Acer 721TX - TravelMate - PII 333 MHz, Service Manual, Page: 32 / 142

24 System Specifications
DC-AC inverter is used to generate very high AC voltage, to support the LCD
CCFT backlight user, and it is also responsible for the control of LCD
brightness. Avoid touching the DC-AC inverter area while the system unit is
turned on.
OCP (Over Current
Protection, A) 4~6 4~6 0.3~0.
4 - -
DC-AC Inverter
Item Specification
Vendor & model
name Ambit T62.086.C(12.1”) T622.087.C.00 (13.3” &14.1”)
Input voltage (V) 7.3 (min) - 22 (max)
Input current
(mA) - - 700 (max)
Output voltage
(Vrms, no load) 1300 (min) 155 1600 (max)
Output voltage
frequency (kHz) 40 (min) - 65 (max)
Output current
(mArms)
(T62.087.C.00) 0.7~5.9 (min) 1.0~6.5 (typ) 1.3~7.1 (max)
Output current
(mArms)
(T62.086.C.00) 0.6~5.4 (min) 1.0~6.0 (typ) 1.4~6.6 (max)
LCD
Item Specification
Vendor & model name LG LP141X3 Hitachi
TX34D62VC1CAC
Mechanical Specifications
LCD display area (diagonal,
inch) 14.1 13.3
Display technology TFT TFT
Resolution XGA
(1024x768)
XGA (1024x768)
Support colors 66i
Optical Specification
Contrast ration 150 (typ) 100 (typ)
Brightness (cd/m2) 130 (typ) 100 (typ)
DC-DC Converter
Item Specification
720.book Page 24 Saturday, March 6, 1999 10:00 AM