Only For Training And Service Purposes - LG GT500 Service Manual

4. TROUBLE SHOOTING
4.9.6. Headset
TP8
TP4
C505 0.1u FB500
MIC2P
R505 10 FB501
HS_EAR_L
R506 10 FB502
HS_EAR_R
TP5
Close to MUIC
VDDE_1V8
APP_GP_USW_SCL
APP_GP_USW_SDA
APP_GP_USW_INT
Audio Subsystem
TP2
A4
C1N
C338 1u A5
C1P
C339 1u D1
EAR_R INA2
C342 1u D2
EAR_L INA1
C343 18000p C1
SPKRP INB2
C344 18000p C2
SPKRN INB1
B2
TP3
BIAS
B3
AMP_I2C_SDA SDA
C3
AMP_I2C_SCL SCL
1%
R322 15
D4
BEARP RXIN+
R323 15 B4
BEARN RXIN-
1%
C354
1u
Audio Subsystem
LGE Internal Use Only
VBAT
USB_DM
USB_DP
R501
0
APP_ACC_UART_RX
R503 0
APP_ACC_UART_TX
C507 TP602
C506 C508
22p
22p 22p
VBAT
C332
C333
1u
1u
A1
HPR
A2
HPL
U301
MAX9877AEWP_TG45
D5
OUT+
B5
OUT-
MUIC
D2 D5
BAT VB
A4 C5
DN1 COM1
A5 B5
DP2 COM2
U501
B3 B4
MAX14526EEWP_TCC6
U1 UID
A3
U2
R504
B1
RES
A1
MIC 2.2K
D4 D1
AUD1 CAP
D3
AUD2
C4
GND
A2 C3
ISET IC
If TI, then 10nF
If Maxim, then 4.7uF
C334
0.1u
HS_EAR_R
HS_EAR_L
USW_DM
USW_DP
SPK_RCV+
SPK_RCV-
- 106 - Copyright © 2009 LG Electronics. Inc. All right reserved.
VBUS
TP1
USW_DM
USW_DP
C504
R502 0
USW_ID 1u
VBAT
R507 DNI
TI : PD = USB, PU = UART
R508 DNI
MAXIM : NA = USB, PU = UART
C509
4.7u
TP6
TP7
6
8
10
CN501
12
14
1
2
3
4
USW_ID
5
7
9
11
13
15

Only for training and service purposes