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Flow Chart of Troubleshooting
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9-11
9-7. Receiver Part
Speaker does not work
Yes
No
U600 pin 7 = 2.9V?
Resolder or replace U600
No
Resolder U600
U600 pin 15.17 ≒ 1.8V?
(When U500 operate)
Yes
No
Resolder SLC700
SLC 700pin 49.51 ≒ 1.8V?
(When U500 operate)
Yes
No
Change the Speaker
Is Speaker working?
END
Yes
Yes
No
Yes
Resolder U600
U600 pin 22.23 ≒ 1.8V?
(When U500 operate)