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Case 2 : Sound Problem
Case 2 : Sound Problem
All input source has problem ?
Yes
Is there output voltage at
the speaker terminal ?
e.g. A14, A15 terminal
connected to the speaker?
the speaker terminal ?
e.g. A14, A15 terminal
connected to the speaker?
Check each input source
same as picture problem.
Refer to the previous page.
same as picture problem.
Refer to the previous page.
Yes
Speaker
No
Listening sound with headphone
is possible ?
is possible ?
Yes
No
No
A board
Audio signal
processor
e.g. IC4510
A board
Audio amp
e.g. IC2301
Under the wrong operation,
Even if MUTE is working
Listening by headphone is possible.
Even if MUTE is working
Listening by headphone is possible.
If only optical audio output has problem,
its terminal problem. e.g. D3050
its terminal problem. e.g. D3050
IC5480 Mute output is
High?
High?
Yes
No
A board
Audio Mute
e.g. IC5480
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