Casio Fx-991es Calculator User Manual

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Get Casio fx-570ES PLUS Calculator User's Guide. Get all Casio manuals! Slide the hard case onto the front of the calculator (fx-991ES.

For details about initialized settings, see “Configuring the Calculator

4. Initialize all modes and settings by performing the following operation:

Replacing the Battery

A low battery is indicated by a dim display, even if contrast is adjusted, or by

failure of figures to appear on the display immediately after you turn on the

calculator. If this happens, replace the battery with a new one.

Portable Document Format (PDF) documents can be read with Adobe Reader software.

Important: Removing the battery will cause all of the calculator’s memory

1. Press (OFF) to turn off the calculator.

• To ensure that you do not accidentally turn on power while replacing the

battery, slide the hard case onto the front of the calculator (fx-991ES

2. Remove the cover as shown in the illustration and replace the battery,

taking care that its plus (+) and minus (–) ends are facing correctly.

Screw Screw

3. Replace the cover.

4. Initialize the calculator: (CLR)(All)(Yes)

Specifications

fx-570ES PLUS: AAA-size battery R03 (UM-4)

fx-991ES PLUS: Built-in solar cell; button battery LR44 (GPA76)

Approximate Battery Life:

Casio Fx-991es Calculator User Manual Instructions

fx-570ES PLUS: 17,000 hours (continuous display of flashing cursor)

fx-991ES PLUS: 3 years (based on one hour of operation per day)

Operating Temperature: 0°C to 40°C (32°F to 104°F)

fx-570ES PLUS: 13.8 (H)

 (H) s3

 (W) s6

 (D)

s80 (W) s162 (D) mm