Network & Signal; No/Poor Signal - Sony Xperia S LT26i Troubleshooting Manual

Problem Areas
1.29 Network & Signal

1.29.1 No/Poor signal

Check:
Inspect the Main Antenna.
Check:
Inspect the Main Antenna contact pads and contact pins and
pads on the Cover Transparent Assy and contact pins on
the main FPC.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If the pads on Main Antenna are damaged – replace the
Main Antenna.
3. If the pins and pads on the Cover Transparent Assy are
damaged – replace the Cover Transparent Assy.
1257-2931 Rev 6
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Sony Mobile Communications AB – Company Internal
Trouble Shooting Guide Repair Instruction Mechanical/
49(57)