Samsung SGH-F700V Service Manual page 52

Flow Chart of Troubleshooting
9-6. Speaker Part(Melody)
Speaker does not work
Is the terminal of speaker
AMP_OUT_LM/LP/RM/RP
Check the Earjack FPCB
Check the output circuit
of U101(Sub), U105(Sub)
Is the R112(Sub) 'H' and
LM/LP/RM/RP ok?
R631(Sub), R632(Sub) is
Is Speaker OK ?
Yes
OK?
Yes
Check the
ok?
Yes
ok?
Yes
Yes
CODEC OUT
Yes
'H' ?
Yes
Yes
END
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No
Check the Speaker Wire
No
Resoler the Speaker wire
No
Change or Resolder Earjack FPCB
No
Change or Resolder U101(Sub),
No
Check the Slide FPCB
No
Change or Resolder U603(Sub)
No
Change the Speaker
9-12
U105(Sub)