LC-22AD1E (serv.man9). (9) Major IC function - Sharp TV Service Manual (repair manual). Page 2

11  IC4512 (IXA595)     QS-LCD-CONTROL

This is an LCD control IC for OS driving control that handles three-wire serial communication with the
MICON (IC3501).
It outputs a control signal for driving the liquid crystal panel.
Additionally, it has the function of a Quick Shoot-compliant OSD MIX (including control of the temperature
sensor).

12  IC4701 (A706WJ)     GRAY-LEVEL

This IC is a gradation reference power supply for a TFT liquid crystal display. It incorporates a gradation
output buffer amplifier (18 circuits), a COM buffer amplifier, and a REF amplifier (reference power supply).

13  IC3405 (NJU26150)     SOUND DSP

This IC is a 24-bit digital audio processor.
It downloads the program stored in the E2PROM IC3407 to the built-in PRAM and then executes it.
Audio data input and output are performed through an I2S serial host interface. There are three data inputs
and three data outputs.

14  IC3406 (NJU26106)     VIRTUAL DOLBY

This is the Virtual Dolby Surround IC, manufactured under license from Dolby Laboratories.
Audio data input and output are performed through an I2S serial host interface.

15  IC3203 (BH3543F)     HP-AMP

This is the dual headphone output amplifier IC.
It incorporates a POP noise prevention circuit and a thermal shut down circuit (150ÅãC) that are used when
turning the power on or off.

16  IC1623 (BA7046F)     SYNC-SEP

This IC incorporates a video synchronization separation circuit, a vertical synchronization separation circuit,
a horizontal oscillation circuit, and a phase-comparison circuit. When a video signal is input, a composite
synchronization signal (SYNC), a vertical synchronization signal (VD), and a horizontal synchronization
signal (HD) are produced.
This IC has both synchronous separation and AFC (Auto Frequency Control) functions.