Battery Replacement

Batteries used

Type

Model

Quantity

Use

Lithium battery

CR2032

1

Unit operation

 

 

 

 

Lithium battery

CR2032

1

Backlighting

•Be sure to write down any important information stored in the memory before replacing the batteries.

Precautions

Since improper use of the batteries may cause leakage or explosion, strictly observe the following instructions:

•If fluid from a leaking battery accidentally gets into your eyes, it may result in serious injury. Should this occur, flush your eyes with clean water and consult a physician immediately.

•Should fluid from a leaking battery come into contact with your skin or clothes, immediately wash with clean water.

•If the Organizer will not be used for an extended period of time, to avoid damaging the Organizer remove batteries and store in a safe place.

•Do not leave exhausted batteries inside the Organizer.

•Do not use different types of batteries or partially used batteries.

•Insert the battery with its positive side (+) correctly orientated.

•Never throw batteries into a fire because they might explode.

•Keep batteries out of reach of children.

•When batteries become near exhaustion, remove them from the Organizer immediately to avoid battery leakage and corrosion

inside the Organizer.

Because the batteries in the Organizer were installed at the factory, they may become exhausted before the specified expiration time is reached.

Operating Battery Replacement

Battery replacement time

When “B” is displayed, immediately replace the operating battery with a new one. Follow the steps on page 29.

The operating battery holder is indicated as "OPERATION" under the battery holder cover.

If the battery level is low, the alarm may not sound, or similarly the Backlight may not function or remain on for less than the set interval. Continued use of the Organizer with low battery can alter or clear the memory contents. Memory contents may be lost if the battery is improperly replaced or if the following instructions are disregarded.

Caution:

•PC-LINK may not be available when the battery level is low.

•Expense Report (Summary Report) may not be available when the battery level is low.

•Under the low battery condition, new data entry and editing of existing data may not be performed in some modes. Also Clock and other settings may not be made.

Backlight Battery Replacement

When the Backlight cannot be turned on (except when “B” is displayed or the Organizer is in the PC Link mode), replace the backlight battery. Follow the steps on page 29.

The backlight battery holder is indicated as "BACKLIGHT" under the battery holder cover.

28

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Sharp EL-6990 operation manual Operating Battery Replacement Battery replacement time, Backlight Battery Replacement
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EL-6990 specifications

The Sharp EL-6990 is a versatile scientific calculator that is particularly well-suited for students, engineers, and professionals who require advanced calculations for their daily tasks. It is known for its robust features, user-friendly design, and innovative technology, making it an invaluable tool in a variety of settings.

One of the primary features of the Sharp EL-6990 is its large 2-line display that provides a clear view of calculations and results. The dual-line feature allows users to input equations and see the results simultaneously, enhancing the user experience and reducing errors during complex calculations. The display is also capable of showing fractions, equations, and various other functions in a format that is easy to understand.

The calculator is equipped with a comprehensive range of built-in functions, including more than 400 scientific and statistical functions. This includes everything from basic arithmetic operations to advanced statistical calculations, such as standard deviation and regression analysis. Furthermore, the EL-6990 supports complex numbers and can perform operations with them, which is particularly beneficial for higher-level mathematics and engineering courses.

In addition to its wide array of mathematical functions, the Sharp EL-6990 also features programmable capabilities. Users can store previously calculated formulas and equations for quick access, allowing for increased efficiency when working on repetitive tasks. This programming function makes it a popular choice among both students and professionals who need to streamline their workflow.

The EL-6990 incorporates Sharp’s proprietary WriteView technology, which enables users to view and edit expressions in a format that replicates traditional mathematical notation. This feature makes it easier for users to input complex formulas and understand the relationship between inputs and outputs.

Another notable characteristic of the Sharp EL-6990 is its portability. Designed with a compact body, the calculator is lightweight and easy to carry, making it a convenient companion for students on the go. Its durable construction and user-friendly interface further enhance its appeal, making it suitable for extensive daily use.

In conclusion, the Sharp EL-6990 is a powerful scientific calculator, offering a range of features and technologies tailored to meet the needs of students and professionals alike. Its clear display, extensive function library, programmability, and innovative WriteView technology set it apart as a reliable choice for anyone looking to enhance their computational efficiency. Whether for classroom use, fieldwork, or extensive calculations, the EL-6990 is engineered to deliver performance and reliability.
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