Mitsubishi Electronics FC810 manual Pin

￿￿￿￿￿￿￿ ￿$￿￿￿,		￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿	￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿
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The motherboard supports an ACPI-compliant standby switch for use with a soft-switch power supply. The action of the switch is under a combination of hardware and software control and is summarised in the table below. The motherboard will power off regardless of the state of software if the switch is held down for more than 4 seconds.

	￿￿￿￿￿	￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿
	Standby (soft power off)	Machine powers up and executes POST
￿￿,￿￿￿￿￿￿￿￿￿￿￿￿￿￿POST, DOS or APM￿￿￿￿￿￿￿￿￿O/S		Machine powers off into standby state

The ‘Wake on AC connect’ BIOS option and the state of the lithium cell determine the behaviour￿￿￿￿￿￿￿￿￿￿of the motherboard after an AC-disconnect￿￿￿￿￿￿￿￿. The table below￿￿describes￿￿￿￿￿￿￿￿￿this.

	CMOS RAM cleared. This is the state of a	Motherboard waits for standby switch
	new motherboard before assembly. This also	to be pressed.
	occurs after battery removal or failure.
	CMOS RAM not cleared and ‘Wake on AC	Motherboard fully powers up without
	connect’ was set to ‘Enabled’.	intervention.
	CMOS RAM not cleared and ‘Wake on AC	Motherboard waits for standby switch
￿￿￿￿￿￿￿￿￿￿!￿￿￿￿￿￿￿￿￿connect’ was set to ‘Disabled’. This is the		to be pressed.
	default state. Resume events will be lost if an
	AC power failure occurs.

Indication of the power state is via the power LED. When a standard LED is fitted, it is illuminated when power (main 5V) is on. Three states can be indicated by using a two-colour LED which is biased in the reverse direction to indicate a sleeping state. The table below assumes the use of a yellow/green bi-colour LED with the green anode connected to the LED+

pin￿￿￿￿￿.!￿￿￿"￿￿￿

Power off	Off
Normal operation	Green
Sleeping	Yellow

MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 22 OF 45