Sony Xperia Z1 Troubleshooting Manual page 13

Problem Areas: Touch Screen
Check:
Inspect the BtB connector of FPC Assembly Relay to Front
Cover and the BtB connector of Front Cover.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. Replace Front Cover.
4. Replace Main PBA.
1277-9814 Rev 2
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Sony Ericsson Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
13(63)