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22 Chapter 1
NOTE: DC-AC inverter is used to generate very high AC voltage, to support 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.
NOTE: There is an EEPROM in the inverter, which stores its supported LCD type and ID code. If you replace
a new inverter or replace the LCD with one of a different brand, use Inverter ID utility to update the ID
information.
DC-AC LCD Inverter
Item Specification
Vendor & Model Name Ambit T62.121.C.00 (12.1”)
Input Voltage (V) 7.3 (min.) None 22 (max.)
Input Current (mA) None None 1000 (max.)
Output Voltage (Vrms, no load) 1100 (min.) None 1400 (max.)
Output Voltage Frequency (KHz) 40 (min.) None 65 (max.)
Item Specification
Output Current
(mArms)
Min. Typ. Max. Remark
Output Current
(mArms)
6.3 7.0 7.7 Vadj : 3.2 V
Output Current
(mArms)
0.7 1.0 1.3 Vadj : 2.15 V
LCD
Item Specification
Vendor & model name 12.1" Sharp
LM121SS1T53
12.1” Hitachi
TX31D27VCICBB
Mechanical Specifications
LCD display area (diagonal, inch) 12.1 12.1
Display technology DSTN TFT
Resolution SVGA (800x600) SVGA (800x600)
Supports colors 16 M 16 M
Optical Specifications
Brightness control Keyboard hotkey Keyboard hotkey
Contrast control Keyboard hotkey None
Electrical Specifications
Supply voltage for LCD display (V) 3.3 (typ.) 3.3 (typ.)
Supply voltage for LCD backlight
(Vrms)
650 (typ) 650 (typ)
505-1.book Page 22 Thursday, November 4, 1999 4:36 PM