
D 5 2 3 4    NEC
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders     310|     |     |
Capacity form/unform    15/   19 MB        Heads           6|     |     |
Seek time   / track  85.0/18.0 ms          Sector/track   17|     |     |
Controller           MFM / ST506           Precompensation
Cache/Buffer               KB              Landing Zone
Data transfer rate    0.625 MB/S int       Bytes/Sector      512
                      0.625 MB/S ext
Recording method     MFM                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle               W     Shock        g                 |
       seek               W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h      11000
                                Warranty Month
Lift/Lock/Park     NO           Certificates                                  

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
NEC      MFM DISKS

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                         |XXJ2
  |                                                         |XX
  |                                                         |XX
  |                                 Terminator  +-------+   |x J4
  |                                 Resistor    |  SW1  |   |
  |                                 ON/OFF Switch-------+   |XX
  |                                                         |XX
  |                                                         |XXJ1
  |                                                         |XX
  |                                 Drive Address-------+   |XX
  |                                 Switch      |  SW2  |   |XX
  |                                             +-------+   |XX
  |                                                         |XX
  |                                                         |
  |                                                         |XXPower
  |                                                         |XXJ3
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
NEC      MFM DISKS

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

 D512X, D5146 etc.
 -----------------
  +-----------------+
  | x . . . . . . . | ON
  | . x x x x x x x | OFF
 DS-1-2-3-4-------R-+
    +-+-+-+       +------------- Radial Bit, Always set to OFF
      |
      +-------- Drive Select (set only one bit to ON)

   Terminator Res.
  +-----------------+
  | x x x x x x x x |ON
  | . . . . . . . . |OFF  Terminator ON, means active
  +-----------------+




 D3126, D3142, D3146H, D51X6H etc.
 ---------------------------------
  SW2
  +---------+
  | x . . . | ON
  | . x x x | OFF
 DS-1-2-3-4-+
    +-+-+-+
      |
      +-------- Drive Select (set only one bit to ON)

  SW1  Terminator Res.
  +-----------------+
  | . x x x x x x x |ON
  | x . . . . . . . |OFF  Terminator ON, means active
  +-R---------------+
    +------------------ Radial Bit, always set to OFF!


 Only the last drive on the cable must be terminated.


 J1 Connector for control signal interface
 J2  Connector for data signal interface
 J4  Frame Ground



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
NEC      MFM DISKS


 Installation Procedure
 ----------------------
 Set the correct setup type and perform a low level format, in the
 most cases can the media defect list be entered in this step. If you
 cannot find a correct Setup Type (esp. for D3142) use either a lower
 cylinder count or special disk installation programms like DISK
 MANAGER from ONTRACK or SPEEDSTOR from STORAGE DIMENSIONS.

 Run under DOS FDISK and DOS FORMAT, the drive becomes bootable with
 the command: FORMAT C:/s.


