See also:

Screen adjustment
You can adjust the contrast, brightness, color and tone of the screen. You can also turn the display off, and change the screen to either day or night mode. Contrast, brightness, color and tone adj ...

Follow the correction procedures.
A buzzer sounds and a warning message is shown on the multi-informa- tion display. After taking the specified steps to correct the suspected problem, check that the warning message goes off. ...

Phonebook
INFORMATION Phonebook data is managed for every registered phone. When another phone is connecting, you can not read the registered data. “Phonebook” is accessed from the “Phonebook Settings ...