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Interface board diagram:
(a) Circuit operation theory:
A basic operation theory for the analog interface board is to convert input signal into digital RGB.
Analog RGB signals are converted to digital signals through ADC circuit.
The microprocessor TSUMU5RHK receives video data and optimizes the image automatically.
TSUMU5RHK integrated ADC/PLL and an Ultra-Reliable DVI compliant digital receiver to deliver a
high-quality solution for mainstream dual input monitors.
(b) IC introduction:
1.)
DDC (Display Data Channel) function: We use DDC IC to support DDC/2B function. DDC data
is stored in 24C02(EEPROM). Those data related to LCD monitor specification. PC can read
them by “SDA” and “SCL” serial communication for I²C communication for DDC2B.
2.)
TSUMU5RHK IC: There are triple ADC(up to 165MHz ), LVDS transmitter ,Scaling, DIGITAL
VIDEO INPUT, and OSD functions in the TSUMU5RHK IC. Scaling IC is revolutionary scaling
engine, capable of expanding any source resolution to a highly uniform and sharp image,
combined with the critically proven integrated 8 bit triple-ADC and patented Rapid-lock digital
clock recovery system. It also support detect mode and DPMS control.
3.)
EEPROM: We use 24C32 to store all the adjustable data and user settings and use 24C02 to store
D-SUB EDID data.
A-2.) Control board introduction:
There are 8 keys for user's control which includes “Power” “i key”, “Menu/Enter”, “Exit”,
“Down” and “Up” keys. The following descriptions are the introduction of these keys.
(1) “Power” : For monitor power turn on/off
(2) " Menu/Enter " key: For enter sub-menus or select items.
(3)Up/Plus key: For up select and increase adjustment
(4)Down/Minus key: For down select and decrease adjustment
(5)" Exit " key: Back to main menus (auto save), or leave OSD
(6)" i - key ": For auto adjust vertical position, phase, horizontal position and pixel clock.
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Summary of Contents for T201WA
Page 25: ...4 Disassembly Assembly 4 1 Exploded View 25...
Page 26: ...4 2 Disassembly Assembly 26...
Page 27: ...27...
Page 30: ...30 b click select Parallel...
Page 31: ...c Modify Speed to 140000 Hz in Parallel item Click device finish 31...
Page 32: ...d Follow the follow steps in turn link I2C BD power cable signal cable 32...
Page 34: ...34...
Page 53: ...6 2 TROUBLE SHOOTING GUIDE 6 2 1 No Display or display is unstable Interface Board 53...
Page 54: ...6 2 2 BUTTON function Control Board 6 2 3 OSD function 54...
Page 55: ...6 2 4 No power troubleshooting 55...
Page 59: ...59...