Eventide ARGUS 3000 - Page 38

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u

CAOT1ON

I

'

Do

not

remove

the

red-marked

screw

on

the

top

cover.

This

screw

does

not

secure

the

rear

cover.

*—'

This

screw

is

not

as

long

as

the

others

because

there

is

not

as

much

clearance

at

this

location.

If

you

remove

this

screw,

be

sure

to

put

the

correct

screw

back

in this

location

so as

not

to

damage

\

j

the

unit.

4.

The

rear

cover

is

connected

to

the

CPU

board.

Slowly

pull

the

rear

cover

out

of

the

unit

housing

]

i

until

the

board

is

exposed

approximately

1-1/2

inches.

5.

A

ribbon

cable

connects

the

solder

side

of

the

CPU

board

to

the

power

supply

board.

Disengage

(

I

this

connector

and

slide

the

CPU

board

completely

out

of

the

unit's

housing.

6.

On

the

rear

cover

there

are

two

pan-head

screws,

located

at

either

end of

the

25

pin

D-connector,

i

|

which

secure

the

rear

cover

to

the

CPU

board.

Separate

the

CPU

board

and

rear

cover

by

first

[j

removing

these

screws.

j

f

Insert

The

New

CPU

Board

Li

7.

Remove

the

new

CPU

board

from

its

protective

packaging.

II

8.

Check

to

make

sure

that

the

ROM

chips are

on

the

new

CPU

board.

(Refer

to

Figure 2

on

page

8

for

location

of

ROM

chips

on

3000

CPU

board.

Refer

to

Figure

3

on

page

11

for

location

of

ROM

, ,

chips

on

5000

CPU

board.)

{j.

9.

If

new

CPU

board

has

the

required

ROMs,

proceed

to

step

10.

If

the

ROMs

are

missing

from

the

board,

remove

the

ROMs

from

the

old

CPU

and

insert

them

in

the

new

CPU

using

the

procedure

|

i

outlined

in

Sub-section

3.2

(for

the

3000)

and

Sub-section

3.3

(for

the

5000).

Reassemble

the

Arjfus

i!

^

10.

Connect

the

rear

cover

to

the

new

CPU

board,

securing

it

in

place

with

the

two

pan-head

screws

on

either

end

of

the

D-connector.

U

NOTE

j

|

The

screws

mate

with

locking

type

threads

so

that

some

turning

resistance

will

be

felt

when

the

\_\

screws

are

seating.

t

i

11.

Insert

the

new

CPU

board

into

the

unit

housing

as

follows:

D

a)

Hold

the

ribbon

cable

out

of

the

way

and

insert

the

CPU

board

into

the

slot

formed

by

the

top

i^

and bottom

covers

until

about

one

inch

of

the

board

is

exposed.

^

NOTE

i i

You

may

encounter

some

resistance

when

the

board

gets

to

the

deflection

yoke.

Just

keep

pushing

J-J

gently

but

firmly

until

the

board

moves.

j

|

b)

Insert

the

ribbon

cable

into

the

connector

on

the

solder

side

of

the

board.

Hold

the

ribbon

cable

U

against

the

solder

side

of

the

CPU

board

and

push

the

board

all

the

way

in.

U

Argus

Maintenance

Manual

Part

#5006

July,

1993

Page

33

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