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Flow Chart of Troubleshooting
10-
27
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C339
C346
C344
EN
GND 9
13
D
N
G
8
IN
VOUT
5
C1+
C1-
4
6
C2+
C2-
7
10
D1
11
D2
D3 12
D4
1
2
U301
3
R319
V_LED+
C340
C342
C341
C338
02
3
R
C345
ZD301
C343
VBAT
BL_CONT
LED1-
LED2-
LED3-
LED4-
C353
C349
C350
C356
C351
C348
VIB_3.3V
C352
6 6
7
7
8
8
9
9
4
4
40 40
41
41
42
42
43
43
44
44
45
45
5 5
32 32
33 33
34 34
35 35
36 36
37 37
38 38
39 39
25
25
26 26
27 27
28 28
29 29
3
3
30 30
31 31
18 18
19 19
2
2
20 20
21 21
22 22
23 23
24 24
10 10
11 11
12 12
13 13
14 14
15 15
16 16
17 17
SLC300
1
1
C354
C347
VCCD_2_9
V_LED+
V_KEY
C355
LCD_REN
RCV_P
LCD_WEN_F
KEY_ROW(0)
KEY_COL(1)
KEY_ROW(2)
RCV_N
LED2-
LED4-
KEY_ROW(1)
KEY_COL(0)
KEY_COL(2)
PWR_ON
LED1-
LED3-
LCD_RST_F
LCD_D(15)_F
LCD_D(13)_F
LCD_D(11)_F
LCD_D(9)_F
LCD_D(7)_F
LCD_D(5)_F
LCD_D(3)_F
LCD_D(1)_F
MLCD_CS_F
LCD_ADS_F
LCD_D(14)_F
LCD_D(12)_F
LCD_D(10)_F
LCD_D(8)_F
LCD_D(6)_F
LCD_D(4)_F
LCD_D(2)_F
LCD_D(0)_F