Sony Xperia S LT26i Troubleshooting Manual page 12

Problem Areas: Display
Check:
Inspect the BtB connector of the FPC Main 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 Main FPC.
Action:
1. If the FPC Main Assy or its BtB connector is damaged –
replace the Main FPC.
2. Replace board.
1257-2931 Rev 6
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Sony Mobile Communications AB – Company Internal
Trouble Shooting Guide Repair Instruction Mechanical/
12(57)