TU-X1E (serv.man8). Major IC Informations - Sharp TV Service Manual (repair manual). Page 2

TU-X1E/RU

7 – 2

14

IC2003

RH-IXC331WJQZ

MONITOR 
MICON 
M16C/64CEC

This IC is a 16-bit monitor microcomputer which carries M16C/60 series 
CPU core .  In this IC, detection of the STB key unit, control of the 
POWER signal, control of the FAN, control of the 5V, INV control, etc. are 
performed. Moreover, detection of the error about the power supply in 
MAIN board and power supply management of the MAIN part are per-
formed.

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15

IC2006

VHIBR24L08M-1Y

8K E2PROM

This IC is 8K bit serial E2PROM of 1024 word *8K bit configuration.
This IC saves the data of a portion with which IC2003 (MONITOR-
MICON) is processing.

 7/19

16

IC2007/08

VHILCX125FT-1Y

BUS BUFFER

This IC is 3 state buffer of the low voltage drive.
If 3 State control input (OE#) is made into "H", an output will be in a float-
ing (high impedance) state.

 7/19

17

IC9103

RH-
iXC121WJQZQ

CPLD

This IC performs the CPLD (Complex Programmable Logic Device).  A 
MUTE signal, a RESET signal, I/O processing, HDMI detection process-
ing, etc. are controlled by this IC.

 8/19

18

IC4405

VHILCX245FT-1Y

BUS TRAN-
CEIVER

 This IC is a low voltage (3.3V) CMOS 8bit bidirectional transceiver. When 
setting the transmission direction change input DIR to “H”, the A bus is 
switched to input and the B bus is changed to output; if the DIR is set to 
“L”, the B bus is switched to input and the A bus is changed to output. 
When setting the enable input OE to “H”, both A and B buses enter the 
high impedance state. In this equipment, it used to switch bus of the data 
from CI-CARD. 

 9/19

19

IC4404/08

VHILCX573FT-1Y

D_TYPE_LATC
H

This IC is CMOS 8 bit D type latch of the low voltage drive. 
This IC is composed by the independent latch in 8 bits controlled by latch 
enable signal (LE) and output enable (OE). 
If an enabling input (OE#) is made into "H", an output will be in a floating 
(high impedance) state.

 9/19

20

IC4409

VHILCX244FT-1Y

BUS BUFFER

This IC is CMOS 8 bit bus buffer of the low voltage drive. 
3 state control input is every 4 bits, is common, and either dual 4 bit com-
position or the single 8 bit composition can be used. 
If an enabling input (OE#) is made into "H", an output will be in a floating 
(high impedance) state.

 9/19

21

IC7001

RH-
IXC595WJQZQ

CI-Interface

This is a control IC for PCMCIA cards. This controls information on  IC 
cards inserted into the PCMCIA card slot (SC9101) or information on soft-
ware version upgrade cards saved on flash memories to transfer the data 
to CPUs and memories.

 11/19

22

IC2403

VHIIM3221EIP

RS-232C-
RECEI/DRIV

The MAX3221E is a single driver, single receiver RS-232 solution operat-
ing 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 interface between an asynchronous communication 
controller and the serial-port connector. 

 12/19

23

IC2402

VHILCX157FT-1Y

MULTIPLEXER

TC74LCX157FT is a CMOS multiplexer of a low-voltage (3.3V) drive.
In this model, It is used for a RS-232C signal changing whether it is in PC 
or a VIDEO signal state.

 12/19

24

IC1803
/1804

VHIL6726A++-1Y

PWM_CONTRO
LLER

L6726A is a single-phase step-down controller with integrated high-cur-
rent drivers that provides complete control logic, protections and refer-
ence voltage to realize in an easy and simple way general DC-DC 
converters by using a compact SO-8 package. In this model, D1.1V, and 
D1.0V which are used within MAIN board are generated.

 14/19

25

IC1807/05/08

VHILV5805M+-1Y

1CH-SW-REG

This IC is a 1CH step down switching regulator.
In this model, D3.3V, D5V and D1.8V which are used within MAIN board 
are generated.

 14/19

26

IC1806

VHIMP2367DE-1Y

STEPDOWN-
CONV

This IC is a monolithic non-synchronous step-down regulator. In this 
model, The 7.4V drive power supply for driving FAN  is generated. 

 14/19

27

IC1801

VHIBH33FB1G-1Y BU3.3V-REG

BHOOFB1WHFV/G series are high-performance LDO CMOS regulators 
with 150mA output that yields 

±1% of high-accuracy output voltage. In this 

model, BU3.3V which is used within MAIN board are generated.

 14/19

28

IC1910

VHILTC1154+-1Y

5V-REG

It is power supply IC for supplying the object 5V for the wireless transmis-
sion units of an option. It has short circuit detection and a thermal shut-
down function. .

 14/19

29

IC5001

RH-IXC446WJZZ

H264-
DECODER

This IC is digital-signal-processing IC at the time of satellite broadcasting 
reception.
Decoding processing, *** processing, etc. are performed by this IC.

 15/19

30

IC5201/02

RH-IXC187WJQZ

512M-SDRAM 
DDR400

This IC is 512Mb DDR2 SDRAM and VDD voltage is 2.5V 

± 0.2V.

In this model, This IC operates as a memory of IC5001 (H264-
DECODER)

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