Samsung S400i Service Manual
I-mode TELEPHONE
SGH-S400i
I-mode TELEPHONE
CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded View and Parts List
4. MAIN Electrical Parts List
5. PCB Diagrams
6. Block Diagrams
1. SGH-S400i Specification
1-1. GSM General Specification
GSM 900
Freq. Band[MHz]
Uplink/Downlink
ARFCN range
Tx/Rx spacing 45MHz 95MHz 80MHz
Mod. Bit
rate/
Bit Period
Time Slot
Period/Frame Period
Modulation
MS Power
GPRS
EDGE
GPRS 0.3GMSK 0.3GMSK 0.3GMSK
EDGE 8PSK 8PSK 8PSK
GPRS 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
EDGE 27~5dBm 26~0dBm 26~0dBm
880~915
925~960
0~124
&975~1023
270.833Kbps
3.692us
812.5Kbps
3.692us
576.9us
4.615ms
DCS1800 PCS1900
1710~1785
1805~1880
512~885 512~810
270.833Kbps
3.692us
812.5Kbps
3.692us
576.9us
4.615ms
1850~1910
1930~1990
270.833Kbps
3.692us
812.5Kbps
3.692us
576.9us
4.615ms
Power
Level
Sensitivity -102dBm -100dBm -102dBm
TDMA Mux 8 8 8
Cell Radius 35Km 2Km 2Km
GPRS 5pcl~19pcl 0pcl~15pcl 0pcl~15pcl
EDGE 8~19(c l a s s E2) 2~15(class E2) 2~15(class E2)
1-1
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SGH-S400i Specification
1-2. GSM TX power class
TX Power
control
level
5 33±2dBm
6 31±3dBm
7 29±3dBm
8 27±3dBm
9 25±3dBm
10 23±3dBm
11 21±3dBm
12 19±3dBm
13 17±3dBm
14 15±3dBm
15 13±3dBm
GSM900
TX Power
control
level
0 30±2dBm
1 28±3dBm
2 26±3dBm
3 24±3dBm
4 22±3dBm
5 20±3dBm
6 18±3dBm
7 16±3dBm
8 14±3dBm
9 12±4dBm
10 10±4dBm
DCS1800
TX Power
control
PCS1900
level
030±2dBm
128±3dBm
226±3dBm
324±3dBm
422±3dBm
520±3dBm
618±3dBm
716±3dBm
814±3dBm
912±4dBm
10 10±4dBm
16 11±5dBm
17 9±5dBm
18 7±5dBm
19 5±5dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm
1-2
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2. SGH-S400i Flow Chart of Troubleshooting
2-1.Baseband
2-1-1. Power ON
'Power On' does not work
Check the current consumption
Yes
Current consumption
>= 100mA
Yes
Battery Voltage
>= 3.3V
Yes
Check the pin of UCD307
Pin#J12 >= 2.8V
Yes
Pin#A13 and
pin#A14 = 2.9V
Yes
pin#C12 = 1.8V
Yes
pin#10 of U311 =
1.8V
No
No
No
No
No
No
Download again
Charge the Battery
Check UCD307 and C332
Check UCD307 and C328
Check UCD307 and C329
Check U311 and C347
Yes
pin#10 of U312 =
1.6V
Yes
Checktheclocksignalatpin#3ofOSC101
Freq = 13MHz
Vrms >=300mV
Vpp >= 800mV
Yes
Check the initial operation
END
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No
No
Check U312 and C357
Check the clock generation circuit
(related to OSC101)
2-1
SGH-S400i Flow Chart of Troubleshooting
2-2
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This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
VCCD_1.8_PSC
R337
VCCD_1.8_PSC
R344
TA304
TA305
VBAT
VBAT
U311
1
VIN
2
AVIN
EN
3
MODE/SYNC
4
NC
5
NC
GND
11
1
VIN
2
AVIN
EN
3
MODE/SYNC
4
NC
5
NC
PGND
AGND
VOUT
U312
GND
11
SW
SW
PGND
AGND
VOUT
10
9
8
7
6
10
9
8
7
6
VCCD_1.8V
L302
C347
VCCD_1.6V
L303
C357
VRF_2.9V
R148
R150
C180
C139
AFC
R120
C140
OSC101
1
VCON
2
GND
VCC
OUT
4
3
2-3
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
R123
CLK13M_RF
SGH-S400i Flow Chart of Troubleshooting
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C
T
U
P
I
I
C
N
M
N
I
M
C
I
P
N
U
B
O
A
T
N
A
U
O
T
P
B
U
O
A
T
N
A
A
P
U
A
O
T
Q
X
N
R
T
T
X
R
P
Q
X
R
I
N
T
R
I
T
X
P
C
V
P
A
F
A
C
6
3
3
R
2-4
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
2-1-2. Initial
SGH-S400i Flow Chart of Troubleshooting
Initial Failure
Yes
pin#C12 of UCD307 = 1.8V
Yes
pin#10 of U311 = 1.8V
Yes
pin#10 of U312 = 1.6V
Yes
pin#J12 of UCD307 = 2.9V
Yes
Is the pin #K9 of UCD307
"Low→High" ?
Yes
No
No
No
No
No
(if it has some problem, it is to be replaced.)
(if it has some problem, it is to be replaced.)
(if it has some problem, it is to be replaced.)
(if it has some problem, it is to be replaced.)
(if it has some problem, it is to be replaced.)
Check the UCD307
Check the U311
Check the U312
Check the UCD307
Check the UCD307
There is 32.768kHz wave
forms at the C220 and
C221
Yes
The voltage is "High" at
the C328,C329,C332
Yes
LCD display is O.K
Yes
Sound is O.K
Yes
END
No
Check the UCP201
No
Check the UCD307
No
Check the LCD part
No
Check the Audio part
2-5
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
VCCD_1.6V
D(0:15)
CP_WEN
CP_OEN
FLASH_RESET
ROM1_CS
ROM2_CS
RAM_CS
HERA_CS
YMU_CS
LOWER_BYTE
UPPER_BYTE
A(0:24)
VRTC_1.5V
8
3
8
1
2
8
1
1
H
W
B
B
G
4
8
1
2
3
1
E
E
E
E
_
R
R
R
R
8
O
O
O
O
P
C
1
C
C
C
_
_
_
_
_
D
D
D
D
O
I
D
D
D
D
_
V
V
V
V
D
D
V
UCP201
F
U
B
_
1
W
S
P
_
4
5
6
8
7
D
D
D
D
D
R
R
R
R
R
B
B
B
B
B
Y
Y
Y
Y
Y
E
E
E
E
E
K
K
K
K
K
8
3
4
1
6
J
H
H
H
H
C207
2
8
1
1
5
W
U
U
U
7
4
6
5
1
1
1
1
_
_
_
_
8
8
8
8
P
P
P
P
1
1
1
1
_
_
_
_
O
O
O
O
I
I
I
I
_
_
_
_
D
D
D
D
D
D
D
D
V
V
V
V
K
L
C
_
I
0
1
C
9
1
1
D
D
D
M
_
R
R
R
8
B
B
B
3
Y
Y
Y
O
E
E
E
I
K
K
K
P
6
4
5
2
1
H
G
G
J
VCCD_1.8V
C209 C211
C208
4
8
6
8
1
1
9
1
4
1
1
1
L
P
L
C
D
F
D
T
0
1
2
6
3
8
7
9
1
1
1
_
1
_
_
_
_
_
_
8
_
8
8
8
8
8
8
8
P
P
P
P
P
P
P
1
P
1
1
1
1
1
1
_
_
_
_
1
_
_
_
_
O
O
O
O
I
I
I
I
O
O
O
O
I
I
I
_
_
_
_
I
_
_
_
_
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
V
V
V
N
N
N
E
E
E
_
_
0
1
2
3
_
0
D
D
T
T
T
T
T
T
A
A
A
A
M
A
A
M
D
D
D
D
C
D
D
C
_
_
_
_
_
_
_
_
I
I
I
I
I
I
I
I
C
C
C
C
C
C
C
C
M
M
M
M
M
M
M
M
_
_
_
_
_
_
_
_
1
2
3
4
9
0
3
8
2
2
2
2
3
4
4
0
O
O
O
O
O
O
O
O
I
I
I
I
I
I
I
I
P
P
P
P
P
P
P
P
3
2
3
5
4
4
3
4
1
1
1
1
1
1
1
1
J
L
L
L
L
K
N
M
C210
CLK13M_TR
R203
CKO_IACK
IOBIT1_PIO06
IOBIT0_PIO05
SPFS1_PIO15
ATDO_PWM2
ATDI_RTS1
ATCK_CTS1
ATMS_PIO45
PIO31_IRQ6
PIO00_IRQ5
8
7
2
2
O
O
I
I
P
P
7
9
1
1
U
W
10K
T12
TDO
V14
TDI
U14
TCK
N12
N11
V12
N15
N16
M17
M18
T15
INT0
W6
IO
V6
RWN
P11
D_D15
N10
D_D14
N9
D_D13
N8
D_D12
P9
D_D11
P8
D_D10
R9
D_D9
T9
D_D8
T8
D_D7
U8
D_D6
V8
D_D5
R8
D_D4
T7
D_D3
R7
D_D2
T6
D_D1
U6
D_D0
R6
D_A8
N6
D_A7
V4
D_A6
T5
D_A5
U4
D_A4
V3
D_A3
W3
D_A2
W2
D_A1
V1
D_A0
V16
TEST3
T14
TEST2
U15
TEST1
T17
T13
L5
M4
K12
P12
P16
IRQ4
P18
IRQ3
P17
IRQ2
M19
IRQ1
M16
PIO47
J16
R14
PIO34
U18
PIO33
2
3
O
I
P
3
1
R
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
DSP_DB(6)
DSP_DB(5)
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(1)
DSP_DB(0)
CHG_ON
EAR_SWITCH
CHG_DET
EAR_SEL
AMP_SHDN
DACPW_ON
BACKLIGHT_EN
XOENAQ
PWR_KEEP
CLK32K
RTCALARM
FLASH_EN
SPK_SEL
PCM_SYNC
PCM_IN
PCM_OUT
PCM_CLK
DSP_INT
DSP_IO
DSP_RWN
DSP_AB(8)
DSP_AB(7)
DSP_AB(6)
DSP_AB(5)
DSP_AB(4)
DSP_AB(3)
DSP_AB(2)
DSP_AB(1)
DSP_AB(0)
CP_TDO
CP_TDI
CP_TCK
CP_TMS
HALL_SENSOR
HERA_INT
YMU_IRQ
JACK_IN
INTRQ
M_HOLD
USB_CON
LED_DATA
4
2
8
5
2
6
2
1
1
1
1
4
1
1
1
6
1
W
B
W
R
C
G
G
B
B
B
I
1
4
5
2
3
S
N
C
N
K
_
_
_
_
_
T
T
T
M
8
8
8
8
8
C
S
S
R
T
P
P
P
P
P
E
R
V
1
1
1
1
1
T
R
_
_
_
_
_
O
O
O
O
O
I
I
I
I
I
_
_
_
_
_
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
SPTXD1_I2SD_PIO16
SPRXD1_PIO17
SPCLK1_PIO18
CPTSTSTOP_CKO
Q
E
P
R
E
K
E
L
6
K
N
C
4
R
M
T
S
O
I
R
W
Y
U
P
A
P
S
O
_
_
_
L
2
C
C
1
6
5
9
0
0
3
A
T
T
2
2
1
1
2
M
C
C
R
R
O
O
O
O
O
S
T
I
1
2
W
I
I
I
I
X
X
R
P
P
P
O
P
P
P
9
9
5
7
6
9
6
5
9
7
1
1
1
1
1
1
1
1
1
G
F
P
V
P
V
H
H
U
G
TR_RST
V211
R221
DSP_DB(0:15)
DSP_AB(0:8)
R206
OSC200
C221
C220
VDD_AC_ON
VCAM_EN
P_MODE
SPK_PHONE_EN
1
0
2
F
C222 C223
8
7
1
1
F
1
F
2
1
2
U
U
C
_
C
_
A
N
A
N
S
D
S
A(0)
A(1)
A(2)
A(3)
A(4)
A(5)
A(6)
A(7)
A(8)
A(9)
A(10)
A(11)
A(12)
A(13)
A(14)
A(15)
A(16)
A(17)
A(18)
A(19)
A(20)
A(21)
A(22)
A(23)
A(24)
D(0)
D(1)
D(2)
D(3)
D(4)
D(5)
D(6)
D(7)
D(8)
D(9)
D(10)
D(11)
D(12)
D(13)
D(14)
D(15)
SIMCLK
SIMDATA
SIMRST
USB_SUSP
USB_DET
USB_VPO
USB_VMO
USB_OEN
USB_DATA
UP_SCLK
UP_SDO
UP_SDI
UP_CS
MIC_SEL
VBT_EN
BT_RTS
BT_TXD
BT_RXD
BT_CTS
SDS_TXD
SDS_RXD
KEY_COL(0:4)
PSW1_BUF
KEY_ROW(0:4)
B7
A_A0
C8
A_A1
D8
A_A2
A6
A_A3
C6
A_A4
C5
A_A5
D7
A_A6
E7
A_A7
C4
A_A8
C2
A_A9
A3
A_A10
B3
A_A11
B1
A_A12
D6
A_A13
D5
A_A14
D3
A_A15
E8
A_A16
F8
A_A17
E6
A_A18
D2
A_A19
E4
A_A20
E3
A_A21
F5
A_A22
F4
A_A23
F3
A_A24
F2
PIO35_A_A25_BOOTSEL
A8
A_D0
E9
A_D1
F9
A_D2
G10
A_D3
G11
A_D4
F11
A_D5
E11
A_D6
G12
A_D7
D11
A_D8
E12
A_D9
C12
A_D10
A12
A_D11
F12
A_D12
D12
A_D13
E13
A_D14
D13
A_D15
D14
A_WEN
B14
A_OEN
E14
PIO30_WAITN
H14
FLASHRSTN
A14
A_CS0N
C15
A_CS1N
G14
A_CS2N
J14
A_CS3N
D15
A_CS4N
C16
A_CS5N
F15
A_CS6N
B17
A_CS7N
H16
A_BE0N
A17
A_BE1N
P
S
U
T
S
S
_
R
B
M
S
I
U
S
K
_
_
L
7
4
O
C
I
0
1
M
O
O
M
I
I
I
I
S
P
P
S
4
5
2
9
1
T
P
P
B
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(4)
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(4)
D
V
V
I
I
M
P
V
V
_
_
B
B
S
S
U
U
_
_
9
1
0
1
O
O
I
I
P
P
9
8
1
1
C
C
C203
0
2
1
1
1
2
8
1
1
1
9
1
8
8
7
1
1
R
M
L
J
L
K
T
M
M
M
M
4
2
3
0
1
7
6
5
8
D
D
1
1
1
1
1
1
1
1
1
_
_
S
S
S
S
S
S
S
S
S
A
A
S
S
S
S
S
S
S
S
S
S
D
V
V
V
V
V
V
V
V
V
S
D
V
V
A
O
N
T
O
E
A
P
M
O
D
V
V
D
2
_
_
_
_
3
S
0
0
B
B
B
B
2
1
I
O
S
O
S
S
S
0
_
I
I
0
U
U
0
U
U
0
O
P
P
I
_
_
_
_
D
_
K
D
0
_
P
6
7
2
3
0
X
0
L
X
S
_
3
3
1
1
R
T
F
R
R
C
O
O
O
O
O
I
S
T
P
P
P
I
I
P
I
I
S
R
S
S
P
P
D
D
P
S
P
2
3
4
3
6
2
6
4
7
3
7
1
1
1
1
T
P
P
U
R
N
R
F
E
E
D
VCCD_1.6V
C204
C205
C206
2
1
0
8
8
3
2
9
8
1
1
2
1
9
8
1
1
7
1
H
H
A
H
H
H
N
V
M
V
G
G
A
9
8
1
8
7
6
5
7
6
4
5
3
2
S
S
S
E
S
S
S
E
E
S
E
S
S
S
S
S
S
S
S
S
S
S
R
R
R
V
V
4
0
O
I
P
_
0
S
0
T
X
T
R
2
3
N
M
R
V
V
V
V
V
V
V
O
O
O
O
C
C
C
C
_
_
_
_
D
D
D
D
D
D
D
D
V
V
V
V
X
X
T
R
4
9
A
A
4
2
8
8
D
D
2
2
0
O
1
2
3
O
I
I
R
R
D
Q
Q
D
D
D
I
I
P
P
_
_
R
R
R
R
R
R
_
_
I
I
1
2
0
B
B
B
B
0
_
_
4
4
D
Y
0
1
Y
Y
Y
S
1
O
O
T
E
C
X
X
E
E
E
I
I
X
P
T
P
C
K
D
R
R
K
K
K
6
7
7
1
7
6
5
6
4
5
6
1
1
J
J
J
J
L
K
N
M
M
R
R
2-6
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
2-1-3. Sim Part
"Insert SIM is displayed on the LCD
SGH-S400i Flow Chart of Troubleshooting
Yes
Check the SIM
connector's (SIM301)
connection to SIM card
Yes
Check the voltage at
pin#1 of SIM301 >=
2.8V ?
Yes
Is there any signals
pin#2,#3,#6 of SIM301 ?
Yes
Check the SIM Card
END
No
No
No
Resolder or change SIM301
Check the UCD307
Check the UCP201
2-7
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
VSIM
SIM_RST
SIM_CLK
SIM301
C
C
V
1
D
C
K
P
N
L
C
V
2
P
O
/
I
G
C
V
3
6
4
5
C
C
C
N
7
C
N
N
N
9
8
0
1
SIM_IO
C318C317
C320C319
C321
2-8
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
2-1-4. Camera Part
Camera function does not work
SGH-S400i Flow Chart of Troubleshooting
Check the connect SOC101?
Yes
Pin#2,3ofU111ishigh?
Yes
Check the U111
Yes
Pin #9 ≒ 2.8V,
Pin #10 ≒ 1.8V
Yes
Pin #12 of SOC101 is 24MHz?
Yes
No
No
No
No
Connect the SOC101
Check the UCP201
U111
Resolder or Change
Check the U300
END
2-9
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
2-10
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
HSYNC
BCAM_D(0)
BCAM_D(1)
BCAM_D(2)
BCAM_D(3)
BCAM_D(4)
BCAM_D(5)
BCAM_D(6)
BCAM_D(7)
FLASH-
FLASH+
0
2
1
C
V1.8_CAM
0
0
1
R
1
2
1
C
4
1
1
R
V
V1.8_CAM
VSYNC
CAM_RST
PCLK
CAM_SDA
MCLK
CAM_SCL
5
7
1
1
1
R
V
V2.8_CAM
9
1
1
R
V
1
R
V
V2.8_CAM
0
0
1
L
11
13
15
17
19
21
23
1
3
5
7
9
SOC101
1
3
5
7
9
11
13
15
17
19
21
23 24
NC NC
25
26
2
2
4
4
6
6
8
8
10
10
12
12
14
14
16
16
18
18
20
20
22
22
24
9
3
1
1
1
R
V
0
0
2
1
1
R
R
V
V
VBAT
1
1
C
VCAM_EN
R134
C130
C127
U111
VIN VOUT1
1
EN1
2
EN2
3
CBYP
4
D
D
D
N
N
N
G
G
G
1415
12
13
11
VOUT2
GND
D
D
N
N
G
G
16
10
9
C151
6
D
N
G
C152
2-11
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
LCD_D[0:15]
LCD_WEN
L_ADS
LCD_CS
OSC300
A(1)
A(2)
CAM_D(0:7)
D_SDIN
D_SDOUT
D_MSCK
D_BCK
D_LRCK
VDD_AC_2.8
)
)
)
)
)
)
)
7
(
D
_
M
A
C
4
4
4
5
5
2
1
C
B
0
_
C
C
N
N
O
I
P
J3
J8
L_DA17
L_DA16
LS_CS_N
L_DA0
L_DA1
L_DA2
L_DA3
L_DA4
L_DA5
L_DA6
L_DA7
L_DA8
L_DA9
L_DA10
L_DA11
L_DA12
L_DA13
L_DA14
L_DA15
L_RD_N
L_WR_N
L_ADS
L_CS_N
L_RESET_N
G
0
1
A
A
S
S
_
_
M
M
9
C
C323
G6
H6
H8
LCD_D(0)
K6
LCD_D(1)
J6
LCD_D(2)
K5
LCD_D(3)
K4
LCD_D(4)
J4
LCD_D(5)
K1
LCD_D(6)
K2
LCD_D(7)
K3
LCD_D(8)
J2
LCD_D(9)
LCD_D(10)
H2
LCD_D(11)
H3
LCD_D(12)
H4
LCD_D(13)
J5
LCD_D(14)
H5
LCD_D(15)
G3
J7
G7
H7
K7
3
2
R312
1
4
C322
3
5
0
1
A
B
C
B
A
K
4
5
2
3
0
1
E
_
_
_
_
_
E
B
O
O
O
O
O
D
I
I
I
O
I
I
O
P
P
P
P
P
R
T
M
G
G
G
G
G
_
S
T
1
0
9
8
9
0
3
1
J
1
B
H
K
F
J
H
7
T
N
K
K
N
K
I
D
U
D
C
C
C
A
_
O
S
B
R
T
W
_
L
_
D
D
C
A
M
P
A
T
_
_
D
A
D
C
S
D
_
S
D
_
D
U300
1
S
3
1
2
0
2
T
2
U
N
O
I
X
X
0
0
1
8
1
A
C
B
4
D
D
D
D
D
D
S
S
S
S
S
A
_
_
_
_
_
_
M
M
M
M
M
M
8
9
0
8
0
1
1
G
G
B
F
G
)
8
(
A
)
)
)
)
)
4
3
2
1
0
(
(
(
(
(
D
D
D
D
D
0
7
8
6
9
5
1
1
D
D
D
D
D
D
D
S
S
S
S
S
S
S
_
_
_
_
_
_
_
M
M
M
M
M
M
M
0
1
8
7
7
9
9
8
F
E
E
E
F
E
F
)
)
)
)
0
)
)
7
6
5
1
9
8
(
(
(
(
(
(
D
D
D
D
D
D
)
6
5
4
3
2
1
0
(
(
(
(
(
(
(
R364
D
D
_
_
M
M
A
A
C
C
1
2
F
F
5
6
D
D
_
_
C
C
2
1
D
S
_
M
9
0
1
D
D
)
)
2
1
1
1
(
(
D
D
R363
D
D
D
D
D
_
_
_
_
_
M
M
M
M
M
A
A
A
A
A
C
C
C
C
C
2
3
3
2
1
2
1
3
2
1
E
E
D
D
1
2
3
4
D
D
D
D
_
_
_
_
C
C
C
C
N
5
4
3
N
_
1
1
1
_
D
S
D
D
D
S
S
S
R
C
_
_
_
_
_
M
M
M
M
M
0
1
6
8
7
C
A
D
D
1
2
A
C
D
C
A
C
A
B
0
K
K
A
D
L
C
D
_
C
S
S
C
_
_
P
_
C
C
C
N
_
T
N
E
E
_
R
L
S
T
R
O
E
N
H
I
W
R
_
_
_
_
M
M
M
M
6
7
8
7
7
B
C
A
A
B
T
S
R
_
C
USB_DP
USB_DM
N
_
S
C
_
S
M
6
C
S
S
V
H
_
_
C
C
VDDI
VDDI
VDDICD
VDDAC
UVDDI
SVDDI
VDDC
VDDC
VDDC
PGND
PVDD
GND
GND
GND
GND
GND
GND
K
L
C
M
_
C
D6
F6
H1
K9
G4
E3
D5
E5
F5
A9
B9
G1
G2
D4
E4
F4
E6
G5
J1
VCCD_1.8V
VCCD_1.8V
R313
)
)
)
5
4
3
1
1
1
(
(
(
D
D
D
TP304
VDD_AC_2.8
C305
2
3
C315
M_HOLD
HERA_INT
CP_WEN
CP_OEN
HERA_CS
D[0:15]
CAM_SCL
CAM_SDA
HOR_REF
VER_REF
M_CLK
C306
U301
1
VCCD_2.9V
R302
C307
M_HOLD
R365
C380
C387
FLASH_RESET
9
0
3
R
V
CAM_RST
P_CLK
C382
2-12
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
2-1-5. Bluetooth Part
Bluetooth does not work
SGH-S400i Flow Chart of Troubleshooting
Check U310
Pin #2 is High ?
Yes
Check U310
Pin #10 ≒ 1.8V ?
Yes
Check U103
Pin #16 ≒ 19.2MHz ?
Yes
Check ANT101
Pin#2is-6~+4dBm?
Yes
END
No
No
No
No
Check the UCP201
Check the U310
Check the UCP201
ANT101
Resolder or Change
2-13
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
2-14
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
V
VBT_EN
DACPW_ON
R361
BT_1.8V
VBAT
R362 C399
VAUDIO_3.3
BT_1.8V
U310
VIN
110
EN1
2
EN2
3
CBYP
4
N/C
5
C378
1112
D
N
G
1314
D
N
G
VOUT1
VOUT2
GND
D
D
N
N
G
G
1516
N/C
N/C
D
N
G
9
8
C374
7
6
D
N
G
C375
ANT101
BT_CTS
BT_RTS
BT_TXD
BT_RXD
C153
R140
8
RESETB
26
UART_CTS
14
UART_RTS
17
UART_RX
2
UART_TX20PCM_SYNC
21
VDD_1.8V
18
VDD_REG
11
VDD_UART
5
GND
12
GND
19
GND
23
GND
24
GND
U103
ANT
PCM_CLK
PCM_IN
PCM_OUT
PIO_0
PIO_1
PIO_2
PIO_3
PIO_4_UART_TX2
PIO_5_UART_RTS2
PIO_6_UART_CTS2
PIO_7_UART_RX2
132
22
16
13
9
1
25
3
4
7
6
10
15
PCM_CLK
PCM_IN
PCM_OUT
PCM_SYNC
R145
C169
C170
2-15
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
2-1-6. Microphone Part
Microphone does not work
Is the assembled status
of Microphone O.K?
Yes
Check the DC bias voltage
on Mic path.
R352 ≒ 2.3V
Yes
Is microphone OK?
Yes
END
No
No
No
Reassemble the microphone
Resolder or change
R352, R359, R342, R353, R354,
R355, R358, C365, C369
Check UCD307
2-16
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SGH-S400i Flow Chart of Troubleshooting
2-17
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
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