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Model
LC-32SD1E (serv.man3)
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18
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5.42 MB
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Service Manual
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Device
TV / LCD / Major IC Informations
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lc-32sd1e-sm3.pdf
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Sharp LC-32SD1E (serv.man3) Service Manual ▷ View online

LC-26SD1E/RU, LC-32SD1E/RU
7 – 1
LC-26SD1E
Service Manual
 
CHAPTER 7. 
MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS
1. General ICs Information
Ref No.
Name
Part Code
Description
KD890FM (MAIN UNIT)
IC1905    1
HDMI-Receiver
VHISII9021+-1Q
The SiI9021 is a second generation panel Link Cinema receiver that is compatible 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:
IC2701    2
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 condition. 
IC3002    3
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
IC3003    3
Microcontroller
RH-IXB664WJZZY
This IC is based on LCD Driver and nano Watt Technology and is RISC microprocessor to 
control peripheral functions necessary for the system configuration.
In this equipment, the R/C LED on the AVC side and system on the display side are con-
trolled.       
IC2301    5
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.
IC1710    6
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.
IC1706    6
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. 
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.
KD604FM (AV UNIT)
IC301
IC302
Sound Amp
VHITDA8931T-1Y
The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier 
systems.
With this amplifier a compact 1x 20 W closed loop self-oscillating digital amplifier system can 
be built.
In this model, Audio amplifier is 10watt.
KD605FM (POWER UNIT)
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.   
LC-26SD1E/RU, LC-32SD1E/RU
7 – 2
Ref No.
Name
Part Code
Description
IC704
Switching 
Regulator
VHIMR4030++-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.   
KD628FM (DIDGITAL UNIT)
IC4001   1
DTV-PROCES-
SOR
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 equip-
ment, it implements GUI processing and video/audio processing for digital tuner, negotiation 
processing with CI-CARD, etc.
IC4201   2
64M-SDRAM
RH-IXB472WJZZQ 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.   
IC4202   2
64M-SDRAM
RH-IXB472WJZZQ 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 opera-
tion of the digital processor.
IC4203   2
16Mbit-FLASH
RH-IXB681WJZZQ 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 software 
have been written on this Flash Memory.
The digital processor reads these softwares on start-up and implements them.
IC4402/05
RATCH3 
STATE
VHILVC573AP-1Y
This is a RATCH-3 STATE output IC. In this equipment, it is used to establish negotiation 
communication with CI-CARD.
IC4401   3
BALANCE 
TRANCEIVER
VHITCLCX245-2Y
This IC is a low voltage (3.3V) CMOS 8bit bidirectional transceiver. When setting the trans-
mission 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. 
IC4404   3
Buffer/Line 
Driver
VHILCX244MT-1Y
This lC is fabricated with an advanced CMOS technology to achieve high speed operation 
while maintaining CMOS low power dissipation. 
In this equipment, it is used to control negotiation communication with CI-CARD.
IC4604   4
3-OP-AMP
VHITSH73CPT
This IC is a Triple operational amplifiers featuring high video performances with large band-
width, 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.
KD609FM (D-TUNER UNIT)
IC201
IF-
Demodurator/
PLL
VHITDA9886+-1Y
The TDA9886 is an alignment-free multistandard (PAL, SECAM and NTSC) vision and 
sound IF signal PLL demodulator for positive and negative modulation in cluding sound AM 
and FM processing.
IC202
COFDM Demod 
IC
RH-IXB682WJZZQ 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 pro-
cessing. This IC is used for digital signal is fed to the digital processor to implement video/
audio decode processing. This IC is used for digital tuner only.
LC-26SD1E/RU, LC-32SD1E/RU
7 – 3
2. Detailed ICs Information
2.1. IC1905 (VHISII9021+-1Q)
2.1.1 Block Diagram
LC-26SD1E/RU, LC-32SD1E/RU
7 – 4
2.1.2 Pin Connections and short description
Pin No.
Pin Name
Type
Description
144
Q0
O
24-bit Output Pixel Data Bus.
143
Q1
O
24-bit Output Pixel Data Bus.
142
Q2
O
24-bit Output Pixel Data Bus.
141
Q3
O
24-bit Output Pixel Data Bus.
140
Q4
O
24-bit Output Pixel Data Bus.
137
Q5
O
24-bit Output Pixel Data Bus.
136
Q6
O
24-bit Output Pixel Data Bus.
133
Q7
O
24-bit Output Pixel Data Bus.
132
Q8
O
24-bit Output Pixel Data Bus.
131
Q9
O
24-bit Output Pixel Data Bus.
130
Q10
O
24-bit Output Pixel Data Bus.
129
Q11
O
24-bit Output Pixel Data Bus.
126
Q12
O
24-bit Output Pixel Data Bus.
125
Q13
O
24-bit Output Pixel Data Bus.
124
Q14
O
24-bit Output Pixel Data Bus.
123
Q15
O
24-bit Output Pixel Data Bus.
119
Q16
O
24-bit Output Pixel Data Bus.
118
Q17
O
24-bit Output Pixel Data Bus.
117
Q18
O
24-bit Output Pixel Data Bus.
116
Q19
O
24-bit Output Pixel Data Bus.
113
Q20
O
24-bit Output Pixel Data Bus.
112
Q21
O
24-bit Output Pixel Data Bus.
111
Q22
O
24-bit Output Pixel Data Bus.
110
Q23
O
24-bit Output Pixel Data Bus.
1
DE
O
Data enable.
2
HSYNC
O
Horizontal Sync Output control signal.
3
VSYNC
O
Vertical Sync Output control signal.
121
ODCK
O
Output Data Clock.
97
XTALIN
I
Crystal Clock Input.
96
XTALOUT
O
Crystal Clock Output.
88
MCLKOUT
O
Audio Master Clock Output.
87
MCLKIN
I
Audio Master Clock Input Reference.
86
SCK
O
I2S Serial Clock Output.
85
WS
O
I2S Word Select Output.
84
SDO
O
I2S Serial Data Output.
78
SPDIF
O
S/PDIF Audio Output.
77
MUTEOUT
O
Mute Audio Output.
104
INT
O
Interrupt Output.
102
RESET#
I
Reset Pin.Active LOW.
32
DSCLO
I
DDC I2C Clock for Port 0.
31
DSDAO
Bi-Di
DDC I2C Data for Port 0.
30
DSCL1
I
DDC I2C Clock for Port 1.
29
DSDA1
Bi-Di
DDC I2C Data for Port 1.
28
CSCL
I
Configuration I2C Clock.
27
CSDA
Bi-Di
Configuration I2C Data.
103
SCDT
O
Indicates active video at HDMI input port.
107
CLK48B
Bi-Di
Data Bus Latch Enable.
34
R0PWR5V
I
Port 0 Transmitter Detect.
33
R1PWR5V
I
Port 1 Transmitter Detect.
101
RSVDL
I
Reserved, must be tied LOW.
56
RSVD_A
Reserved Pin, leave unconnected.
93100
NC
No connect.
9
VREF
81,82,83
RSVD
O
14
AnRPr
O
Analog Video Red, Pr Output.
17
AnGY
O
Analog Video Green, Y Output.
20
AnBPb
O
Analog Video Blue, Pb Output.
11
COMP
Compensation. Provides compensation for the DAC's internal reference amplifier.
This pin should be connected through capacitors to DACVCC externally. 
These capacitors must be close to the pin as possible to avoid any noise pick-up.
10
RSET
Full Scale Adjust Resistor. A precision(1%)resistor connected between this pin and DACGND controls 
the magnitude of the full scale video signal/RESET may need to be ajusted for optimum gain.
This resistor must be as close to the pin as possible to avoid any noise pick-up.
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  • Here you can View online or download the Service Manual for the Sharp LC-32SD1E (serv.man3) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp LC-32SD1E (serv.man3) LCD. Information contained in Sharp LC-32SD1E (serv.man3) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.