Sharp TU-X1E (serv.man7) Service Manual ▷ View online
TU-X1E/RU
6 – 5
No sound is heard from the
external input device via
EXT7 (HDMI-3).
external input device via
EXT7 (HDMI-3).
Is the differential input
signal(TMDS3[D0:D2]
signal(TMDS3[D0:D2]
r)
inputted to pins (41) thru
(48) of IC5301 (TMDS-SW).
(48) of IC5301 (TMDS-SW).
Is the IC5304 (E2PROM)
data accessed by I2C and
read via pins (5) and (6)?
data accessed by I2C and
read via pins (5) and (6)?
NO
Check the HDMI connection
and others. Or see if the
IC5304 (E2PROM)'s EDID
data is accessed by I2C in
rewriting the data.
and others. Or see if the
IC5304 (E2PROM)'s EDID
data is accessed by I2C in
rewriting the data.
YES
YES
YES
NO
Is the HDMI_I2S (HDMI_SD0/CLK)
signal outputted from pins (81)
thru (89) of IC4203 (HDMI-Rx)?
signal outputted from pins (81)
thru (89) of IC4203 (HDMI-Rx)?
Is the HDMI_I2S (HDMI_SDO/CLK)
signal inputted from pins (78) and
(76) of IC1302 (S-DSP)?
signal inputted from pins (78) and
(76) of IC1302 (S-DSP)?
Is the differential output signal
(HDMITX_[0:C]
(HDMITX_[0:C]
r) outputted to
HDMI output terminal (SC4801)?
Check the HDMI-Cable and the
Monitor Audio Troubleshooting.
Monitor Audio Troubleshooting.
Check the input pins (9) and (5) of
IC4804 (HDMI_Tr) and its power,
SDA signal and soldering.
IC4804 (HDMI_Tr) and its power,
SDA signal and soldering.
Check pins (13) and (15) of MA
connector (SC2404) as well as pins
(39) and (37) of SC601, and their
peripheral circuits.
connector (SC2404) as well as pins
(39) and (37) of SC601, and their
peripheral circuits.
Check the IC4203 (HDMI-Rx) power,
SDA2 signal and soldering.
SDA2 signal and soldering.
NO
NO
NO
YES
YES
Is the HDMI_I2S(I2SO_DATA/
CLK) signal outputted from pin
(58) and (57) of IC1302 (S-DSP)?
CLK) signal outputted from pin
(58) and (57) of IC1302 (S-DSP)?
Check IC1302 (S-DSP) and its
peripheral circuits.
peripheral circuits.
NO
(
MAIN-UNIT)
(
MAIN-UNIT)
(
TERMINAL-UNIT)
<When HDMI is input>
No sound (2)-2
(The Monitor side is to be normal. )
TU-X1E/RU
6 – 6
[TERMINAL-UNIT]
[TERMINAL-UNIT]
[MAIN-UNIT]
No sound from external input devices (3)-1
No sound from EXT1 (SCART)
connecting an external input
device.
connecting an external input
device.
<EXT1>
Is A-IN1-L audio signal input
from pin (27) of SCART1
terminal (J501) to pin (9) of
IC1302 (S-DSP) ?
Is A-IN-L audio signal input from
pin (23) of SCART1 terminal
(J501) to pin (10) of IC1302
(S-DSP)?
from pin (27) of SCART1
terminal (J501) to pin (9) of
IC1302 (S-DSP) ?
Is A-IN-L audio signal input from
pin (23) of SCART1 terminal
(J501) to pin (10) of IC1302
(S-DSP)?
<EXT3>
Is IN4-L audio signal input from
pin(7) of EXT3(J502) to pin (99) of
IC1302(S-DSP)?Is IN4-R audio
signal input frompin(8) of EXT3
(J502) to pin (100) of IC1302
(S-DSP)?
Is IN4-L audio signal input from
pin(7) of EXT3(J502) to pin (99) of
IC1302(S-DSP)?Is IN4-R audio
signal input frompin(8) of EXT3
(J502) to pin (100) of IC1302
(S-DSP)?
Is the I2S audio signal (I2S0_DATA/CLK)
properly output from pins (58) and (57) of
IC1302(S-DSP) ?
properly output from pins (58) and (57) of
IC1302(S-DSP) ?
Is the I2S audio signal (I2S0_DATA) input
to pins (9) of IC4804(HDMI_Tr) properly?
to pins (9) of IC4804(HDMI_Tr) properly?
Is the differential HDMI signal
(HDMITX_[0:C]
(HDMITX_[0:C]
r) outputted to the HDMI
output terminal (SC4801) (1-12) pin
normally?
normally?
YES
YES
Is the I2S audio signal (I2S0_DATA)
input to pins (22)(21) of MA-Connector
(SC2404) properly? Moreover, also
check MA harness.
input to pins (22)(21) of MA-Connector
(SC2404) properly? Moreover, also
check MA harness.
㧯heck the power supply input and the
SDA1/SCL1 signal((52) (51) pin) of
IC1302(S-DSP) or peripheral circuit.
SDA1/SCL1 signal((52) (51) pin) of
IC1302(S-DSP) or peripheral circuit.
NO
NO
NO
YES
Check pins (99) and
(100) of EXT3 (J502)
and connection to an
external input device.
(100) of EXT3 (J502)
and connection to an
external input device.
Check pins (27) and (23) of
SCART1 and connection to
an external input device.
SCART1 and connection to
an external input device.
NO
No sound from EXT3 (J502)
connecting an external input
device.
connecting an external input
device.
YES
Check a HDMI output terminal (SC4801)
or HDMI cable.
or HDMI cable.
YES
Check the output sigmal((30-40)pin),
the Power supply input, and the
SDA2/SCL2 signal((49)(48)pin) of
IC4804, or peripheral circuits.
the Power supply input, and the
SDA2/SCL2 signal((49)(48)pin) of
IC4804, or peripheral circuits.
No sound from EXT2 (SCART)
connecting an external input
device.
connecting an external input
device.
<EXT2>
Is A-IN2-L audio signal input from
pin (6) of SCART2 terminal (J501)
to pin (13) of IC1302 (S-DSP) ?
Is A-IN2-R audio signal input from
pin (2) of SCART2 terminal (J501)
to pin (14) of IC1302 (S-DSP)?
Is A-IN2-L audio signal input from
pin (6) of SCART2 terminal (J501)
to pin (13) of IC1302 (S-DSP) ?
Is A-IN2-R audio signal input from
pin (2) of SCART2 terminal (J501)
to pin (14) of IC1302 (S-DSP)?
Check pins (6) and (2) of
SCART2 and connection to
an external input device.
SCART2 and connection to
an external input device.
NO
YES
NO
TU-X1E/RU
6 – 7
[TERMINAL-UNIT]
[MAIN-UNIT]
No sound from external input devices (3)-2
Is the I2S audio signal (I2S0_DATA/CLK)
properly output from pins (58) and (57) of
IC1302(S-DSP) ?
properly output from pins (58) and (57) of
IC1302(S-DSP) ?
Is the I2S audio signal (I2S0_DATA) input
to pins (9) of IC4804(HDMI_Tr) properly?
to pins (9) of IC4804(HDMI_Tr) properly?
Is the differential HDMI signal
(HDMITX_[0:C]
(HDMITX_[0:C]
r) outputted to the
HDMIoutput terminal (SC4801) (1-12) pin
normally?
normally?
YES
YES
Is the I2S audio signal (I2S0_DATA)
input to pins (22)(21) of MA-Connector
(SC2404) properly? Moreover, also
check MA harness.
input to pins (22)(21) of MA-Connector
(SC2404) properly? Moreover, also
check MA harness.
Check the power supply input and the
SDA1/SCL1 signal((52) (51) pin) of
IC1302((S-DSP)) or peripheral circuit.
SDA1/SCL1 signal((52) (51) pin) of
IC1302((S-DSP)) or peripheral circuit.
NO
NO
NO
No sound from EXT5 (J2401)
connecting an external input
device.
connecting an external input
device.
YES
<EXT5>
Is IN5-L audio signal input from
pin(2) of EXT5 (J2401) to pin (19)
of IC1302(S-DSP)?
Is IN5-R audio signal input from
pin(3) of EXT5 (J2401) to pin (20)
of IC1302(S-DSP)?
Is IN5-L audio signal input from
pin(2) of EXT5 (J2401) to pin (19)
of IC1302(S-DSP)?
Is IN5-R audio signal input from
pin(3) of EXT5 (J2401) to pin (20)
of IC1302(S-DSP)?
Check pins (2) and (3) of
EXT5 (J2401) and
connection to an external
input device.
EXT5 (J2401) and
connection to an external
input device.
YES
Check a HDMI output terminal
(SC4801) or HDMI cable.
(SC4801) or HDMI cable.
YES
Check the output sigmal((30-40)pin),
the Power supply input, and the
SDA2/SCL2 signal((49)(48)pin) of
IC4804, or peripheral circuits.
the Power supply input, and the
SDA2/SCL2 signal((49)(48)pin) of
IC4804, or peripheral circuits.
NO
<EXT8><EXT4>
Is IN3-L/PC_L audio signal input from
pin(5) of EXT8(J102)/pin(2) of EXT4
(PC-Audio)(J104) to pin (28) of IC1302
(S-DSP)? Is IN3-R/PC_R audio signal
input from pin(4) of EXT8(J102)/pin
(2) of EXT4 (PC-Audio)(J104) to pin
(29) of IC1302S-DSP?
Is IN3-L/PC_L audio signal input from
pin(5) of EXT8(J102)/pin(2) of EXT4
(PC-Audio)(J104) to pin (28) of IC1302
(S-DSP)? Is IN3-R/PC_R audio signal
input from pin(4) of EXT8(J102)/pin
(2) of EXT4 (PC-Audio)(J104) to pin
(29) of IC1302S-DSP?
No sound from EXT8 (J102)/EXT4
(PC-Audio)(J104) connecting an
external input device.
(PC-Audio)(J104) connecting an
external input device.
Check pins (5) and (4) of
EXT8 (J102)/pins (2) and
(3) of EXT4(PC-Audio)
(J104) and connection to
an external input device.
EXT8 (J102)/pins (2) and
(3) of EXT4(PC-Audio)
(J104) and connection to
an external input device.
NO
TU-X1E/RU
6 – 8
)
No sound except from speakers (4)-1
Check the IC1304 (CODEC) power, SDA1
and soldering.
and soldering.
No sound heard from Headphone (J101).
NO
NO
Is the audio output signal outputted from pins
(2) and (3) of Headphone terminal (J101)?
(2) and (3) of Headphone terminal (J101)?
Is the audio mute signal at pins (2) and (5) at
the base of Q1301 set at "H"?
the base of Q1301 set at "H"?
Is the HP audio signal (HP_LSS_L/R)
outputted properly from pins (40) and (42) of
IC1302 (S-PROCESSOR)?
outputted properly from pins (40) and (42) of
IC1302 (S-PROCESSOR)?
What is the sound source of the headphone?
Check the connection between the Headpho-
ne terminal (J101) and the external device.
ne terminal (J101) and the external device.
YES
Make sure that the HP-MUTE line signal
from PA connector or the MUTE-A-ALL line
signal is not at "H".
from PA connector or the MUTE-A-ALL line
signal is not at "H".
YES
Check the IC1312 (CODEC) power, X1303
and soldering.
and soldering.
YES
Check pinpoint the cause of the trouble,
from the tuner or from an external device.
from the tuner or from an external device.
Is the audio output signal (HP_L/R) outputted
properly from pins (30) and (29) of IC1312
(CODEC)?
properly from pins (30) and (29) of IC1312
(CODEC)?
NO
NO
Check the VE harness and the connectors
(P102, P1301).
(P102, P1301).
YES
No sound heard from DIGITAL AUDIO
(D2406).
(D2406).
No sound except from speakers (4)-2
Is the optical audio signal (S/PDIF_OUT)
outputted properly from pin (60) of IC1302
(S-DSP)?
outputted properly from pin (60) of IC1302
(S-DSP)?
What is the sound source of digital audio?
Is the optical audio output signal (OPT-OUT)
outputted from pin (23) of IC1304 (CODEC)?
outputted from pin (23) of IC1304 (CODEC)?
Check IC2404, MA connector and
soldering.
soldering.
NO
YES
YES
NO
NO
(FRONT-UNIT)
(
TERMINAL-UNIT)
(
TERMINAL-UNIT)
(
TERMINAL-UNIT)
(MAIN-UNIT)
Check pinpoint the cause of the trouble,
from the tuner or from an external device.
from the tuner or from an external device.
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