
M 2 2 4 9 S A    FUJITSU
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    1243|     |     |
Capacity form/unform   318/  371 MB        Heads          15|     |     |
Seek time   / track  18.0/ 4.0 ms          Sector/track   36|     |     |
Controller           SCSI1 SINGLE-ENDED    Precompensation
Cache/Buffer            16 KB              Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                      2.500 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 45    |    -40 60
Power: sleep              W     Humidity     %        20 80    |      5 95
       standby            W     Altitude    km            3.000|        12.000
       idle               W     Shock        g         2       |     20
       seek          40.0 W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA        45
       spin-up            W     ECC        Bit   32
                                MTBF         h      30000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

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FUJITSU  M2247/M2248/M2249-S/SA/SB  OEM MANUAL 41FH5023E-02

  +---------------------------------------------------------++-+
  |                                *  *  *  *         +-++-+|| CN5
  |                               L0 L1 L2 L3         |RM57||+-+
  |  +---+CN104                                       +*++*+|XX
  |  +---+CN105                             2+-+1           |XX
  |  +---+CN106                              | CN2          |XX
  |  +---+                                   | |            |XX 50 Pin
  |                                        10+-+9           |XX
  |           1+--------+15      15+-+16    1+---------+15  |XX
  |           2+-CNH102-+16        | CN4    2+---------+16  |XX
  |           1+--------+15        | |           CN3        |XX
  |           2+-CNH101-+16       1+-+2                     |XX
  |                                                         |XX
  |                          1+-----9++1-------+15          |XX
  |  1+--------+15           2+CNH106++-CNH105-+16          | 1
  |  2+-CNH103-+16                                          |
  |               1+--------+15                             |XX Power
  |               2+-CNH104-+16                             |XX
  +---------------------------------------------------------+


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FUJITSU  M2247/M2248/M2249-S/SA/SB  OEM MANUAL 41FH5023E-02

 Jumper Settings
 ===============

 x = Jumpers are set from factory

 The user MUST NOT change the setting of terminals not described in
 this section. Do not connect or disconnect connectors or change
 terminals except for CN3/CN9 when power is on!

 Setting plugs and switch are set as follows when shipped from the
 factory:

 CN3     11-12, 13-14, 15-16
 CN5     4 ON, 5 ON
 CNH104  3-4
 CNH105  15-16


 CN5  SCSI ID setting
 --------------------

         SCSI ID| CN5 | CN5 | CN5 |
                | SW3 | SW2 | SW1 |
         -------+-----+-----+-----+
 x         0    |OFF  |OFF  |OFF  | Set the SCSI ID so that there are
           1    |OFF  |OFF  |ON   | no duplicates between SCSI devices
           2    |OFF  |ON   |OFF  | on the same SCSI bus.
           3    |OFF  |ON   |ON   |
           4    |ON   |OFF  |OFF  | The priority of SCSI bus ARBITRA-
           5    |ON   |OF   |ON   | TION phase is determined by SCSI
           6    |ON   |ON   |OFF  | ID as follows: 7>6>5>4>3>2>1>0
           7    |ON   |ON   |ON   |


 CN5  SCSI bus parity
 --------------------
 x     SW4   ON      SCSI data bus parity check by the IDD executed
       SW4   OFF     Not executed


 CN5  Arbitration option setting
 -------------------------------
 x     SW5   ON      Enable
       SW5   OFF     Disable

 If the arbitration phase is disabled, the Disconnect/Reconnect func-
 tion on SCSI is inhibit.


 CN5  Disable Synchronous Mode Transfer
 --------------------------------------
       SW7   ON      Inhibit
 x     SW7   OFF     Permit

 Data transfer rate with the synchronous mode transfer depends on
 REQ/ACK Offset, Transfer Period, and response time of ACK pulse from
 the INIT.


 CN5  Diag Switch
 ----------------
 x     SW8   OFF     Stop (Normal Mode)
       SW8   ON      Execute (Diagnostic Mode)


 CN4   Unit Attention Condition
 ------------------------------
        9-10 CLOSE   POWER ON, RESET, MODE SELECT PARAMETER CHANGED
 x      9-10 OPEN    NOT READY TO READY, RESET, MODE SELECT PARAMETER
                     CHANGED


 CN3  SCSI terminating resistor power
 ------------------------------------
 x     11-12 CLOSE   From TERMPWR Pin and IDD (To TERMPWR Pin)
 x     13-14 CLOSE

       11-12 OPEN    From IDD
       13-14 CLOSE

       11-12 CLOSE   From TERMPWR Pin
       13-14 OPEN


 The table shows, how to supply power to the IDD SCSI terminating re-
 sistor module and how to use TERMPWR lines on the SCSI bus. When the
 IDD connects to a position other than at either end of the SCSI cable
 do not mount the terminating resistor modules on the IDD.

       +-----------------------------------------------------+
       |                     +------ CN3 ------+   -+- +5V DC|
      +++                    |11 12    14   13 |    |        |
        | TERMPWR            +-+--+-----+----+-+    + Diode  |
      S *----------------------+  |     |    +------+        |
      C |                         +-----+----+               |
      S |                             +------+-----+         |
      I *-----------------------------+ Terminator |         |
        | SIGNAL                      | Circuit    |         |
      +++                             +------+-----+         |
       |                                     + GND           |
       +-----------------------------------------------------+


 CN3   Front panel LED indication
 --------------------------------
 x     15-16 CLOSE   Seek complete and SCSI accessing
       15-16 OPEN    Seek complete


 CNH105  Drive type setting
 --------------------------
              |M2247|M2248|M2249| The settings of pins 11 to 14 of
       -------+-----+-----+-----+ CNH105 indicates the IDD model types
       11-12  |OPEN |CLOSE|OPEN |
       -------+-----+-----+-----+ The user must not change this set-
       13-14  |OPEN |OPEN |CLOSE| tings.
       -------+-----+-----+-----+


 CNH105  Spindle motor after POWER ON
 ------------------------------------
 x     15-16 CLOSE   Rotate
       15-16 OPEN    Not Rotate


 LED indicators
 --------------
 The 4-bit LED (L3 to L0) indicates the IDD operation status and re-
 sults of diagnostics.

 +----+----+----+----+--------------------------------------------
 | L3 | L2 | L1 | L0 |
 +----+----+----+----+---------+      IDD state
 |RED |   AMBER      | COLOR   |
 +----+----+----+----+---------+----------------------------------
 |OFF |OFF |OFF |OFF |Operating
 +----+----+----+----+--------------------------------------------
 |OFF |OFF |OFF |ON  |Idle (IDD ready)
 +----+----+----+----+--------------------------------------------
 |OFF |OFF |ON  |ON  |In diagnostics
 +----+----+----+----+--------------------------------------------
 |OFF |OFF |ON  |OFF |Drive error has been detected during diagnosis
 +----+----+----+----+--------------------------------------------
 |OFF |ON  |OFF |OFF |ROM error has been detected during diagnosis
 +----+----+----+----+--------------------------------------------
 |OFF |ON  |OFF |ON  |RAM error has been detected during diagnosis
 +----+----+----+----+--------------------------------------------
 |OFF |ON  |ON  |OFF |Register error has been detected during diagnos
 +----+----+----+----+--------------------------------------------
 |OFF |ON  |ON  |ON  |Buffer error has been detected during diagnosis
 +----+----+----+----+--------------------------------------------
 |ON  |OFF |OFF |OFF |Drive hard error has been detected
 +----+----+----+----+--------------------------------------------
 |ON  |OFF |OFF |ON  |Spindle motor revolutions fewer than 90%
 +----+----+----+----+--------------------------------------------
 |ON  |OFF |ON  |OFF |VCM overcurrent
 +----+----+----+----+--------------------------------------------
 |ON  |OFF |ON  |ON  |Initial seek timeout
 +----+----+----+----+--------------------------------------------
 |ON  |ON  |OFF |OFF |+12V/+5V less than 80% of standard
 +----+----+----+----+--------------------------------------------
 |ON  |ON  |OFF |ON  |Seek error
 +----+----+----+----+--------------------------------------------
 |ON  |ON  |ON  |OFF |Write fault
 +----+----+----+----+--------------------------------------------
 |ON  |ON  |ON  |ON  |Controller hard error
 +----+----+----+----+--------------------------------------------



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FUJITSU  M2247/M2248/M2249-S/SA/SB  OEM MANUAL 41FH5023E-02

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

 Installation direction
 ----------------------
     horizontally                          vertically
    +---------------+                  +--+                  +--+
    |               |                  |  +-----+      +-----+  |
    |               |                  |  |     |      |     |  |
 +--+---------------+---+              |  |     |      |     |  |
 +----------------------+              |  |     |      |     |  |
                                       |  |     |      |     |  |
      X           X                    |  |     |      |     |  |
 +------X-------X-------+              |  |     |      |     |  |
 +--+-----X---X-----+---+              |  +-----+      +-----+  |
    |      X X      |                  +--+                  +--+
    |    X    X     |
    +--X--------X---+
     X            X

 There are three possible installation directions, and the mounting
 angle must be  5* from the horizontal.

 Never install PCA to the top!


 Ambient temperature
 -------------------
 When the IDD is operating, the ambient temperature measured 3 cm from
 the Disk Enclosure (DE) surface and from the PCA surface must satisfy
 the specified requirements.


 Multi-drive connection
 ----------------------
 Host systems, IDDs and other SCSI controllers are connected (daisy
 chained) to SCSI provided that the total number of connected SCSI
 devices is a maximum of eight.

 SCSI cable
 ----------
 The total length of SCSI interface cable must be shorter than 7m.

 A characteristic impedance of 100   10% is recommended for unshielded
 twisted-pair ribbon cable. A characteristics impedance greater than
 90  is preferred for shielded cable. A minimum conductor size of 28
 AWG shall be employed. It is recommended that shielded cable be used
 for connection outside of a cabinet.

 To minimize discontinuities and signal reflections, cables of dif-
 ferent impedance should not be used in the same bus. The maximum
 cable length is 7m. 1m or more cable length is recommended between
 SCSI devices.

 Check, that system power is off before connecting or disconnecting
 cables!

 Be carefull of the insertion directions of the SCSI connectors. With
 the system in which terminating resistor power is supplied via the
 SCSI cable, if the drive power is turned on, the overcurrent protec-
 tion fuse of the terminating resistor power supplier may be blown or
 the cable may be burnt if overcurrent protection is not provided.


 Terminator
 ----------
 All SCSI devices on one bus are daisy-chained with a SCSI cable. A
 terminating resistor must be mounted in the SCSI device at each end
 of the SCSI cable.

 Since a SCSI terminating resistor module is mounted in the IDD on
 shipment, it must be removed when the IDD is not connected at either
 end of the SCSI cable. Also, a method for the power supply to the
 terminating resistor must be selected with the setting terminal on
 the IDD.

 When connecting the IDD to either end of the SCSI cable, do not de-
 mount the terminating resistor module.
 When connecting the IDD to a position other than both ends of the
 SCSI cable, demount terminating resistor modules.

 SCSI cable                   SCSI cable
 ----------++-------+         ----------++-------++-------X TERM
       +---++--+ +-xxx---+          +---++--+ +--++---+
       |       | | TERM  |          |       | |       |
       |       | |       |          |       | |       |
       |  IDD  | |  IDD  |          |  IDD  | |  IDD  |
       +-------+ +-------+          +-------+ +-------+
            Correct                     Correct

 SCSI cable                   SCSI cable
 ---------+                   ----------++-------X TERM
       +-xxx---+                    +--xxx--+
       | TERM  |                    |  TERM |
       |       |                    |       |
       |  IDD  |                    |  IDD  |
       +-------+                    +-------+
        Correct                     INCORRECT!

 When removing the terminating resistor module from the socket, be
 careful not to damage the resistor module pins, mount socket and
 contiguous parts.
 When mounting the terminating resistor moudle, check the mounting
 direction and wether the module is fixed.

      +- Marker shows pin 1            +- Marker shows pin 1
      |                                |
      |  +-----------------+           |
      |  |* * * * * * * * *|           |  +*-*-*-*-*-*-*-*-*+
      +- *                 |           +- * Resistor        |
         |* * * * * * * * *|              +*-*-*-*-*-*-*-*-*+
         +-----------------+
         Socket, terminating resistor
         module not present


 Sequential starting of spindle motors
 -------------------------------------
 After the power is turned on to the IDD, a large amount of current
 flows in the +12 V DC line when the spindle motor rotation starts.
 Therefore, if more than one IDD is used, the spindle motors should
 be started sequentially using one of the following procedures:

 1. Issue START/STOP UNIT commands at 20-second intervals to start
    the spindle motors.
 2. Turn on the +12 V DC power in the power supply unit at 30-second
    intervals to start the spindle motors sequentially.


 Noise filter
 ------------
 To eliminate AC line noise, a noise filter should be installed at the
 AC input terminal on the IDD power supply unit.
 Attenuation:             40 dB or more at 10 MHz.
 Circuit configuration:   T type


 Operator panel connector
 ------------------------
 The operator panel connector provides for optional connection of
 write protect switch.

         +-- CN105        CN106|Signal|Definition
    +---+-+---+           -----+------+---------------
    |3 1|1|3 1|              1 | + 5V | + 5V
    |4 2|2|4 2|           -----+------+---------------
  --+---+-+---+--            2 |   0V | Ground
    CN104 CN106           -----+------+---------------
                            3  |FPTCT |Write protect
  view from cable         -----+------+---------------
  side of connector         4  |CMDCMP|Ready indicator
                          -----+------+---------------



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                      F   E   A   T   U   R   E  S
**********************************************************************
FUJITSU  M2247/M2248/M2249-S/SA/SB  OEM MANUAL 41FH5023E-02

 SCSI interface
 --------------
 The interface between the host system and the IDD meets SCSI standard
 The following extended features are also provided:

                 Arbitration
                 Disconnection/Reselection
                 Synchronous data transfer with 2.5MB/s transfer rate

 Command set
 -----------
 All of SCSI mandatory commands and extended commands are provided and
 the command set meets the SCSI CCS requirements. In addition, power-
 ful Vendor Unique Commands have been provided to improve data hand-
 ling capability.
 These commands can manipulate data through logical block addressing
 independent of the physical characteristics of the IDD.

 Command queuing
 ---------------
 IDD can accept multiple commands from multiple hosts.


 Data error correction
 ---------------------
 If a recoverable error occurs, IDD attemps to recover errors from in-
 side the IDD. Correctable data error can be corrected in the data
 buffer so that error-free data can be transferred to the host system.


 Mean Time Between Failures (MTBF)
 ---------------------------------
 The estimated MTBF of the IDD during its life time is 30.000 hours
 after an initial 3-month period.


 Mean Time To Repair (MTTR)
 --------------------------
 MTTR is the average time taken by a well-trained service mechanic to
 diagnose and repair a unit malfunction. IDD is designed for a MTTR
 of 30 minutes or less.


 Service life
 ------------
 Overhaul of the drive is not required for the first five years.


 Power loss
 ----------
 Integrity of the data of the disk is guaranteed against all forms of
 abnormal DC power failure except a power failure during writing.


 Media defects
 -------------
 Cylinder 0, Head 0 and 1 are error free.

 M2247S/SA/SB        Fewer TBD
 M2248S/SA/SB        Fewer TBD
 M2249S/SA/SB        Fewer TBD

 The maximum defect length is 32 byte.


 Sector interleaving
 -------------------
 Sector interleaving enables the data transfer rate required on SCSI
 during read or write operation of continuous blocks to be decreased.

 To use sector interleaving, the user must reformat the disk drive by
 a Format Unit command. The Format Unit command permits a sector in-
 terval between blocks to be specified as an interleaving factor. The
 user need not be concerned with correspondences of blocks with their
 physical sector locations, because any data access after the comple-
 tion of formatting is performed in accordance with the block arran-
 gement.

 In sector interleaving mode, the data blocks in a drive are accessed
 at intervals of (m) sectors, where (m) is determined by the inter-
 leaving factor. In read/write operations on continuouse blocks in the
 sector interleaving mode, the data buffer helps decrease data trans-
 fer rate required in SCSI. The data transfer rate in SCSI required
 to maintain continuouse block processing without unexpected revolu-
 tion delay when the interleaving factor is (m) can be determined by
 the following expression:
                                    1.25MB/s   x   data field length
 SCSI average data transfer rate   ----------------------------------
                                    physical sector length   x   (m)


