Samsung GT-E2121B Manuel utilisateur

GSM TELEPHONE

GT-E2121B

1. Safety Precautions

2. Specification

3. Product Function

4. Array course control

5. Exploded View and Parts list

6. MAIN Electrical Parts List

7. Block Diagrams

8. PCB Diagrams

9. Chart of Troubleshooting

10. Reference data

11. Disassembly and Assembly

Instructions

GSM TELEPHONE CONTENTS

efrcom efrcom

This Service Manual is aproperty of Samsung Electronics Co.,Ltd.

Any unauthorized use of Manual can be punished under applicable

International and/or domestic law.

Samsung Electronics Co.,Ltd.

2010. 03. Rev.1.0

ⓒ

Country Web Site

North America service.samsungportal.com

Latin America latin.samsungportal.com

CIS cis.samsungportal.com

Europe europe.samsungportal.com

China china.samsungportal.com

Asia asia.samsungportal.com

Mideast &Africa mea.samsungportal.com

GSPN (Global Service Partner Network)

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9. Flow Chart of Troubleshooting

This Document can not be used without Samsung's authorization

9-1

9-1. Power On

NotOK

Not OK

Check VPERM_3.0V,

VANA_2.85V, VRF_2.85V,

VSIM_3.0V, VMEM_1.8V,

VGPIO_2.8V of UCP201

Check the UCP201

END

Check the pin 1of

OSC201 produces clock

signal

Solder OSC201 again

Check the L118

concerning about Jig

Power on

Solder L118 again

Is Power On working?

Repeat sequence

Yes

Change battery

Check battery voltage

is higher than 3.3V

Yes

'POWER ON' does not work

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

9-2

EAR_MIC

C150

VBAT

L115

C148

R125

C135

L116

R124

DL118

R120

L113

C137

U313

C133

C134

R126

C147 C149

C136

R119

R117

R122

R138

R139

R137

VCHG_5V

R123

VDD_AIT_3.3V

C132

U314

NC 22

NC 23

NC 25

HY20-AB0310

IFC100

R128

ZD105

ZD104

L111

L117D

UART0_TD

UART0_RD

VCM_OUT

JIG_ON_IF

AUX_DET

JIG_ON

USB_EN

R_ANT

USB_DP

EAR_P

EAR_SW

EAR_MIC_N

EAR_MIC_P

EAR_SW_REF

USB_DM

EAR_N

L201

UART1_RD W5

UART1_RTS

ICHGN

ICHGP

W12

PMU_VPERM W13

PMU_VRF

W14

PMU_VANA

W15

PMU_VIO

UART1_TD V7

UART1_CTS

POK_OUT

PMU_VSIM

V15

PMU_VMEM

V14

PWM_OUT1

PWM_OUT2

PWM_OUT0

POK_IN

L15

FE_CTRL3

L18

UART0_RD

L19

XTAL_32K_1

UART0_TD

K19

XTAL_32K_2

FE_CTRL2 K15

K18

J18

PCM_SYNC

J19

PCM_CLK

PCM_DI

H16

PCM_DO

H18

H19

SIM_CLK

H15

RFIE_N

RFIE_P

RFID_N

RFID_P

XTAL_SHLD

RFIP_N

XTAL_SHLD

RFIP_P

RFOL

XTAL_SHLD

XTAL_26M_2

XTAL_26M_1

UCP201

PNX4852

RFOH

OSC200

OSC201

UART1_TD

ONKEY_1

VPERM_3.0V

VRF_2.85V

VANA_2.85V

VGPIO_2.8V

UART1_RD

ICHGN

ICHGP

ONKEY_2

VSIM_3.0V

UART0_TD

DCSRX_N

EGSMRX_P

EGSMRX_N

SIM_CLK

PON_PA

FSC

DCL

UART0_RD

MOD_STANDBY

DCS_TX

EGSM_TX

DCSRX_P

VMEM_1.8V

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Flow Chart of Troubleshooting

This Document can not be used without Samsung's authorization

9-3

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

9-4

9-2. SIM Part

"Insert SIM" is displayed on the LCD

VSIM_3.0V at the pin#1

SIM200 = "H"?

Check the SIM Power

Yes

Is there any signal pin

#2,3,4 of SIM201? Check UCP201

Yes

Check the SIM Card

END

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Flow Chart of Troubleshooting

This Document can not be used without Samsung's authorization

9-5

C234

1314

1516

C232

SIM201

1010

11 11

1212

VSIM_3.0V

R213

C233

SIM_CLK

SIM_DATA

SIM_RST

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

9-6

9-3. Microphone Part -Phone MIC

Phone MIC does not work

Yes

Not OK

Check the connection

of MIC Solder MIC again

Yes

Replace MIC

Is Phone MIC working?

Solder R118, R132, C141, C145 and

C142 again

Check the components

which are connected to

MIC_BIAS

Solder L108, R131, ZD100 and ZD103

again.

Check the circuit

of MIC PART

END

Not OK

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Flow Chart of Troubleshooting

This Document can not be used without Samsung's authorization

9-7

MAIN_MIC

R118

R132

C142

C146

R130

MIC_BIAS

ZD103ZD100

0ohm

R131

L108

MIC100

C140

C141

C145

MIC_P

MIC_N

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

9-8

9-4. Microphone Part -Earphone MIC

Earphone MIC does not work

Yes

Not OK

Check the connection

of IFC100 Solder pin 3of IFC100 again

Solder L111, L113 and R120 again

Check the circuit

of EAR MIC

Solder R118, R132, C141, C145 and

C142 again

Check MIC_BIAS.

(When UCP201 operates

and call is connected )

END

Not OK

Is Earphone MIC working? Repeat the sequence

Yes

Not OK

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