LC-37P55E (serv.man12). MAJOR ICs INFORMATION — Sharp TV Service Manual (repair manual)

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LC-37P55E (serv.man12)
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Service Manual
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TV / LCD / MAJOR ICs INFORMATION
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lc-37p55e-sm12.pdf
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View Sharp LC-37P55E (serv.man12) Service Manual online

42
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
MAJOR ICs INFORMATION
1. General ICs Information
XD603WJ (MAIN UNIT):
· IC1905 :  HDMI RECEIVER 
   Part number:  
Sii9021
   Sharp code:  
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 sig-
nals at up to 192 kHz— an excellent solution for digital TVs.
This IC features the following.
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.
· IC1901 :  NVM OF HDMI (E-EDID)
   Part number:  
24LC2BIN
   Sharp code:  
VHI24LC2BIN-1Y
This IC is a 2-wire (I2C bus type) serial EEPROM this is electrically programmable. This EEPROM  chip stores the 
data structure used to carry configuration information for optimal use of a display (EDID data).
· IC2701 :  SYNC SELECT
   Part number:  
TVHC153T
   Sharp code:  
VHITVHC153T-1Y
This VHC153 is a high-speed Dual 4-input multiplexer with common select inputs and individual enable inputs for 
each section.
IC2704 :  HDMI & RGB SOUND MULTIPLEXER 
   Part number:  
CD4052BP
   Sharp code:  
VHICD4052BP-1Y
The TC74HC4052A is a high-speed CMOS analog multiplexer/demultiplexer backed by silicon gate CMOS technol-
ogy. The multiplexer function includes the selection and mixing of analog and digital signals. The chip consists of 4 
channels (x 2). A digital signal through the control terminal turns on the switch of a corresponding channel.
· IC3002 :  VIDEO PROCESSOR 
   Part number:  
VCTP
   Sharp code:  
RH-IXB624WJZZQ
The VCT 6wxyP family is dedicated to high-quality FPD and double-scan TV sets. The memory and program ROM 
are integrated in the IC. Modular design and deep submicron technology allow the integration of audio, video, tele-
text, OSD, and controller-related functionalities. They cover the whole range of flat-panel display TVs. The IC is 
based on proven functional blocks of existing products like VCT 49xxI, VSP 94x5B, and DPS 94xxB.
Each member of the IC family contains the entire audio, video, upconversion processing for 4:3 and 16:9 50/60 Hz 
progressive or 100/120 Hz interlaced stereo TV sets plus the control/data interface for flat-panel displays. The inte-
grated microcontroller is supported by a powerful OSD and graphics generator with integrated teletext acquisition.
The VCT 6wxyP family provides a front-end video processing unit with 4 CVBS-Y/C or component inputs for HDTV, 
EDTV, and SDTV. A VBI slicer, support of 1000 pages of teletext, and a 3-D comb filter for PAL and NTSC (in certain 
versions) are also available. The front-end unit further allows to process an SD and an HD source in parallel, thus 
enabling PiP and PaP functionality. Motion-adaptive de-interlacing, temporal noise reduction, and film mode detec-
tion are based on a unified memory technology. 
Post-scaling in the display processing block ensures the desired output format. Display processing is supported by 
an 8-bit 8051-compatible controller. By means of powerful alpha-blending, the graphics mixer composes the output 
image from following image layers: the video layer, the OSD layer and the pixel graphics layer.
The audio part consists of a multistandard sound IF demodulator and a baseband processor supporting all desired 
sound features in this range.
A connection for additional features, such as advanced motion compensation via -Micronas’ FRC 94xyA, is also 
provided.
43
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
· · IC3001 :  NVM 64Kb-E2PROM
   Part number:  
BR24L64F
   Sharp code:  
VHIBR24L64F-1Y
The BR24L64F is a 2-wire (I2C bus type) serial EEPROM that is electrically programmable. This IC stores the control 
data of system contents (last memory, for example) for the main microprocessor’s AV PWB and main PWB. The data 
is given out by commands from the main microprocessor.
·
 IC3003 :    PIC MICROCONTROLLER
   Part number:  
PIC16F913
   Sharp code:  
RH-IXB664WJZZY
28 Pin Flash-Based, 8 bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology.
This IC is controlled via I2C and works how expander of ports. This IC has led control and include A/D converter.
· IC2301 :  RS-232 TRANSMITTERS/RECEIVERS
   Part number:  
ISL83220
   Sharp code:  
VHIISL83220-1Y
The ISL83220E is a 3.0V to 5.5V powered RS-232 transmitter/receiver,+/-15kV ESD protected, minimum data rate 
250 kpbs.
· IC2303 :  NVM OF PC MODE (EDID)
 Part number:  
BR24C21F
   Sharp code:  
VHIBR24C21F-1Y
This IC is a 2-wire (I2C bus type) serial EEPROM this is electrically programmable. This EEPROM  chip stores the 
data structure used to carry configuration information for optimal use of a display (EDID data).
· IC1701:   POWER RESET OF +BU1.8V
   Part number:  
BU4239G
   Sharp code:  
VHIBU4239G+-1Y
Low voltage detector IC with adjustable output delay. Standard Detection Voltage = 3.9V
· IC1702:   BU+3.3V (VOLTAGE INPUT: BU+5V)
   Part number:  
PQ20WZ11
   Sharp code:  
VHIPQ20WZ11-1Y
Low power-loss voltage regulators. Variable Output. Output current 1A. Built-in overcurrent, overheat protection func-
tions, ASO protection circuit.
· IC1703:   S+8V (VOLTAGE INPUT: POW+12V)
   Part number:  
PQ20WZ11
   Sharp code:  
VHIPQ20WZ11-1Y
Low power-loss voltage regulators. Variable Output. Output current 1A. Built-in overcurrent, overheat protection func-
tions, ASO protection circuit.
· IC1707:   +3.3V (VOLTAGE INPUT: POW+5V)
   Part number:  
PQ20WZ11
   Sharp code:  
VHIPQ20WZ11-1Y
Low power-loss voltage regulators. Variable Output. Output current 1A. Built-in overcurrent, overheat protection func-
tions, ASO protection circuit.
· IC1708:   +1.8V (VOLTAGE INPUT: POW+5V)
   Part number:  
MP1410
   Sharp code:  
VHIMP1410ES-1Y
DC to DC Converter. 2A Step down switch mode regulator with a built in internal Power Mosfet. Fault condition pro-
tection includes cycle-by-cycle current limiting and thermal shutdown.
· IC1706:   BU+1.8V (VOLTAGE INPUT: BU+5V)
   Part number:  
MP1410
   Sharp code:  
VHIMP1410ES-1Y
DC to DC Converter. 2A Step down switch mode regulator with a built in internal Power Mosfet. Fault condition pro-
tection includes cycle-by-cycle current limiting and thermal shutdown.
44
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
· IC1710:   
   Part number:  
EPM3064
   Sharp code:  
RH-IXB716WJZZQ
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.
FD604WJ (AV UNIT):
· IC301 & IC302 :  AUDIO AMPLIFIER 
   Part number:  
TDA8931T
   Sharp code:  
VHITDA893T-1Y
The TDA8931 is a switching power stage for high efficiency class-D audio power amplifier systems. The IC has a high 
efficiency so that a heat sink is not required up to 20W (RMS).
· IC303 :  HEADPHONE AMPLIFIER 
   Part number:  
NJM4558M
   Sharp code:  
VHINJM4558M-1Y
The NJM4558 is a dual high-gain operational amplifier internally compensated and constructed on a single silicon 
chip using an advanced epitaxial process.
· IC1101 & IC1102:  VIDEO OUTPUT
   Part number:  
MM1506XN
   Sharp code:  
VHIMM1506XN-1Y
This IC extends the series of ICs for video/audio signal switching, with a 2-input 1-output single video switch with 75W 
driver and input bias (6dB gain).
· IC1201:   VIDEO INPUT 
   Part number:  
MM1507XN
   Sharp code:  
VHIMM1506XN-1Y
This IC extends the series of ICs for video/audio signal switching, with a 2-input 1-output single video switch with 
75W driver and input clamp.
FD605WJ (POWER SUPPLY UNIT):
· IC708:   
   Part number:  
NJM2904M
   Sharp code:  
VHINJM2904M-1Y
The IC consists of two independent, high gain internally frequency compensated operation amplifiers which were 
designed specifically to operate from single power supply.
· IC706 & IC707:  FEEDBACK CONTROL 
   Part number:  
TA76431R
   Sharp code:  
VHITA76431R-1Y
Adjustable precision shunt regulator for feedback control for driving an optocoupler in power supplies
· IC705:   POWER SUPPLY CONTROLLER FOR INVERTER
   Part number:  
MR4020
   Sharp code:  
VHIMR4020++-1
A high speed 900V IGBT makes ideal partial resonance operation which ensures high efficiency and low noise.
Very low power consumption at micro-loads (burst mode).
Start-up circuit eliminates the need for start-up resistor.
Excess current protection (ON period limitation, primary current limitation), excess voltage protection, and thermal 
shut-down function are incorporated.
·
 IC704:   POWER SUPPLY CONTROLLER FOR SIGNAL BOARD
   Part number:  
MR4020
   Sharp code:  
VHIMR4020++-1
A high speed 900V IGBT makes ideal partial resonance operation which ensures high efficiency and low noise.
45
 LC-26GA5E
 LC-32GA5E
  LC-26P55E
  LC-32P55E
  LC-37P55E
Very low power consumption at micro-loads (burst mode).
Start-up circuit eliminates the need for start-up resistor.
Excess current protection (ON period limitation, primary current limitation), excess voltage protection, and thermal 
shut-down function are incorporated.
FD607WJ (RC/LED UNIT):
·
 IC101 :  OPC
   Part number:  
TPS850
  Sharp code:  
VHITPS850++-1Y
The TPS850 is a linear-output photo-IC which incorporates a photodiode and current amp circuit in a single chip. This 
photo-IC is current output type, so can set up output voltage freely by arbitrary load resistance.
FD608WJ (TUNER UNIT):
· IC201 :  IF-Demodulator/PLL
   Part number:  
TDA9886
   Sharp code:  
VHITDA9886+-1Y
The  TDA9886  is  an  alignment-free  multi-standard  (PAL,  SECAM  and  NTSC)  vision  and  sound  IF  signal  PLL
demodulator for positive and negative modulation including sound AM and FM processing.
This IC features the following.
* Gain controlled wide-band vision intermediate frequency (VIF) amplifier (AC-coupled).
*  Multi-standard  true  synchronous  demodulation  with  active  carrier  regeneration  (very  linear  demodulation,
good intermodulation figures reduced harmonics, excellent pulse response).
* Gate phase detector for L/L accent standard.
*  Fully  integrated  VIF  Voltage  Controlled  Oscillator  (VCO),  alignment-free;  frequencies  switchable  for  all
negative modulated standards via I2C bus.
*  4MHz  reference  frequency  input  [signal  from  phase-locked  loop  (PLL)  tuning  system]  or  operating  as  crystal
oscillator.
*  VIF  Automatic  Gain  Control  (AGC)  detector  for  gain  control  operating  as  a  peak  sync  detector  for  negative
modulated signals and as a peak white detector for positive modulated signals.
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