LG -D175F Service Manual page 131

0831_change
EAR_MIC_JACK
FB6611 1000
HPH_L_OUT
EAR_SENSE_JACK
1000
FB6612
HPH_R_OUT
C6610 1n
FM_ANT
R6921 0
0801_change
GND Close to EarJack
HPH_REF
C6615
470p
MIC_BIAS_1
MIC_IN2_N
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
LGE Internal Use Only
FB6611, FB6612(TP1)
C6922, C6923(TP2)
C6922 C6923
470p 470p
Rev.C
L6610
100n
Rev.C
0826_Change
AUX CABLE Line
Rev.1.0
1005 -> 0603(DR)
Rev.D
C6611
33p
R6617 1K
R6613 1.2K
C6614
Rev.C
C6613
DNI
DNI
R6924
2.4M
R6923
Rev.D
U6600
1
330K
S
2
+VPWR
VCC
3
A
C6616
1u
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3. TROUBLE SHOOTING
FB6610(TP3)
1800
FB6610
DNI DNI
Rev.D
FSA5157L6X
6
B1
5
GND
R6619
4
B0
0
R6620
DNI
Rev.1.0
1005 -> 0603(DR)
Rev.C
Only for training and service purposes
5
M5-MIC
4
M4-L
4D
M4-DETECT
J6610
1
M1-R
6
M6-GND