4. TROUBLE SHOOTING
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4.11.5 Ear-MIC troubleshooting
Ear MIC control signal is generate by TWL6040 and OMAP4430.
- Disable to recognize headset insert
Check the 3.5pi headest FPCB
BtoB connector or change that FPCB
to new one.
No
Yes
START
Check the left signal and
detectionline became short when
headset inserted (TP1)
No
END
Change the P-channel MOCFET
Detecting headset insert well?
Change the TWL6040.
Detecting headset insert well?
No
Change the mainboard
END
Yes
END
Yes
Yes
No
Check the left signal and detection signal that be
shorted when headset inserted, also confirm Ear MIC
Signal, HIGH
Ear Conn
EAR MIC
GND
EAR_R
EAR_L
L_Detect
TP1