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Hard Drive: MAXTOR: 71050A 1050MB 3.5"/SL ATA2 FAST

7 1 0 5 0 A    MAXTOR
NO MORE PRODUCED                                      Native|  Translation
Form                 3.5"/SLIMLINE         Cylinders        | 2045|     |
Capacity form/unform  1050/      MB        Heads           5|   16|     |
Seek time   / track  12.0/ 2.0 ms          Sector/track     |   63|     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           256 KB              Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                     11.100 MB/S ext PIO3
Recording method     RLL 1/7                        operating  | non-operating
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 71
Power: sleep          0.1 W     Humidity     %         5 95    |      5 95
       standby        0.1 W     Altitude    km    -0.305  3.048|
       idle           4.1 W     Shock        g        35       |    100
       seek           5.0 W     Rotation   RPM      4500
       read/write     4.9 W     Acoustic   dBA
       spin-up        9.8 W     ECC        Bit
                                MTBF         h     300000
                                Warranty Month        24
Lift/Lock/Park     YES          Certificates                                  


MAXTOR 71050/71626/71260/71084/7813/7541AP QUICK REFERENCE

  |                                          J20******      |
  |         COMPONENT SIDE                      ******      |XXI
  |                                                         |XXN
  |                                                         |XXT
  |                                                         |XXE
  |                                                         |XXR
  |                                                         |XXF
  |                                                         |XXA
  |                                                         |XXC
  |                                                         |XXE
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |  1
  |                                                         |XX Power
  |                                                         |XX
  +---------------------------------------------------------+  1


MAXTOR 72004/71670/71336/7668-A/AP REFERENCE MANUAL #1333 REV.C '96

Jumper Setting

 Jumper Designation
     +---------------- J20 Master/Slave
     |  +------------- J21 FACTORY RESERVED!
     |  |  +---------- J22 FACTORY RESERVED!
     *  *  *  *  *
     *  *  *  *  *
              |  |
              |  +---- J24 Cable Select
              +------- J23 Write Cache

 J20 Master/Slave
 J20 CLOSED  Only drive in single drive system (default)
     CLOSED  Master drive in dual drive system
     OPEN    Slave drive in dual drive system

 J23 Write Cache
 J23 OPEN   Write Cache enabled (default)
     CLOSED Write Cache disabled

 J24 Cable Select
 J24 OPEN   Cable Select disable (default)
     CLOSED Cable Select enabled

Jumpers J21 and J22 are factory reserved.

A spare shunt is shipped between J23 and J24.

 DC Power connector
  pin 1    +12 VDC
  pin 2    +12 Volts Return
  pin 3    + 5 Volts Return
  pin 4    + 5 VDC


MAXTOR 71626/71260/71084/7541-A/AP PRODUCT MANUAL #1303 REV.F 11/95

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
penetration and a maximum torque of 5-inch pounds.

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
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 Mechanism
A brushless DC direct-drive motor rotates the spindle at 4,480 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

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,
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. When J20 is closed (factory
default), the drive assumes the role of master; when open, the drive
acts as a slave. In single drive configurations, J20 must be closed.

Cable Select
CSEL (cable select) is an optional feature per ATA CAM specification.
Drives configured in a multiple drive system are identified by CSEL's

- If CSEL is grounded, then the drive address is 0.
- If CSEL is open, then the drive address is 1.

If the Cable Select jumper (J24) is installed, the Master/Slave
jumper (J20) will be ignored.

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).

These drives powers-up in the Translate Mode:

 Model     |Cylinders |Heads |Sectors
 71050A    |  2045    | 16   | 63
 71626A/AP |  3158    | 16   | 63
 71260A/AP |  2448    | 16   | 63
 71084A/AP |  2105    | 16   | 63
 7541A/AP  |  1052    | 16   | 63

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)

Buffer Segmentation
The data buffer is organized into three segments: the read buffer,
the write buffer, and an micro controller scratch pad. The read
segment occupies half of the buffer and operates as a circular read-
ahead buffer. The write segment occupies the other half. During write
operations, it contains the host write data. Commands ATA Read Buffer
(E4) and ATA Write Buffer (E8) are implemented per CAM specification

Read-Ahead Mode
Normally, this mode is active. Following a read request, disk read-
ahead begins on the first sector and continues sequentially until the
buffer is full. If a read request is received during the read-ahead
operation, the buffer is examined to determine if the request is in
the cache. If a cache hit occurs, read-ahead mode continues without
interruption and the host transfer begins immediately.


MAXTOR 71626/71260/71084/7541-A/AP PRODUCT MANUAL #1303 REV.F 11/95

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 them especially well-suited to desktop and
workstation applications.

Defect Management Zone (DMZ)
Each drive model has a fixed number of spare sectors per DMZ:
71626A/AP = 6,
71260A/AP = 5,
71084A/AP = 4 and
7541A/AP = 2
all of which are located at the end of each DMZ. Upon detection of a
bad sector that has been reassigned, the next sequential sector is

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

In the rare occurrence that the number of reassigned bad sectors
exceed the number of spare sectors allocated for that cylinder, an
alternate track area in Zone 6 of the disk is used. All models
have five (5) alternate tracks per surface.

Error Correction Code
On-the-fly Hardware ECC
41 bits, single burst, guaranteed
17 bits, double burst, guaranteed

Software ECC Correction
113 bits, single burst, guaranteed
17 bits, five burst, guaranteed

Zone Density Recording
The disk capacity is increased with bit density management - common
with Zone Density Recording. Each disk surface is divided into 10
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.

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)        |
                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.

EISA Type "B" and Type "F" DMA Modes
Direct Memory Access (DMA) transfers improves system performance by
significantly improving troughtput.

Physical Configuration Sectors per track
Zone 1 = 156 Zone 2 = 154 Zone 3 = 150
Zone 4 = 140 Zone 5 = 132 Zone 6 = 126
Zone 7 = 120 Zone 8 = 108 Zone 9 = 100
Zone 10 = 90

Data transfer rate (MBytes per second)
To from media

Zone 01 = 8.10 Zone 06 = 6.50
Zone 02 = 8.02 Zone 07 = 5.94
Zone 03 = 7.68 Zone 08 = 5.55
Zone 04 = 7.18 Zone 09 = 5.08
Zone 05 = 6.80 Zone 10 = 4.61

Logical Block Addressing
The Logical Block Address (LBA) mode can only be utilized into
systems that support this form of translation. The cylinder, head and
sector geometry of the drive, as presented to the host, differs from
actual physical geometry.

The host AT computer may access a drive of set parameters: number of
cylinders, heads, and sectors per track, plus cylinder, head and
sector addresses. However, the drive can't use these host parameters
directly because of zoned recording techniques. The drive translates
the host parameters to a set of logical internal addresses for data

The host drive geometry parameters are mapped into an LBA based on
this formula:

        = (HSCA-1)+HSPTx(HHDA+HNHDxHCYA)     (2)

 where  HSCA = Host Sector Address, HHDA = Host Head Address
        HCYA = Host Cylinder Address, HNHD = Host Number of Heads
        HSPT = Host Sectors per Track

The LBA is checked for violating the drive capacity. If it does not,
the LBA is converted to physical drive cylinder, head and sector
values. The physical address is then used to access the data stored
on the disk and other drive related operations.

Installation Steps
Pre-loaded Software on Drive
This Maxtor hard drive is factory configured with a 112MB partition
containing Max Blast Disk Manager installation software by Ontrack
Systems. Please leave this partition intact until you choose the
appropriate installation option.

As a precautionary measure, Maxtor recommendeds that you download a
copy of the MaxBlast software to a blank diskette even if you choose
an alternate high-level formatting method.

Install a 40-pin ribbon connector. The striped edge of this cable
represents pin 1 and must be oriented towards pin 1 at the drive
connector and at the host connector.

Install a DC power connector...

If AT BIOS supports user programmable parameters, program System BIOS
with one of these default Parameters.

Model Cylinders Heads Sectors Capacity
71262AP 3158 16 63 1,626 MB
71260AP 2632 16 63 1,260 MB
71084AP 2105 16 63 1,084 MB
7813AP 1579 16 63 813 MB
7541AP 1052 16 63 541 MB

BIOS does not support programmable drive type, choose parameters that
closely match, but do not exceed, the drive's formatted capacity.

The drive is now ready for partitioning and high-level formatting
with any operating system. For example:

          Partition the drive using the FDISK command from MS-DOS
          version 3.3 of higher.
          High level format the drive using the FORMAT command from
          MS-DOS version 3.3 or higher.

Secure the drive in a suitable drive bay with 6-32 x 1/4" screws.

WPC and Landing Zone BIOS entries do not need a specific number for
proper operation. Maxtor AT interface hard drives will ignore and
override any numbers programmed.

Important - Please Read
This Quick Reference is intendened only for experienced engineers and
technicans. If you are not familar with the procedures described
here, please have a qualified computer technican perform drive
handling and installation.



 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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