Sony Xperia TX LT29i Working Instructions page 98

Problem Areas: Speaker
Check:
Inspect the Loudspeaker's pins and the pads on the Sub
Board Assy.
Action:
1. If dirty – clean them.
2. If the pins of the Loudspeaker are damaged – replace the
Loudspeaker.
Check:
Inspect the BtB connector of Key Flex FPC to the Sub Board
Assy.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean the both sides of the BtB
connector.
3. If the pads or the BtB connector of the Sub Board Assy is
damaged – replace the Sub Board Assy.
1266-5087 Rev 1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
16(57)