LG LG-P715 - Page 121

4. TROUBLE SHOOTING
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Copyright © 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
4.3” WVGA MIPI 2Lane
LCD BACKLIGHT LED Boost
C5007
10u
10u
C5008
TP5001
ZD5001
FL5004
5
6
31
42
P2 P4
P1 P3
P6
P5
FL5002
10
9
84
73
62
51
P1
P5
P2 P6
P3 P7
P4 P8
G1
G2
VREG_LCD_2.8V
CN5002
13 12
14 11
15 10
16 9
17 8
18 7
19 6
20 5
21 4
22 3
23 2
24 1
DNI
ZD5003
DNI
ZD5002
VREG_MSME_1.8V
LCD_MIPI_CLK_N
LCD_MIPI_CLK_P
LCD_MIPI_D1_P
LCD_MIPI_D1_N
LCD_MIPI_D0_P
LCD_MIPI_D0_N
LCD_PWM
LCD_MAKERID
LED_A
LED_C
LCD_RESET_N
Test Points from Schematics
FL5002
FL5004
TP1
TP2
TP4
TP5
D5003
R5007
10K
R5010
10K
U5001
B2
D1
C3
A2
D3
C2
A3
D2
B3
A1
C1
B1
PWM
N/A_2
SDA
GND
OVP
SW
HWEN
ILED
SCL
IN
N/A_3
N/A_1
VREG_MSME_1.8V
D5009
DNI
DNI
D5008
10u
C5009
+VPWR
10u
L5001
1u
C5010
10K
R5006
LCD_BL_EN
LCD_BL_I2C_SCL
LCD_BL_I2C_SDA
LCD_PWM
LED_A
LED_C
X5R, 20%, 10V
X5R, 10%, 50V
TP3