Sony Xperia Z1 Troubleshooting Manual page 16

Problem Areas: Speaker
3. If the contact pads of FPC Assy Relay/Side Key are
damaged - replace the FPC Assy Relay/Side Key.
Check:
Inspect the BtB connector of FPC Assy Relay/Side Key to
Main PBA.
Action:
1. If not properly connected – disconnect and reconnect it.
2. If dirty or oxidized – clean it.
3. If the BtB connector of FPC Assy Relay/Side Key or FPC
is damaged – replace the FPC Assy Relay/Side Key.
4. Replace Main PBA.
1279-7185 Rev 1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
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