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Hard Drive: IBM: H3256-A3 256MB 3.5"/SL IDE / AT

H 3 2 5 6 - A 3    IBM
NO MORE PRODUCED                                      Native|  Translation
Form                 3.5"/SLIMLINE         Cylinders    1280|  872|     |
Capacity form/unform   256/      MB        Heads           3|   16|     |
Seek time   / track  14.0/ 4.0 ms          Sector/track     |   36|     |
Controller           IDE / AT              Precompensation
Cache/Buffer            96 KB SEGMENTED    Landing Zone
Data transfer rate    3.000 MB/S int       Bytes/Sector      512
                      8.300 MB/S ext PIO2
Recording method     RLL                            operating  | non-operating
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 65
Power: sleep              W     Humidity     %         8 90    |      5 95
       standby            W     Altitude    km    -0.300  3.000| -0.300 12.000
       idle               W     Shock        g        10       |
       seek               W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit   ON THE FLY
                                MTBF         h     250000
                                Warranty Month
Lift/Lock/Park     YES          Certificates     CSA,FCC,IEC380,IEC435,IEC9...



  |      +------------------------------------------------- |XX Power
  |      |                                                  |xx
  |      |                                                  |XX
  |      |                                                  |XX AT
  |      |                                                  |XX
  |      |                                                  |XX I
  |      |                                                  |XX N
  |      |                                                  |XX T
  |      |             Logic Card                           |XX E
  |      |                                                  |XX R
  |      |                                                  |XX F
  |      +---------------------------------------------+    |XX A
  |      Back Side of the Drive                    JP1+++   |XX C
  |                                                 : | |   |XX E
  |                                                 : | |   |
  |                                                JP7+++   |XX
  |                                                    +--- |XX Power



Jumper Setting

The seven-position jumper block shown below is used to select the
master or slave, the cable selection, and the LED output port.

                JP2   JP3
          JP1  Slave Cable               JP7
         Master  |   Selection           LED
           |     |    |   JP4  JP5  JP6   |
          +--+ +--+ +--+ +--+ +--+ +--+ +--+
          |1 | |3 | |5 | |  | |  | |  | |13|
          +--+ +--+ +--+ +--+ +--+ +--+ +--+
          +--+ +--+ +--+ +--+ +--+ +--+ +--+
          |2 | |4 | |6 | |  | |  | |  | |14|
          +--+ +--+ +--+ +--+ +--+ +--+ +--+

1. Jumpers for JP1, 2, and 3 should not be selected concurrently.

 2. JP1 is for Master, JP2 is for Slave, JP3 is for Cable Selection

 3. To enable Cable Selection mode, the JP3 jumper must be installed.
    In the Cable Selection mode, the drive address is determined as

       - When CSEL is grounded or at a low level, the drive address is
         0 (master).

       - When CSEL is open or at high level, the drive address is 1

    The CSEL signal, ATA interface pin 28, is controlled by the host

4. Position JP4/JP5/JP6 are not used.

5. JP7 is the position for an external LED.

 The Jumper Pin Assignments
 |JP|Pin No.|Status|Description                  |Signal Name |
 | 1|   1   |  --- | GND                         |            |
 |  |   2   |  IN  | -Device Address Select Line |   -C/+D    |
 | 2|   3   |  --- | NC (Slave position)         |            |
 |  |   4   |  --- | NC                          |            |
 | 3|   5   |  IN  | Cable Selection (Pin 28)    |            |
 |  |   6   |  IN  | -Device Address Select Line |   -C/+D    |
 | 4|   7   |  --- | NC                          |            |
 |  |   8   |  --- | NC                          |            |
 | 5|   9   |  --- | NC                          |            |
 |  |  10   |  --- | NC                          |            |
 | 6|  11   |  --- | NC                          |            |
 |  |  12   |  --- | NC                          |            |
 | 7|  13   |  OUT | +LED                        |   +LED     |
 |  |  14   |  OUT | -LED                        |   -LED     |


 - LED output (+LED pin 13)
   This pin has a maximum current source capability of +18 mA at a
   nominal condition. This pin is designed to drive an LED.

 - LED output (-LED pin 14)
   This pin has a current sink capability of -100 mA at 0.25V for the
   worst case. This pin is designed to drive an LED.

Default Setting
The default jumper setting at shipment is as follows.

 Position:|JP1| JP2| JP3| JP4| JP5 | JP6 | JP7
 Pin:     |1-2| 3-4| 5-6| 7-8| 9-10|11-12|13-14
 Jumper:  | ON| OFF| OFF| OFF| OFF | OFF | OFF
            |    |    |                     +-- No LED load.
            |    |    +------------------------ Cable Selection
            |    +----------------------------- Device ID = Slave
            +---------------------------------- Device ID = Master



Notes on Installation

Installation direction

     horizontally                           vertically
   +-----------------+             +--+                       +--+
   |                 |             |  +-----+           +-----+  |
   |                 |             |  |     |           |     |  |
 +-+-----------------+-+           |  |     |           |     |  |
 +---------------------+           |  |     |           |     |  |
                                   |  |     |           |     |  |
                                   |  |     |           |     |  |
 +---------------------+           |  +-----+           +-----+  |
 +-+-----------------+-+           +--+                       +--+
   |                 |
   |                 |

Drive Mounting
The drive functions in all axes (6 directions). Performance and error
rate stay within specification limits even if the drive is operated
in other orientations from which it was formatted.

For reliable operation, it is recommended to mount the drive in the
system securely enough to prevent excessive motion or vibration of
the drive during seek operation or spindle rotation, using
appropriate screws or equivalent mounting hardware. Consult with the
issuer of this specification for the actual application, if

The drive level vibration test and the shock test are to be conducted
with the drive is mounted to the table using four bottom screws
(6-32 UNC).

Identification Labels
The following labels are affixed to every hard disk drive shipped
from the manufacturing location in accordance with appropriate hard
disk drive assembly drawing.

  - A label contaning the IBM logo, IBM part number and the statement
    "Made by IBM Japan Ltd.".

  - A label containing the drive model number, date code, formatted
    capacity, place of manufacture, and UL/CSA/TUV logos.

- A bar code label containing the drive serial number.

- An user designed label per agreement.

The labels may be integrated with the other labels.

The maximum cable length from the host system to the HDD, plus the
circuit pattern length in the host system, cannot exceed 45.7 cm.

Interface Logic Signal Levels
The interface logic signal have the following electrical

  Inputs:  Input High Voltage    2.0 V min.
           Input Low Voltage     0.8 V max.

  Outputs: Output High Voltage   2.4 V min.
           Output Low Voltage    0.5 V max.

There is a choice of 2 power connections to this drive. One DC power
connector is designed to mate with AMP part 1-480424-0 (using AMP
pins P/N 350078-4). The other (3 pin) DC power connector is designed
to mate with MOLEX 5480-03 (using MOLEX pins 5479). Equivalent
connectors may be used. Pin assignments are shown below, as viewed
from the end of the drive.

   +-----+         +-------+
   |1 2 3|         |4 3 2 1|
   +-----+         +-------+
    | | +- GND      | | | +-- +12V
    | +--- +12V     | | +---- GND
    +----- +5V      | +------ GND
                    +-------- +5V

The drive must be protected against Electro-Static Discharge
especially when being handled. The safest way to avoid damage is to
put the drive in an anti static bag before ESD wrist straps etc. are

Drives should only be shipped in approved containers, severe damage
can be caused to the drive if the packaging does not adequately
protect against the shock levels induced when a box is dropped.
Consult your IBM marketing representative if you do not have an
approved shipping container.



General Features
- Sector format of 512 bytes/sector

- Close-loop actuator servo

- Dedicated head landing zone

- Automatic actuator look

- Interleave factor 1:1

 - Three segmented 32KB of buffer implementation with read look-ahead

- 96KB sector buffer

- ECC On The Fly (EOF)

- Automatic Error Recovery Procedures for Read and Write commands

- Self Diagnostics during Power On and resident diagnostics

- PIO Data Transfer - Mode 2

 Error Register
   |       Error Register              |
   | 7 | 6 | 5 | 4  |3 | 2  |  1  | 0  |

This register contains status from the last command executed by the
drive, or a diagnostic code.

At the completion of any command except Execute Drive Diagnostics,
the contents of this register are valid when ERR equals 1 in the
status register.

After a power on, a reset, or completion of an Execute Drive
Diagnostic command, this register contains a diagnostic code.

 Bit Definitions
 BBK       Bad Block. BBK = 1 indicates a bad block mark was detected
           in the requested sector's ID field.

 UNC       Uncorrectable Data Error. UNC = 1 indicates an
           uncorrectable data error has been encountered.

 IDNF(IDN) ID Not Found. IDN = 1 indicates the requested sector's ID
           field could not be found.

 ABRT(ABT) Aborted Command. ABT = 1 indicates the requested command
           has been aupported to a drive status error or an invalid
           parameter in an output register.

TK0NF Track 0 Not Found. T0N = 1 indicates track 0 was not found
(T0N) during a Recalibrate command.

 AMNF(AMN) Address Mark Not Found. AMN = 1 indicates the data address
           mark has not been found after finding the correct ID field
           for the requested sector.

Head Disk Assembly
The head disk assembly (HDA) is assembled in a clean room environment
and contains the disk and actuaor assembly. Air is constantly
circulated and filtered when the drive is operational. Ventilation of
HDA is accomplished via an absolute breather filter.

The spindle is directly driven by an in-hub, brushless, sensorless DC
drive motor. Dynamic braking is used to quickly stop the spindle.

The read/write heads are mounted in the actuator. The actuator is a
swing-arm driven by a voice coil motor. A closed-loop positioning
servo controls the movement of the actuator. An embedded servo
pattern supplies feedback to the positioning servo to keep the read/
write heads centered over the desired track.

The actuator assembly is balanced to allow vertical or horizontal
mounting without adjustment.

When the drive is stopped by a power-off condition, the actuator
automatically moves the head to a dedicated landing zone outside of
the data area, where the actuator is locked.

Cable Noise Interference
To avoid any degradation of performance throughput or error rate when
the interface cable is routed on top or comes in contact with the HDA
assembly, the drive must be grounded electrically to the system frame
by four screws. The common mode noise or voltage level difference
between the system frame and power cable ground or AT interface cable
ground should b ein the allowable level specified in the power
requirement section.

Unit Sound Power Level Testing
Sound power emission levels are measured according to ISO 7779. The
statistical upper limit of the A-weighted sound power levels given in
Bels relative to 1 pico Watt are shown in the following table.

  |Mode     |Statistical upper limit |
  |Idle     |               4.5 Bels |
  |Operating|               4.8 Bels |

Shipping Zone and Lock
A dedicated "shipping" (or "landing") zone on the disk, not on the
data area of the disk, is provided to protect the disk data during
shipping, movement, or storage. At power down, the heads are auto-
matically parked and a head locking mechanism secures the heads in
this zone.



IDE Installation Guide Generic

Installation requirements
To install an IDE drive inside your computer, you must have:

1 The documentation that came with your computer.

2 The documentation that came with your hard drive.

3 A small, flat blade screwdriver.

WARNING: Do not open the static-protective bag containing the drive
until instructed to do so. Static electricity can damage the drive.

Preparing the drive for installation
Master drive If this drive is the first or primary hard disk drive to
be installed inside your computer, check the manual that came with
your hard drive to locate the Master setting. If your drive is set to
a Master, do not change the jumper position.

Slave drive If this drive is the second or secondary hard disk drive
in your computer, you must change the jumper position on the drive to
Slave. Refer to the manual that came with your hard disk drive to
locate the Slave setting.

To change the jumper on the hard disk drive:

 1 Remove the drive from the static-protective bag and place it on top
   of the bag.

2 Refer to your manual and locate the pins.

 3 If you need to change the setting, grasp the jumper and pull it off
   the pins.

 4 Line up the two holes in the bottom of the jumper with the
   approprate two pins on the drive. Push the jumper onto the pins
   until the jumper is completely seated and covers both pins.

Installing the drive
For the specific information on installing a hard disk drive, refer
to the documentation that came with your computer. You will be
required to mount the drive inside your computer, connect signal and
power cables to the hard drive, and update the configuration

Handling precautions
01 Turn off all attached devices first; then turn off the computer.

 02 Unplug all the power cords from electrical outlets before starting

 03 Disconnect all power cables from your computer and attached
    devices before starting installation.

 04 Limit your movement. Movement can cause static electricity to
    build up around you.

05 Handle the drive carefully and by the edges.

06 Do not touch any exposed printed circuitry.

07 Prevent other people from touching the components or the drive.

 08 When you are installing the drive, touch the static-protective
    package containing the drive to a metal expansion-slot screw or
    other unpainted metal surface on the computer, for at least 2
    seconds. (This drains static electricity from the package and your
 09 When possible, remove the drive and install it directly into the
    computer without setting it down. If this is not possible, place
    the drive, component side up, on the static-protective bag on a
    flat surface until the drive is installed.
 10 Do not place the drive on the computer cover or on a metal table.

Note: Be sure to use the correct screws provided with your drive.
Using the wrong ones might cause damage to the drive.

Completing the installation procedure
The installation of the drive is complete. Reinstall the cover on the
computer or storage enclosure. Store these instructions and any extra
parts in a safe place in case you change your configuration.
After installing your hard disk drive, use the information that came
with your computer to reconfigure your system. When you power on your
system, turn on all attached devices first; then turn on the

If you have any problems at this point, turn off all attached
devices; then, turn off the computer and check that:

1 The cables are installed correctly

2 No options or cables are loose

 3 The jumpers are properly set Turn on all attached devices; then,
   turn on the computer. If you still have a problem, refer to the
   troubleshooting information in the documentation that came with
   your computer.

Update configuration
Whenever you add or remove an option from your computer, you must
update the configuration information. Your computer might have an
automatic configuration program, or you might have to follow a
specific procedure. For more information, refer to the documentation
that came with your computer.

Preparing the drive for use
Having successfully installed the hard disk drive, you need to
prepare it for use. Depending on the operating system you are using,
you might need to partition then format the hard disk. Refer to the
documentation that came with your operating system for information on
how to format your new drive.
To make the drive just installed your primary drive, you might need
to create a new system partition on the drive. For information on
creating a new system partition, refer to the documentation that came
with your operating system.

You might be able to solve a problem yourself. Before calling IBM,
you might want to try some or all of the following troubleshooting

1 Remove and reattach all drive cables

2 Remove and reseat the drive

3 Place the drive in a different slot, if one is available

 4 If your drive contains jumpers or switches, check that they are set
   as specified

 5 Reread any software instructions; be sure software settings are

6 Inspect the drive for damage, such as bent pins

 7 Check the computer manual for instructions about the installation
   of upgrades. Look for a section about system setup or system
   configuration. Follow all procedures.

 8 After completing these steps, reassemble the computer and connect
   the power cord

If you are still having problems and want to call IBM technical
support, have available as much of the following information as

1 Drive model or P/N and description

2 Computer manufacturer and model

3 Exact wording of error message (if any)

4 Description of the problem

5 Hardware and software configuration information for your system

If possible, be at your computer. Your technical support rep might
want to walk you through the problem during the call.

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