Samsung SGH-B5702 TSHOO

10. Flow Chart of Troubleshooting

10-1.

10-1-1.

Baseband

Power ON

Power On' does not work

'

Check the current consumption

Current consumption

>= 100

Check the Vbat Voltage

Voltage

Check the pin of U300

C329(VISA)=

Yes

mA

Yes

>=3.4V

Yes

2.5

V?

No

No

No

Download again

Charge the Battery

Check U300

C329

Yes

L1(VDD_GSM_CORE)

Check the clock signal at OSC of MAX8699

Freq

Check the initial operation

V?

=1.2

Yes

Check the clock

= 32.768k

Yes

END

Hz

Yes

No

No

Check U300

C343

Check the clock generation circuit

relatedtoOSC

(

300,

C331, C334

)

10-1

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

V_EXT_CHARGE

OSC300

C331

C334

+VDD_MAINKEY_3.3V

+AVDD_HFA_2.6V

+VDD_SUBKEY_LED_3.3V

+VDD_SLEEP_2.9V

+VDD_IO_HIGH_2.9V

+VDD_USB_3.3V

HFR_P
HFR_N

EAR1_M
EAR2_M

SPK_N
SPK_P

C300

C353

C310

C312

C314

C316

MES_BATT

C356

C322

C323

C324

C325

REF_ON_PMU

PWREN2

C342

C341

C340

R303

R304

C326

VBAT

C319

1

1

8

9

2

1

E

B

D

C

E

T

S

B

D

D

T

T

T

D

D

A

T

T

V

V

B

A

A

1

2

M2

B

B

D

D

IN1

C3

IN2

B4

IN3

B10

IN4

B8

IN5

K6

IN6

K12

IN7

L5

IN8

M10

IN9

J5

INA1

H6

INA2

J7

INB1

H8

INB2

K8

C1N

L9

C1P

H12

OUTN

L11

OUTP

F12

CHGIN

F10

CHGINB

H2

XIN

J1

XOUT

C9

PWREN1

E5

PWREN2

G9

TEST1

J9

TEST2

8

4

5

7
3
3
C

3

5

3

3

3

3

C

C

C

S
U
B
V
+

1

2

1

2

5

9

6

3

7

5

1

1

1

1

A

B

A

A

A

E

D

C

C

D

A

2

S

D

D

D

D

D

D

D

D

D

D

U

D

D

D

D

D

D

D

D

D

D

B

V

V

V

V

V

V

V

V

V

3

6

4

V

5

1

V

P

C

C

O

G3

I

F

F

L

D

D

D

L

D

H

REC1B

R

R

G7

REC2B

M4

HPL

L3

HPR

F2

MICBIAS

H10

RXINN

K10

RXINP

F4

SIMOFFB

C7

SIMVCC

B12

USBLDO

U300

1

D

D

D

N

N

N

G

G

G

A

P

1

6

2

1

K

M

G

D10

VL

C328

K4

VBIAS

G1

VISA

E3

VSAVE

H4

CLK32K

D4

IRQB

E7

SCL

D6

SDA

L1

LX

J3

FB

F8

REFBP

F6

ONKEYB

G5

RESETB

3

2

D

D
N

N

S

C

C

S

G

G

N

N

V

P

P

1

8

7

1

2

1

L

M

J

C333

C301

C303

C311

C313

C315

C317

R307

MIC_BIAS_2.15V

C321

HFR_N
HFR_P

+VBUS_DETECT

C327

C329

TP_PMU_INT_M

C332

PMU_INT_M

SCL

ONKEY_N

RSTON

32KHz_DIGIT

SDA

+VDD_SD_3.3V

+VDD_IO_LOW_1.8V

+VDD_PLL_1.2V

+AVDD_2.6V

+VCC_SYN_2.8V

+VDD_RX_TX_2.8V

AUX_ON
JACK_IN

R310

R311

R312

SIMOFFn

C355

R314

R315

+SIMVCC_M

C330

L301

C339

BAT300

EARSPK_L
EARSPK_R

+VDD_GSM_CORE_1.2V

C343

C354

C
3

3
9

L301

C343

C

C

3

3

2

2

5

4

C333

PMU + DCDC + CHARGER

R

R

3

3

1
5

1

4

C322

C323

OSC300

C334

C331

U
3

0
0

C326

R307

C321

C
3

0
3

R223

C
3

2
9

C
3

C

C

3

3

1

1

4

6

C

0

3

1

1
2

C338

C313

C315

C300

C311

C317

C355

C
3

C332

5
3

C327

C335

C
2

1
8

C
2

1
1

C

C

3

3
4
1

C342

4

0

C
2

1
2

C

R303

3
3
7

C319

10-2

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

10-1-2.

Initial

Initial Failure

Is the RST Pin#G5(RSTON)

U300"Low→High"

The Pin#E11,E9,D8(VBAT)

of

U300 >= 3.4V

There is

forms at the

32.768

of OSC300

C331

Yes

?

Yes

Yes

kHz wave

and

C334

No

No

No

if it has some problems,replace it

(

if it has some problems,replace it

(

Check the U300

Check the U300

Check the U300

.)

.)

of

-

Yes

The voltage is"High" at the

C303

C314,

Yes

LCD display is O.K

Yes

Sound is O.K

Yes

END

No

No

No

Check the

Check the LCD part

Check the AUDIO part

U300

10-3

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

V_EXT_CHARGE

OSC300

C331

C334

+VDD_MAINKEY_3.3V

+AVDD_HFA_2.6V

+VDD_SUBKEY_LED_3.3V

+VDD_SLEEP_2.9V

+VDD_IO_HIGH_2.9V

+VDD_USB_3.3V

HFR_P
HFR_N

EAR1_M
EAR2_M

SPK_N
SPK_P

C300

C353

C310

C312

C314

C316

MES_BATT

C356

C322

C323

C324

C325

REF_ON_PMU

PWREN2

C342

C341

C340

R303

R304

C326

VBAT

C319

1

8

1

2

2

9

1

E

B

D

C

D

E

T

S

B

D

D

D

T

T

T

D

D

D

T

A

T

V

V

V

A

B

A

1

2

3

M2

B

B

D

D

D

IN1

C3

IN2

B4

IN3

B10

IN4

B8

IN5

K6

IN6

K12

IN7

L5

IN8

M10

IN9

J5

INA1

H6

INA2

J7

INB1

H8

INB2

K8

C1N

L9

C1P

H12

OUTN

L11

OUTP

F12

CHGIN

F10

CHGINB

H2

XIN

J1

XOUT

C9

PWREN1

E5

PWREN2

G9

TEST1

J9

TEST2

D
N
G
A

6

4

8

7

5

3

3
3
C

3

5

3

3

3

C

C

C

M

S
U
B
V
+

1

2

1

5

1

6

7

5

3

9

1

1

1

E

B

A

A

A

A

C

A

C

D

2

S

D

D

D

D

D

D

D

D

D

U

D

D

D

D

D

D

D

D

D

B

V

V

V

V

V

V

V

V

4

5

1

V

6

V

P

C

C

O

G3

I

F

F

L

D

D

L

D

H

REC1B

R

R

G7

REC2B

M4

HPL

L3

HPR

F2

MICBIAS

H10

RXINN

K10

RXINP

F4

SIMOFFB

C7

SIMVCC

B12

USBLDO

U300

1
D

D

N

N

G
P

G

1

8

2

1

K

M

G

D10

VL

C328

K4

VBIAS

G1

VISA

E3

VSAVE

H4

CLK32K

D4

IRQB

E7

SCL

D6

SDA

L1

LX

J3

FB

C332

F8

REFBP

F6

ONKEYB

G5

RESETB

3

2

D

D

N

N

S

C

C

G

G

S

N

N

P

P

V

1

7

2

1

1

L

J

C333

C301

C303

C311

C313

C315

C317

R307

MIC_BIAS_2.15V

C321

HFR_N
HFR_P

+VBUS_DETECT

C327

C329

TP_PMU_INT_M

PMU_INT_M

SCL

ONKEY_N

RSTON

32KHz_DIGIT

SDA

+VDD_SD_3.3V

+VDD_IO_LOW_1.8V

+VDD_PLL_1.2V

+AVDD_2.6V

+VCC_SYN_2.8V

+VDD_RX_TX_2.8V

AUX_ON
JACK_IN

R310

R311

R312

SIMOFFn

C355

R314

R315

+SIMVCC_M

C330

L301

C339

BAT300

EARSPK_L
EARSPK_R

+VDD_GSM_CORE_1.2V

C343

C354

C
3

3
9

L301

C343

C

C

3

3

2

2

4

5

C333

C335

PMU + DCDC + CHARGER

R

R

3

3

1

1
5

4

C322

OSC300

C334

C331

U
3

C323

0
0

C326

C

C

2

2

1

1

1

8

C

C

3

3
4
1

C342

4

0

R307

C321

C
3

0
3

R223

C
3

2
9

C
3

C

C

3

3

1

1

4

6

C

0

3

1

1
2

C338

C313

C315

C300

C
2

1
2

C311

C317

C355

C
3

C332

5
3

C327

C

R303

3
3
7

C319

10-4

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

10-1-3.

MASTER

(1)

Sim Part

Insert SIM is displayed on the LCD

"

Yes

SIM200

#1 = H ?

Yes

After Power On,

Check SIMCLK Signal On

of SIM200 inafew

#3

second

Yes

After SIM Card insert,

SIM200

#2 = "

H"

No

No

No

Resolder or change UCP200

Check the clock

Replace PBA

SIMIO_M

SIM_IO_1

SIMIO_S

SIM_SEL

SIMCLK_M

SIM_CLK_1

SIMCLK_S

Yes

Check the SIM Card

END

+VDD_USB_3.3V

R200

C200

14

16

13

15

A

A

D

C

C

C

O

M

V

N

N

O
C

1

NCA

2

A-B_IN

3

NOB

4

COMB

B
C
N

5

6

12

COMD

11

NOD

10

C-D_IN

9

NCC

C

D

M

C

N

O

O

G

N

C

7

8

+SIMVCC_S

+SIM_VCC_1

+SIMVCC_M

SIMRST_S

SIM_RST_1

SIMRST_M

U200

C216

C
2

1
5

SIM200

SIM SELECT

SAMSUNG Proprietary-Contents may change without notice

[MASTER]

C214

10-5

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

V

SLAVE

(2)

Insert SIM is displayed on the LCD

"

Yes

SIM800

#1 = H ?

Yes

After Power On,

Check SIMCLK Signal On

of SIM800 inafew

#3

second

Yes

After SIM Card insert,

SIM800

#2 = "

H"

Yes

Check the SIM Card

No

No

No

Resolder or change UCP200

Check the clock

Replace PBA

SIMIO_S

SIM_IO_2

SIMIO_M

SIM_SEL

SIMCLK_S

SIM_CLK_2

SIMCLK_M

1

2

3

4

NCA

A-B_IN

NOB

COMB

14

15

16

A

A
O

M

N

O
C

B
C
N

5

7

6

D
N
G

SIM SELECT

END

+VDD_USB_3.3

R205

C217

C
C
V

13

D
C
N

12

COMD

11

NOD

10

C-D_IN

9

NCC

C

C

M

O

O

N

C

U201

8

+SIMVCC_M

+SIM_VCC_2

+SIMVCC_S

SIMRST_M

SIM_RST_2

SIMRST_S

SIM800

[SLAVE]

10-6

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Z
D
5
0
5

C
4
2
0

1
0

R

4

4

U

1
5

R
4
1

0

3

0
4

U

C
4
1

9

Flow Chart of Troubleshooting

10-1-4.

Microphone Part

Microphone does not work

Isthe Microphone

assembled correctly?

Check the reference voltage on mic path

Check the connection MIC

MIC_BIAS

Check mic-path connection

Yes

Yes

Yes

=2.15

Yes

V?

No

No

No

Reassemble the microphone

Resolder or replace

MIC400

Check

U300

Resolder C400,C405,C411

END

Yes

10-7

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

L

ZD400

L400

MIC400

L402

ZD401

C405

C411

C400

MIC_IN_P

MIC_IN_N

MIC_SEL_N_M

TA401

MIC_BIAS_2.15V

R400

R424

C403

C408

C402

MIC_P_MMIC_SEL_P_M

R402 C407

MIC_N_M

C413

MICROPHONE

MIC_BIAS_2.15V

R415

MIC_SEL_N MIC_SEL

EARMIC_N

EARMIC_P

MIC_SEL_P

C420

C400 C405 C411

L400 L402

ZD400ZD401

MIC400

0

8

9

1

1

2

2
L

S

D

2

E

1

VCC

2

1S1

S

7

2S2

U401

6

GND

1
L

2

1

E

S
1

D

S

4

3

5

MIC_IN_N

MIC_IN_P

R423

R424

C403

C408

TA401

R
4

0
0

R
4

0
2

C413

C209

C213

R212

R211

R423

MIC_BIAS_2.15V

R413

MIC_SEL_N MIC_PATH_SE

MIC_SEL_N_M

MIC_SEL_P_M

MIC_SEL_P

C419

TP_PMU_INT_M

C
4

0
2

C
4

0
7

0

0

U

C

P

2

1

2

VCC

1S1

R406

R404

C412

C406

R401

TA400

0
1

8

9

1

2

2
L

S

D

2

E
S

7

2S2

U400

6

GND

1
L

2

1

E

S

S

1

D

5

4

3

R

R

7

7

0

0

6

7

C
4

1
4

C

R

4

4

0

0

9

3

C
4

0
4

C
7

0
0

MIC_SEL_N_S

MIC_SEL_P_S

C

R
7

0
1

C

7

7

1

1

0

5

UCP700

R702

Master MIC path

Slave MIC path

10-8

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

10-1-5.

Receiver/Speaker Part

There is no sound from the Receiver/Speaker

Yes

Is the terminal of

Receiver/Speaker O.K

Is there any signals at the

Pin#1and Pin#2of

SPK_PAD

Is there any signals at the

Pin#1and Pin#2of

SPK_PAD

?

Yes

?

Yes

Yes

No

No

No

Replace the Speaker

Check SPK_PAD

Check HDC500

#55, #57

Is there any signals at the

H12,L11(SPK), M4,L3(RCV)

Is there any signals at the

J7,H8(SPK), J5,H6(RCV) of

of U300

Yes

U300

Yes

END

No

No

Check U300(Audio AMP)

Check UCP200(Master RCV)

UCP700(Slave RCV)

UCP(SPK)

10-9

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

KEY_COL(4)
KEY_COL(3)

SPK_P
SPK_N

HDC500

C513

49
51
53
55
57
59

49
51 52
53 54
55 56
57 58
59

V_EXT_CHARGE

OSC300

C331

C334

+VDD_MAINKEY_3.3V

+AVDD_HFA_2.6V

+VDD_SUBKEY_LED_3.3V

+VDD_SLEEP_2.9V

+VDD_IO_HIGH_2.9V

+VDD_USB_3.3V

HFR_P
HFR_N

EAR1_M
EAR2_M

SPK_N
SPK_P

C300

C353

C310

C312

C314

C316

MES_BATT

C356

C322

C323

C324

C325

REF_ON_PMU

PWREN2

C342

C341

C340

R303

R304

C326

VBAT

C319

1

1

8

1

2

9

2

1

1

E

B

D

C

D

E

C

T

B

S

D

D

D

T

T

T

D

D

D

T

T

A

V

V

V

A

A

B

1

2

IN1
IN2
IN3
IN4
IN5
IN6
IN7
IN8
IN9

INA1
INA2

INB1
INB2

C1N
C1P

OUTN
OUTP

CHGIN
CHGINB

XIN
XOUT

PWREN1
PWREN2

TEST1
TEST2

3

B

B

D

D

D

D
N
G
A

1

6

1

M

G

M2

C3
B4

B10

B8

K6

K12

L5

M10

J5
H6

J7
H8

K8
L9

H12
L11

F12
F10

H2

J1

C9
E5

G9

J9

8

4

5

7
3
3
C

3

5

3

3

3

3

C

C

C

S
U
B
V
+

2

1

5

3

5

7

9

6

1

1

1

A

A

A

A

B

E

C

A

D

2

S

D

D

D

D

D

D

D

D

D

U

D

D

D

D

D

D

D

D

D

B

V

V

V

V

V

V

V

V

5

1

6

4

V

V

P

C

C

O

G3

I

F

F

L

D

D

D

L

H

REC1B

R

R

G7

REC2B

M4

HPL

L3

HPR

F2

MICBIAS

H10

RXINN

K10

RXINP

F4

SIMOFFB

C7

SIMVCC

B12

USBLDO

U300

2

1

D

D

D

N

N

N

G

G

P

P

G

8

2
K

M

D10

VL

C328

K4

VBIAS

G1

VISA

E3

VSAVE

H4

CLK32K

D4

IRQB

E7

SCL

D6

SDA

L1

LX

J3

FB

C332

F8

REFBP

F6

ONKEYB

G5

RESETB

3
D
N

S

C

C

G

S

N

N

P

V

1

7

1

2

1

L

J

C333

C301

C303

C311

C313

C315

C317

R307

MIC_BIAS_2.15V

C321

HFR_N
HFR_P

+VBUS_DETECT

C327

C329

TP_PMU_INT_M

PMU_INT_M

SCL

SDA

ONKEY_N

RSTON

32KHz_DIGIT

+VDD_SD_3.3V

+VDD_IO_LOW_1.8V

+VDD_PLL_1.2V

+AVDD_2.6V

+VCC_SYN_2.8V

+VDD_RX_TX_2.8V

AUX_ON
JACK_IN

R310

R311

R312

SIMOFFn

C355

R314

R315

+SIMVCC_M

C330

L301

C339

BAT300

EARSPK_L
EARSPK_R

+VDD_GSM_CORE_1.2V

C343

PMU + DCDC + CHARGER

10-10

SAMSUNG Proprietary-Contents may change without notice

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