Sharp LC-37P55E (serv.man12) Service Manual ▷ View online
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.
46
LC-26GA5E
LC-32GA5E
LC-26P55E
LC-32P55E
LC-37P55E
2. Detailed ICs Information
SiI 9021
SiI-DS-0117
Pin Diagram
144-Pin
TQFP
SiI 9021
(Top View)
Figure 1. Pin Diagram
2.1. IC1905 (VHISII9021+-1Q)
2.1.1. Pinning
2.1.2. Block Diagram
SiI 9021
SiI-DS-0117
SiliconImage Confidential
For
Sharp
Internal use Only
Functional Description
SiI 9021
SiI 9021
PanelLink
TMDS
PanelLink
TMDS
Figure 3. Functional Block Diagram
SiI 9021
The SiI 9021 supports two HDMI input ports. Only one port may be active at any time.
