
1 8 4 0 5 3    COMPAQ
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    2856|  944|     |
Capacity form/unform   270/      MB        Heads           2|   14|     |
Seek time   / track  14.0/ 5.0 ms          Sector/track     |   40|     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           128 KB SEGMENTED    Landing Zone
Data transfer rate    3.000 MB/S int       Bytes/Sector      512
                     13.300 MB/S ext DMA
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         4 50    |    -40 65
Power: sleep          0.1 W     Humidity     %         8 85    |      5 95
       standby        0.1 W     Altitude    km            3.000|        12.000
       idle           3.7 W     Shock        g        10       |     70
       seek           4.6 W     Rotation   RPM      3600
       read/write     4.6 W     Acoustic   dBA        34
       spin-up            W     ECC        Bit   ON THE FLY,REED SOLOMON
                                MTBF         h     300000
                                Warranty Month        24
Lift/Lock/Park     YES          Certificates     CSA,FCC,TUV,UL1950,VDE



**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
QUANTUM  MAVERICK 270/540AT  PRODUCT MANUAL 81-106844-01, 6/20/1994


  +---------------------------------------------------------+
  |                                             JP1+-+-+-+  |XX
  |                                                +-+-+-+  |XX
  |                                                SP DS CS |XX
  |                                                         |XX
  |                                                         |XX AT-Bus
  |                                                         |XX
  |                                                         |XX J11C
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX1
  |                                                         |xx J11B
  |1+LED                                                    |XX Power
  |++J12                                                    |xx
  |                                                         |XX Power
  +---------------------------------------------------------+xx J11A



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
QUANTUM  MAVERICK 270/540AT  PRODUCT MANUAL 81-106844-01, 6/20/1994

 Jumper setting
 ==============


 JP1  Drive Select/Cable Select/Slave Present
 --------------------------------------------
   +------+------+------+--------------------------------------------+
   |DS    |CS    |SP    | Description                                |
   +------+------+------+--------------------------------------------+
   |OPEN  |OPEN  |OPEN  | Slave Drive                                |
   |      |      |      | Compatible with drive using PDIAG- line to |
   |      |      |      | handle Master/Slave communications         |
   +------+------+------+--------------------------------------------+
   |OPEN  |OPEN  |CLOSED| Slave Drive                                |
   |      |      |      | The PDIAG- and DASP- lines are not driven  |
   +------+------+------+--------------------------------------------+
   |CLOSED|OPEN  |OPEN  | Master Drive (Factory default)             |
   |      |      |      | Uses DASP- to check for the presence of a  |
   |      |      |      | Slave                                      |
   +------+------+------+--------------------------------------------+
   |CLOSED|OPEN  |CLOSED| Master Drive                               |
   |      |      |      | Uses the SP jumper to determine whether a  |
   |      |      |      | Slave is present, without checking PDIAG-  |
   |      |      |      | or DASP-                                   |
   +------+------+------+--------------------------------------------+
   |OPEN  |CLOSED|   X  | Slave or Master Drive, depending on the    |
   |      |      |      | state of the Quantum Cable Select signal   |
   |      |      |      | (pin 28) at the IDE-bus interface          |
   |      |      |      | connector.                                 |
   |      |      |      | If the signal state is set to OPEN         |
   |      |      |      | (grounded) then the drive is configured a  |
   |      |      |      | if DS were CLOSED, described above. If the |
   |      |      |      | Cable Select signal is set to CLOSED       |
   |      |      |      | (high), then the drive is configured as if |
   |      |      |      | DS were OPEN, described above.             |
   +------+------+------+--------------------------------------------+

 X indicates the jumper setting does not matter.

 Caution: The CS and DS jumpers should never be installed at the same
          time.


 DS  Drive Select Jumper
 -----------------------
 You can configure two drives on the ATA Interface as Master (Drive 0)
 and Slave (Drive 1) using the DS jumpers. Set the CS jumpers to OPEN
 for each drive. Then, set the DS Jumper to CLOSED on one drive to
 configure that drive as Master. Set the DS jumper to OPEN on the
 other drive to configure as Slave.

 Note: For drives configured using the DS jumper, the order in which
       drives are connected in a daisy chain has no significance.


 CS  Cable Select Jumper
 -----------------------
 When two Maverick 270/540AT hard disk drives are daisy-chained
 together, they can be configured as Master and Slave by using the CS
 jumper or by using the DS jumper - BUT NOT BOTH. To configure the two
 drives using the CS jumper, set the CS jumper to CLOSED and the DS
 jumper to OPEN on each drive.

 Once you install the CS jumper, the drive is configured as a Master
 or Slave by state of the Cable Select signal, which is pin 28 at the
 IDE-bus interface connector. Quantum uses the Cable Select function
 of pin 28. Quantum does not implement the spindle synchronizaton
 function.

 Pin 28 is grounded - that is, set to OPEN - on the cable coming from
 the host. This configures the first drive as Master. Then, pin 28 on
 the connector at the second drive should be made an open circuit by a
 cut in signal line 28 in the cable from the first drive, so it
 becomes high - that is, set to CLOSED - due to a pull-up in the
 second drive. This configures the second drive as a Slave.


 SP  Slave Present Jumper
 ------------------------
 The SP jumper normally is not needed. However, when the Maverick
 270/540AT is configured as Master and is connected to a Slave
 drive that does not implement the Drive Active/Slave Present (DASP-)
 signal, it is necessary to set the SP jumper to CLOSED on the
 Maverick 270/540AT.



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
QUANTUM  MAVERICK 270/540AT  PRODUCT MANUAL 81-106844-01, 6/20/1994

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

 Installation direction
 ----------------------

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

 Orientation
 -----------
 The mounting holes on the Maverick 270/540AT hard disk drive allow
 the drive to be mounted in any orientation.


 Mounting
 --------
 Drive mounting orientation, clearance, and ventilation requirements
 are described in the following subsections. For mounting, #6-32 UNC
 screws are recommended. To avoid stripping the mounting-hole threads,
 the maximum torque applied to the screws must not exceed 8 inch-
 pounds.

 Caution: The PCB is very close to the mounting holes. Do not
 exceed the specified length for the mounting screws. The specified
 screw length allows full use of the mounting-hole threads, while
 avoiding damaging or placing unwanted stress on the PCB. To avoid
 stripping the mounting-hole threads, the maximum torque applied to
 the mounting screws must not exceed 8 inch-pounds.


 Clearance
 ---------
 Clearance from the drive - except mounting surfaces - to any surface
 must be 0.05 inches minimum.


 Ventilation
 -----------
 The MV 270/540AT hard disk drives operates without a cooling fan,
 provided the ambient air temperature does not exceed 122*F (50*C).


 DC Power (J11 A and B)
 ----------------------
 The recommended mating connectors for the +5VDC and +12VDC input
 power are listed above.

 J11 A  4-Pin Connector:      AMP P/N 1-480424-0

        Loose piece contacts: AMP P/N 61173-4

        Strip contacts:       AMP P/N 350078-4

 J1 B   3-Pin Connector:      Molex P/N 39-01-0033

        Loose piece contacts: AMP P/N 39-00-00341

        Strip contacts:       AMP P/N 39-00-0023

 Power can be supplied to either J11 section A or J11 section B.
 Labels indicates the pin numbers on the connectors. On Section A,
 Pins 2 and 3 (the +5 and +12Vdc returns) are connected on the drive.


 Power Sequencing
 ----------------
 You may apply the power in any order or manner, or short or open
 either the power or power return line with no loss of data or damage
 to the disk drive. However, data may be lost in the sector being
 written at the time of power loss. The drive can withstand transient
 voltages of +10% to -100% from nominal while powering up or down.


 LED Connector J12
 -----------------
 The LED connector may be used to connect an external LED for the pur-
 pose of monitoring drive activity. A 220-ohm resistor is connected in
 series from the +LED pin to +5 volts. The -LED pin is connected to a
 switching transistor on the drive that turns on and lights the LED
 when the disk is performing a read or write operation. When no read
 or write operation is taking place, the transistor turns off and the
 LED is extinguished. The recommended mating connector parts are
 following:

 Two-position housing: Molex P/N 51021-0200
 Loose-piece contacts: Molex P/N 50058-8100

 Pin 1 -LED, Pin 2 +LED


 IDE-Bus Interface Connector (J11 C)
 -----------------------------------
 On the Maverick 270/540AT hard disk drive, the IDE-bus interface
 cable connector (J11 section C) is a 40-pin Universal Header.

 To prevent the possibility of incorrect installation, has been keyed
 by removing Pin 20, which ensures that a connector cannot be
 installed upside down.

 For mating with J11 section C, recommended cable connectors include
 the following parts or their equivalents:

 AMP receptacle with strain relief     P/N 1-499506-0
 AMP receptacle without strain relief  P/N 1-746193-0

 To key the cable connectors, you must plug the hole that corresponds
 to pin 20.

 Other recommended part numbers for the mating connector include:

 40-Pin Connector                  3M 3417-7000 or equivalent
 Strain Relief                     3M 3448-2040 or equivalent
 Flat Cable (Stranded 28 AWG)      3M 3365-40 or equivalent
 Flat Cable (Stranded 28 AWG)      3M 3517-40 (shielded) or equivalent


  For Systems with a Motherboard IDE Adapter
  ==========================================
  You can install the Maverick 270/540AT hard disk drive in an
  AT-compatible system that contains a 40-pin AT-bus connector on the
  motherboard.

  To connect the drive to the motherboard, use a 40-pin ribbon cable.
  Ensure that pin 1 of the drive is connected to pin 1 of the mother-
  board connector.


  For Systems with an IDE Adapter Board
  =====================================
  To install a Maverick 270/540AT hard disk drive in an AT-compatible
  system without a 40-pin, AT-bus connector on its motherboard, you
  need a third-party IDE-compatible adapter board.


  Adapter Board Installation
  --------------------------
  Carefully read the manual that accompanies your adapter board before
  installing it. Make sure that all the jumpers are set properly and
  that there are no addressing or signal conflicts. You must also
  investigate to see if your AT-compatible system contains a
  combination floppy and hard disk controller board. If it does, you
  must disable the hard disk drive controller functions on the
  controller board before proceeding.

  Once you have disabled the hard disk drive controller functions on
  the floppy/hard drive controller, install the adapter board. Again,
  make sure that you have set all jumper straps on the adapter board
  to avoid addressing and signal conflicts.


  Connecting the Adapter Board and the Drive
  ------------------------------------------
  Use a 40-pin ribbon cable to connect the drive to the board.

  1. Insert the 40-pin cable connector into the mating connector on
     the adapter board. Make sure that pin 1 of the connector matches
     with pin 1 on the cable.

  2. Insert the other end of the cable into the header on the drive.
     When inserting this end of the cable, make sure that pin 1 of
     the cable connects to pin 1 of the drive connector.

  3. Secure the drive to the system chassis by using the mounting
     screws.


 Base Casting Assembly
 ---------------------
 A single-piece aluminium-alloy base casting provides a mounting sur-
 face for the drive mechanism and PCB. The base casting also acts as
 the flange for the DC motor assembly. To provide a contamination-free
 environment for the HDA, a gasket provides a seal between the base
 casting and the metal cover that enclose the drive mechanism.


 Air Filtration
 --------------
 The Maverick 270/540AT hard disk drives are Winchester-type drives.
 The heads fly very close to the media surface. Therefore, it is
 essential that the air circulating within the drive be kept free of
 particles. Quantum assembles the drive in a Class-100, purified air
 environment, then seals the drive with a metal cover. When the drive
 is in use, the rotation of the disk forces the air inside of the
 drive through an internal filter.


 DC Motor Assembly
 -----------------
 Integral with the base casting, the DC motor assembly is a fixed-
 shaft, brushless DC spindle motor that drives the counter-clockwise
 rotation of the disks.


 Electrical Characteristics
 --------------------------
 All signals are transistor-transistor logic (TTL) compatible - with
 logic 1 greater than 2.0 volts and less than 5.25 volts; and logic 0
 greater than 0.0 volts and less than 0.8 volts. Neither the adapter
 board, motherboard interface, or drives require terminating
 resistors.


 Drive Cable and Connector
 -------------------------
 The hard disk drive connects to the host computer by means of a
 cable. This cable contains a 40-pin connector that plug into the
 drive, and a 40-pin connector that plugs into the host computer. At
 the host end, the cable plugs into either an adapter board residing
 in a host expansion slot or an on-board IDE adapter.

 If two drives are connected by a cable with two 40-pin drive
 connectors, the cable-select feature of the Maverick 270/540 AT
 automatically configure each as drive 0 or drive 1 depending on the
 configuration of pin 28 on the connector.


 Track and Cylinder Skewing
 --------------------------
    +-------+---------+------+---------+
    | Zone  |Sectors  |Track | Cylinder|
    | Number|Per Track|Skew  | Skew    |
    |       |         |Wedge | Wedge   |
    +-------+---------+------+---------+
    |  15   |   58    |  28  |   32    |
    +-------+---------+------+---------+
    |  14   |   65    |  28  |   32    |
    +-------+---------+------+---------+
    |  13   |   69    |  28  |   32    |
    +-------+---------+------+---------+
    |  12   |   74    |  28  |   32    |
    +-------+---------+------+---------+
    |  11   |   78    |  28  |   32    |
    +-------+---------+------+---------+
    |  10   |   83    |  28  |   32    |
    +-------+---------+------+---------+
    |  09   |   88    |  28  |   32    |
    +-------+---------+------+---------+
    |  08   |   93    |  28  |   32    |
    +-------+---------+------+---------+
    |  07   |   97    |  28  |   32    |
    +-------+---------+------+---------+
    |  06   |  104    |  28  |   32    |
    +-------+---------+------+---------+
    |  05   |  108    |  28  |   32    |
    +-------+---------+------+---------+
    |  04   |  112    |  28  |   32    |
    +-------+---------+------+---------+
    |  03   |  114    |  28  |   32    |
    +-------+---------+------+---------+
    |  02   |  118    |  28  |   32    |
    +-------+---------+------+---------+
    |  0,1  |  118    |  28  |   32    |
    +-------+---------+------+---------+
    |System |   94    |  28  |   32    |
    +-------+---------+------+---------+



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
QUANTUM  MAVERICK 270/540AT  PRODUCT MANUAL 81-106844-01, 6/20/1994

 General Description
 -------------------
 Quantum's Maverick 270AT/540AT hard disk drives are a part of a
 family of high-performance, 1-inch-high hard disk drives manufactured
 to meet the highest product quality standards. The Maverick hard disk
 drives use nonremovable, 3 -inch hard disks.

 Maverick 270AT/540AT hard disk drives feature an embedded AT drive
 controller and use AT commands to optimize systems performance.
 Because the drive manages media defects and error recovery
 internally, these operations are fully transparent to the user.


 Seek Times
 ----------
   +-----------------+--------------+
   |Track-to-track   |    4 ms typ. |
   +-----------------+--------------+
   |Average write    |   16 ms typ. |
   |                 | 17.5 ms max. |
   +-----------------+--------------+
   |Full stroke      |   28 ms typ. |
   |                 |   30 ms max. |
   +-----------------+--------------+


 System Startup and Operation
 ----------------------------
 Once you have installed the Maverick 270/540AT hard disk drive
 and adapter board (if required) in the host system, you are ready to
 partition and format the drive for operation. To set up the drive
 correctly, follow these steps:

 1. Power on the system

 2. Run the SETUP program. This is generally on a Diagnostics or
    Utilities disk, or within the system's BIOS.

 3. Enter the appropriate parameters.

    The SETUP program allows you to enter the types of optional hard-
    ware installed - such as the hard disk drive type, the floppy disk
    drive capacity, and the display adapter type. The system's BIOS
    uses this information to initialize the system when the power is
    switched on. For instructions on how to use the SETUP program,
    refer to the system manual for your PC.

    During the AT system CMOS setup, you must enter the drive type for
    the Maverick 270/540AT hard disk drive. This procedure allows the
    system to recognize the drive by translating its physical drive
    geometry parameters such as cylinders, heads, and sectors per
    track, into a logical addressing mode.

 4. Boot the system using the operating system installation disk.

 NOTE
 The drive is shipped from the factory with a low-level format. A low-
 level format is not required.


 Formatted Capacity
 ------------------
 At the factory, the Maverick 270/540AT receives a low-level
 format that creates the actual tracks and sectors on the drive.


 Data Transfer Rates
 -------------------
 Data is transferred from the disk to the read buffer at a rate up to
 4.5 MB/s in burst. Data is transferred from the read buffer to the AT
 bus at a rate up to 6.0 MB/s, using programmed I/O without IORDY, up
 to 11 MB/s using programmed I/O with IORDY, or at a rate of up to
 13.3 MB/sec using multi-word DMA.


 Reliability
 -----------
 Mean Time Between Failures (MTBF): 150,000 Power On Hours (POH),
                                    typical usage
 Component Life:                    5 years
 Preventive Maintenance (PM):       Not required
 Start/Stop:                        20,000 cycles (minimum)
 MTTR:                              30 minutes

 The Quantum MTBF numbers represent Bell-Core MTBF predictions and
 represent the minimum MTBF that Quantum or a customer would expect
 from the drive.


 Error Detection and Correction
 ------------------------------
 As disk drive areal densities increase, obtaining extremely low error
 rate requires a new generation of soghisticated error-correction
 codes. Quantum Maverick 270/540AT series hard disk drives implement
 112-bit single- and double-burst Reed-Solomon error correction
 techniques to reduce the uncorrectable read error rate to less than
 one bit in 1 x 10(14) bits read.

 When errors occur, an automatic retry and a more rigorous double-
 burst correction algorithm enable the correction of any sector with
 two burst of three incorrect bytes each or up to six multiple random
 one-byte burst errors. In addition to these advanced error correction
 capabilities, the drive's additional cross-checking code and
 algorithm double checks the main ECC correction to greatly reduce the
 probability of miscorrection.


 Automatic Actuator Lock
 -----------------------
 To ensure data integrity and prevent damage during shipment, the
 drive uses a dedicated landing zone and Quantum's patented AIRLOCK.
 The AIRLOCK holds the headstack in the landing zone whenever the
 disks are not rotating. It consists of an air vane mounted near the
 perimeter of the disk stack and a locking arm that restrains the
 actuator arm assembly.

 When DC power is applied to the motor and the disk stack rotates, the
 rotation generates an airflow on the surface of the disk. As the flow
 of air across the airvane increases with disk ratation, the locking
 arm pivots away from the actuator arm, enabling the headstack to move
 out of the landing zone. When DC power is removed from the motor, a
 return mechanism automatically pulls the actuator into the landing
 zone, where the AIRLOCK holds it in place.


 Disk Caching
 ------------
 The Maverick 270/540AT hard disk drive incorporates DisCache, a
 96K disk cache, to enhance drive performance. This integrated feature
 is user-programmable and can significantly improve system throughput.
 Read and write caching can be enabled or disabled by using the SET
 CONIGURATION command.


 Error Reporting
 ---------------
 At the start of a command's execution, the Maverick 270/540AT hard
 disk drive checks the Command Register for any conditions that would
 lead an abort command error. The drive then attemps execution of the
 command. Any new error causes execution of the command to terminate
 at the point at which it is occurred.

 -----------------+----------------------------+---------------------+
 COMMAND          |ERROR REGISTER              |STATUS REGISTER      |
                  +----------------------------+---------------------+
                  |BBK|UNC|IDNF|ABRT|TK0NF|AMNF|DRDY|DWF|DSC|CORR|ERR|
 -----------------+---+---+----+----+-----+----+----+---+---+----+---+
 Read Defect List | V | V | V  | V  |     | V  | V  | V | V | V  | V |
 Exec. Drive Diag.|   |   |    |    |     |    |    |   |   |    | V |
 Format Track     |   |   | V  | V  |     |    | V  | V | V |    | V |
 Identify Drive   |   |   |    | V  |     |    | V  | V | V |    | V |
 Initi. Parameters|   |   |    |    |     |    | V  | V | V |    |   |
 Inval.Cmnd. Codes|   |   |    | V  |     |    | V  | V | V |    | V |
 Read Buffer      |   |   |    | V  |     |    | V  | V | V |    | V |
 Read Configurati.| V | V | V  | V  |     | V  | V  | V | V | V  | V |
 Read DMA         | V | V | V  | V  |     | V  | V  | V | V | V  | V |
 Read Multiple    | V | V | V  | V  |     | V  | V  | V | V | V  | V |
 Read Sectors     | V | V | V  | V  |     | V  | V  | V | V | V  | V |
 Read Sec. Long   | V |   | V  | V  |     | V  | V  | V | V |    | V |
 Read Verify Sec. | V | V | V  | V  |     | V  | V  | V | V | V  | V |
 Recalibrate      |   |   |    | V  | V   |    | V  | V | V |    | V |
 Seek             |   |   | V  | V  |     |    | V  | V | V |    | V |
 Set Configuration| V |   | V  | V  |     |    | V  | V | V |    | V |
 Set Features     |   |   |    | V  |     |    | V  | V | V |    | V |
 Set Multiple Mode|   |   |    | V  |     |    |    |   |   |    | V |
 Write Buffer     |   |   |    | V  |     |    |    |   |   |    | V |
 Write Multiple   | V |   | V  | V  |     |    | V  | V | V |    | V |
 Write DMA        | V |   | V  | V  |     |    | V  | V | V |    | V |
 Write Sectors    | V |   | V  | V  |     |    | V  | V | V |    | V |
 Write Sec. Long  | V |   | V  | V  |     |    | V  | V | V |    | V |
 Check Power Mode |   |   |    |    |     |    | V  | V | V |    | V |
 -----------------+---+---+----+----+-----+----+----+---+---+----+---+

 Key:
 V     = Valid errors for each command
 ABRT  = Abort command error
 AMNF  = Data address mark not found error
 BBK   = Bad block detected
 CORR  = Corrected data error
 DRDY  = Drive not ready detected
 DSC   = Disk seek complete not detected
 DWF   = Drive write fault detected
 ERR   = Error bit in the Status Register
 IDNF  = Requested ID not found
 TK0NF = Track zero not found error
 UNC   = Uncorrectable data error


 Defect Management
 -----------------
 The Maverick 270/540AT allocate one sector per disk or 2 sectors per
 cylinder as a spare. In the factory, the media is scanned for
 defects. If a sector on a cylinder is found to be defective, the
 address of the sector is added to the drive's defect list. Sectors
 located physically subsequent to the defective sector are assigned
 logical block addresses such that a sequential ordering of logical
 blocks results. This inline sparing technique is employed in an
 attempt to eliminate slow data transfer that would result from a
 single defective sector on a cylinder.

 If more than one sector is found defective on a cylinder, the inline
 sparing technique is applied only to the first sector. The remaining
 defective sectors are replaced with the nearest available spare
 sectors on nearby cylinders. Such an assignment of additional
 replacement sectors from nearby sectors rather than having a central
 pool of spare sectors is an attempt to minimize the motion of the
 actuator and head that otherwise would be needed to find a replace-
 ment sector. The result is minimal reduction of data throughput.


