LG U300 Service Manual page 146

7. CIRCUIT DIAGRAM
LCD BackLight/Camera Flash LED/LDO
MAX8631XETI
U500
1 23
+VPWR PIN C1P
2
IN C500
C501 1u
22
10u C1N
3 26
GND C2P
24
PGND C503
29
BGND 1u
27
C2N
25
OUT
20
LCD_BACK_EN ENM1
19
ENM2
21 16
FLED_ON ENF M1
18 15
CAM_PWR_EN ENLDO M2
28 14
P1 M3
17 13
P2 M4
12
F1
11
F2
8 10
SETM F3
9
F4
7
SETF
4
LDO1
6 5
REFBP LDO2
EUSY0263101
C508 C509 C510
0.01u 1u 1u
CAM_HALL_IC
U501 TK60012BM5
1 6
VREG_MSMP_2.7V VDD IO_VDD
2 5
GND1 GND2
3 4
NC OUT
CAM_SENSE
C518
10p
MICBIAS
C519 C526
10u
47p
MIC
SP0102BE3
5
G3
U502 4 C527 22n
PWR MIC1N
3
G2
2
G1
C528 22n
1
OUT MIC1P
C534 C535 RCV-
NA NA
RCV+
NA NA
R524 R525
R621 C537 0.1uF
R527 3.9K
MID_SPK-
0
NA C606
VREG_5V
1uF
C540
SPK_AMP_EN
R622 C543 0.1uF
R534 3.9K
MID_SPK+
0
NA C607
CAM
CONNECTOR
CN500
C502
14-5602-024-000-829
10u
24 1
23 2
CAM_DATA(7)
22 3
CAM_DATA(6)
21 4
CAM_DATA(5)
WLED_PWR
20 5
CAM_DATA(4)
19 6
CAM_DATA(3)
18 7
CAM_DATA(2)
17 8
WLED_1 CAM_DATA(1)
HB-1M1005-600JT 16 9
WLED_2 CAM_DATA(0)
FB502 15 10
WLED_3 CAM_PCLK
14 11
WLED_4 CAM_RESET_N
13 12
FLED1 CAM_P_DOWN
FLED2
FLED3
VREG_CAM_2.7V
VREG_CAM_1.8V VA503 VA504 VA505
EVLC18S02015 EVLC18S02015 EVLC18S02015
C511
0.1u
DAUGHTER_HEADSET
VREG_MSMP_2.7V
10u C513
R507
VREG_MSMP_2.7V VREG_MSMP_2.7V
2.2K
R510 10K
CN501
R511 10K R512
13
15 R514 2.2K
17
1
2
3
4
5 C515 33u R516 0
C516 33u R517 0
6
7
8
9
10
11
12
14
16
C521 C523 C524 C525
18
10p 10p 47p 47p
C-1827541
R624 10
Audio AMP
R623 10
C538 NA
NC2 COM2
A1 A3
R533 33K
NC1 COM1
C1 C3
U504 LM4898ITLX-NOPB
B1 C3 R530 0
VDD VO2 NO2 IN2
A4 A2
C1 A3 R531 0 R620
IN- VO1
NO1 IN1
C4 C2
A1 A2
IN+ BYPASS
NLAS4684FCT1G
C542
C2 B2 U503
SD_SEL SD_MODE 0.1u
B3
GND
R532 100K
R535 33K
C544 NA
- 147 -
HB-1M1005-600JT
CAM_MCLK
FB500
VA500
EVLC18S02015
2.2K R500
VREG_MSMP_2.7V
I2C_SCL
VA501
R502 2.2K
EVLC18S02015
VREG_MSMP_2.7V
I2C_SDA
VA502
CAM_VSYNC
EVLC18S02015
CAM_HSYNC
FB501
HH-1M1005-601JT
VREG_CAM_2.7V
C505 C506 C504
1u 0.1uF 10u
VREG_CAM_1.8V
C507
0.1u
I/O CONNECTOR
VREG_MSMP_2.7V
RESET_IN_N
10K
MICBIAS
C514
PM_ON_SW_N
2 1
+5V_PWR OUT IN
MIC2P
4 3
MIC2N G2 G1
HPL_L
NFM21PC105B1A3
HPL_R
EAR_SENSE_N
MULTI_ADC
HOOK_SENSE_N
USB_D-
UART_RXD
UART_TXD
USB_D+
USB_VBUS
UART_DCD_N
R518 NA
UART_RI
UART_RFR_N
UART_CTS_N
UART_DTR
R519 470K
VBAT_SENSE
VBATT
INSTPAR
PSD12-LF
D501
VBAT_TEMP
C539
L500 22p VREG_MSMP_2.7V
SPK+
L501
SPK-
C541
22p
0
SW_EN
A.S.CHO
07/MAR/2006
R506 0
CN502
25
R513 1K
1
BATT_ID
2
HF_MODE
3
DSR
4
PWR_+5V_1
5
PWR_+5V_2
6
ON_SW1
7
PCM_RXA_IN
8
PCM_CLK
9
PCM_SYNC
10
USB_RX
11
PCM_TXA_OUT
12
PWR_GND_1
13
RXD
14
TXD
15
USB_TX
16
USB_PWR
17
DCD
18
RI_TMS
19
PWR_GND_2
20
RFR_RTS
21
PWR_+4.2V_1
22
PWR_+4.2V_2
23
CTS
24
DTR
26
CN503
1
5
VBAT
2
4
3
R526
80.6K
VBAT_GND
U300
5/7
CAM & AUDIO & I/O
BLUETOOTH
U300_REV_1.1