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Flow Chart of Troubleshooting
9-25
H
L
H
DCS_RX
L
-
BAND_SEL
H
-
-
-
L
-
DCS_TX
H
H
PON_PA
EGSM_TX
L
H
MOD_STANDBY
TX Module S/W Control Circuit
EGSM_RX
RF Part
STAND BY
RX_SEL
H
H
L
H
H
L112
C124
L113
L111
VBAT
C114
C120
C117
1 IN1
IN2
4
OUT1 8
9
OUT1
OUT2 6
7
OUT2
F100
G
2
3
G
5
G
G
0
1
C115
L101
C116
L114
C122
P
M
A
R
V
NC
C
N
9
1
RFIN_HB
2
RFIN_LB
4
8
1
0
X
R
7
1
1
X
R
N
E
_
X
T
8
1
1
T
T
A
B
V
7
D
N
G
5
D
N
G
D
N
G
6
3
1
D
N
G
20
GND
9
0
L
R
T
C
P
G
1
L
R
T
C
P
G
0
1
2
1
C
N
16
15
ANT
1
D
N
G
1
2
D
N
G
D
N
G
2
2
3
2
D
N
G
D
N
G
4
2
14
GND
3
0
0
1
M
A
P
L109
ANT104
L110
C110
C112
C119
G
ANT103
RFS100
2
A
C
1
G
3 4
C121
L103
C109
C118
A
P
_
N
O
P
EGSM_TX
DCS_TX
L
E
S
_
D
N
A
B
L
E
S
_
X
R
DCSRX
EGSMRX
DCSRX_N
EGSMRX_P
EGSMRX_N
EGSMRX
DCSRX
RAMP
DCSRX_P
* CLK
* F-RDY/R-WAIT#
* AVD#
BASEBAND
C225
VSIM_3.0V
R206
8
0
2
C
VRF_2.85V
VPERM_3.0V
VANA_2.85V
VGPIO_2.8V
VGPIO_2.8V
9
0
2
R
C228
GPIO1
W4
UART1_RD
W5
UART1_RTS
W6
LDO_EN
W7
ICHGN
W8
ICHGP
W9
PMU_VANA
W14
PMU_VIO
W15
EAR_OUT_N|R
W16
EAR_OUT_P|L
W17
HSET_OUT_N
W18
HSET_OUT_P
W19
GPIO5
W2
GPIO20
W3
UART1_CTS
V7
POK_OUT
V8
ACC_DET_IN
V9
GPIO40
W1
GATE_SW
W10
SWCORE
W11
PMU_VPERM
W12
PMU_VRF
W13
VCM_OUT
V17
D
U
A
_
D
N
G
8
1
V
INTMIC_IN_P
V19
GPIO2
V2
GPIO6
V3
GPIO7
V4
UART1_TD
V5
THERM_IN
V6
GPIO41
V1
VCHG
V10
SWCORE
V11
E
R
O
C
V
2
1
V
M
R
E
P
V
_
D
D
V
3
1
V
PMU_VSIM
V14
PMU_VMEM
V15
VCM_OUT
V16
PWM_OUT2
T6
PWM_OUT0
T7
POK_IN
T8
M
P
P
G
_
D
D
V
9
T
SSI_DATA
U1
EXTMIC_BIAS
U18
INTMIC_IN_N
U19
SSI_OUT
U2
V
R
D
_
D
U
A
_
D
N
G
4
1
T
V
R
D
_
D
U
A
_
D
N
G
5
1
T
B
U
S
_
D
N
G
6
1
T
INTMIC_BIAS
T18
EXTMIC_IN_P
T19
SSI_SEL2
T2
NRESET
T4
PWM_OUT1
T5
CLK_BT
R7
AUX_POK
R8
E
S
N
E
S
_
T
A
B
V
9
R
SSI_CLK
T1
S
N
S
_
T
A
B
V
_
D
N
G
0
1
T
C
D
C
D
_
T
A
B
V
1
1
T
C
D
C
D
_
T
A
B
V
2
1
T
V
R
D
_
D
U
A
_
D
N
G
3
1
T
V
R
D
_
OI
D
U
A
_
D
D
V
5
1
R
OI
D
U
A
_
D
D
V
6
1
R
AUXAUD_IN_R
R18
EXTMIC_IN_N
R19
TMS
R2
TEST
R4
OI
V
_
D
D
V
5
R
A
P
G
D
G
_
D
N
G
6
R
RTCK
P4
OI
V
_
D
D
V
5
P
SSI_SEL0
R1
GATE_REG
R10
E
R
O
C
V
_
D
N
G
1
1
R
A
N
A
_
T
A
B
V
2
1
R
A
N
A
_
T
A
B
V
3
1
R
V
R
D
_
OI
D
U
A
_
D
D
V
4
1
R
E
R
O
C
V
_
D
N
G
8
N
E
R
O
C
V
_
D
N
G
9
N
TDO
P1
G
B
V
_
D
N
G
5
1
P
G
B
V
6
1
P
AUXAUD_IN_L
P18
HKSW_DET1
P19
TCK
P2
M
P
P
G
_
D
D
V
5
1
N
AUXADC1
N16
CLK_XOUT
N18
HKSW_DET2
N19
KEYOUT3
N2
TDI
N4
OI
V
_
D
D
V
5
N
E
R
O
C
V
_
D
N
G
7
N
E
R
O
C
V
_
D
D
V
7
M
E
R
O
C
V
_
D
D
V
8
M
E
R
O
C
V
_
D
D
V
9
M
KEYOUT2
N1
E
R
O
C
V
_
D
N
G
0
1
N
E
R
O
C
V
_
D
N
G
1
1
N
E
R
O
C
V
_
D
N
G
2
1
N
E
R
O
C
V
_
D
N
G
3
1
N
E
R
O
C
V
_
D
D
V
3
1
M
A
P
G
D
G
_
D
N
G
5
1
M
PA_RAMP
M16
C
T
R
_
T
A
B
V
8
1
M
AUXADC0
M19
KEYOUT1
M2
NTRST
M4
E
R
O
C
V
_
D
N
G
5
M
E
R
O
C
V
_
D
N
G
5
L
E
R
O
C
V
_
D
D
V
7
L
E
R
O
C
V
_
D
D
V
8
L
E
R
O
C
V
_
D
D
V
9
L
KEYOUT0
M1
E
R
O
C
V
_
D
D
V
0
1
M
E
R
O
C
V
_
D
D
V
1
1
M
E
R
O
C
V
_
D
D
V
2
1
M
E
R
O
C
V
_
D
D
V
2
1
L
E
R
O
C
V
_
D
D
V
3
1
L
FE_CTRL3
L15
CLK_32K_OUT
L16
UART0_RD
L18
XTAL_32K_1
L19
KEYIO1
L2
KEYIO2
L4
KEYIN2
K4
OI
V
_
D
D
V
5
K
E
R
O
C
V
_
D
D
V
7
K
E
R
O
C
V
_
D
D
V
8
K
E
R
O
C
V
_
D
D
V
9
K
KEYIO0
L1
E
R
O
C
V
_
D
D
V
0
1
L
E
R
O
C
V
_
D
D
V
1
1
L
E
R
O
C
V
_
D
D
V
1
1
K
E
R
O
C
V
_
D
D
V
2
1
K
E
R
O
C
V
_
D
D
V
3
1
K
FE_CTRL2
K15
GI
D
F
R
_
D
D
V
6
1
K
UART0_TD
K18
XTAL_32K_2
K19
KEYIN1
K2
SSI_SEL1
J2
GPIO57
J4
2
OI
V
_
D
D
V
5
J
E
R
O
C
V
_
D
N
G
7
J
E
R
O
C
V
_
D
N
G
8
J
E
R
O
C
V
_
D
N
G
9
J
KEYIN0
K1
E
R
O
C
V
_
D
D
V
0
1
K
E
R
O
C
V
_
D
N
G
0
1
J
E
R
O
C
V
_
D
N
G
1
1
J
E
R
O
C
V
_
D
N
G
2
1
J
E
R
O
C
V
_
D
N
G
3
1
J
FE_CTRL0
J15
FE_CTRL1
J16
PCM_SYNC
J18
PCM_CLK
J19
SIM_CLK
H19
F
R
_
D
N
G
2
H
GPIO38
H4
GPIO10
H5
E
R
O
C
V
_
D
N
G
7
H
E
R
O
C
V
_
D
N
G
8
H
E
R
O
C
V
_
D
N
G
9
H
GPIO39
J1
F
R
_
D
N
G
1
H
E
R
O
C
V
_
D
N
G
0
1
H
E
R
O
C
V
_
D
N
G
1
1
H
E
R
O
C
V
_
D
N
G
2
1
H
MI
S
V
_
D
D
V
3
1
H
I
D
_
M
C
P
H15
PCM_DO
H16
SIM_DATA
H18
DATA0
G18
DATA8
G19
F
R
_
D
N
G
2
G
GPIO8
G4
OI
_
F
R
_
D
D
V
5
G
E
R
O
C
V
_
D
N
G
7
G
E
R
O
C
V
_
D
N
G
8
G
E
R
O
C
V
_
D
N
G
9
G
F
R
_
D
N
G
5
F
RFIL_N
G1
E
R
O
C
V
_
D
N
G
0
1
G
ADDR11
G11
ADDR1
G12
MI
S
V
_
D
N
G
3
1
G
ADDR20
G15
SIM_RST
G16
ADDR9
E9
RFIL_P
F1
ADDR18
F15
ADDR4
F16
DATA9
F18
DATA1
F19
F
R
_
D
N
G
2
F
F
R
_
D
D
V
4
F
DATA10
E18
DATA2
E19
F
R
_
D
N
G
2
E
F
R
_
D
N
G
4
E
F
R
_
D
N
G
5
E
F
R
_
D
N
G
6
E
F
R
_
D
N
G
7
E
E
R
O
C
V
_
D
N
G
8
E
RFID_N
E1
ADDR6
E10
ADDR5
E11
NBE1
E12
NOE
E13
ADDR2
E14
ADDR19
E15
ADDR3
E16
DATA3
D19
F
R
_
D
N
G
2
D
F
R
_
D
N
G
4
D
F
R
_
D
N
G
5
D
F
R
_
D
N
G
6
D
F
R
_
D
N
G
7
D
E
R
O
C
V
_
D
N
G
8
D
ADDR10
D9
ADDR7
D10
NBE0
D11
NRESET_OUT
D12
ADDR12
D13
ADDR13
D14
M
E
M
V
_
D
D
V
5
1
D
ADDR17
D16
DATA11
D18
XTAL_SHLD
B7
XTAL_SHLD
B8
E
R
O
C
V
_
D
N
G
9
B
RFIP_N
C1
DATA15
C18
DATA4
C19
F
R
_
D
N
G
2
C
RFID_P
D1
DATA12
B17
DATA13
B18
DATA5
B19
F
R
_
D
N
G
2
B
F
R
_
D
N
G
3
B
F
R
_
D
D
V
4
B
XTAL_SHLD
B5
XTAL_SHLD
B6
RFIP_P
B1
ADDR8
B10
NWE0
B11
NCS1
B12
ADDR15
B13
ADDR22
B14
M
E
M
V
_
D
D
V
5
1
B
ADDR21
B16
RFOL
A2
F
R
_
D
N
G
3
A
F
R
_
D
D
V
4
A
XTAL_SHLD
A5
XTAL_26M_2
A6
XTAL_26M_1
A7
XTAL_SHLD
A8
E
R
O
C
V
_
D
N
G
9
A
NCS0
A12
M
E
M
V
_
D
D
V
3
1
A
M
E
M
V
_
D
D
V
4
1
A
M
E
M
V
_
D
D
V
5
1
A
ADDR14
A16
DATA6
A17
DATA7
A18
DATA14
A19
UCP201
NC
1
NC
2
RFOH
A1
ADDR16
A10
NCS2
A11
LCD_DET
VANA_2.85V
C227
7
0
2
C
0
0
2
L
VBAT
VGPIO_2.8V
R207
GHG_SW
R211
R208
VBAT
D201
VCORE_1.25V
3
1
OSC201
2
4
VMEM_1.8V
VCORE_1.25V
VBG
TH200
R205
3
2
1
OSC200
L20 1
D200
VBAT
R204
FM_SCL
FM_SDA
LCD_BL_EN
FM_RST
A(17:22)
A(18)
A(19)
A(20)
A(21)
A(22)
A(17)
TORCH_EN
KEYOUT(0)
RX_SEL
A(23)
VF
SYSRST
RSTON
EGSMRX_P
EGSMRX_N
DCS_TX
EGSM_TX
DCSRX_P
DCSRX_N
VCM_OUT
OEn
WEn
RTCK
TMS
TCK
TDO
TRST_N
TDI
SIM_DATA
SIM_CLK
SIM_RST
VCORE_1.25V
RAMP
CHG_REG
VCHG_P
AUX_DET
32KHz_DIGIT
NCSRAM
NCSFLASH
UB
LB
VPERM_3.0V
VANA_2.85V
VRF_2.85V
VSIM_3.0V
VMEM_1.8V
VGPIO_2.8V
BAND_SEL
NCS0
ONKEY_2
ONKEY_1
ICHGN
ICHGP
UART1_TD
UART1_RD
UART1_CTS
UART1_RTS
UART0_TD
UART0_RD
MIC_BIAS
EAR_P
EAR_N
SPK_P
SPK_N
EAR_SW_REF
EAR_SW
FM_L
FM_R
JIG_ON
KEYOUT(0:3)
KEYOUT(3)
KEYOUT(2)
KEYOUT(1)
KEYIN(0:2)
KEYIN(2)
KEYIN(1)
KEYIN(0)
KEYIO(0:2)
KEYIO(2)
KEYIO(1)
KEYIO(0)
MIC_P
MIC_N
EAR_MIC_P
EAR_MIC_N
MOD_STANDBY
A(13)
A(14)
A(15)
MD(0:15)
MD(0)
MD(1)
MD(2)
MD(3)
MD(4)
MD(5)
MD(6)
MD(7)
MD(8)
MD(9)
MD(10)
MD(11)
MD(12)
MD(13)
MD(14)
MD(15)
KEY_LED_ON
FM_INT
VIB_EN
PON_PA