Tandon TM602S Service manual

TANDON OEM OPERATING AND SERVICE MANUAL
MODEL NUMBERS TM602S, TM603S,AND TM603SE
5.25" RIGID DISK DRIVES
SEPTEMBER
20, 1982
PRELIM'
RY
TANDON CORPORATION
20320 PRAIRIE STREET
CHATSWORTH, CA 91311
TEL. NO.: ( 213) 993-6644
TWX NO.: 910-494-1721
TELEX NO.: 194794
TANDON INTERNATIONAL GMBH
AM SUEDPARK 7A
D-6092 KELSTERBACB, WEST GERMANY
TEL. NO.: 06 11/49 6107 2091
TELEX NO.: 411547
pIN 187275-004 Rev .. C

CONTENTS
Page
Number
SECTION I--GENERAL INFORMATION
1.1 Scope 1-1
1.2 Introduction ....•.•...............•.•.• 1-1
1.3 Disk Drive Performance Characteristics. 1-1
1.4 Disk Drive Model Specifications .•••.••• 1-1
1.5 Pqysical Dimensions ••..•...•.••.•.•..•• 1-4
SECTION II--INSPECTION, INSTALLATION, AND INTERFACES
2.1 Introduction ••••••••••.••..•.••.•.•..•• 2-1
2.2 Unpacking and Inspection •••••••••••.•.• 2-1
2.3 Mounting Characteristics •••••••••••••.• 2-3
2.4 Power Cabling •••••••••••.••.••••••••••• 2-3
2.5 Standard Interface ••••••••••.•.•••••••• 2-3
SECTION III--THEORY OF OPERATION
3.1
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.2 .. 6
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
3.4
3.4.1
3.4.2
Introduction .•..•.•••.••.•••••.••••.••• 3-1
Input Control Lines ••.•••••..•••••••••• 3-2
Reduced Write Current .•••.•••..••••.••. 3-2
Write Gate ••••••.•••••••.•••••••••.•••• 3-2
Head Select ••••••••••.•••.••••••••••••• 3-3
Step Interface ••••••••••••••••••••••••• 3-3
Di rect i on In •••••••••••••••••.••••••••• 3-4
Drive Select ••••••••••••.•••.•••••••••• 3-4
Output Control Lines ••••.••••••••••••••• 3-5
Drive Selected ••••••••••••••••••••••••• 3-5
Seek Complete •••••••••••••••••••••••••• 3-5
Track 00eJ •••••••••••••••••••••••••••••• 3-5
Fault 0 •••••••••••• ,. •••• 3-6
Line Ready •••••••••••••••••••••••••.••• 3-6
Index 3-6
Data Transfer Lines ••••••••••••••.••••• 3-6
MFM Write Data •••••••••.••••••.••••.••• 3-6
MFM Read Data •••••••••••••••••••••••••• 3-7

Figure
Number
1
2
3
4
5
6
7
8
9
LIST OF ILLUSTRATIONS
FIGURES
Page
Title Number
Typical starting Current at Nominal
Voltage 1-3
Disk Drive Physical Dimensions 1-5
Locations of Interface Connectors 2-2
J 3 Connector ........•.............•...•• 2- 3
Jl Connector Dimensions 2-4
J2 Connector Dimensions ••............•.• 2-4
Control Signal Driver/Receiver
Circuit Combination .•........••...•.•..• 3-1
Step Mode Timing Diagram •..•••...•.••..• 3-4
Data Line Driver/Receiver Circuit ....••• 3-7
TABLES
Table
Number Title
Page
Number
1
2
3
4
Disk Drive Performance Characteristics •• 1-2
Disk Drive Model Specifications ....•...• 1-4
Standard Interface ...••........••...•..• 2-7
Head Select .•............•.••..• " ..... ". 3-3
APPENDIX
Appendix
Number Title
Page
Number
A
B
C~stomer Information Bulletins •.......•• A-I
Schematics ""." •.. " .. "...................... B-1
ii

1.1
SECTION I--GENERAL INFORMATION
SCOPE
This manual contains information useful in the installation
and operation of Tandon Corporation's TM600 family of 5.25"
rigid disk drives. This manual also contains interface
requirements and descriptions of signals. TM600 refers to
Model Numbers TM602S, TM603S, and TM603SE, as appropriate.
1.2
INTRODUCTION
The TM600 family of 5.25" rigid disk drives are
low-dost, random access memories that use moving head,
noncontact recording techniques. There are both two- and
three-platter models, which use standard Winchester
technology and 130 millimeter rigid media.
This drive consists of storage media that is contained
within the drive in a fixed (nonoperator removable)
configuration, read/write and control electronics, the drive
mechanism, a read/write head, a precision split band
positioning device, and an air filtration system.
Interface flexibility is provided by using an industry
standard interface on the drive. The "s" version is
compatible with larger capacity disk drives. Compatible is
defined as using the same pin assignment where the signal and
the function are common.
1.3
DISK DRIVE PERFORMANCE CHARACTERISTICS
The information contained in Table 1 pertains to all Imodels
of the Tandon TM600 family of disk drives.
1.4
Table 2
and the
DISK DRIVE MODEL SPECIFICATIONS
contains a list of the drive models
number of platters each one has.
1-1
available

Table 1
Disk Drive Performance Characteristics
Model TM602S TM603S TM603SE
Disks/Platters
Heads/Recording
Surfaces
2
4
3
6
3
6
TPI II Cit • II •• II •••• Cit Cit II It ••• 41) •• 254 TPI II ••• 0 .. II ., •• 0 • ,. ••••• II ••
Cylinders 153 153 230
RPfv1 •••••.•• Cit ••••••• II .... II ••• e. 0 • 0 ... ., • Cit ,,3600 RPM +1 percent ... 0 •••• Cit ••••
Recording Capacity,
Unformatted:
Per Drive 6.38 MBytes 9.57 MBytes 14.35 MBytes
Per Surface 1.59 MBytes 1.59 MBytes 2.39 MBytes
Per Track ..•..•..•..•...••.. 10 .40 KBytes ...•.....••....•.......••.
\I
Trans fer Rate ...•••.••..•.•••.•.••••... 5Mbi ts per second .•..•..•.•.••
Recording
Density (BPI)
Tracks
7690
612
7690
918
9625
1380
milliseconds .....•.••.•..•..••.•.•• •••••••••• 0 ••••• 3
153 ms, 99 ms 153 ms, 99 ms 210 ms, 137 rns
ramped seek ramped seek ramped seek
Head Settling Time ••.....•..•....... 15 milliseconds ..........••..•.•
Average Latency ..........•.•...••• 8.34 milliseconds ......••.........
7\ccess Time
Track-to-Track
Average
Mechanical Dimensions
Height .. 0 ••• 0 0 ., e .... •••• ., • Cit •• 0 0 ., •• 3. 25 inch I) ••• ., 0 I) It ...... II ...... 0 II .. 6) 0 •• 0
wid th 0 Cit ,. 0 " 8' • crt •••• "5 I) 75 inch CD •••• It 4) •• 0 Cit •(II •• <> 0 CD • ., • 0 0 0 •
Length. fit ••• Cit .. "0 •••• ,. • ., •••• (III co .. (I Cit .8 11) 00 inch., .. 0 0 •••••••• CD " • •• 0 0 •• Cit Cit •• It
Error Rates
Soft Read ...•••••.•.••..•.•.•••... lXl0
l0
bits ...•..••..••..••••••.••
Hard Read •.....•..••••••..•••.•••. lX10 ~ 2 bits ..
Seek Errors .••.....•...•...•...•.• 1X10 seeks ...•••.•..••.•.•.•.•••.
Power
+l:2V D. C. +/-
+5V D. C. +/-
10% 1.5 amps tyical, 5 amps maximum for 10 seconds
with no more than 5 millivolts PARD* (see Figure I).
5% .. 8 amps typical with no more than 50 millivolts
PARD*
Environmental
Ambient
Temperature:
Operating: 16°C to 46°C (50
0p
to l15
0
p)
Nonoperating: -35.4
0C
to 60°C (~400p to 140
0
P)
Relative Humidity: 8% to 80%
Maximum Wet Bulb Temperature:
*Periodic and Random Deviation.
Specifications SUbject To Change Without Notice.
1-2

>
N
+>
I()
+
o
N
...
...
....
0
...
0)
[)
co
W
~
z
9
,.....
z
a::
::>
....
co
a::
w
....
u..
«
It)
w
~
i=
'I:f
o
Figure 1
Typical Starting Currents At Nominal Voltage
1-3

Table 2
Disk Drive Model Specifications
Model
Number
TM602-S
Tt1603-SE
TM603-S
1.5
Number of
Platters
2
3
3
PHYSICAL DIMENSIONS
Kind of
Interface
Standard
Standard/Extended Version
Standard
The major physical dimensions of the TM600 family of drives
are contained in Figure 2. These dimensions are given
in English and in metric units.
1-4

0.06 ±0.01 in.
(1.6 ± 0.3 mm)
TAPPED MOUNTING HOLES FOUR
ON BonOM. TWO ON EACH SIDE
6·32 UNC X 31 in .. 17.9 mml DEEP 8
PLACES.
I
3.25 ±0.01 in.
(82.6 ± 0.3 mm)
SIDE VIEW
3.12 ± 0.02 in.
(79.2 ± 0.5 mm)
LJ
L87±OO2in
(47.5 ±0.5 mml
8.00 in. maximum -------- ....... 1I
...--.-------- (203.2 mm)
I
0.19 ±0.01 in.
(4.8 ± 0.3 mm)
3.38 ±0.01 in.
85.9 ± 0.3 mm)
5.88 ±0.01 in.
(149.4 ± 0.3 mm) BOTTOM VIEW
5.75 ± .02 in.
(146.1 ± 0.3 mm)
5.50 ± .02 in.
139.7±0.5 mm)
0.06 ±0.01 in.
(1.6 ± 0.3 mm)
Figure 2
Disk Drive Physical Dimensions
1-5

2.1
SECTION II--INSPECTION, INSTALLATION, AND INTERFACES
INTRODUCTION,
This section contains information pertinent to the inspec-
tion, installation, and interfaces of the Tandon TM600 family
of rigid disk drives.
The electrical interface between the drive and the host
system is via four connectors. Jl provides control signals
for the drive. J2 provides for the radial connection of
read/write data signals. J3 provides for D. C. power. J4
provides for frame ground. Figure 3 contains the locations
of the interface connectors.
2.2 UNPACKING AND INSPECTION
The drive is shipped in a protective container which,
when bulk packaged, minimizes the possibility of damage
during shipment. The following procedure is the recommended
method of uncrating the drive.
1. Place the shipping container on a flat work surface.
2. Remove the upper half of the inner container.
3. Remove the drive from the lower half of the
inner container.
4. Check the model number and top assembly description
against the packing slip.
5. Visually examine the contents of the shipping
container for possible damage.
6. Notify the
is found.
carrier
immediately if any damage
7. The inside chamber of the drive is a sealed
compartment that must not be opened.
NOTE
REMOVAL OF THE COVER
INVALIDATES THE WARRANTY.
2-1
OF THE
DRIVE

FRONT PANEL~
OR CABLE
HOL~SS~4 PLACES)
HARNESS
V-AXIS
COMPONENT SIDE
OF CIRCUIT BOARD
X-AXIS
Figure 3
Connectors
of Interface
Locations
2-2