Samsung X670 Service Manual Trouble Shooting

7. Flow Chart of Troubleshooting

7-1. Power On

' Power On ' does not work

Yes

Check the Battery Voltage

is more than 3.4V

Yes

C408(VINT) = 2.7V?

Yes

Check the Clock at

R402=32KHZ

Yes

C425(+VDD_IO_LOW) &

C424(+VDD_IO_HIGH) = "H"?

Yes

No

Change the Battery

No

Check the PMU related to VINT

No

Resolder OSC400

No

Check the related circuit

C401(+VDD_GSM_CORE)

=1.8V?

Yes

Check for the clock at C312

= 26MHz

Yes

Check the initial operation

Yes

END

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

No

No

7-1

Check the +VDD_GSM_CORE circuit

Check the clock generation circuit

(related to U100)

FlowChartofTroubleshooting

FlowChartofTroubleshooting

ONKEYN

ONKEYN

C405

C405

OSC400

OSC400

C411

C411

Typical 3.7V

Typical 3.7V

+VDD_RX_TX

+VDD_RX_TX

+VCC_SYN

+VCC_SYN

+VDD_IMAGE

+VDD_IMAGE

+AVDD_HFA

+AVDD_HFA

+VDD_IO_HIGH

+VDD_IO_HIGH

+VDD_IO_LOW

+VDD_IO_LOW

R402

R402

C407

C407

VBAT

VBAT

+AVDD

+AVDD

V400

V400

R404

R404

C410

C410

C412

C412

C414

C414

C415

C415

C416

C416

C422

C422

C424

C424

C425

C425

C406

C406

C408

C408

BU_RST

R401

R401

POS

POS

BAT400

BAT400

NEG

NEG

29

30

27

31

26

25

26

25

I

I

O

O

C

C

C

C

S

S

S

S

O

O

O

O

24

24

RF2VDD

RF2VDD

23

23

RF12VBAT

RF12VBAT

22

22

RF1VDD

RF1VDD

21

21

D1VDD

D1VDD

20

20

LPD1VBAT

LPD1VBAT

19

19

LPVDD

LPVDD

18

18

HCVBAT

HCVBAT

17

17

HCVDD

HCVDD

16

16

D2VDD

D2VDD

15

15

IOD2VBAT

IOD2VBAT

14

14

IOVDD

IOVDD

13

13

_REC2

_REC2

S

S
A

A

I

I
B

B
C

C

I

I
M

M

12

12

C423

C423

32

28

27

28

Y

Y

C

C

E

E

F

F
E

E

K

K

R

R

N

N
O

O
_

_

C

C
H

H
T

T

Q

Q

S

S

R

R

I

R

I

R

_

_

_

_

10

11

10

11

34

33

36

29

T

T
N

N

I

I
V

V

C

C
H

H
O

O

I

I
M

M

I

I
S

S

9

9

35

30

31

32

34

33

36

35

X

X

T

T

V

V

T

T

E

E

D

D

G

G

A

A

A

A

R

R

A

A

V

V

D

D

H

H

B

A

A
S

S
V

V

U400

U400

C
H
K
C
M

I
S

8

8

B

M

M

D

D

B

B

V

V

C

C

V

V

V

V

C

C

C

1

1

H

H

H

S

S

N

N

K

E

E

R

R

C

R

R

M

M

I

I

M

I

W

W

S

S
_

S

P

_

P

7

6

7

6

SCP

SCP

T

T

V

V

P

P

G

G

P

P

A

A

C

C

H

H

C

C

B

B

C

C

/

/

SCN

SCN

R

R
U

U
C

C
G

G

D3VDD

D3VDD

H

H
C

C

SIMD3VBAT

SIMD3VBAT

SIMVCC

SIMVCC

SIMIOCD

SIMIOCD

SIMCKCD

SIMCKCD

_SIMRSCD

_SIMRSCD

SIMEN

SIMEN

GPO3

GPO3

GPO2

GPO2

GPO1

GPO1

GND

GND
GND

GND
GND

GND

2

2

K

K

GND

GND

N

N

1

1

2

2

E

E

3

3

C

C

NC

NC

R

R

L

A

L

A

K

K

E

E

L

L

C

D

W

C

D

W

R

R

NC

NC

_

S

S

P

C

_

S

S

P

C

1

2

3

5

4

1

2

3

5

4

BU_RST

C409

C409

+VDD_SLEEP

C413

37

37

38

38

39

39

40

40

41

41

42

42

43

43

44

44

45

45

46

46

47

47

48

48

49

49
50

50
51

51
52

52
53

53
54

54

C413

R405

R405

V401

V401

TP400

TP400

+VDD_SLEEP

+VDD_IO_LOW

+VDD_IO_LOW

SIM_VCC

SIM_VCC

SIM400

SIM400

SIM_IO

SIM_IO

1

1

SIM_CLK

SIM_CLK

SIM_RST

SIM_RST

C417

C417

C419

C419

C418

C420

C418
C421

C421

C420

6

6

2

2

5

5

3

3

4

4

G78G

G78G

G

G

G

G

910

910

AUX_ON

AUX_ON

SCL

SCL

SDA

SDA

32KHz_DIGIT

32KHz_DIGIT

PON_TX

PON_TX

REF_ON

REF_ON

SIMRST

SIMRST

SIMCLK

SIMCLK

MIC_BIAS

MIC_BIAS

R406

R406

RSTON

RSTON

IT_PMU

IT_PMU

SIMIO

SIMIO

26M_CLK

26M_CLK

C312

C312

+VDD_IO_HIGH

+VDD_IO_HIGH

R313

R313

R315

R315

+VDD_IO_HIGH

+VDD_IO_HIGH

U302

U302

1

5

1

5

NC

VCC

NC

VCC

2

2

INA

INA

4

4

3

3

OUTY

OUTY

GND

GND

R314

R314

26M_DIGIT

26M_DIGIT

7-2

7-2

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This Document can not be used without Samsung's authorization

7-2. Initial

7-2. Initial

Initial Failure

Initial Failure

Yes

Yes

Q300 pin 4 (RSTON) ="H"

Q300 pin 4 (RSTON) ="H"

Yes

Yes

Is UCP200 R214, R215

Is UCP200 R214, R215

OK?

OK?

No

No

No

No

FlowChartofTroubleshooting

FlowChartofTroubleshooting

Check the circuit related to reset

Check the circuit related to reset

Check the UCP200

Check the UCP200

Yes

Yes

Check the 16bit data signal

Check the 16bit data signal

&memoryCE

&memoryCE

Yes

Yes

END

END

7-3

7-3

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FlowChartofTroubleshooting

FlowChartofTroubleshooting

R13

R13

RFSIG0

RFSIG0

M12

M12

RFSIG1

RFSIG1

M11

M11

RFSIG2

RFSIG2

V5

V5

GPIOA3

GPIOA3

P9

P9

GPIOA4

GPIOA4

L11

L11

GPIOA5

GPIOA5

R11

R11

RFSIG6

RFSIG6

P11

P11

RFSIG7

RFSIG7

T2

T2

GPIOA21

GPIOA21

R2

R2

GPIOA22

GPIOA22

R5

R5

GPIOA23

GPIOA23

U18

U18

RFCLK1

RFCLK1

R17

R17

RFDO1

RFDO1

G1

G1

GPIOA9

GPIOA9

V18

V18

RFEN0

RFEN0

H1

H1

RESET

RESET

V10

V10

MCLK

MCLK

R9

R9

AUXDAC1

AUXDAC1

R8

R8

AUXDAC2

AUXDAC2

V11

V11

AUXDAC3

UCP200

UCP200

AUXDAC3

MICBIAS

MICBIAS

AUXADC1

AUXADC1
AUXADC2

AUXADC2
AUXADC3

AUXADC3
AUXADC4

AUXADC4
AUXADC5

AUXADC5

AUXMICN

AUXMICN
AUXMICP

AUXMICP

GPIOA24

GPIOA24
GPIOA25

GPIOA25
GPIOA26

GPIOA26

GPIOA30

GPIOA30
GPIOA27

GPIOA27
GPIOA28

GPIOA28

SIMCLK

SIMCLK

SIMIO

SIMIO

SIMPWR

SIMPWR

SIMRST

SIMRST

GPIOA17

GPIOA17
GPIOA29

GPIOA29
GPIOA31

GPIOA31

USBCN

USBCN

USBDM

USBDM

USBDP

USBDP

VREF

VREF

HFR1

HFR1
HFR2

HFR2
EAR1

EAR1
EAR2

EAR2

MICN

MICN
MICP

MICP

ANL

ANL
ANR

ANR

FSC

FSC
DCL

DCL

SCL
SDA

SDA

SCL

C217

C217

U14

U14

V12

V12

V8

V8

QN

QN

V7

V7

QP

QP

U8

U8

IN

IN

U7

U7

IP

IP

J1

J1

K1

K1
K2

K2
L1

L1
L2

L2

J17

J17
H18

H18
K15

K15
J15

J15

M18

M18
N18

N18
L17

L17
M17

M17
K18

K18
L18

L18

D13

D13
E11

E11
B13

B13

DD

DD

B14

B14

DU

DU

N1

N1
T1

T1
L9

L9

U17

U17
M14

M14

P8

P8
P6

P6
R6

R6

G17

G17
D15

D15
N14

N14
F17

F17

V2

V2
V3

V3
V4

V4

F14

F14
G14

G14
H11

H11

R207

R207
R208

R208

MODE_SELECT

MODE_SELECT
PON_SW

PON_SW
PON_PA

PON_PA

BT_INT

BT_INT
PON_TX

PON_TX
PON_3587_SYNTH

PON_3587_SYNTH
EXT2

EXT2
DCS

DCS

RF_CLK

RF_CLK
RF_DATA

RF_DATA

RF_EN

RF_EN

RSTEXTn

RSTEXTn

EDGE1_PA

EDGE1_PA
AFC

AFC
RAMP

RAMP

MIC_BIAS_BB

MIC_BIAS_BB

RX_TX_QN

RX_TX_QN
RX_TX_QP

RX_TX_QP
RX_TX_IN

RX_TX_IN
RX_TX_IP

RX_TX_IP

MES_BATT

MES_BATT
VF

VF
TEMP_PRODUCT

TEMP_PRODUCT
EAR_ADC

EAR_ADC

HFR_P

HFR_P
HFR_N

HFR_N
EAR1

EAR1
EAR2

EAR2

MIC_N

MIC_N
MIC_P

MIC_P

C222

C222

C223

C223

FSC

FSC

+VDD_IO_LOW

+VDD_IO_LOW

DCL

DCL

R213

R213

DD

DD

DU

DU
R_CONTROL

R_CONTROL
MELODY_SEL

MELODY_SEL
JACK_EN

JACK_EN

AUX_ON

AUX_ON
END_OF_CHG

END_OF_CHG
AUDIO_SW

AUDIO_SW

SIMCLK

SIMCLK

SIMIO

SIMIO

SIMRST

SIMRST
EXT1

EXT1

CHG_ON

CHG_ON

USBCN

USBCN
USBDM

USBDM
USBDP

USBDP

R205

R205

USB Interface

USB Interface

CLKBURST

CLKBURST

ANL

ANL
ANR

ANR

DAI & Bluetooth data Interface

DAI & Bluetooth data Interface

R203

R203
100K

100K

IT_PMU

IT_PMU
M_INT

M_INT

KEY_LED_ON

KEY_LED_ON

D_REF_CLK

D_REF_CLK

+VDD_IO_HIGH

+VDD_IO_HIGH

R215

R215

R214

R214

SCL

SCL

SDA

SDA

+VDD_IO_LOW

+VDD_IO_LOW

+VDD_IO_LOW

+VDD_IO_HIGH

+VDD_IO_HIGH

R309

R309

LCD_RESET

LCD_RESET

S_RST

S_RST

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SAMSUNG Proprietary-Contents may change without notice

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This Document can not be used without Samsung's authorization

+VDD_IO_LOW

Q300

Q300

7-4

7-4

4

4

5

5

6

6

3

3

2

2

1

1

LEVEL SHIFT

LEVEL SHIFT

+VDD_IMAGE

+VDD_IMAGE

R307

R307

RSTON

RSTON

S_RST_IMAGE

S_RST_IMAGE

FlowChartofTroubleshooting

FlowChartofTroubleshooting

7-5

7-5

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SAMSUNG Proprietary-Contents may change without notice

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This Document can not be used without Samsung's authorization

FlowChartofTroubleshooting

FlowChartofTroubleshooting

7-3. Charging Part

7-3. Charging Part

Abnormal charging part

Abnormal charging part

Check the U502 pin 1

Check the U502 pin 1

U502 pin 5 = "L"?

U502 pin 5 = "L"?

>4.9V

>4.9V

Yes

Yes

Yes

Yes

No

No

No

No

Check the circuit related to

Check the circuit related to

V_EXT_CHARGE

V_EXT_CHARGE

Resolder or replace U502

Resolder or replace U502

Yes

Yes

U502 pin 3 = "L"?

U502 pin 3 = "L"?

Yes

Yes

Check the U502 pin 10

Check the U502 pin 10

≒4.2V

≒4.2V

Yes

Yes

END

END

No

No

No

No

Check the circuit related to

Check the circuit related to

AUX_ON signal

AUX_ON signal

Resolder or replace U502

Resolder or replace U502

7-6

7-6

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SAMSUNG Proprietary-Contents may change without notice

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This Document can not be used without Samsung's authorization

V_EXT_CHARGE

V_EXT_CHARGE

5.0V

5.0V

+VBUS

+VBUS

AUX_ON

AUX_ON

CHG_ON

CHG_ON

C504

C504

C503 ZD501

C503 ZD501

+VDD_IO_HIGH

+VDD_IO_HIGH

R511

R511

C506

C506

FlowChartofTroubleshooting

FlowChartofTroubleshooting

Typical 3.7V

Typical 3.7V

VBAT

VBAT

R510

R510

ZD500

U502

U502

1

1

CRDL

CRDL

2

2

USB

USB

3

3

_PPR

_PPR

4

4

_CHG

_CHG

5

5

_EN

_EN

10

10

BAT

BAT

9

9

ICDL

ICDL

8

8

GND

GND

7

7

USBON

USBON

6

6

IMIN

IMIN

GND

GND

11

11

R515

R515

ZD500

R512

R512

R514

R514

BATTERY CHARGING

BATTERY CHARGING

C505

C505

Typical 1.4V

Typical 1.4V

MES_BATT

MES_BATT

USB_CHG_ONEND_OF_CHG

USB_CHG_ONEND_OF_CHG

7-7

7-7

SAMSUNG Proprietary-Contents may change without notice

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

This Document can not be used without Samsung's authorization

FlowChartofTroubleshooting

FlowChartofTroubleshooting

7-4. Sim Part

7-4. Sim Part

Phone can't access SIM Card

Phone can't access SIM Card

SIM400 pin 1,5 = "H"?

SIM400 pin 1,5 = "H"?

After Power ON,

After Power ON,

Check SIMCLK Signal on

Check SIMCLK Signal on

pin3 of SIM400 in a few

pin3 of SIM400 in a few

Yes

Yes

Yes

Yes

No

No

No

No

Check the sim charge pump

Check the sim charge pump

Check the Clock

Check the Clock

Yes

Yes

After SIM card insert,

After SIM card insert,

SIM400 pin 2 = "H(SIM_RST)"?

SIM400 pin 2 = "H(SIM_RST)"?

Yes

Yes

Check the SIM Card

Check the SIM Card

Yes

Yes

END

END

No

No

Replace PBA

Replace PBA

7-8

7-8

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SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

This Document can not be used without Samsung's authorization

FlowChartofTroubleshooting

FlowChartofTroubleshooting

C406

C406

C408

C408

BU_RST

R401

R401

POS

POS

BAT400

BAT400

NEG

NEG

29

30

31

28

28

C

C

F

F

E

E

R

R

32

34

33

36

29

30

31

T

T

T

T

E

E

A

A

N

N

V

V
I

I

B

B

A

A

V

V

V

V

S

S

V

V

U400

U400

C

C
H

H
K

K
C

C
M

M
I

I
S

S

7

8

7

8

35

32

34

33

36

35

T

T

X

X

V

V

D

D

G

G
H

H
C

C
V

V

C

C
H

H
S

S
R

R
M

M
I

I
S

S
_

_

6

6

A

A

A

A

R

R

D

D

D

D

V

V

M

M

P

P

T

T

G

G

C

C

A

A

H

H

B

B

C

C

/

/
R

R
U

U
C

C
G

G
H

H
C

C

1

1

2

2

K

K

N

N

N

N

2

2
E

E

E

E

3

3
R

R

R

R

K

K

L

L

W

W

W

W

P

P

C

P

P

C

3

5

4

3

5

4

37

37

B

B

SCP

SCP

V

V
P

P
C

C

38

38

SCN

SCN

39

39

D3VDD

D3VDD

40

40

SIMD3VBAT

SIMD3VBAT

41

41

SIMVCC

SIMVCC

42

42

SIMIOCD

SIMIOCD

43

43

SIMCKCD

SIMCKCD

44

44

_SIMRSCD

_SIMRSCD

45

45

SIMEN

SIMEN

46

46

GPO3

GPO3

47

47

GPO2

GPO2

48

48

GPO1

GPO1

49

49

GND

GND

50

50

GND

GND

51

51

GND

GND

52

52

GND

GND

1

1

53

53

C

C

NC

NC

L

A

L

A

E

E

54

54

C

D

C

D

R

R

NC

NC

_

S

S

_

S

S

1

2

1

2

BU_RST

C409

C409

+VDD_SLEEP

+VDD_SLEEP

C413

C413

R405

TP400

TP400

R405

V401

V401

C421

C421

+VDD_IO_LOW

+VDD_IO_LOW

C418 C420

C418 C420

C419

C419

SIM_VCC

SIM_VCC

SIM_IO

SIM_IO

SIM_CLK

SIM_CLK

SIM_RST

SIM_RST

C417

C417

SIM400

SIM400

1

1

6

6

2

2

5

5

3

3

4

4

G

G

G78G

G

G

G78G

910

910

AUX_ON

AUX_ON

SCL

SCL

SDA

SDA

32KHz_DIGIT

32KHz_DIGIT

PON_TX

PON_TX

REF_ON

REF_ON

SIMRST

SIMRST

SIMCLK

SIMCLK

7-9

7-9

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SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

This Document can not be used without Samsung's authorization

FlowChartofTroubleshooting

FlowChartofTroubleshooting

7-5. Microphone Part

7-5. Microphone Part

Microphone does not work

Microphone does not work

Check the connection

Check the connection

from MIC

from MIC

Check the circuit

Check the circuit

from UCP200 to MIC

from UCP200 to MIC

Yes

Yes

Yes

Yes

No

No

No

No

Resolder MIC

Resolder MIC

Resolder the C603, C606, R601, R603, R604

Resolder the C603, C606, R601, R603, R604

L600, L601, U600

L600, L601, U600

Yes

Yes

Check R605, R625

Check R605, R625

='H'?

='H'?

Yes

Yes

Check the MIC

Check the MIC

Yes

Yes

END

END

No

No

No

No

Check the JACK_IN, JACK_EN signal

Check the JACK_IN, JACK_EN signal

Replace the MIC

Replace the MIC

7-10

7-10

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SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

This Document can not be used without Samsung's authorization

MICROPHONE

MICROPHONE

EARPIECE

EARPIECE

EAR600

EAR600

11

11

22

22

33

33

44

44

55

55

66

66

15

15

77

77

G

G

16

16

88

88

G

G

17

17

99

99
G

G

18 10

18 10

10

10

G

G

G

G

G

G

1112GG1314

1112GG1314

L603

L603

6

6

MIC600

MIC600

D602

D602

FlowChartofTroubleshooting

FlowChartofTroubleshooting

MIC_BIAS_BB

MIC_BIAS_BB

MIC_BIAS

MIC_BIAS
Close to MCP

Close to MCP

MIC_BIAS

C615

C615

C611

C611

MIC_BIAS

0

0
1

1

NO2

NO2

9

9

COM2

COM2

8

8

IN2

IN2

1

1

2

2

C

C
C

C
V

V

D

D
N

N

C

C
N

N

G

G

6

6

7

7

C612

C612

Close to microphone

Close to microphone

U600

U600

1

1
O

O
N

N

3

3

COM1

COM1

4

4

IN1

IN1

5

5

NC1

NC1

C617

C617

C607

C607

C605

C605

C601

C601

D603

D603

R_ANT

R_ANT

L606

L606
L607

L607
L608

L608

45

45

D600

D600

JACK_EN

JACK_EN

R605

R605

R606

R606

C600

C600

L600

L600

L601

L601

EARSPK_L

EARSPK_L
HFR_N

HFR_N
EARSPK_R

EARSPK_R

R625

R625

R601

R601

R603

R603

R604

R604

D601

D601

R600

R600

C603

C603

C606

C606

R607

R607

+VDD_IO_HIGH

+VDD_IO_HIGH

R611

R611

R612

R612

C616

C616

R602

R602

EAR_SWITCH

EAR_SWITCH

JACK_IN

JACK_IN
EAR_ADC

EAR_ADC

C608

C608

C602

C602

C604

C604

MIC_P

MIC_P

MIC_N

MIC_N

123

123

ZD601

ZD601

Typical 3.7V

Typical 3.7V
VBAT

VBAT

P

P

P

P

_

_

_

_

P

P
K

K

R

R

M

M

F

F

P

P
S

S

A

A

A

A

7-11

7-11

SAMSUNG Proprietary-Contents may change without notice

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

This Document can not be used without Samsung's authorization