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Problem Areas
1.23 Network & Signal
1.23.1 No/Poor signal
Check:
Inspect the Antenna Main on the Rear Cover.
Action:
If dirty – clean it.
Check:
Inspect the contact pads on the Antenna Main and the
contact pins on the main PBA.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If the pads are damaged – replace the Antenna Main.
Check:
Inspect the ZIF connector of the Link FPC to the Sub Board
Assembly.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean it.
1268-3899 Rev 3
©
Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
35(44)
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