Read Sharp TU-X1E (serv.man7) Service Manual online
TU-X1E/RU
6 – 2
(MAIN-UNIT)
(MAIN-UNIT)
(MAIN-UNIT)
(TERMINAL-UNIT)
No audio output during DTV reception
Is the digital signal (FED_D/FECLK) of
pins (48) and (50) of P2402 (MB-
Connector) outputted normally ?
pins (48) and (50) of P2402 (MB-
Connector) outputted normally ?
NO
YES
Checklist ; : 1) Is the volume set to MIN or MUTE on the remote control ?
Set the desired volume.
2) Is ANT-CABLE disconnected or connected improperly ?
Connect it correctly as per the operation manual.
Is the differential output signal
(HDMI TX_[0:C]
(HDMI TX_[0:C]
r) outputted to pins (1)
thru(12) of HDMI-terminal (SC4801)
normally?
normally?
Check the HDMI cable or refer to the
Monitor Audio Troubleshooting.
Monitor Audio Troubleshooting.
YES
NO
(during the reception of DTV broadcasting)
˴
(The Monitor side is to be normal. )
No sound (1)
Is the I2S0_DATA/CLK signal inputted to
pins (9) and (5) of IC4804 (HDMI_Tx)?
pins (9) and (5) of IC4804 (HDMI_Tx)?
See where the I2C line gets low.
Is the DTV_I2S_DATA/CLK signal
outputted from pins (58) and (57) of
IC1302 (A-DSP)?
outputted from pins (58) and (57) of
IC1302 (A-DSP)?
YES
Check pins (22) and (21) of MA
connector (SC2404) as well as pins
(30) and (29) of SC601.
connector (SC2404) as well as pins
(30) and (29) of SC601.
Is the I2S0_DATA/CLK signal outputted
from pins (9) and (12) of IC2405 (I2S_SW)?
from pins (9) and (12) of IC2405 (I2S_SW)?
YES
Check pins (9) and (11) of MA
connector (SC2404) as well as pins
(43) and (41) of SC601, and their
peripheral circuits.
connector (SC2404) as well as pins
(43) and (41) of SC601, and their
peripheral circuits.
NO
YES
Replace IC8101 (V-PROCESSOR).
NO
NO
Is the DTV_SD0/CLK signal outputted
frompin (F3) of IC8101(V-PRO.)?
frompin (F3) of IC8101(V-PRO.)?
NO
Check the IC2405 (I2S_SW) input
line.
line.
YES
A
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