LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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4.14 Bluetooth Trouble
Check U502 (buffer)
Check X101
START
Check TP1=2.85V ,
TP2=1.8V,TP4=1.8 V?
TP1,TP4 : Check U202(PMB6821)
TP2 : U103 (PMB8868)
Check TP3=26MHz ?
NO
NO
YES
YES
Check TP11=32.768KHz ?
NO
Check TP6,7,8,9 Signal exist?
(when BT ON)
YES
NO
Check U103 (PMB8868)
Bluetooth works well?
Change the main board
END
Check TP10
Tx, Rx power exist?
NO
Check FL403 and ANT401
NO
YES
YES
YES
Содержание KP275
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