Network & Signal; No/Poor Signal - Sony Xperia tipo ST21i Troubleshooting Manual
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Also See for Xperia tipo ST21i:
- User manual (120 pages) ,
- Working instructions (39 pages) ,
- Test instructions (20 pages)
Table of Contents
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Problem Areas
1.29 Network & Signal
1.29.1 No/Poor signal
Check:
Inspect the main antenna on the Frame Antenna Assy.
Check:
Inspect the main antenna contact pads on the Frame
Antenna Assy and contact pins on the PBA.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If the pads are damaged – replace Frame Antenna Assy.
3. Replace PBA.
1266-1682 Rev 4
©
Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
39(44)
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