4. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Case A. Disable detected headset insert.
Ear Jack
Connector
R520 100p
L501
100n
R583
10
10
R584
ZD501 ZD502 ZD503 ZD504
C517
22n
22n
C518
C513
1n
1n
C514
R562
470K
47K
R569
D501
1800
FB503
J501
S/W_Detect
SPK_L
SPK_R
MIC
GND
1800
FB500
1800
FB502
L500
100n
1800
FB501
DNI
C510
R517
2.2K
R512
10K
DNI
R521
2.2u
C515
1.5K
R51
5
DNI
R579
+1V8_VIO_MTK
EARMIC_BIAS
HOOK_DETECT
HS_JACK_DET
EARMIC_P
EARMIC_N
EAR_R
EAR_L
FM_ANT
FM_RX_IN_N
HS_GND
MAIN GND
Close to 3.5pi ear-jack
LOW
HIGH(DEFAULT)
STATE
UNMATING
HS_JACK_DET
MATING
MAIN GND
Ear Jack
Connector