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SHARP

SERVICE

MANUAL

CODE:

00ZEL5100SSME

MODEL

EL-5100S

As

for

the

EL5100S

is

changed

top

and

bottom

cabinet

of

EL5100

Next

page

(Parts

List)

are

the

only

differences

between

EL5100

and

EL5100S,

therefor

others

are

to

be

referred

the

parts

list

&

guide

of

EL5100.

And

circuit

estes

esses

TT

os

diagram,

parts

&

singals

position

are

same

as

a

EL5100.

eeeeoe

OF

e2e80

ELEMENT:

otal

disolay

PARTS NAME:

LF8034XE

NUMERAL:

10

+2

digits

|

SYMBOL:

digit(s)

5.05

1

Name:

SC43125,

SC43153

Type

:

Flat

package

POWER

SUPPLY

@BATTERY

TYPE

Alkaline

manganese

battery

(LR

44)

x

3

pes.

or

Silver

oxide

battery

(S15

or

SR44)

x

3

pcs.

@

OPERATION

TIME

LR44:

Approx.

300H,

$15

or

$44:

Approx.1000H

KEY

SYSTEM:

Rubber

key

KEY

LAYOUT

~ar

|ZO-—-AOMYM

<prwum-o

SATTERY

POWER

CONSUMPTION

0.0009

W

OF

TIME

5

minutes

BATTERY

DIMENSION(mm);

175

(W)

70(D})

9.3(H)

CALCULATIONS

Four

arithmetic

calculations,

trigonometric

and

inverse

trigonometic

functions,

hyperbolic

and

liverse

hyperbolic

functions,

angular

conversion,

reciprocal,

square

and

cube

root,

square

and

power,

logarithmic

and

exponential,

Xth

root

of

Y(x/

y),

factorial,

permutation,

combination,

coordinate

conversion,

memory,

and

statistical

calcula-

tions.

@

General

calculation

capacity;

80

steps

®

Algebraic

expression

reserve;

Capacity:

80

steps

(AER

mode)

Functions:

Cursor

step-up,

step-dwon,

insertion,

deletion,

playback.

®

Number

of

internal

calculation

digits;

Mantissa

12

digits,

Exponent

2

digits

®

Display

capacity;

24

digits

(algebraic

operation

system)

(numeral

...

mantissa

10

digts,

exponents

2

digits)

SHARP

CORPORATION

EL—51005

PARTS

LIST

NO.

|

PARTS

CODE

|

ane

CARCI

RANIC

DESCRIPTION

A

N

ze

PFILWI416CC22Z

|

C

|

Polarized

filter

C

E

18

|

i

B

A

QCNTMIOSICCZZ

|

A

A

H

24

|

PZETL1382CCZZ

Cc

|

C

|

Caushion

sheet

HDECA2068CCO!

|

A

K

=

N

|

D

|

Bottom

cabinet

(U.S.A)

HDECA2ZO068CC2ZZ

!

A

K

iN

|

D

|

Bottom

cabinet

(Other

country)

TiNSE3646CCZZ

|

A

Gi

N

|

OD

jinst.

book

(U.S.A)

=

TINSM3939CC2Z

j|

A

Q

|

N

D

|

Inst.

book

(Other

country)

(E,

F,G,S)

:

yo

LSPAKC7909CCZZ

|

AD

|

N

|

0

|

Packing

case

(U.S.A)

SPAKC7939CCZZ

| A

D

|

N

|

D_

|

Packing

case

(Other

country)

|

ae

SPAKA7908CCZZ

PA A]

N

|

OD.

Packing

cushion

for

set

(U.S.A.)

|

|

SPAKA4520CC2Z

|

A

B

D

|

Packing

cushion

for

set

(Other

country)

[—Tsraxasaascozz

[A

8

||

0

[Packing

cushion

forbatiny

|

[|

spaks5446cczz

|

A

A

|

|

0

|

Packing

sleeve

for

battery

|

|

PZETLI294CC22Z

Battery

label

at

een

ee

ee

ee

ee

ae

a

ee

ce

>

DT]

weeaaurHwiosa

|

As

TT

[wiscasizs/-i

ax

pels,

SSCS

B

|

«|

VRD-ST2BYIOlJ

|

A

—s

Resistor

1/8W

100ohm

+5%

—[wro=st2eve73s

|

aA

||

6

[Restor

VaW

a7Kohm

£08

|

|

VRD-ST2BY363¢

|

A

C

|

Resistor

1/8W

36Kohm

£5%

a

Pere

Ke

Pip

TL

SHARP

SERVICE

MANUAL

TABLE

OF

CONTENTS

L“SpeCilicahions:

4

wiv

wkhe

oe

a

as

]

2.

Main

key’sexplanation

.........

cm

3.

Disassembly

procedure

.........

re

3

j

4.

Block

diagram

............-...

Le

Pe

Sa

§

TS-Sigilss

so

arcane

oe

ceed

8

|

6.

Circuit

diagram

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

1]

7.

Parts

&

signals

position

.........

13

Be

Parts

SU

ae

aud.

Mueva

Se

et

ee

ahr

15

D.

Parts:

Qulge:

*o

d.4-o-ds

dels

Fe

oa

17

1.

SPECIFICATIONS

|

@

Key’s

Layout

|

|

ARC

HYP

“1

y

Sy

dy

r

|

oo)

BBO

MOO

D.MS

SIN

10

_

7

|

[F=£]

Fosd

2

>

=

OFF

:

sax

goss

wom

[+]

Le] [*] Lx]

LI]

Say

wy,

fy?

b

AER

|

=

gh)

GG)

GI

,

cl

te)

Ce)

C4

le) eel

GI

ma]

|

@

Display

Section

!

Display

shape:

|

+

3.3-+4

|

RAD

°

aaa

|

|

inl

Hie

bee

a

tece

tere

angog

5.05

|

tbh

sieht

feb

iia

ie

o0o0

|

|

ee

ee

atswe

(84h

cco!

Ooooo0gc

arafete

:

|

}

ee

eR

Oe

eee

ee

ae

eS

7

SHARP

CORPORATION

and

e

tute

panes

Preee

oe

.

eeF

#6

ecbhs

Pages

tote,

.

$a

Fp

pegt

e

Display

system,

Display

capacity;

Symbols;

@

Calculations

Dot

matrix

liquid

crystal

display

(LCD1601J)

24

digits

(algebraic

operation

system)

(numeral

...

mantissa

10

digits,

exponents

2

digits)

IndF

Second

function

designation

sysmbol

HYP

—_

Hyperbolic

function

mode

symbol

DEG

RAD

?

Angular

mode

symbols

GRAD

|

=

Appears,

when

there

exists

anything

to

be

displayed

1:

the

left

of

the

displayed

contents

of

an

algebraic

formula.

=

Appears,

when

there

exists

anything

to

be

displayed

t

the

right

of

the

displayed

contents

of

an

algebrai.

formula.

Appears

also

to

indicates

that

the

machine

is

in

oper:

tion

when

it

is

executing

a

calculation.

e

Battery

indicator

The

battery

indicator

is

a

grey

dot

located

in

the

righ

of

the

display.

When

this

dot

is

not

on,

the

batterk

must

be

replaced.

Four

arithmetic

calculations,

trigonometric

and

inverse

trigonometric

functions,

hyperbolic

an

liverse

hyperbolic

functions,

angular

conversion,

reciprocal,

square

and

cube

root,

square

an

power,

logarithmic

and

exponential,

Xth

root

of

Y

(X/y),

factorial,

permutation,

combinatio:

coordinate

conversion,

memory,

and

statistical

calculations.

|

80

steps

Capacity:

80

steps

(AER

mode)

Functions:

Cursor

step-up,

step-down,

insertion,

deletio:

General

calculation

capacity;

Algebraic

expression

reserve,

@

Others

Overflow

errors;

Memory;

Power

supply

;

Battery

life;

Dimentions;

Weight;

.

playback.

eet

“When

the

absolute

value

of

a

calculation

result

is

great

than

9.999999999

x

10”.

When

a

number

is

divided

by

0

(zero).

(A

+

0).

3.

When

the

absolute

value

of

a

result

of

memory

calculu.

-i

Error

symbol;

When

a

formula

that

exceeds

the

capacity

of

function

(1

greater

than

9.999999999

x

10”.

stage)

or

data

(8-stage)

buffer

is

used

for

calculation.

When

a

formula

gramatically

wrong

is

executed.

When

date

for

both

l-variable

and

2-variable

statistical

c.

culations

are

input

at

random

in

the

STAT

mode.

11

Silver

oxide

battery

(G-13

x

3)

Approx.

1000

hours

175(W)

x

70(D)

x

9.3(H)mm

Approx.

120g.

2.

MAIN

KEY’S

EXPLANATION

AER

COMP

|

STAT|

TAB

Mode

selector

|

AER:

Algebraic

Expression

Reserve

mode

This

mode

is

used

to

store

algebraic

formulas

into

the

calculator.

In

this

mode.

any

calculation

is

not

performed.

COMP:

Compute

mode

This

mode

permits

the

calculator

to

perform

(except

for

statistical

calculation)

all

sorts

of

calculations

including

four

arithmetic

calculations,

scientific

calculations

and

calculations

that

utilize

stored

algebraic

formulas

in

the

AER

mode.

STAT:

Statistical

calculations

mode

The

statistical

program

will

be

activated.

2nd

function

designation

key

@

This

key

is

to

be

operated

when

designating

the

second

function

(labeled

in

mustard)

of

the

function

keys.

(i.e.

LOG,

COS~',

etc.).

When

the

2nd

function

is

designated,

the

2nd

function

designation

symbol

(2nd

F)

is

displayed.

[2ndF]

i]

23

>

log

23

nar]

<

Bal

5

>

cos!

0.5

®

The

[2ndF

|

key

is

of

reversing

type,

and

if

it

is

pushed

by

mistake

the

Ist

function

can

be

designated

by

pushing

the

key

once

more.

1

SIN

|

[sin]

>

sin7'

(Designation

of

2nd

function)

-1

rei

=

sin

(Designation

of

Ist

function)

Display

format

exchange

key

When

a

calculation

result

is

displayed

in

the

floating

decimal

point

system,

pushing

the

key

displays

the

result

in

the

scientific

notation

system.

Pushing

the

key

once

more

displays

the

result

in

the

floating

decimal

point

system

again.

This

key

operations

does

not

work

in

the

AER

mode.

Tabulation

key

This

key

specifies

the

number

of

decimal

digits

in

the

calculation

results.

The

number

of

decimal

digits

is

specified

by

numeral

key

(Lo

|

~{9})

depressed

after

the

[TAB]

key.

To

set

the

floating

decimal,

depress

the

[TAB}

TAB]

|

e

|

keys.

Ex.

COMP

mode

(Decimal

position:

3)

so

[=]

9

[=]

=

5.556

§

[=]

2

[=]

=

2500

[|

(Floating

decimal)

$0:

Le)

79

fe).

5555555556

SiGe

2

Pel

=

25

Note:

This

key

operation

is

ineffective

right

after

or

in

the

course

of

entry

of

a

number

and

in

the

AER

mode.

DRG

RCL

[A]

~[E

|

Degree/Radian/Grad

selection

key

Used

for

calculation

of

trigonometric,

inverse

trigonometric

and

coordinate

conversion.

The

[DRG]

key

changes

the

angular

mode.

DEG

RAD

GRAD

|

(depress

)

(depress

)

|

(depress

)

Ex.

|

DEG—~GRAD:

Depress

the

|DRG|

key

twice.

((DRG)

[DRG})

Store

key

The

EL-5101

has

five

(5)

store

memory

registers.

To

designate

each

memory,

depress

the

key

followed

by

ns

(Ex.

[STO

)

AER

mode:

Designates

the

instruction

to

store

a

number

into

the

designated

store

memory.

COMP

mode:

Depression

of

the

and

=

key

clear

a

number

in

the

designated

memory

and

then

stores

a

number

being

displayed

or

calculated

result

in

the

designated

memory.

Recall

key

Recall

the

contents

of

the

designated

memory.

To

designate

each

memory,

depress

7

keys

following

the

key.

(Ex.

).

The

contents

of

the

store

memory

remain

unchanged

after

this

operation.

AER

mode:

The

contents

of

the

store

memory

are

written

as

a

constant

in

the

formula.

COMP

mode:

When

the

formulas

are

displayed,

the

contents

of

the

store

memory

are

written

in

the

formulas.

When

the

calculated

result

is

displayed,

the

contents

of

the

store

memory

are

displayed.

Store

memory

keys

AER

mode,

COMP

mode:

When

the

~

keys

are

depressed

following

the

ISTO]

or

[RCL]key,

corresponding

store

memories

are

designated.

1

.

f2ndF]

|

F

|Formula

keys

ed

5:

AER

mode;

Displays

the

formulas

in

each

area.

CD

RM.

COMP

mode;

Used

to

perform

the

calculation

according

to

the

algebraic

formula

stored

in

each

area

in

the

AER

mode.

Recall

memory

and

correct

data

key

Recalls

the

contents

of

the

independently

accessible

memory.

COMP

mode:

When

the

formula

is

displayed,

the

contents

of

the

independently

accessible

memory

is

written

in

the

formula.

When

the

calculated

result

is

displayed,

the

contents

of

the

independently

accessible

memory

is

displayed.

AER

mode:

The

contents

of

the

independently

accessible

memory

are

written

as

a

constant

in

the

formula.

STAT

mode:

Used

to

correct

the

mis-entry

of

data.

(x,

y)

3M

Memory-in-two

variable

data

designation

key

:

AER

mode:

Designates

the

instruction

for

storing

the

number

in

the

display

or

calculation

result

into

the

independently

accessible

memory.

-

COMP

mode:

Clear

the

contents

of

the

independently

accessible

memory

and

replaces

it

with

the

number

in

the

display

or

calculated

result.

To

clear

the

memory

depress

the

key

followed

by

(x,

vi:

Data

Me,

2ndF

Dai

CA

Ucn.

[2ndF]

|

CAT

the

[=

M|

key.

STAT

mode:

Used

to

distinguish

data

x

and

data

y

in

the

two-variable

statistical

calculation.

Ex.

|

When

data

x

is

6

and

data

»

is

3.

Key

operation

6

(x,

y)

3

Memory

plus/enter

data

key

AER

mode:

Designates

the

instruction

for

storing

the

number

displayed

or

a

calculated

result

to

the

independently

accessible

memory.

COMP

mode:

Used

to

add

the

number

displayed

or

a

calculated

result

to

the

contents

of

the

independent-

ly

accessible

memory.

:

AER

mode:

Designates

the

instruction

to

subtract

the

displayed

number

or

a

calculated

result

from

the

independently

accessible

memory.

COMP

mode:

Used

to

subtract

the

displayed

number

or

a

calculated

result

from

the

contents

of

the

independently

accessible

memory.

Note;

When

the

keys

is

depressed,

the

“‘M—”’

will

be

displayed.

STAT

mode:

Used

to

enter

data

in

one-variable

statistical

calculation

or

data

in

two

variable

statistical

calculation.

Clear/clear

ali

key

AER

mode:

Orders

the

cursor

to

be

positoned

at

Oth

step

of

algebraic

expression

reserve

area.

COMP

mode:

Clears

the

contents

of

the

calculation

registers.

The

contents

of

the

memory

and

stored

algebraic

formula

are

not affected.

Clears

the

error

condition.

STAT

mode:

Clears

the

contents

of

the

calculation

registers.

The

entry

data

for

the

statistical

calculation

is

retained.

And

clears

the

error

condition.

AER

mode:

Clears

all

of

information

stored

in

algebraic

expression

reserve

area.

COMP

mode:

Clears

the

contents

of

the

calculation

registers.

The

contents

of

the

memory

and

stored

algebraic

formula

are

not

affected.

STAT-mode:

Clears

the

entry

data

or

calculated

result

of

the

statistical

calculation.

The

stored

algebraic

formulas

are

retained.

Cursor

step-down

and

delete

key

Makes

the

cursor

go

down

by

one

step.

:

Deletes

the

symbol

(instruction)

stored

in

the

step

indicated

by

the

cursor.

(The

cursor

does

not

move.)

Cursor

step-up

and

insert

key

Makes

the

cursor

go

up

by

one

step.

:

Provides

a

blank

necessary

for

insertion

of

an

instruction

in

the

step

indicated

b

cursor.

Pushing

the

[2ndF]

and

keys

in

this

sequence

shifts

to

the

right

the

contents

step

indicated

by

the

cursor

and

the

subsequent.

In

the

blank

step

appears

the

insert

es

bend

Ex.

Key

operation

Display

Remarks

at

3x

4

3:

Blinking

24+

3x4

‘__:

Blinking

Play

back

and

variable

designation

key

Displays

an

inputted

formula

(or

number)

in

sequence,

divided

into

some

part:

of

which

can

be

displayed

at

a

time.

In

the

COMP-

or

STAT-mode,

this

key

reca!

formulas

that

was

performed

last.

:

In

the

AER

mode,

the

combination

specifies

a

variable

when

writing

a

formula

nec

for

performing

a

calculation

in

dialogic

form.

For

example,

the

key

operation

writes

“f(AB)=

designates

A

and

B

to

variables.

Compute

and

comma

key

-COMP

mode:

Executes

a

calculation

according

to

a

stored

formula

in

the

AER

mode.

-AER

mode:

Inserts

a

comma

between

formulas

to

distinguish

them

from

each

other

when

stort

or

more

formulas

in

the

divided

area.

[2ndF]

[m

|

AER

mode;

Used

to

put

on

end

to

each

formula

reserve

area.

Note:

Do

not

depress

[

m.

|keys

at

the

end

of

the

Sth

area.

Other

wise

an

error

will

take

place.

3.

DISASSEMBLY

PROCEDURE

|.

Remove

two

screws

on

the

bottom

cabinet.

_

Detach

the

bottom

cabinet

from

the

top

Bolom

more

cabinet

as

it

is

clasped

to

the

top

cabi-

net

at

the

points,

X,

Y,

and

Z.

.

Take

batteries

out

(3

pes).

t.

4e

Lo

.

Remove

nine

screws

at

the

points

a

™

1.

_

Detach

the

P.W.B.

from

the

top

cabinet

by

lifting

the

lower

part

of

the

P.W.B..

as

it

is

hooked

to

the

top

cabinet

at

the

upper

part

(LCD

side).

6.

As

soon

as

the

P.W.B.

was

removed,

such

as

the

key

rubber

and

filter

are

ready

to

remove.

7.

Now,

dismount

the

LCD

unit

by

releasing

the

hooks,

as

it is

hooked

to

the

P.W.B.

at

eight

locations

A

~

H.

8.

Then,

the

contact

rubbers

can

be

removed

when

the

LCD

unit

was

removed.

9.

As

the

LCD

is

held

to

the

angle

using

a

double-tack

adhesive

tape,

pour

in

a

small

amount

of

alcohol

into

the

contact

phase

between

the

LCD

and

the

angle.

This

will

make

separation

of

the

LCD

much

more

easier.

|

4.

BLOCK

DIAGRAM

a)

LCOD2401)

Segment

sgnal

Back

plate

ugnal

SC43328

tchip

1)

Decoder

{t

7a~24e4

RAM

§C43125

(Chip

2)

Decoder

(9a~

16e)

RAM

cays

(Chip

31

Decoder

¢(

la~

Be?

RAM

Algebras

ctpres

{a

ss

IM}

son

in

COMP

mode

Alecbrasc

expres

son

in

AER

mode

@

Key

Section

Key

signals

are

sent

to

the

LSI

as

key

signals

Ki,

~

Kijs.

while

key

strobe‘signals

are

sent

from

the

SC43151

as

key

strobe

signals

Sy

~

Si6.

e

Arithmetic

Logic

Section

All

the

arithmetic

operations

are

carried

out

in

the

SC43150

on

the

basis

of

key

signals

Ki;

~

Kijg.

However.

some

part

of

the

IK

RAM

within

the

display

chip

(SC43125)

is

used

for

the

memory

of

the

SC43150,

exchanging

the

data

corresponding

to

the

address

bus

(B,

~

Bs)

via

Dip,

~

Dog.

®

Display

Section

When

the

signal

Chip

Enable

is

in

high

state,

the

display

data

is

received

into

the

designated

address

(B,

~

Bg)

of

the

SC43125

via

the

lines

Dig,

~

Dioa.

Though

the

display

data

is

decoded

into

one

of

signals

la

~

24e

by

the

decoder

in

the

SC43125,

it

is

then

controlled

by

the

signal

HA

for

synchronizing

with

the

back

plate

signal.

If

the

signal

Disp

is

in

high

state

(out

of

arithmetic

operation),

the

decoded

signal

la

~

24e

is

sent

to

the

LCD

as

a

segment

signal

so

that

segments

are

lit

corresponding

to

the

back

plate

signal

H,

~

H,

directly

received

from

the

SC43151

.

7

5.

LS!

SIGNALS

e

$C43150

Pin

:

No.

Signal

Name

[IN/OUT

Oo

waonrnnant

Wh

—

OUT

IN/OUT

IN/OUT

IN/OUT

IN/OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

OUT

Description

Nonconnection

Nonconnection

Display

chip

2

enable

signal

Display

chip

|

enable

signal

Power

source

Power

source

For

internal

CG

For

internal

CG

LSi

checking

terminal

LSi

checking

terminal

LSi

reset

signal

Read

out/Write

in

control

input

Data

buss

Data

buss

Data

buss

Data

buss

Chip

address

Chip

address

Chip

address

Chip

address

Chip

address

Chip

address

Chip

address

Chip

address

Counter

signal

for

display

chip

Display

control

signal

Power

source

Power

source

Power

source

LCD

back

plate

signal

LCD

back

plate

signal

LCD

back

plate

signal

LCD

back

plate

signal

LCD

back

plate

signal

LCD

back

plate

signal

LCD

back

plate

signal

Power

source

for

display

Power

source

Key

strobe

signal

Key

strobe

signal

Key

strobe

signal

Key

strobe

signal

Key

strobe

signal

Key

strobe

signal

Key

strobe

signal