SGH-D520[8].pdf

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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
No
Download again
Yes
Check the Vbat Voltage
Voltage >=3.3V
No
Charge the Battery
Yes
Check the pin of U100
Pin#J12 >= 2.8V
No
Check U100 and C110
Yes
Pin#A13 and
pin#A14 =2.8V
No
pin#G11 =
1.5V
No
Check U100, U105 and U106
Yes
Yes
ChecktheclocksignalatC601
Freq = 26MHz
Vrms >=300mV
Vpp ≒ 900mV
No
Check the clock generation circuit
(related to 3pin of OSC600, C602, R601)
Yes
Check the initial operation
END
9-1
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Flow Chart of Troubleshooting
9-2
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Flow Chart of Troubleshooting
VCCD_2.9V
VRF_2.9V
C604
GSM_PAM_IN
DPCS_PAM_IN
C600
R600
RF_EN
C605
CLK13M_TR
9
10
11
12
13
14
15
16
R601
C602
CLK13M_MC
C601
XOUT
8
RFIPP
PCS_LNA_IN_P
17
C603
RTXIP
7 BIP
CLK13M_YMU
RFIPN
PCS_LNA_IN_N
18
RTXIN
R602
6
BIN
RFIDP
DCS_LNA_IN_P
19
RTXQP
U600
5 BQP
RFIDN
DCS_LNA_IN_N
20
RTXQN
4 BQN
RFIEP
GSM_LNA_IN_P
SERDAT
SERLE
21
3 SDIO
RFIEN
GSM_LNA_IN_N
22
2 _SEN
RFIAP
SERCLK
23
1 SCLK
RFIAN
24
35
34
33
32
31
30
29
28
27
26
25
R603
AFC
XOENA
C609
C606
C607
C608
3
4
2
1
VBAT
OSC600
VLDO7_1.8V
VCCD_1.8V
HP_CORE_1.57V
VLDO1_1.5V
R108
U105
U106
1
5
L100
1
5
L101
VIN
SW
VIN
SW
2
GND
2
GND
D100
3
EN
FB
4
3 EN
FB
4
C130
TA103
C132
C131
9-3
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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 ?
No
Check the U100
(if it has some problem, it is to be replaced.)
Yes
Is the pin #K9 of U100
"Low → High" ?
No
Check the U100
(if it has some problem, it is to be replaced.)
Yes
There is 32.768kHz wave
forms at the C209 and
C210
No
Check the U200
Yes
Is the pin #3 of U105 &
U106 "High"?
No
Check the U105 & U106
Yes
The voltage is "High" at
the C111,C106
No
Check the U100
Yes
No
LCD display is O.K?
Check the LCD part
Yes
No
Sound is O.K?
Check the Audio part
Yes
END
9-4
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Flow Chart of Troubleshooting
HP_CORE_1.57V
VLDO1_1.5V
HP_CORE_1.57V
VCCD_1.8V
VRTC_1.5V
R210
R209
C200
C201
C202
C203
C204
C205
C206
C207
C208
C217
C218
CLK13M_TR
TR_RST
TP213
A(0:24)
A(0)
B7
C8
A_A0
A(8)
A(7)
A(6)
A(5)
A(4)
A(3)
A(2)
A(1)
A_A1
TCK
TDI V14
T12
DSP_TMS
DSP_TCK
DSP_TDI
DSP_TDO
A6 A_A3
A_A4
U14
C6
C5 A_A5
A_A6
CKO_IACK
N12
IOBIT1_PIO06
N11
FLASH_EN1
D7
E7
IOBIT0_PIO05 V12
SPK_SEL
A_A7
A_A8
SPFS1_PIO15
N15
PCM_SYNC
C4
C2 A_A9
SPTXD1_I2SD_PIO16 N16
PCM_IN
A(10)
A(9)
SPRXD1_PIO17
M17
PCM_OUT
A3
B3 A_A11
A_A12
SPCLK1_PIO18 M18
A_A10
A(24)
A(23)
A(22)
A(21)
A(20)
A(19)
A(18)
A(17)
A(16)
A(15)
A(14)
A(13)
A(12)
A(11)
INT0
T15
W6
PCM_CLK
DSP_INT
B1
D6 A_A13
A_A14
IO
DSP_IO
DSP_DB(0:15)
RWN V6
DSP_RWN
D5
D3 A_A15
A_A16
D_D15
P11
D_D13
D_D14 N10
DSP_DB(11)
DSP_DB(12)
DSP_DB(13)
DSP_DB(14)
DSP_DB(15)
E8
F8 A_A17
E6 A_A18
D2 A_A19
D_D11
D_D12 N8
N9
D_D10 P8
P9
E4
E3 A_A21
A_A22
A_A20
D_D7
D_D8 T9
R9
DSP_DB(10)
F5
F4 A_A23
A_A24
UCP200
D_D5
D_D6 U8
T8
DSP_DB(2)
DSP_DB(3)
DSP_DB(4)
DSP_DB(5)
DSP_DB(6)
DSP_DB(7)
DSP_DB(8)
F3
D_D3
D_D4 R8
V8
D(0:15)
F2 PIO35_A_A25_BOOTSEL
D(10)
D(9)
D(8)
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
D(1)
D(0)
A8
E9 A_D1
A_D0
D_D2 R7
T7
DSP_AB(0:8)
F9
A_D2
D_A7
D_A8 R6
D_D0 U6
T6
DSP_DB(1)
G10 A_D3
A_D4
DSP_DB(0)
G11
F11 A_D5
A_D6
DSP_AB(0)
DSP_AB(1)
DSP_AB(2)
DSP_AB(3)
DSP_AB(4)
DSP_AB(5)
DSP_AB(6)
DSP_AB(7)
DSP_AB(8)
E11
G12 A_D7
A_D8
D_A6 V4
N6
D_A4 U4
T5
D11
E12 A_D9
D_A2 W3
V3
C12
A12 A_D11
A_D12
A_D10
D_A3
D(14)
D(13)
D(12)
D(11)
F12
D12 A_D13
A_D14
D_A0 V1
W2
TEST1
TEST2 T14
V16
E13
D13 A_D15
D(15)
U15
B14 A_OEN
A_WEN
CPTSTSTOP_CKO T17
CP_WEN
ATDI_RTS1
ATDO_PWM2 T13
K12
CP_TDO
CP_TDI
CP_TMS
CP_OEN
TP209
E14
PIO30_WAITN
ATCK_CTS1 M4
L5
TP210
H14 FLASHRSTN
CP_TCK
FLASH_RESET
TP211
A14
C15 A_CS1N
A_CS2N
A_CS0N
ATMS_PIO45
ROM1_CS
TP212
PIO31_IRQ6
P12
NAND_INT
G14
J14 A_CS3N
A_CS4N
PIO00_IRQ5
P16
R204
ONENAND_CS
HALL_SENSOR
IRQ3
IRQ4 P18
RAM_CS
D15
C16 A_CS5N
A_CS6N
IRQ1
IRQ2 M19
P17
INTRQ
JACK_IN
YMU_IRQ
LCDC_INT
LCDC_CS
F15
B17 A_CS7N
M16
PIO47 J16
YMU_CS
H16
A17 A_BE1N
R14
M_HOLD
LOWER_BYTE
A_BE0N
PIO34
USB_CON
UPPER_BYTE
PIO33 U18
LED_DATA
SIMCLK
SIMDATA
SIMRST
USB_SUSP
USB_DET
CHG_OFF
EAR_SWITCH
AMP_EN
EAR_SEL
CHG_DET
USB_VPO
USB_VMO
USB_OEN
USB_DATA
BT_WAKE
BRIGHTNESS
UP_SCLK
PWR_KEEP
XOENAQ
UP_SDO
CLK32K
UP_SDI
RTCALARM
UP_CS
OSC200
BT_CTS
BT_RXD
BT_TXD
BT_RTS
HOST_WAKE
C210
C209
SDS_TXD
SDS_RXD
KEY_COL(0:4)
KEY_COL(0)
KEY_COL(1)
KEY_COL(2)
KEY_COL(3)
KEY_COL(4)
PSW1_BUF
KEY_ROW(0:5)
KEY_ROW(0)
KEY_ROW(1)
KEY_ROW(2)
KEY_ROW(3)
KEY_ROW(4)
KEY_ROW(5)
9-5
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TDO
D8 A_A2
D_D9
DSP_DB(9)
D_D1
D_A5
D_A1
TEST3
D14
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