External Memory; Memory Card Not Detected - Sony Xperia Ion LT28i Working Instructions

Problem Areas

1.24 External Memory

1.24.1 Memory Card not detected

Check:
Inspect the external port of the memory card holder and
check if a memory card can be properly inserted.
Action:
If dirty or clogged – clean the external port.
Note: Ensure the BtB connector of battery is
disconnected in the following steps!
Check:
Inspect the memory card holder on the PFC Side Key.
Action:
If dirty or clogged – clean the holder.
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 memory card holder or the BtB connector of FPC
Side Key is damaged – replace the FPC Side Key.
4. Replace board.
1261-4721 Rev 3
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
44(62)