This document is the user manual for Casio fx-82ES and fx-83ES calculators, providing information on the calculator's various functions and operating instructions.
This manual explains how to initialise the calculator, adjust display contrast, and safely operate the device. It includes detailed safety warnings for battery handling, environmental conditions, and mechanical stress.
Technical data such as power consumption, battery type, dimensions, and operating temperature are listed, and instructions for battery replacement and automatic power‑off are provided. This manual is written in German.
| Power consumption | 0.0002 W |
|---|---|
| Battery type | R03 (UM‑4) × 1 |
| Battery life | ≈ 17 000 hours (continuous cursor blink) |
| Operating temperature | 0 °C – 40 °C |
| Dimensions (H × W × D) | 13.7 mm × 80 mm × 161 mm |
| Weight | ≈ 110 g (including battery) |
Press the ON key (the "Gi" key) to power up the calculator.
Remove the rear cover screws, take out the old battery, insert a new R03 (UM‑4) battery with correct polarity, and re‑attach the cover.
Adjust the contrast using the designated contrast keys; if the display remains unreadable, replace the battery as low voltage may be the cause.