Trouble Shooting Guide Repair Instruction Mechanical/
1235-7834
Rev 2
Sony Ericsson Mobile Communications AB
– Company Internal 5(25)
Problem Areas
1.2 Display
1.2.1 Graphics & Illumination
Check:
Check whether the phone vibrates and the Navigation
Keypad illuminates after the power key has been pressed
Action:
If the activation described above is not detected, refer to
section 1.1 ‘Power’
Check:
Inspect the connector
Action:
1. If not properly connected
– disconnect and reconnect it
2. If dirty or oxidized
– clean the male and female sides of
the connector
Check:
Inspect the contact pin on the back of the Display 2.2 TFT
(a) and contact pad on the PBA (b)
Action:
1. If the contact pins are flattened
– gently use the Flex Film
Assembly Tool to lift them up higher than the surface
2. If the contact pin / contact pad dirty or oxidized
– clean
the contact pin / contact pad
3. If the Display 2.2 TFT is damaged
– replace it
4. Send to higher level of repair
