impedance of 100 ( 10%) ohms is recommended for un-
 shielded flat or twisted pair ribbon cable.

   a. Input Characteristics
      Each received signal has the following characteristics when
      measured at the interface connector.

      1)  Signal true = 0.0 VDC to 0.8 VDC
      2)  Maximum total input load = -0.4 milliamps at 0.4 VDC
      3)  Signal false = 2.0 VDC to 5.25 VDC
      4)  Minimum input hysteresis = 0.2 VDC

   b. Output Characteristics
      Each signal driven by an SCSI device has the following
      characteristics when measured at the interface connector.

      1)  Signal assertion = 0.0 VDC to 0.4 VDC
      2)  Minimum driver output capability = 48 milliamps (sinking) at
          0.5 VDC.
      3)  Signal negation = 2.5 VDC to 5.25 VDC

   c. Terminator Power (TERMPWR at Pin 26)
      Terminator Power has the following requirements:

      V(TERM) = 4.25 VDC to 5.25 VDC

      800 milliamps minimum source drive capability with 1.0 amp
      recommended current limiting (e.g., a fuse).

      1.0-milliamp maximum bus loading (except for the purposes of
      providing power to an internal terminator).

 The 1580 Series provides keyed connectors to prevent accidental
 grounding or misconnection of terminator power.


 Interface Electrical Characteristics (Differential)
 ---------------------------------------------------
 Differential drivers and receivers allow a maximum cable length of
 25 meters. Differential interface signals consist of two signal lines
 denoted +SIGNAL and -SIGNAL.

 A signal is true when +SIGNAL is more positive than -SIGNAL, and a
 signal is false when -SIGNAL is more positive than +SIGNAL.

 - Signal transmission requires a single 50-conductor cable.
 - A characteristic impedance of 100 ( 10%) ohms is recommended for
   unshielded twisted-pair ribbon cable.
 - A minimum conductor size of 28 AWG should be employed to minimize
   noise effects and ensure proper distribution of optional
   terminator power.

 A stub length of no more than 0.2 meters is allowed off the mainline
 interconnection within any connected equipment.

   a. Input Characteristics
      Each of the drives signal receivers has the following
      characteristics when measured at the interface connector.

      I(I) (input current on either input) =  2.0 milliamps, max

      Note: These characteristics include both receivers and passive
            drivers.

 This requirement is met with the input voltage varying between -7V
 and +12V, with power either on or off, and with hysteresis equaling
 35 millivolts, minimum.

   b. Output Characteristics
      Each driven signal has the following characteristics when
      measured at the interface connector.

      V(OL)  (low-level output voltage) = 1.7 V max at I(OL)
             where I(OL) = 55 milliamps

      V(OH)  (high-level output voltage) = 2.7 V max at I(OH)
             where I(OH) = -55 milliamps

      V(OD)  (differential voltage) = 1.0 V minimum, with commonmode
             voltages ranges from -7 to +12

      V(OL) and VOH are measured between the output terminal and the
      SCSI device's logic ground reference.


   c. Terminator Power (TERMPWR at Pin 25 and 26)
      Terminator Power has the following requirements:

      V(TERM) = 4.0 VDC to 5.25 VDC

      600 milliamps minimum source drive capability with 1.0 amp
      recommended current limiting (e.g., a fuse).

      1.0 milliamp maximum busloading (except for the purposes of
      providing power to an internal terminator).

 The 1580 Series provides keyed connectors to prevent accidental
 grounding or misconnection of terminator power.


 Signal Connector J1
 -------------------
 Signal Connector J1 has 50 pins and is compatible (i.e., pin and
 function) with the Small Computer System Interface (SCSI) proposed
 by the American National Standards Committee. A differential inter-
 face is also available on special request.


 Multi-Function Connector J2
 ---------------------------
 Multi-Function Connector J2 has 24 pins and provides an interface
 connection for a user-supplied Operator Panel.


 Ground Connectors J4 and J5
 ---------------------------
 3/16-inch spade lugs J4 and J5 are provided for grounding. Systems
 characteristics determine proper ground connection.

 Mating connector: AMP 60972-2 or equivalent.


 Interface Terminator
 --------------------
 Interface Terminator pack RN9 provides proper termination for the
 interface lines. In multiple-device systems, the terminators are
 installed in the LAST device on the cable.


 Multiple 1580 System Configuration
 ----------------------------------
                                        Drive #1
  +------HOST------+                 +-----------------+
  | +-----------+  +--+-SCSI-BUS-----+ J1              |
  | |Terminators|  |  |       +------+ J3   J4/J5      |
  | +-----------+  |  |       |      +--------+--------+
  |                |  |       |               +------------------+
  +----------------+  |       |         Drive #2                 |
                      |       |      +-----------------+         |
                      +-------+------+ J1              |         |
                      |       o------+ J3   J4/J5      |         |
                      |       |      +--------+--------+         |
                      |       |               +------------------+
                      |       |         Drive #3                 |
                      |       |      +-----------------+         |
                      +-------+------+ J1              |         |
                      |       o------+ J3   J4/J5      |         |
                      |       |      +--------+--------+         |
                      |       |               +------------------+
                      |       |         Drive #4                 |
                      |       |      +------------+----+         |
                      +-------+------+ J1         |  T |         |
           ---DC-VOLTAGES-----o------+ J3   J4/J5 +----+         |
                                     +--------+--------+         |
           ---GROUND--------------------------+------------------+


 T = Terminator


 Shock Protection
 ----------------
 To protect the heads and media against damage caused by shock and
 vibration, 1580-series drives incorporate a Head/Disk Assembly (HDA)
 which is shock isolated from the outer Frame.

 For additional protection, an area of the disk not used for data
 storage is reserved for "landing" the heads. Whenever power is
 removed from the drive, the positioner automatically moves the heads
 to the landing zone where an automatic latching mechanism locks the
 positioner in place.


 Cooling
 -------
 The enclosure and mounting structure must be designed to allow for
 the natural convection of heat by permitting air to flow freely
 around the PCBA.

 A typical 1588-15 dissipates 28 watts (95.5 Btu/hr) in the standby
 mode and 33 watts (112.6 Btu/hr) while positioning. This is
 sufficient to maintain the ambient air temperature around the drive
 at or below 50*C (122*F).

 If the enclosure is small and/or natural air flow is restricted, a
 fan may be required.


 Spindle Motor and Control
 -------------------------
 The disks are rotated at 3600 RPM by a direct drive, brushless, DC
 motor and its associated electronics.



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                      F   E   A   T   U   R   E  S
**********************************************************************
MICROPL. 1580 SERIES  TECHNICAL MANUAL 104644 REV. A


 1588-15S/1585-8S Specifications
 -------------------------------
 The 1588-15S is a short stroke version of the 1580 Series drive
 specifically engineered for applications requiring very fast access.
 This is achieved by reducing the total number of accessible
 cylinders.

 The 1585-8S is a depopulated version of the 1580 Series drive
 specifically engineered for applications which require 389 Mbytes and
 15 MHz transfer rate at the lowest possible cost. This is achieved
 by removing three disks and seven data heads. The total cylinders are
 then adjusted to obtain a capacity of approximately 389 Mbytes.


 Seek Time
 ---------

                                          | 1580   |
        ----------------------------------+--------+
        Track-to-Track         msec. typ. |   4    |
                       Average msec. typ. |  16    |
                       Maximum msec.      |  35    |
        One-Third Stroke       msec. max. |  17    |
        Latency                msec. avg. |   8.33 |
        ----------------------------------+--------+



 Formatted Capacity Calculation
 ------------------------------
 The formatted capacity of the 1580 Series depends upon a number of
 user-selectable variables. One critical variable is sparing, either
 track-oriented or cylinder-oriented. The following formula is used to
 calculate the formatted capacity (C) of the 1580 Series using
 cylinder-oriented sparing:

 C = [(SPT x HDS) - (SPARE_SPC)] x (1632 - 3 - SPARE_CYL) x (BYTES)

 SPARE SPC is the number of spare sectors per cylinder. This variable
 is user programmable. The recommended value varies with each drive
 model as follows:

 1588-15 = 4     1587-12 = 6    1585-09 = 5
 1588-14 = 7     1586-11 = 6    1585-08 = 4
 1587-13 = 7     1586-10 = 5    1584-07 = 4


 1632 is the number of physical cylinders.

 3 cylinders are used by the drive and are not useraccessible.

 SPARE CYL is the number of spare cylinders. This variable is user
 programmable; a typical value for sparing is 3.

 BYTES is the bytes per sector (e.g., 1024, 512, etc.)


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

 At the time of manufacture, a media test system evaluates every drive
 and identifies each media defect location. The defects are listed on
 a label affixed to the drive.

 The defective areas are located by:

      a. Head address (HD)
      b. Cylinder address (CYL)
      c. Number of Bytes from Index (BFI).

 A printed list of the defects is also shipped with each drive.

 In addition to listing the defects on the label and the printout, the
 defects are also mapped on the drive.


 Introduction
 ------------
 The 1580 Series is designed for trouble-free operation. Since most
 maintenance procedures require a high degree of technical
 sophistication, proper training, and the right equipment, only pro-
 perly trained personnel should perform corrective maintenance.


 Preventive Maintenance
 ----------------------
 Preventive maintenance is not required during normal use.


 Corrective Maintenance
 ----------------------
 There are no field-replaceable components within the sealed area;
 therefore, cleanarea integrity MUST NOT be violated. The Micropolis
 warranty will be invalidated if any of the screws in the Head/Disk
 Assembly are removed.


