Sony Xperia TX LT29i Working Instructions page 69

Reassembly
Gently push against the RF Cable to snap it into the hook of
the Main PBA.
Connect this end of the RF Cable.
Press along to insert the RF Cable into the socket.
Push the RF Cable as shown to secure its position.
1266-4901 Rev 1
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Sony Mobile Communications AB – Company Internal
Working Instructions (mech)
69(78)