Touch Screen; Touch Screen Malfunction - Sony C2305 Troubleshooting Manual

Problem Areas
1.3

Touch Screen

1.3.1 Touch Screen malfunction

Check:
Inspect the touch screen on the Front Cover LCM TP Assy
Action:
If dirty – clean it.
If: The end user has complained about unexpected behavior of the
touch screen or the touch keys.
Action:
Update SW and check again.
Check:
Inspect the ZIF connector on SIM Board Assy.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean it.
3. If the SIM Board Assy is damaged, replace the SIM Board
Assy.
3. If the Touch Panel is damaged, replace the Front Cover
LCM TP Assy.
4. Replace Main PBA.
Note: Calibrate the P-sensor/L-sensor 1277-0611
Trouble Shooting Application – mechanical whenever replacing
Front Cover LCM TP Assy or Main Board swap.
1275-8442 Rev1
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Troubleshooting Guide (mech)
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