XOCECO LC-32FC18, Руководство по обслуживанию

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3.4 No sound but with picture
Note: the audio signal of ATSC and HDMI is directly fed into MSP4440 with the I2S signal format, so,
if the audio signal of these channels has problem, it will not lie in N601.
No sound but with picture
Check if XV02 has output
Speaker fails to work
Check if correspondent pins of power
amplifier have output
Check periphery circuit
of power amplifier’s
back level Check if there have signals
inputted from R207 and R208 to
power amplifier
Check periphery circuit of power
amplifier, power supply circuit and
circuit of pin MUTE Check if correspondent
channels of N201 have
input signal
Check periphery circuit of
N801
，
crystal oscillation
and power supply circuit
Follow the direction of audio
signal input to check each
channel and N601
Yes
No
Yes No
Yes
No
Yes No