LG GW520 Service Manual page 75

5. Trouble shooting
Circuit Diagram Circuit Diagram
FL300
SFEY0006501
NFM21PC105B1A3
MUIC_DM
MUIC_DP
MUIC_ID
C305
27p C311
22n
HS_MIC_N
C316
C315
2.2u
27p
C319
22n
HS_MIC_P
C321
27p
LGE Internal Use Only
VBUS_USB
CN301
R305 220
R306 220
HB-1T1005-221JT
ENRY0008101
GU071-5P-SD-E1500
TP2
2V62_VIO
R301 R302 C303
2.2K 100K
TP300
USB_DM
TP301
USB_DP
R304
UART_RX
UART_TX
2.2K
FB302
HSO_L
FB303
HSO_R
C324
HB-1M1005-102JT
120p
I2C3_SCL
I2C3_SDA
MUIC_INT
GW520 service manual
6
7
8
1 L300
270nH
2
3
4
5
9
10
11
MUIC
VBAT
R300
0
TP1
U301
0.1u
D2
BAT VB
A4
DN1 COM1
A5
DP2 COM2
B3
EUSY0371201
U1 UID
A3
MAX14526EEWP_TCC6
U2
RES
A1
MIC
D4
AUD1 CAP
D3
AUD2
GND
A2
ISET IC
- 76 - Copyright © 2009 LG Electronics. Inc. All right reserved.
FM_ANT
C314
10p
VBUS_USB
C306
0.1u
D5
C5
MUIC_DM
B5
MUIC_DP
VBAT
FB301 BLM15BD182SN1D
B4
MUIC_ID
C320
B1 R308 2.2K
56p
D1
C4
C3
Only for training and service purposes
RPWRON_EN
R310 R309
DNI 300K