Sony Xperia M Manual page 64

Problem Areas: Flash LED
3. If the connector or the SIM card holders of the SIM Board
is damaged – replace the SIM Board.
4. Replace the Main PBA.
G-sensor Calibration should be performed after
replacing SIM Board.
For G-sensor Calibration, refer to 1277-8589 Trouble
Shooting Application.
1277-1356 Rev 2
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Troubleshooting Guide (mech) G (
43(45)