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Hard Drive: ITOCHU: YD-3082B 91MB 3.5"/HH SCSI1 SE




Y D - 3 0 8 2 B    ITOCHU
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    1057|     |     |
Capacity form/unform    91/      MB        Heads           4|     |     |
Seek time   / track  28.0/ 8.0 ms          Sector/track   42|     |     |
Controller           SCSI1 SINGLE-ENDED    Precompensation
Cache/Buffer               KB              Landing Zone
Data transfer rate    1.500 MB/S int       Bytes/Sector      512
                            MB/S ext
Recording method     RLL 2/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 65
Power: sleep              W     Humidity     %         8 80    |
       standby            W     Altitude    km    -0.300  3.000| -0.300  9.000
       idle               W     Shock        g         5       |     50
       seek               W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA        50
       spin-up            W     ECC        Bit
                                MTBF         h      30000
                                Warranty Month
Lift/Lock/Park     YES          Certificates

Layout

YE-DATA YD-3081B/3082B/3083B/3084B PRODUCT SPECIFICATIONS RDB-528002

  +---------------------------------------------------------+
  |                                                   J2XXXXXXXX
  |                                                  Power  +--SCSI
  |                                                         |  |ID
  |                                                         +--0
  |                                                         |XXXI
  |                                                   RP2++ |XXXN
  |                                                      || |XXXT
  |                                             Terminator| |XXXE
  |                                                      || |XXXR
  |                                                     1++ |XXXF
  |                                                   RP1++ |XXXA
  |                                                      || |XXXC
  |                                             Terminator| |XXXE
  |                                            +-+       || |XXX
  | +-J5                                    JP10-+ +-+  1++ |XXX
  | +-+LED                                         +-JP2    |XXX
  +---------------------------------------------------------+   1

Jumpers

YE-DATA YD-3081B/3082B/3083B/3084B PRODUCT SPECIFICATIONS RDB-528002

 Jumper Setting
 ==============
                                   SCSI ID
     +---------------------------+-+------+---+-----+
     | ooooooooooooooooooooooooo | |      |   | XXX |
     | 1oooooooooooooooooooooooo | +------+   +-----+
     +---------------------------+  0 1 2 P   Power J2

 SCSI ID Setting
 ---------------
   +----------+-----------------------+
   | SCSI ID  |         Pins          |
   |          | 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|
   +----------+-------+-------+-------+

All SCSI ID pins are shorted (ID-7) when shipped. The recommended
shorting plus is an IRISO P/N IMSA-9206H-GF.

When switching the ID number by remote control, use a JAE P/N
PS-8SLA-D4C2 (8-pin) connector as mating connector.

NOTE
Four short plugs for SCSI ID and PARITY are mounted on the PCB.
Please adjust these short plugs to meet your application
requirements.

Parity Setting
--------------
Parity is implemented and selectable via a jumper option. Data parity
can be checked by shorting the parity pin. The parity pin is shorted
when shipped. The recommended shorting plug is an IRISO P/N ISMA-
9206H-GF (2.5 mm pitch).

 Parity  | Parity Pin
 --------+-----------
 Enable  | Short
 --------+-----------
 Disable | Open

Termination Resistor Packs
--------------------------
The line termination resistors are inserted in IC sockets on the PCB
and can be removed. The termination resistor packs should be removed
during multidrive configuration except for those lying at both ends
of the SCSI bus.

 Termpower
 ---------
 The drive is equipped with termpower. Switch over the selection pins
 when necessary.
                      +5V
  |                    +
  |                    |
  |                   +++
  |       F3          |o|
  |      Fuse   JP2   |o|JP10
 TERMPWR +---+ +---+  +++
  O------+o o+-+o o+---o
  |      +---+ +---+   o---+
  |      1 AMP         |  +++                    +-Receiver
  |                    |  | |R1          +-------+X+-------------
 DB7 0,P BSY,SEL       |  +++            |       +-+
  O--------------------+---o-------------o
  |                    |  ++++-+         |       +-Driver
  |                    |R2| || |         +-------+X+-------------
  |                    |  +++|+++                +-+
  |                    |  +++|| |R1
 OUT C/D,I/O,MSG,REQ   o-----++++
  O--------------------+-------o----------+      +-Driver
  |                    |      +++         +------+X|
  |                    |      | |R2              +-+
  |                    |      +++
  |                    |      +++
  |                    +----------+
  |                              +++
  |                              | |R1
 IN ACK,ATN,RST                  +++
  O-------------------------------o----------+  +-Receiver
  |                              +++         +--+X|
  |                              | |R2          +-+
  |                              +++
  |                              +++
  |
       R1: 220
       R2: 330

Install

YE-DATA YD-3081B/3082B/3083B/3084B PRODUCT SPECIFICATIONS RDB-528002

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

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
      UNACCEPTABLE!                                UNACCEPTABLE!
      Never install PC board on the Top!

Mounting
--------
The drive can be mounted either horizontally or vertically. If
mounting the drive horizontally, make sure that the PCB lies on the
bottom of the drive. An orientation with the front panel on the top
is not feasible.

There are eigth tapped mounting holes in the frame, to facilitate the
mounting of the drive into an enclosure. Rubber vibration isolators
are provided between the head disk assembly and the enclosure frame.
To maximize vibration isolation, however, it is necessary to provide
a minimum of 1.5 mm clearance between the head disk assembly and the
enclosure. This clearance allows for movement of the drive during
acceleration.

When installing a cleaning fan in the enclosure, make sure that the
drive is not directly exposed to the air flow. The remommend air
velocity in the vinvinity of the drive is 0.3 m/s.

An interface cable and a frame ground cable are required for drive
operation. The SCSI ID blocks (plugs) should be properly set and the
line termination resistor pack removed for multidrive configuration.

Cautions
Avoid an yaction which would expose the inside of the head disk
assembly (HDA), which seals the disk and read/write heads, to the
ambient air.

Avoid any action which would cause the positioner motor to rotate
from the outside.

Front Panel (optional)
----------------------
The front panel, which is optional, is attached to the frame with two
screws.

Electrical Interface
--------------------
The drive is connected to the host system via a J1 SCSI connector, a
J2 DC power connector, a J4 frame ground terminal and as an option, a
J5 LED connector. The SCSI ID pins and the "PARITY" pin need to be
adjusted.

 J1 SCSI Connector
 -----------------
 The YD-308XB series drive uses single-ended drivers and receivers.
 All assigned signals are terminated with 220  to +5VDC and 330  to
 ground. A 50 pin shrouded-head, nonshielded SCSI connector is used.
 The connection cable should not be longer than 6.0 meters.

The recommended SCSI connector is a Fujitsu FCN-745Q050-AU or
equivalent.

J2 Power Connector
------------------
The J2, DC power connector is an AMP P/N 350211-1.

The recommended mating connector is an AMP P/N 1-480424. Drive power
consumption and cable length should be the main considerations when
selecting a DC power cable. Also ensure that the cable wires match
the connector pins.

 +-----------------------
 | +------------+         pin 1  +12V
 | | 4  3  2  1 |J2       pin 2  +12V Return GND
 | +------------+         pin 3  + 5V Return GND
 |                        pin 4  + 5V
 +----+
 |    |
      |

 Frame Ground Terminal
 ---------------------
 The J4 connector is a Fast-On Tab AMP P/N 61726-2. The recommended
 mating connector is a Fast-On Tab AMP P/N 60972-1. Do not connect
 these connectors if it suspected that noise might interfere with the
 frame ground line.
 +------------------------------------+
 |                +----------+        |
 |                |Name Plate|        |
 | ++J4           +----------+        |
 +-++---------------------------------+

J5 LED Connector
----------------
The "READY/BUSY" LED J5 connector is a JAE P/N IL-S-3P-S2L2-EF.
The recommended mating pin is a JAE P/N IS-S-3S-S2C2-S.

     ------------+-----+--   1 Ready LED Cathode
                 |3 2 1|     2 Common Anode (+5V)
                 +-----+     3 Busy LED Cathode

 Electronic Specifications
 -------------------------
 The drive uses three-state, single-ended drivers and single-ended
 receivers. The input and output charateristics are shown below. All
 assigned signals are terminated with 220  to +5VDC and 330  to
 ground.
 +------+---------------------------------------+--------------------+
 |Item  |            True                       |       False        |
 +------+---------------------------------------+--------------------+
 |Output| 0.0 VDC to 0.4 VDC                    | 2.5 VDC to 5.25 VDC|
 |      | Max. Sinking Current: 48mA at 0.5VDC  |                    |
 +------+---------------------------------------+--------------------+
 |Input | 0.0 VDC to 0.8 VDC                    | 2.0 VDC to 5.25 VDC|
 |      | Max. total input load: -0.4mA at 0.4V | Minimum Hysteresis:|
 |      |                                       | 0.2VDC             |
 +------+---------------------------------------+--------------------+

SCSI Bus
--------
The SCSI bus can have up to eight devices. However communication on
the SCSI bus is allowed between only two SCSI devices at any given
time. When two SCSI devices communicate in the SCSI bus, one acts as
an initiator and other acts as an target. The initiator orginates an
orginates an operation and the target performs the operation. YD-3082
and YD-3042 have a fixed role as the target.

Features

YE-DATA YD-3081B/3082B/3083B/3084B PRODUCT SPECIFICATIONS RDB-528002

Introduction
------------
The YD-308XB series drive is a high capacity 3.5 inch hard disk drive
with a Small Computer System Interface. Four models are available:
YD-3081B, YD-3082B, YD-3083B and YD-3084B. The drive has the
following main features:

 1. SCSI Interface
    The 308XB series drive uses a Small Computer System Interface
    which complies with ANSIX3.131 and the Common Command Set Rev. 4B
    specifications. In addition, the interface supports various
    optional commands.

 2. High Capacity
    Due to the adoption of 2-7 RLL coding method, a capacity of 45 MB
    per disk has been realized.

 3. High Reliability
    A built-in, automatic read/write error correction function ensures
    reliable data storage.

 4. High Speed
    An embedded servo system has served to reduce average access time
    to as little as 28 milliseconds. Also, the use of a 1:1 interleave
    track formation has enabled high speed multi-sector read/write.

 5. Compactness
    The 308XB series drive takes up half the space of a half-height
    5.25 inch drive. Two drives can be fitted into a single 5.25 inch
    half-height slot. Furthermore, the drive weighs a light 750g.

 6. High-performance Mechanics
    The drive features an internal air filtration system and an
    innovative headretract mechanism that automatically moves the
    heads to the CSS (Contact Start Stop) area on power down so that
    data remains safe and secure.

 Seek Time
 ---------
       +----------------------------------+--------+
       |                                  | 308XB  |
       +----------------------------------+--------+
       |Track-to-Track         msec. typ. |   8    |
       +----------------------------------+--------+
       |Average                msec. typ. |  28    |
       |                       msec. max. |  49    |
       +----------------------------------+--------+
       |Latency                msec. avg. |   8.33 |
       +----------------------------------+--------+

Ready LED (Green) and Unrecoverable Error Detection
---------------------------------------------------
READY LED indicates when the drive is in "READY" mode, ready to re-
ceive SCSI commands. If a "SPINDLE STOP" command is received, the
spindle motor will stop and the LED will go out. Should an unrecover-
able error occur, the spindle motor will stop and the LED will flash
on and off.

Busy LED (Red)
--------------
BUSY LED is turned on during the entire time that any command is
being executed, whether or not the drive is accessing the SCSI bus.
The BUSY LED also lights when a command is issued to the drive during
the start-up procedure and stays lit until the start-up procedure is
completed.

Note
For those models equipped with a J5 connector, the specifiations
in READY LED and BUSY LED are made possible by connecting the LED via
this connector.













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