Touch Screen; Touch Screen Malfunction - Sony Xperia C3 Dual Test Instructions

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 Touch Panel FPC to LCD FPC.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector of touch panel FPC or FPC is
damaged – replace the Display Frame Assy.
4. If the BtB connector of LCD FPC or FPC is damaged –
replace the Display Frame Assy.
5. Replace Main PBA.
1290-1679 Rev 3
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Troubleshooting Guide (mech)
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