Sharp LC-70UD20KN (serv.man4) Service Manual ▷ View online
77
LC-60UD20
LC-70UD20
䊼
YES
NO
䊻
䊼
YES
䊼
NO
䊼
YES
䊼
YES
䊼
NO
Go to the section "FRC operation check."
䊼
YES
䊼
NO
䊼
YES
䊼
YES
䊼
YES
䊼
YES
䊼
NO
The program of IC9001 may
be damaged or be corrupted.
Replace IC9001 or rewrite the
ROM.
be damaged or be corrupted.
Replace IC9001 or rewrite the
ROM.
Check the operation of IC9401.
Are the 27MHz / 148MHz frequencies output from IC9401(CLK
Generator)
[7 / LVC_SS_CLK27MHz]
Generator)
[7 / LVC_SS_CLK27MHz]
Is VCC_3.3V applied to IC9401 ?
Check the operation of IC7702.
Does X9401 oscillate at 27 MHz?
CLKGEN operation check
78
LC-60UD20
LC-70UD20
3.4. Power / Back Light
䊼
NO
䊻
䊼YES
NO
䊻
䊼YES
NO
䊻
䊼YES
NO
䊻
䊼YES
NO
䊻
䊼YES
NO
䊻
䊼YES
NO
䊻
䊼
NO
䊻
䊼YES
NO
䊻
䊼YES
NO
䊻
䊼YES
NO
䊻
䊼YES
NO
䊻
䊼YES
No power (Central Icon is not lighting)
No startup (Central Icon is flashing)
Is the AC cord connector tightly connected to the set?
Reconnect the AC cord tightly and turn on the power
again.
again.
Are the wire harnesses and other cables properly
connected to the set?
connected to the set?
Reconnect the wire harnesses and other cables properly
to the set.
to the set.
Is power supplied from pins of 䛆PD䛇P3801 ?
[15 / BU+5V]
[15 / BU+5V]
Replace the power unit.
Is there the pins of 䛆PD䛇P3801 at “H”?
[14 / PS_ON]
[14 / PS_ON]
Check the signal line between PS_ON and
IC2002(UCOM)
IC2002(UCOM)
Is there the pins of 䛆PD䛇P3801 at “H”?
[13 / AC_DET]
[13 / AC_DET]
Check the power unit ,
and the signal line between AC_DET and
and the signal line between AC_DET and
Is power supplied from pins of 䛆PD䛇P3801 as specified?
[5~8 / UR+13V]
[5~8 / UR+13V]
Check the peripheral circuits.
Are the DC/DC converter outputs and the output
voltages along
voltages along
Check the DC/DC converters and the control lines.
Replace defective parts as required.
Replace defective parts as required.
No light (Back Light doesn't light)
Is the AC cord connector tightly connected to the set?
Reconnect the AC cord tightly and turn on the power
again.
again.
Is there the pins of 䛆PD䛇P3801 at “H”?
[24 / STB]
[24 / STB]
Check the power unit ,
and the signal line between STB and
and the signal line between STB and
Replace the power unit.
Are the wire harnesses and other cables properly
connected in the set?
connected in the set?
Reconnect the wire harnesses and other cables properly
in the set.
in the set.
Does Power starts up (central Icon LED ilights up) ?
Refer to “No power (central Icon LED failure to light up)
or no startup (central Icon LED failure is flashing)”
or no startup (central Icon LED failure is flashing)”
Is there the pins of 䛆PD䛇P3801 at “H”?
[16 / PNL_POW]
[16 / PNL_POW]
Check the power unit ,
and the signal line between PNL_POW and IC3301
(
and the signal line between PNL_POW and IC3301
(
Digital AV decode & Main CPU
) .
BU3.3V
(IC9607 etc.)
STB+3.3V
(IC9607 etc.)
D5V (IC9602
etc.)
D3.3V (IC9603
etc.)
D1.8V
(IC9608 etc.)
D1.5V
(IC9601 etc.)
D1.2V
(IC9601 etc.)
D2.5V
(IC9603 etc.)
DEMOD_1.1V
(IC9605 etc.)
D1V
(IC9602 etc.)
USB_5V
(IC9604 etc.)
1.2V
(IC3302 etc.)
CPU_ADAC3.3V (IC3303 etc.)
CII+5V
CII+5V
(IC1401 etc.)
ANT+5V
(IC1101 etc.)
HDMI4_PWR5V (IC1507 etc.)
5V of USB1
5V of USB1
(IC9502 etc.)
5V of USB2
(IC9504 etc.)
5V of USB3
(IC9505 etc.)
79
LC-60UD20
LC-70UD20
MAJOR ICs INFORMATION
[MAIN UNIT]
NO
REF NO
Part Code
Name
De䡏䠿䡎䡅䡌䡐䡅䡋䡊
1
IC2002
RH-IXD759WJN1Q
UCOM
The monitor microprocessor is intended to communicate with the main CPU and to operate the
system.
It also controls power of the entire system.
system.
It also controls power of the entire system.
2
IC3102
RH-IXD706WJQZQ
NAND Flash
䠰his IC 䡅䡏 8Gbit NAND flash memory .
This IC stores the software data that processes the system of TV such as the graphic
processing, the LCD controls, and backlights etc.
This IC stores the software data that processes the system of TV such as the graphic
processing, the LCD controls, and backlights etc.
3
IC3301
RH-IXD414WJN1Q
Digital AV decode
Main CPU
Main CPU
This IC is Video Processor & MAIN CPU.
In this IC, the decode processing and the video signal processing are done.
Moreover, OSD is generated here and added to a picture signal.
In this IC, the decode processing and the video signal processing are done.
Moreover, OSD is generated here and added to a picture signal.
4
IC3501,IC3502,IC3503,IC3504 RH-IXD682WJQZQ
DDR
䠰his IC 䡅䡏 2GB DDR3 SDRAM .
This IC operates as a memory of IC3301 (Digital AV decode & Main CPU).
This IC operates as a memory of IC3301 (Digital AV decode & Main CPU).
5
IC2501
VHISII9679+-1Q
HDMI/MHL bridge
and Receiver / HDCP2.2
and Receiver / HDCP2.2
This IC is HDMI/MHL1䠈2䠈3 receiver.
This is an advanced integrated High-definition (HD) solution which can receive the latest
HDMI䠈
MHL1 .x䠈M HL2 .x with HDCP1.4 encryption or HDMI䠈MHL3 with HDCP2.2 encryption inputs䠈
and support HDMI output with HDCP1.4 encryption.
This IC can support up to 4K x 2K Ultra HD video format.
This is an advanced integrated High-definition (HD) solution which can receive the latest
HDMI䠈
MHL1 .x䠈M HL2 .x with HDCP1.4 encryption or HDMI䠈MHL3 with HDCP2.2 encryption inputs䠈
and support HDMI output with HDCP1.4 encryption.
This IC can support up to 4K x 2K Ultra HD video format.
6
IC2601
VHIN8647781-1Q
HDMI transmitter-receiver
This IC is Transmitter-Receiver for High Definition Multimedia Interface(HDMI).
This IC supports 4K2K resolution, HDCP, Audio Return Channel(ARC) support
This IC supports 4K2K resolution, HDCP, Audio Return Channel(ARC) support
7
IC2701
VHIHDX412BD-1Y
HDMI Splitter
This IC is HDMI Splitter, supports up 3.4Gbps TMDS Serial Link Compliant with HDMI 1.4b
requirement
requirement
8
IC1102
RH-IXD591WJQZY
LNB supply and control
It is IC for amplifying the feeble electric wave sent from satellite broadcasting
on the level which can treat a decoder, and changing and processing signal
on the level which can treat a decoder, and changing and processing signal
9
IC1301
VHICXD2842E-1Y
Demodulator
This IC is a combined DVB-T2,T,C,S2 ,S demodulator.
10
IC1702
VHIYDA174QZ-1Y
Audio-AMP + DSP for SP
This IC is digital audio power amplifier which contained 2 cores of DSP and FM sound source.
The maximum output is 15Wx2ch.
The maximum output is 15Wx2ch.
11
IC1705
VHIYDA176DL-1Y
Audio-AMP for Woofer
This IC is digital audio power amplifier with digital audio interface.
The power-supply voltage is corresponded to 5V䡚18V and the maximum output is 15Wx2ch.
The power-supply voltage is corresponded to 5V䡚18V and the maximum output is 15Wx2ch.
12 IC9501
VHICY65632L-1Q
USB2.0 Hub controller
This IC is USB 2.0 Hub. Up to four downstream ports support.
13
IC9503
VHIRTS5176E-1Q
SD card controller
This IC is a XTAL free and an ultimate throughput USB 2.0 compliant card reader controller that
integrates USB 2.0 Transceiver, MCU, SIE, regulators and memory card access units into a
single chip.
integrates USB 2.0 Transceiver, MCU, SIE, regulators and memory card access units into a
single chip.
14 IC503㸪IC1502㸪IC1503㸪IC1
504㸪IC1505,IC2004
VHIM24C02RM-1Y
I2C bus EEPROM
(2k bit)
(2k bit)
This IC is 2-Kbit (256 bytes) serial I2C bus EEPROMs.
15 IC3101
VHIM24C64TP-1Y
I2C bus EEPROM
(64k bit)
(64k bit)
This IC is 64-Kbit (8k bytes) serial I2C bus EEPROMs.
16
IC2503
RH-IXD086WJZZY
Serial Flash Memory
(8Mbit)
(8Mbit)
This IC is Serial Flash Memory (8Mbit) providing a storage solution for systems with limited
space, pins and power.
space, pins and power.
17
IC630
VHIM3221EIP-1Y
RS232C-DRIVER
This is a single driver, single receiver RS-232 solution operating from a single Vcc supply. The
RS-232 pins provide IEC G1000-4-2 ESD Protection. The device meets the requirements of
TIA/EIA-232-F and provides the electrical interface between an asynchronous communication
controller and the serial-port connector. The charge pump and four small external capacitors
allow operation from a single 3V to 5.5V supply.
RS-232 pins provide IEC G1000-4-2 ESD Protection. The device meets the requirements of
TIA/EIA-232-F and provides the electrical interface between an asynchronous communication
controller and the serial-port connector. The charge pump and four small external capacitors
allow operation from a single 3V to 5.5V supply.
18 IC9601
VHIBD9580MU-1Y
DC/DC converter
This IC is a DC/DC converter which can change DC voltage.
FRC Unit
NO
REF NO
Part Code
Name
De䡏䠿䡎䡅䡌䡐䡅䡋䡊
1
IC7001㸪IC7002
VHITHCV216+-1Q
V-by-One®HS Receiver
This IC is V-by-One®HS Receiver, can support video data transmission between the host and
display.
This IC can transmit 39bit video data and 3bit control data via only a single differential cable at
an LVDS clock frequency from 20MHz to 100MHz.
This IC䠈which bas two bigh-speed data lanes䠈can transmit the video data up
1080p/10b/60Hz䠈1080p/12b/60Hz.
The maximum serial data rate is 3.75GbpȞlane
display.
This IC can transmit 39bit video data and 3bit control data via only a single differential cable at
an LVDS clock frequency from 20MHz to 100MHz.
This IC䠈which bas two bigh-speed data lanes䠈can transmit the video data up
1080p/10b/60Hz䠈1080p/12b/60Hz.
The maximum serial data rate is 3.75GbpȞlane
2
IC8501㸪IC8502
VHITHCV226+-1Q V-by-One®HS
Receiver
This IC is V-by-One®HS Receiver, can support video data transmission between the host and
display.
This IC can receive 32bit video data and 3bit control data via 4 differential pairs of V-by-
One®HS lanes.
This IC in TOFP package supports the video data transmission up to 1080p/10b/120Hz.
The maximum serial data rate is 3.4 Gbps/lane.
display.
This IC can receive 32bit video data and 3bit control data via 4 differential pairs of V-by-
One®HS lanes.
This IC in TOFP package supports the video data transmission up to 1080p/10b/120Hz.
The maximum serial data rate is 3.4 Gbps/lane.
3
IC7201
VHITHCV215+-1Q V-by-One®HS
Transmitter
This IC V-by-One®HS Transmitter, can support video data transmission between the host and
display.
This IC can transmit 39bit video data and 3bit control data via only a single differential cable at
an LVDS clock frequency from 20MHz to 100MHz.
This IC䠈which bas two bigh-speed data lanes䠈can transmit the video data up
1080p/10b/60Hz䠈1080p/12b/60Hz.
The maximum serial data rate is 3.75GbpȞlane
display.
This IC can transmit 39bit video data and 3bit control data via only a single differential cable at
an LVDS clock frequency from 20MHz to 100MHz.
This IC䠈which bas two bigh-speed data lanes䠈can transmit the video data up
1080p/10b/60Hz䠈1080p/12b/60Hz.
The maximum serial data rate is 3.75GbpȞlane
4
IC7301㸪IC7302
RH-IXD492WJQZQ
HDMI Receiver
This IC is a high quality, two input, one putput multiplexed HDMI receiver.
This IC supports 4K2K resolution䚸HDCP(1.4).
This IC supports 4K2K resolution䚸HDCP(1.4).
5
IC9002
RH-IXD721WJQZQ
Programmable Logic Device This IC is the Programmable Logic Device for frame Rate Controler
6
IC9401
RH-IXD737WJQZY
Clock Generator
This IC is a programmable clock generator intended for high performance data-
communications, telecommunications, consumer, and networking applications. There are four
internal PLLs, each individually programmable, allowing for four unique
non-integer-related frequencies.
The frequencies are generated from a single reference clock.
communications, telecommunications, consumer, and networking applications. There are four
internal PLLs, each individually programmable, allowing for four unique
non-integer-related frequencies.
The frequencies are generated from a single reference clock.
7
IC9501
RH-IXD710WJQZQ
Frame Rate Converter
for UHD
for UHD
This IC is Frame Rate Converter for UHD(3820 x 2160)
8
IC9003, IC9503
VHIW25Q64FV-1Y
Serial Flash Memory
(64Mbit)
(64Mbit)
This IC is Serial Flash Memory (64Mbit) providing a storage solution for systems with limited
space, pins and power.
space, pins and power.
80
LC-60UD20
LC-70UD20
NOTES:
Click on the first or last page to see other LC-70UD20KN (serv.man4) service manuals if exist.