Acer VD.A0307.001 manual Power Management, Power Saving Mode Phenomenon

AC Adapter

Item		Specification
Maximum input current (A,	2.25A	@ 90Vac
@90Vac, full load)	1.125A	@ 180Vac
Nominal frequency (Hz)	47 - 63
Frequency variation range (Hz)	47 - 63
Nominal voltages (Vrms)	100- 240
Inrush current	The maximum inrush current will be less than 50A and 100A when the adapter
	is connected to 115Vac(60Hz) and 230Vac(50Hz) respectively.
Efficiency	It should provide an efficiency of 83% minimum, when measured at maximum
	load under 115V(60Hz).
Output Ratings
DC output voltage	+18.8V~20.0V including the effects of line voltage variation, load current,
	ripple and noise
Noise + Ripple	400mvp-p (20MHz bandwidth) for resistor load
Output current	0~4A
Input rated voltage	100/240V
Input current	2.25A@90Vac for Delta/ 1.125@180Vac for Lite-On
Dynamic Output Characteristics
Turn-on delay time	3 sec.
Hold up time	4 ms min. (115 Vac, input full load)
Over Voltage Protection (OVP)	29 V
Short circuit protection	Output can be shorted without damage
Electrostatic discharge (ESD)	15kV (at air discharge)
	8kV (at contact discharge)
Dielectric Withstand Voltage
Primary to secondary	3000Vac (4242Vdc) 10mA for 1 second
Leakage current	100uA max (240Vac, 60Hz)
Regulatory Requirements	Internal filter meets;
	1. FCC class B requirements.
	2. VDE 243/1991 class B requirements.
	3. CISPR 22 Class B requirements.
	3. VCCI class II requirements.

Power Management

Power Saving Mode	Phenomenon
Standby Mode	The Sleep indicator lights up
Waiting time specified by the System Standby value
or the operating system elapses without any system
activity.
Or
When the computer is about to enter Hibernation
mode (e.g. during a battery-low condition), but the
Hibernation file is invalid or not present.
Hibernation Mode	All power shuts off
When customized functions for power management
are set to Hibernation and the corresponding action is
taken.
Display Standby Mode	The display shuts off
Keyboard, built-in touchpad, and an external PS/2
pointing device are idle for a specified period.

32 Chapter 1