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

Problem Areas
1.3

Touch Screen

1.3.1 Touch Screen malfunction

Check:
Inspect the touch screen.
Action:
1. If dirty – clean it.
2. If the end user has complained about unexpected
behavior of the touch screen or the touch keys. –
Calibrate the Touch Panel following1270-6729 Trouble
Shooting Application.
Check:
Inspect the ZIF connector of the Cover Front Assy to the
PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean it.
Check:
Inspect the ZIF connector of the touch panel to the Cover
Front Assy.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean it.
3. If the touch screen or the FPC of the Cover Front Assy is
damaged – replace the Cover Front Assy.
4. Replace board.
1266-5137 Rev 2
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
8(43)