M 3 6 5 0 F MINISCRIBE
NO MORE PRODUCED Native| Translation
------+-----+-----+-----
Form 5.25"/HH Cylinders 809| | |
Capacity form/unform 42/ 50 MB Heads 6| | |
Seek time / track 46.0/ 9.0 ms Sector/track 17| | |
Controller MFM / ST412 Precompensation 128
Cache/Buffer KB Landing Zone
Data transfer rate 0.625 MB/S int Bytes/Sector 512
0.625 MB/S ext
Recording method MFM operating | non-operating
-------------+--------------
Supply voltage 5/12 V Temperature *C 4 50 | -40 57
Power: sleep W Humidity % 8 80 | 8 80
standby W Altitude km -0.061 3.048| 12.192
idle W Shock g 5 | 40
seek 18.1 W Rotation RPM 3600
read/write W Acoustic dBA 50
spin-up W ECC Bit
MTBF h 15000
Warranty Month
Lift/Lock/Park YES Certificates CSA,FCC,TUV,UL1950
**********************************************************************
L A Y O U T
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MINISC. 3425P/3438P/3650/3675 PRODUCT DESCRIPTION
+-------------------------------------------------------+
| |XX Power
| |XX
| |
| |XX
| |XX Control
| |XX Cable
| |XX J1
| |XX
| |XX
| |XX
| DS0+-+ |
| DS1| | |XX
| DS2| | |XX
| DS3| | |XX
| JP3| | |XX Data
| +RP1------+ JP2| | |XX Cable
| +---------+ JP1+-+ |XX J2
+-------------------------------------------------------+
**********************************************************************
J U M P E R S
**********************************************************************
MINISC. 3650 PRODUCT MANUAL 1076 REV. A, APRIL 7, 1987
Jumper Setting
==============
Drive Select
------------
+-----------------+---------+-------+-------+-------+
| | DS0 | DS1 | DS2 | DS3 |
+-----------------+---------+-------+-------+-------+
|Drive Select 0 | CLOSED | OPEN | OPEN | OPEN |
+-----------------+---------+-------+-------+-------+
|Drive Select 1 | OPEN | CLOSED| OPEN | OPEN |
+-----------------+---------+-------+-------+-------+
|Drive Select 2 | OPEN | OPEN | CLOSED| OPEN |
+-----------------+---------+-------+-------+-------+
|Drive Select 3 | OPEN | OPEN | OPEN | CLOSED|
+-----------------+---------+-------+-------+-------+
As shipped, the jumper is set to Drive 0 selected.
Drive Excersice Options
-----------------------
As shipped, there are jumpers on JP1, JP2 and JP3. JP1 and JP2
jumpers are for factory test modes and must remain on for normal
operation. JP3 is the park feature enable, it must be installed to
use the 30 second park feature.
Terminators
-----------
Each drive is shipped with a terminator pack providing the 220/330
ohm termination for the Control Input Signals. If multiple drives
are configured in a daisy chain configuration, the terminator pack
must be removed from all drives except the last unit on the daisy
chain.
**********************************************************************
I N S T A L L
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MINISC. 3650 PRODUCT MANUAL 1076, REV. A, APRIL 7, 1987
Notes on Installation
=====================
Drive mounting
--------------
horizontally vertically
+-----------------+ +--+ +--+
| | | +-----+ +-----+ |
| | | | | | | |
+-+-----------------+-+ | | | | | |
+---------------------+ | | | | | |
| | | | | |
x x | | | | | |
+------x------x-------+ | +-----+ +-----+ |
+-+------x--x-------+-+ +--+ +--+
| xx |
| x x |
+---x--------x----+
x x
UNACCEPTABLE!
Recommended Mounting Configuration
----------------------------------
The MiniScribe 3650 half height drive is designed to be used in
applications where the unit may experience shock and vibrations at
greater levels than larger and heavier disk drives.
Two features which allow greater shock tolerances are the use of
rugged media and shock mounts. To take full advantage of the shock
mounts, however, it is necessary to provide a 0.1 inch clearance on
both the top and bottom of the drive. This clearance allows for move-
ment of the drive during acceleration. This implies that if the drive
is mounted by the bottom mounting holes on a flat surface, stands-off
are needed under the mounting holes. No special considerations are
required if the drive is mounted using the side mounts except for the
clearance on top and bottom. The drive may be mounted in any attitude
except upside down.
The drive is mounted using 6-32 UNC screws, 1/4 inch maximum
penetration. The customer should allow adequate ventilation to the
drive to insure reliable drive operation over the operating
temperature range.
Cabling
-------
Connect interface cables with connectors P1, P2, P3, and P4 to J1,
J2, J3, and J4 respetively. Insure that connectors P1 and P2 have
keys installed. If multiple drives are be interconnected, remove the
terminator packs in all but the last drive in the daisy chain.
Magnetic Field
--------------
The externally induced magnetic flux density may not exceed 3 Gauss
as measured at the disk surface.
Electrical Interface
--------------------
The interface to the MiniScribe 3650 can be divided into three
categories, each of which are physically separated: Comtrol Signals,
Data Signals and DC Power.
All Control Signals are digital in nature (open collector TTL) and
either provide signals to the drive (input) or signals to the
controller (output). The Data Signals are differential in nature and
provide data either to (write) or from (read) the drive.
The interconnect cable between the drive and controller may be flat
ribbon or twisted pairs of a length not to exceed 20 feet. The signal
return lines and ground lines for P1 and P2 should be grounded at the
controller.
The voltage return lines of P3 should only be grounded at the power
supply.
Connector P4 is a spade lug connector tied to frame ground.
Cable Interconnection - 4 Drive System
--------------------------------------
HOST
+-----------+ +-----------------+
| +---o---Control------------------+P1 Drive 1 |
| | | +-------Data------------+P2 |
| | | | +-Power---+P3 P4 ... |
| | | | | +-----+-----------+
| | | | | +-Frame----+
| | | | | | +-----------------+
|Controller | o----+-------------+----+----+P1 Drive 2 |
| | | | +-----------+----+----+P2 |
| | | | | o----+----+P3 P4 ... |
| | | | | | | +----+------------+
| | | | | | o---------+
| | | | | | | +-----------------+
+-----------+ o----+-+-----------+----+----+P1 Drive 3 |
| | | | | +---------+----+----+P2 |
| +---+----+ | | o----+----+P3 P4 ... |
| +---+------+ | | | +-----+-----------+
| | | | | o----------+
|Data +---+--------+ | | +-----------------+
|Separator | +------------------+----+----+P1 Drive 4 |
| +----------------------+----+----+P2 |
| | o----+----+P3 P4 XXX |
+-----------+ | | +-----+-----------+
DC voltages----+ o----------+
|
Frame Ground--------+
... = Terminator Pack removed
XXX = Terminator Pack installed
P1 Connector - Control Signals
------------------------------
Connection to P1 is through a 34 pin PCB edge connector. The pins are
numbered 1 through 34 with the odd pins located on the componet side
of the printed circuit board. A key slot is provided betweeen pins 4
and 6.
The recommended mating connector (J1) is AMP Ribbon Connector, P/N
88373-3.
P2 Connector - Data Signals
---------------------------
Connection to P2 is through a 20 pin edge connector. The pins are
numbered 1 through 20 with the odd pins located on the component side
of the Printed Circuit Board. A key slot is provided between pins 4
and 6.
The recommended mating connector (J2) is AMP Ribbon Connector, P/N
88373-6.
P3 Connector - DC Power
-----------------------
DC power connector (P3) is a 4 pin AMP Mate-N-Lok connector, mounted
on the PCB. The P3 connector is mounted on the component side of the
PCB.
The recommended mating connector (J3) is AMP P/N 1-480424-0 utilizing
AMP pins P/N 350078-4.
+-----P3-----+ pin 1 +12 VDC
| 4 3 2 1 | pin 2 +12 Ground Return
+------------+ pin 3 + 5 Ground Return
pin 4 + 5 VDC
P4 Connector - Frame Ground
---------------------------
Fasten AMP P/N 61761-2.
The recommended mating connector (J4) is AMP 62187-1.
If used, the hole in P4 will accommodate a wire size of 18 AWG
maximum.
Caution/Warning
---------------
The Miniscribe drive is a precision product weighing 3.5 pounds.
During handling the unit must not be dropped, jarred or bumped.
Otherwise, damage to the heads and disks may occur. When the drive is
removed from the Miniscribe shipping container and not immediately
secured within a chassis through its shock mounts, it must be stored
on a soft padded surface.
Failure to comply with the above procedure will render null and void
all warranties.
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F E A T U R E S
**********************************************************************
MINISC. 3425P/3438P/3650/3675 PRODUCT DESCRIPTION
Formatting Guidelines
---------------------
Before a hard disk drive can be used, 3 steps must be completed:
1. The drive must be low-level formatted to establish communications
with the disk drive and controller board.
2. The drive must be partitioned into one or more logical drives. Use
the fdisk programm from DOS versions 3.3 or higher or partioning
software like Disk Manager or Speedstor.
3. The drive must be high-level formatted to prepare it for the
operating system installation. Use the DOS format command or Disk
Manager/Speedstor software.
XT 8086/8088 Installation
-------------------------
Use the utilities from any 8 bit controller board to low-lwvel format
the drive. Typical routinetis to use the DOS debug command to address
these utilities. If the low-level format program of the controller
asks for step pulse rate or control byte values, use the controller
default values.
AT 80286/80386 Installation
---------------------------
Use the MiniScribe version of Ontrack Disk Manager software or the
Universal version of Speedstor software of the entire formatting
process.
