Troubleshooting Guide (mech)
1261-4721 Rev 3
Sony Mobile Communications AB
– Company Internal
15(62)
Problem Areas: Illumination
1.5.2 Menu, Home, Back, and Search
keys Illumination
Check:
Inspect the illumination window of the menu, home, back
and search keys on the Cover Front Assy.
Action:
If dirty
– clean them.
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 illumination window of the
keys 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.
