Troubleshooting Guide (mech)
1261-4721 Rev 3
Sony Mobile Communications AB
– Company Internal
10(62)
Problem Areas
1.3 Touch Screen
1.3.1 Touch Screen malfunction
Check:
Inspect the touch screen.
Action:
If dirty
– clean it.
Note: Ensure the BtB connector of battery is
disconnected in the following steps!
Check:
Inspect the both sides of the ZIF connector on the FPC
Bottom Flex and the touch panel FPC of Cover Front Assy.
Action:
1. If not properly connected
– disconnect and reconnect.
2. If dirty or oxidized
– clean it.
3. If the touch panel FPC or the touch screen is damaged
–
replace the Cover Front Assy.
Check:
Inspect the BtB connector of FPC Bottom Flex to the PBA.
Action:
1. If not properly connected
– disconnect and reconnect.
2. If dirty or oxidized
– clean the both sides of the BtB
connector.