
M 2 2 3 0 A T    FUJITSU
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/HH              Cylinders     320|     |     |
Capacity form/unform     5/    7 MB        Heads           2|     |     |
Seek time   / track  95.0/18.0 ms          Sector/track   32|     |     |
Controller           MFM / ST412           Precompensation   128
Cache/Buffer               KB              Landing Zone      319
Data transfer rate    0.625 MB/S int       Bytes/Sector      256
                      0.625 MB/S ext
Recording method     MFM                            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       |      3
       seek               W     Rotation   RPM      3600
       read/write    27.0 W     Acoustic   dBA        45
       spin-up            W     ECC        Bit
                                MTBF         h      10000
                                Warranty Month
Lift/Lock/Park     NO           Certificates                                  

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
FUJITSU  M2230AT/M2233AT  OEM MANUAL B03P-4695-0023A

  +------------------------------------------------------+
  |                                                      |xx B cable
  |                                                      |xx card
  |                                                      |xx edge
  |                                                      |xx
  |                                                      |xx
  |                                             +------+ |
  |                                             | SW1  | |xx
  |                                 +-------+   +------+ |xx
  |                                 | SW2   |            |xx A cable
  |                                 +-------+            |xx card
  |                                                      |xx edge
  |                                                      |xx
  |                                                      |xx
  |                                                      |xx
  |                                                      |
  |                                                      |XX Power
  |                                                      |XX
  +------------------------------------------------------+


**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
FUJITSU  M2230AT/M2233AT  OEM MANUAL B03P-4695-0023A

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

 Drive Selected Signal
 ---------------------
 Control of DRIVE SELECTED Signal .... Key 1 in SW1
 "ON" side ... A drive is in a selecded state regardless of DRIVE
               SELECT 1   4, which means DRIVE SELECTED signal is
               always true ans all Input/Output signals are validated
               without selecting the drive.
 "OFF" side .. Drive Selected signal gets true and all Input/Output
               signals are validated only when a drive is selected
               with DRIVE SELECT 1   4.

 Drive Selection
 ---------------
 DRIVE SELECTION ..... Key 4   Key 7 in SW1
 Key 4   7 in SW1 are used to one logical number up to a maximum of 4
 drives. The relevant one of 4 keys is to turned "ON" while the others
 should be turned "OFF".

 +----------+---------------+
 | Drive    |Key No. in SW2 |
 | Number   +---+---+---+---+
 |          | 7 | 6 | 5 | 4 |
 +----------+---+---+---+---+
 |    1     | o | x | x | x |
 +----------+---+---+---+---+
 |    2     | x | o | x | x |
 +----------+---+---+---+---+
 |    3     | x | x | o | x |
 +----------+---+---+---+---+
 |    4     | x | x | x | o |
 +----------+---+---+---+---+
 o: "ON"
 x: "OFF"

 Input Control signal termination
 --------------------------------
 Input control signals onto the A cable of the interface are
 terminated by setting switch 4.
 All keys of SW4 on the last drive are to be turned ON while the other
 drive's SW4 must be turned OFF in a daisy chain connection.


**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
FUJITSU  M2230AT/M2233AT  OEM MANUAL B03P-4695-0023A

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

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

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


 The unit may be installed as figure above.
 In this case, installation horizontal rate shall be within 20
 degrees. However, when inclines as the disk side comes lower side
 installation horizontal rate shall be within 5 degrees.

 Never install PCA on the Top !!!


 Ambient temperature
 -------------------
 The operating temperature range of the drive is specified at a dis-
 tance of 3 cm from the drive.


 Multiple units connection
 --------------------------
 +-------------+ A cable      +--------------+
 |             +----------*---+  Drive 1     |
 |             +----------+---+              |
 |             | B cable  |   +--------------+
 |             |          *---+  Drive 2     |
 |             +----------+---+              |
 | Controller  | B cable  |   +--------------+
 |             |          *---+  Drive 3     |
 |             +----------+---+              |
 |             | B cable  |   +--------------+
 |             |          +---XX Terminator  |
 |             +--------------+  Drive 4     |
 |             | B cable      +--------------+
 |             |
 +-------------+

 Connection of units to its controller is shown in that Fiugre. The
 cable A (control signals) must be connected in series and the B
 cable (R/W signals) in parallel. The termination of control signal
 must be performed only at the last drive.

 The total control cable length in a multi-drive configuration should
 not exceed 6m.

 Power cable
 -----------
 +-----------------+  1 = +12 V
 |  4   3   2   1  |  2 = +12 V RTN
 +-----------------+  3 = + 5 V RTN
                      4 = + 5 V

 AC line noise
 -------------
 To eliminate AC line noise, a noise filter of the specifications
 given below should be incorporated in the AC input terminal of the
 disk drive power supply.
 Attenuation characteristic:  40 dB or greater at 10MHz
 Circuit configuration:       T type



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
FUJITSU  M2230AT/M2233AT  OEM MANUAL B03P-4695-0023A

 Media error
 -----------
 Cylinder 0, Head 0 and 1 are defect free.
 The number of defect in the M223XAT are as follows:

 M2230AT ..... max. 6
 M2233AT ..... max. 12

 Mean Time Between Failures (MTBF)
 ---------------------------------
 The estimated MTBF of this drive during its life time is 10,000
 hours.

 Mean Time To Repair
 -------------------
 MTTR is the average time taken by well-trained service mechanic to
 diagnose and repair a unit malfunction. The M223XAT is designed for a
 MTTR of 30 minutes or less.

 Service life
 ------------
 Overhaul of the M223XAT is not required for the first five year.

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

 Write Precompensation
 ---------------------
 Whenever two bits are written in close proximity to each other, a
 phenomenon called pulse superposition occurs, which tends to cause
 the two bits to move away from each other. This is a large factor
 contributing to bit shift.
 The effect of bit shift can be reduced by a technique called pre-
 compensation which, by detecting which bits will occur early and
 which bits will occur late, can effectivly minimize the shift by
 writing these bits in the opposite direction of the expected shift.
 Precompensation should be done at 128   319 cylinders, but may be
 done at all cylinders. The optimum amount of pre-compenation is 12
 nanseconds for both early and late written bits.


