Sharp EL-8130 User manual

Table of contents

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1.

FOREWORD

In

addition

to

the

ultra-thin

7

mm

calculators

which

are

already

having

high

reputations

in

the

market,

the

model

EL-8130

now

made

public

by

Sharp

is

also

a

full-fledged

8-digit

calculator

that

is

only

5

mm

thin.

This

super-slim

calculator

is

still

provided

with

various

functions

such

audio

input

verifier

and

automatic

power

off

circuit,

etc.

TABLE

OF

CONTENTS

LC

FOLeWwoOrd,

«642

40¢4«0%

startet

ese

|

2.

SPE

CUICAMONS:

:

fede.

6

ast

can

aS

]

Bc

DOI

ViCI

Oi

etn

eo

ee

Ee

A

ee

Re

2

4.

Circuit

Diagram

.............

5

5.

Parts

&

Signal

Position.........

6

6.

Signal

Wave

Form............

6

a

gg)

ee

ee

ee

7

Ov

Parts

GUIGE:..,

a5.

ood

ee

ae

eke

8

Tone

emitting

keys

2.

SPECIFICATIONS

+

tat

Excess

EI

GI

Ey

aiteitalia

I

EIGIE

PI

EI

Es

Display:

FEM

type

liquid

crystal

display

(8

digits

for

the

numeral

part,

1

digit

for

the

symbol)

@

Operation

capacity:

8

digits

@

Memory:

1

@

Power

source:

Silver

oxide

battery

(G-10

x

2

or

(SR-1130)

x

2

usable

time

600H.

(Please

note

that

only

Union

Carbide

model

389,

and

Ray-O-Vac

model

RW49

or

equivalent

should

be

used.)

@

Dimensions:

68(W)

x

4.9(H)

x

124(D)

mm

3.

SERVICING

3-1.

Disassembly

and

reassembly

of

the

set

Being

only

5

mm

thin,

this

calculator

requires

great

cares

when

disassembled

and

reassembled

at

the

servicing.

In

particular,

pay

attention

not

to

give

the

liquid

crystal

and

the

buzzer

a

strong

force.

@

Disassembly

l.

ny

wh

Remove

the

screw

located

at

the

center

of

the

bottom

cabinet

to

take

out

the

bottom

cabinet.

The

chassis

will

then

be

removed

together

with

the

top

cabinet.

.

Pull

out

the

two

batteries.

.

Carefully

peel

off

the

black

masking

sheet

which

is

applied

to

the

chassis.

.

Carefully

peel

off

the

tape

(silver

color)

which

is

applied

to

the

chassis.

.

The

chassis

is

being

fixed

by

13

pawls

which

are

located

on

the

top

cabinet.

By

using

a

pincettes,

straighten

each

of

these

pawls,

then

the

chassis,

top

cabinet,

liquid

crystal

and

anisotropic

tape

will

all

be

independent

from

each

other.

.

Remove

the

display

spacer

from

the

top

cabinet,

then

the

filter

will

also

be

removed.

Note:

Different

from

the

above,

as

for

the

sets

up

to

250,000th

unit,

the

display

spacer

cannot

be

removed

since

it

is

directly

fixed

to

the

top

cabinet.

Refer

to

““Reasembly

4”

described

later.

_

The

chassis

and

PWB

are

being

attached

to

each

other

by

means

of

both-side

tape

which

is

applied

around

the

keys

OFF

and

ON/C.

Holding

the

chassis

by

one

hand,

carefully

remove

the

PWB

by

another

hand.

.

Remove

soldered

leads

of

the

PWB

(at

three

portions).

.

Remove

battery

terminai.

@®

Reassembly

For

the

reassembly,

it

is

so

each

to

take

the

procedures

reverse

to

those

for

the

disassembly.

However,

it

will

reguire

the

following

to

be

taken

in

consideration.

1.

Leads

between

the

battery

terminal

and

the

PWB

should

be

settled

as

peered

¢

in

the

sroove

of

the

chassis.

2.

The

PWB

and

liquid

crystal

should

be

aligned

exactly

by

means

of

an

anisotropic

tape.

Take

care

not

to

touch

their

joint

by

finger

nor

to

soil

it

with

impurities.

Key

rubber

(ON/C)

Key

rubber

(OFF)

Red

“SN

:

Pay

$4

t

q

..

r

spacer

cr

onl

3.

As

shown

in

the

(Fig.

3),

the

key

rubber

and

switch

spacer

should

be

set

exactly

matching

the

respective

bosses

of

the

chassis.

4.

Change

in

the

method

to

attach

the

display

spacer

and

filter.

(1)

Up

to

the

250,000th

unit

Caulking

Display

spacer

Aluminium

frame

Display

mask

Filter

_

*

Since

the

display

spacer

is

directly

caulked

to

the

chassis,

it

isnot

possible

to

replace

the

filter

with

a

new

one.

(2)

After

the

250,001st

unit

Display

spacer

Caulking

a

F

Aluminium

frame

FI

Display

mask

ey

&

=

es

aes

ey

2

ee

CMLL

|

aaa

ME

TID

6

Fig.

4

Filter

Display

angle

*

With

this

change,

it

becomes

possible

to

remove

the

display

spacer.

As

for

the

sets

up

to

250,000th

unit,

it

can

been

seen

from

the

above

that

the

display

spacer

and

filter

are

fixed

to

the

top

cabinet

and

so

if

you

find

some

trouble

in

them

at

the

servicing,

it

is

recommended

to

replace

such

parts

with

new

ones

which

are

applicable

to

the

sets

after

250,001

st

unit.

The

Parts

List

and

Guide

carry

only

the

new

parts.

(There

is

not

interchangeability

at

all

among

the

filter,

display

mask

and

display

spacer

in

(1)

and

those

in

(2).)

3-2.

Cautions

on

servicing

2-1.

Soldering

on

the

piezo-electric

buzzer

In

this

work,

be

sure

to

use

a

low-fusing

point

solder.

Iron

tip

temperature:

190°

+

10°X

Soldering

time:

Less

than

e

Soldering

position

3

seconds

CF

gp

Piezo-electric

buzzer

2-2

Control

adjustment

Leving

the

key

ON/C

be

depressed,

keep

Vin

to

3.15

V

to

make

surethat

the

signal

A>

is

within

the

range

of

2.9

ms

<

T

<3.1

ms.

If

the

above

value

is

not

satisfied,

adjust

it

by

using

the

control

RVR-M5513QCZZ.

Yet,

if

this

adjustment

is

not

statisfactory,

change

the

position

of

jumper

wire

to

the

opposite

side

of

the

resistor

330KQ

as

shown

in

the

figure

herof

and

again

proceed

with

the

adjustment.

More

simplanize

adjustment

|

of

above,

we

may

ask

you

VE

.

to

adjust

the

Volume

to

be

a

“

:

most

nice

buzzer sound.

330Ka+

10%

YW

4.

CIRCUIT

DIAGRAM

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PARTS

&

SIGNAL

POSITION

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PARTS

LIST

|

DCABBO337CSzz

N

J

AV

PFiLW1!154CCZZ

J

PGUMM

|

O86CCZZ

PGUMM

1081CCZZ

PGUMM

|

079CCZZ

DUNTKO338CSZZ_

|

PWB

unit

_

PTUBX

1002CCZZ

13.)

QTANZ1159CCZZ

19

Buzzer

angle

0

DCABAO340CSZZ_

|

Bottom

cabinet

(with

mylar

sheet)

PPAPMIOO3CCZZ

_

|

Memo

paper

UBAGZ

1083CCZZ

|

Book

type

case

(Export)

SPAKC2365CCZZ

|

Packing

case

(Japan)

|

SPAKC2366CCZZ

|

Packing

case

(U.S.

A)

SPAKC2434CCZZ

|

Packing

case

(Other

countries)

TiINSJ1980CCZZ

|

Instruction

book

(Japanese)

TiNSE!I981CCZZ

|

Instruction

book

(English)

|

TiNSMI982CCZZ

|

Instruction

book

(E,

F,

G,

S)

GANJ1O25CCZZ

|

Guarantee

card

(Japan)

LSTS!IOO5CCZZ

|

Service

list

(Japan)

HiLi3O028F/—|

iS:

(Li-3028)

RC—SZIOO6CCZZ

|

Capacitor

0.1

uF

RC—SZ1IO0O07CCZZ

|

Capacitor

1uF

RC—KZ!1O07CCZZ

|

Capacitor

100PF

VRC—MT2BGIOIK

Resistor

1/8W

1000hm

VRC=MT2BG334K

|

Resistor

1/8W

330Kohm

RVR—M5513QCZZ_

|

Volume

resistor

500Kohm

VHD!ISI588LI—|!

Diode

151588L1

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8.

PARTS

GUIDE