Samsung D520 Service Manual Trouble Shooting
9. Flow Chart of Troubleshooting
9-1.Baseband
9-1-1. Power ON
'Power On' does not work
Check the current consumption
Yes
Current consumption
>= 100mA
Yes
Check the Vbat Voltage
Voltage >=3.3V
Yes
Check the pin of U100
Pin#J12 >= 2.8V
Yes
Pin#A13 and
pin#A14 =2.8V
Yes
No
No
No
No
Download again
Charge the Battery
Check U100 and C110
pin#G11 =
1.5V
Yes
No
Check U100, U105 and U106
ChecktheclocksignalatC601
Freq = 26MHz
Vrms >=300mV
Vpp≒900mV
Yes
Check the initial operation
END
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No
Check the clock generation circuit
(related to 3pin of OSC600, C602, R601)
9-1
Flow Chart of Troubleshooting
T
A
B
V
3
0
V
1
9
.
C
2
_
D
C
C
V
V
8
.
1
_
2
D
0
C
1
C
C
V
V
1
9
.
0
2
1
_
C
A
C
C
V
V
9
.
2
_
D
0
C
0
C
1
V
C
V
5
.
1
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C
T
R
V
V
5
.
1
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1
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D
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V
V
9
.
2
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D
C
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V
9
.
2
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F
R
V
V
9
.
2
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A
C
C
V
V
8
.
1
_
7
O
D
L
V
V
9
.
2
_
B
C
C
V
1
L
B
_
Y
E
K
A
T
4
0
1
C
1
C
0
3
1
B
8
E
5
1
B
1
K
5
F
1
1
3
J
3
M
6
N
5
N
J
4
5
G
4
K
2
R
6
P
1
N
1
0
1
M
6
A
F
6
L
1
1
1
P
3
4
C
4
B
3
1
D
F
7
F
8
F
9
F
0
1
7
G
8
G
9
G
1
G
0
6
H
7
H
8
H
9
H
7
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J
8
9
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J
0
1
0
1
K
1
2
)
5
1
:
0
(
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D
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P
S
D
K
T
T
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R
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M
T
6
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2
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7
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D
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D
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N
6
1
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7
1
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5
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1
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B
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D
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3
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6
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5
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6
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3
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1
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A
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2
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X
T
2
1
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A
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A
K
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L
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C
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R
R
R
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E
E
E
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S
S
S
1
2
2
1
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B
C
C
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L
L
A
R
C
D
E
R
R
S
E
E
S
S
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T
A
B
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L
9
1
0
L
9
M
1
0
N
K
9
L
7
1
5
C
1
4
C
P
3
5
P
R
6
D
1
N
4
6
M
L
6
P
4
R
4
1
4
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1
3
M
1
3
R
1
3
L
1
3
K
1
4
L
1
5
M
1
5
P
1
5
N
1
4
M
1
4
N
1
2
P
1
2
R
1
2
N
1
1
P
C
6
C
7
D
6
D
7
B
6
B
5
E
7
D
9
F
_
U
S
B
1
P
W
_
N
R
O
W
P
N
O
J
_
I
G
T
I
N
S
_
D
P
C
M
K
3
_
M
L
1
C
Q
E
A
X
N
O
K
L
3
C
K
2
T
U
X
N
U
O
A
T
O
U
X
P
U
A
6
1
N
N
I
X
U
A
1
C
I
N
X
P
U
A
T
U
N
O
I
C
M
T
O
U
P
C
I
M
N
N
I
I
C
M
I
I
N
C
P
M
T
N
O
U
B
A
U
B
T
P
O
A
T
N
O
U
A
A
U
A
T
P
O
A
R
N
X
T
Q
T
R
P
X
Q
X
T
I
N
R
P
I
X
T
R
7
1
1
C
R
X
T
_
W
P
F
A
C
0
0
1
T
A
0
9-2
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
VCCD_2.9V
Flow Chart of Troubleshooting
VRF_2.9V
CLK13M_TR
CLK13M_MC
CLK13M_YMU
C600
C601
VBAT
2
C604
R600
R601
C602
C603
R602
1
1
0
1
F
RF_EN
RTXIP
RTXIN
RTXQP
RTXQN
SERDAT
SERLE
SERCLK
XOENA
9
XOUT
8
BIP
7
BIN
6
BQP
5
BQN
4
SDIO
3
_SEN
2
SCLK
1
C
C
N
N
3435
33
3
2
OSC600
10
11
12
13
T
N
D
P
_
D
O
I
E
D
V
S
V
E
R
_
U600
2
1
L
L
A
N
A
D
N
G
T
E
T
X
X
X
30
29
31
4
1
16
15
14
L
28
C606
H
D
O
N
O
F
F
G
R
R
RFIPP
17
RFIPN
18
RFIDP
19
RFIDN
20
RFIEP
21
RFIEN
22
RFIAP
23
RFIAN
E
24
V
D
I
D
C
O
D
D
F
X
V
27
M
A
X
2632
25
C608
C607
D
D
V
D
D
V
C605
R603
C609
GSM_PAM_IN
DPCS_PAM_IN
PCS_LNA_IN_P
PCS_LNA_IN_N
DCS_LNA_IN_P
DCS_LNA_IN_N
GSM_LNA_IN_P
GSM_LNA_IN_N
AFC
3
TA103
VLDO7_1.8V
R108
U105
1
VIN
2
GND
3
EN4FB
SW
VCCD_1.8V HP_CORE_1.57V
L100
5
C132
C131
VIN
2
GND
3
EN4FB
U106
SW
51
9-3
VLDO1_1.5V
L101
D100
C130
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-1-2. Initial
Initial Failure
Yes
The pin #C12 of U100 =
1.8V and
the pin #J12 of U100 =
2.8V ?
Yes
Is the pin #K9 of U100
"Low→High" ?
Yes
There is 32.768kHz wave
forms at the C209 and
C210
Yes
Is the pin #3 of U105 &
U106 "High"?
No
No
No
No
(if it has some problem, it is to be replaced.)
(if it has some problem, it is to be replaced.)
Check the U105 & U106
Check the U100
Check the U100
Check the U200
Yes
The voltage is "High" at
the C111,C106
Yes
LCD display is O.K?
Yes
Sound is O.K?
Yes
END
No
Check the U100
No
Check the LCD part
No
Check the Audio part
9-4
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
D(0:15)
CP_WEN
CP_OEN
FLASH_RESET
ROM1_CS
ONENAND_CS
RAM_CS
LCDC_CS
YMU_CS
LOWER_BYTE
UPPER_BYTE
A(0:24)
Flow Chart of Troubleshooting
HP_CORE_1.57V
VLDO1_1.5V
R209R210
C200
C218
C217
2
1
0
1
8
7
1
2
1
1
1
8
9
1
8
8
1
1
2
F
1
2
U
C
C
_
N
N
A
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
BT_CTS
BT_RXD
BT_TXD
BT_RTS
HOST_WAKE
SDS_TXD
SDS_RXD
KEY_COL(0:4)
PSW1_BUF
KEY_ROW(0:5)
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
T
S
R
M
I
S
K
_
L
4
O
I
C
1
O
M
M
I
I
I
P
S
S
5
4
2
T
P
P
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)
KEY_ROW(5)
S
V
P
S
I
P
U
V
S
_
_
B
B
S
S
U
U
_
_
9
7
0
0
O
O
I
I
P
P
9
9
1
1
C
B
7
1
1
1
M
M
L
M
M
L
M
R
F
D
U
_
_
A
A
S
D
S
D
V
V
I
O
P
M
V
V
_
_
B
B
S
S
U
U
_
_
2
1
1
1
O
O
I
I
P
P
7
8
1
1
D
C
J
K
T
7
8
5
4
3
6
2
0
1
D
1
1
1
1
1
1
1
1
1
_
S
S
S
S
S
S
S
S
S
A
S
S
S
S
S
S
S
S
S
D
V
V
V
V
V
V
V
V
V
D
V
A
O
T
N
E
A
M
V
D
O
D
_
_
_
2
3
S
0
0
B
B
B
2
1
I
O
S
S
S
O
0
_
I
I
0
U
U
U
0
0
O
P
P
I
_
_
_
D
_
K
D
0
_
P
3
7
6
0
X
0
L
X
S
_
3
3
1
R
T
F
R
R
C
O
O
O
O
S
T
I
P
P
I
I
I
P
P
S
S
P
P
P
S
D
D
R
S
6
3
6
7
4
2
4
2
3
3
1
1
1
T
P
P
R
U
N
R
F
E
E
HP_CORE_1.57V
C201 C206C204
C203C202
8
1
2
0
8
3
2
9
8
8
1
1
1
1
9
2
1
1
7
G
A
H
G
A
V
H
H
H
H
M
N
V
5
6
4
2
3
9
8
7
1
5
6
7
8
S
S
S
S
S
S
S
S
S
E
E
E
E
S
S
S
S
S
S
S
S
S
R
R
R
R
V
V
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
UCP200
X
X
T
R
4
9
4
A
A
4
2
8
8
0
D
D
2
2
2
3
O
0
1
O
O
I
I
I
R
R
D
D
Q
Q
D
D
I
I
P
P
P
_
_
R
R
R
R
R
R
_
_
_
I
I
1
2
0
B
B
B
B
0
0
_
_
4
4
D
Y
Y
1
0
Y
Y
S
S
1
0
O
O
E
E
T
X
C
X
E
E
T
I
I
X
X
P
K
K
P
C
R
D
R
K
K
R
T
T
6
4
5
7
6
5
1
7
6
2
7
6
3
1
J
J
1
J
J
L
N
N
K
M
M
M
R
R
VCCD_1.8V
C205
8
2
3
8
8
1
8
2
1
1
5
8
1
1
1
T
W
W
U
U
U
B
G
B
H
4
3
8
7
5
6
1
2
3
4
1
1
1
1
1
1
E
E
E
E
_
_
_
_
_
_
R
R
R
R
8
8
8
8
8
8
O
O
O
O
P
P
P
P
P
P
1
1
1
1
1
1
C
C
C
C
_
_
_
_
_
_
_
_
_
_
D
D
D
D
O
O
O
O
O
O
I
I
I
I
I
I
D
D
D
D
_
_
_
_
_
_
V
V
V
V
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
V
F
U
B
_
1
D
K
W
M
L
S
C
C
P
_
_
I
I
1
_
0
1
4
C
C
5
6
7
8
9
1
D
D
D
D
D
D
D
D
M
M
_
_
R
R
R
R
R
R
R
R
8
8
B
B
B
B
B
B
B
B
0
3
Y
Y
Y
Y
Y
Y
Y
Y
O
O
E
E
E
E
E
E
E
E
I
I
K
P
P
K
K
K
K
K
K
K
3
5
6
8
1
4
3
6
2
4
1
1
J
H
H
H
H
H
G
G
J
J
VRTC_1.5V
C208
C207
CLK13M_TR
TR_RST
2
4
5
8
8
4
6
2
6
1
9
1
1
4
1
F
D
L
D
P
L
9
8
7
0
2
1
_
_
_
1
1
1
8
8
8
_
_
_
8
8
8
P
P
P
1
1
1
P
P
P
_
_
_
1
1
1
_
_
_
O
O
O
I
I
I
O
O
O
_
_
I
I
I
_
_
_
_
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
V
N
N
E
E
_
_
0
3
2
1
D
T
T
T
T
T
M
A
A
A
A
A
D
C
D
D
D
D
_
_
_
_
_
_
I
I
I
I
I
I
C
C
C
C
C
C
M
M
M
M
M
M
_
_
_
_
_
_
0
9
3
1
2
4
4
3
2
2
2
2
O
O
O
O
O
O
I
I
I
I
I
I
P
P
P
P
P
P
4
4
4
3
5
3
2
1
1
1
1
1
1
1
L
L
L
L
N
K
M
F
C
2
1
1
1
1
1
1
1
6
1
4
1
G
C
B
W
C
B
B
B
G
W
R
I
6
5
4
3
2
1
S
N
C
N
K
_
_
_
_
_
_
T
T
T
M
8
8
8
8
8
8
C
S
S
R
T
P
P
P
P
P
P
E
V
R
1
1
1
1
1
1
T
R
_
_
_
_
_
_
O
O
O
O
O
O
I
I
I
I
I
I
_
_
_
_
_
_
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
N
E
_
0
T
A
D
N
_
I
M
T
C
R
U
M
A
O
_
L
2
C
C
3
3
A
T
T
4
C
C
R
R
O
S
T
I
2
1
P
O
X
R
X
6
7
9
9
1
1
1
1
F
H
H
G
L
E
S
_
T
U
O
_
O
I
D
U
A
OSC200
C210
D
D
V
Q
E
P
R
E
K
E
L
K
C
R
S
W
Y
P
S
_
_
9
0
1
2
O
O
I
I
P
P
9
5
1
1
P
P
SPTXD1_I2SD_PIO16
CPTSTSTOP_CKO
6
4
O
I
P
_
1
0
5
6
1
2
2
M
O
O
O
I
I
I
W
P
P
P
P
7
6
9
5
1
1
1
G
V
V
U
CKO_IACK
IOBIT1_PIO06
IOBIT0_PIO05
SPFS1_PIO15
SPRXD1_PIO17
SPCLK1_PIO18
ATDO_PWM2
ATDI_RTS1
ATCK_CTS1
ATMS_PIO45
PIO31_IRQ6
PIO00_IRQ5
8
7
2
2
2
3
O
O
O
I
I
I
P
P
P
7
9
3
1
1
1
U
R
W
C209
TDO
TCK
INT0
RWN
D_D15
D_D14
D_D13
D_D12
D_D11
D_D10
D_D9
D_D8
D_D7
D_D6
D_D5
D_D4
D_D3
D_D2
D_D1
D_D0
D_A8
D_A7
D_A6
D_A5
D_A4
D_A3
D_A2
D_A1
D_A0
TEST3
TEST2
TEST1
IRQ4
IRQ3
IRQ2
IRQ1
PIO47
PIO34
PIO33
TP213
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)
DSP_TMS
DSP_TDO
DSP_TDI
DSP_TCK
FLASH_EN1
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)
TP209
TP210
TP211
TP212
NAND_INT
HALL_SENSOR
LCDC_INT
YMU_IRQ
JACK_IN
INTRQ
M_HOLD
USB_CON
LED_DATA
DSP_DB(0:15)
DSP_AB(0:8)
R204
T12
V14
TDI
U14
N12
N11
V12
N15
N16
M17
M18
T15
W6
IO
V6
P11
N10
N9
N8
P9
P8
R9
T9
T8
U8
V8
R8
T7
R7
T6
U6
R6
N6
V4
T5
U4
V3
W3
W2
V1
V16
T14
U15
T17
T13
CP_TDO
CP_TDI
L5
M4
CP_TCK
CP_TMS
K12
P12
P16
P18
P17
M19
M16
J16
R14
U18
CHG_OFF
EAR_SWITCH
CHG_DET
EAR_SEL
AMP_EN
BT_WAKE
BRIGHTNESS
XOENAQ
PWR_KEEP
CLK32K
RTCALARM
9-5
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
Flow Chart of Troubleshooting
9-1-3. Sim Part
"Insert SIM is displayed on the LCD
Yes
Check the SIM
connector's (SIM111)
connection to SIM card
Yes
Check the voltage at
pin#1 of CN111 >=
2.8V ?
Yes
Is there any signals
pin#2,#3,#6 of CN111 ?
Yes
Check the SIM Card
END
No
No
No
Resolder or change SIM111
Check the U100
Check the UCP200
9-6
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
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