
D K 3 1 5 C - 1 4    HITACHI
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    2480|     |     |
Capacity form/unform  1438/ 1670 MB        Heads          15|     |     |
Seek time   / track  10.4/ 2.0 ms          Sector/track     |     |     |
Controller           SCSI2 SI/FAST         Precompensation
Cache/Buffer           192 KB FIFO BUFFER  Landing Zone
Data transfer rate    4.800 MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C        10 50    |    -20 60
Power: sleep              W     Humidity     %         8 80    |      8 90
       standby            W     Altitude    km            3.000|        12.000
       idle               W     Shock        g         3       |     40
       seek               W     Rotation   RPM      4500
       read/write         W     Acoustic   dBA        45
       spin-up            W     ECC        Bit   96
                                MTBF         h     200000
                                Warranty Month
Lift/Lock/Park     YES          Certificates


**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
HITACHI  DK315C  CONCISE MANUAL REV 5/5.93 K2500491

  +---------------------------------------------------------+
  |+-------+                                          8+-+7 |XX
  ||       |                                      JP3  | |  |XX
  ||       |                                          2+-+1 |XX I
  ||       |                                                |XX N
  ||       |            15      1                           |XX T
  |+-------+            +++++++++JP2                        |XX E
  |+-+                  +++++++++                           |XX R  J1
  |+-+                 16       2                           |XX F
  |+-+                                                      |XX A
  || |                                                      |XX C
  || |                                                      |XX E
  || |J3                                                    |XX
  || |            COMPONENT SIDE                            |X1
  |+-+                                                      |XX J3
  |                                                         |XX Power
  +---------------------------------------------------------+








  +---------------------------------------------------------+
  |                                                  7----+ |XX J1
  |                                                  +----2 |XX
  |                                                      J6 |XX I
  |      OTHER SIDE                                         |XX N
  |                                                         |XX T
  |                                                         |XX E
  |                                                         |XX R
  |                                                         |XX F
  |                                                         |XX A
  |                                                         |XX C
  |                                                         |XX E
  |                                                         |XX
  |                                                     J7  |X1
  |                                                  +----1 |XX J3
  |                                                  8----+ |XX Power
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
HITACHI  DK315C  CONSISE MANUAL REV 5/5.93 K2500491

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

 x = Default setting


 The following jumpers are accessible to the user

                                         Jumper  Pins
  SCSI ID setting jumper                 J6      1   6
  SCSI bus parity jumper                 JP2     7   8
  Terminator power on/off jumper         JP3     1   4
  Terminator Enable/Disable              JP3     5   6
  MOTOR START/STOP setting jumper        JP2     5   6
  SPINDLE Synchronize                    JP2     1   4 and
                                         JP3     7   8

 Note: The DK315C jumpers other than listed above are installed by the
 manufacturer and must not be removed or replaced by the user.

 Never remove any of the BLACK factory set jumpers.
 These jumpers are unique to each drive.
 All jumpers should be set with power off.


 By using a extension cable from J6 connector, SCSI ID Setting and LED
 are externally available.


 J6   SCSI ID
 ------------
   +----------+-----------------------+
   | SCSI ID  | 5-6     3-4     1-2   |
   |          | 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  |
   +----------+-------+-------+-------+
   | x  7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+


 JP2  Motor Start/Stop
 ---------------------
 Pins 5-6
  x  CLOSED Spindle motor start up at the power on
     OPEN   Spindle motor start up units the SCSI "start/stop unit
            Command"


 JP2 7-8  SCSI bus parity
 ------------------------
  x  7-8  OPEN   Enables SCSI bus parity (default)
          CLOSED Disables SCSI bus parity


 JP3  Terminator Power on/off
 ----------------------------
 Pins 3-4
     CLOSED +5V source for terminator is supplied only from the SCSI
            bus (host)
 Pins 1-2
  x  CLOSED +5V source for terminator is supplied only from the
            drive controller.



 JP3  Terminator Enable/Disable
 ------------------------------
 Pins 5-6
     OPEN   Disable the terminator
     CLOSED Enable the terminator (terminate the SCSI bus)

 Note: Only the ends of the SCSI bus must be terminated. All other
 drive between the ends must have terminator disabled. Terminator
 power must either be supplied by the (HOST) or the drive controller.



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

 (shown on the drive side)



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
HITACHI  DK315C  CONSISE MANUAL REV 5/5.93 K2500491

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


 Possible Orientations
 ---------------------

     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

 It is permissible to install the DK315C horizontally or vertically
 as above.

 Mounting
 --------
 Mount the drive with four screws by proberly inserting them through
 4 holes in the drive. (Screw's torque: 6 8Kg-cm (2.36 3.15Kg-inch)
 Clearance not less than 3mm around HDA is required to accommodate any
 possible vibration of HDA itself.


 Sequential Activation of Motors
 -------------------------------
 When multiple disk drives are connected and turned on simultaneously,
 a large amount of current will flow. It is recommended to turn the
 motors on one by one at an interval of approx. 20 seconds. Indication
 of "READY" on the last drive reports that all drives have been
 activated.


 J6  Connector
 -------------
 Housing, DUPONT P/N 69305-002 (2 pin)
                     69307-004 (4 pin)
                     69307-006 (6 pin)
                     69307-008 (8 pin)
                     69307-010 (10 pin)
                     69307-012 (12 pin)
 Contact
 Socket,  DUPONT P/N 77138-201


