Volume Key - Sony Xperia TX LT29i Working Instructions

Problem Areas: Keys
Check:
Inspect the BtB connector of Key Flex FPC 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 camera switch, the BtB connector or the FPC of
Key Flex FPC is damaged – replace the Key Flex FPC.
4. Replace board.

1.2.3 Volume Key

Check:
Inspect the external area of the Key Volume.
Action:
If dirty – clean it.
Check:
Inspect the Key Volume (a) and the key volume switch (b).
Action:
1. If dirty – clean them.
1266-5087 Rev 1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
7(57)