Microphone; Main Microphone - Sony C2305 Troubleshooting Manual

Problem Areas
1.8

Microphone

1.8.1 Main Microphone

Check:
Inspect the Microphone's external port on the Front Cover
LCM TP Assy
Action:
If clogged or dirty– clean the port.
Check:
Inspect the microphone on the Sub Board Assy and the Mic
mesh on the Front Cover LCM TP Assy
Action:
1. If the port is damaged – replace the Front Cover
LCM TP Assy.
2. If Sub Board Assy is damaged, replace it.
Note: Calibrate the P-sensor/L-sensor 1277-0611
Trouble Shooting Application – mechanical whenever replacing
Front Cover LCM TP Assy or Main Board swap.
Check:
Inspect the BtB connectors of Link FPC on both Sub Board
Assy and Main PBA.
Action:
1. If not properly connected – disconnect and reconnect.
2. If dirty or oxidized – clean it.
3. If the Link FPC is defective, replace the Front Cover LCM
TP Assy.
4. Replace Main PBA.
Note: Calibrate the P-sensor/L-sensor 1277-0611
Trouble Shooting Application – mechanical whenever replacing
Front Cover LCM TP Assy or Main Board swap.
1275-8442 Rev1
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Sony Mobile Communications AB – Company Internal
Troubleshooting Guide (mech)
18(45)