Sanyo LCD-46XR10DKH, Руководство по обслуживанию

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24
2.3. Picture, but no sound
Check if
N511-4#,5#,32#,33# are
24V?
Check if
N511-12#,25# input
signal?
Yes
No
Check 24V power
supply on power
board and other
circuits
Check if
N511-10#,27 is high level?
Yes No
Check the circuit
around the sound
amplifier
Check if
N301-3#,5# input signal?
Yes No
Check the mute
circuit of the sound
amplifier
Yes No
Check the sound
output circuit of
the main chip
Check the circuit
of earphone
amplifier