Sharp LC-37SD1E, Service Manual

Page: 66 / 182

LC-37SA1E/RU
5 – 1
LC-37SD1E
Service Manual
CHAPTER 5.
MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS
1. General ICs Information
Ref No. Name Part Code Description Drawing
Name
KD890FM (MAIN UNIT)
IC1905
HDMI-Receiver VHI-1Q The SiI9021 is a second generation panel Link Cinema receiver that is compat-
ible with the HDMI 1.1 (High Definition Multimedia interface) specification.
The SiI9021 is capable of receiving and outputting two channel digital audio at
up to 192KHz - an excellent solution for Digital TVs.
The feature of this IC is as follows.
1) Digital video interface supports video processors:
2) Analog RGB and YPbPr output: 10-bit DAC.
3) Digital audio interface supports high-end audio systems: M1
IC2701 4CH-
MULTIPLEXER VHITVHC153T-1Y This IC is a super high speed CMOS 4-channel multiplexer using the CMOS
technology and incorporates 2 circuits.
The input consists of 2 addresses A, B, 4 channel inputs C0-C3 and strobe
input G, and the signal of the channel selected by the address input sent as the
output Y.
The strobe input is used for prohibition of data output.
That means, when G input is “H” the output becomes “L” unconditionally.
In this model, this IC operates the switch of H/V-SYNC on each signal condi-
tion. M2
IC3002 VIDEO
PROCESSOR RH-IXB624WJN1Q The VCT 6wxyP family is based on functional blocks contained and approved
in existing products like VCT49xxl, VSP 94x5B, and DPS 94xxA.
That is, the following 6 major functions are included:
1) Audio Processing
2) Video Processing
3) Motion Adaptive Upconversion
4) Scaling, Display Processing and FPD
5) Unified memory for Audio, Video and Text Control, 3D Combfilter PC
Connectivity
6) Controlling, OSD and Text
M3
IC3003 Microcontroller RH-IXB664WJZZY This IC is based on LCD Driver and nano Watt Technology and is RISC micro-
processor to control peripheral functions necessary for the system configura-
tion.
In this equipment, the R/C LED on the AVC side and system on the display side
are controlled. M3
IC2301 RS232C
Transmitters/
Receivers VHIISL83220-1Y This IC is a line driver receiver in conformity with EIA/TIA-232-E (former RS-
232C) standard.
By connecting a PC, the system can be controlled externally. M5
IC1710 CPLD RH-IXB823WJZZQ This IC is a CPLD of Altera and use CMOS EEPROM cells to implement logic
functions with 64 Macrocells. This device controls ON/OFF power supply and
signals for inverter unit.
M6
IC1706 Stepdown
Converter VHIMP1410ES-1Y The MP1410 is a monolithic step down switch mode regulator with a built in
internal power MOSFET.
In this model, it is assumed 1.8V DC/DC-CONVERTER and is used. M6
IC3001 E2PROM VHIBR24L64F-1Y The BR24L64F is a 2-wire (I2C bus type) serial EEPROM that is electrically
programmable.
This IC saves adjustment values of the adjustment process mode, etc.
The data is given out by commands from the main microprocessor.
IC1901 E2PROM VHI24LC2BIN-1Y This IC is a 2-wire (I2C bus type) serial EEPROM this is electrically
programmable.
This EEPROM chip stores EDID data of the input for HDMI.
This data is controlled by the I2C signal.
IC2303 E2PROM VHIBR24C21F-1Y This IC is a 2-wire (I2C bus type) serial EEPROM this is electrically
programmable.
This EEPROM chip stores EDID data of the input for PC.
This data is controlled by the I2C signal.
IC1701 POWER RESET VHI-1Y Low voltage detector IC with adjustable output delay. Standard Detection Volt-
age = 3.9V.
IC1702 BU+3.3V VHIPQ20WZ11-1Y Low power-loss voltage regulators. Variable Output. Output current 1A.
Built-in overcurrent, overheat protection functions,ASO protection circuit.
IC1703 S+8V VHIPQ20WZ11-1Y Low power-loss voltage regulators. Variable Output. Output current 1A.
Built-in overcurrent, overheat protection functions,ASO protection circuit.