The Casio CTK-4400/WK-240/WK-245 user manual provides setup, operation, safety, and specifications for the digital keyboard.
This guide covers everything you need to get started with the Casio CTK-4400, WK-240, and WK-245 digital keyboards, including safety precautions, power options, and how to connect external devices. Detailed sections explain the 10‑key pad, function button operations, MIDI settings, and how to use built‑in sounds, sampling, and lesson features.
The manual also lists technical specifications such as key count, polyphony, built‑in tones, dimensions, and power consumption, and provides troubleshooting tips and warranty information. This manual is written in Spanish.
| Number of keys (CTK‑4400) | 61 standard size keys |
|---|---|
| Number of keys (WK‑240/WK‑245) | 76 standard size keys |
| Maximum polyphony | 48 notes |
| Built‑in tones | 600 |
| Sampling tones | Up to 8 |
| Power consumption | 7.7 W |
| Dimensions (CTK‑4400) | 94.8 × 35.0 × 10.3 cm |
| Weight (CTK‑4400) | Approximately 4.3 kg |
Turn off the keyboard, then hold down the SONG BANK button and the [1] key on the 10‑key pad while pressing 1; release when the “Pls wait” message appears.
The CTK‑4400 uses six AA‑size zinc‑carbon or alkaline batteries.
Approximately three hours of continuous operation on alkaline batteries.
The keyboard supports a maximum polyphony of 48 notes.