Battery Replacement; Specifications; Automatic Power Off Function - Sharp WriteView EL-W531 Operation Manual

Error codes and error types
ERROR 01: Syntax error
• An attempt was made to perform an invalid operation.
Ex. 2 + & 5 =
ERROR 02: Calculation error
• The absolute value of an intermediate or fi nal calculation
result equals or exceeds 10
• An attempt was made to divide by zero (or an intermediate
calculation resulted in zero).
• The calculation ranges were exceeded while performing
calculations.
ERROR 03: Nesting error
• The available number of buffers was exceeded. (There are
10 buffers for numeric values and 64 buffers for calculation
instructions).
ERROR 04: Data over
• Data items exceeded 100 in STAT mode.
Alert Messages
Cannot delete!
• The selected item cannot be deleted by pressing N or
@ y in the WriteView editor.
Ex. * 5 r A l N
In this example, delete the exponent before attempting to
delete the parentheses.
Cannot call!
• The function or operation stored in defi nable memory (D1 to
D4) cannot be called.
Ex. An attempt was made to recall a statistical variable from
within NORMAL mode.
Buffer full!
• The equation (including any calculation ending instructions)
exceeded its maximum input buffer (159 characters in the
WriteView editor or 161 characters in the Line editor). An
equation may not exceed its maximum input buffer.
Calculation Ranges
• Within the ranges specifi ed, this calculator is accurate to
±
1 of the 10th digit of the mantissa. However, a calculation
error increases in continuous calculations due to
accumulation of each calculation error. (This is the same
x x r, n!, e
y x
for , , ln, etc., where continuous calculations
are performed internally.)
Additionally, a calculation error will accumulate and
become larger in the vicinity of infl ection points and
singular points of functions.
• Calculation ranges
± ±
−
10 99 to 9.999999999
If the absolute value of an entry or a fi nal or intermediate
result of a calculation is less than 10
considered to be 0 in calculations and in the display.
Display of results using r
Calculation results may be displayed using r when all of the
following conditions are met:
• When intermediate and fi nal calculation results are displayed
in the following form:
a P b c P d
± ±
⎯ ⎯
e
f
• When each coeffi cient falls into the following ranges:
≤ < < <
1 a 100; 1 b 1,000; 0
≤ < ≤ <
1 d 1,000; 1 e 100; 1
• When the number of terms in the intermediate and fi nal
calculation results is one or two.
Note: The result of two fractional terms that include r will be
reduced to a common denominator.

BATTERY REPLACEMENT

Notes on Battery Replacement
Improper handling of batteries can cause electrolyte leakage or
explosion. Be sure to observe the following handling rules:
• Make sure the new battery is the correct type.
• When installing, orient the battery properly as indicated in the
calculator.
• The battery is factory-installed before shipment, and may
be exhausted before it reaches the service life stated in the
specifi cations.
Notes on erasure of memory contents
When the battery is replaced, the memory contents are
erased. Erasure can also occur if the calculator is defective
or when it is repaired. Make a note of all important memory
contents in case accidental erasure occurs.
When to Replace the Battery
EL-W531/W531H/W531HA/W535: If the display has poor
contrast even after adjusting the display contrast, the battery
requires replacement.
EL-W531G: If the display has poor contrast or nothing appears
on the display when j is pressed in dim lighting, even after
adjusting the display contrast, it is time to replace the battery.
Cautions
• Fluid from a leaking battery accidentally entering an eye could
result in serious injury. Should this occur, wash with clean
water and immediately consult a doctor.
• Should fl uid from a leaking battery come in contact with your
skin or clothes, immediately wash with clean water.
100
.
×
10 99 and 0.
−
99 , the value is
≤ <
c 100;
≤ <
f 100
• If the product is not to be used for some time, to avoid
damage to the unit from a leaking battery, remove it and
store in a safe place.
• Do not leave an exhausted battery inside the product.
• Keep batteries out of the reach of children.
• An exhausted battery left in the calculator may leak and
damage the calculator.
• Explosion risk may be caused by incorrect handling.
• Do not throw batteries into a fi re as they may explode.
Replacement Procedure
1. Turn the power off by pressing @ o.
2. Remove the two screws. (Fig. 1)
3. Slide the battery cover slightly and lift it to remove.
4. EL-W531/W531G/W535: Remove the used battery by
prying it out with a ball-point pen or other similar pointed
device. (Fig. 2)
EL-W531H/W531HA: Remove the used battery.
5. EL-W531/W531G/W535: Install one new battery. Make sure
+
the " " side is facing up.
EL-W531H/W531HA: Install one new battery. First insert the
−
18
" " side toward the spring. (Fig. 3)
6. Replace the cover and screws.
7. Press the RESET switch (on the back) with the tip of a
ball-point pen or similar object.
8. Adjust the display contrast. See "Adjusting the Display
Contrast".
• Make sure that the display appears as shown below. If the
display does not appear as shown, remove the battery,
reinstall it, and check the display once again.
Fig. 1
19

Automatic Power Off Function

This calculator will turn itself off to save battery power if no
key is pressed for approximately 10 minutes.

SPECIFICATIONS

Calculation features: Scientifi c calculations, statistical
Drill features:
Display:
Display of calculation results:
Internal calculations: Mantissas of up to 14 digits
Pending operations:
Power source:
Power consumption:
Operating time:
(varies according to
use and other factors)
Operating temperature: 0°C–40°C (32°F–104°F)
External dimensions: 79.6 mm (W)
Weight:
Accessories:
FOR MORE INFORMATION ABOUT SCIENTIFIC CALCULATORS
Visit our Web site.
http://sharp-world.com/calculator/
Fig. 2 Fig. 3
calculations, etc.
Math Drill and Multiplication Table
×
96 32 dot matrix liquid crystal display
Mantissa: 10 digits
Exponent: 2 digits
64 calculations 10 numeric values
EL-W531/W535
1.5 V ... — (DC): Alkaline battery (LR44 or
×
equivalent) 1
EL-W531G
Built-in solar cells
1.5 V ... — (DC): Backup battery
(Alkaline battery (LR44 or equivalent)
EL-W531H/W531HA
1.5 V ... — (DC): Heavy duty manganese
battery (size AAA or R03)
EL-W531/W531H/W531HA/W535
0.00011 W
EL-W531/W535
Approx. 3,000 hours when continuously
displaying 55555. at 25°C (77°F)
EL-W531G
Approx. 3,000 hours when continuously
displaying 55555. at 25°C (77°F), using
the alkaline battery only
EL-W531H/W531HA
Approx. 17,000 hours when continuously
displaying 55555. at 25°C (77°F)
×
161.5 mm (D)
15.5 mm (H)
×
3-1/8" (W) 6-11/32" (D)
EL-W531/W535
Approx. 100 g (0.22 lb) (including battery)
EL-W531G
Approx. 102 g (0.23 lb) (including battery)
EL-W531H/W531HA
Approx. 107 g (0.24 lb) (including battery)
×
Battery 1 (installed), operation
manual, and hard case
×
1)
×
1
×
×
5/8" (H)