See also:

Safety symbol
You will find a circle with a slash through it in this manual. This symbol means “Do not”, “Do not do this”, or “Do not let this happen”, depending upon the context. ...

Fuses
Never replace a fuse with one having a higher rating or with material other than a fuse because serious damage or a fire could result. The fuses are designed to melt during an overload to prevent ...

MUTE button (models without Hands-free system)
Press the “” button if you wish to immediately cut the volume to zero. The audio display will show “MUTE”. If you press the button again, the original sound volume will return and “MUTE” t ...