Seagate ST251NPR,ST225NPR,ST277NPR,ST296NPR Installation Manual

iV

,~

.'

or:

.

...

~

"!

' , ,

.~

";f

11,.

-,

~.

I·

\

f

\

'I

[.

I·

I

to'

).

ii,

\ \ ' .

~.

'1..

I'

•

',s

.1

....

,

,

"

.......

....

,

:

.,

~

J

, !

.

,

,

~.

'.

,

Installing

A

ST225NPRIST251NPR

.\

"

ST277NPRIST296NPR

,Disc

Drive

With

"

\~

I

I

",

'>

;11

Ii

\

~.

(-

.,

IJ

STO1

The

Host

Seagate·

Adaptor

,.

;'

l_,

~

I

~t

\

\

,)

&9

5eagate

. ' · J

I

I. Host Adaptor Set-Up

1.

Remove the Host Adaptor from the protective covering and
the rubber strips from between the connector pins.

2.

Set the starting address on the Host Adaptor.

CAOOO

•
installed at this address in
change to another

3.

Zero-Wait-State Enable:

is the default BIOS address. If there is a board'already

And

your

addre~s.

Refer to Figure

,

Installation

system, use the jumpers to

1.

pull

4

I

Figure 1: Host Adaptor

The Adaptor BIOS has four possible starting addresses.

CONFIGURATION

N'o

Jumpers Installed:

P1ns

A-B Shorted:

Pins

C-D

Shorted:

Pins A-B &

C-O

Shorted:

ADDRESS

CAOOO

C8000
CEOOO
DEOOO

(default)

• A two-pin

wait-state

can be improved on
that support
itor
boot process
to support
IBM 5162-286
nical reference manual. .

4.

Connect the logic cable to the adaptor. You may find it easier to
attach the logic cable before you install the host adaptor in the
system. Refer to Figure

• Pin-1 on the Host Adaptor corresponds to pin-1 at the
SCSI connector. The logic cable has a contrasting-color stripe
to indicate pin-1.

5.

Install the adaptor as illustrated and verify
in the slot.
which is next to the power supply. See to Figure

6.

If you encounter clearance problems when running the logic cable
behind the floppy drive, you may have to loosen the floppy mount-

ing screws and slide it slightly foward. When the operation is
completed, don't forget to slide the floppy drive back into place
and tighten the screws.

jumper

(OWS)

this line, and cannot support a

is provided on the adaptor to enable the zero-

logic

for

PC

XT/AT look-alikes. Performance

PC

AT systems (and most compatibles)

OWS

if this

jumper

or

shortly thereafter. Systems known to be unable

OWS

are

Epson Equity

XT.

Refer to the specific computer system tech-

3.

is installed. Systems that mon-

,

PC

XT-only Installations:

Do

OWS,

will hang during the

111+,

AT&T 6300+/6310 and

it

is squarely seated

not use slot number eight,

3.

drive

t

j;:

I:

1:1

:1:1:

.F

'G

1:1:

50-PIN

PIN-i t

---CJ---

E.

,

~TERRUPT

ENABLE

1:1:1: I:1

:1:1:1:

SCSI

CONNECTOR

---CJ---

o

A

c;:::;]B

C

c;:::;]o

f

BIOS

AODRESS----c===J----

JUMPERS

I: I:

1:1:1:1

:r+hJ

o

oWS

lol_

~

---CJ---

JUMPER

o

o

o

o

o

o

2

_~~_~

• 3

1

~

II. Drive Configuration And Installation

•

Do

not unpack a

• Always rest the
hard surface.

• Refer to Figure 3 during installation.

1.

Remove the top cover from your system. Retain the screws.

2.

Set the

SCSI

Adaptor recognizes devices by

• If you are installing one drive, the

• A second physical drive must be set as
jumper

3.

Drive Resistor Termination Packs: If you are installing a single

drive; the resistor termination packs must remain installed. If you
are installing two drives, remove the resistor termination packs
from the first drive.

When installing the resistor termination packs, note that pin-1 is
designated by a dot
the

PCB

drive

until you are ready to install

drive

on

an

anti-static pad; never on an unprotected

t

10

address on the drive. Refer to Figure

their

provided.

or

number one on the pack. A square pad on

indicates pin-1 at the socket. '

it

into a system.

2.

The

SCSI

10

number.

10

number is 0 (no jumper).

10

number

1.

Use the

Host

..

-;:

8.

PC

...

AT, Compaq Oeskpro
require mounting rails. The rails fasten directly to the
ing feet and allow

• For

PC

AT installations, use the narrow mounting rails (note

it

right rail is part number

4,

6-32

and

x 3/16-inch panhead screws as supplied.

• For Compaq Oeskpro

286

and Epson

Equity'"

+ installations

to slide into the system chassis.

50324-001

286,

use the wide mounting rails and

and left rail is 50324-002)

drive

mount-.

4,

6-32 x 5/16-inch flathead screws as supplied. Note that one rail

has tapped holes to allow fastening to the chassis. Use two of
the

6-32

.'

x.3/16-inch"panhead screws to secure the drive to the

chassis side.

~

Epson Equity

'"

+ and AT&T 6310 systems have rails included

with the system. Use these instead of the rails provided .

9.

Attach the logic cable assembly to the drive and Host Adaptor.
Pin-1 at the drive must mate with pin-1 at the adaptor. The logic
cable has a contrasting-color stripe which indicates pin-1. It also
has an additional connector at the drive-end to accommodate a
second hard disc drive.

10.

Drive DC Power Connection:

• Use the straight power cable assembly (refer to Figure

3)

for

Compaq installations. .

4.

Drive mounting Is system dependent. Rails cannot be installed

a front panel is in place. Remove before installing the rails.

5.

Drives are shipped with a half-height, front panel. Determine if
you need to replace it with the full-height panel. Use the same
screws to reinstall the new panel.

6.

PC

AT installations require a printed circuit cable

(PCC)
instead of a front panel. The shield protects the printed circuit
cable. I nstall as illustrated in Figure 3 usi ng the front panel screws.

7.

IBM

PC

XT

and AT&T

6300

installations require

4,

6-32

x 3/16-inch
pan head screws (packed with the rails). Tighten the screws down
evenlyt08
Use only the supplied screws

±.8inch-lbs. Overtightening may cause drive damage.

or

a Seagate-approved equivalent.

4

__

shield

if

~

__

..l_

• Use the Ny" power cable assembly (refer to Figure
and AT&T

~_._-

6310

installations, if two drives are being installed.

.J'.

3)

for

PC

XT

5

-,