Troubleshooting Guide (mech)
1277-9814 Rev
2
Sony Ericsson Mobile Communications AB – Company Internal
12(63)
Problem Areas
1.3 Touch Screen
1.3.1 Touch Screen malfunction
Check:
Inspect the touch screen of the Front Cover.
Action:
1. If dirty – clean it.
2. If scratched or damaged – replace the Front Cover.
Check:
Inspect the BtB connector of FPC Assembly Relay to Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector of FPC Assembly Relay or FPC is
damaged – replace the FPC Assembly Relay.
4. Replace Main PBA.