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Flow Chart of Troubleshooting
8. Receiver Part
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Receiver does not work
Yes
U604 pin 7,8 = 1.5V?
Yes
U604 pin 7,8 = 1.5V?
Yes
CN700 pin 23, 25= 1.5V?
Yes
SPK +,- PAD = 1.5V?
Yes
Check the soldering of the
spaeaker wire
Yes
Is Receiver working?
Yes
END
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manuals search engine
No
Resolder U200 or change PBA
No
Resolder or replace U604
No
change U200
No
Change the LCD Module
No
Modify the speaker wire soldering
No
Replace the Speaker
7-18
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