LG GD910 Service Manual page 103

5. Trouble shooting
Checking Flow
LGE Internal Use Only
START
Check Bias Voltage
C309/C316
YES
Check BT_VCXO_EN
YES
Check 26MHz
at R425
YES
BT_Reset_N
?
YES
Bluetooth on is OK?
YES
END
Check PMIC
NO
(U200)
Check PMIC
NO
NO
Check U409,X400,U404 And Replace
NO
Check U102 and Replace
NO
Re-download SW and try again
- 104 - Copyright © 2009 LG Electronics. Inc. All right reserved.
GD910 service manual
(U200)
Only for training and service purposes