LG GS290 Service Manual page 114

7. CIRCUIT DIAGRAM
12 11
L
K
AUDIO AMP SUB SYSTEM & SIGNAL DISTRIBUTOR
VIO_2V62
J
EAR_P C364 220n
EAR_N C365 220n
C347 220n
FM_AUDIO_L
C350 1u
BB_SND_L
C351 1u
BB_SND_R
C321
220n
FM_AUDIO_R
I
I2C_SDA
I2C_SCL
C361 C313
0.1u 4.7u
R348
0
H
G
Receiver & Speaker
VBAT
U306 FSA2268UMX L315
10 8
SPK_RCV_P 1B0 1A
68n
BLM15BD182SN1D
1 7
FM_SPK_OUTP 1B1 S1
L316
F
2 5
SPK_RCV_N 2B0 2A
68n
BLM15BD182SN1D
3 6
FM_SPK_OUTN 2B1 S2 RCV_FM_SEL
4 9
GND VCC
C381
2.2u
E
D
VBAT
BU31TD2WNVX U302
4 1
VIN VOUT
3 2
VIB_EN STBY GND
C331
C330 1u
1u
C
B
VIB_PWM 1
IN
B
A
12 11
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
10 9 8
VBAT
MIC
C311 C320
0.1u 2.2u
FB305 C373 22n
MAIN_MIC_P
E1 A4
INM+ LSOUT+ SPK_RCV_P BLM15AG121PN1
D1 A3
INM- LSOUT- SPK_RCV_N
FB306
C374 22n
C1 D2 MAIN_MIC_N
INL SET
BLM15AG121PN1
U304
C2
INR LM49151TLX
E3
HPL HSO_L L303
VMIC_P
C3 100n
BYPASS
A1
I2CVDD C307 C322 C318 C314
B2
SDA 47p 1u
B3 E2 27p 27p
SCL HPR HSO_R
VMIC_N
C343 C342
C363 R330
C362 27p 27p
C319 0.1u 100K
2.2u
2.2u
EAR_GND
BATTERY CONNECTOR
VBAT
FB308 CN301
1800
1
C338
39p
FB309 2
1800
R312
BRS-181213SL08-P
VIO_2V62
1K
C310 C336 C332 C337
10p 27p 47p 2.2u
C349
100p
C333 C341 R346
VA305 VA303 56K
22p 22p (1%)
EVLC5S0250 EVLC5S0250
BAT_ID
R347
56K
(1%)
Vibrator
BACKUP BATTERY
C316 10n
RTC_2V11
R310
100K
U303 TPA6202A1ZQVR
R311
C3 A3
IN- VDD
51K VB301
R315 L307
C2 B3 1
IN+ VO+ M300
51K 100n
B1 A1 L301 2
_SHUTDOWN VO-
100n
C1 B2
BYPASS GND
C355 C325
C
OUT 1u
10n
Q300
KRC402E
2
E GND
R318
100K
10 9 8
7 6 5
VIO_2V62
JACK_DETECT
L309
HSO_R 100n
MIC300
L308
1
OUT HSO_L
100n
2
G1
3
G2
4
G3
5
PWR
6
G4
C358 C306
SPM0410LR5H-QB
270p 270p
VA300 VA302
EAR_GND
HOOK_DETECT
C315
120p
MIC_GND
HS_MIC_N
HS_MIC_P
CN300
HSBC-3PT25-19N
1
2 4
3
FM Radio(LNA)
VBT_2V65
C370
U305 47n
BGB707L7ESD
1 6
VCC C_A
C371 47n
GS290_C-CLIP 2 5 TP313
L313 BIAS_OUT ON_OFF FM_LNA_CTRL
R304 R309
C366 330p 270n C369 330p
1 3 4
FEED RF_IN RF_OUT FM_ANT
1 270n 2 100n
C384
ANT303 D300 2
VA308
22p
EVLC18S02015
EDTY0008606
1
C368
R342
680
330p
7 6 5
- 115 -
4 3 2
3.5phi HEADSET
C339 1n
FM_ANT
EAR_GND
J300
FB303
BLM15BD182SN1D
M6_GND
1800 M1_R
ASSIST
M3_DETECT
FB304 M4_L
BLM15BD182SN1D
M5_MIC
KJA-PH-4-0171
1800
VA309
R334 VA304 VA306 VA307
10K
EVLC5S02100
VIO_2V62
U300
NCS2200SQ2T2G
5 VIN-
4
R319 1 VCC
47 OUT 3 VIN+
GND
2
VAUDB_2V5
C354
560p R324
C324 22n
C344 2.2K
10p
C357 22n
C356
C353
560p 2.2u
EAR_GND
FM Radio & Bluetooth_BC7_CSR
VBAT
VBT_2V65
C375 C308 C312 C378
2.2u
2.2u 0.1u
0.1u
C379
C309 C377 C304
2.2u
2.2u 470n 2.2u
L319
FM_ANT
100n
L318 C376
D4
PCM2_IN
100n 27p PCM2_OUT B5
B6
PCM2_SYNC
PCM2_CLK C5
E1 F5
FM_RX PCM1_IN_SPI_MOSI
G6
PCM1_OUT_SPI_MISO
E2 G5
VSS_FM_AUDIO PCM1_SYNC_SPI_CS
PCM1_CLK_SPI_CLK F4
F1
FM_TX_P
UART_TX D6
ANT302 ANT301 FL300 G1 U301 D5
FM_TX_N UART_RTS
R302 LFB212G45SG8A166 UART_CTS E6
BC7820
C382 15p B1 C6
BT_RF UART_RX
IN OUT
0
GND1 GND2
C302 C1 D3 C301
VSS_BT_RADIO_BAL AUDIO_OUT_L
C303
1.5p AUDIO_OUT_R D2
PIO_2_CLK_REQ_OUT E3
100K
E4
SPI_PCM_SEL
R301
F3
PIO_3_CLK_REQ_IN
PIO_4 C3
R305
100K
C305 100p
CLK26M
R343 470
CLK32K
4 3 2
1
L
K
J
I
H
G
F
E
D
I2S2_SDO
I2S2_WS
I2S2_CLK
BT_PCM_OUT
BT_PCM_IN
BT_PCM_SYNC
BT_PCM_CLK
TP308 C
BT_UART_RX
BT_UART_CTS
BT_UART_RTS
TP311
BT_UART_TX
1u
FM_AUDIO_L
1u
FM_AUDIO_R
TP312
BT_CLK_REQ
BT_HOST_WAKEUP
B
A
1
LGE Internal Use Only