The Casio CTK-3500 digital keyboard user manual provides safety precautions, setup instructions, and detailed operation guides for all functions.
This guide begins with safety precautions and power options, explaining how to use the included AC adaptor (AD‑E95100L) or six AA‑size batteries, and how to connect accessories such as a music stand or headphones. It also covers basic maintenance, cleaning, and environmental considerations.
The manual then details keyboard operation, including the 10‑key pad, Function button settings, metronome, virtual hall, auto‑accompaniment, and MIDI connectivity. It provides step‑by‑step instructions for playing demo songs, using the Step Up Lesson, adjusting tone, volume, and other parameters, as well as troubleshooting tips and a full specifications list.
| Power Supply | AC adaptor AD‑E95100L or 6 AA batteries |
|---|---|
| Battery Type | AA‑size batteries (6 pcs) |
| DC Voltage | 9.5 V DC terminal |
| Auto Power‑Off | Off; 30 min auto‑off available |
| LCD Contrast | 1 – 12 (higher = darker) |
| Tuning Range | 415.5 – 465.9 Hz (default 440 Hz) |
| Pitch Bend Range | 0 – 12 (1 octave) |
| Reverb Level | 0 – 10 (higher = longer reverb) |
Press the 1P (Power) button; the display will light up.
Plug headphones into the PHONES/OUTPUT jack and lower the volume before use.
Use the 2VOLUME slider or the [+]/[–] keys to change the volume level.