4. TROUBLE SHOOTING
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ͽͶ͑ͺΟΥΖΣΟΒΝ͑ΆΤΖ͑ΟΝΪ
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4. TROUBLE SHOOTING
CIRCUIT
U
.
....
.
TP
1 2
3 4
5
TP06
.
..
..
TP07
TP301
I
N
D
70
3
R
80
3
R
K0
01
TP302
TP303
TP304
TP305
R320
100
2.2u
C301
ZD311
ZD310
1V8_VDD
1V8_VDD
CN303
21
20
22
19
23
18
24
17
25
16
26
15
27
14
28
13
29
12
30
11
31
10
32
9
33
8
34
7
35
6
36
5
37
4
38
3
39
2
40
1
15pF
FL301
01
5
6
4
7
3
8
2
9
1
INOUT_A1
INOUT_B1
INOUT_A2
INOUT_B2
INOUT_A3
INOUT_B3
INOUT_A4
INOUT_B4
1
G
2
G
15pF
FL302
01
5
6
4
7
3
8
2
9
1
INOUT_A1
INOUT_B1
INOUT_A2
INOUT_B2
INOUT_A3
INOUT_B3
INOUT_A4
INOUT_B4
1
G
2
G
FL303
15pF
01
5
6
4
7
3
8
2
9
1
INOUT_A1
INOUT_B1
INOUT_A2
INOUT_B2
INOUT_A3
INOUT_B3
INOUT_A4
INOUT_B4
1
G
2
G
1V8_VDD
TP307
VA301
VBAT
VMMC
1u
C313
C323
1u
LCD_RS
NLCD_MAIN_CS
LCD_DATA00
LCD_DATA01
LCD_DATA02
LCD_DATA03
LCD_DATA04
LCD_DATA05
LCD_DATA06
LCD_DATA07
LCD_VSYNC
NLCD_WR
LCD_ID
MLED1
MLED3
MLED2
MLED4
MLED5
LED_PWM
IF_MODE
IF_MODE
LCD_RESET
Maker
IF
Maker ID
SHARP
L
L
LCD DISPLAY
TP6
TP1
C329
1u
2.2u
C327
2.2u
C335
2.2u
C328
FM_LNA_EN_1
CAM_IO_1V8
CAM_D_1V8
CAM_A_2V8
U302
24
23
22
21
20
19
18
8
7
6
5
9
4
10
3
11
2
12
1
31 41 51 61 71
L
C
S
A
D
S
N
E
M
W
P
F
C
D
N
G
P
LDO1
N2
C
LDO2
N1
C
LDO3
P1
C
LDO4
P2
C
AGND
VIN
LDOIN
LED6
LED5
LED4
LED3
LED2
LED1
VOUT
C324
1u
C325
1u
VBAT
C326
2.2u
C336
1u
0.1u
C330
R318
100K
I2C_SCL
I2C_SDA
MLED1
MLED3
MLED2
LCD_BL_CTRL
MLED4
MLED5
LED_PWM
CHARGE PUMP
TP
TP3
TP4
TP5
TP7