Sharp LC-40LE820E, Руководство по обслуживанию

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LC-40/46/52LE820E, LC-40/46LU820E
8 – 1
LC-40LE820E
Service Manual
CHAPTER 8.
MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS
REF NO Name Part Code Description
[MAIN UNIT]
IC8401 RH-iXC147WJQZQ Flash This IC is 512MB NAND flash memory.
This IC stores the software data that processes the system of TV such as the
graphic processing, the LCD controls, and backlights etc.
IC3302 RH-iXC951WJN1Q Main CPU This IC is Video Processor & MAIN CPU.
In this IC, the decode processing and the video signal processing are done.
Moreover, OSD is generated here and added to a picture signal.
IC2002 RH-iXC786WJQZQ
for service
(RH-iXC786WJNJQ) UCOM The monitor microprocessor is intended to communicate with the main CPU and
to operate the system.
It also controls power of the entire system.
IC3501/3502 RH-iXC754WJQZQ DDR This IC is 1GB DDR2 SDRAM.
This IC operates as a memory of IC3302 (Video Processor). ***
IC501 VHi24LC21AT-1Y
for service
(RH-iXD108WJQZS) 1K bit E2PROM This IC is a 1Kbit-2-wire (I2C bus type) serial EEPROM that can be pro-
grammed electrically. The EEPROM chip stores the EDID data of PC input.
This data is controlled through I2C signals.
IC8455 VHiR24064AS-1Y 64K bit E2PROM The BR24S64W is a 64Kbit-2-wire (I2C bus type) serial EEPROM that can be
programmed electrically.
This IC stores the menu data and the adjustment value data of adjustment pro-
cess mode etc.
The data is given out by commands from the main microprocessor.
IC506 VHiM3221EIP-1Y RS232C-DRIVER The MAX3221E is a single driver, single receiver RS-232 solution operating
from a single Vcc supply. The RS-232 pins provide IEC G1000-4-2 ESD Protec-
tion. The device meets the requirements of TIA/EIA-232-F and provides the
electrical interface between an asynchronous communication controler and the
serial-port connector. The charge pump and four small external capacitors allow
operation from a single 3V to 5.5V supply.
IC4405 VHiMT8295AE-1Q CI controler This is a control IC for PCMCIA cards. This controls information on IC cards
inserted into the PCMCIA card slot (SC4401) or information on software version
upgrade cards saved on flash memories to transfer the data to CPUs and mem-
ories.
IC2004 VHiR24002AS-1Y 2K bit E2PROM This is a 2Kbit-2-wire (I2C bus type) serial EEPROM that can be programmed
electrically.
This IC stores the menu data and the adjustment value data of adjustment pro-
cess mode etc.
The data is given out by commands from the main microprocessor.
IC1504 VHi-1Q HDMI_Port _Processor The SiI9287 HDMI port processor is the second generation of HDMI devices
that support revision 1.3 of the HDMI specification. The main feature is as fol-
lows.
1) 4-input, 1-output HDMI port processor.
2) Integrated TMDS receiver and transmitter cores capable of receiving and
transmitting at 2.25Gbps.
3) Supports video resolutions up to 1080p, 60Hz, 12bit or 720p/1080i,
120Hz,12bit.
4) Receiver fully comply with DVI1.0, HDCP1.1 and HDMI1.3 specifications.
IC1106 VHiSTV0297E-1Q COFDM The STV0297E’s demodulator is a complete QAM (quadrature amplitude modu-
lation) demodulation and FEC (forward error correction) solution that performs
IF to transport
stream block processing of QAM signals. It is intended for the digital transmis-
sion of compressed television, sound, and data services over cable.
IC9501 VHiKSZ8041T-1Y Ethernet Bus Interface This IC is a single supply 10Base-T/100Base-TX Physical Layer Transceiver,
which provides MII/RMII/SMII interfaces to transmit and receive data.
IC2701 VHiYSS951VZ-1Y Sound processor This IC is the Sound processing LSI with built-in two DSP (MDSP/SDSP) and
FM (frequency modulation) oscillators.
This IC process sound signal and sent it to AMP for Speaker and Woofer
IC2702/2703 VHiYDA164QZ-1Y Audio-AMP This IC is digital audio power amplifier with digital audio interface.
The power-supply voltage is corresponded to A.8V~18V and the maximum out-
put is 20Wx2ch.