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Karaoke in does not work
Karaoke in does
not work
Go
Check signal at XP9 PIN30:MIC_in signal
from front board normal or not
Yes
Check Main Board U18 74HC4052 PIN5,
PIN14 L/R signal input right or not
Yes
Check U18 74HC4052 whether broken
not
Yes
Replace U18
5-11
No
Refer to Main Board XP9
No
Check the cable between XP9 and XP9
or
No
Check Main Board U26
Trouble shooting Chart
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