BenQ Q7T3-FP737S Service Manual page 96

Q7T3(AUO Panel) LCD Monitor Service Guide
I. Introduction:
The Q7T3-FP767 is a 17" SXGA (1280x1024) , 262 K colors(R, G, B 6-bit data) TFT LCD
monitor with multi-media function. It's an analog interface LCD monitor with a 15 pins D-sub signal
cable and it's compliant with VESA specification to offer a smart power management and power saving
function. It also offers OSD menu for users to control the adjustable items and get some information
about this monitor, and the best function is to offer users an easy method to set all adjustable items
well just by pressing one key, we called it "Auto key" which can auto adjusting all
controlled items. Q7T3-FP767 also offer DDC2 function to meet VESA standard.
II. Block diagram
The Q7T3-FP767S consists of a head and a stand (base). The head consists of a LCD module
with 4 lamps, a power board (include AC/DC, DC/DC and inverter board), a control board and interface
BD. The block diagram is shown as below.
III. Circuit operation theory:
A.) HEAD:
A-1.) Interface board diagram:
TFT-LCD module with 4 CCFL(backlight)
To
backlight
Inverter
AC-DC
PW BD
board
board
AC
AC Socket
socket
AC input
Circuit Operation Theory
LVDS
Interface board
LVDS Xmtr x 2
Power sequence
circuit
gm2120
EEPROM
MCU
Flash ROM
DDC IC D-sub
connector
Control board
Analog RGB signals
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