Touch Screen; Touch Screen Malfunction - Sony Xperia Z3 Compact Troubleshooting Manual

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 LCD FPC 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 LCD FPC or LCD FPC is damaged
– replace the Front Cover.
4. Replace Main PBA.
1291-4299 Rev 1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
12(59)