Sony KE-42M1 / KE-MV42A1 / KE-MV42M1 / KE-P42M1 Service Manual ▷ View online
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1. L-Main
5. Y-Buffer (lower)
2. X-Main
6. E-Buffer
3. Y-Main
7. F-Buffer
4, Y-Buffer (upper)
8. G-Buffer
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3-2. Block
Diagrams
3-2-1. Block Diagrams for Drive Circuit Operations
<Drive Y Board>
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<Drive X Board>
<Drive Waveforms>
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3-2-2. Logic Circuit Block Diagram
3-3. Main Functions of Each Assembly
3-3-1. X-Main
board
The X-MAIN board generates a drive signal by switching the FET in synchronization
with the Logic Main board timing, and supplies the X electrode of the panel with the
drive signal through the connector. This board, connected to the panel’s X terminal,
has the following main functions.
1) Maintain voltage waveforms (including ERC).
2) Generate X Rising Ramp signal.
3) Maintain Ve bias between scan intervals.
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