
M K - 1 9 2 6 F C V    TOSHIBA
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 2.5"/SUPERSLIMLINE    Cylinders    2920|     |     |
Capacity form/unform   815/      MB        Heads           6|     |     |
Seek time   / track  13.0/ 3.0 ms          Sector/track  119|     |     |
Controller           IDE / ATA2 FAST/ENHA  Precompensation
Cache/Buffer           128 KB READ-AHEAD   Landing Zone
Data transfer rate          MB/S int       Bytes/Sector      512
                     16.600 MB/S ext DMA
Recording method     RLL 8/9                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5 V          Temperature *C         5 55    |    -20 60
Power: sleep          0.2 W     Humidity     %         8 80    |      8 80
       standby        0.3 W     Altitude    km    -0.300  3.000| -0.400 15.000
       idle           1.0 W     Shock        g       100       |    200
       seek           2.4 W     Rotation   RPM      4200
       read/write     2.5 W     Acoustic   dBA        35
       spin-up            W     ECC        Bit
                                MTBF         h     300000
                                Warranty Month
Lift/Lock/Park     YES          Certificates     CSA,IEC435,UL1950,VDE        

**********************************************************************
                        L   A   Y   O   U   T
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TOSHIBA  MK1926FCV  PRODUCT SPECIFICATION 71Y102779 24/04/1995






     39-------------------------------------1---7-----1+
     |o o o o o o o o o o o x o o o o o o o o x o o o o|
   --+o o o o o o o o o o o o o o o o o o o o x o o o o+-----
     40-------------------------------------2---8-----2+

 x = Polarity key










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                      J   U   M   P   E   R   S
**********************************************************************
TOSHIBA  MK1926FCV  PRODUCT SPECIFICATION 71Y102779 24/04/1995

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


 Master/Slave Configuration
 --------------------------
 By using optional jumper J2 beside the interface connector, two units
 can be connected on a cable in a daisy chain.
 When J2 is open, the drive runs as master drive. When closed, it acts
 as slave drive. In case of two drive connection, one should be a
 master and another should be a slave. In case of single drive
 connection, it should be defined as master.

 Both master and slave drive are allocated onto same I/O area and
 identified by Drive bit in DRVH register. Host system writes into
 register on both drives but reads register only from a selected
 drive.

 Only the selected drive can execute the command except Diagnose
 command. Diagnose command is executed on both drives and the result
 of slave drive is transferred  to master drive through PDIAG line.
 Master drive reports both results to host system.


 Interface Pin 28 -MASTER/+SLAVE
 -------------------------------
 The interface pin 28 has the same function as Option Jumper J2.
 Definition of Master/Slave should be done either by this pin or J2.
 If J2 is plugged for Master, this line does not affect to the
 definition. This selection is done by Toshiba Specific command.



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                      I   N   S   T   A   L   L
**********************************************************************
TOSHIBA  MK1926FCV  PRODUCT SPECIFICATION 71Y102779  24/04/1995

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

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

        TOP SIDE                          HORIZONTAL PLANE

   +-----------------+             +--+                   +--+
   |        |        |             |  +-----+       +-----+  |
   |        V        |             |  |     |       |     |  |
 +-+-----------------+-+           |  |     |       |     |  |
 +---------------------+           |  |---> |       |<--- |  |
                                   |  |     |       |     |  |
                                   |  |     |       |     |  |
 +---------------------+           |  +-----+       +-----+  |
 +-+-----------------+-+           +--+                   +--+
   |        ^        |
   |        |        |
   +-----------------+

 The drive can be installed in any orientation.


 Screwing
 --------
 Four screws should be tightened equally with 0.3 mm torque. The depth
 should be 3.00mm min. 3.5mm max. (Screws 4-M3).


 Installation
 ------------
 The drive should be mounted carefully on the surface of 1.0mm
 flatness or less to avoid excessive distortion. And some space should
 be kept under the PCB to get enough air flow and to avoid any
 mechanical interference when receiving shock or vibration. It is
 important to check enough for safe design to prevent short-circuit
 under any circumstances.


 Task File Interface Connector
 -----------------------------
 Drive side connector: Yamaichi GAP050K11617 or equivalent


 Cable
 -----
 Standard diameter:    0.32mm
 Cable length:         0.46m


 Grounding
 ---------
 HDA (Head Disk Assembly) and DC ground (ground pins on interface) are
 elelctrically connected each other.



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
TOSHIBA  MK1926FCV  PRODUCT SPECIFICATION  71Y102779  24/04/1995

 General Description
 -------------------
 The MK1926FCV comprises a series of intelligent disk drives, herein-
 after referred to as the MK1926FCV or simply as the drive.

 The drive features an ATA-2 embedded controller that requires a
 simplified adapter board for interfacing to an AT or AT compatible
 bus. The drives employ Winchester technology and a closed loop servo
 control system to realize recording density of more than 711kbits/mm
 and average access time of 13 msec with highest reliability of
 300,000 hours for MTTF (Mean Time for Failure).

 It features smallest and lightest drive with 19mm height half foot-
 print of market standard 3.5 inch-type micro FDD and 150 grams of
 weight.

 The MK1926FCV consists of an HDA (Head Disk Assembly) and a printed
 circuit board. The HDA is a sealed module and contains a disk spindle
 assembly, a head actuator assembly and an air filtration system.
 Reliability is enhanced through the use of Winchester technology. The
 actuator is a rotary voice coil motor and provides high-speed access.

 The disk is driven dirctly by a DC spindle motor. Air filtration is
 provided by means of a high performance air filtration system using
 both breather and circulation filters.

 The drive provides a carriage lock mechanism which is activated
 automatically when power is down, thus preventing head/media damage
 during non-operating or transportation conditions.

 The printed circuit board is located externally to the HDA and
 contains all the electric circuitries necessary to operate the drive
 except the head drivers. This board contains the power supply and
 interface signal connectors. Only the head control IC's are located
 within the HDA. The circuitries perform the following functions:

 - Read/Write, Task File Control, Spindle Motor Control, Seek and
   Head Positioning Servo Control and Abnormal Condition Detection.


 Seek Time
 ---------
       +----------------------------------+--------+
       |                                  |1926FCV |
       +----------------------------------+--------+
       |Track-to-Track         msec. typ. |   3    |
       +----------------------------------+--------+
       |Average                msec. typ. |  15    |
       |                       msec. max. |  25    |
       +----------------------------------+--------+
       |Latency                msec. avg. |   8.33 |
       +----------------------------------+--------+


 Power Sequence
 --------------
 If the 5V Logic is separated from 5V Motor, both lines should be
 turned on and off within a second longest.


