Sharp LC-32LE345T

LC-32LE345T
6 – 6
Function Trouble ( Audio Out, Digital Audio Output, Headphone)
Audio Out No sound
Check if the speaker out is OK
Check if there is sound wave on the
CN21
Check if the external amplifier is right
setting
Check if there is music play
Change Main PWB
OK
OK
OK
NG
NG
Digital Audio Output No sound
Check if the CN9 have red light out?
Check if the external amplifier is right
setting
Change Main PWB
NG
OK
OK
Headphone No Sound
Check if the power supply for UA91 is
OK?
Check if the Pin13 of UA91 voltage is
33V
Change Main PWB
Check if the voltage of RA94 is 0V?
OK
NG
NG
OK
3
.
3V
Check the circuit between the CA91 &
C92 and the U6
Change Main PWB
Check if the voltage of RA94 is 0V?
Change Main PWB
OK
OK
NG