Troubleshooting Guide (mech)
1273-2281 Rev2
Sony Mobile Communications AB –
40(48)
Problem Areas
1.27 Network & Signal
1.27.1 No/Poor signal
Check:
Inspect the Antenna Main on the Middle Frame Assembly.
Action:
If dirty – clean it.
Check:
Inspect the contact pads on the Antenna Main and the
contact pins on the Sub PBA Assembly.
Action:
1. If dirty or oxidized – clean the pads and pins.
2. If damaged, replace the Middle Frame Assembly.
Check:
Inspect the pins and connector on Sub PBA Assembly.
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