This manual explains the functions of the CASIO fx-9860G SD calculator.
This guide walks you through the initial setup of the fx-9860G SD, including battery installation, contrast adjustment, and basic navigation of the Main Menu. Detailed instructions cover turning the calculator on and off, using the various calculation modes, and accessing the Quick‑Start tutorial for common functions such as fractions, exponents, and graphing.
Later sections describe advanced features like SD‑card usage, power‑supply details, and troubleshooting with an error‑message table. Appendices list specifications, key indexes, and battery‑replacement procedures, helping you maintain the device over its lifespan.
| Calculation range | ±1 × 10⁻⁹⁹ to ±9.999999999 × 10⁹⁹ and 0 |
|---|---|
| Internal mantissa | 15‑digit |
| Program capacity | 63 000 bytes (max.) |
| Storage memory capacity | 1.5 MB (max.) |
| Power supply (main) | Four AAA‑size batteries (LR03/AM4) |
| Backup battery | One CR2032 lithium battery |
| Power consumption | 0.7 W |
| Battery life (main) | 300 h continuous display, 220 h continuous operation |
| Auto power‑off timer | 6 minutes or 60 minutes (user selectable) |
| Dimensions | 24 mm × 92.5 mm × 184.5 mm (H × W × D) |
| Ambient temperature range | 0 °C to 40 °C |
It uses four AAA‑size LR03 (AM4) batteries for main power and a CR2032 lithium battery for backup.