The TCL NT21M81S is a color television with multiple picture modes, program navigation, calendar, world clock, and built‑in games. It supports various broadcast standards (PAL, NTSC, SECAM) and offers smart volume and picture adjustment functions.
The guide covers basic power on/off, automatic and manual channel search, picture and audio adjustments, game usage, and simple fault diagnosis. It also includes diagrams of the front panel, connection schematics, and a list of specifications. This manual is written in Chinese.
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The TV will automatically enter standby mode after ten minutes without a signal; check the antenna connection and signal source.