Samsung SGH-E360 Service Manual page 38

Flow Chart of Troubleshooting
7-6. Speaker Part(Melody)
Speaker does not work
Yes
Check the U604
Pin 3, 15
Yes
Check the U603 Pin 5
(EAR1)
Yes
U300 pin 17,18 ≒ 1.8V?
(When U300 operate)
Yes
Check LCD MODULE
SPK+, SPK-
= Operate
Yes
Is Speaker working?
Yes
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No
No
Check the U603 Pin 1 (LOUD_EN),
No
No
Check the board to board
No
7-12
Check the U300
Resolder U604
Resolder U300
Connector
Change the Speaker