
Troubleshooting Guide (mech)
1279-7185 Rev 1
Sony Mobile Communications AB – Company Internal
13(68)
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 Display Frame Assy FPC to
Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector of Display Frame Assy FPC or FPC
is damaged – replace the Display Frame Assy.
4. Replace Main PBA.