LC-37SA1E (serv.man5). Major IC Informations - Sharp TV Service Manual (repair manual)

lc-37sa1e (serv.man5) service manual
Model
LC-37SA1E (serv.man5)
Pages
17
Size
5.28 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD / Major IC Informations
File
lc-37sa1e-sm5.pdf
Date

Read Sharp LC-37SA1E (serv.man5) Service Manual online

LC-37SA1E/RU/LC-37SV1E/RU
5 – 1
LC-37SA1E
Service Manual
 
CHAPTER 5. 
MAJOR IC INFORMATIONS
[1] MAJOR IC INFORMATIONS
1. General ICs Information
Ref No.
Name
Part Code
Description
Drawing 
Name
KD890FM (MAIN UNIT)
IC1905    
HDMI-Receiver
VHISII9023+-1Q
The SiI9023 is a second generation panel Link Cinema receiver that is compat-
ible with the HDMI 1.1 (High Definition Multimedia interface) specification.
The SiI9023 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:
M1
IC2701    
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 condi-
tion. 
M2
IC3002    
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
M3
IC3003    
Microcontroller
RH-IXB664WJZZY
This IC is based on LCD Driver and nano Watt Technology and is RISC micro-
processor to control peripheral functions necessary for the system configura-
tion.
In this equipment, the R/C LED on the AVC side and system on the display side 
are controlled.       
M3
IC2301    
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.
M5
IC1710    
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.
M6
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.
M3
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.
M1
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.
M5
IC1701
POWER RESET
VHIBU4239G+-1Y
Low voltage detector IC with adjustable output delay. Standard Detection Volt-
age = 3.9V.
M6
IC1702
BU+3.3V
VHIPQ20WZ11-1Y
Low power-loss voltage regulators. Variable Output. Output current 1A. 
Built-in overcurrent, overheat protection functions,ASO protection circuit.
M6
IC1703
S+8V
VHIPQ20WZ11-1Y
Low power-loss voltage regulators. Variable Output. Output current 1A. 
Built-in overcurrent, overheat protection functions,ASO protection circuit.
M6
LC-37SA1E/RU/LC-37SV1E/RU
5 – 2
Ref No.
Name
Part Code
Description
Drawing 
Name
IC1707
+3.3V
VHIPQ20WZ11-1Y
Low power-loss voltage regulators. Variable Output. Output current 1A. 
Built-in overcurrent, overheat protection functions,ASO protection circuit.
M6
IC1708
+1.8V
VHIMP1410ES-1Y
DC to DC Converter. 2A Step down switch mode regulator with a built in inter-
nal Power Mosfet. 
Fault condition protection includes cycle-by-cycle current limiting and thermal 
shutdown.
M6
IC1706
BU+1.8V
VHIMP1410ES-1Y
DC to DC Converter. 2A Step down switch mode regulator with a built in inter-
nal Power Mosfet. 
Fault condition protection includes cycle-by-cycle current limiting and thermal 
shutdown.
M6
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 ampli-
fier system can be built.
In this model, Audio amplifier is 10watt.
AV1
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.   
P1
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.   
P1
KD608FM (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 modula-
tion in cluding sound AM and FM processing.
TUNER
LC-37SA1E/RU/LC-37SV1E/RU
5 – 3
2. Detailed ICs Information
2.1. IC1905 (VHISII9023+-1Q)
2.1.1 Block Diagram
LC-37SA1E/RU/LC-37SV1E/RU
5 – 4
2.1.2 Pin Connections and short description
Pin No.
Pin Name
I/O
Pin Function
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
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. 5V Tolerant
32
DSCL0
I
DDC I2C Clock for Port 0. 5V Tolerant
31
DSDA0
Bi-Di
DDC I2C Data for Port 0. 5V Tolerant
30
DSCL1
I
DDC I2C Clock for Port 1. 5V Tolerant
29
DSDA1
Bi-Di
DDC I2C Data for Port 1. 5V Tolerant
28
CSCL
I
Configuration I2C Clock. 5V Tolerant
27
CSDA
Bi-Di
Configuration I2C Data. 5V Tolerant
103
SCDT
O
Indicates active video at HDMI input port
107
CLK48B
Bi-Di
Data Bus Latch Enable. 2
34
R0PWR5V
I
Port 0 Transmitter Detect. 5V Tolerant
33
R1PWR5V
I
Port 1 Transmitter Detect. 5V Tolerant
101
RSVDL
I
Reserved, must be tied Low
56
RSVD_A
Bi-Di
Reserved Pin, leave unconnected
6,7,8,10,11,
12,13,14,17,
18,19,20,81,
82,93,100
NC
No internal connection
87
MCLKIN
O
Audio Master Clock Input Reference
9
EVNODD
O
Indicates Even or Odd field for interlaced formats. Polarity programmable in register
40
R0XC+
I
TMDS input clock pair. HDMI Port 0
39
R0XC-
I
TMDS input clock pair. HDMI Port 0
44
R0X0+
I
TMDS input data pair. HDMI Port 0
43
R0X0-
I
TMDS input data pair. HDMI Port 0
48
R0X1+
I
TMDS input data pair. HDMI Port 0
47
R0X1-
I
TMDS input data pair. HDMI Port 0
52
R0X2+
I
TMDS input data pair. HDMI Port 0
Page of 17
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