Network & Signal; No/Poor Signal - Sony Xperia Z3 Troubleshooting Manual

Problem Areas
1.32 Network & Signal

1.32.1 No/Poor signal

Check:
Inspect the contact pads on the Main Antenna and the
contact pins on Sub PBA-A and Sub PBA-B.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If the contact pads are damaged – replace the Main
Antenna.
3. If the contact pins on Sub PBA-A are damaged – replace
the Sub PBA-A.
4. If the contact pins on Sub PBA-B are damaged – replace
the Sub PBA-B.
1288-9441 Rev 2

Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
51(59)