Samsung SGH-S410i Service Manual

GSM TELEPHONE

SGH-S410i

GSM 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-S410i Specification

1-1. GSM General Specification

GSM900 Phase 1

Freq. Band[MHz]

Uplink/Downlink

ARFCN range 1~124

Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz

Mod. Bit rate/

Bit Period

Time Slot

Period/Frame

Period

Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK

MS Power 33dBm~13dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm

890~915 935~960

270.833kbps

3.692us

576.9us

4.615ms

EGSM 900

Phase 2

880~915 925~960

0~124 &

975~1023

270.833kbps

3.692us

576.9us

4.615ms

DCS1800

Phase 1

1710~1785 1805~1880

512~885 512~810

270.833kbps

3.692us

576.9us

4.615ms

PCS1900

1850~1910 1930~1990

270.833kbps

3.692us

576.9us

4.615ms

Power Class 5 p c l ~ 1 5 p c l 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl

Sensitivity -102dBm -102dBm -100dBm -100dBm

TDMA Mux 8 8 8 8

Cell Radius 35Km 35Km 2Km -

1-1

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SGH-S410i Specification

1-2. GSM TX power class

TX Power

control level

533±2dBm

631±2dBm

729±2dBm

827±2dBm

925±2dBm

10 23±2 dBm

11 21±2 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

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

PCS1900

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

7 16±3 dBm

8 14±3 dBm

9 12±4 dBm

10 10±4 dBm

11 8±4 dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

7 16±3 dBm

8 14±3 dBm

9 12±4 dBm

10 10±4 dBm

11 8±4 dBm

12 6±4 dBm

13 4±4 dBm

14 2±5 dBm

15 0±5 dBm

1-2

15 0±5 dBm

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2. SGH-S410i Flow Chart of Troubleshooting

2-1.Baseband

2-1-1. Power ON

'Power ON' Does not work

Check the current consumption

Current consumption

≥

100mA ?

YES

Check the Vbat voltage

Voltage≥3.3V ?

YES

Check the pins of U401

C415≥1.8V ?

YES

C418 and C419 = 2.9V?

NO

Download again

Charge the Battery

Check U401 and C415

YES

Checktheclocksignal

at pin#3 of OSC101

Freq.=13MHz,Vrms≥300mV

YES

Check the Initial operation

END

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C420=1.5V?

YES

2-1

NO

Check U401 and C420

Checktheclockgeneration

circuit (OSC101, F100 pin#4)

SGH-S410i Flow Chart of Troubleshooting

K12

VSIM

VRTC LED2_DRV LED1_DRV

RING_DRV

VIB_DRV

VLDO_7 VLDO_6

VL5S_B VL5S_A

VLDO_5

VL4S_B

VL4S_A VLDO_4 VLDO_3 VLDO_2 VLDO_1

VACC

CSN_PSC

SCLK_PSC

SDO_PSC

SDI_PSC

VEXT

VBAT

H11 G12 G13 F13 F15 C12 A14 C9 D10 B10 B11 A12 B12 A13 J12 G11 F14

K8 L8 N7 M7

E14 E13

VSIM

VCCB_2.9V

KEY_BL2 KEY_BL1

MOT

DCS_TX_EN GSM_TX_EN

UP_CS UP_SCLK UP_SDO UP_SDI

VCCD_1_8

C414

VCCA_2.9V

C415

VRF_2.9VVCCD_2.9V

C416 C417

C418

VCCD_1_5

C419

C420

C421

VRTC_2.9V

R405

S O P

G E N

M400

AFC

R108

C131

1

VT

2

GND

OSC101

VCC

OUT

VRF_2.9V

4

3

R124

C125

C132

C127

R112

VRF_2.9V

F100

15

NC

VCC

2

A

3

GND

R111

4

Y

L109

C126

C133

C128

R110

R109

CLK13M_TR

C129

CLK13M_MC

CLK13M_YMU

CLK13M_RF

2-2

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2-1-2. Initial

SGH-S410i Flow Chart of Troubleshooting

Initial Failure

The voltage at the C415=1.8V?

The voltage at the C419=2.9V?

YES

ThevoltageattheZD405

" Low --> High" ?

YES

There is 32.768KHz wave

form at the C216, C217 ?

YES

The voltage on R412 is

"Low --> High" ?

NO

Check the U401

(If it has some problem,

it has to be replaced.)

Check the U401

(If it has some problem,

it has to be replaced.)

Check the OSC201

YES

The voltage is 2.9V

at the C416,C418,C419 ?

YES

LCD Display OK ?

YES

Sound operation OK ?

YES

END

2-3

NO

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Check the U401

Check the LCD part

Check the Audio part

SGH-S410i Flow Chart of Troubleshooting

N

E

_

E

_

0

_

D

T

A

M

A

D

C

D

_

I

C

C M

M

M _

_

_ 9

ADC_AUX2 ADC_AUX1

9 M

P E E K

_ R

W P

N E

RTC_ALMN

_ G

Q

N

R

R _

T

B

I

N

I

V

0

9

1

L

VREF CREF

N

F

2

1

U

W S

_ R

W P

4 1

C

O

W

B

_

S

_

T

_ R

W P

5 1

C

E

1

E

D

S

W

O

E

S

M

R

P

9

0

7

1

L

K

N

D15 E10

A10 E9

H10

C426

R407

R408

3 O

I P

4 1 L

C

3

0

T

4

R

O

I

1

I

2

P

X

P

X

4

9

4

9

1

1 F

N

H

M

Q E

P

R

E

K

E

L

6

K

N

C

4

R

M

T

S

O

I

R

Y

W

U

P

A

S

P

O

_

L

2

1

0

9

3

A

C

S

T R

O

7

6

1

H

G

0

2

1

M

O

W

I

P

5

9

7

1

G

P

V

8

2

6

5

7

2

2 O

I P

9 1 V

3

2

O

I

P

9

7

3

6

1

U

R

U

W

VBAT

VIB_EN

OSC201

INTRQ PWR_KEEP

C217C216

N O

_ G

I J

N O

_ R

W P

F U B

_ 1

W S P

RST

ZD405

2-4

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2-1-3. Sim Part

"Insert SIM" is displayed on the LCD

SGH-S410i Flow Chart of Troubleshooting

The voltage is 2.8V

at the pin #1 of CN401?

YES

Is there any signal

pin #2,3,4 of CN401 ?

YES

Check the SIM Card

NO

Check the U401

NO

Check the U401 & OSC201

END

2-5

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SGH-S410i Flow Chart of Troubleshooting

2-1-4. Microphone Part

Micro-phone does not work

Is the assembled status of

Microphone O.K?

YES

Check the DC bias voltage on

Mic p ath.

The voltage of C437 is

about 2.2V±10%?

YES

Is microphone OK?

YES

NO

Reassemble the microphone

Solder the microphone again

or Replace C437,C438,R430,

R433,R458,R453,C430,C432,

R421,R422

Check U401

END

2-6

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SGH-S410i Flow Chart of Troubleshooting

MICINP

MICOUTP

MICINN

MICOUTN

VCCA_2.9V

R428

C437

C438

C435

C436

R424

R457

C465

C466

R421

R422

C430

C432

C464

R458

R453

R430

R433

HPOUT-R

HPOUT-L

JACK_INT

EAR_L

EAR_R

MIC-

MIC+

C474 1UF

C434

1UFC473

MIC400

C433

C439

C440

2-7

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SGH-S410i Flow Chart of Troubleshooting

2-1-5. Speaker Part

There is no sound from speaker

Is the terminal of speaker O.K?

YES

Are there any signal

at the pin #40,42 of CN507?

YES

Thetypeofsoundfrom

YES

Are there any signal

at the pin #1,5 of U403?

Pin #2 of U403

is Low?

the speaker is Melody?

NO

NO NO

NO

Check U402, U401, OSC201

Replace the speaker

Check the LCD module

&ReplaceCN507

NO

Are there any signal

at the pin #3,15 of U403?

YESYES

Pin #2 of U403

is High?

YES

Pin 14 of U403

is 3.4-4.2V?

NO

Pin 3 of U303

is High?

NO

Check U401

END

YES

Check U403

YES

Check U303

2-8

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YES

2-1-6. Camera Part

Camera function does not work

SGH-S410i Flow Chart of Troubleshooting

Check the connect CN507?

YES

Pin#4ofU306=1.8V?

YES

Pin#9ofU302=2.8V?

YES

Pin#3 of OSC300 is 24.5MHz?

YES

NO

Connect the CN507

Check the U306&R376

YES

Pin#2ofU302=High?

Pin#3ofQ301=1.8V?

NO

Pin#1ofQ301=Low?

NO

YES

Check

OSC201

Replace

OSC300

Check

Q301

Is that clock signal at the

pin #30 of CN507?

YES

Pin#56 of CN507 is High?

END

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NO

Check

OSC201

Check U300

2-9