Handsfree By Wire; Connection To Portable Handsfree Fails - Sony Xperia TX LT29i Working Instructions

Problem Areas

1.35 HandsFree by Wire

1.35.1 Connection to Portable
HandsFree fails
Check:
Inspect the external port of the Audio Jack.
Action:
If dirty or oxidized – clean the connector.
Check:
Inspect the contact pins on the Audio Jack and the contact
pads on the RCV Flex FPC.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If the pins are damaged – replace the Audio Jack.
Check:
Inspect the BtB connector of the RCV Flex FPC to the PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean it.
1266-5087 Rev 1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
54(57)