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Q7C3 LCD Monitor Service Guide
Notes ：
(1) If the incoming display mode is not supported by this I/F board listed above, the picture can show up or
doesn't which is unpredictable, even the picture can display but probably isn't good or clear.
(2) Some signals from graphics board may not function properly.
(3) "P", "N" stands for "Positive", "Negative" polarity of incoming HSYNC/VSYNC(input timing).
(4) OSD will show "No Signal" message on the screen as below to indicate it while no display mode inputs.
(5) OSD will show "No Cable Connection" message on the screen as below to indicate it while no cable plug in
PC.
(6) OSD will show "Out of Range" message on the screen to indicate it while input display mode meet the
following condition
(a) The resolution is large than 1280x1024.
(b) The resolution is 1280x1024 but it frequency of vertical sync (Fv) is large than 77Hz.
(c) The frequency of horizontal sync (Fh) is large than 83KHz.
(d) The frequency of vertical sync (Fv) is large than 76Hz.
3.3 Number of display colors:
16M color numbers (With Dithering)
3.4 Adjustment function
Brightness
Contrast
Display position (Vertical , Horizontal)
Phase
Pixel clock
Color gain(Red, Green, Blue)
OSD position (Vertical , Horizontal)
Multi-language selection
OSD time
Volume
Recall function(Color Recall 、 Recall All)
3.5 Power Supply Requirements
3.5.1 Input Power Requirements
(1) Input Voltage Range
The unit shall meet all the operating requirements with an input voltage range of 90~264 Vac .
(2) Input Current
Maximum Input Current
(MAX) 2 Arms
(3) Frequency Range
The unit shall operate within a frequency range of 47Hz to 63Hz.
(4) Inrush Current
Power supply inrush current shall be less than the ratings of its critical components(including Power switch,
fuse, rectifiers and surge limiting device) for all conditions of line voltage.
(5) Regulator Efficiency
Measuring Range
90Vac 〜 264Vac
Engineering Specification
12
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