This document provides information on precautions to be taken when using the product, including using the correct adapter, avoiding improper power supply, using recommended accessories, and being aware of the potential impact of noise on hearing.
This document serves as the official user manual for the Yamaha PSR-275 and PSR-273 portable keyboards. It provides essential safety warnings regarding power supply usage, battery installation, and environmental hazards to ensure safe operation of the instrument. The manual emphasizes using only the specified power adapter (PA-3C or PA-3B) and avoiding exposure to moisture or extreme temperatures.
The average lifespan of this type of battery is approximately five years.