LC-37XD10E (serv.man5). Major IC Informations - Sharp TV Service Manual (repair manual). Page 2

Read Sharp LC-37XD10E (serv.man5) Service Manual online

LC-37XD10E/RU
5 – 2
IC1706
BU+1.8V
VHIMP1583++-1Y
DC to DC Converter. 3A Step down switch mode regulator with a built in internal Power 
Mosfet. 
Fault condition protection includes cycle-by-cycle current limiting and thermal shut-
down.
M8
IC1707
+3.3V
VHIPQ20WZ11-1Y
Low power-loss voltage regulators. Variable Output. Output current 1A. 
Built-in overcurrent, overheat protection functions,ASO protection circuit.
M8
IC1708
+1.8V
VHIMP1410ES-1Y
DC to DC Converter. 2A Step down switch mode regulator with a built in internal Power 
Mosfet.
Fault condition protection includes cycle-by-cycle current limiting and thermal shut-
down.
M8
IC1712
BU+2.5V
VHIMP1410ES-1Y
DC to DC Converter. 2A Step down switch mode regulator with a built in internal Power 
Mosfet. 
Fault condition protection includes cycle-by-cycle current limiting and thermal shut-
down.
M8
[AV SEC-
TION]
IC301  
IC302
Sound Amp
VHITDA8931T-1Y
The TDA8931 is a switching power stage for high efficiency class-D audio power ampli-
fier systems.
With this amplifier a compact 1x 20 W closed loop self-oscillating digital amplifier sys-
tem can be built. 
In this model, Audio amplifier is 15watt *2.
AV1
[POWER 
SUPPLY 
SECTION]
IC705
Switching 
Regulator
VHIMR4020++-1
This IC is a power supply for the switching regulator on the primary side. 
Overvoltage/overcurrent protection circuit, other protection circuits and control circuits 
are built in this IC. 
P1
IC704
Switching 
Regulator
VHIMR4040++-1
This IC is a power supply for the switching regulator on the primary side. 
Overvoltage/overcurrent protection circuit, other protection circuits and control circuits 
are built in this IC. 
P1
IC701
Power Factor 
Correction
VHIFA5501AN-1Y
FA5501AN is a control IC for a power factor correctoin converter using critical conduc-
tion mode. 
A CMOS process with high dielectric strength is employed to implement low power 
consumption.
This IC contains a correction circuit for light load to suppress rise of output voltage in 
light load mode snd an FB short detection circuit for stopping operatoin when the out-
put voltage detection section becomes faulty.
P1
[DIGITAL 
SECTION]
IC4001   
DTV-PRO-
CESSOR
RH-IXB680WJZZQ
This is a video/audio signal processing IC (Digital Processor) (STi5516) for digital 
tuner, which has been manufactured by STMicroelectronics, and incorporates a CPU. 
In this equipment, it implements GUI processing and video/audio processing for digital 
tuner, negotiation processing with CI-CARD, etc.
D1
IC4201   
64M-SDRAM
RH-IXB742WJZZQ
This IC is  64Mb SDRAM (static dynamic random-access memory )IC.
In this equipment, it is used for SMI memory (for image processing), and data is used 
for operation of the digital processor.                                                                                                                                                         
D2
IC4202   
64M-SDRAM
RH-IXB742WJZZQ
This IC is  64Mb SDRAM (static dynamic random-access memory )IC.
In this equipment, it is used for EMI memory (generally for CPU), and data is used for 
operation of the digital processor.
D2
IC4203  
16Mbit-
FLASH
RH-IXB921WJZZQ
This IC is a high performance CMOS super technology 16Mbit Flash Memory.
Start software (loader) for the CPU with a built-in digital processor and application soft-
ware have been written on this Flash Memory. 
The digital processor reads these softwares on start-up and implements them.
D2
IC4402/05    RATCH-3 
STATE
VHILVC573AP-1Y
This is a RATCH-3 STATE output IC. In this equipment, it is used to establish negotia-
tion communication with CI-CARD.
D3
IC4401   
BALANCE 
TRAN-
CEIVER
VHITCLCX245-2Y
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 CICARD. 
D3
IC4404   
Buffer/Line 
Driver
VHILCX244MT-1Y
This lC is fabricated with an advanced CMOS technology to achieve high speed opera-
tion while maintaining CMOS low power dissipation.
In this equipment, it is used to control negotiation communication with CI-CARD.
D3
IC4604    
3-OP-AMP
VHITSH73CPT-1Y
This IC is a Triple operational amplifiers featuring high video performances with large 
bandwidth, low distortion and excellent supply voltage rejection.  In this equipment, it is 
used to convert audio output signal of the digital processor to normal analog signal 
level and to buffer it.
D4
Page of 27
Display

Click on the first or last page to see other LC-37XD10E (serv.man5) service manuals if exist.