Sony Xperia Z1 Troubleshooting Manual page 60

Problem Areas: Charging
3. If the contact pins of the FPC Assembly Charger are
damaged – clean the FPC Assembly Charger.
Check:
Inspect the BtB Connector of the Battery to Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean the both sides of the BtB
connector.
3. If the BtB connector, the Battery FPC or the Battery is
damaged – replace the Battery.
4. Replace Main PBA.
1277-9814 Rev 2

Sony Ericsson Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
60(63)