Samsung SGH-E710 Manuel utilisateur

SGH-E710

SERVICE

Manual

GSM TELEPHONE CONTENTS

1. Specification

2. Flow Chart of Troubleshooting

3. Exploded Views and Parts List

4. Electrical Parts List

5. Block Diagrams

6. PCB Diagrams

GSM TELEPHONE

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1. SGH-E710 Specification

This Document can not be used without Samsung's authorization

1-1

GSM900

Phase 1 EGSM900

Phase 2 DCS1800

Phase 1

Freq. Band[MHz]

Uplink/Downlink

890~915

935~960

880~915

925~960

1710~1785

1805~1880

ARFCN Range 1~124 0~124 &

975~1023 512~885

Tx/Rx Spacing 45MHz 45MHz 95MHz

Mod. Bit Rate/

Bit Period

270.833KHz

3.692us

270.833KHz

3.692us

270.833KHz

3.692us

Time Slot Period

/Frame Period

576.9us

4.615ms

576.9us

4.615ms

576.9us

4.615ms

Modulation 0.3GMSK 0.3GMSK 0.3GMSK

MS Power 33dBm~13dBm 33dBm~13dBm 33dBm~13dBm

Power Class 5pcl~15pcl 5pcl~19pcl 0pcl~15pcl

Sensitivity -102dBm -102dBm -100dBm

TDMA Mux 8 8 8

Cell Ridius 35Km 35Km 2Km

1. GSM General Specification

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SGH-E710 Specification

1-2

This Document can not be used without Samsung's authorization

2. GSM TX power class

TX Power

Control Level GSM900

533±2dBm

629±2dBm

727±2dBm

825±2dBm

923±2dBm

10 21±2dBm

11 19±2dBm

12 17±2dBm

13 15±2dBm

14 13±2dBm

15 11±2dBm

16 9±3dBm

17 7±3dBm

18 5±3dBm

19 3±3dBm

TX Power

Control Level DCS1800

030±3dBm

128±3dBm

226±3dBm

324±3dBm

422±3dBm

520±3dBm

618±3dBm

716±3dBm

814±3dBm

912±4dBm

10 10±4dBm

11 8±4dBm

12 6±4dBm

13 4±4dBm

14 2±5dBm

15 0±5dBm

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2. SGH-E710 Flow Chart of Troubleshooting

2-1

This Document can not be used without Samsung's authorization

1. Power ON

'Power ON' Does not work

Check the current consumption

Current consumption

≥100mA ?

Check the V bat. voltage

Down load again

Voltage ≥ 3.3V ?

Check the pin of U100

pin #11 ≥ 2.8V ?

Pin #9=1.8V?

Check the Initial operation

END

pin #39 and #33 = 2.8V

Charge the Battery

Check the clock generation

circuit (OSC400, U402 pin#4)

Check the clock signal

at pin #3 of OSC400

Freq.=13MHz,Vrms 300mV

Check U100 and C109

Check U100 and C110

YES

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams

2-2

This Document can not be used without Samsung's authorization

2. System Initial

The pin #9 of U100 = 1.8V

and pin #11 of U100=2.8V?

Initial Failure

Is the pin #19 of U100

" Low --> High" ?

There is 32.768KHz wave

form at the C324, C325 ?

Is the pin #25 of U100

is High ?

The voltage is "High"

at the C106,C112,C113 ?

LCD Display OK ?

Sound operation OK ?

END

Check the U303

Check the U300

Check the U100

Check the LCD part

Check the Audio part

YES

Check the U100

(If it has some problem,

it has to be replaced.)

Check the U100

(If it has some problem,

it has to be replaced.)

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams

2-3

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3. SIM Part

Is there any signal

pin #52,53,54 of U100 ? Check the U303

"Insert SIM" is displayed on the LCD

END

Check the SIM Card

YES

Is there any signal

pin #1,2,3,6 of CN100 ? Check the U100

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams

2-4

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4. Charging Part

The pin #17,18 of CN101

(VEXT) is 5V ? Replace TA or check CN101

Abnormal charging operation

END

Check the U102

YES

The pin#2 of U102 is Low?

YES

The pin#3 of U102 is Low?

YES

Check the U102

The pin#5 of U101 is

3.2~4.2V? Check the U101

The ICHRG =1V(during charging)

&180mV(fullcharging)?

YES

Solder again or change

R119

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams

2-5

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100NF

C105

C103

470NF

VRF

10UF

10V

R120

47K,1%

Q102

DTC144EM

C116

100PF

C115

C107

10UF

10V

2.2UF

C111

R121

VRTC

VSI

VLDO_1

VLDO_2

VLDO_3 39

VLDO_4

VLDO_5

VLDO_6 42

VLDO_7 40

VREF

VDD5

VDD67

VEXT

VIB_DRV

VL4S_A 36

VL4S_B

VL5S_A 32

VL5S_B

UP_CLK

52 UP_IO

54 UP_RST

3 VACC

2 VBAT

VDD12 10

VDD34

55 RING_PWM

RTC_ALMN

17 SCLK

15 SDI

16 SDO

SIM_CLK

SIM_IO

SIM_RST

LED1_DRV

LED2_DRV

20 PSW1_BUF

PWR_KEEP

46 PWR_SW1N

PWR_SW2

RESETN

RING_DR

62GN

64GN

65GN

GNDD

GNDD1

GNDQ

INTRQ

EN_5B

57 GND

67GN

GND

59 GND

43 BTEMP

CREF

CSN

EN_3

EN_4[0]

EN_4[1]

EN_5

EN_5A

U100

44 ADC_AUX1

ADC_AUX2

ADC_TRIG

2 Q100

C100

33PF

VRTC VBAT

2 2

4 4

6 6

1.2K

CN100

VCCA

R115

VPAC

10K,1%

R118

C109

2.2UF

VCC B

2.2UF

C112

2.2UF

C106

DRIVE

GND

1 ISENSE

PRO G 43 VCC

VSENSE

U101

R11 0

390K

VRTC

10K,1%

R119

C102

33PF

VCCDVCC_1.8A

R114

330K

C117

10UF

10V

VBAT

C104

100NF

U103

C108 C114

2.2UF

VOSC

470NF

C113

10UF

10V

C101

33PF

VBA T

C110

2.2UF

Q101

VREF

BACKLIGHT1

BACKLIGHT2

RST

RTCALAR M

PWR_KEEP

EN_VPAC

XOENA

UP_SDI

UP_SCLK

UP_CS

TA_VEXT

CHG_ON

SIMCLK

SIMRST

SIMDATA

KEY_ROW(0)

KEY_COL(2)

CHG_DET

PWR_ON

JIG_ON

EN_VRF

ICHRG

TA_VEXT

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams

2-6

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5. Microphone Part

Micro-phone does not work

Is the assembled status of

Microphone O.K?

YES

Reassemble the microphone

Check the DC bias voltage on

Mic path.

The voltage of C237 is

2.2V±10%?

NO Solder the microphone again

or Replace

C230,C237,R217,R218,R219

Is microphone OK? NO Check U300

END

YES

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SGH-E710 Flow Chart of Troubleshooting and Circuit Diagrams

2-7

This Document can not be used without Samsung's authorization

6. Speaker Part

Is the terminal of speaker

is O.K?

NO Replace the speaker

Are there any signal

at the pin #40,42 of CN200?

NO Check the LCD module

& Replace CN200

There is no sound from speaker

YES

Thetypeofsoundfrom

the speaker is Melody?

YES NO

Are there any signal

at the pin #5,7 of U201?

Are there any signal

at the pin #3,9 of U201?

Check

U201,

U303

NO NO

Pin #4 of U201

is Low?

Pin #4 of U201

is High?

Check U202 Check U300

NO NO

YES YES

YES

END

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