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Hard Drive: NEC: D3725-351 730MB 3.5"/SL ATA2 FAST




D 3 7 2 5 - 3 5 1    NEC
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        | 1416|     |
Capacity form/unform   730/      MB        Heads           4|   16|     |
Seek time   / track  11.0/ 3.0 ms          Sector/track     |   63|     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           384 KB SEGMENTABLE  Landing Zone
Data transfer rate    7.000 MB/S int       Bytes/Sector      512
                     16.600 MB/S ext PIO4
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 60
Power: sleep              W     Humidity     %         8 80    |      8 90
       standby            W     Altitude    km                 |
       idle               W     Shock        g         5       |     75
       seek           4.0 W     Rotation   RPM      4090
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     300000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

Layout

NEC D3723/3725 JUMPER SETTING

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                 SW1+--4 |XX
  |                                                    |  | |XX PCAT
  |                                                    +--1 |XX I/F
  |                                                  +++++  |XX
  |                                               JP1+++++  |XX
  |                                                 RESERVED|XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |+-+J8                                                    |XX
  |+-+LED                                                   |
  |                                                         |XX
  |                                                         |XX
  +---------------------------------------------------------+

Jumpers

NEC D3723/3725 JUMPER SETTING

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

                                               |  |
 SW1                                           |  |
  +---------------+ON                         ++  ++
  |+-+ +-+ +-+ +-+|                            \  /
  ||x| |x| |x| |x||                             \/
  |+-+ +-+ +-+ +-+|                       AT IF Connector Side
  +-1---2---3---4-+OFF
    |   |   |   +-------------- ALWAYS SETS OFF
    |   |   +------------------ ALWAYS SETS OFF
    |   +---------------------- CSEL (Cable Select)
    |                           ON - effective
    |                           OFF - ineffective
    +-------------------------- M/S
                                ON - MASTER
                                OFF - SLAVE

JP1 Connector
-------------
All pins Factory use!
DON'T USE!

 J8 LED Connector
 ----------------
        2  1
     +--------+
     |  |  |  |
     +--+--+--+
     ++++-++-++
      +++-++-+
       |   +---- Anode Side
       +-------- Cathode Side

Install

NEC DSE-1340/2010/2550/D3725/3727/3745/3747 QUICK REFERENCE

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

Drive mounting
--------------

     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
      UNACCEPTABLE!                                UNACCEPTABLE!
      Never install PC board on the Top!













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