Dc-Ac Inverter; Lcd; Dc-Ac Inverter Specifications; Lcd Specifications - Acer 390 Series Service Manual

1.4.23

DC-AC Inverter

DC-AC inverter is used to generate very high AC voltage, then supply to LCD CCFT backlight use,
and is also responsible for the control of LCD brightness. Avoid touching the DC-AC inverter area
while the system unit is turned on.
Table 1-27

DC-AC Inverter Specifications

Item
Vendor & model name
Input voltage (V)
Input current (mA)
Output voltage (Vrms, no load)
Output voltage frequency (kHz)
Output current (mArms)
1.4.24

LCD

Table 1-28

LCD Specifications

Item
Vendor & model name
Mechanical Specifications
LCD display area
(diagonal, inch)
Display technology
Resolution
Supported colors
Optical Specification
Contrast ratio
2
Brightness (cd/m )
Brightness control
Contrast control
Electrical Specification
Supply voltage for LCD
display (V)
Supply voltage for LCD
backlight (Vrms)
System Introduction
Ambit T62.071.C.00
6.8(in.)
1000 (min.)
40 (min.)
1.0~5.5 (min.)
HITACHI
LMG9980ZWCC-01
12.1
STN
SVGA (800x600)
--
35 (typ.)
70 (typ.)
keyboard hotkey
using keyboard
hotkey
3.3 or 5 (typ.)
650 (typ.)
Specification
-
1.5~6.1 (typ.)
Specification
TORiSAN
LM-JK53-22NFR-A
12.1
STN
VGA (800x600)
--
40 (typ.)
70 (typ.)
keyboard hotkey
using keyboard
hotkey
3.3 or 5 (typ.)
630 (typ.)
- 22(max.)
- 750 (max.)
- 1600 (max.)
- 65 (max.)
2.0~6.7 (max.)
HITACHI
TX31D21VC
12.1
TFT
SVGA (800x600)
262,144 colors
80 (typ.)
70 (typ.)
keyboard hotkey
none
3.0 ~ 3.6 (typ.)
595(typ.), 660(max)
1-21