LG GD910 - Page 103

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Only for training and service purposes
5. Trouble shooting
GD910 service manual
Check Bias Voltage
C309/C316
START
NO
YES
Check PMIC
(U200)
Check BT_VCXO_EN
NO
Check PMIC
(U200)
YES
Check 26MHz
at R425
YES
NO
BT_Reset_N
?
YES
NO
Check U102 and Replace
Bluetooth on is OK?
YES
NO
Re-download SW and try again
END
Check U409,X400,U404 And Replace
Checking Flow