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4.10 Earphone Trouble
TEST POINT
CIRCUIT
HOOK_DET
HS_MIC_N
HS_MIC_P
C305
27p
R350
18
HP_A_LOUT
L302
1800
R324
18
HP_A_ROUT
L303
1800
C328
C329
47p
47p
USB_P
LGE Internal Use Only
USB_N
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Figure 4.10.1
R12
MICN1
T12
MICP1
R13
MICN2
T13
MICP2
P12
VMIC
P13
VUMIC
R10
ACD
P11
AGND
T10
VREF
A16
NC1
T16
NC2
A1
NC3
VHSMIC
T1
NC4
F9
VDDFS
R300
1.5K
C302
0.1u
R301
2.2K
C303
0.1u
C306
C304
C307
27p
10u
47p
ECTH0005601
298D106X0010M2T
USB_DP
USB_DM
R310
47
JACK_DET
C326
C327
DNI
DNI
RPWRON
DSR
R312
47
UART_TX
R313
47
UART_RX
U301 STF203-22-TC
6
1
USB_DP
D+IC
D+
5
2
VBUS
GND
4
3
D-IC
D-
USB_DM
EDTY0006501
C303
C131
C132
C133
JACK_DET
DNI
47p
47p
C137
220n
VBUS_USB
1V81_VDD
VCHG
L301
1800
RPWRON
DSR
UART_TX
UART_RX
C320
4.7u
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 91 -
4. TROUBLE SHOOTING
R300
R301
L301
R30
CN300
2
MIC_N
VHSMIC
VMIC
MIC_P
HS_MIC_N
HS_MIC_P
C134
C140
47p
1000p
0.015u
C301
L300
1p
270nH
VBAT
CN300
R302
21
2.2
19
1
2
2 : Headset MIC
3
4
4 : HSO_L
5
5 : HSO_R
6
6 : USB+
7
7 : USB-
8
8 : JACK_D
FB300
9
SFEY0007101
10
9,10 : BATT
ICVFP10181E301FR
11
11 : R/ON
12
OUT
IN
12,13 : CHG
13
GND2
GND1
14
14 : DSR
15
15 : VUSB
16
16 : D/ TX
17
17 : D/ RX
18
20
22
GU041-18P-E1000
ENRY0006801
LGE Internal Use Only
C160
1000p
FM_ANT
C300
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