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Hard Drive: NEC: D3781 426MB 3.5"/HH IDE / AT




D 3 7 8 1    NEC
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    1468|  825|     |
Capacity form/unform   426/      MB        Heads           9|   16|     |
Seek time   / track  14.0/     ms          Sector/track   63|   63|     |
Controller           IDE / AT              Precompensation
Cache/Buffer            64 KB              Landing Zone
Data transfer rate    2.365 MB/S int       Bytes/Sector      512
                            MB/S ext
Recording method     RLL                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle               W     Shock        g                 |
       seek          10.0 W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h      50000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

Layout

NEC D3781/3772 INSTALLATION GUIDE DEC. 92 REV. A

  +---------------------------------------------------------+
  |                                                         |XX
  |                                            TST+-+       |XX
  |                                          SLAVE| | S-+   |XX
  |                                         MASTER+-+ M-+   |XX I
  |                                        Drive      SMP-  |XX N
  |                                        Select     SYNC  |XX T
  |                                                         |XX E
  |                                                         |XX R
  |                                                         |XX F
  |                                                         |XX A
  |                                                         |XX C
  |                                                         |XX E
  |                                               E7  +-+   |X1
  |                                               +-+ +-+   |
  | +-+LED                                        +-+       |XX
  | +-+                                                     |XX Power
  +---------------------------------------------------------+

Jumpers

NEC D3781/3772 INSTALLATION GUIDE DEC. 92 REV. A

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

 Drive Select
 ------------
      +----+
      |xxxx| Master (default configuration)
      |o  o| Slave
      |o  o| TST
      +----+

 SMP-SYNC
 --------
     +----+
     |o  X|M
     |o  X|S
     +----+

Install

NEC D3735/3781/3772 INSTALLATION GUIDE DEC. 92 REV. A

NOTES ON INSTALLATION
=====================

First install the drive with the components side to the bottom.
Connect the system power and interface cables to the drive
connectors. Both connectors are keyed and can only be connected one
way. The interface connector may not be keyed. In this case check
if the red edge of the interface cable is connected to the pin 1 of
the drive connector.

 After installing the hardware please turn on your computer system
 and run the setup program. Please identify which model has to be
 installing and use the NEC recommended drive parameter for the set up
 setting. For this purpose edit the logical parameters into the
 "User type 47/48". The IDE interface accept two drives
 (Master/Slave). For a dual drives installation jumper both drives.
 The Master/Slave operation is guranteed only with NEC disk products.
 In order to install DOS please run the DOS program FDISK and Format
 C:/s accordingly.
 In case of installation trouble please contact NEC hotline:
              Tel. 49/89/93006 708

Caution: IDE drives don't need a low level format. If a new low
level format become neccessary, please run only qualified programs
for IDE devices like WDFMT.EXE by use of physical parameters.

Features

NEC NEC DRIVES INSTALLATION GUIDE DEC. 92 REV. A

NEC drives
-----------
The NEC IDE/SCSI drives are designed to work in the IBM AT and
compatible systems and gurantee the operation with any standard IDE
and SCSI Controller. Further, the NEC drives provide compatibility to
the ATA/SCSI CAM and ANSI (X3-131-199x) standard as well as to all
known operating systems.













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