Eberline ESP-1 - Page 59

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5-10

b.

Reinstallation

of

PC

boards:

(1)

Insert

the

four

screws

into

the

comer

holes

of

the

Lucite

display

mounting

so

that

it

holds

the

keypad

board

in

place

and

so

that

the

screws

in

the

Lucite

line

up

with

the

threaded

holes

in

the

case.

Tighten

the

screws.

(2)

Position

the

upper

PC

board,

component

side

up,

so

that

the

holes

in

the

board

line

up

with

the

threaded

holes

in

the

corners

of

the

instrument

case.

Insert

the

screws

and

screw

them

down

loosely.

(3)

Holding

up

the

lower

board,

position

the

speaker

in

its

mounting.

(4)

Pulling

up

carefully

on

the

lower

board,

raise

the

forward

edge

of

the

upper

board

enough

to

allow

the

speaker

retainer's

channel-shaped

support

for

the

upper

board

to

be

positioned

so

that

the

board

is

in

the

channel.

The

holes

in

the

speaker

retainer

should

be

lined

up

with

the

threaded

holes

in

the

case.

(5)

Making

sure

that

the

speaker

leads

are

not

pinched

under

the

retainer,

screw

the

retainer

in

tight.

(6)

Tighten

the

two

screws

on

the

upper

board.

(7)

Guide

the

coaxial-connector

lead

through

the

cutout

at

the

rear

of

the

lower

board.

(8)

Insert

the

coaxial

connector

through

the

opening

in

the

front

of

the

case

and

guide

the

lower

board

into

position.

(9)

The

hole

in

the

center

(rear

edge)

of

the

lower

board

should

line

up

with

the

threaded

hole

in

the

speaker

retainer.

(10)

Insert

the

screw

and

turn

it

down

loosely.

(11)

Insert

the

screws

to

hold

each

corner

of

the

upper

board.

(12)

Tighten

the

mounting

screws

on

the

lower

PC

board.

(13)

Install

the

lockwasher

and

nut

on

the

coaxial

connector

and

tighten

nut.

(14)

If

the

speaker

was

removed,

solder

the

speaker

leads

to

the

points

on

either

end

of

the

label

SPK

on

the

lower

circuit

board.

(15)

If

the

battery

leads

were

unsoldered,

solder

the

red

lead

to

the

+

point

and

the

black

lead

to

the

point

on

the

lower

circuit

board.

(16)

Install

the

side

access

cover.

(17)

Install

the

batteries,

noting

polarity.

(18)

Install

the

bottom

cover.

ESP1.MAN/February

1992

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