Sharp EL-5100S User manual

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
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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
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tere
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5.05
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SHARP CORPORATION
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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