EL-1801C is a calculator with an electronic printer from Casio.
This manual introduces the Sharp EL-1801C electronic printing calculator, describing its operating controls, paper and ink roller handling, battery management, and optional AC adaptor use. It also includes calculation examples, tax rate functions, and error troubleshooting.
Key sections cover operating controls, paper roll replacement, ink roller replacement, battery replacement, AC adaptor connection, specifications, and calculation examples, helping users maintain reliable performance and avoid common issues.
| Battery type | Heavy-duty manganese AA (or R6) x4 |
|---|---|
| Ink roller (black) | EA-781R-BK |
| Ink roller (red) | EA-781R-RD |
| AC adaptor model | EA-28A |
| Counter capacity | 3 digits (up to 999) |
Insert the leading edge of the paper roll into the opening, turn the power on, feed the paper, lift the metal paper holder, and insert the roll.
Turn the power switch OFF, remove the printer cover, take out the ink roller by turning it counter‑clockwise, install the correct color roller, and replace the cover.
Set the power switch to OFF, slide off the battery cover, replace the four AA (or R6) batteries ensuring correct polarity, and close the cover.
Turn the calculator off, connect the AC adaptor model EA‑28A, and the unit will automatically switch from battery to AC power.