This document is a user manual and warranty certificate for the CTK551-CK-1 Ck electronic keyboard. The product has passed strict quality management and inspection. In case of malfunction during normal use, the user can enjoy free repairs within the specified range. The warranty period is one year. The warranty includes free repairs under normal use conditions. When requesting warranty service, the product, warranty certificate, and the store where the product was purchased or the designated repair station of Casio Electronics (Zhuhai) Co., Ltd. should be presented. The warranty does not cover malfunctions or damages caused by improper handling, misuse, fire, earthquake, water damage, lightning, rodent infestation, non-authorized repairs, modification, abnormal voltage, or battery depletion. The warranty is only valid within the territory of the People's Republic of China.
This manual begins with safety warnings, covering proper handling of the power transformer, battery use, and protection against fire, electric shock, and injury. It also explains how to clean, move, and store the keyboard safely.
The guide then describes the instrument’s features, including 100 tones, 100 rhythms, an automatic accompaniment function, a built‑in music library, and MIDI compatibility. Detailed instructions cover the LCD display, control buttons, chord book, and how to connect external devices such as headphones, speakers, and MIDI equipment. This manual is written in Chinese.
| Number of tones | 100 |
|---|---|
| Number of rhythms | 100 |
| Power supply terminal | 9 V DC |