Read Sharp LC-42SA1E (serv.man4) Service Manual online
LC-42SA1E/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.
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.
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.
nal Power Mosfet.
Fault condition protection includes cycle-by-cycle current limiting and thermal
shutdown.
M6
KD604FM (AV UNIT)
IC301
IC302
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.
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
IC705
Switching
Regulator
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.
Overvoltage/overcurrent protection circuit, other protection circuits and control
circuits are built in this IC.
P1
IC704
Switching
Regulator
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.
Overvoltage/overcurrent protection circuit, other protection circuits and control
circuits are built in this IC.
P1
KD608FM (TUNER UNIT)
IC201
IC201
IF-
Demodurator/
PLL
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.
vision and sound IF signal PLL demodulator for positive and negative modula-
tion in cluding sound AM and FM processing.
TUNER
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