Read Sony KDL-32BX301 Service Manual online
Troubleshooting-4
Check audio steps
No voice output
from speakers
from speakers
Check if “Mute”
function is enable or not
Yes
Use remote controller to
Disable “MUTE” function
and increase volume
Disable “MUTE” function
and increase volume
No
Ensure that signal cable is
connected correctly and has
signal output. Check the
earphone jack is not plug-in.
connected correctly and has
signal output. Check the
earphone jack is not plug-in.
Note: speaker will not have output
when plug in earphone jack
when plug in earphone jack
Check PSU CN6401 pin4
AUDIO_12V
AUDIO_12V
Check if MB U801
pin8 & pin11 have 12V
pin8 & pin11 have 12V
No
Yes
Check MB U801
audio output
audio output
Check equipment output
No
MB U801 failure
No
Check MB U801
output signal
output signal
Yes
Yes
Check “MUTE” and “HP” nets circuit
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