Touch Screen; Touch Screen Malfunction - Sony Xperia Z1 Troubleshooting Manual

Problem Areas
1.3

Touch Screen

1.3.1 Touch Screen malfunction

Check:
Inspect the touch screen of the Display Frame Assy.
Action:
1. If dirty – clean it.
2. If scratched or damaged – replace the Display Frame
Assy.
Check:
Inspect the BtB connector of Display Frame Assy 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 Display Frame Assy FPC or FPC
is damaged – replace the Display Frame Assy.
4. Replace Main PBA.
1279-7185 Rev 1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
12(68)