
M 2 6 2 4 F    FUJITSU
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    1429|     |     |
Capacity form/unform   461/  608 MB        Heads          11|     |     |
Seek time   / track  12.0/ 3.0 ms          Sector/track   18|     |     |
Controller           SCSI2 SINGLE-ENDED    Precompensation
Cache/Buffer           240 KB FIFO BUFFER  Landing Zone
Data transfer rate    3.000 MB/S int       Bytes/Sector      256
                     10.000 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         5       |     50
       seek               W     Rotation   RPM      4400
       read/write    11.0 W     Acoustic   dBA        43
       spin-up            W     ECC        Bit   56
                                MTBF         h     200000
                                Warranty Month
Lift/Lock/Park     YES          Certificates



**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
FUJITSU  M2622/M2623/M2624-F/FA/FB/H/HA/HB  OEM MANUAL 41FH5069E-01

  SCSI Single-Ended (M262xF)   B17B-1790-0300A
  +---------------------------------------------------------+
  |                              2   4                      |XX 49
  |                              +---+                   1  |XX
  |                        CNH2  +---+    +--------------+  |XX I
  |                              1   3    | TERMINATING X|  |XX N
  |                                       | RESISTOR     |  |XX T
  |                                       +--------------+  |XX E
  |                        1 2            1   5             |XX R
  |                        +-+            +++++CNH6         |XX F
  |   1+-CNH4+             | |            +---+             |XX A
  |   3+-----+         CNH7| |                              |XX C
  |                        +-+                              |XX E
  |+---+                   9 10   2          24             |XX
  ||   |                          +-----------+             |XX 1
  |+CN5+                          +---CNH1----+             |
  |1   2                2  1      1          23             |xx
  |                CNH3 +--+                                |XX Power
  |                     +--+                                |XX CN1
  +---------------------------------------------------------+






   M2622/M2623/M2624FA/SA, P/N B17B-1790-0200A/-0250A
  +---------------------------------------------------------+
  |                              +---4 CNH2                 |XX 49
  |                              1---+                      |XX
  |                              +-------------++1          |XX I
  |                              |Terminator   ++           |XX N
  |                              +--------------+           |XX T
  |                                                         |XX E
  |                                1---5                    |XX R
  |                                +---+CN6                 |XX F
  |   1+-CNH4+                                              |XX A
  |   3+-----+                   24-+                       |XX C
  |                               | |                       |XX E
  |+---+                          | | CNH1                  |XX
  ||   |                          | |                       |XX 1
  |+CN5+                          +-1                       |
  |1   2                2  1                                |xx
  |                CNH3 +--+   +--------10                  |XX Power
  |                     +--+   1--------+ CNH7              |XX CN1
  +---------------------------------------------------------+





   SCSI Differential (M262xH)    B17B-1790-0400A
  +---------------------------------------------------------+
  |                              2   4                      |XX 49
  |                              +---+                      |XX
  |                        CNH2  +---+                      |XX I
  |                              1   3                      |XX N
  |                                                         |XX T
  |                                                         |XX E
  |                        1 2                              |XX R
  |                        +-+                              |XX F
  |   1+-CNH4+             | |                              |XX A
  |   3+-----+         CNH7| |                              |XX C
  |                        +-+                              |XX E
  |+---+                   9 10   2          24             |XX
  ||   |                          +-----------+             |XX 1
  |+CN5+                          +---CNH1----+             |
  |1   2                2  1      1          23        5 1  |xx
  |                CNH3 +--+                      CN6 +++++ |XX Power
  |                     +--+                          +---+ |XX CN1
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
FUJITSU  M2622/M2623/2624-F/FA/FB/H/HA/HB  OEM MANUAL 41FH5069E-01

 Switches loacations
 ===================

 x = Jumpers are set from factory

 The user must not change the setting of terminals not described in
 this section. Do not change setting statuses set at factory ship-
 ment.
 Do not change the setting of terminals except CNH1 (self-diagnosis)
 or CNH7 (write protect) or do not connect or disconnect the SCSI ter-
 minating resistor module (M262xF only) when power is on.


 CN1   Single-Ended type SCSI (M262xF) connector
 -----------------------------------------------
       Pin number    Signal    Signal    Pin number
       --------------------------------------------
          01         GND       -DB0          02
          03         GND       -DB1          04
          05         GND       -DB2          06
          07         GND       -DB3          08
          09         GND       -DB4          10
          11         GND       -DB5          12
          13         GND       -DB6          14
          15         GND       -DB7          16
          17         GND       -DBP          18
          19         GND       GND           20
          21         GND       GND           22
          23         (Open)    (Open)        24
          25         (Open)    TERMPWR (*1)  26
          27         (Open)    (Open)        28
          29         GND       GND           30
          31         GND       -ATN          32
          33         GND       GND           34
          35         GND       -BSY          36
          37         GND       -ACK          38
          39         GND       -RST          40
          41         GND       -MSG          42
          43         GND       -SEL          44
          45         GND       -C/D          46
          47         GND       -REQ          48
          49         GND       -I/O          50

 *1 Terminating resistor power (jumper selectable: For input only, for
    input and output, or open)


 CN1   Differential type SCSI (M262xH) connector
 -----------------------------------------------
       Pin number    Signal    Signal    Pin number
       --------------------------------------------
          01         GND       GND           02
          03         +DB0      -DB0          04
          05         +DB1      -DB1          06
          07         +DB2      -DB2          08
          09         +DB3      -DB3          10
          11         +DB4      -DB4          12
          13         +DB5      -DB5          14
          15         +DB6      -DB6          16
          17         +DB7      -DB7          18
          19         +DBP      -DBP          20
          21         DIFFSENS  GND           22     (*1)
          23         (Open)    (Open)        24
          25         TERMPWR   TERMPWR (*2)  26
          27         (Open)    (Open)        28
          29         +ATN      -ATN          30
          31         GND       GND           32
          33         +BSY      -BSY          34
          35         +ACK      -ACK          36
          37         +RST      -RST          38
          39         +MSG      -MSG          40
          41         +SEL      -SEL          42
          43         +C/D      -C/D          44
          45         +REQ      -REQ          46
          47         +I/O      -I/O          48
          49         GND       GND           50

 *1 Differential Driver protection signal
 *2 Terminating resistor power (jumper selectable: For input only, for
    input and output, or open)


 CN1   Power connector
 ---------------------
       Pin number    Signal
       --------------------
          1          +12 VDC
          2          +12 VDC RETURN (GND)
          3          +5  VDC RETURN (GND)
          4          +5  VDC


 CNH1  PER default values setting
 --------------------------------
            | PER default value of the MODE SELECT parameter
        ----+-----------------------------------------------
 x      1-2 | Short  "0"
            | Open   "1"

 Set the default value of the PER (post error) flag of the read/write
 error recovery parameter (page code=1) and verify error recovery
 parameter (page code=7) of the MODE SELECT parameter according to
 table.

 The MODE SELECT parameter value specific to the user can be saved on
 the disk with the MODE SELECT command specification. There are no
 MODE SELECT parameter saved values on the IDD when the IDD is shipped
 from the factory. The value set with the terminal is used as the ini-
 tial value of PER flag when there are no saved values. When a saved
 value is generated by the user, the IDD reads it when power is turned
 on and operates using that value and this setting is ignored.


 CHN1  SCSI level setting
 ------------------------
   +-------+------------------------------------+---------+---------+
   |       |  INQUIRY data                      |         |         |
   |       +----------+-----------+-------------+         |         |
   | Mode  |Byte 2,   |Byte 3,    | Byte 7      | INQUIRY |  3 - 4  |
   |       |bits 2 to |bits 3 to 0| (Provided   | VPD     |         |
   |       |0 (ANSI   |(Response  | function)   | informa-|         |
   |       |version)  |data format|             | tion    |         |
   +-------+----------+-----------+-------------+---------+---------+
   | SCSI-2| '0,1,0'  | '0,0,1,0' |Indicates    | Valid   |         |
   | mode  |(SCSI-2)  | (SCSI-2)  |the function |         |  Open   |
   |       |          |           |of the IDD   |         |         |
   |       |          |           |for each bit.|         |         |
   +-------+----------+-----------+-------------+---------+---------+
   |       | '0,0,1,' |'0,0,1,0'  |             |         |         |
   | SCSI-1|ANSIX3.131|ANSIX3T9.2/|All bits '0' | Invalid |  Short  |
 x | CSS   |1986      |85-52      |             |         |         |
   | mode  |(SCSI-1)  |(CCS)      |             |         |         |
   +-------+----------+-----------+-------------+---------+---------+

 Set the display contens of data posted to the initiator from the IDD
 with the INQUIRY command according to table.

 When the SCSI-1/CCS mode is selected, parameters transfered by the
 MODE SENSE command are as follows.

    Page code 3F (all pages equipped in the IDD are transferred)

         Page 7 and page 8 are not transferred

         Page 1, page 2, page 4 are transferred with the specified
         length of CCS.

    When the page 1, page 2 or page 4 is specified individually, it is
    transferred with the specified length of CCS.

    When the page 7 or page 8 is specified individually, it is trans-
    ferred with the specified length of SCSI-2.

    For the recovery parameter of the VERIFY, the recovery parameter
    in page 1 is used.

 When the SCSI-1/CCS mode is selected and the REQUEST SENSE command is
 isssued with specifying the transfer byte length to 0, the IDD trans-
 feres the 4-byte sense data.

 Refer to SCSI Logical Specifications Manual for the details of the
 INQUIRY command, MODE SENSE command and REQUEST SENSE command.


 CNH1  Offline self-diagnostics setting
 --------------------------------------
        5-6   Short  Executed (diagnostic mode)
 x            Open   Stopped (normal operation mode)

 Set starting/stopping the IDD offline self-diagnostics according to
 table. The offline self-diagnostics tests the IDD controller func-
 tions and the basic read/write operation on the disk drive. In normal
 operations, this setting terminal must be opened.


 CNH1  UNIT ATTENTION report mode setting
 ----------------------------------------
 x      7-8   Short  For a command other than INQUIRY, REQUEST SENSE,
                     or PRIORITY RESERVE the IDD responsed with the
                     CHECK CONDITION status. (SCSI standard)
              Open   All received commands are executed normally.
                     (The CHECK CONDITION status caused by the UNIT
                     ATTENTION condition is not reported)

 Sets the response method against the received command when the IDD
 keeps the UNIT ATTENTION condition. This mode is set for system re-
 quirement, however, it is recommended to use the SCSI standard set-
 ting (setting at factory shipment)


 CNH1  Reselection retry setting
 -------------------------------
            | Retry count of RESELECTION phase
        ----+---------------------------------
 x      9-10| Short    (unlimited)
            | Open   10

 Set the retry mode of the RESELECTION phase according to table.


 CNH1  Reserved
 -----------------------------
       11-12         Reserved


 CNH1  SCSI bus parity setting
 -----------------------------
 x     13-14  Short  Executed
              Open   Not executed

 Set whether the parity bit check of the SCSI data bus is executed
 according to the table.


 CNH1  Synchronous mode transfer request setting
 -----------------------------------------------
 Set whether synchronous mode transfer request from the TARG is en-
 abled according to the table. When the synchronous mode data transfer
 is enable, the IDD responds the SYNCHRONOUS DATA TRANSFER REQUEST
 message to the INIT that issues the first command after power-on.

 x     15-16  Short   Enabled
              Open    Disabled

 This setting does not affect asynchronous mode transfer.

 When synchronous mode transfer is disabled, the IDD operates as
 follows:
   When the SYNCHRONOUS DATA TRANSFER REQUEST message is sent from the
   INIT, the IDD replys to that message and the DATA IN and the DATA
   Out phases of the SCSI bus can be executed in synchronous mode.
   The IDD does not send the SYNCHRONOUS DATA TRANSFER REQUEST message
   to the INIT.

 The maximum data transfer rate in synchronous mode is determined when
 the SYNCHRONOUS DATA TRANSFER REQUEST message is excahnged between
 the IDD and INIT.
 The INIT must determine the parameter sent to the IDD when the mes-
 sage is excahnged in consideration of the signal transfer character-
 istics of the system SCSI bus and the data reception capacity of the
 INIT.
 The IDD can transfer up to 10MB/s in synchronous mode. However, since
 the configuration of the SCSI bus and its transfer characteristics
 differ depending on the system, the maximum transfer rate in which
 data can be transfered in a stable condition must be determined for
 each system.

 For reference, the IDD data transfer rate in synchronous mode and the
 restrictions in the system configuration of the SCSI bus are shown
 below. The following values are rough standards. The values must be
 evaluated for each system.

 Single ended SCSI bus
    +----------------------+------------------+---------------------+
    |Maximum data transfer |Maximum length of |Number of connectable|
    |rate of the IDD (MB/s)|the SCSI cable (m)|SCSI devices         |
    +----------------------+------------------+---------------------+
    |    3.00 to 10.00     |        *         |         *           |
    +----------------------+------------------+---------------------+
    |    2.67 or less      |  6.00m  M62xF    |         8           |
    |                      | 25.00m  M26xH    |                     |
    +----------------------+------------------+---------------------+
    * The maximum SCSI cable length and the number of connectable
      SCSI devices must be determined for each system.


 CNH1  LED display requirement setting
 -------------------------------------
 x     17-18  Short   Light when the IDD operates.
              Open    Light when the IDD is ready.

 Set the display requirements of the LED on the front panel or exter-
 nal operator panel.


 CNH1  Motor start mode setting
 ------------------------------
 x     19-20  Short   The motor is started immediately after power
                      is turned on.
              Open    Starting the motor is controlled with the
                      START/STOP command.

 Set how to start the IDD spindle motor according to table. This set-
 ting only determines the operation mode when power is turned on.
 Stopping or restarting the spindle motor can be controlled with the
 START/STOP UNIT command for both modes.


 CNH1  Power supply to SCSI terminating resistor circuit on IDD
       (M262xF) Single-Ended type
 ---------------------------------------------------------------
 x     23-24  Short   Power is supplied to the terminating resistor
 x     21-22  Short   from IDD and TERMPWR pin. Power is supplied
                      to the TERMPWR pin from the IDD.

       23-24  Open    TERMPWR pin is not used. Power is supplied to
       21-22  Short   the IDD terminating resistor only from IDD.

       23-24  Short   Power is not supplied to the terminating
       21-22  Open    resistor from 21-22  Open the IDD. Power is
                      supplied to the IDD terminating resistor only
                      from the TERMPWR pin.

 When the IDD connects to a position other than both ends of the SCSI
 cable, do not mount the terminating resistor module on the IDD.

       +-----------------------------------------------------+
       |                     +------ CNH1 -----+   -+- +5V DC|
      +++                    | 23 24    22   21|    |        |
        | TERMPWR +------+   +-+--+-----+----+-+    + Diode  |
      S *---------+ FUSE +-----+  |     |    +------+        |
      C |26       +------+        +-----+----+               |
      S |                             +------+-----+         |
      I *-----------------------------+ Terminator |         |
        | SIGNAL             Mounted  | resistor   |         |
      +++                    in socket+------+-----+         |
       |                                     + GND           |
       +-----------------------------------------------------+


 CNH1  Power supply to terminal resistor circuit on SCSI
       (M262xH) Differential type
 ----------------------------------------------------------------
 x     21-22  Short   Power is supplied from the IDD
              Open    Power is supplied from TERMPWR pin only
                      (IDD power supplied is not used)

       +-----------------------------------------------------+
       |                     + CNH1 +              -+- +5V DC|
      +++                    | 22 21|               |        |
        | TERMPWR            +-+--+-+               + Diode  |
      S *----------------------+  |   +------+      |        |
      C |25                    |  +---+ Fuse +------+        |
      S |26                    |      +------+               |
      I *----------------------+                             |
        | TERMPWR                                            |
      +++                                                    |
       |                                                     |
       +-----------------------------------------------------+


 CNH2  For testing at factory
 ---------------------- -----
       1-2   Open     User setting inhibited
       3-4   Open     User setting inhibited

 The user must not be change CNH2 setting. (The IDD does not operate
 correctly when shorted)


 CNH4  Spindle sync connector
 ----------------------------
       Pin number    Signal
       --------------------
          01         GND IN
          02         SS IN
          03         GND OUT
          04         SS OUT


 CNH7  SCSI ID setting
 ---------------------
       SCSI ID    5-6    3-4    1-2
       ----------------------------
         0       Open   Open   Open
         1       Open   Open   Short
         2       Open   Short  Open
         3       Open   Short  Short
         4       Short  Open   Open
         5       Short  Open   Short
         6       Short  Short  Open
 x       7       Short  Short  Short

 1. Set the SCSI ID so that there are no duplicates between SCSI
    devices on the same SCSI bus.
 2. The priority of SCSI bus use in ARBITRATION phase is determinated
    by SCSI ID as follows: 7 > 6 > 5 > 4 > 3 > 2 > 1 > 0


 CNH7  Write protect setting
 ---------------------------
       7-8   Open      Write operation is inhibited.
 x           Short     Write operation is enabled.

 Enabling or disabling write protect function is set by these jumpers.
 By setting this write protect function, writing into disk medium is
 inhibited.


 CN5   External operator panel connector
 ---------------------------------------
       Pin number    Signal
       --------------------
          01        LED (V)
          02        -LED


 CN6   External operator panel connector
 ---------------------------------------
       Pin number    Signal
       --------------------
          01         GND
          02         -ID2
          03         GND
          04         -ID1
          05         GND
          06         -ID0



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
FUJITSU  M2622/M2623/M2624-F/FA/FB/H/HA/HB  OEM MANUAL 41FH5069E-01

 Installation direction
 ----------------------

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

 The tolerance of the angle is   5* from the horizontal plane.


 Notes of mounting
 -----------------
 The disk enclosure (DE) of the IDD serves as a signal ground (SG) and
 is insulated from the mounting frame (frame ground: FG). As this
 insulation is maintained after the IDD is mounted in the system, the
 following precautions must be followed.

 Generally, SG an FG are connected at one point in the system
 enclosure. Therefore, use following procedure to maintain the
 insulation when mounting the IDD:

 a) Use the frame with an embossed structure or the like to avoid
    contact between the DE base and FG. Mount the IDD with making a
    gap of 2.5 mm or more between the IDD and the frame of the system.

 b) The inward projektion of the screw from the IDD frame wall at the
    corner must be 4 mm or less.

 When the drive is mounted using side screw hole, don't use the center
 hole.


 External magnetic field
 -----------------------
 The drive should not be installed near the ferromagnetic body like a
 speaker to avoid the influence of the external magnetic field.


 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 requirement. For the DE surface temperature at opera-
 ting, the contact temperature at the measurement point must satisfy
 the specified requirement.

 The maximum ambient temperature with in 45* C.


 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 to pre-
 vent overload of the power supply unit.

 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. The specification of
 this noise filter is as follows:

       Attenuation:          40 dB or more at 10 MHz.
       Circuit construction: T-configuration is recommended.


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

 The maximum number of SCSI devices that can be connected to the SCSI
 bus is 8, including the host adapter, IDD, and other SCSI equipment.

 The connector for the SCSI cable must be an unshielded 50-contact
 socket which has two rows of 25-socket at 2.54 mm (0.1 inch) apart.
 It should also have a key way to prevent insertion in the wrong
 direction (bump type connector).

 The maximum length of the SCSI cable is as follows. If more than one
 SCSI device is connected, the total cable length must not exceed the
 following.

   6m cable length             Single-Ended type SCSI (M262xF)
  25m cable length             Differential type SCSI (M262xH)

 The use of a 25-pair twisted cable satisfying the following require-
 ments is recommended:

    Single ended type: Conductor size: 28 American Wire Gauge (AWG)
                                       or bigger
                       Characteristic Impedance: 100 to 132

 Each pair of wires in the 25-pair twisted cable must be connected to
 pins n and n+1 (where n is an odd number) on the interface connector.
 Cables having an identical impedance must be use on the same SCSI bus
 to reduce signal reflection and maintain transmission characteristics

 When a SCSI device is connected to the SCSI cable except at either
 end of the cable, connection to the SCSI connector must be at a
 branchpoint of the cable. If a SCSI device is connected to one end of
 the SCSI bus, no cable should be connected after the last SCSI device
 except when the cable has a terminating resistor.

 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.


 Power cable
 -----------
 IDDs must be star-connected to the DC power sypply (one to one con-
 nection) to reduce the influence of load variations.


 Signal ground connector
 -----------------------
 For DC ground, an SG terminal is mounted on the rear of the drive.
 A DC ground cable may be installed depending on the system require-
 ments. This cable is generally connected to the ground of the power
 supply unit. Connection between more than one IDD may be in a daisy
 chain.


 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 M262xF only!         Correct M262xF and M262xH

 SCSI cable                   SCSI cable
 ---------+                   ----------++-------X TERM
       +-xxx---+                    +---++--+
       | TERM  |                    |       |
       |       |                    |       |
       |  IDD  |                    |  IDD  |
       +-------+                    +-------+
       Correct M262xF only!         Correct M262xF and M262xH


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


 SCSI terminating resistor (M262xF only)
 ---------------------------------------
 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 module, 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


 External operator panel connector
 ---------------------------------
 When the external operator panel is not connected to CN6, CN6 should
 be opened. (default setting)

 When the external operator panel is connected, pins of CNH7 corres-
 ponding to the signals set by the external operator panel should be
 opened.

  CN6
 +------+
 | 1   2| ID2
 | 3   4| ID1
 | 5   6| ID0
 +------+


  CN5
 +---+
 | 1-+--------------------+
 | 2-+---------+<---------+
 +---+   external LED


 The output signals of pin 1 and pin 2 of CN5 actuate the external LED
 as same as LED on the front panel of the disk drive. The indication
 can be changed with a setting terminal. Any load other than the ex-
 ternal LED should not be connected to the LED-terminals.

 Setting of CN6 can be changed when power is on. The SCSI ID setting
 is valid after power is turned on again or the SCSI bus is reset.


 Confirming initial operations
 -----------------------------
 Do not move the drive when power is turned on!

 1. Initial operation in the case where the jumper is set so that
    motor starts at power-on.

    1. When power is turned on, the LED blinks an instant and the IDD
       executes initial self-diagnosis.
    2. If an error is detected in the initial self-diagnosis, the LED
       on the front panel blinks periodically. The spindle motor may
       or may not start rotating in this stage.
    3. When the LED display requirements are set to "READY status",
       the LED on the front panel lights 15 seconds after power is
       turned on.
    4. When the LED display requirements are set to "the IDD operates"
       the LED on the front panel remains off (when the initiator
       accesses the IDD via the SCSI bus, the LED lights).

 2. Initial operation in the case where the jumper is removed so that
    motor starts with a START/STOP command.

    1. When power is turned on, the IDD executes initial self-diag-
       nosis.
    2. If an error is detected in the initial self-diagnosis, the LED
       on the front panel blinks.
    3. The spindle motor does not start rotation until the START/STOP
       UNIT command for the start is issued. The INIT needs to issue
       the START/STOP UNIT command to start the spindle motor.
    4. The disk drive enters the READY status 15 seconds after the
       START/STOP UNIT command is issued. At this time, the IDD reads
       "system information" from the system space on the disk.
    5. When the LED requirements are set to "READY status", the LED on
       the front panel ligths as in step 4.
    6. When the LED display requirements are set to "in connection
       with SCSI bus", the LED blinks during command execution.

 3. Items to check if an error occurs.

    * Check that cables are mounted correctly.
    * Check that power and voltages are supplied correctly.
    * Check the setting of each jumper setting terminal. The initial
      operation depends on the setting of the motor start mode and LED
      display requirements.
    * If an error is detected in initial self-diagnosis, the LED on
      the front panel blinks. In this case, it is recommended to issue
      the REQUEST SENSE command from the initiator (host system) to
      obtain information (sense data) for error analysis.

    When the LED display requirements are set to "READY status", the
    LED is turned off while the drive continues command execution.
    However, since the LED is turned off for only one blink, the LED
    may seem to be turned on and off or not turned off at all.

    When the LED display requirements are set to "in connection with
    SCSI bus", the LED lights during the IDD is executing a command.
    Howerver, in some commands the lighting time is only an instant.
    Therefore it may seem that the LED blinks or the LED remains off.

    Since the IDD has the automatic readjustment function of positi-
    oning (seek) control, it automatically executes the adjustment
    operations with seek at specific intervals from power on (first
    adjustment: 5 minutes after power on). The seek sound is heard
    during the adjustment but htis does not indicate a drive error.


 Dismounting drives
 ------------------
 Take the drive offline.

 Disconnect system power before removing the drive. Do not remove
 mounting screws holding the cables and drive while power is on.

 Do not move the drive until it completely stops (30 seconds after
 spindle motor is stopped with START/STOP UNIT command or after
 power is turned off).


 FUJITSU DISK-SUPPORT
 --------------------
 Harddisk parameters for SUN-OS (UNIX)
 +--------+---------+---------+----------+-----+-------+
 |Disk Typ|Data Cyl.|alt. Cyl.|phys. Cyl.|Heads|sec/trk|
 +--------+---------+---------+----------+-----+-------+
 |M2622Fx |  1429   |    2    |   1431   |  7  |   64  |
 +--------+---------+---------+----------+-----+-------+
 |M2623Fx |  1151   |    2    |   1153   |  9  |   80  |
 +--------+---------+---------+----------+-----+-------+
 |M2624Fx |  1463   |    2    |   1465   | 11  |   63  |
 +--------+---------+---------+----------+-----+-------+



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
FUJITSU  M2622/M2623/M2624-F/FA/FB/H/HA/HB  OEM MANUAL 41FH5069E-01

 Media defects
 -------------
 The number of allowable media defects are as follows. The maximum
 defect length is 8 bytes.

 M2622:  160 and less
 M2623:  210 and less
 M2624:  260 and less

 High speed data transfer
 ------------------------
 The data transfer rate on the SCSI bus is 4MB/s maximum in asynchro-
 nous mode and 10MB/s in synchronous mode. Such a high data transfer
 rate on the SCSI bus can be useful with the large capacity buffer
 in the IDD.

 The maximum data transfer rate in asynchronous mode may be limited
 by the response time of the initiator and the length of SCSI bus
 length.
 The maximum data transfer in synchronous mode on the single-ended
 SCSI bus may be limited by the cable length and transmission charac-
 teristics of the SCSI bus.

 240KB data buffer
 -----------------
 Data is transfered between SCSI bus and disk media through the em-
 bedded 240KB data buffer in the IDD.

 Since the initiator can control the disconnect/reconnect timing on
 the SCSI bus by specifying the condition of stored data in the data
 buffer or empty condition of the data buffer, the initiator can per-
 form the effective input/output operations with utilizing high data
 transfer capability of the SCSI bus regardless of actual data trans-
 fer rate of the disk drive.

 Read-Ahead cache feature
 ------------------------
 After executing the READ command, the IDD reads automatically and
 stores (prefetches) the subsequent data blocks into the data buffer
 (Read-Ahead caching).

 The high speed sequential data access can be achieved by transfering
 the data from the data buffer without reaccessing the disk in case
 the subsequent command requests the prefetched data blocks.

 Command stack feature
 ---------------------
 The IDD has a command stack feature corresponding to up to 7 initia-
 tors. Therefore, the IDD can accept and stack an input/output command
 issued by another initiator even if the IDD is executing another
 command. The stack command is retrieved and executed in stacked order
 after the present command has completed.

 Landing zone
 ------------
 The actuator positions heads on the innermost landing zones over the
 disk when the power is off or the spindle motor is stopped.

 SCSI bus configuration
 ----------------------
 Up to eight SCSI devices can be connected to the SCSI bus, with any
 combination of the SCSI devices that operate as initiator and that
 operate as target.

 Each SCSI device on the bus has its own unique address (SCSI-ID: #n).
 For input/output operation, a peripheral device attached to the SCSI
 bus that operates as target is addressed in unit called as logical
 unit. A unique address (LUN: logical unit number) is assigned for
 each logical unit.

 The initiator selects one SCSI device by specifying that SCSI ID,
 then specifies the LUN to select the peripheral device for input/
 output operation.

 The IDD is constructed so that the whole volume of disk drive is a
 single logical unit, the selectable numbers of SCSI ID and LIN are as
 follows:
                     SCSI ID:  Selectable from 0 to 7
                     LUN:      0 (fixed)

   +-------------+  +-------------+  SCSI bus +----------+LUN=0
   | Host system +--+Host Adapter +-------+---+ IDD      |(fixed)
   |             |  |  ID #7      |       |   |   ID #0  |
   +-------------+  +-------------+       |   +----------+
                                          |   +----------+LUN=0
                                          +---+ IDD      |(fixed)
                                          |   |   ID #1  |
                                          |   +----------+
                                          |   +------------+
                                          +---+ Controller +--+----+--
                                          |   |   ID #2    | LUN0 LUN1
                                          |   +------------+

 Mean Time Between Failures (MTBF)
 ---------------------------------
 The estimated MTBF of the IDD during its life time is 200.000 hours
 after an initial 3-month period.

 Mean Time To Repair (MTTR)
 --------------------------
 MTTR is the average time taken ba a well-trined service mechanic to
 diagnose and repair a drive malfunction. The drive is designed for a
 MTTR of 30 minutes or less.

 Service life
 ------------
 Overhaul of the drive is not required for the first five years or
 20.000 power-on hours which ever earlier if handled correctly.

 Data security at power failure
 ------------------------------
 Integrity of the data on the disk is guaranteed against all forms of
 DC power failure except on blocks where a write operation was being
 performed. The above does not applied to formatting disks or assign-
 ing alternate blocks.

 DISCLAIMER
 ----------
 Failure of the M262xF/H intelligent disk drive is defined as a fai-
 lure requiring adjustments, repairs or replacement. Fujitsu is not
 responsible for drive failures caused by misuse by the user, poor
 environmental conditions, power trouble, host problems, cable fai-
 lures, or any failures not caused by the drive itself.



**********************************************************************
                      G   E   N   E   R   A   L
**********************************************************************
FUJITSU => GDT

 Tips & Hints about ICP controllers and other peripherals
 ========================================================

 Tagged queues and Fujitsu M 26xx harddisks
 ------------------------------------------
 Fujitsu Harddisks of the M26XX series do not support the SCSI-II
 feature tagged queues. You should disable this feature in the
 initialize disks menue of the GDTSetup program. An inquiry command
 shows, that the harddisk supports tagged queues (this is why you can
 enable it in the GDTSetup) but this is not true as stated by Fujitsu
 Germany.


