Backlight Management; Back Lighting Behaviour With Electrical Connections - Mitsubishi Electric M4 Social User's Operation Manual

1.6

BACKLIGHT MANAGEMENT

The management of the backlight includes the LCD and the KEYBOARD.
If the mobile is charging, the backlight is Off, except during connection and disconnection phases where a 10-
second backlight switch on is made. This applies for all power sources except Full H/F.
In the case of a full F/H kit (H/F kit with power source), the backlight is switched on in a permanent mode,
whatever is the backlight setting status.
The backlight operates according to its Setting in the "Settings" Menu when the phone is used as a handheld, with
no power connection.

1.6.1 BACK LIGHTING BEHAVIOUR WITH ELECTRICAL CONNECTIONS

This paragraph describes the behavioural specification of the back lighting. The LCD and the keypad are
backlighted together in all situations. The back lighting management cases are:
Connection of the mobile to a Cigarette Light Adapter or AC/DC,
Connection of the mobile to a Hands Free (H/F) car-kit,
Connection to a Desk Top Charger (DTC),
Key press or network event with display and mobile connected to a H/F kit, CLA, AC/DC or DTC,
Key press or network event with display or , connected to a power source and mobile charging is
terminated,
Incoming Call.
The back lighting is managed via a phone Setting. Some connections enforce temporarily this Setting (connection
to a H/F kit enforces the Setting to "On"). The mobile can be charged in either "Switch Off" or "Switch On"
state.
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