Sharp LC-30HV4U Service Manual page 40

LC-30HV4U
LC-30HV4D
∫ IC402 (TC90A69)
Adaptive infield 3-line digital comb filter supporting both NTSC and PAL.
This IC is a high-precision Y/C 1 chip incorporating a CNR circuit and performs YC separation of the sub video
signals received from IC1301.
∫ IC7003/IC404 (ML6428C1)
6.7 MHz low-pass filter.
∫ IC801/802 (TB1274AF)
IC for synchronous processing, luminance processing and chroma demodulation for color TV.
It receives main and sub luminance and chrominance signals from IC7001 (main) and IC402 (sub) and delivers
component signals.
∫ IC803 (CXA2101Q)
IC having a component input integrated with a high-performance image compensation circuit. Equipped with
circuits for processing baseband signals and RGB signals and a 4-channel video switch incorporating an H/V
synchronization signal processing circuit.
Input selection is done by INPUT-SEL (IIC BUS). YCbCr, Y, PbPr, GBR and their H/V synchronization signals
are inputted to input pins of each channel.
Multi-scan facility permits acceptance of a horizontal scan line frequency range of 15 kHz to 60 kHz.
∫ IC1901 (IXA392WJ)
FPGA for synchronous processing.
This IC selects synchronization signals and creates horizontal blanking signals.
∫ IC604 (TA1318AF)
IC for synchronous processing of TV component signals and measurement of frequency.
This IC incorporates an input signal frequency measurement feature and synchronous regeneration features.
It supports synchronous horizontal regeneration (15.75 kHz, 31.5 kHz, 33.75 kHz and 45 kHz) and synchronous
vertical regeneration (480I, 480P, 576I, 720P, 1080I, PAL 100 Hz, and NTSC 120 Hz).
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