Sony XPeria ST25i Working Instructions page 31

Replacement: Ear Speaker & Receiver adhesive
INSTALLATION
Place a new Receiver adhesive in correct position of the
back side of Ear Speaker.
Align the Receiver adhesive with the inner metal edge by all
four sides as shown.
Place the new Ear Speaker with Receiver adhesive in
correct position.
The pin direction should be as shown in the picture!
Make sure there is no adhesive on Carrier Window Front
assy.
Press to secure its position and attachment.
Do not touch the pins of Ear Speaker!
1263-4086 Rev 6
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Working Instruction Repair Instruction Mechanical
31(53)