Toshiba ND3521 Installation Notes

TOSHIBA AMERICA INFORMATION SYSTEMS, INC.
DISK PRODUCTS DIVISION
9740 Irvine Blvd.
P.O. Box 19724
Irvine, CA 92713-9724
714/583-3000
INSTALLA TION NOTES
FOR THE
TOSHIBA ND3521/3561 3.5" DISKETTE DRIVE
©1969 TOSHIBA AMERICA INFORMATION SYSTEMS, INC.
Al rights reserved
,_. . ... , Doc. #87019
Contents of fits manual are subject to change without prior notice
Congratulations and thankyou for purchasing a Toshiba disk drive. Your Toshiba disk drive
is of the highest quality and should be fully compatible with industry standards. When prop¬
erly installed and configured, your drive is designed to give you years of trouble-free opera¬
tion.
GENERAL INFORMATION
Systems supported: IBM PC, IBM XT, IBM AT (Old and new versions).
IMPORTANT NOTE: The TOSHIBA ND3521/35613.5" floppy drive may or may not be com¬
patible with non-IBM types of computers. If you have any problems with the installation,
contact your dealer or distributor who supplied you with the product
Parts List - 3.5" Installation Kit
• 2 mounting brackets (with 8 screws)
• 5.25" black faceplate
• Gray ejection button and faceplate (optional)
■ DC power cable adapter
• PC board adapter
> AT rails (optional)
HARDWARE INSTALLATION
IMPORTANT NOTE: When handling disk drives, grasp the drive at the frame. Never
apply force to any other areas of the drive.
Before installing your Toshiba floppy disk drive into your computer, the jumpers on the drive's
PCB (printed circuit board) must be set in the proper position for the system you are using.
Pin No.
Signal Name
Pin No.
Signal Name
1
GND
2
DENSITY SELECT/DISK CHANGE*
3
GND
4
(RESERVED)
5
GNU
6
DRIVE SELECT 3"
7
GND
8
INDEX
9
GND
10
DRIVE SELECT 0
11
GNU
12
DRIVE SELECT 1
13
GND
14
DRIVE SELECT 2"
15
GND
16
MOTOR ON
17
GND
18
DIRECTION SELECT
19
GND
20
STEP
21
GND
22
WRITE DATA
23
GND
24
WRITE GATE
25
GND
26
TRACK 00
27
GND
28
WRITE PROTECTED
29
GND
30
READ DATA
31
GND
32
SIDE SELECT
33 GND
34
READY/DISK CHANGE
' ND3521 is jumper selectable for READY or DISK
"Not used on ND3521/3561_
CHANGE on Pin 34. Pin 2 is always Disk Chaige.
TABLE 1 - INTERFACE PIN ASSIGNMENT
JUMPER OPTIONS:
ND3521/3561 jumper options are selected by mounting shorting dugs on the connectors
found on the drive's PCB (see Figure 1).
JUMPERS AND CABLES:
If your floppy drive ribbon cable has a split and is twisted between the A & B connector, the
Drive Select Switch, located at the back of the drive (see Figure 1) should always be set to
DS1. The drive may have been shipped with the Drive Select Switch set to DS0, consult the
switch and jumper diagrams in Figure 1 and reset it before installing your drive.
NOTE:
Systems that have a drive ribbon cable with a split and twist between the drive connectors
will use the DS1 position for either the A or B drive.
PIN THIRTY-FOUR;--
Pin 34 on the floppy disk drive interface, is the main item that may change from one type of
system to the next Most XT style systems do not use Pin 34. In AT systems, using 1,2mb
style controllers, Pin 34 is used as a DISK CHANGE line, in most instances. Use DISK
CHANGE ifyou keep getting the same directory, no matterwhat diskette is installed. In some
systems, Pin 34 is used as a READY line.
IMPORTANT NOTE: For a more complete description of the drive interface, see your
computer's technical or hardware reference manual.
JUMPER PINS
\sHUTTER
ATTACHED TO
FRAME
1
ND3S21 \
PIN 2
PIN34 JUMPER PIN POSITION-
A
DISK CHANGE
READY
M 0
• o
1
B
OPEN
DISK CHANGE
C
OPEN
READY
I 1
o o
4
ND3561
JUMPER CARRIAGE
vPNS STEPPER
\
MOTOR
(HC'^rv'DBIVE select
^SWITCH
A
INPUT LOW.2MB, HIGH. 1MB
II°o
B
INPUT LOW-1MB, HIGH. 2MB
c
OPEN MODE IS CHANGED BY
INTERNAL SFNSOR
_
*DS1 DSO Note: * - factory settings (most applications use factory settings)
FIGURE 1 - JUMPER SELECTIONS
15-4001 -B FIGURE 2 - INSTALLATION DIAGRAM
Rev. 07
ND3t>21/3561 Installation Notes
P/N 400000011-AO