Sony Xperia M - Bluetooth and WLAN; Bluetooth or WLAN Connection Failure

Troubleshooting Guide (mech)
1277-1356 Rev 2
© Sony Mobile Communications AB – Company Internal
23(45)
Problem Areas
1.11 Bluetooth and WLAN
1.11.1 Bluetooth or WLAN connection
failure
Check:
Inspect the Bluetooth and WLAN antenna on the Rear
Cover.
Action:
If the antenna is damaged – replace the Rear Cover.
Check:
Inspect the Bluetooth and WLAN antenna contact pad on
the Rear Cover and the contact pins on the Main PBA.
Action:
1. If dirty – clean the pad and pins.
2. If the contact pad is damaged – replace the Rear Cover.
3. Replace the Main PBA.
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