Sony Xperia S LT26i Troubleshooting Manual page 8

Problem Areas: Keys
Action:
If the Key On/Off is damaged – replace it.
Check:
Inspect the BtB connector of the FPC Jack Assy to the main
PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the FPC Jack Assy.
Action:
1. If the FPC Jack Assy or its BtB connector is damaged –
replace the FPC Jack Assy.
2. Replace board.
1257-2931 Rev 6
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Sony Mobile Communications AB – Company Internal
Trouble Shooting Guide Repair Instruction Mechanical/
8(57)