Chapter 7. Major Ic Informations; Major Ic Informations - Sharp LC-32LE700E Service Manual

LC32LE700E
CHAPTER 7.

MAJOR IC INFORMATIONS

[1] MAJOR IC INFORMATIONS
1. DESCRIPTION OF MAJOR ICs
Ref No. Name
[MAIN UNIT]
IC8401 RH-iXC721WJQZQ
IC3302 RH-iXC773WJQZQ
IC2002 RH-iXC786WJQZQ
for service
(RH-iXC786WJN5Q)
IC3501/ RH-iXC790WJQZQ
3502
IC4404 VHiAOZ1320C-1Y
IC3301 VHiBD6538G+-1Y
IC501 VHiBR24C21F-1Y
for service
(RH-iXC697WJQZS)
IC2601/ VHiHC2G66DP-1Y
9611
IC9604/ VHiLV58072M-1Y
9606
IC9605/ VHiLV5893M+-1Y
9608
IC8455 VHiM24C64WN-1Y
IC506 VHiM3221EiP-1Y
IC9603 VHiMM3141YN-1Y
IC4405 VHiMT8295AE-1Q
IC1107 VHiPQ1LA505-1Y
IC9610 VHiPQ1LAX95-1Y
IC2004 VHiS24CS08J-1Y
IC2001 VHiS80927NM-1Y
LC-32/40/46LE700E/RU/S,LU700E/S,LX700E/RU,LC-52LE700E/RU/S
Part Code
Flash This IC is 1GB 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.
Main CPU This IC is Video Processor <FmSdata>[amp ] 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.
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.
DDR This IC is 512Mb DDR2 SDRAM.
This IC operates as a memory of IC3302 (Video Processor). ***
SMART LOAD SW The AOZ1320 is a P-channel high-side load switch with controlled slew rate.
AOZ1320-04 have a slew rate of 1ms.
USB high side SW BD6538G is single channel high side powers switch with low ON resistance Nch
power MOSFET.
Rich safety functions such as over current detection, Thermal shutdown (TSD),
under voltage lock out (UVLO) and soft start function which are required for the
power supply port protection are integrated into 1chip.
1K E2PROM This IC is a 1Kbit-2-wire (I2C bus type) serial EEPROM that can be programmed
electrically. The EEPROM chip stores the EDID data of PC input. This data is con-
trolled through I2C signals.
Bilateral Switch This IC is provides a dual analog switch. Each switch has two pins for input or out-
put and an active HIGH enable input.
1CH-SW-REG LV58072M is 3A 1ch step down switching regulator.
In this model, it generate D1.1V.
1CH-SW-REG LV5893M is 1.8A 1ch step down switching regulator.
In this model, it generate BU3.3V.
I2C bus type The BR24S64W is a 64Kbit-2-wire (I2C bus type) serial EEPROM that can be pro-
-64K E2PROM grammed electrically.
This IC stores the menu data and the adjustment value data of adjustment process
mode etc.
The data is given out by commands from the main microprocessor.
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 Protection. The
device meets the requirements of TIA/EIA-232-F and provides the electrical inter-
face between an asynchronous communication controller and the serial-port con-
nector. The charge pump and four small external capacitors allow operation from a
single 3V to 5.5V supply.
1CH-SW-REG The MM314 is CMOS general-purpose single-output voltage regulators with an on/
Reg 1.25V off control input, featuring low dropout voltage and low quiescent bias current. The
output current is possible up to 150mA or less. In this model, it generate CPU2.5V.
CI controller 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 memo-
ries.
Reg 5.0V The PQ1LA505 is CMOS general-purpose single-output voltage regulators with an
on/off control input, featuring low dropout voltage and low quiescent bias current.
The output current is possible up to 500mA or less. In this model, it generate DC-
POW.
Reg 9V The PQ1LAX95 is CMOS general-purpose single-output voltage regulators with an
on/off control input, featuring low dropout voltage and low quiescent bias current.
The output current is possible up to 500mA or less. In this model, it generate S+9V.
EEPROM The 24CS08 is a 8Kbit-2-wire (I2C bus type) serial EEPROM that can be pro-
grammed electrically.
This IC stores the menu data and the adjustment value data of adjustment process
mode etc.
The data is given out by commands from the main microprocessor.
Reset This IC is a highly precision voltage detector (2.7V) with built-in delay circuit.
In this model, It uses as RESET signal of IC3302.
Service Manual
Description
7 – 1