Display; Graphics & Illumination - Sony XPERIA ST27i Troubleshooting Manual

Problem Areas
1.4

Display

1.4.1 Graphics & Illumination
Check:
Check whether the phone vibrates after the on/off key has
been pressed.
Action:
If the activation described above is not detected, refer to
section 1.1 'Power'.
Check:
Inspect the BtB connector of the Display FPC to the Main
PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean both sides of the BtB
connector.
Check:
Inspect the Cover Front Housing Display Assy.
Action:
1. If the Cover Front Housing Display Assy or its BtB
connector is damaged – replace the Cover Front Housing
Display Assy.
2. Replace board.
1265-6294 Rev 4
© Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
11(59)