Samsung SGH-D720 User manual

MITs TELEPHONE
SGH-D720
MITs TELEPHONE CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded Views and Parts List
4. Electrical Parts List
5. PCB Diagrams
6. Block Diagrams

1.SGH-D720 Specification
1-1
1-1.GSMGeneralSpecification
GSM900
Phase1EGSM900 Phase2DCS1800 Phase1PCS1900
Freq.Band[MHz]
Uplink/Downlink890~915 935~960 880~915 925~960 1710~1785 1805~1880 1850~1910 1930~1990
ARFCNrange1~124 0~124 &
975~1023 512~885 512~810
Tx/Rxspacing45MHz45MHz95MHz80MHz
Mod.Bitrate/
BitPeriod270.833kbps 3.692us270.833kbps 3.692us270.833kbps 3.692us270.833kbps 3.692us
TimeSlot
Period/Frame
Period
576.9us
4.615ms576.9us 4.615ms576.9us 4.615ms576.9us 4.615ms
Modulation0.3GMSK0.3GMSK0.3GMSK0.3GMSK
MSPower33dBm~13dBm33dBm~5dBm30dBm~0dBm30dBm~0dBm
PowerClass 5pcl~15pcl5pcl~19pcl0pcl~15pcl0pcl~15pcl
Sensitivity-102dBm-102dBm-100dBm-100dBm
TDMAMux8 8 8 8
Cell Radius35Km35Km2Km-

SGH-D720 Speclflcation
1-2
1-2.GSMTxPowerClass
TXPower
control levelGSM900
5 33±2dBm
6 31±2dBm
7 29±2dBm
8 27±2dBm
9 25±2dBm
10 23±2dBm
11 21±2dBm
12 19±2dBm
13 17±2dBm
14 15±2dBm
15 13±2dBm
16 11±3dBm
17 9±3dBm
18 7±3dBm
19 5±3dBm
TXPower
control levelDCS1800
0 30±3dBm
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
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm
TXPower
control levelPCS1900
0 30±3dBm
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
11 8±4dBm
12 6±4dBm
13 4±4dBm
14 2±5dBm
15 0±5dBm

SAMSUNG Proprietary-Contents may change without notice
2. SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-
28
This Document can not be used without Samsung's authorization
2-1.Baseband
2-1-1. Power ON
Check the current
consumtion more than
100mA
Check the Vbat(battery+O)
Voltagemorethan3.3V
Downloader again
NO
Charge the Battery
NO
Check BTC300, C308 and C307
NO
YES
YES
YES
YES
'Power On' does not work
Check the pin
4ofTR600ismore
than 3.3V
Check the pin
1ofTR600ismore
than 3.3V
UCP100 pin A19
=3.0V
YES
Check TR600, TR602 and D601
NO
Check U605 and C606
NO
UCP100 pin B14
=1.8V
YES
Check U605 and C605
NO
UCP100 pin A15
=1.6V
YES
Check U604 and C618
NO
'Power On' does not work
END
Check the clock signal
at pin1 of OSC100
Freq=12MHz
Check the clock generation circuit
(OSC100)
NO
YES

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-2
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-3
This Document can not be used without Samsung's authorization
VDD_18D
R142
R122
R144
R107
C127
R101
VDD_30D
C132
VDD_15D
OSC101
2
1
C128
R103
R129
C103
1
3
2
R110
TR101
VDD_30D
R112R109R108
R143
R125
VDD_30D
C115
C129
R114
R128
VDD_15D
C121
R102
4
1
HOT
HOT
3OSC100
GND1
2
GND2
C101
R118
R113
C123
R111
C133
C116
VDD_18D
VDD_18D
C131
0
2
W9
S
S
V
WA-KEUP_INT W13
V19 WIRE_SCLK
U18 WIRE_SDI
WIRE_SDO
W21
Z_STATE1
N14
P15 Z_STATE2
W16 Z_STATE3
6
1
S
S
V
1
N
2
K7
1
S
S
V
8
1
S
S
V
1
G
1
B9
1
S
S
V
2
S
S
V
7
B
3
1
A3
S
S
V
4
S
S
V
6
1
B
1
2
A5
S
S
V
6
S
S
V
0
2
F
0
2
K7
S
S
V
8
S
S
V
1
2
R
Y9
M2 VDD_4
VDD_RTC
W12
VPP
L1
5
B1
S
S
V
0
1
S
S
V
1
2
A
A
3
1
Y1
1
S
S
V
2
1
S
S
V
7
A
A
3
Y3
1
S
S
V
4
1
S
S
V
1
A
A
2
U5
1
S
S
V
VDDSHV5_1 R1
H2
VDDSHV5_2
VDDSHV5_3 C2
AA11
VDDSHV6
VDDSHV7 Y16
L21
VDDSHV8
VDDSHV9 U21
V12
VDDSHV_RTC
VDD_1
A15
Y20 VDD_2
VDD_3
VDD3_3
J21
R20 VDD3_4
Y21 VDDA
A19
VDDSHV1_1
VDDSHV1_2 E21
AA2
VDDSHV2
VDDSHV3 Y7
B14
VDDSHV4_1
VDDSHV4_2 B10
A7
VDDSHV4_3
VDDSHV4_4 A5
Y15
W15 UARTS_CLKREQ
USB_DM R8
P9
USB_DP
USB_PUEN W4
VDD1
AA3
A3 VDD2_1
VDD2_2
A9
E2 VDD2_3
VDD3_1
B13
B20 VDD3_2
D8 SDATA_7
SDATA_8
C10
D14 SDATA_9
C9 SDCLK
D9 SDCLKX
H12 SDCLK_EN
TCK
W18
Y19 TDI
TDO
AA19
V17 TMS
UARTS_CLKIO
SDATA_10
C13 SDATA_11
C11 SDATA_12
D13 SDATA_13
D12 SDATA_14
C12 SDATA_15
SDATA_2
C5
D7 SDATA_3
D5 SDATA_4
C7 SDATA_5
C4 SDATA_6
G12 SADD_6
G11 SADD_7
G9 SADD_8
B12 SADD_9
B3 SBANK_0
SBANK_1
C3
T18 SCL
SDA
V20
D6 SDATA_0
C6 SDATA_1
D11
L14 RX3
A2 SADD_0
B2 SADD_1
SADD_10
B8
H10 SADD_11
H9 SADD_12
SADD_13
H11
B6 SADD_2
A1 SADD_3
G10 SADD_4
B9 SADD_5
NTRST
Y12
ON_NOFF
Y2
OSC1_IN
OSC1_OUT W3
N
I
_
K
2
3
C
S
O
3
1
v
3
1
A
AT
U
O
_
K
2
3
C
S
O
RE-SET_MODE P12
D
E
V
R
E
S
E
R
5
e
RTCK
Y17
V14 RX1
RX2
R9
NFRP W1
W2
NFWE
NFWP V4
AA20 NRE-SET_OUT
R12
NRESPWRON
B4 NSCAS
C8 NSDQML
D10 NSDQMU
H7
NSRAS
H8 NSWE
Y18
NEMU0
V16
W17 NEMU1
L4
NFADV
NFBE_0 L3
M8
NFBE_1
M3
NFCS_1 Y1
NFCS_1B
NFCS_2 M4
NFCS_2B P3
N8
NFCS_3
U4
NFOE
MCSI2_DOUT
MCSI2_SYNC V9
MMC_CLK V11
MMC_CMD P11
R11
MMC_DAT0
V10
MMC_DAT1
MMC_DAT2 W10
W11
MMC_DAT3
U20 MPU_NRE-SET
1
NC1
NC2 2
Y6
P10
MCBSP2_DIN
AA5
MCBSP2_DOUT
MCBSP2_RSYNC W6
MCBSP2_XSYNC W7
MCSI1_BCLK
P14
MCSI1_DIN
V15
W14 MCSI1_DOUT
AA17 MCSI1_SYNC
Y10
MCSI2_CLK
MCSI2_DIN AA9
W9
D17 LCD_PIX-EL_8
D16 LCD_PIX-EL_9
LCD_VSYNC
B18
1
jR
E
T
L
I
F
_
O
D
L
G21 MCBSP1_BCLK
MCBSP1_CLKS
G20
MCBSP1_DIN
H20
H18 MCBSP1_DOUT
MCBSP1_SYNC
H15
V7
MCBSP2_CLKR
MCBSP2_CLKX
LCD_PIX-EL_11
G13 LCD_PIX-EL_12
A17 LCD_PIX-EL_13
C16 LCD_PIX-EL_14
D15 LCD_PIX-EL_15
C19 LCD_PIX-EL_2
LCD_PIX-EL_3
G14
H13 LCD_PIX-EL_4
LCD_PIX-EL_5
A20
B19 LCD_PIX-EL_6
LCD_PIX-EL_7
C18
G18
F19 KBR_1
KBR_2
H14
E20 KBR_3
KBR_4
E19
LCD_AC
B15
LCD_HSYNC
C20
C15 LCD_PCLK
D18 LCD_PIX-EL_0
LCD_PIX-EL_1
B21
C17 LCD_PIX-EL_10
B17
GPIO_62 M7
M15
GPIO_7
Y8
GPIO_8
GPIO_9 W8
F18 KBC_0
KBC_1
D20
D19 KBC_2
KBC_3
E18
C21 KBC_4
G19 KBC_5
KBR_0
GPIO_0
R19
GPIO_1
N20
GPIO_11
N18
GPIO_12
N19
GPIO_13
N21
GPIO_14
GPIO_15 M20
M14
GPIO_2
GPIO_3 P18
P20
GPIO_4
P19
GPIO_6
T4
FDATA_15 V3
N7
FDATA_2
P2
FDATA_3
FDATA_4 P4
P7
FDATA_5
FDATA_6 R2
R3
FDATA_7
FDATA_8 R4
T2
FDATA_9
V2
FRDY
R18
FADD_7 E3
J7
FADD_8
F3
FADD_9
FCLK N3
N4
FDATA_0
FDATA_1 N2
FDATA_10 T3
P8
FDATA_11
FDATA_12 U1
U3
FDATA_13
FDATA_14
FADD_2
FADD_20 F2
L8
FADD_21
FADD_22 K4
K3
FADD_23
FADD_24 L7
FADD_25 E1
FADD_3 C1
E4
FADD_4
FADD_5 D2
F4
FADD_6
J8
G4
FADD_10
FADD_11 G3
G2
FADD_12
FADD_13 K8
H4
FADD_14
FADD_15 H3
K7
FADD_16
FADD_17 J2
J4
FADD_18
FADD_19 J3
D3
CLK32K_IN
P13
CLK32K_OUT
R13
V5
COM_MCLK_OUT
R10
COM_MCLK_REQ
CONF
V18
G8 CS_SDRAM
CTS1
R14
Y5
CTS2
C14 DQS_H
D4 DQS_L
FADD_1
CAM_D_3
CAM_D_4 K18
J14
CAM_D_5
J19
CAM_D_6
J18
CAM_D_7
H19
CAM_EXCLK
L15
CAM_HS
J15
CAM_LCLK
M19
CAM_RSTZ
L18
CAM_VS
A11 CDD_DLL
U19 ARMIO_2
N15 ARMIO_3
V8
T19 ARMIO_4
ARMIO_5
T20
J20 ARM_BOOT
BDCLK2 Y4
BVLZ
W19
L19
CAM_D_0
K14
CAM_D_1
K15
CAM_D_2
K19
UCP100
AA15
0_STATE1
0_STATE2 Y14
0_STATE3 W5
V6
0_STATE4
0_STATE5 M18
ARMIO_1
VDD_30D
L102
L101
VDD_18D
C122
C130
C102
C114
VDD_18D
VDD_30D
R149
PWR_KEEP
BT_RXD
CD_CLK_12M
LDQM
MMC_LDO_ON
MMC_SENSE
SDA
JACK_SENSE
USB_nINSERTED
nCS_SDRAM0
NFCS_3
BT_TXD
SA(7)
SA(6)
SA(5)
SA(4)
SA(3)
SA(2)
SA(1)
SA(0)
SD(0:15)
SD(15)
SD(14)
SD(13)
SD(12)
SD(11)
SD(10)
SD(9)
SD(8)
SD(7)
SD(6)
SD(5)
SD(4)
SD(3)
SD(2)
SD(1)
SD(0)
nSCAS
nSWE
SCLK
UDQM
SCKE
BT_CTS
PH_ACTIVE
CAM_MCLK
CAM_PWR
BT_REQ
KB_LED_EN
SBANK_0
SBANK_1
SA(0:12)
SA(12)
SA(11)
SA(10)
SA(9)
SA(8)
FA(17)
FA(18)
FA(19)
FA(20)
FA(21)
FA(22)
FA(23)
FA(24)
FA(25)
FA(13)
AP_AT_nDSR
LCD_BACKLIGHT
PH_PWR_ON
PDA_ACTIVE
PDA_WAKEUP
PH_WAKEUP
CLK32K_OMAP
OMAP_TRST
FD(8)
FD(9)
FD(10)
FD(11)
FD(12)
FD(13)
FD(14)
FD(15)
FA(1:25)
FA(1)
FA(2)
FA(3)
FA(4)
FA(5)
FA(7)
FA(9)
FA(10)
FA(12)
FA(14)
FA(16)
nSRAS
BT_RTS
USB_DP
USB_DM
MODE_SW
SCL
FA(6)
FA(8)
FA(11)
FA(15)
PWR_HOLD
NFWE
NFOE
FD(0:15)
OMAP_RTCK
KB_nSCAN(3)
KB_nSCAN(2)
KB_nSCAN(1)
KB_nSCAN(0)
KB_nIN(4)
KB_nIN(3)
KB_nIN(2)
KB_nIN(1)
KB_nIN(0)
IIS_SCLK
IIS_LRCK
IIS_SDO
IIS_SDI
AP_AT_nDTR
CODEC_CSB
LCD_SCLK
LCD_R1
LCD_R0
LCD_G5
LCD_G4
LCD_G3
LCD_G2
LCD_G1
LCD_G0
LCD_B4
LCD_B3
LCD_B2
LCD_B1
LCD_B0
LCD_HSYNC
KB_nSCAN(5)
KB_nSCAN(4)
VDD_SHV2
CODEC_SCK
CODEC_SDO
CODEC_SDI
LCD_CS
VIB_EN
AP_AT_RXD
DEBUG_RXD
LCD_VDEN
LCD_VCLK
LCD_VSYNC
LCD_R4
LCD_R3
LCD_R2
LCD_nRESET
ANALOG_VDD_CTL
BT_nSHDN
MMC_SCLK
MMC_CMD
MMC_DAT
SW_RST_INT
FLASH_ON
OHP_nRESET
OMAP_TCK
OMAP_TDI
OMAP_TDO
OMAP_TMS
PUEN
CAM_PCLK
CAM_RESET
CAM_VSYNC
AP_AT_nCTS
FD(0)
FD(1)
FD(2)
FD(3)
FD(4)
FD(5)
FD(6)
FD(7)
LCD_SDI
SLIDE_LED_EN
PH_OFF_RDY
JACK_nSEND_END
FLIP_SENSE
ON_SW_SENSE
MMC_nInserted
AP_AT_nRTS
AP_AT_TXD
DEBUG_TXD
VID(0)
VID(1)
VID(2)
VID(3)
VID(4)
VID(5)
VID(6)
VID(7)
CAM_HSYNC

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-4
This Document can not be used without Samsung's authorization
D600
3
1
2
R604 C602
1
0
6
D
Z
C608
V_IN
13
2
TR603
C609
R609
U610
2
5
6
3
1
4
R605
VRTC
C601
2
R608
1
2
TR602
1
3
3
G
S
4
D601
3
TR600
12 5 6
VBAT
VDD_30D
RTC_nALARM
ON_SW_SENSE
JIG_ON
PWR_ON_AP
PWR_HOLD
VDD_30DV_IN
C607
D
N
G
N/C
5
8
N/C
N/C 7
VIN
110
VOUT1
VOUT2 9 EN1
EN2
3
6
GND
D
N
G
11 12
D
N
G
D
N
G
13 14
D
N
G
D
N
G
15 16
U605
4CBYP
2
C606
C604
VDD_18D
C605
1
GND
2
OUTVDD
3
U606
OHP_nRESETnBAT_LOW
7
1
6
C
L600
VDD_15D
8
1
6
C
8
4
NC
5
NC
9
PGND
SW
10
VIN
1
VOUT
6
7
AGND
2
AVIN
EN
3
11
GND
MODE/SYNC
U604
V_IN
nBAT_LOW

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-5
This Document can not be used without Samsung's authorization
2-1-2. Initial
UCP400 pin C16
(C410, C411)
=1.8V
Check U606
NO
YES
Initial Failure
UCP400 pin B14
(C406)
=3.0V Check the U500 and C516
NO
YES
Check and resolder SLIDE connector CN800
if there is solder bridhe between the pins
END
YES
YES
Check the U500 and C517
NO
YES
Check the clock
signals at
pin3 and pin5 of
OSC400
Freq=13MHz
Check the clock generation circuit
(OSC400)
NO
Check the pin C12
of U500 is "High" Check U500 and C514
NO
YES
Check the
pin 2 of
U606 is "High"

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-6
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-7
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-8
This Document can not be used without Samsung's authorization
R503
C512
C502
C505
C515
VCCD
C519
VCCD
7
GG
89
GG
10
TP500
SIM500
11
2
2
33
44
5
5
66
VCCD
C507
C506
R504
NGERV
31M PGERV
H11
VRTC
K12
VSIM
5G
1SSV
4K
2SSV
2R
3SSV
6P
4SSV
31R MCVXV
1D QANEOX
D10
VL5S_A
VL5S_BC9
G11
VLDO_1
J12
VLDO_2
A13
VLDO_3
B12
VLDO_4
B10
VLDO_5
A14
VLDO_6
C12
VLDO_7
A10
VREF
41R
6A
BDDV
11N
DDDV
11L
VDDV
5N
1OI_DDV
4J
2OI_DDV
4C
LTCO_DDV
E14
VEXT
F15
VIB_DRV
9L NE_GNR_BIV
A12
VL4S_A
B11
VL4S_B
UP_IO
R10
UP_RST
F14
VACC
VBATE13
3J
1DDV
J13
VDD12
3M
2DDV
6N
3DDV
VDD34C11
01C
5DDV
31B
76DDV
N7
SDO_PSC
C2SERCK
SERDA
C1
SERLE1
B1
A2SERLE2
K14
SIM_CLK
J11
SIM_IOK11
SIM_RST
7E PXT
N9
UP_CLK
P10
9K
F13
RING_DRV
H10
RTC_ALMN
4N KLC_CTR
RWN
L2
6D NIXTXR
7D PIXTXR
6C NQXTXR
7C PQXTXR
L8
SCLK_PSC
SDI_PSCM7
OCTL5
G6
B3OCTL6
OCTL7
A3
7L FUB_1WSP
9M PEEK_RWP
51C N1WS_RWP
41C 2WS_RWP
6B 1FERAR
5B 2FERA
R
RESETN_CSP
R3
O_TESER
51P NTUOCIM
51N PTUOCIM
01N EDOM
5CN 1
2
6CN
5P 7CN
E6OCTL0
OCTL1
C5
F5OCTL2
OCTL3
E5
OCTL4
A4
11F
RUCH_DNG
4B
LTCO_DNG
51B
1CSP_DNG
51K
2CSP_DNG
01L QRTNI
I|O
L3
G13
LED1_DRV
G12
LED2_DRV
6R CM
41M NNICIM
41N PNICIM
61SDNG
01K
71SDNG
8F
2SDNG
3SDNG 9F
01F
4SDNG
7G
5SDNG
8G
6SDNG
9G
7SDNG
01G
8SDNG
6H
9SDNG
31P
VDN
G
6F
BDNG
DDNG 01M
8E
QDNG
7F
1SDNG
7H
01SDNG
8H
11SDNG
21SDNG 9H
7J
31SDNG
8J
41SDNG
9J
51SDNG
01J
DB14
DB15
D2
K3DB2
DB3
J5
J6DB4
H5DB5
G3DB6
G4DB7
F4DB8
F1DB9
3P RTNID
K8
4R KCIAD
6L IDIAD
6M ODIAD
4P NR
IAD
K1DB0
DB1
K2
F2DB10
F3DB11
E2DB12
E3DB13
D3
21R PBTUOA
41L NNIXUA
51M PNIXUA
31L NTUOXUA
PTUOXUA
31K
31D
3CDA_XUA
E11
CH_BDRV
F12
CH_ISEN
D14
CH_RES
CREFE9
CSN_PSC
AB4
AB5
M2
M1AB6
AB7
K7
K5AB8
E10
ADC_AUX1
D15
ADC_AUX2
CFA
9D
21N NATUOA
11P PATUOA
21P NBTUOA
U500
K6AB0
AB1
P1
L5AB2
AB3
N1
N2
C511
VRF
R505
125C
2
NEG
1
POS
R502
BAT500
VRTC
VBAT
C510
C514
VCCA
TR500
1
3
2
C504
C520
C517
C513
R501
VCCB
VBAT
C503
VCC_1.8A
C501
225C
VCCA
C509
C508
C518
VCCD
C516
VTCXO
PH_PWR_ON
FLASH_RESET
TNI_PSD
PCS_RX_EN
CP_INT
PH_PWR_OFF
PTUOXUA
NTUOXUA
PNIXUA
NNIXUA
PWR_KEEP
NBTUOA
PBTUOA
RTX_IN
RTX_QP
RTX_QN
NATUOA
PTUOCIM
NTUOCIM
PATUOA
PNICIM
NNICIM
K23KLC
CM_M
31K
L
C
CP_RST
DSP_AB(0:8)
DSP_DB(0:15)
TX_BAND_SEL
SYN_EN
TX_EN
SERLE
SERDAT
SERCLK
AFC
TXPOWER
RTX_IP
DSP_DB(11)
DSP_DB(12)
DSP_DB(13)
DSP_DB(14)
DSP_DB(15)
DSP_DB(2)
DSP_DB(3)
DSP_DB(4)
DSP_DB(5)
DSP_DB(6)
DSP_DB(7)
DSP_DB(8)
DSP_DB(9)
DSP_IO
DSP_RWN
DCS_TX_EN
GSM_TX_EN
UP_CS
UP_SCLK
UP_SDO
UP_SDI
VREF
SIMRST
SIMCLK
SIMDATA
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)
DSP_DB(0)
DSP_DB(1)
DSP_DB(10)
R256
202V
102V
R259
R221
MIC+
C231
VDD_30CD
C226
R233
MIC
R254
C223
R226
R253
R255
R230
C232
R223
R231
R227
MIC2
AUXINP
MIC2N
AUXINN
AUXOUTN
MICINP
MIC1
MIC1N
MICINN
MICOUTN
MIC1N
AUXOUTP
MIC_BIAS
MICOUTP
MIC1

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-9
This Document can not be used without Samsung's authorization
VCC_1.8A
C422
R416
VRTC
R417
VCC_1.8A
TP400
R411
VCC_1.8A
R424
R414 C423
2
1
U
D12
XTIC_MODE
F
E
R
V
X0
1
F
R404
P15 XPA5/WAITN
XPA6/BE1N
T15
M9 XPA7/IRQ1
XPA8/IRQ2
T5
P2 XPA9/IRQ3
5
R1
M
W
P
X
E8
XRTCALARM_N
0
1
NK
L
C
_
0
M
S
X
A
T
A
D
_
0
M
S
X
1
E1
M
I
_
1
3
A
P
X
N
0
S
C
_
2
3
A
P
X4
1
H
A
Q
E
R
_
T
_
3
3
A
P
X
7
1
N
7
1
MB
Q
E
R
_
T
_
4
3
A
P
X
3
1
L
2
2
A
_
5
3
A
P
X
N
5
S
C
_
3
2
A
_
6
3
A
P
X5
1
N
N14 XPA3/CS4N
P16 XPA4/OEN
3
M0
M
O
_
5
2
A
P
X
2
G1
M
O
_
6
2
A
P
X
K
L
C
_
1
M
S
_
7
2
A
P
X
4
G
5
G0
M
O
I
_
8
2
A
P
X
1
M
O
I
_
9
2
A
P
X
1
F
XPA2/CS3N
M11
0
M
I
_
0
3
A
P
X
3
F
0
Q
R
D
_
7
1
A
P
X
3
1
PK
C
A
_
T
_
8
1
A
P
X
2
LI
S
O
M
_
P
C
/
9
1
A
P
X
XPA1/CS2N
M14
O
S
I
M
_
P
C
/
0
2
A
P
X
1
L
4
KK
C
S
_
P
C
/
1
2
A
P
X
6
JN
S
S
/
2
2
A
P
X
2
M
W
P
/
3
2
A
P
X
6
H
5
H3
M
W
P
/
4
2
A
P
X
M15 XPA0/CS1N
XPA10/IRQ4
N2
5
KX
R
A
D
R
I
/
1
1
A
P
X
X
T
A
D
R
I
/
2
1
A
P
X
1
N
6
G1
X
T
_
3
1
A
P
X
1
X
R
_
4
1
A
P
X
3
G
4
H0
X
T
/
5
1
A
P
X
0
X
R
/
6
1
A
P
X
3
L
4
E
3
N
7
DK
C
T
_
P
C
X
3
1
D
O
D
T
_
P
C
X
8
GS
M
T
_
P
C
X
N
T
S
R
T
_
P
C
X
9
F
XCP_WEN
C13
B
T
S
R
F
X
4
F
XOSC32OUT
C6
4
M2
N
I
S
/
2
B
K
_
P
C
X
3
N
I
S
/
3
B
K
_
P
C
X
1
T
2
R4
N
I
S
/
4
B
K
_
P
C
X
3
T0
T
U
O
S
/
5
B
K
_
P
C
X
3
U1
T
U
O
S
/
6
B
K
_
P
C
X
3
P2
T
U
O
S
/
7
B
K
_
P
C
X
4
T3
T
U
O
S
/
8
B
K
_
P
C
X
4
T
U
O
S
/
9
B
K
_
P
C
X
D6 XCP_D5
E7 XCP_D6
XCP_D7
D5
XCP_D8
C4
B4 XCP_D9
I
D
T
_
P
C
X
7
C
4
L0
N
I
S
/
0
B
K
_
P
C
X
5
L1
N
I
S
/
1
B
K
_
P
C
X
B3 XCP_D10
XCP_D11
C1
C2 XCP_D12
XCP_D13
D2
XCP_D14
D3
E3 XCP_D15
XCP_D2
F8
F7 XCP_D3
XCP_D4
C5
A15 XCP_A7
B17 XCP_A8
XCP_A9
C17
XCP_CSRAMEN
A13
A12 XCP_CSROMEN
A6 XCP_D0
XCP_D1
B5
L14 XCP_A19
E14 XCP_A2
L15 XCP_A20
XCP_A21
L16
XCP_A3
D15
XCP_A4
B15
C14 XCP_A5
XCP_A6
A16
F14 XCP_A11
G14 XCP_A12
XCP_A13
G13
G17 XCP_A14
XCP_A15
J12
XCP_A16
K12
K13 XCP_A17
XCP_A18
K14
XAG1 A11
E11
XAG2
XAG3 D11
B7
XBSWN
M12
XCPTSTSTOP_CKO
XCP_A0_BEON
B13
XCP_A1
F11
XCP_A10
D16
7
H
S
S
V
S
S
V1
1
H
S
S
V7
J
S
S
V6
K
A
S
S
V0
1
E
L
L
P
D
_
S
S
V5
1
E
A7
X1RTC D10
X2RTC
XAG0 B11
7
M
S
S
V
S
S
V8
L
S
S
V1
1
J
9
L
S
S
V
S
S
V3
A
S
S
V6
F
9
G
S
S
V
S
S
V0
1
G
6
1
E
E
D
D
V
E
D
D
V7
1
E
6
1
G
L
L
P
D
_
D
D
V
8
D
C
T
R
V
2
A
S
S
V
7
K
S
S
V
6
L
S
S
V
S
S
V0
1
L
E
D
D
V4
1
B
1
M
E
D
D
V
E
D
D
V2
U
8
P
E
D
D
V
E
D
D
V5
1
U
6
1
U
E
D
D
V
E
D
D
V6
1
N
1
R
D
D
V
D
D
V4
R
3
1
T
D
D
V
D
D
V6
1
R
7
1
R
D
D
V
D
D
V5
A
6
1
C
D
D
V
1
1
C
A
D
D
V
E
D
D
V1
B
TCK
TDI H12
TDO F12
TMS G12
F15
TRST
2
E
D
D
V
D
D
V7
1
L
D
D
V1
G
INT#0 N4
IO7 R12
IOBIT#1 K11
L12
IOBIT#2
1
C
N
C
N2
2
1
C
B
T
S
R
U5
RWN
H13
DB#2 R6
P6
DB#3
DB#4 U7
DB#5 T7
R7
DB#6
DB#7 M6
DB#8 P7
N7
DB#9
DB#1 U6
DB#10 N8
DB#11 M8
U11
DB#12
DB#13 T11
DB#14 R11
P10
DB#15
AB#3 N11
P11
AB#4
AB#5 P12
R14
AB#6
T14
AB#7
AB#8 T17
I
K
C7
1
F
CKO G15
P5
DB#0
UCP400
AB#0 U13
M10
AB#1
AB#2 R13
TP401
TP402
R425
C424
VCCD
R408
R413
R401
VCCD
VCCD
R423
VBAT
R410
C406
R415
3
GND
VO
21
VS
U402
C411
VCCB
OSC401
VCCD
R405
C410
DSP_AB(5)
DSP_AB(4)
DSP_AB(3)
DSP_AB(2)
DSP_AB(1)
DSP_AB(0)
CP_TCK
CP_TMS
CP_TDI
CP_TDO
C407
DSP_DB(4)
DSP_DB(3)
DSP_DB(2)
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(1)
DSP_DB(0)
CLK13M_TR
DSP_AB(8)
DSP_AB(7)
DSP_AB(6)
ARM_TRSTN
DSP_RWN
TR_RST
DSP_IO
DSP_INT
DSP_DB(9)
DSP_DB(8)
DSP_DB(7)
DSP_DB(6)
DSP_DB(5)
D(13)
D(12)
D(11)
D(10)
D(1)
D(0)
CP_CSROMEN
CP_CSRAMEN
A(9)
A(8)
A(7)
A(6)
A(5)
A(4)
A(3)
A(21)
A(20)
A(2)
A(19)
A(18)
A(17)
A(16)
A(15)
A(14)
A(13)
A(12)
A(11)
A(10)
A(1)
A(0)
TR_RST
UP_SCLK
UP_SDO
UP_SDI
PH_PWR_OFF
BT_REQ
AT_RXD
AT_TXD
SDS_RXD
SDS_TXD
PH_OFF_RDY
PDA_ACTIVE
PH_WAKEUP CLK32K
FLASH_RESET
CP_WEN
D(9)
D(8)
D(7)
D(6)
D(5)
D(4)
D(3)
D(2)
D(15)
D(14)
VREF
SIMDATA
SIMCLK
RTC_nALARMJACK_SENSE
CP_INT
UPPER_BYTE
CP_OEN
A(23)
A(22)
SW_RST_INT
AT_nRTS
PDA_WAKEUP
AT_nCTS
AT_nDSR
PH_ACTIVE
SIMRST
SVC_LED_EN
UP_CS
EAR_SEL
AT_nDTR
DSP_DB(0:15)
D(0:15)
A(0:20)
DSP_AB(0:8)
ARM_TRSTN

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-10
This Document can not be used without Samsung's authorization
2-1-3. Sim Part
YES
YES
YES
YES
Check the SIM
connector's
(SIM500)
Check the circuit related to
U500
NO
resolder or change
SIM500
NO
Check the related circuit of
SIM500
NO
Phone can't access
SIM card
Check the circuit around
U500 output
and voltage supply circuitry
END
Check the pin 1 of
SIM500
Voltage = 3V
Check the circuit around SIM500
input circuitry
Check the related circuit of
U500
NO
C502
C505
VCCD
7
GG
89
GG
10
SIM500
11
22
33
44
5
5
66
C507
C506
H11
K12
1
O
I
_
D
D
V
UP_IO
R10
UP_RST
3
J
1
D
D
V
J13
VDD12
3
M
2
D
D
V
6
N
3
D
D
V
VDD34 C11
0
1
C
5
D
D
V
3
1
B
7
6
D
D
V
K14
SIM_CLK
J11
SIM_IO K11
SIM_RST
N9
UP_CLK
P10
1
1
F
R
U
C
H
_
D
N
G
5
1
B
1
C
S
P
_
D
N
G
5
1
K
2
C
S
P
_
D
N
G
8
E
Q
D
N
G
C510
VBAT
C503
C509
C508
SIMRST
SIMCLK
SIMDATA

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-11
This Document can not be used without Samsung's authorization
2-1-4. Camera Part
Change Camera Module
NO
Change U603
NO
Check R122
NO
YES
YES
Camera does not work
END
Check Camera FPCB
Check the Voltage
Pin 5, 6 of U603
(Pin5=1.5V,Pin6=2.8V)
Check Pin 18 of CN801
(Frequency = 24Mhz)
YES
1.CLKSEL
3.STANDB
6.FLASH(OPEN)
R810
100
2
1
8
R
8
0
8
R
CAM_15DCAM_28D CAM_28D
C816
C819
99
24 24
33 44
55 6
6
77 88
16 16
1717 18
18
19 19
2
2
20 20
2121 22
22
23 23
11
10
10
11 11 12 12
1313 14
14
15 15
CN801
4
1
8
R
CAM_28D
7
0
8
R
CAM_MCLK
VID(1)
VID(7)
VID(6)
VID(3)
VID(2)
VID(4)
SCL
CAM_PCLK
CAM_HSYNC
VID(5)
CAM_VSYNC
SDA
VID(0)
CAM_RESET
V_IN
3
1
6
C
4
1
6
C
5
1
6
C
CAM_28DCAM_15D
EN1
3
1EN2
D
N
G
7
2VIN 5
VOUT1
6
VOUT2
4
VSS
U603
CAM_PWR

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-12
This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-13
This Document can not be used without Samsung's authorization
2-1-5. Charging Part
Check IFC300
NO
Check IFC300
NO
YES
YES
Abnormal charging part
END
Check the pin 21,22 of
IFC300 is Vbat
Check the pin 4, 19 of
IFC300
is GND

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-14
This Document can not be used without Samsung's authorization
VBAT
R323
R317
VDD_USB
2
0
3
D
Z
0
1
3
V
R320
VDD_30D
R315
R321
5
0
3
C
6
DXOUT
DYIN
34
DYOUT
2GND 5
VBUS
U304
1DXIN
7
7
88
9
9
NC
25
26 NC
21
22
22
23 23
24
24
3
3
44
5
5
66
14
14
15 15
16
16
17 17
18
18
19 19
22
20
20
21
IFC300
1
1
10 10
11 11
12
12
13 13
R353
R319
R301
0
0
3
D
Z
C302
R354
R355
R356
R351
ZD301
1
2
34
5
6
7
8
VCCD
R302
R352
OMAP_TRST
OMAP_TCK
JIG_ON
USB_DP
USB_DM
PUEN
OMAP_TDO
OMAP_TDI
OMAP_TMS
OMAP_RTCK
BP_VF
MODE_SW
SDS_RXD
SDS_TXD
DEBUG_RXD
DEBUG_TXD

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-15
This Document can not be used without Samsung's authorization
2-1-6 Audio-Microphone Part
Check the reference
voltage on mic path
C231=1.9V
Reassemblage microphone
NO
resolder or change
(R259,C223,R223,C231,R233)
NO
Check U500
NO
YES
YES
Microphone does not work
END
YES
Check the assembled
status of microphone.
Is microphone ok?
R256
2
0
2
V
1
0
2
V
R259
R221
MIC+
C231
VDD_30CD
C226
R233
MIC
R254
C223
R226
R253
R255
R230
C232
R223
R231
R227
MIC2AUXINP
MIC2NAUXINN
AUXOUTN
MICINP
MIC1
MIC1NMICINN
MICOUTN
MIC1NAUXOUTP
MIC_BIAS
MICOUTP
MIC1

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-16
This Document can not be used without Samsung's authorization
2-1-7. Audio-Receiver Part
NO
NO
YES
YES
receiver does not work
END
Check the connection
status spk to
CN101/CN800
Check the
R236, R239
Is receiver ok?
YES
Change receiver
NO
Resolder and check the board
to board connector
Change or resolder
R236, R239
C811
V_IN
C806
V_IN
VBAT
C807
C805
C809R809
58
59
59
66
60
60
778 8
99
51
5152
52
53
5354
54
55
5556
56
57
5758
44
44
45
4546
46
47
4748
48
49
49
55
50
50
36
37
37
38 38
39
39
44
40 40
41
4142
42
43
43
29
33
30 30
31
31
32 32
33
33
34 34
35
35
36
21
22 22
23
23
24 24
25
25
26
26 27
27
28
28 29
15
15
16 16
17
17
18 18
19
19
22
20 20
21
11
10 10
11
11
12 12
13
13
14 14
CN800
LCD_VSYNCA
LCD_CSA
LCD_BACKLIGHT
SOUND_EN
RCV+
RCV-
KB_nSCAN(3)
KB_nSCAN(5)
KB_nSCAN(4)
KB_nIN(3)
KB_nIN(2)
KB_nIN(1)
KB_nIN(0)
KB_nIN(4)
PWR_ON_AP
CODEC_OUT_L
LCD_nRESETA
LCD_SDIA
LCD_VDENA
LCD_VCLKA
LCD_HSYNCA
G2
G1
G0
B4
B3
B2
B1
B0
LCD_SCLKA
CODEC_OUT_R
CODEC_AGND_R
R4
R3
R2
CODEC_AGND_L
SVC_SLIDE_LED
R1
R0
G5
G4
G3

SAMSUNG Proprietary-Contents may change without notice
SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams
2-17
This Document can not be used without Samsung's authorization
R239
R236
VDD_30D
C219
R209
C249C248
C253
VDD_30D
C217
VDD_30CD
J6 MCLK
J7 DCVDD
J8 PCMCLK
J9
GP2/CLK2
H6 DBVDD
H7
DGND
H9
PGND
J1 VXDIN
J2
VXDOUT
J3
VXFS
J4
BCLK
J5
ADCDAT
G1 SDIN
G2
NC
G8
GP1/CLK1
G9 PVDD
H1 SCLK
H3
VXCLK
H4
LRC
H5 DACDAT
E1 GPIO4
E2 MIC2N
E8
OUT3
E9
OUT4
F1 MODE/GPIO3
F2 CSB/GPIO5 F8
NC
F9 HPVDD
C1 MIC1
C2 RXN
C8
NC
C9 HP/SPKRGND
D1 MIC2
D2 MIC1N
D8
LOUT1
D9
ROUT1
A9
LOUT2
B1 RXP
B3
ACOP
B4
MICBIAS
B5 VREF
B6
MONO1
B7
MONO2
B9
ROUT2
A1 LINE2
A2 LINE1
A3 ACIN
A4 VMID
A5
AGND
A6 AVDD
A7
NC
A8 SPKRVDD
UCD203
NC 1
NC 2
C201
C202
R210
C204 C203
C213
0
0
1
F
C218
C205
C206
MICN
MICP
RCV-
CODEC_AGND_L
CODEC_CSB
CODEC_SDI
CODEC_EAR_L
CODEC_OUT_LVOICE_INP
CODEC_EAR_RVOICE_INN
CODEC_OUT_R
MIC1
MIC_BIASWHS_MIC_P
MIC1N
WHS_MIC_N
CLK_SEL
CODEC_SCK
BT_DIN
CODEC_SDO
CODEC_AGND_R
BT_BCLK
BT_SYNC
IIS_LRCK
IIS_SCLK
BT_DOUT
IIS_SDI
SOUND_EN
EAR_SELIIS_SDO
RCV+CD_CLK_12M