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5
No sound only from FRONT USB terminal or only from MHL terminal (There may be troubles with the power
source of circuit and control signals. Bad connection of cables and connectors should be also considered.)
Check the path of the relevant signal in FRONT HDMI USB ASSY.
Yes
Check the path of the relevant signal in DIGITAL MAIN ASSY.
No sound only in HDMI, MEDIA SERVER and INTERNET RADIO (There may be troubles with the power source of
circuit and control signals. Bad connection of cables and connectors should be also considered.)
Check the path of the relevant signal in DIGITAL MAIN ASSY.
No sound only in BT (Single channel - Check only the signal path of the relevant channel. Plural channels -
There may be troubles with power source, control signals: MUTE, DET and others. Bad connection of cables
and connectors should be also considered.)
Can it connect (paring) with any BT
Devices?
Yes
Check the degital audio signal output
(CN9203 - 26, 28, 30, 32, 34pin) of
DIGITAL MAIN ASSY
Yes
Replace the DIGITAL MAIN ASSY
No sound only in tuner (There may be troubles with the power source of circuit and control signals.
Bad connection of cables and connectors should be also considered.)
Check the path of the relevant channel in AUDIO ASSY, and check TUNER MODULE.
No sound only in POWERD HD ZONE
Speaker setting is correct ?
Yes
Is there signal in the CN9702-22, 24, 25, 26pin of
DIGITAL MAIN ASSY ?
Yes
Is there signal in the IC2038-1, 2, 3, 4pin of
DAC HIGH ASSY ?
Yes
Is there signal in the IC2038-10, 11pin of DAC HIGH ASSY ?
Yes
Is there signal in the CN2003-1, 3pin of DAC HIGH ASSY ?
Yes
Check the VOL IC(IC2501, IC3273) peripheral circuit of
AUDIO ASSY.
No sound by MEDIA SERVER, INTERNET RADIO, FRONT USB, BT and Wi-Fi
Check the connection between DIGITAL MAIN ASSY and
Network Module (AXX7293)
Yes
Check the degital audio signal output (CN9203 - 26, 28, 30, 32, 34pin)
of DIGITAL MAIN ASSY
No
Remove the Network Module (AXX7293) from DIGITAL MAIN ASSY
and check the following voltages of CN9203 - 1pin or 3pin :1.2V
/ 2pin or 4pin : 2.5V / 7pin or 9pin : 1.8V / 8pin or 10pin : 3.3V
Yes
Replace the Network Module(AXX7293)
5
6
No
Is the Antenna (ADH7049) connected to
the Network Module(AXX7293)?
Yes
Yes
Is the Home Menu OSD displayed?
No
Replace the Network Module(AXX7293)
No
No
No
No
No
No
Yes
No
SC-95
6
7
No
Connect the Antenna (ADH7049)
to Network Module (AXX7293)
Remove the Network Module
(AXX7293) and check the following
No
voltages of CN9203
1pin or 3pin :1.2V /
2pin or 4pin : 2.5V /
OK
7pin or 9pin : 1.8V /
8pin or 10pin : 3.3V
Check the Power IC for problem voltage
or replace the DIGITAL MAIN ASSY
Set the Speaker setting correctly.
Check the peripheral circuit of IC1818.
Check the path from IC1602.
Check the peripheral path.
Check the peripheral circuit of IC2038.
Check the peripheral circuit of IC2039.
Reconnect the Network Module(AXX7293) to
DIGITAL MAIN ASSY.
Check the digital audio signal lines or
replace the DIGITAL MAIN ASSY
Check the Power IC for problem voltage or
replace the DIGITAL MAIN ASSY
7
8
A
B
No Good
C
D
E
F
25
8
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