AT&T PC 6300 - Page 145

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n

n

n

fi

INSTALLATIONS

fl

n

p

n

n

n

n-

The

Jl, J2,

and

J3

connectors

on

the

DTC

Controller

provide

the

following;

•

The

Jl

connector

is,

the

control

connector.

This

connector

transfers

the

control

signals

to

and

from

the

HDUs.

Two

HDUs

can

be

installed

using

a

Daisy

Chain

Connection.

•

The

J2

and

J3

connectors

are

data

connectors.

These

connectors

transfer

data

to

and

from

the

HDUs.

The

drive

selection

is

determined

by

the

settings

on

the

HDU,

not

by

the

choice

of

connectors.

The

Jl,

J2,

and

J3

connectors

on

the

WD

Controller

provide

the

following:

•

The

Jl

connector

is

the

control

connector.

This

connector

transfers

the

control

signals

to

and

from

the

HDUs.

Two

HDUs

can

be

installed

using

a

Daisy

Chain

Connection.

•

The

J2

and

J3

connectors

are

data

connectors.

These

connectors

transfer

data

to

and

from

the

HDUs.

The

J2

connector

must

be

used

in

a

1-HDU

configuration.

The

J3

connector

is

used

for

the

second

HDU

in

a

2-drive

configuration.

8.

For

the

WD

Controller,

go

to

Step

15.

For

the

DTC

Controller,

proceed

with

Step

9.

n

n

n

n

9.

Verify

jumpers

are

present

on

W1

and

W2

Pi

(Figure

3-32).

This

defines

the

HDU

Controller

port

address

as

320.

3-57

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