Handsfree By Wire; Connection To Portable Handsfree Fails - Sony Xperia Ion LT28i Working Instructions

Problem Areas

1.35 HandsFree by Wire

1.35.1 Connection to Portable
HandsFree fails
Check:
Inspect the Audio Jack.
Action:
If dirty or oxidized – clean the connector.
Note: Ensure the BtB connector of battery is
disconnected in the following steps!
Check:
Inspect the contact pins on the Audio Jack and the contact
pads on the FPC Top Flex.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If the pins are damaged – replace the Audio Jack.
Check:
Inspect the both sides of the ZIF connector on the Main PBA
and the FPC Top Flex.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean it.
1261-4721 Rev 3
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
59(62)