04 Troubleshooting

SAMSUNG Proprietary-Contents may change without notice

7. Flow Chart of Troubleshooting

This Document can not be used without Samsung's authorization

7-1

7-1. Power On

Current consumption>=100mA

The set is not ' Power On '

Voltage >= 3.3V

Download again

Charge the Battery

pin#J12 of U300 >= 2.8VCheck U300 and C314

pin#A13 of U300 = 2.8V

Check U300 and C315

Check the clock signalat pin#3 of U102Freq = 26MHz ,Vrms ≥ 300mV

Check the clock generation circuit(related to U102)

END

No

Yes

Yes

Yes

Yes

Yes

No

No

No

No

pin#G11 = 1.8VNo

Yes

Check the +VBATT Voltage

Check the pin of U300

Check the initial operation

Check the current consumption

SAMSUNG Proprietary-Contents may change without noticeThis Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-2




7-3

7-2. Initial

The pin#G11 of U300 = 1.8Vand

the pin#J12 of U300 ≒ 2.825V?

Initialization Failure

Check the U300(If it has some problem, adjust it.)

END

No

Yes

Is the pin#K9 of U300"Low -> High"?

Yes

Check the U20032.768kHz wave forms at

the C216 and C217

Check the LCD Part

Yes

No

Yes

Yes

The Voltage is "High" atthe C313

Check the Audio Part

No

Check the U300(If it has some problem, adjust it.)

Check the U300

LCD display is O.K

No

No

Yes

Yes

Sound is O.K

No



7-4




7-5

7-3. SIM Part

Are there any Signals atpin#N9, #R10, #P10 of U300?

"Insert SIM" is displayed on the LCD

Check the U200

Check the SIM Card

END

No

Yes

Yes

Yes

No

Check the U300Are there any Signals at

pin#K12, #K11, #K14, #J11 ofCN100?



7-6

7-4. Charging Part

The pin#17, #18 ofCN701 is TA_VEXT ≒

5V ?

Abnormal charging operation

Replace TA or Check CN701

No

END

Yes

The pin#8 of U301 is 3.2~4.2V ?Check the U301

No

Yes

No

Solder again or change R310

Yes

The ICHRG = 1.4V(during

charging) and ≒ 180mV(full

charging) ?




7-7



7-8

VC

CA

C303

C311

R14 VREGP M13

VR

TC H

11 V

SIM

K12

G5 VSS1

K4 VSS2 VSS3 R2 VSS4 P6

VXVCM R13

XOENAQ D1

VL5S

_A D

10 C

9 V

L5S_B

VLD

O_1 G

11 V

LDO

_2 J12 A

13 V

LDO

_3 V

LDO

_4 B12

VLD

O_5 B

10

VLD

O_6 A

14 V

LDO

_7 C12

VR

EF A

10

VREGN

VDDB A6

VDDD N11

VDDV L11

VDD_IO1 N5 J4 VDD_IO2

C4 VDD_OCTL

VE

XT E

14

VIB

_DR

V F

15

VIB_RNG_EN L9

VL4S

_A A

12 V

L4S_B

B11

P10

UP

_RS

T R10

VA

CC

F14

VB

AT E

13

VDD1 J3

VD

D12 J13

VDD2 M3 VDD3 N6

VD

D34 C

11

VDD5 C10 VDD67 B13

SD

O_P

SC

N7

SE

RC

K

C2

SE

RD

A

C1

B1

SE

RLE

1 S

ER

LE2

A2

SIM

_CLK

K14

SIM

_IO J11

SIM

_RS

T K11

TXP E7

UP

_CLK

N9

UP

_IO

RESET_O K9

RIN

G_D

RV

F13

RTC

_ALM

N H

10

RTC_CLK N4

RW

N

L2

RXTXIN D6 RXTXIP D7

RXTXQN C6 RXTXQP C7

SC

LK_P

SC

L8

M7

SD

I_PS

C

A4

G6

OC

TL5 O

CTL6

B3

A3

OC

TL7

PSW1_BUF L7

PWR_KEEP M9

PWR_SW1N C15 PWR_SW2 C14

RAREF1 B6 RAREF2 B5

R3

RE

SE

TN_C

SP

N14

MICOUTN P15 MICOUTP N15

MODE N10

1 NC5 NC6 2

NC7 P5

OC

TL0 E

6 C

5 O

CTL1

OC

TL2 F5 E

5 O

CTL3

OC

TL4

GND_HCUR F11

GND_OCTL B4

GND_PSC1 B15 GND_PSC2 K15

INTRQ L10

L3 I|O

LE

D1_D

RV

G13

LE

D2_D

RV

G12

R6 MC

MICINN M14 MICINP

J10 GNDS17 K10

GNDS2 F8 GNDS3 F9 GNDS4 F10 GNDS5 G7 GNDS6 G8 GNDS7 G9

G10 GNDS8 GNDS9 H6

GNDV P13

P3

F6 GNDB

GNDD M10

GNDQ E8

F7 GNDS1

GNDS10 H7 GNDS11 H8

H9 GNDS12

J7 GNDS13 GNDS14 J8 GNDS15 J9 GNDS16

DB

14 D

3 D

B15

D2

DB

2 K

3 J5

DB

3 D

B4

J6 D

B5

H5

G3

DB

6 D

B7

G4

DB

8 F4

DB

9 F1

DINTR

K8

DAICK R4

L6 DAIDI DAIDO M6

DAIRN P4

DB

0 K

1 D

B1

K2

DB

10 F2

DB

11 F3

DB

12 E

2 D

B13

E3

AOUTBN

R12 AOUTBP

L14 AUXINN AUXINP M15

L13 AUXOUTN AUXOUTP K13

D13 AUX_ADC3

CH

_BD

RV

E11

CH

_ISE

N F

12

CH

_RE

S D

14

E9

CR

EF

CS

N_P

SC

AB

4 N

2 A

B5

M2

M1

AB

6 A

B7

K7

AB

8 K

5

AD

C_A

UX

1 E10

AD

C_A

UX

2 D15

AFC D9

AOUTAN N12 AOUTAP P11

P12

U300

AB

0 K

6 P

1 A

B1

AB

2 L5 N

1 A

B3

VR

TC

TP305

TP310

VC

C_1.8A

C316

C313

1uF C

310

10V

VC

CD

C307

R300

TP307

C317

VR

F

9 G

G

10

11 2

2 33 4

4

5 5

6 6 7 G

G

8

CN

300

R302

C308

C304

U303

NE

G

PO

S

C327

VC

CB

C305

VR

TC

VR

F

C314

Q300

1 3 2

VC

CD

C315

C312

R303 R

304

TP306

VC

CD

V

CC

A

R309

R312

R310

C324

C325

C326

C301

R311

TP308

TP301

C309

VB

AT

C300

VB

AT

R308

6 _A

CO

K 8

_CH

G 5

_EN

R301

9

GG

10 11

GG

12

GN

D

3 2 IN

4 ISE

T

VL

1

U301 B

ATT 7

C318

C306

VC

CD

C302

C322

TP309

AUXOUTP AUXINN

AUXOUTN

EA

R_A

DC

V

BA

T

AOUTBP

TA_V

EX

T

ICH

RG

C

HG

_ON

CH

G_D

ET

INTR

Q

KE

Y_C

OL(2)

KE

Y_R

OW

(0)

PW

R_K

EE

P

XO

EN

A

PC

S_R

X_E

N

FLAS

H_R

ES

ET

DS

P_IO

D

SP

_RW

N

AUXINP

AOUTAN

AOUTBN

AOUTAP

RF_E

N

MICINN

MICOUTN

RT

CA

LA

RM

RTX

_IP

RTX

_QN

R

TX_Q

P

RTX

_IN

RST

KE

Y_B

L1

SIM

RS

T S

IMD

ATA

SIM

CLK

UP

_SD

O

VR

EF

DS

P_A

B(0)

UP

_SD

I

UP

_SC

LK

MICOUTP

MICINP

UP

_CS

AFC

TX

PO

WE

R

CLK13M_MC

CLK32K

DSP_INT

PWR_ON JIG_ON

DS

P_D

B(15)

DS

P_D

B(14)

DS

P_D

B(13)

DS

P_D

B(12)

DS

P_D

B(11)

DS

P_D

B(10)

DS

P_D

B(1)

DS

P_D

B(0)

DS

P_A

B(8)

DS

P_A

B(7)

DS

P_A

B(6)

DS

P_A

B(5)

DS

P_A

B(4)

DS

P_A

B(3)

DS

P_A

B(2)

DS

P_A

B(1)

DS

P_D

B(0:15)

DS

P_A

B(0:8)

DC

S_TX

_EN

G

SM

_TX_E

N

SE

RLE

S

ER

DA

T S

ER

CLK

TX_E

N

TX_B

AN

D_S

EL

DS

P_D

B(9)

DS

P_D

B(8)

DS

P_D

B(7)

DS

P_D

B(6)

DS

P_D

B(5)

DS

P_D

B(4)

DS

P_D

B(3)

DS

P_D

B(2)




7-9

7-5. Microphone Part

Is the assembled status ofmicrophone O.K?

Microphone does not work

C410 > 2.5V

Reassemble the microphone

Solder the microphone again or

Replace around Mic Circuit

(C403, C407, R407, R410.....)

END

No

Yes

Yes

Yes

Yes

No

Is microphone ok ?

No

Check U300

Check the reference voltage on Mic path



7-10




7-11

7-6. Speaker Part

Is the terminal of SpeakerO.K.?

There is no sound from Speaker

No

Replace the Speaker

The pin#4of U402 is

Check U402

The pin#4of U402 isCheck U402

Are there anysignals

at the pin#5 and

END

Yes

YesNo

The type of soundfrom the Speaker is

Melody

YesNo No

No

Yes

YesYes

Are there anysignals

at the pin#2 and

No

Check U300



7-12

EA

RP

IEC

E

R41

0

C42

0

VC

CD

R41

4

R40

8 0

L402

R41

3

R40

7

C40

6

V40

5

R42

3

V40

4

R41

6

V40

3

R42

0

VC

CD

C40

9

R42

2

R41

1 2.

7K

C41

3

L401

C41

5

C40

0

R41

8

C41

8

R42

1

VC

CD

C40

4 C

403

R40

2

R41

9

1 V

+

R40

6

G 14

GN

D

6

4 IN

1

8 IN

2

NC

1 5

NC

2 7

2 N

O1

10 N

O2

U40

2

CO

M1

3

CO

M2

9

11

G

G 12

13

G

C41

1

2

1 3

5

4

VC

CD

U40

1

R40

5

C40

7

C42

1

R40

0

R41

5

C42

2

C41

0

C40

8

8 8 99

11

GG

12 1

3 GG

14

11 10

10

2 2 33

4 4 55

6 6 77

CN

400

C41

4

R42

5

VB

AT

R40

4

MIC

1

C40

1

V40

1

V40

2

C40

5

C41

9

R42

4

R40

3 V

CC

A R40

9

C41

2

R40

1

R41

2

C41

6

R41

7

L403

C40

2

C41

7

AO

UTB

P

RA

DIO

_SH

UTD

OW

N

SP

K_T

N

SP

K_T

P

EA

RS

PK

_R

EA

RS

PK

_L

SP

K_T

N

EA

R_S

WIT

CH

JAC

K_I

N

EA

R_A

DC

AO

UTB

N

AU

XO

UTP

AU

XIN

P

AU

XO

UTN

AU

XIN

N

R_A

NT

SP

K_T

P

MIC

OU

TN

MIC

INN

MIC

MIC

OU

TP

MIC

INP

MIC

+




7-13

7-8. EGSM Reciever

F100 CHECKpin#9 ≥ -65dBm ?

CONTINUOUS RX ONRF INPUT : 62CHAMP : -50dBm

NORMAL CONDITIONcatch the channel?

U100 CHECKpin#31 : 26MHz ?Vp-p : 860mV?


U100 CHECKpin#21,22 ≥ -65dBm ?

Check soldered status ofC108, L111, L102

CN100resolder or change

F100, C127, L108resolder or change

C131,C132,L109resolder or change

U102 CHECKclean 3V?

CHECKU300

YES

NO

NO

NO

NO

NO NO

YES

YES

YES

YES

U102 CHECK26MHz ?

Vp-p : 950mV?

U102Resolder or

Change?

YES



7-14

7-9. EGSM transmitter

CONTINUS TX ON CONDITIONTX POWER DAC:500 CODE APPLIED

CH:62RBW : 100KHzVBW : 100KHzSPAN : 10MHz

REF LEV. : 10dBmATT. : 20dB

F100 pin#7 :about 2~3

dBm?

CN100, C105check&change

F100pin#4 : 3 V?

U300check & change

C106≒ 4~5dBm?

U101check & change

C109 : 3.7 V?

NO NO

YES

YES

YES

NO

NO

BATTERY, U100check & change

BetweenR101 &

U101 : 1.2V?

YES

NO

R101check &change

R102 :≒ -5dBm ?

YES

YES

U101change

U300check &

YES

NO

U100change orresolder

NO




7-15

7-10. DCS Receiver

CONTINUOUS RX ONRF INPUT : 698CH

AMP : -50dBm









C129, C128, L107resolder or change

U102 CHECKclean 3V?

CHECKU300

YES

NO

NO

NO

NO

NO NO

YES

YES

YES

YES

YES

U102 CHECK26MHz ?

Vp-p : 950mV?

U102Resolder or

Change?



7-16

7-11. DCS transmitter

CONTINUOUS TX ON CONDITIONCH : 698CH(DCS),660CH(PCS)

TX POWER CODE: 350 CODE APPLIED

RBW : 100KHz

VBW : 100KHz

SPAN : 10MHz

REF LEV. : 10dBm

ATT. : 20dB



dBm?


F100pin#10 : 3 V?

U300check & change

L101:≒ 4~5dBm?

U101check & change

C109 : 3.7 V?

NO NO

YES

YES

YES

NO

NO


BetweenR101 & U101

: 1.2V?

YES

NOR101

check &change

NO

R100:≒ -5dBm ?

YES

YES

YES

U300check

NO





7-17

7-12. PCS Receiver

CONTINUOUS RX ONRF INPUT : 698CH

AMP : -50dBm









C126, C124, L105resolder or change

U102 CHECKclean 3V?

CHECKU300

YES

NO

NO

NO

NO

NO NO

YES

YES

YES

YES

YES

U102 CHECK26MHz ?

Vp-p : 950mV?

U102Resolder or

Change?



7-18

7-13. PCS transmitter

CONTINUOUS TX ON CONDITIONCH : 698CH(DCS),660CH(PCS)

TX POWER CODE: 350 CODE APPLIED

RBW : 100KHz

VBW : 100KHz

SPAN : 10MHz

REF LEV. : 10dBm

ATT. : 20dB



dBm?


F100pin#10 : 3 V?

U300check & change

L101:≒ 4~5dBm?

U101check & change

C109 : 3.7 V?

NO NO

YES

YES

YES

NO

NO


BetweenR101 & U101

: 1.2V?

YES

NOR101

check &change

NO

R100:≒ -5dBm ?

YES

YES

YES

U300check

NO





7-19



7-20

C106

C108

R102

C105

C137

C103

AN

T101 A

NT100

L101

R101

C117

TP103

C110

13

G

G 14

PC

S_R

X

3 10

VC

1

VC

2 4 2

VC

3

9

1 D

CS

_RX

DC

S|P

CS

TX

5

11 E

GS

M_R

X

EG

SM

_TX

7

G 86 G

12

G

F100

AN

T

L112

8 V

CC

2

VC

C2

18

VC

C_O

UT 13

VR

AM

P

6

12

11 G

G

9

G

19

G

17

7 GS

M_IN

G

SM

_OU

T 10

3 TX_E

N

VB

ATT

4 U101

2 BS

5 CE

XT

DC

S/P

CS

_IN

1 D

CS

/PC

S_O

UT

16

G 15

G 14

G

C109

C113

C111

C116

C104

C114

C107

C115

5 G

G

6

CN

100

2 A

C

3 G

1 G

4

VB

AT

R100

0

L102

L103

3.9nH

C112

EG

SM

RX

PC

S_R

X_E

N

DC

S_TX

_EN

GS

M_TX

_EN

P

CS

RX

DC

SR

X

TXP

OW

ER

GS

M_P

AM

_IN

DC

S_P

AM

_IN

TX_E

N

TX_B

AN

D_S

EL




7-21

(MU

RA

TA

)

(MU

RA

TA

)

GS

M

(MU

RA

TA

)

DC

S

C126

2

G

G

5

IN

1 3

OU

T

OU

T

4

R103

F101

C124

R105

C122

IN

6 O

UT

O

UT

7

OU

T

8 O

UT

9

0 R

107

F102

2

G

G 3

5

G

G 10

IN 1 4

C121

C129

VR

F

C135

U102

2

4 3

1

R106

C127

L108

L110

C128

L107

L109

C120

R104

C131

C125

C130

C133

L105

L106

VC

CD

C136

C134

VR

F

C123

9 _PDN

10

_RESET

_SE

N

2

VDD 29

11

VIO

XDIV 26 32

XEN

XMODE 25

8 X

OU

T

31

XTAL1

30

XTAL2

RF

IPP

17

16

RFOH

RFOL

15

SC

LK

1

SD

IO

3

VDD 12

VDD 13

28

VDD

35

NC

RF

IAN

24

RF

IAP

23

20 R

FID

N

RF

IDP

19

RF

IEN

22

RF

IEP

21

18 R

FIP

N

27

AFC

BIN

6 7

BIP

4 B

QN

5 B

QP

14

GND

GND 33 34

NC

U100

C132

13MH

Z_B

B

CL

K13M

_YM

U

XO

EN

A

DC

S_P

AM

_IN

GS

M_P

AM

_IN

SE

RD

AT

PC

SR

X

AF

C

RF

_EN

13MH

Z_B

B

RT

X_Q

P

RT

X_Q

N

RT

X_IP

RT

X_IN

DC

SR

X

EG

SM

RX

SE

RL

E

SE

RC

LK

CL

K13M

_TR

CL

K13M

_MC



7-22

Documents

04 Troubleshooting