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Level 3 Repair
8-23
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8-3-9. EAR_MIC Part
Check the EAR connector is
demaged.
(TP : L402 signal is on.)
Resolder the L402 or Replace the EAR
connector(EAR400)
END
No
Yes
No
Resolder the R421 or Replace the UCP200.
Check the Ear_Mic voltage is on.
(TP : R421 = 2.2V)
Check the signal paths
Are signals on?.
(TP : C434, C423, R431, R422)
No
Resolder the C434, C423, R431, R422
Check the EAR phone.
No
Check the UCP200 is demaged.
Resolder the UCP200 using the heatgun.
Ear_Microphone is not working.
Yes
Yes
Yes
Yes
Yes