
- 209 -
Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
6. CIRCUIT DIAGRAM
C4300
120p
EUSY0407301
U4300
RT9718L
9
5
4
6
3
7
2
8
1
VIN1
VOUT2
VIN2
VOUT1
OVPFB
GND
WRN
EN
PGND
VBUS_USB_OVP_IN
VBUS_USB_IN
<4-3-2_OVP_MAX14528> REV.0.4
C8013
1u
L8001
1u
D8000
+VPWR
C8015
10u
U8001
B4
C1
A3
A4
E3
D3
E2
E1
B3
B2
A1
D2
A2
E4
B1
D4
D1
C4
C3
C2
TX
STROBE
VIN
LED1_B
PWM
LED2_F
LX
B
OUT_F1
SCL
LED1_F
OUT_F2
LXF2
LED2_B
OVP_B
SDA
GND3
GND1
LXF1
EN
GND2
10u
C8014
10u
L8000
R8004
DNI
DNI
R8003
ZD8004
EAV62175401
LD8000
2
1
COMMON_I2C_SCL
COMMON_I2C_SDA
TX_GTR_THRESH
FLASH_STROBE_TRIG
LCD_BL_EN
LCD_LED_A
LCD_LED_C
LCD_PWM
Width : 0.3mm
Width : 0.3mm
<4-4-3_LCD_Backlight_IC_RT8542> REV_0.3