Samsung PS42D51SX/XEC Service Manual page 94

■ A name of main part of Logic Board and vocabulary.
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Item Name
LVDS Connector
①
Operating Status LED
②
I2C Connector
③
MICOM(ARM-PROCESSOR)
④
Y Connector
⑤
X Connector
⑥
CN2075(E-Adderss Buffer Connector)
⑦
CN2076(F-Adderss Buffer Connector)
⑧
Power Connector
⑨
ASIC CHIP
⑩
MICOM LOADING 5PIN CONNECTOR The connector to load the Micom drive program. The program is loaded by connecting to the GA-WRITER.
⑪
VTOGG
⑫
■ About Logic Board
The Logic Board consists of a Logic Main board, which processes the video signal input through LVDS and creates the address
driver output and XY drive signals, and a Buffer board, which buffers the output signal and outputs the signal to the Address Driver
IC (TCP IC).
Logic Board
Logic Main
E Buffer Board
Buffer Board
F Buffer Board
Samsung Electronics
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The connector to receive the RGB, H, V, DATAEN and DCLK signals that have been LVDS encoded through the
video board. At present, there are 2 LVDS, both internal and external, and only LVDS will be provided in the final
version of the board.
The LED that shows whether the Sync and Clock signal is properly supplied to the logic board (Normal Status:
Blinks at 0.8 second intervals)
The connector for the Key Scan board that checks and controls the 512K data.
512K including the Gamma Table, APC Table, drive waveform timing and other options is saved to internal flash
memory.
The connector to output the control signal for the Y drive board.
The connector to output the control signal for the X drive board.
The connector to output the address data and the control signal to the E-buffer board.
The connector to output the address data and the control signal to the F-buffer board.
The connector to receive power (5V, 3.3V) for the Logic board.
The main processor that generates and outputs the logic drive signal and the address data.
TP for V Sync Check
- Video Signal Processing (W/L, error diffusion, APC)
- Outputs the Address Driver Control and Data Signals to the Buffer board.
- Outputs the XY Drive Board Control Signal
Outputs data and control signals to the bottom left TCP IC.
Outputs data and control signals to the bottom right TCP IC.
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Explanation
Function
Circuit Description
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Remark
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