Acer VD.T25V7.001 manual System Board Major Chips, Keyboard, Battery, LCD Inverter, Rtc

System Board Major Chips

Item	Controller
System core logic	Intel 855PM
Super I/O controller	NS PC87391
Audio controller	Realtek ALC202A
Video controller	ATI Mobility Radeon 9000
Hard disk drive controller	Intel ICH4-M
Keyboard controller	NS 87591
RTC	Intel ICH4-M

Keyboard

Item	Specification
Keyboard controller	NS 87591
Keyboard vendor & model name	NS
Total number of keypads	84-/85/88-key
Windows 95 keys	Yes
Internal & external keyboard work	Yes
simultaneously

Battery

Item	Specification
Vendor & model name	Sinplo / Sanyo
Battery Type	Li-ion
Pack capacity	4400mAH
Cell voltage	3.7V/cell
Number of battery cell	8
Package configuration	4 cells in series, 2 series in parallel
Package voltage	14.8V

LCD Inverter

Item		Specification
Vendor & model name	Ambit T181064.00
Input voltage (V)	8 (min.)		20 (max.)
Input current (mA)			520 (max.)
Output voltage (Vrms, no		700 (typ.)
load)
Output voltage frequency	50 (min.)		61 (max.)
(kHz)
Output Current/Lamp	lout (min.)	3.0mA / 4.0mA	Vadj = 0V
	lout (max.)	5.5mA / 6.5mA	Vadj = 3.3V

NOTE: DC-AC inverter is used to generate very high AC voltage, the support to LCD CCFT backlight user, and is also responsible for the control of LCD brightness. Avoid touching the DC-AC inverter area while

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