Touch Screen; Touch Screen Malfunction - Sony Xperia Tablet Z Troubleshooting Manual

Problem Areas
1.3

Touch Screen

1.3.1 Touch Screen malfunction

Check:
Inspect the touch screen of the Front Assembly.
Action:
1. If dirty – clean it.
2. If scratched or damaged – replace the Front Assembly.
Check:
Inspect the BtB connector of Front Assembly to PBA
Complete Sub.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean the both sides of the BtB
connector.
3. If the FPC or connector of Front Assembly is damaged –
replace Front Assembly.
Check:
Inspect the BtB connector of FPC Assembly Relay SUB
PBA to Main PBA and PBA Complete Sub.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean the both sides of the BtB
connector.
1274-7272 Rev 1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
9(65)