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3. TROUBLE SHOOTING
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Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Check the headset MIC bias. (FB6610)TP3
In case of you can’t check the headset signal lines (FB6611, FB6612)TP1
Can heard sound but sound is abnormal, check (C6922, C6923)TP2
R6620
DNI
0
R6615
ZD6602
0
R6619
0
R6616
+VPWR
1K
R6617
R6923
330K
2.4M
R6924
1u
C6616
C6614
DNI
U6600
FSA5157L6X
4
3
5
2
6
1
S
B1
VCC
GND
A
B0
0
R6921
470p
C6922
470p
C6923
1000
FB6611
FB6612
1000
1n
C6610
FB6610
1800
J6610
6
1
4
4D
5
M5-MIC
M4-DETECT
M4-L
M1-R
M6-GND
ZD6601
DNI
C6615
470p
C6611
33p
L6610
100n
C6613
DNI
1.2K
R6613
ZD6605
ZD6603
DNI
ZD6604
HPH_R_OUT
HPH_L_OUT
HPH_REF
FM_ANT
EAR_MIC_JACK
MIC_BIAS_1
EAR_SENSE_JACK
MIC_IN2_N
Rev.1.0
1005 -> 0603(DR)
Rev.1.0
1005 -> 0603(DR)
0826_Change
AUX CABLE Line
Rev.C
Rev.C
Rev.C
Rev.C
Rev.D
Rev.D
Rev.D
GND Close to EarJack
0801_change
0831_change
FB6611, FB6612(TP1)
C6922, C6923(TP2)
FB6610(TP3)