Problem Areas: Illumination
2. If the window is damaged – replace the Cover
Transparent Assy.
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 Illumination LED on the Main FPC.
Action:
1. If dirty – clean it.
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
Sony Mobile Communications AB – Company Internal
Trouble Shooting Guide Repair Instruction Mechanical/
15(57)