This is a user manual for a multi-function printer, which includes instructions on how to use the product and how to solve common problems.
The manual begins with general information about the MFC‑790CW and MFC‑990CW models, including registration instructions (http://www.brother.com/registration/) and warranty notes. It then covers basic operations such as loading paper, scanning, faxing, copying, and using the PhotoCapture Center.
Further sections describe system settings (power‑saving mode, volume, backlight), safety functions, fax and telephone features, receipt modes, printing reports, and advanced copy functions. The document also includes troubleshooting tips and instructions for using optional accessories. This manual is written in Chinese.