Sony Xpreia acro S Working Instructions page 151

Problem Areas: Proximity Switch
Action:
If damaged – replace the PBA Flex Module.
Check:
Inspect the BtB connector of the PBA Flex Module to the
PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean them.
3. If the proximity sensor, the FPC or the BtB connector of
the PBA Flex Module is damaged – replace the PBA Flex
Module.
4. Replace PBA.
1267-1086 Rev 2
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
39(72)