Speaker Part - Samsung SGH-E840 Service Manual

Flow Chart of Troubleshooting

3-1-6. Speaker Part

Speaker does not work
Is the terminal of
Speaker OK?
O.K.?
YES
Check the
p i n 5 8, 5 9o f H DC6 02
"HIGH"
YES
Check the circuit
around U402
YES
Check the voltage of
R419, R420 i s high
YES
Is speaker OK?
YES
END
NO
NO
NO
NO
NO
3-14
check the specker connector
HDC602
①
Change or resolder
HDC602
②
Change or resolder
around U40 2
③
Check U CP300
Change speaker