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No audio
Normal Operation
Connect the cable on
J1301
No
Yes
Yes
8. AUDIO PART (RX)
Connect the Speaker Cable
No
Check FB1302
No
Yes
Check U1302, C1301,
C1302, R1320, R1321,
R1318, R1319
No
Yes
Check U201
No
Yes
Check
connection of Cable on
J1301 OK or not ?
Check
connection of Speaker
Cable OK or not ?
Check the
voltage of FB1302
5V or not ?
Check the
signal of pin no. 6, 8 on
U1301 OK or not ?
Check the
signal of pin no. 1,2,3,4
on U1302 OK or not ?