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Flow Chart of Troubleshooting
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9-17
9-8. Speaker Part
Speaker does not work
Yes
Not OK
Check the circuit
from L500, L501
Resolder L500, L5001
OK
END
Replace speaker
Resolder U502 or check C503, C504
Resolder R517, R518
Not OK
Check the
PIN 5, 8 of U502 (Loud
mode),
R517, 518 (Main mode)
Yes
Check the pin 16, 4 of
U505
No
Replace UCP 200
OK
Not OK