Troubleshooting Guide (mech)
1261-4721 Rev 3
Sony Mobile Communications AB
– Company Internal
8(62)
Problem Areas: Keys
Check:
Inspect the key volume switch and the FPC Side Key.
Action:
If dirty
– clean it.
Check:
Inspect the BtB connector of FPC Side Key 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.
3. If the key volume switch, the FPC or the BtB connector of
FPC Side Key is damaged
– replace the FPC Side Key.
4. Replace board.
1.2.4 Key On/Off
Check:
Inspect the Key On/Off.
Action:
1. If dirty
– clean it.
