Table of Contents
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Flow Chart of Troubleshooting
ONKEYN
C409
R401
C411
VBAT
C412
V400
+VDD_RX_TX_2V8
C413
L402
+VCC_SYN_2V8
C415
+VDD_BT_1V8
C416
C417
+VDD_CAM_2V8
C424
+VDD_IO_HIGH_2V9
C426
+VDD_IO_LOW_1V8
C427
MIC_BIAS_2V1
RSTON
IT_PMU
SIMIO
OSC400
4
3
1
2
25
26
27
28
24
RF2VDD
23
RF12VBAT
22
RF1VDD
21
D1VDD
20
LPD1VBAT
19
LPVDD
18
HCVBAT
17
HCVDD
16
D2VDD
15
IOD2VBAT
14
IOVDD
13
_REC2
12
11
10
C425
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C407
C408
R404
BAT400
RB414II06N
C414
29
30
31
32
33
34
35
36
37
SCP
38
SCN
R402
39
D3VDD
40
SIMD3VBAT
41
SIMVCC
42
SIMIOCD
43
U400
SIMCKCD
44
_SIMRSCD
45
SIMEN
46
GPO3
LCD_BL_ON
47
R403
GPO2
48
GPO1
49
GND
GND 50
51
GND
GND 52
53
NC
NC 54
9
8
7
6
5
4
3
2
1
T400
7-2
+VDD_SD_2V9
+VDD_IO_LOW_1V8
SIM_VCC
SIM_IO
SIM400
SIM_CLK
6 6
1
1
5
2
2
5
SIM_RST
4 4
33
G
G
G
G
10
9
8
7
C423
C418
C419
C420
C421
BACKLIGHT
AUX_ON
SCL
SDA
32KHz_DIGIT
PON_TX
REF_ON
SIMRST
SIMCLK
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