Samsung SGH-E105 User manual

SGH-E105

SERVICE

Manual

GSM TELEPHONE CONTENTS

1. Specification

2. Exploded Views and Parts List

3. Electrical Parts List

4. Flow Chart of Troubleshooting

5. Block Diagrams

6. PCB Diagrams

GSM TELEPHONE

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2. SGH-E105 Exploded View and its Parts list

2-1

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1. Cellular phone Exploded View

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5. SGH-E105 Block Diagrams

5-1

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1. RF Solution Block Diagram

FEM

FILTER

100KHz

PGA

CHANNEL

FILTER

DAC

SI4201

1/2

PGA

ADC

DET

SI4200

SERIAL DATA

INTERFACE

DSP16000

ARM7TDMI

CSP1093

GSM:890MHz~915MHz

PCS:1850MHz~1910MHz

GSM:925MHz~960MHz

PCS:1930MHz~1990MHz

Antenna

TX VCO

PAM

AFC

CLK

TCVCXO

13MHz

TRIDENT

PLL

SI4133T

BASE

BAND

AUDIO

TXPOWER

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SGH-E105 Block Diagrams

5-2

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2. Base Band Solution Block Diagram

ACC

RTC

PPI

(Programmable

Peripheral I/O)

JTAG/ICE

DSP16000

ARM7TDMI

EMI

RWN

AB(8:0)

DB(15:0)

INT1

IRQx

PAx

RSTB

DSPJTAG

LCD

KEYBOARD

SMART

CARD

POWER

(DC/DC, CHARGER)

MCP

128M FLASH

16M SRAM

Memory Part

X-TAL

32.768 KHz

IRDA

ARM

JTAG/ICE

SIM I/O

GPIO

RS232

TRIDENT

RWN

AB(8:0)

DB(15:0)

INT1

IRQx

PAx

RSTB

JTAG

TX I/Q

RX I/Q

TXP

SERCK

SERLE

SERDA

OCTL

DAICK

DAIRN

DAIDO

DAIDI

AUDIO PART

CSP1093 TXIP

TXIN

TXQP

TXQN

RXIP

RXIN

RXQP

RXQN

SERCK

SERLE

SERDA

RXOVL

TXP

OCTL

RF SOLUTION

-RFIC

-PAM

X-TAL

13MHz

DAI

AUDIO

LCD

MOTOR

B'D to B'D Connector

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4. SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams

4-1

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1.Baseband

1. Power ON

Check the current

consumtion more than

100mA

Check the

Vbat(battery+O)

Voltage more than

3.3V

Download again

Charge the Battery

Check U100 and C113

YES

'Power On' does not

work

Check the pin

15 of U100 is more

than 2.8V

U100 pin 46,39

=2.8V

U100 pin 13

=1.8V

Checktheclocksignal

pin4 of U800

Freq=13MHz ?

Vrms°√300mV ?

Vpp is around

900mVpp

Check the clock generation circuit

(related to OSC801 and U800)

'Power On' does not

work

YES

END

YES

Check C114 and C116

Check C112

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams

4-2

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2. Initial

Check the signal at the

pin28ofU100is

"High" when the phone

is boot on

Check the pin 22 of

U100 is "High"

Check U100

Check the U700

Check the soldered status of

OSC801, R803, U100

YES

Initial Failure

Check the pin 4 of

OSC801 is around 2.8V

Check and resolder LCD connector CN200

if there is solder bridhe between the pins

END

YES

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams

4-3

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3. Sim Part

Check the SIM

connector's (CN100)

connector's to SIM card

Check the circuit related to

U100

resolder or change CN100

Check the related circuit of

CN100

YES

Phone can't access SIM card

Check the circuit around U601 output

and voltage supply circuitry

END

YES

Check the pin 1 of CN100.

Voltage = 3V?

Check the circuit around CN100 input

circuitry

Check the related circuit of

U601 and U100

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams

4-4

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4. Charging Part

Check U100

Check the U700

Check the Q101

YES

Abnormal charging part

END

YES

Check the pin 17,18 of

CN302 VEXT is > 4V?

Check the pin 2 of U103

is "LOW"?

Check the pin 3 of Q101

is "LOW"?

Check the pin 5 of U102

is "3.2~4.2"?

Check if ICHRG is 1V

(during charging) and

around 180mV(full

charging)

YES

Check the U102

Resolder or change R111

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams

4-5

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PWR_SW1

TP101

VRTC

C11

2.2UF

C1142.2UF

VBAT

C10947NF

VCCB

C108

100NF

C124

100NF

47P

C102

R100

1.2K

D100R112

47K,1%

2.2UF

C116

C128

1UF

100N

C104

10UF

C127

C107

33P

R102

390K

C11

2.2UF

VCCA

GND

5OUT

4REF_BYP

C103

33PF

U101

EN3

R101

VBAT

Q100

R111

U103

VOSC

VCCD

C126

10UF

10V

C119

100NF

R106

100NF

C125

VRTC

C111

2.2UF

100PF

C118

2.2UF

VBAT

C123

223

C117

2.2UF

CN100

R113

VBAT

VPAC

C105

2.2U

GND

1ISENSE

PROG4

3VCC

VSENSE

U102

DRIVE

33_RTC_ALM

NEG1

POS

VLDO_752

VREF

VRTC

VSIM

18_CS

_RESET_I

28_RESET_O

VL5S_A

VL5S_B37

VLDO_649

VLDO_113

VLDO_215

VLDO_3

VLDO_444

VLDO_539

VDD6

VDD753

VDDCP58

VDDQ

4VEXT

VIB_DRV8

VL4S_A43

VL4S_B

64UC_IO

66UC_RST

VACC

VBAT

VDD12

VDD347

VDD440

VDD5

RING_DRV9

RING_PWM

17SCLK

16SDI

SIM_CLK

63SIM_IO

61SIM_RST

UC_CLK

GNDD1

GNDQ41

LED_DRV11

PSW1BUF

31PSW2BUF

PWR_KEEP

50PWR_SW2

26EN_R

67EOR_ACC

GND

GND70

GND

GND72

GNDA

GNDA55

GNDCP

1CHG_STAT0

EN_3

21EN_4/EN_4S

EN_

EN_5S

24EN_6

EN_7

ACC_ALM

BAT_TEMP54

3CFET_DRV

CHG_DET

29CHG_STAT1

57CPCN

59CPCP

CREF

330K

U100

R110

2.2UF

C120

C113

C106

33PF

VCC_1.8A

R103

2.4

VRF

Q101

C1057330NF

TA_VEXT

C101

2.2UF

PWR_KEEP

TA_VEXT

CHG_ONICHRG

TA_VEXT

VIB_EN

LCDVIB_EN

CHG_DET

RESET_INT

PWR_ON

JIG_ON

RTCALARM

EN_VRF

EN_VPAC

XOENA

UP_SDI

UP_SCLK

UP_CS

KEY_ROW(0)

KEY_COL(2)

BACKLIGHT

RST

VREF

SIMRST

SIMCLK

SIMDATA

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SGH-E105 Flow Chart of Troubleshooting and Circuit Diagrams

4-6

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5. Microphone Part

6. Speaker Part

Check the reference

voltage on mic path

C418 =2.5V

Reassemblage microphone

resolder or change

C400,R428,R409,R405,R406)

Check U700

YES

Microphone does not work

END

YES

Check the assembled

status of microphone.

Is microphone ok?

Resolder and check the board

to board connector

Check U601

Change or resolder

U700, R201, R202

YES

Speakerdoesnotwork

END

Check the connection

status spk to CN200

Check the PIN 1 of

U402 = 'High' ?

Check U700, R201, R202

Is speaker ok?

YES

Change Speaker

YES

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