Troubleshooting Guide (mech)
1261-4721 Rev 3
Sony Mobile Communications AB
– Company Internal
24(62)
Problem Areas: Microphone
Note: Ensure the BtB connector of battery is
disconnected in the following steps!
Check:
Inspect the secondary microphone on the PBA Sub NFC
Assy.
Action:
If dirty
– clean it.
Liquid is not allowed!
Check:
Inspect the BtB connector of FPC Side Key to the PBA.
Action:
1. If not properly connected
– disconnect and reconnect.
2. If dirty or oxidized
– clean the both sides of the BtB
connector.
Check:
Inspect the ZIF connector of FPC Side Key to the PBA Sub
NFC Assy.
Action:
1. If not properly connected
– disconnect and reconnect.
2. If dirty or oxidized
– clean the both sides of the ZIF
connector.
3. If the secondary microphone or the ZIF connector of PBA
Sub NFC Assy is damaged
– replace the PBA Sub NFC
Assy.
