TM81
n
".,~,
...
,.",:!oiIN:':
"..I","
:::,1.:,:;'
".48-
I'
" ' 'i,'
.~
:?>
f
,;;<:.
i
~
2E
FLEH,IBIJEJli,i
i
!!I~i~R··'·"'.·'·'
JI~L;,
,iil'lllCS
,':i;,,!iiVl.~
PRODUCT
SPEfi~~~l1ijN
~
USER'S
MANUAL
This
document,
may
not
be
Tandon
This
installation,
Corporation.
documentisintendedtoprovide
and
duplicated
operation,
the
or
and
information
reproduced,
serviceofthe
contained
in
wholeorin
the
user
equipment
NOTICE
herein,iscopyright
part,
with
detailed
involved.
without
information
the
by
Tandon
prior
adequate
Corporation
written
for
approval
the
efficient
and
of
However,
accurateasof
while
every
the
effort
dateofpublication,noguaranteeisgivenorimpliedasto
has
been
madetokeep
the
information
contained
its
herein
accuracy.
current
and
TM848-1E, TM848-2E
THINLINE™
48 TRACKS
PRODUCT SPECIFICATION AND
FLEXIBLE
PER
INCH
DISK DRIVE
USER'S
MANUAL
'anaiiii
20320
CHATSWORTH, CALIFORNIA 91311
© COPYRIGHT 1983 TANDON
CORPORATION
PRAIRIE
STREET
CORPORATION
CONTENTS
Section
Number
SECTION 1
1.1
1.2
1.3
1.4
1.5
SECTION 2
2.1
2.2
2.3
2.4
Title
GENERAL
Introduction.
Scope
PurposeOfThe
Major
Microprocessor Control 1-1
Write
Daisy
Internal
Industry
Activity
Direct
Com
Diskette
Functional
Power
Physical
PRODUCT
Introduction.
Mechanical
Electrical
Reliability
Environmental
DESCRIPTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Of
The
Document....
Drive
Features....
Protect
Chain
Trim
Standard
Indica
Drive,
pact
Size . . . . . . . . . . . . . . . . . . .. . . . . . . . . . .. . . . . .. . . . . . . .. . .. . . . . . . . .. . . .
Lever
Description
On
Self-Tests '" 1-3
Description.
SPECIFICATIONS
. . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . .. . . 2-1
Specifications
and
Specifications.
. .
.. ........
Capability.........
Erase..
Interface
tor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .
BrushlessD.C.
Lock
. . .. . .. . . . .. . . . . . . .. . .. . .. . . . . .. . . . . . . . . . . . . .. . .. . .. . . 1-3
Operational
Specifications.
.. ..
. . . .
Solenoid.....
Specifications.
. . . . .. . . . . . . .. . .. . ..
. . . . .. . .. . .
.. ..
. .... . .. . .. . . .... .
..
Compatibility.
Motor.
. . . . . . . .. . .. . .. . .. . .. . . . .. . .. . . . . . . . . . . . . . . . . 2-1
..
..
.. ..
. .
..
. . .. . . . . .. . .. . . . .. . . . . . . . . . . . . . . . .. . .. 1-2
..
. . . .... .... . .
. . .. . . . . . . . . . . . . .. . .. . . . . . . . . . . . . . 2-1
..
. . .....
. . . . . .. 1-2
. . .. . .. . . . . . . .. . .. . . . . . . . . . . . . 1-2
.. ..
. . . . . . . .. . .. . . . . . . . . . . . . . 2-1
. . . . .
.
..
..
..
..
Page
Number
1-1
1-1
1-1
1-1
1-1
1-
2
1-
2
1-2
1-2
2-1
SECTION 3
3.1
3.2
3.3
3.4
3.5
3.6
OPERATION
Introduction
Unpacking
Pre
installation
Mounting
Dust
Cooling .
Interface
Input
Output
Typical
D.C.Power
DriveAddress
Drive
Head
Stepper
Spindle
Ready
Lever
Disk
Two-Sided
WriteProtect
Write
Diagnostic
The
Drive
Checkout
The
Drive
Cover .
Connections .
Control
Control
Select
Select
and
Lock
Change
Current
Lines
Lines
Interface
Motor
Motor Control
True
Options
Diskette
ModeofOperation
Characteristics
and
Option
(DS1-DS4)
Options
Power
Ready(Rand
(DC) .
(WP
Switch
Strapping
(Sl-S3
(PS, PS*, DS, HL) .
Options
(D,
DL, LL, NL) .
Installed
and
NP)
(XC
and
1B-4B)
(M1, M3, M4, MOL, MOH,
TR) .
(2S) .
and
IC) .
(DM, DL, M1, M3, M4) .
MC1-MC4)
.
3-1
.
3-1
3-1
.
.
3-1
3-2
3-2
3-2
.
3-2
.
3-5
.
3-6
.
3-6
.
3-8
.
3-8
.
3-8
3-10
.
3-10
3-13
3-13
3-13
3-13
.
3-13
3-14
3-14
i
Section
Number
Title
Page
Number
3.7
Figure
Number
1-1
2-1
2-2
2-3
3-1
3-2
3-3
3-4
3-5
3-6
Diskettes
Loading
Write
Diskette
Title
Disk
Drive
Disk
Drive
+
24
VoltD.C.
+
24
VoltD.C.
Electrical
Control
LSI
Non-LSI
Recording
Diskette
and
Circuit
The
Protect
Handling
Outline
Interface
Data
Board
Circuit
Media
Care
and
Diskette
Tab
and
Drawing
Current,
Current,
Characteristics
Timing
Assembly
Board
Handling
Storage
ILLUSTRATIONS
FIGURES
Configuration
Configuration
Requirements
Assembly
1 .
2 .
.
3-14
.
3-14
3-14
.
3-17
.
Page
Number
1-4
.
.
2-2
2-5
2-5
.
3-6
.
3-7
.
3-11
.
3-12
.
3-17
.
3-18
Table
Number
2-1
2-2
2-3
3-1
3-2
3-3
3-4
Title
Electrical
Reliability
Environmental
Drive
D.C.Power
Option
Diagnostic
and
Specifications
Interface
Connector
Patching
ModeOfOperation
Operational
Specifications
Lines
and
Pin
TABLES
Specifica
Pin
Assignments
tions
Assignments
ii
Page
Number
.
2-3
.
2-6
.
2-6
.
3-3
.
3-8
.
3-9
.
3-15
SECTION
1
GENERAL DESCRIPTION
INTRODUCTION
This
document
in
order
disk
Tandon
TM848-1E
drives
controlled
one-half
eight-inch
age
try
are48tracks
The
of
format
read/write
addition,
capability
tion
techniques
ingofthe
The
the
TM848-2E
tiesbyusing
to
drive
are
the
devices
standard,
Model
reading
on
(MFM)
Model TM848-1 E
diskette
provides
evaluate
intoasystem.
Corporation's
and
TM848-2E,
full-feature,
drives.
drive.
that
TM848
a
head
both
when
are
dataisdonebythe
drive
both
They
space
They
useanIBM-formatted,
eight-inch
per
inch
seriesofdrives
and
wri
diskette,
patented
drives
Modified
or
other
used.
for
data
doubles
sidesofthe
required
or
incorporate
may
normally
are
diskette.
recording
ting
using
haveadouble
appropriate
The
encoding
drive
storage.
data
Frequency
information
Tandon's
Model
eight-inch
microprocessor-
compact
in
by
user's
uses
storage
diskette.
Numbers
flexible
be
installed
required
data
Both
devices.
are
capable
single-density
a
proprietary
Tandon.
density
Modula-
recording
and
controller.
one
The
capabili-
for
storindusdrives
decod-
side
Model
in
an
In
of
intelligent
computers,
munication
loading,
1.3
MAJOR FEATURES
terminal
word
systems,
and
point-of-sale
processing
MICROPROCESSOR
The
an
sor
onboard
provides
1.
2.
3.
4.
5.
6.
TM848-1E
Buffered
Improved
withreduced
Write
data
True
Internal
Power
and
TM848-2E
microprocessor.
six
major
seek
capabilities
head
hysteresis.
current
recording
Ready
diagnostics
On
quality.
signal.
Self-Tests.
controllers,
systems,
error
logging,
terminals.
CONTROL
This
features:
positioning
switching
(strappable).
micro-
data
program
drives
..
feature
microproces-
accuracy
for
optimal
com-
1.1 SCOPE OF THE DOCUMENT
This
document
major
fications,
the
ticsofthe
1.2
The
rotating
access
applications.
features,
mounting
interface,
TM848-1E
PURPOSE
TM848-1E
disk
data
containsadescription
physical
and
typical
and
memories
entry,
Typical
and
and
power
timing
and
TM848-2E
OF
THE DRIVE
TM848-2E
designed
storage,
applications
functional
requirements,
and
of
the
speci-
characteris-
drives.
drives
for
are
random
retrieval
include
1-1
WRITE PROTECT
Whenawrite
in
to
the
disabled.
dri
protected
ve,
the
diskette
writeelectronics
DAISY CHAIN CAPABILITY
The
drive
ga
ting
maximum
The
last
the
interface.
plishedbya
socket.
provides
functions
of
four
drive
resistor
the
necessary
units
on
the
The
address
to
at
the
daisy
terminations
array
chain
plugged
is
inserted
selection
daisy
user's
terminates
are
intoaDIP
and
chain
option.
accom-
are
a
INTERNAL TRIM ERASE
The
sary
drive
for
provides
proper
the
trim
erasureofdata.
control
signals
INDUSTRY STANDARD INTERFACE
COMPATIBILITY
neces-
normal
direct
system,
The
TM848-2E
difference
numberofheads.
for
operation.
drive,
andaread/write
TM848-1E
is
between
both
models.
spindle
a double-sided
Each
system,ahead
is a
The
drive
system.
single-sided
the
two
circuit
consists
positioning
drive.
drive.
drives
boardisidentical
The
is
of
The
only
the
a
The
driveiscompatible
useanindustry
standard
with
controllers
interface.
ACTIVITY INDICATOR
An
activity
panel,isautomatically
drive
also
mode.
is
used
indicator,
selected.
as
an
This
indica
located
illuminated
front
tor
in
on
panel
the
the
when
L.E.D.
diagnostic
DIRECT DRIVE, BRUSHLESSD.C.
MOTOR
The
spindle
direct
improved
accuracy.
COMPACT
The
reduced
one-half
conventional
drive,
motor
the
motor
brushless
SIZE
size
of
mounting
drive.
is
start
the
a
crystal
D.
time,
drive
space
controlled,
C.
motor
and
occupies
required
DISKETTE LEVER LOCK SOLENOID
that
front
the
for
speed
only
for
is
When
provided
diskette's
plastic
the
Closing
cone/clamp
centering
drive
stant
controlled,
The
recording
leverislatched.
The
track
assembly
positioner
one
Whenawrite-protected
into
ables
Write
to
operation,
track
a
erasedto0.012-inch,
Data
read
crossover
data-clock
the
guide
back
hub.
speed
head
heads
by
track
the
the
Protect
the
interface.
is
recovery
amplifier,
diskette
for
the
jacket
rails.
stop
and
the
system,
and
The
direct
is
medium
are
means
and
uses
linear
drive,
write
status
a 0.013-inch wide,
recorded.
detector,
separationisprovided.
leverisopened, access is
insertion
is
accurately
Its
disk
diskette
clampingofthe
drive
of
360
drive,
loadedinto
whenever
positioned
of
its
associated
a 3.6
degree
movement.
the
Write
electronicsofthe
output
When
Then,
nominal.
electronics
filter,
and
ofadiskette.
locationisensured
ejector.
lever
resulting
hubisdriven
RPM
brushless
con
a
stepper
rotationtocause
diskette
Protect
signalisavailable
performing
this
inel
differentiator,
digitizing
positioned
activates
in
diskette
at
by
a
D.C.motor.
tact
with
the
over
the
motor/band
electronics.
is
sensor
drive,
nominal,
track
ude
is
a low-level
circuits.
The
by
by
the
accurate
to
the
a con-
crystal-
the
diskette
desired
This
inserted
dis-
and
a
write
data
tunnel
zero
No
a
a
The
diskette
by
the
1.4
The
require
host
lever
system.
lock solenoidiscontrolled
FUNCTIONAL DESCRIPTION
drives
no
are
fully
operator
self-contained,
intervention
during
and
1-2
In
addition,
lowing
1. A
2.
the
driveissupplied
sensor
Head/Carriage
over
The
each
systems:
Track
Track
TM848-2E
consisting
0
o.
with
the
sensor
detects
Assemblyispositioned
has
two
of
an
when
index
infrared
sensors,
fol-
the
L.E.D.
light
tioned
index
The
sided
installed.
at
the
3.
A
Write
write
tabisremoved
POWER
The
of
the
tests
These
away
stepping
of
these
L.E.D.bythe
ONSELF-
drive
conductsapoweronself-testaspart
normal
do
not
tests
from,
out
testsisindicated
source
drive
interface.
electronics
andaphototransistor,
to
generate
hole
on
can
or
double-sided
Thisoutputsignalispresent
Protect
a
signalwhen
the
disketteisdetected.
determine
sensor
whenawrite-enable
from
the
diskette.
TESTS
poweronsequence.
requireadiskette
are:
the
head
carriage
Track
toward
following
0,
and
TrackO.Failureofeither
flashing
the
on
the
to
head
sequence:
if
a single-
diskette
disables
Twoofthe
be
inserted.
stepping
carriage
front
panel
posi-
an
is
the
in,
Opening
required
diskette
an
error
1.5
A
representativedriveisshowninFigure
The
zon
tal
must
is
mounted
The
lessD.C.
The
tachometer
and
closing
to
repeatatest
lever
cycle.
must
be
the
diskette
that
has
left
opentocomplete
failed.
PHYSICAL DESCRIPTION
drive
canbemountedina
plane.
beonthe
spindleisrotated
crystal-controlled
However,
uppermost
horizontally.
motor
with
control
the
the
byadirect
an
speedofthe
verticalorhori-
logic
circuit
side
when
drive,
integral
servo
tachometer.
circuit
spindle.
lever
the
brush-
is
The
1-1.
board
drive
and
3
flashes,
3
flashes,
third
A
ever
the
haveadiskette
diskette
place,orthe
error
L.E.D.inthe
message
3
flashes,
then
then
test
monitors
diskette
leverisclosedwithou
spindle
following
then
2:
Fails
Track
sensor
to
3:
Fails
Track
sensor
to
the
lever
inserted
motor
flashes
4: No
lever
to
0
is
zero.
to
0
is
one.
index
is
closed,
into
the
t a
failstooperate,
on
the
sequence:
index
closed.
step
in
or
Track
always
step
or
always
sensors
drive.Ifthe
frontpanel
pulse
equal
out
Track
equal
when-
and
diskette
from
to
must
in
an
wi
th
Operator
0
0
vided
of
the
The
tionedbya
microprocessor-controlled
read/write
ceramic
15,000
The
moun
above
are
directlyinto
circuit
ates
access
viaahorizontal
drive.
read/write
structures
operating
con
trol
ted
the
routed
board,
the
brushlessD.C.
double-head
split
band
heads
hours.
electronics
onaprin
chassis.
through
the
mounted
for
diskette
slot
positioner
are
glass-bonded,
withalife
ted
Power
logic
circuit
under
spindle
loading
locatedatthe
assemblyisposi-
mountedtoa
stepper
of
circuitboard
and
connectors
motor.
expectancy
the
dri
interface
board.
the
drive,
motor.
is
pro-
front
The
ferrite/
of
ve
are
located
signals
plugging
A second
oper-
1-3
FIGURE
1-1
OISI{ DRIVE
SECTION
PRODUCT SPECIFICATIONS
INTRODUCTION
This
section
TM848-1E
2.1 MECHANICAL SPECIFICATIONS
contains
and
TM848-2E
the
mechanical,
drives.
electrical,
reliability,
2
and
environmental
specifications
for
the
2.2
2.3
2.4
Figure
2-1
contains
the
physical
dimensionsofthe
drive.
ELECTRICAL AND OPERATIONAL SPECIFICATIONS
The
electrical
and
operational
specifications
are
locatedinTable
2-1.
RELIABILITY SPECIFICATIONS
The
reliability
specifications
are
locatedinTable
2-2.
ENVIRONMENTAL SPECIFICATIONS
The
environmental
specifications
are
locatedinTable
2-3.
, a n aD n CORPORATION, CHATSWORTH, CALIFORNIA
2-1
91311
179049-001
REV.A
12.00
t
(304.8
MM)
8.00
(203.2
0'75~jl
(19.0
MM) .
I
I
MM)
(88.9
I
3.50
I
;0.149
~f--------1
MM)
0.156
0.430
X
4PLCS
DIA TOP X
DIA BOTTOM
DEEP
8.550~
I
~O
~~;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;~~MM)
NOTES:1.DIMENSIONS
(217.2
MM)
2. TOLERANCE ON
3. WEIGHT
IS
APPROXIMATELY
I
II~OO
ARE GIVEN IN INCHES. METRIC EQUIVALENTS ARE IN PARENTHESES.
ALL
1.60
(40.6MM)
DIMENSIONS
5.7
I
..-j
IS±.020
POUNDS.
INCH.
FIGURE 2-1
DISK
DRIVE OUTLINE DRAWING
, a n aD n
CORPORATION,
CHATSWORTH, CALIFORNIA 91311
2-2
179049-001
REV.A
Loading...