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6.2 Circuit Operation Theory
I. Introduction:
V193 is a 19 inch and 24bits color TFT LCD monitor, which can support the resolution up to 1280 x 1024. It
has VGA input and compliant with VESA specification to offer a smart power management. The monitor has
DDC/CI function to make the monitor communicate with PC by Acer ADM DDC/CI software, and also it has
ACM function to let the monitor contrast ratio up to 10000:1. It also offers OSD Menu for users to control the
adjustable items and get some information about this monitor.
II. Block diagram
V193 consists of a main body and a stand (base). The main body contains a AUO/ LGD TFT LCD
module with 2 CCFL lamps, a power board (includes AC/DC
、
DC/DC
、
inverter and panel power
source), a control board and an interface board. The block diagram is shown as below.
Fig. Block diagram for V193 LCD monitor
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