Hard Drive: TOSHIBA: MK-1926FBV 815MB 2.5"/SSL SCSI2 FAST
M K - 1 9 2 6 F B 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 SCSI2 SI/FAST Precompensation
Cache/Buffer 128 KB READ-AHEAD Landing Zone
Data transfer rate 5.000 MB/S int Bytes/Sector 512
10.000 MB/S ext SYNC
Recording method PRML 8/9 operating | non-operating
-------------+--------------
Supply voltage 5 V Temperature *C 5 55 | -20 60
Power: sleep 0.2 W Humidity % |
standby 0.3 W Altitude km -0.300 3.000| -0.400 15.000
idle W Shock g 100 | 200
seek 2.4 W Rotation RPM 4200
read/write 2.5 W Acoustic dBA 33
spin-up W ECC Bit 168BIT,ON THE FLY
MTBF h 300000
Warranty Month
Lift/Lock/Park YES Certificates CSA,TUV,UL12750
Layout
TOSHIBA MK1926FBV PRODUCT SPECIFICATION 71Y102826 29/05/1995
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
Jumpers
TOSHIBA MK1926FBV PRODUCT SPECIFICATION 71Y102826 29/05/1995
Jumper Setting
==============
+------- E3
+5V LOGIC ---+ | +----- E1
+5V RETURN + | | | +-- RESERVED
| | | | +++
---------------------1---7-----1+
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 x o o o o+-----
--------------2---8-----2+
| | | | +++
x = Polarity key | | | | +-- RESERVED
| | | +----- E2
| | +------- SYNC (LED)
| +----------- +5V LOGIC
+------------- +5V RETURN
Pin 37/38 +5V RETURN Pin 39/40 +5V MOTOR
NOTE
Two types of drives, one with internal pull-up resistors for all
interface signals and the other one without resistors, are available.
For the drives with pull-up resistors, +5V power must be provided to the TERMPWR pin (pin #24) for the power source of the pull-up resistors.
For the drive without pull-up resistors, TERMPWR pin (pin #24) is
left open in the drive.
SCSI ID ------- +----------+-----------------------+ | SCSI ID | Jumpers | | | E3 | E2 | E1 | +----------+-------+-------+-------+ | 0 | OPEN | OPEN | OPEN | +----------+-------+-------+-------+ | 1 | OPEN | OPEN | CLOSED| +----------+-------+-------+-------+ | 2 | OPEN | CLOSED| OPEN | +----------+-------+-------+-------+ | 3 | OPEN | CLOSED| CLOSED| +----------+-------+-------+-------+ | 4 | CLOSED| OPEN | OPEN | +----------+-------+-------+-------+ | 5 | CLOSED| OPEN | CLOSED| +----------+-------+-------+-------+ | 6 | CLOSED| CLOSED| OPEN | +----------+-------+-------+-------+ | 7 | CLOSED| CLOSED| CLOSED| +----------+-------+-------+-------+
Install
TOSHIBA MK1926FBV PRODUCT SPECIFICATION 71Y102826 29/05/1995
Notes On Installation
=====================
Installation
------------
The drive should be mounted carefully on the surface of 0.2 mm
flatness or less to avoid excessive distortion. It is recommended
the space greater than 1 mm is kept under the PCB and it is important
to check enough for safe design to prevent short- circuit under any
circumstances. Enough room to avoid any mechanical interference
when receiving shock or vibration is required especially around the
convex portion in the HDA. The temperature of the top cover and the
base must be kept under 60*C at any moment to maintain the desired
reliability.
The M3 mounting screw holes are tapped directly on the aluminium
portion of HDA for electrical ground. The others are tapped on the
plastic portion for electrical insulation. Screw holes for mounting
can be determined by the evaluation results of the electromagnetic
noise emitted from the host system to drive. The breathing hole
should be kept open after mounting. A maximum force of 2N should be
allowed on the top cover to avoid the drive damage.
The drive is using several parts which can be easily damaged by ESD
(Electric Static Discharge), so do not touch the interface
connector pins and the surface of PCB.
Screwing
--------
Four screws should be tightened equally with 0.3N.m (3 kgf.cm)
torque. The depth should be 3.0 mm min. 4.0 mm maximum.
Cable Connection ---------------- +------------------------+---------------------------------------+ |Interface Connector | | |Drive side connector | Yamaichi GAP050K15037 | +------------------------+---------------------------------------+ |Mating Connector | 2.0 mm pin including power lines and| | | jumper post | +------------------------+---------------------------------------+ |Recommended host 40-PIN | | |side connector | | |for board | right angle type: Berg 88333-040 | | | straight type: AMP 6-176135-5 | | --------------------+---------------------------------------+ |for cable | Berg 89361-040 | | | AMP 111-624-9 | +------------------------+---------------------------------------+ |Recommended host 50-PIN | | |side connector | | |for board | right angle type: Berg 88333-050 | | | straight type: AMP 6-176135-6 | | --------------------+---------------------------------------+ |for cable | Berg 89361-050 | | | AMP 1-111-624-1 | +------------------------+---------------------------------------+
Cable
Twisted pair type cable is recommended as follows:
Standard diameter 0.32mm (28 AWG)
Characteristic impedance 100-132
Cable length +------------------------+----------------------+------------------+ |Transfer rate (MB/s MAX)| Cable length (m MAX) | Number of units | | | | (Incl. initiator)| +------------------------+----------------------+------------------+ | 10 | 0.6 | 2 | +------------------------+----------------------+------------------+ | 4 | 1.0 | 2 | +------------------------+----------------------+------------------+ | 3 | 4.0 | 5 | +------------------------+----------------------+------------------+ | 2.5 | 6.0 | 8 | +------------------------+----------------------+------------------+ If SCSI cables have different characteristic impedance, the data integrity is not guaranteed. The SCSI cable should be terminated at the ends by a device with termination resistors.
Features
TOSHIBA MK-1926FBV PRODUCT SPECIFICATION 71Y102826 29/05/95
General Description
-------------------
The MK1926FBV cpmprises a series of intelligent disk drives, herein-
after referred to as the MK1926FBV or simply as the drive.
The drive features a SCSI embedded controller that realizes FAST
SCSI-2 interface. The drive employs Winchester technology and a
closed loop servo control system to realize recording density of
711 kbit/mm (459 Mbit/inch ) and average access time of 13 msec
with highest reliability of 300,000 hours for MTTF.
Some Key Features
-----------------
- Quick spin up of Spindle Motor 5sec.
- Average access time of 13 msec realized by optimized balance of a heead actuator assembly and an efficiently designed magnet of Rotary VCM.
- Read ahead cache and write cache enhancing system throughput.
- Fail-safe power down return heads to landing zone with automatic carriage lock realized high immunity to operating shock 1,000 m/s .
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