Samsung SGH-i200 Service Manual page 34

Flow Chart of Troubleshooting and Circuit Diagrams
10-1-7. Speaker Part
Speaker does not work Speaker does not work
R500 at Speaker S/ W(U500) ="High" R500 at Speaker S/ W(U500) ="High"
Pin 4, 8 at U500 Pin 4, 8 at U500
(SPK_SEL)= "High" (SPK_SEL)= "High"
TA500, C500 TA500, C500
at Audio AMP(U501) = "High" at Audio AMP(U501) = "High"
C517, C524 C517, C524
Check soldering at Codec(U502) Check soldering at Codec(U502)
Pin 8 =3.0V, Pin 7=1.8V Pin 8 =3.0V, Pin 7=1.8V
Pin 4="High" at Audio power(U504) Pin 4="High" at Audio power(U504)
Pin 4=19.2Mhz Pin 1="H" Pin 4=19.2Mhz Pin 1="H"
at AND gate U704 at AND gate U704
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
Yes Yes
End End
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No No
No No
Replace U500 or U502 Replace U500 or U502
No No
No No
No No
No No
10-18
Resold R500 Resold R500
Replace U501 Replace U501
Resold C517, C524 Resold C517, C524
Replace U504 Replace U504
Replace U704 Replace U704