LC-19D1EWH (serv.man6). Major IC Informations - Sharp TV Service Manual (repair manual). Page 2

LC-19D1E/S-BK/WH

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15

IC302

AUDIO CODEC

VHIWM8983++-1Y

The WM8983 is a low power, high quality stereo codec designed for 
portable multimedia applications.
The device integrates preamps for stereo differential mics, and includes 
drivers for speaker, headphone and differential or stereo line output. 
Advanced on-chip digital signal processing includes a 5-band
equaliser, a mixed signal Automatic Level Control for the microphone or 
line input through the ADC as well as a purely digital limiter function for 
record or playback.

M8

16

IC303

STEREO-
POWER-AMP

VHIBD5426MU-1Y

BD5426MUV is a stereo power amplifier  for the speaker drive. 
BD5426MUV has the following feature.  1) A high-quality audio mute is 
achieved by the soft switch technology.  2) Pop sound reduction at the 
time of power supply ON/OFF
3) Excessive output power limitation function.  4) Protection circuit built-
in which detects the direct-current voltage impression to SP

M8

17

IC304

2CH-MULTI-
PLEXER

VHI7WH157FK-1Y

TC7WH157 is the ultra high-speed multiplexer which used silicon gate 
technology. In this machine, it used to as ON/OFF-SW of the DAC-CLK 
signal of the I2S-DATA signal input from HDMI-IC to A-CODEC.

M8

18

IC701

1CH-REG

VHIBD9306AF-1Y

BD9306AF is 1CH Switching-regurator IC. 
In this model, it generates VLSB14.6V-regurator

M9

19

IC702

9V-REG

VHIPQ1LAX95

This IC generates B9V-regurator. 

M9

20

IC703

STEP-DOWN-
CONV

VHIMP1415C+-1Y

This IC generates B3.3V-regurator. 

M9

21

IC704

DC/DC-CONV *2

VHIMM3203B+-1Y

This IC generates VGL(-7V)/VGH(B28V)-regurator. 

M9

22

IC705

STEP-DOWN-
CONV

VHIMP2259++-1Y

This IC generates B1.5V-regurator. 

M9

[AV-TERMINAL UNIT]

1

IC501

AV-switch

VHIMM1492BJ-1Y

This IC is a 5-input 2-output AV switch controlled by the I2C BUS devel-
oped for use in television.
Because there are 2 outputs, it supports 2 screens and P-IN-P, and also 
supports an external output (monitor) pin.

AV

2

IC502

RS-232C-RECEI/
DRIV

VHIIM3221EIP

The MAX3221E is a single driver, single receiver RS-232 solution oper-
ating 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 commu-
nication controller and the serial-port connector. The charge pump and 
four small external capacitors allow operation from a single 3V to 5.5V 
supply. 

AV

3

IC504

SERIES-REG

VHIPQ050DNA-1Y

This IC generates B5V-regurator. 

AV

4

IC505

STEP-DOWN-
CONV

VHIMP1415C+-1Y

This IC generates B5.6V-regurator. 

AV

5

IC506

A-AMP  *2

VHINJM4565V-1Y

The NJM4565V integrated circuit is a high-gain, wide-bandwidth, dual 
low noise operational amplifier capable of driving 20V peak-to-peak into 
400

Ω load. 

In this model, it used to the amplifier of the audio L/R signal outputted 
from SCART1.

AV

6

IC507

RGB-SW

VHITL52055D-1Y

This  IC is a wide-bandwidth, 2-input, 1-output, 3-circuit video switch.   
In this equipment, it is used for switching the red green blue signal at 
SCART1 or digital broadcasting. 

AV

7

IC508

CVBS-SW

VHIMM1507XN-1Y

This IC is a 2-input 1-output single video switch with 75

Ω driver and 

input clamp.
In this equipment, it is used for  switching the CVBS signal at SCART1 
or digital broadcasting. 

AV

8

IC509

5V-REG

VHIPQ1X501M-1Y

This IC can be used for the power regulator circuit up to 0.15A in cur-
rent capacity with the direct current stabilizing supply element that has 
the ON/OFF function, the overcurrent protection function, and the over-
heating protection function of the output voltage. In this model, this IC 
generates B5V-regurator. 

AV

9

IC510

A-OUT-SW

VHITC4053BT-1Y

This IC is a high-speed triple 2-channel multiplexer.  In this equipment, 
it is used for select the DTV-AUDIO or MPX-AUDIO at the audio output 
signal of SCART1.

AV

10

IC202

DVB-T 
RECEIVER

RH-IXB964WJZZQ

This is a COFDM (Coded Orthogonal Frequency Division Multiplex) 
Demodulator IC. In this equipment, IF signal from the digital tuner is 
decoded to MPEG-2 signal, and it is digitally output. Output signal is fed 
to the digital processor to implement video/audio decode processing. 
This IC is used for digital signal is fed to the digital processor to imple-
ment video/audio decode processing. this IC is used only at digital 
broadcasting.

AV