Samsung SGH-E310C Manuale utente

GSM TELEPHONE

SGH-E310C

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

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1. SGH-E310C Specification

This Document can not be used without Samsung's authorization

1-1

GSM900

Phase 1

EGSM 900

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

270.833kbps

3.692us

270.833kbps

3.692us

270.833kbps

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~5dBm 30dBm~0dBm

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

Sensitivity -102dBm -102dBm -100dBm

TDMA Mux 8 8 8

Cell Radius 35Km 35Km 2Km

1-1. GSM General Specification

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SGH-E310C Specification

1-2

This Document can not be used without Samsung's authorization

TX Power

control level GSM900

533±2dBm

631±2dBm

729±2dBm

827±2dBm

925±2dBm

10 23±2dBm

11 21±2dBm

12 19±2dBm

13 17±2dBm

14 15±2dBm

15 13±2dBm

16 11±3dBm

17 9±3dBm

18 7±3dBm

19 5±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

1-2. GSM TX power class

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2. SGH-E310C Flow Chart of Troubleshooting

2-1

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2-1.Baseband

2-1-1. Power ON

Check the current

consumption more

than 100mA

'Power On' does not work

Check the Voltage

more than 3.3V

Download again

Charge the Battery

Check the pin

11 of U102 is

more than 2.8V

Check U102 and C117

U102 pin 33,39

=2.8V Check U102 and C116

Check the clock

signal at pin3 of

OSC801

Freq=13MHz ?

Vrms≥300mV ?

Vpp is around

900mVpp ?

Check the clock generation

circuit

Check the initial operation

END

Yes

U102 pin 9

=1.8V

Yes

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SGH-E310C Flow Chart of Troubleshooting and Circuit Diagrams

2-2

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2-1-2. Initial

2-1-3. Sim Part

Check the signal at the

pin 19 of U102 is

"High" when the phone

is boot on

Initial Failure

Check U102

END

Yes

Check the if R101 is

"High"

Yes

Check the U701

Check the pin 4 of

OSC801 is around

Check the soldered status of

OSC801,R801,U102

Yes

Check LCD connector CN201,

and resolder bridge

Yes

Check the pin 1 of

CN100. voltage 3V ?

Phone can't access SIM card

Check the SIM

connector's (CN101)

connection to SIM

card

Check the circuit related to

U102

Resolder or change CN101

Check the circuit around CN101

input

circuitry

END

Yes

Check the related circuit of

CN101

Check the circuit around U601

output

and voltage supply circuitry

Yes

Check the related circuit of

U601 and U102

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SGH-E310C Flow Chart of Troubleshooting and Circuit Diagrams

2-3

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2-1-4. Charging Part

Check the pin 17, 18

of CN300 is

TA_VEXT>4?

Abnormal charging part

Check the pin 2 of

Q102 is "low"?

Replace TA,Check CN300

Check the Q102

Check the Q100

END

Yes

Check the pin 3 of

Q100 is "low"?

Check the pin 5 of

Q102 is "3.2~4.2V"? Check the Q102

Yes

Check the ICHRG is

1V(during charging)

and around

180mV(full charging)?

No Resolder or change R102

Yes

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SGH-E310C Flow Chart of Troubleshooting and Circuit Diagrams

2-4

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SAMSUNG Proprietary-Contents may change without notice

SGH-E310C Flow Chart of Troubleshooting and Circuit Diagrams

2-5

This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice

SGH-E310C Flow Chart of Troubleshooting and Circuit Diagrams

2-6

This Document can not be used without Samsung's authorization

SAMSUNG Proprietary-Contents may change without notice

SGH-E310C Flow Chart of Troubleshooting and Circuit Diagrams

2-7

This Document can not be used without Samsung's authorization

2-1-5. Microphone Part

2-1-6. Speaker Part

check the soldered

status of microphone.

Microphone does not work

Check the reference

voltage on mic path

C431 ≒2.5 V

Resolder microphone

Resolder or change

R424,C431,R413,C410,R408,R411

END

Yes

Is microphone ok? No Check U701

Check the connection

from CN201 to LCD

module

Speaker does not work

Check the PIN 4 of

U401='High'?

Check the circuit related to U401

Check U601

Is speaker ok?

Check U701

END

Yes

Is speaker ok?

Change Speaker

Yes

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