LG Electronics 3803 Difference between Up (F2)/Down (F4) keys and ↑/↓ keys

○7	MEMORY CARD slot
	Only used when the memory card contents are upgraded or updated.
○8	UP MENU key
	While displaying the setting screen, pressing this key enters the current data, then returns
	to the upper level by one.
	Holding down this key for at least one second enters the current setting, then returns to the
	top screen.
○9	Ten key (0 to 9 . -)
	Directly enter such numeric data as level, channel (frequency), CN. Press ENTER ○10
	key to enter data.
○10	ENTER key
	Enters numeric data set.
○11	Arrow keys { ↑(INC), ↓(DEC), ← (BACK), → (NEXT)}
	<↑, ↓keys>
	・Increments and decrements numeric data {i.e., level, channel (frequency), CN}.
	・Moves the arrow to the PID number to be selected in external input mode.
	・Increments and decrements the PID value between 0 and F when data is input in
	hexadecimal numbers.
		Difference between Up (F2)/Down (F4) keys and ↑/↓ keys
	F2, F4 keys		Increments and decrements the value by preset step size.
	↑, ↓ keys		Increments and decrements the value by preset step size.
			Holding down this key continuously changes the value.
	< ←, → keys>
	・Moves the arrow to the PID number to be selected in external input mode.
	・When entering PID value (hexadecimal numbers):
	pressing the → key enters the value at the current digit, then moves to the next digit.
	pressing the ← key cancels the value at the current digit, then returns to the previous
	digit.
○12	ALL CLEAR key
	Clears input data (i.e., numeric data, hexadecimal data).
○13	PRESET display
	Displays the last selected preset number.
○14	ADDRESS key
	Specifies the address to be stored or recalled.
○15	STORE key
	Stores the current setting in the address.

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