Sharp LC-26GA5H Service Manual page 44

LC-26GA5H/M/X
∫ IC4602 (IXB227WJ)
The EEPROM is designed to store the 10-bit gamma correction and crosstalk correction data. When the set is
switched on, the data is read to IC4601 (IXB001WJ).
∫ IC4901 (IXB002WJ)
This is a QS (QuickShot) driver. QS drive is carried out for the input signal from the IC4601 (IXB001WJ)
picture quality correction chip. This signal is processed, according to the temperature parameter setting from
the monitor microprocessor, to feed out the LVDS signal. FIFO (IC4902: RH-IXA986WJZZQ) is also controlled
here for computing.
∫ IC4902 (IXA986WJ)
The 26M bit FIFO chip is a computing memory for the IC4901 (IXB002WJ) QS driver chip.
∫ IC4903 (IXB243WJ)
The EEPROM is designed to store the QS parameters. The data is read frame by frame to the QS driver.
∫ IC4501 (IXB003WJ)
The liquid crystal display panel controller receives the LVDS RGB signal from the QS driver and sends the
video signal (RSDS) to the LCD panel.
The control signals for the dimmer and CS circuits are also generated in this IC.
∫ IC4101 (IXA706WJ)
The TFT liquid crystal gradation reference power chip has an 18-line gradation output buffer amplifier, CMOS
buffer amplifier and reference voltage supply incorporated.
∫ IC2701 (MSP3450G)
The audio decoder IC serves to decode the S-IF signal and to select the input audio data.
∫ IC2714 (AK4586VQ)
The AK4586 is a 24-bit CODEC with built-in 2CH analog/digital converter and 6CH digital/analog converter.
(The CODEC is a device that converts analog signals to digital bit stream.)
This IC has a 96-kHz/24-bit-compatible DIR (Digital Audio Receiver) incorporated. Also the non-PCM data
stream, such as AC-3/MPEG, is automatically detected here.
The CODEC is an electronic circuit that converts audio analog data to digital codes and vice versa. In short, it
is a sort of AD and DA converters.
44