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Hard Drive: MAXTOR: 7345A 345MB 3.5"/SL IDE / AT

7 3 4 5 A    MAXTOR
NO MORE PRODUCED                                      Native|  Translation
Form                 3.5"/SLIMLINE         Cylinders    2233|  790|     |
Capacity form/unform   345/      MB        Heads           4|   15|     |
Seek time   / track  14.0/ 3.0 ms          Sector/track     |   57|     |
Controller           IDE / AT              Precompensation
Cache/Buffer            64 KB LOOK-AHEAD   Landing Zone
Data transfer rate    3.750 MB/S int       Bytes/Sector      512
                      9.000 MB/S ext
Recording method     RLL 1/7                        operating  | non-operating
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 60
Power: sleep              W     Humidity     %         5 95    |      5 95
       standby            W     Altitude    km    -0.061  3.048|
       idle           3.0 W     Shock        g        10       |     70
       seek               W     Rotation   RPM      3551
       read/write     3.2 W     Acoustic   dBA        32
       spin-up            W     ECC        Bit   REED SOLOMON,WITH 11BIT BU...
                                MTBF         h     300000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates     CSA,FCC,IEC380,TUV,UL1950,VDE



  |                                            +-+-+-+-+     |
  |                                            +++++++++     |
  |                                         J25-+ |J23+--J22 XX
  |                                         J24---+    +-+   XX
  |                                                    +-+J20XX
  |                                                    +-+J19XX
  |                                                    +-+J18XX J1
  |                                                    +-+J17X*
  |                                                    +-+J16XX
  |                                                          XX
  |                                                          XX
  |                                                          XX
  |                                                          XX1-2
  |                                                          | 1
  |                                                          XX Power
  |                                                          XX J2



Jumper setting

Note: Jumpers J17, J18, J24, and J25 factory reserved.
Jumper J19 may be used to store shunt if used in slave mode.
Abnormal operation may occur if reserved jumpers are altered.

 J16  I/O Channel Ready
      CLOSED  Option Enabled
      OPEN    Option Disabled (default)

 J20  Master/Slave
      J20 CLOSED  Only drive in single drive system (Default)

      J20 CLOSED  Master in dual drive system

      J20 OPEN    Slave in dual drive system

 J22/J23  SYNC Spindle Control
      J22 OPEN    Sync Slave
      J22 CLOSED  Sync Master

      J23 OPEN    Sync Spindle Disabled (Default)
      J23 CLOSED  Sync Spindle Enabled



Notes of Installation

Installation direction

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

The drive will operate in all axis (6 directions).

Recommended Mounting Configuration
Maxtor 7000 Series drive design allows greater shock tolerance than
that afforded by larger, heavier drives. The drive may be mounted in
any attitude using four size 6-32 screws with 1/8" maximum

Allow adequate ventilation to the drive to ensure reliable drive

Air Filtration System
All 7000 Series drives are designed to operate in a typical
office environment with minimal environmental control. Over the life
of the drive, a 0.3 micron filter and breather filter (located within
the HDA) maintain a clean environment to the heads and disks.

Read/Write Electronics
An integrated circuit mounted within the sealed enclosure (near the
read/write heads) provides one of four head selection (depending on
the model), read preamplification, and write drive circuitry.

Read/Write Heads and Disks
Four low mass, low force read/write heads record data on two 3.5"
diameter disks. Maxtor uses a sputtered thin film medium on all
disks for 7000 Series drives.

Drive Meachanism
A brushless DC direct-drive motor rotates the spindle at 3,551 RPM
( 0.1%). The dynamically balanced motor/spindle assembly ensures
minimal mechanical runout to the disks. A dynamic brake provides a
fast stop to the spindle motor upon power removal. The speed
tolerance includes motor performance and motor circuit tolerances.

Voice Coil Actuator
All 7000 Series drives employ a rotary voice coil actuator which
consists of a moving coil, an E-block or actuator arm assembly, and
stationary magnets. The actuator moves on a low-mass, low-friction
center shaft. The low friction generated contributes to fast average
access time and low power consumption.

Automatic Headpark and Lock Operation
Immediately following power-down, dynamic braking of the spinning
disks delays momentarily and lets the heads move to an inner
mechanical stop. A small fixed magnet holds the heads in place as the
disk spin down. The heads are released only when power is again

64K Look-Ahead Cache
Caching with look-ahead read decreases access time to sequential data
in the drive by temporarily placing small amounts of data in high
speed memory. Cache may contain from 0 to 128 sectors.

How Look-ahead Cache Functions
In the absence of an error, corrected data, or an interrupt command,
the drive caches not only requested sectors, but "look-ahead" and
caches all remaining physical sectors until cache is full. The
"look-ahead" feature prepares the drive to transfer cached data when
the host request it (preventing access time delays). Commands are
interrupt driven, so if the drive is performing a look-ahead cache
when a command is received, it will stop caching and process the

Resets and Write or Write Long commands to any of the cached sectors
invalidate the whole cache. Sectors on a track are cached until an
error occurs, until corrected data is read, or until a host command
interrupts the drive.

Dual Drive Support
Two drives may be accessed via a common interface cable, using the
same range of I/O addresses. The drives are jumpered as drive 0 or 1
(Master/Slave), and are selected by the drive select bit in the
Drive/Head register of the task file.

All Task File registers are written in parallel to both drives. The
interface processor on each drive decides whether a command written
to it should be executed; this depends on the type of command and
which drive is selected. Only the drive selected executes the command
and activates the data bus in response to host I/O reads; the drive
not selected remains inactive.

A master/slave relationship exists between the two drives: drive 0 is
the master, and drive 1, the slave.

Sector Address Translation
All 7000 Series drives feature a Universal Translate Mode. In an
AT-class system, the drive may be configured to any specified
combination of cylinders, heads, and sectors (within the range of the
drive's formatted capacity).

The 7345A powers-up in the Translate Mode:

 Cylinders  Heads  Sectors
   790       15       57

Interface Connector
All 7000 Series AT drives have a 40-pin interface connector mounted
on the PCBA. The drive may connect directly to the host; or it can
also accommodate a cable connection (maximum cable length: 18

(Striped Edge = Pin 1)



Maxtor 7000 Series AT disk drives are 1" high, 3.5" random access
storage devices which incorporate an on-board AT controller. Maxtor
engineers have applied recent advances in hard drive technology to
the design and manufacture of these drives. High data transfer rates
and fast access times make the 7345A especially well-suited to high-
end desktop and entry level workstation applications.

Defect Management
The 7345A has three (3) spare sectors per cylinder, located at the
end of each cylinder. Upon detection of a bad sector that has been
reassigned, the next sequential sector is used.

The first spare sector makes up for the loss of sector 3, and so
maintains the sequential order of data, with 2 spare sectors still
allocated for that cylinder. This push down method assures maximum

In the rare occurrence that the number of reassigned bad sectors
exceedS the number of spare sectors allocated for that cylinder, an
alternate track at the inner diameter of the disk is used. The 7345A
has four (4) alternate tracks.

Error Correction Code
The 7345A uses a Reed-Solomon code for error detection and
correction. The error correction polynomial can correct one error
burst with a maximum of 11 bits. Individual bursts ( 11 bits) are
corrected without any resulting performance degradation.

Zone Density Recording
The disk capacity is increased with bit density management - common
with Zone Density Recording. Each disk surface is divided into 7
circumferential zones. All tracks within a given zone contain a
constant number of data sectors. The number of data sectors per track
varies in different zones; the outermost zone contains the largest
number of data sectors, and the innermost contains the fewest.

 Seek Time
       |Track-to-Track         msec. typ. |   3    |
       |Average                msec. typ. |  14    |
       |                       msec. max. |  27    |
       |Controller overhead    msec.      |   1    |
       |Latency                msec. avg. |   8.45 |

Execute Drive Diagnostics
Commands the drive to implements the internal diagnostics tests.
(These tests are executed only upon command receipt; they do not run
automatically at power up or after a reset.)

The drive sets BSY immediately upon receiving this command.

This table presents the codes and their descriptions:

Note that the value in the Error register should be viewed as a
unique 8 bit Code.

   Error Code   Description
       01       no error detected
       02       formatter device error
       03       sector buffer error
       04       ECC circuitry error
       05       controller microprocessor error
       8x       slave drive failed

                Note: If a slave drive fails diagnostics, the master
                drive OR's 80 hex with its own status, and loads that
                code into the Error register.

                If a slave drive passes diagnostics (or a slave is
                absent), the master drive OR's 00 with its own status
                and loads that code into the Error register.



 1. Install a 40 pin Data Cable ensuring that pin 1, which can be
    identified by the striped edge of the cable, is closest to the
    power connector on the drive.

2. Install a DC power cable to the back of the drive.

 3. Verify the jumper configurations for Master/Slave operation
    (Note:  Master will be the bootable drive. The slave will not
    be bootable.) Also make sure the existing C: drive is jumped
    to be the Master in a two drive system, not the only drive in
    the system.

4. Apply power to the computer.

 4a. When memory test is complete go into your system's Standard
     CMOS set-up.
     (Note: There are various ways to get into CMOS set-up, please
     refer to system's manual for instructions.)

 4b. If your system's BIOS supports a user programmable drive
     type, program the BIOS with the default parameters of your
     drive. If your system does not support a user programmable
     drive type choose parameters that closely match but do not
     exceed the drives MegaByte capacity. Escape from set-up
     then choose write to CMOS and exit.

 5. Boot from a DOS diskette that has FDISK.EXE and FORMAT.COM on
    it. At the A> prompt type in FDISK. At the menu options select
    option 1 to create a DOS partition. Another menu will appear
    and from those options choose 1 to create a Primary DOS
    partition. Select yes to make 1 large partition and it will
    automatically become active. Then escape from FDISK.

 6. At the A> prompt type in FORMAT C:/S This does a high-level
    format on the drive and transfers the system files in order for
    the drive to be bootable. (Note: IDE drives are low-level
    formatted from the manufacturer and only need a high-level

    To configure the drive as a slave drive repeat steps 1-4 and
    proceed with steps 5a. and 6a. as follows:

  5a. At the C> prompt type in FDISK. When the menu options appear
      select option 5 to switch to the second drive. Enter fixed
      disk drive number 2. Then choose option 1 to create a DOS
      partition, then select option 1 again to create a Primary DOS
      partition or option 2 to create an Extended DOS partition.
      (Note: C and D drives will always be the Primary partitions
      but only the Primary partition on C: will have a status of

  6a. Proceed with a high-level format on the drive by typing FORMAT
      D: (Note: Make sure the correct drive letter has been selected
      for format).

 7. The drive is now bootable. As a test remove the DOS diskette
    from A and press reset to reboot the computer,  a  C> should be
    displayed, the drive is now ready for operation.

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