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Flow Chart of Troubleshooting
R_ANT
VBAT
V_EXT_CHARGE_IF_5V
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15 15
16
16
17 17
18
18
19 19
20
20
NC 21
22
NC
23
NC
NC 24
25
NC
NC 26
NC 27
IFC500
HY20-AB0310
MES_BATT
+VDD_IO_HIGH_2.9V
+AVDD_2.6V
+VDD_SLEEP_2.9V
+VDD_USB_3.3V
+VDD_PLL_1.2V
C315
C317
PMU_INT_M
SIMOFFn
RSTON
REF_ON_PMU
PWREN2
32KHz_DIGIT
+VDD_KEY_3.3V
+AVDD_HFA_2.6V
+VDD_VIB_3.3V
L501
L503
C507
D502
R300
C303
R301
C300
C305
C308
C309
C310
C312
OSC301
1
OSCI
2
OSCO
3
_IRQ
4
SIMCKHC
5
_SIMRSHC
R304
6
SIMIOHC|_SIMOFF
7
_RSTHC
8
GPO3
9
GPO2
TP305
10
GPO1
11
PWREN1
TP306
12
PWREN2
13
VSS
57
VSS
C321
C330
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+VDD_IO_HIGH_2.9V
+VDD_USB_3.3V
R502
R500
C500
C501
R504
EARSPK_R
R506
EARSPK_L
EAR_SWITCH
C505
USBDP_M
USBDM_M
+VBUS_IF
R509
RXD1_IF
C506
AUX_ON_IF
TXD1_IF
VBAT
R302
39
VSS
38
VCHG
37
USBVIN
36
CHGCUR
R303
35
_REC2
PM300
34
_REC1
33
VBATSENSE
32
VISA
31
REFGND
30
REFC
C320
29
MICBIAS
28
_ONKEY
27
NTC
+VDD_IO_LOW_1.8V
L300
C323
9-6
L500
EARMIC_P
L502
EARMIC_N
10
9
GND
GND
JACK_IN
4 IN4
OUT4
8
IN3
OUT3
RXD1
3
7
AUX_ON
2 IN2
OUT2
6
TXD1
IN1
OUT1
1
5
F500
+VDD_IO_LOW_1.8V
C304
+VDD_SD_3.3V
C306
+SIMVCC_M
C307
+VDD_RX_TX_2.8V
C329
+VCC_SYN_2.8V
C311
1
BAT300
2
V_EXT_CHARGE_5V
+VBUS
C316
VBAT
AUX_ON
C318
C319
ONKEYN
SCL
SDA
VBAT
C322
+VDD_GSM_CORE_1.2V
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