Sony Xperia TX LT29i Working Instructions page 51

Replacement: Earspeaker & Adhesive Earspeaker
Press to secure its attachment and position.
Be careful! Do not touch the contact pins!
Press to snap the hook of the RCV Flex FPC Assy.
1266-4901 Rev 1
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Sony Mobile Communications AB – Company Internal
Working Instructions (mech)
51(78)