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

Problem Areas
1.23 Network & Signal

1.23.1 No/Poor signal

Check:
Inspect the main antenna on the Rear Cover Assy.
Action:
1. If dirty – clean it.
2. If the main antenna is damaged – replace the Rear Cover
Assy.
Check:
Inspect the main antenna contact pins on the Sub Board
Assy and contact pads on the Rear Cover Assy.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If the pads are damaged – replace Rear Cover Assy.
1266-5137 Rev 2
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
35(43)