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Q7T4-FP71G LCD Monitor Service Guide
Circuit Operation Theory
1
Confidential
I. Introduction:
The Q7T4 is a 17” SXGA (1280x1024) , 16.2M colors(R, G, B 6-bit data+FRC data) TFT
LCD monitor. It’s an analog only interface LCD monitor with a 15 pins D-sub signal cable. 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. Q7T4 also
offer DDC2 function to meet VESA standard.
II.
Block diagram
The Q7T4 consists of a LCD module with 4 lamps, an power board, a control board ,and a
interface BD. The block diagram is shown as below.
III.
Circuit operation theory:
A-1.) Interface board diagram:
Control board
Interface board
LCD module with 4 lamps (backlight)
AC power in
D-Sub
Inverter
Power
Summary of Contents for Q7T4-FP71G
Page 9: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 9 Confidential Add FFC...
Page 10: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 10 Confidential Add Tape...
Page 14: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 14 Confidential Add one tape...
Page 16: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 16 Confidential Add one screw...
Page 17: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 17 Confidential Add 5 screw...
Page 19: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 19 Confidential Add 2 screw...
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Page 22: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 22 Confidential Add one tape...
Page 24: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 24 Confidential Add 4 screw...
Page 25: ...Q7T4 FP71G LCD Monitor Service Guide Alignment Procedure 25 Confidential Add 1 screw...
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