Sony Xperia TX LT29i Working Instructions page 132

Problem Areas: Network & Signal
Check:
Inspect the main antenna on the Main Antenna Assy.
Action:
1. If dirty – clean it.
2. If the main antenna is damaged – replace the Main
Antenna Assy.
Check:
Inspect the main antenna contact pins on the Sub Board
Assy and contact pads on the Main Antenna Assy.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If the pads are damaged – replace Main Antenna Assy.
1266-5087 Rev 1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
50(57)