Samsung SGH-D720 Service 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. GSM General Specification

GSM900

P h ase 1

Fr eq. B an d [M Hz]

U plink/Downlink

ARFCN r a n ge 1~ 124

Tx/Rx spaci n g 45MH z 45MH z 95MHz 80MHz

Mod. Bi t rat e/

Bi t Period

Ti me Slo t

P erio d/ F rame

P e riod

Modul ation 0.3 GM SK 0. 3GMSK 0.3GMSK 0.3GMSK

MS P o wer 33dBm ~13dBm 33dBm~ 5dBm 30dBm ~0dBm 30dBm ~0dBm

890~915 935~960

270. 833kbps

3. 692us

576. 9us

4. 615ms

EGSM 900

P h as e 2

880~ 915 925~ 960

0~ 124 &

975~ 1023

270.833k bps

3. 692us

576.9us

4. 615ms

DCS1800

Phas e 1

1710~ 1785 1805~ 1880

512~ 885 512~810

270. 833kbps

3. 692us

576. 9us

4. 615ms

P C S1 9 0 0

1850~1910 1930~1990

270. 833kbps

3. 692us

576. 9us

4.615m s

Powe r Class 5pc l ~ 15pcl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl

Se nsitivity - 1 0 2 dB m -102dBm -100dBm -100dBm

TDMA Mux 8 8 8 8

Cel l Rad iu s 35Km 35Km 2Km -

1

1-

SGH-D720 Speclflcation

1-2. GSM Tx Power Class

TX Power

control level

5 33± 2 dBm

6 31± 2 dBm

7 29± 2 dBm

8 27± 2 dBm

9 25± 2 dBm

10 23± 2 dBm

11 21± 2 dBm

12 19± 2 dBm

13 17± 2 dBm

14 15± 2 dBm

15 13± 2 dBm

16 11± 3 dBm

17 9± 3dBm

18 7± 3 dBm

19 5± 3 dBm

GSM900

TX Power

control level

0 30± 3 dBm

1 28± 3 dBm

2 26± 3 dBm

3 24± 3 dBm

4 22± 3 dBm

5 20± 3 dBm

6 18± 3 dBm

7 16± 3 dBm

8 14± 3 dBm

9 12± 4 dBm

10 10± 4 dBm

11 8± 4dBm

12 6± 4 dBm

13 4± 4 dBm

14 2± 5 dBm

DCS1800

TX Power

control level

0 30± 3 dBm

1 28± 3 dBm

2 26± 3 dBm

3 24± 3 dBm

4 22± 3 dBm

5 20± 3 dBm

6 18± 3 dBm

7 16± 3 dBm

8 14± 3 dBm

9 12± 4 dBm

10 10± 4 dBm

11 8± 4dBm

12 6± 4 dBm

13 4± 4 dBm

14 2± 5 dBm

PCS1900

15 0± 5 dBm

2

1-

15 0± 5 dBm

2. SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

2-1.Baseband

2-1-1. Power ON

'Power On' does not work

Check the current

consumtion more than

100mA

YES

Check the Vbat(battery+O)

Voltagemorethan3.3V

YES

Check the pin

4ofTR600ismore

than 3.3V

YES

Check the pin

1ofTR600ismore

than 3.3V

YES

UCP100 pin A19

=3.0V

YES

NO

Downloader again

Charge the Battery

Check BTC300, C308 and C307

Check TR600, TR602 and D601

Check U605 and C606

UCP100 pin B14

=1.8V

YES

UCP100 pin A15

=1.6V

YES

Check the clock signal

at pin1 of OSC100

Freq=12MHz

YES

'Power On' does not work

END

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

NO

2-

28

Check U605 and C605

Check U604 and C618

Check the clock generation circuit

(OSC100)

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

2-2

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

CODEC_CSB

LCD_SCLK

CODEC_SDO

nSCAS nSWE

nCS_SDRAM0

LDQM

SCLK UDQM

SCKE

C128

VDD_30D

VDD_15D

R102

VDD_18D

R129

MMC_SENSE

R143

VDD_SHV2

VDD_18D

VDD_30D

TR101

VDD_18D

L102

R103

3

1

2

MODE_SW

C133

CD_CLK_12M

FD(0:15)

FA(1:25)

nSRAS

1

HOT

C121

GND2

4

C122

R128

R113

2

GND1

HOT

3

OSC100

PUEN USB_DP USB_DM

R114

VDD_18D

VDD_30D

C115

C116

PH_ACTIVE

OHP_nRESET

MMC_SCLK MMC_CMD BT_nSHDN PWR_HOLD

SW_RST_INT MMC_DAT

MMC_LDO_ON ANALOG_VDD_CTL LCD_nRESET PWR_KEEP

PDA_ACTIVE BT_RTS BT_TXD AP_AT_nRTS AP_AT_TXD DEBUG_TXD

OSC101

NFWE

NFOE NFCS_3

1

2

VDD_18D

R118

CAM_MCLK

CAM_PCLK

VID(7) VID(6) VID(5) VID(4) VID(3) VID(2) VID(1)

VID(0) CAM_VSYNC CAM_HSYNC

CAM_RESET

KB_LED_EN

LCD_BACKLIGHT

PH_OFF_RDY

SLIDE_LED_EN

JACK_SENSE

USB_nINSERTED

MMC_nInserted

ON_SW_SENSE

PDA_WAKEUP

FLIP_SENSE

JACK_nSEND_END

LCD_SDI

AP_AT_nCTS

R125

FD(15) FD(14) FD(13) FD(12) FD(11) FD(10)

FD(9) FD(8) FD(7) FD(6) FD(5) FD(4) FD(3) FD(2) FD(1) FD(0)

FA(25) FA(24) FA(23) FA(22) FA(21) FA(20) FA(19) FA(18) FA(17) FA(16) FA(15) FA(14) FA(13) FA(12) FA(11) FA(10)

FA(9) FA(8) FA(7) FA(6) FA(5) FA(4) FA(3) FA(2) FA(1)

L101

FLASH_ON

C132

VDDSHV2 VDDSHV3

VDDSHV6 VDDSHV7 VDDSHV8 VDDSHV9

ON_NOFF

MMC_CLK

MMC_CMD

MCSI2_DIN

0_STATE1 0_STATE2 0_STATE3 0_STATE4 0_STATE5

BDCLK2

USB_PUEN

USB_DP USB_DM OSC1_IN

OSC1_OUT

NFCS_3 NFCS_2

NFCS_1 NFCS_1B NFCS_2B

NFBE_1

NFBE_0

CAM_LCLK

CAM_D_7 CAM_D_6 CAM_D_5 CAM_D_4 CAM_D_3 CAM_D_2 CAM_D_1 CAM_D_0

CAM_VS CAM_HS

CAM_RSTZ

GPIO_62 GPIO_15 GPIO_14 GPIO_13 GPIO_12 GPIO_11

GPIO_9

GPIO_8

GPIO_7

GPIO_6

GPIO_4

GPIO_3

GPIO_2

GPIO_1

GPIO_0

FDATA_15 FDATA_14 FDATA_13 FDATA_12 FDATA_11 FDATA_10

FDATA_9 FDATA_8 FDATA_7 FDATA_6 FDATA_5 FDATA_4 FDATA_3 FDATA_2 FDATA_1 FDATA_0

FADD_25 FADD_24 FADD_23 FADD_22 FADD_21 FADD_20 FADD_19 FADD_18 FADD_17 FADD_16 FADD_15 FADD_14 FADD_13 FADD_12 FADD_11 FADD_10

FADD_9

FADD_8

FADD_7

FADD_6

FADD_5

FADD_4

FADD_3

FADD_2

FADD_1

NSRAS

D E V R E S E R

5 e

VDD_30D

A19 E21 AA2 Y7 B14 B10 A7 A5 R1 H2 C2 AA11 Y16 L21 U21 V12

W13 Y12 R12 P12 V11 P11 Y10 AA9 W9 W11 W10 V10 R11 V9 P10 W7 V7 Y6 W6 AA5 AA15 Y14 W5 V6 M18 Y5

CTS2

R10 V5 Y4 W4 P9 R8 Y2 W3

V4

NFWP

W2

NFWE

W1

NFRP

U4

NFOE

N8 M4 M3 Y1 P3 M8 L3 L4

NFADV

V2

FRDY

N3

FCLK

R122

H19 J15 J18 J19 J14 K18 K19 K15 K14 L19 L18 L15 M19

M7 M20 N21 N19 N18 N20 W8 Y8 M15 P19 P20 P18 M14 R19 R18

V3 T4 U3 U1 P8 T3 T2 R4 R3 R2 P7 P4 P2 N7 N2 N4

E1 L7 K3 K4 L8 F2 J3 J4 J2 K7 H3 H4 K8 G2 G3 G4 F3 J7 E3 F4 D2 E4 C1 D3 J8 H7 1

NC1

2

NC2

R144

C131

C130

VDD_15D

C102

C103

C114

SA(0:12)

SD(0:15)

VDD_30D

R110

R112R109R108

R107

C123

SCL SDA

R111

BT_RXD

AP_AT_RXD

DEBUG_RXD

LCD_VDEN

OMAP_TDI OMAP_TDO OMAP_TMS

OMAP_TCK

OMAP_TRST

OMAP_RTCK

BT_REQ

CAM_PWR

PH_WAKEUP

BT_CTS

CLK32K_OMAP

CODEC_SDI

CODEC_SCK

LCD_CS

PH_PWR_ON

AP_AT_nDSR

VIB_EN

LCD_VCLK

LCD_VSYNC

LCD_HSYNC

KB_nSCAN(5) KB_nSCAN(4) 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

AP_AT_nDTR

R142

LCD_R4 LCD_R3 LCD_R2 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

IIS_SDO IIS_SDI

C127

C101

R101

SD(0) SD(1) SD(2) SD(3) SD(4) SD(5) SD(6) SD(7) SD(8) SD(9) SD(10) SD(11) SD(12) SD(13) SD(14) SD(15)

SBANK_1

SBANK_0

R149

L1

VPP

Y21

VDDA

A15

VDD_1

Y20

VDD_2

Y9

VDD_3

M2

VDD_4

AA3

VDD1

A3

VDD2_1

A9

VDD2_2

E2

VDD2_3

B13

VDD3_1

B20

VDD3_2

J21

VDD3_3

R20

VDD3_4

W12

VDD_RTC

A11

CDD_DLL

A2

SA(0)

SADD_0

B2

SA(1)

SADD_1

B6

SA(2)

SADD_2

A1

SA(3)

SADD_3

G10

SA(4)

SADD_4

B9

SA(5)

SADD_5

G12

SA(6)

SADD_6

G11

SA(7)

SADD_7

G9

SA(8)

SADD_8

B12

SA(9)

SADD_9

B8

SA(10)

SADD_10

H10

SA(11)

SADD_11

H9

SA(12)

SADD_12

H11

SADD_13

D6

SDATA_0

C6

SDATA_1

C5

SDATA_2

D7

SDATA_3

D5

SDATA_4

C7

SDATA_5

C4

SDATA_6

D8

SDATA_7

C10

SDATA_8

D14

SDATA_9

D11

SDATA_10

C13

SDATA_11

C11

SDATA_12

D13 D12 C12

C3 D4 B3 B4 H8 G8 C8 D9

C9 D10 C14 H12 J20

V14

R9 L14

B15 C15 B18 D15 C16 A17 G13 B17 C17 D16 D17 C18 B19 A20 H13 G14 C19 B21 D18 C20

G19 C21 E18 D19 D20 F18 E19 E20 H14 F19 G18

G20 G21 H15 H18 H20

T20 T19

V8 N15 U19 U20 T18 V20 U18 W21 V19 N14 P15 W16 W19

AA20

V18 Y19

AA19

V17 W18 Y18 V16 W17 Y17

AA17

P14 W14 V15 W15 Y15 R14 P13 R13

SDATA_13 SDATA_14 SDATA_15

SBANK_1 DQS_L SBANK_0 NSCAS NSWE CS_SDRAM NSDQML SDCLKX SDCLK NSDQMU DQS_H SDCLK_EN ARM_BOOT

RX1 RX2 RX3

LCD_AC LCD_PCLK LCD_VSYNC LCD_PIX-EL_15 LCD_PIX-EL_14 LCD_PIX-EL_13 LCD_PIX-EL_12 LCD_PIX-EL_11 LCD_PIX-EL_10 LCD_PIX-EL_9 LCD_PIX-EL_8 LCD_PIX-EL_7 LCD_PIX-EL_6 LCD_PIX-EL_5 LCD_PIX-EL_4 LCD_PIX-EL_3 LCD_PIX-EL_2 LCD_PIX-EL_1 LCD_PIX-EL_0 LCD_HSYNC

KBC_5 KBC_4 KBC_3 KBC_2 KBC_1 KBC_0 KBR_4 KBR_3 KBR_2 KBR_1 KBR_0

MCBSP1_CLKS MCBSP1_BCLK MCBSP1_SYNC MCBSP1_DOUT MCBSP1_DIN

ARMIO_5 ARMIO_4 ARMIO_3 ARMIO_2 ARMIO_1 MPU_NRE-SET SCL SDA WIRE_SDI WIRE_SDO WIRE_SCLK Z_STATE1 Z_STATE2 Z_STATE3 BVLZ NRE-SET_OUT CONF TDI TDO TMS TCK NTRST NEMU0 NEMU1 RTCK MCSI1_SYNC MCSI1_BCLK MCSI1_DOUT MCSI1_DIN UARTS_CLKREQ UARTS_CLKIO CTS1 CLK32K_IN CLK32K_OUT

1 S S V 5 B

UCP100

0

1

2

1

9

3

4

2

5

6

7

8

S

V

3

1

0

7

3

7

1

6

0

1

2

1

2

1

2

A

B

F

Y

A

B

K

R

A

W

A

C129

VDDSHV1_1 VDDSHV1_2

VDDSHV4_1 VDDSHV4_2 VDDSHV4_3 VDDSHV4_4 VDDSHV5_1 VDDSHV5_2 VDDSHV5_3

VDDSHV_RTC

WA-KEUP_INT

NRESPWRON

RE-SET_MODE

MCSI2_CLK

MCSI2_DOUT

MMC_DAT3 MMC_DAT2 MMC_DAT1

MMC_DAT0 MCSI2_SYNC MCBSP2_DIN

MCBSP2_XSYNC

MCBSP2_CLKR MCBSP2_CLKX

MCBSP2_RSYNC

MCBSP2_DOUT

COM_MCLK_REQ COM_MCLK_OUT

CAM_EXCLK

T

R

U

N

E

O

I

T

_

L

K

I

2

F

7

8

6

9

3

4

5

3

_

1

C

S

O

S

D

O

V

L

V

3

2

1

3

1

2

1

j

1

Y

K

N

B

U

A

G

v

A

2-3

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

RTC_nALARM

VRTC

C607

4

5

6

C604

U610

VBAT

R604

3

2

1

R605

V_IN

12 5 6

3

TR600

G

4

S

TR602

3

1

2

U605

VIN

110

EN1

2

EN2

3

CBYP

4

N/C

5

11 12

VOUT1

VOUT2

9

N/C

8

N/C

7

GND

6

D

D N G

13 14

D N G

15 16

D

N

G

D N G

1 0 6 D Z

3

C608

VDD_18D

C605

D600

D601

C601

VDD_30DV_IN

C602

1

2

1

2

C606

C609

3

PWR_HOLD

JIG_ON

U606

GND

1

TR603

R609

OUTVDD

VDD_30D

R608

3

2

PWR_ON_AP

2

ON_SW_SENSE

OHP_nRESETnBAT_LOW

nBAT_LOW

V_IN

U604

1

VIN

2

AVIN

EN

3

MODE/SYNC

4

7 1 6

C

NC

5

NC

GND

SW

PGND

AGND

VOUT

10

9

8

7

6

L600

11

2-4

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

VDD_15D

8 1 6

C

2-1-2. Initial

Initial Failure

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

Check the

pin 2 of

U606 is "High"

YES

UCP400 pin B14

(C406) =3.0V

YES

UCP400 pin C16

(C410, C411)

=1.8V

YES

Check the clock

signals at

pin3 and pin5 of

OSC400

Freq=13MHz

YES

NO

Check U606

Check the U500 and C516

Check the U500 and C517

Check the clock generation circuit

(OSC400)

Check the pin C12

of U500 is "High"

YES

Check and resolder SLIDE connector CN800

if there is solder bridhe between the pins

YES

END

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

NO

Check U500 and C514

2-5

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

2-6

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

2-7

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

A

M

U

A

X

U

O

X

U

I

N

T

N

P

R

2

5

6

3

R

2

5

4

R

T

X

_

Q

I

Q

N

P

N

M

I

C

C 2

2

M

N

I

C 1 N

PATUOA NATUOA PBTUOA

R 2

NBTUOA

3 3

PNICIM NNICIM PTUOCIM

102V

NTUOCIM PNIXUA

202V

NNIXUA PTUOXUA NTUOXUA

3

2

T R 5 0 0

1

P

C

P

H

P

_

P

R

P

W

S T

R

_

O

N

F F

M

I

C

M

C

M

O

I

C

U

I

N

T

N

P

R

2

3

2

1

6

R

2

3

7

0

R T X _ I

P

M I

C 1 N

M I

C 1

C 2 3 2

C 2 3 1

M

I

C

+

T X P O W

A

E

F C

R

M I

C _ B I

A S

C 5 2

M

0

I

C 1

R 2 5 9

C

C 2

2

3

6

R 2 2 3

125C 225C

K23KLC

31KLC

CM_M

TNI_PSD

R 5 0 5

P

C

W

P _

R

I N

_ K

T E E P

S E R C L K

9D

CFA

7E

PXT

5B

R

2FERA

6B

1FERAR

7D

PIXTXR

6D

NIXTXR

V D

7C

PQXTXR

D _ 3

6C

0

NQXTXR

C

R

D

2 2 1

11P

PATUOA

21N

NATUOA

21R

PBTUOA

21P

NBTUOA

41N

PNICIM

41M

NNICIM 51N 51P 51M

PNIXUA

41L

NNIXUA 31K 31L 31R

MCVXV

31M

PGERV

41R

NGERV

4R

KCIAD

4P

IAD

NR

6L

IDIAD

6M

ODIAD

4N 1D

QANEOX

6R

CM

5P

7CN

3P

RTNID

41C 51C 7L 9K

O_TESER

01N

EDOM 9M 01L

QRTNI

R

9L

T C _ A L M N

C 5 1 9

T X _ B A

S

N

S

E

D

S

Y

T

R

_

E

N

X

S

D

R

_

E

A

L

N

E

N

T

C

B

A

A 2

3

1

3

2

1

S

O

S

O

S

E

C

R

T

C

D

L

E

7

6

K

A

2

1

PTUOCIM NTUOCIM

PTUOXUA NTUOXUA

KLC_CTR

2WS_RWP

N1WS_RWP FUB_1WSP

PEEK_RWP

A

D

NE_GNR_BIV

C

H

_

A

C

V

_

I

U

S

R

E

X

E

N

2

1

S

F

E

D

E

A

D

H

9

1

0

5

4

0

T P 5 0 0

V R E F

F L A

P

S

C

D

H

S

_

_ R X _ E N

R 5 0 3

G

A 4

6

O

C

T

L

5

4

C H _ B

V

D

B

R

A

V

T

F

E

1

2

1

D

P

R

_

S

E

R

P

S

W

_

E

I

T

O

N

D

S

P

_

A

B

(

1

0

)

R

K

C

E

L

F 5

5

O

C

T

L

2

3

V E X T

E

1

3

4

R 5 0 2

6

3

2

6

3

5

R

I

A

O

A | O

B

E

W

C

C T L 1

1

0

S

T

N

E

L 0

T N _ C S P

S

C

S

D

S

L

V

D

K

O

N

L

I

V

_

D

_

P

A

P

O

S

C

S

_

C

1

F

M

G

N

L

K

8

1

8

7

1

7

4

1

U

P

_

S

D

C

I

O

L K

V B A T

C 5 1 8

D

S

P

_

A

B

(

8

7

3

6

2

5

4

)

M

K

N

P

L

7

5

1

2

1

2

A

B

6

5

8

4

7

3

2

U 5

0 0

V

L

D

4

5

S

O

_

B

A

5

4

3

2

B

J

A

1

2

0

1

2

3

G

D C

S M

S _

_

T

X

_

E

N

D S P _ A B (

0 : 8 )

D

S

P

_

D

B

(

2

0

1

)

K

5

2

3

1

D

B

1

0

2

V

I B

L

_

D

5

D

S

O

R

_

B

V

7

6

A

C

D

1

9

1

4

2

0

D

S

P

_

D

B

(

1

8

7

6

5

4

3

1

9

1

)

0

2

)

G

H

F

J

5

6

3

2

5

4

3

4

1

D

B

3

4

R I

N G _ D R V

F 1 5

D

B

1

5

6

7

8

9

1

0

L

E

S

D

I

M

S

2

1

_

_ D R V

F 1 3

I

V

_

M

V

D

C

R

S

_

R

L

T

S

I

M

K

O

V

C

T

K

H

K

G

1

2

4

1

2

3

D S P _ D B (

0 : 1 5 )

D

S

P

_

D

B

(

1

5

4

3

)

D

E

3

2

3

2

D

B

1

3

2

5

4

2

6CN

1

5CN

01K

71SDNG

01J

61SDNG

9J

51SDNG

8J

41SDNG

7J

31SDNG

9H

21SDNG

8H

11SDNG

7H

01SDNG

6H

9SDNG

01G

8SDNG

9G

7SDNG

8G

6SDNG

7G

5SDNG

01F

4SDNG

9F

3SDNG

8F

2SDNG

7F

1SDNG

31D

3CDA_XUA

4B

LTCO_DNG

4C

LTCO_DDV

31P

G

VDN

11L

VDDV

6F

BDNG

6A

BDDV

01M

DDNG

11N

DDDV

6P

4SSV

2R

3SSV

4K

2SSV

5G

1SSV

4J

2OI_DDV

5N

1OI_DDV

6N

3DDV

3M

2DDV

3J

1DDV

11F

RUCH_DNG

51K

2CSP_DNG

51B

1CSP_DNG

8E

QDNG

31B

76DDV

01C

5DDV

U

P

V

U

_

D

P

C

R

D

_

L

S

1

3

I O

K

T

2

4

R

P

J

N

C

J

1

9

1

3

1

0

1

S

I

M

S

R

C I M

S

L

K

T

D A T A

C 5 0 4

V C C D

V C C A

C 5 0 1

V C C D

C 5 0 2

V B

C 5 0 5

C 5 0 3

C 5 0 6

6

5

4

7

6

5

4

G

S I

M

G

8

5 0

9

G

0 1 0

G

2

1

3

2

1

3

A T

V C C

R

D 5 0 4

C U P

_ C S

5

1

4

C 5 1 2

C

5

1

5

C 5 1 3

C

5

1

6

C 5 1 7

V C C B

V C C A

V T C X O

V R F

V C C D V

C

5

C

1

_

1 1 . 8 A

N E G

2

R 5 0

P

1 O S

1

B A T 5 0 0

2-8

SAMSUNG Proprietary-Contents may change without notice

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C 5 1 0

C 5 0 9

C 5 0 8

C 5 0 7

V R T C

EAR_SEL

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

VCC_1.8A

VCCD

VRTC

VCC_1.8A

C410

A(22)

A(23)

D(0:15)

A(0:20)

A(21)

AT_nDTR

CP_CSROMEN CP_CSRAMEN

R410

VCCD

CP_WEN

R423

CP_OEN

UPPER_BYTE

R424

CP_INT

PH_WAKEUP CLK32K

VCCD

AT_TXD AT_RXD

PDA_ACTIVE

PH_OFF_RDY

R416

R415

AT_nRTS

AT_nCTS

PDA_WAKEUP

SDS_TXD

SDS_RXD

SIMDATA

SIMCLK

R401

TP400

R404

5

4

3

7

1

L

H

2

1

N

L

2

N

C

N

C

D

2

5

0

N

D

A

S

V

_

C

5

_

3

2

A6

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)

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)

B5 F8 F7 C5 D6 E7 D5 C4 B4 B3 C1 C2 D2 D3 E3

B13 F11 E14 D15 B15 C14 A16 A15 B17 C17 D16 F14 G14 G13 G17 J12 K12 K13 K14 L14 L15 L16

A12 A13 M15 M14 M11 N14

C13 P16 P15 T15

M9 T5 P2 N2

XCP_D0 XCP_D1 XCP_D2 XCP_D3 XCP_D4 XCP_D5 XCP_D6 XCP_D7 XCP_D8 XCP_D9 XCP_D10 XCP_D11 XCP_D12 XCP_D13 XCP_D14 XCP_D15

XCP_A0_BEON XCP_A1 XCP_A2 XCP_A3 XCP_A4 XCP_A5 XCP_A6 XCP_A7 XCP_A8 XCP_A9 XCP_A10 XCP_A11 XCP_A12 XCP_A13 XCP_A14 XCP_A15 XCP_A16 XCP_A17 XCP_A18 XCP_A19 XCP_A20 XCP_A21

XCP_CSROMEN XCP_CSRAMEN XPA0/CS1N XPA1/CS2N XPA2/CS3N XPA3/CS4N

XCP_WEN XPA4/OEN XPA5/WAITN XPA6/BE1N

XPA7/IRQ1 XPA8/IRQ2 XPA9/IRQ3 XPA10/IRQ4

A

2

3

P

A

X

_

P

6

X 3 A P X

2

4

3

0

1

N

I

S

/

4

3

2

0

1

B

K

_

P

C

X

4

1

2

4

5

T

L

R

M

1

0

1

7

1

6

7

9

8

1

6

7

1

J

H

M

K

J

L

K

S

V

2

3

4

1

0

T

X

U

T

R

O

A

S

0

/

D

7

8

6

5

9

M

R

I

B

_

/

K

0

2

1

K

_

3

1

_

P

A

C

P

C

P

C

X

3

4

3

1

5

3

F

T

P

E

N

K

U

TP401

VCC_1.8A

0

6

7

3

9

1

7 H

S S V

1

5

1

3

2

4

1

6

1

F

G

R

A

C

T

R

A

G

A

R

S

D

S

V

D

S

D

V

UCP400

I S O

1

0

M

A

1

0

1

0

X

M

I

R

T

/

_

6

5

1

3

A

P

X

3

4

L

H

_

M

T

K

X

P

O

A

L

R

I

T

C

D

C

/

_

9

4

9

8

3

0

1

2

1

A

M

P

S

X

2

3

1

6

5

2

0

1

L

F

G

U

N

C411

VCCD

6

5

4

6

5

6

7 1 G

D D V

O S

I M _ P C

/ 0 2 A P X

1 L

1

2

1

2

8

E

B

G

E

P

M

U

B

N

L

E

D

D V

K C S _

N

P

S S

C

/

2

1

2

A

P

X

5

4

6 J

R

K

L

D

P

D

V

_

S

D

S

D

V

K

A

L

K

C

Q

0

2

3

_

E

C

1

0

1

Q

M

R

A

M

R

M

_

W

T

D

S

O

P

B

_

/

1

T

3

8

7

6

5

3

4

M W P X

6 H

3

1

2

S

A

R

P

F

P

X

7

3

4

2

4

3

5

1

F

E

H

G

M

P

N

1

0

1

E

C

F

A

E

S

D

R

S

D

V

X

XCPTSTSTOP_CKO

B Q E R _

K

T

C

_ 4

T

3

_ P

A P

C

X

7

1

D

M

8 D

8 G

7 1 F

I

C

K

T

C R V

XRTCALARM_N

S

I

D

M

T

_

P

C

X

7 C

C406

2 1 C

B T S R

IOBIT#2 IOBIT#1

XTIC_MODE

XBSWN

N

XOSC32OUT

T

O

S

D

R

T

_

P

C

X

3

9

1

F

D

R417

C407

VREF

CLK13M_TR TR_RST

F12

TDO

F15

TRST

H12

TDI

G12

TMS

H13

TCK

G15

CKO

L12 K11 N4

INT#0

R12

IO7

U5

RWN

T17

DSP_AB(8)

AB#8

T14

DSP_AB(7)

AB#7

R14

DSP_AB(6)

AB#6

P12

DSP_AB(5)

AB#5

P11

DSP_AB(4)

AB#4

N11

DSP_AB(3)

AB#3

R13

DSP_AB(2)

AB#2

M10

DSP_AB(1)

AB#1

U13

DSP_AB(0)

AB#0

P10

DSP_DB(15)

DB#15

R11

DSP_DB(14)

DB#14

T11

DSP_DB(13)

DB#13

U11

DSP_DB(12)

DB#12

M8

DSP_DB(11)

DB#11

N8

DSP_DB(10)

DB#10

N7

DSP_DB(9)

DB#9

P7

DSP_DB(8)

DB#8

M6

DSP_DB(7)

DB#7

R7

DSP_DB(6)

DB#6

T7

DSP_DB(5)

DB#5

U7

DSP_DB(4)

DB#4

P6

DSP_DB(3)

DB#3

R6

DSP_DB(2)

DB#2

U6

DSP_DB(1)

DB#1

P5

DSP_DB(0)

DB#0

D12

M12

D11

XAG3

E11

XAG2

A11

XAG1

B11

XAG0

B7 A7

X1RTC

D10

X2RTC

E8 C6

CP_TDO ARM_TRSTN CP_TDI CP_TMS CP_TCK

SW_RST_INT

TP402

PH_PWR_OFF BT_REQ

AT_nDSR PH_ACTIVE

FLASH_RESET SIMRST SVC_LED_EN

UP_CS UP_SCLK UP_SDO UP_SDI

ARM_TRSTN

R425

R405

DSP_INT DSP_IO

OSC401

DSP_RWN

TR_RST

C423

R414

R408

VBAT

R413

C424

VCCB

U402

21

VO

VS

GND

3

DSP_AB(0:8)

DSP_DB(0:15)

R411

RTC_nALARMJACK_SENSE

C422

2-9

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SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

2-1-3. Sim Part

Phone can't access

SIM card

Check the pin 1 of

SIM500

Voltage = 3V

YES

Check the SIM

connector's

(SIM500)

YES

Check the circuit around SIM500

input circuitry

YES

Check the circuit around

U500 output

and voltage supply circuitry

YES

END

VCCD

VBAT

NO

Check the circuit related to

U500

resolder or change

SIM500

Check the related circuit of

SIM500

Check the related circuit of

U500

C502

C505

5

0

3

1

3

6

1

8

1

3

N

F

B

M

K

J

3

2

1

D

O

I

D

_

V

D D V

C

E

B

1

2

5

7

R

Q

6

C

D

U

D

S

C

N

P

H

G

_

D

N

G

D D V

VDD34

D V

VDD12

UP_CLK UP_RST

UP_IO

SIM_IO SIM_RST SIM_CLK

C11 J13

N9

SIMCLK

R10

SIMRST

P10 J11 K11 K14

K12 H11

C503

SIMDATA

C506

6 5 4

SIM500

6 5 4

7GG89GG10

11

33

22

C507

C510

C509

C508

2-10

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2-1-4. Camera Part

Camera does not work

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

Check Camera FPCB

YES

Check the Voltage

Pin 5, 6 of U603

(Pin5=1.5V,Pin6=2.8V)

YES

Check Pin 18 of CN801

(Frequency = 24Mhz)

YES

END

CAM_28D

NO

Change Camera Module

Change U603

Check R122

CAM_15DCAM_28D CAM_28D

CAM_HSYNC CAM_VSYNC

CAM_PCLK

VID(5) VID(6) VID(7) VID(4) VID(3) VID(2)

1.CLKSEL

3.STANDB

6.FLASH(OPEN)

C816

7 0 8 R

R810

100

8 0 8 R

33

77

11 11

15 15

19 19

23 23

11

55

99

1313

1717

2121

CN801

2

4

6

8

10

12

14

16

18

20

22

24

4

2

1

8

8 R

R

SCL SDA

CAM_MCLK CAM_RESET VID(0) VID(1)

C819

V_IN

U603

CAM_PWR

1

2

3

4 1 6

C

VOUT2

EN2

VIN5VOUT1

D

EN1

VSS

N G

7

2-11

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CAM_28DCAM_15D

6

4

5 1 6

C

3 1 6

C

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

2-12

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

2-1-5. Charging Part

Abnormal charging part

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

Check the pin 21,22 of

IFC300 is Vbat

YES

Check the pin 4, 19 of

IFC300

is GND

YES

END

NO

Ch e ck IFC300

2-13

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SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

VBAT

VDD_USB

USB_DP

USB_DM

PUEN

U304

DXIN

DXOUT

GND5VBUS

DYIN

DYOUT

6

OMAP_TRST

OMAP_TMS

OMAP_TDI

OMAP_TCK OMAP_TDO

DEBUG_TXD

DEBUG_RXD

BP_VF

OMAP_RTCK

SDS_TXD SDS_RXD

JIG_ON

MODE_SW

1

2

34

VDD_30D

R301

VCCD

R302

R351 R355

R353

R354 R352

R315 R317

R356

R319 R320

R321

R323

4

5

6

0 1 3 V

ZD301

2

3

1

8

7

C302

26

NC

25

NC

24

23

22

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

5 0 3 C

0 0 3 D Z

2 0 3 D Z

IFC300

2-14

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2-1-6 Audio-Microphone Part

Microphone does not work

SGH-D720 Flow Chart of Troubleshooting and Circuit Diagrams

Check the assembled status of microphone.

YES

Check the reference voltage on mic path

C231=1.9V

YES

Is microphone ok?

YES

END

MICOUTP

MICINP

MICOUTN

AUXOUTN

R226

R231

R253

R256

NO

R227

R230

R254

R255

MIC_BIAS

MIC1

MIC1NMICINN

MIC2AUXINP

MIC2NAUXINN

Reassemblage microphone

resolder or change

(R259,C223,R223,C231,R233)

Check U500

VDD_30CD

R221

R259

C223

R223

MIC1

MIC1NAUXOUTP

C226

C232

R233

C231

MIC+

MIC

1

2

0

2

V

2-15

SAMSUNG Proprietary-Contents may change without notice

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Samsung SGH-D720 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual