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Flow Chart of Troubleshooting
9-13
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9-1-6. Speaker Part
U402
B1
= 3.7V?
U402
D1 , D2
= 'H'?
Resolder or replace UCP300
No
Yes
No
Resolder or replace U402
Yes
Is there any signal at
C1(EAR2) & C2(EAR1)
?
Resolder or replace UCP300
No
Yes
No
END
Is Speaker working?
Change the Speaker
Yes
Yes
Is there any signal at
B5(OUT+) & D5(OUT-)
?
Resolder or replace U402
No
Yes
Speaker does not work
Summary of Contents for SGH-P270
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