Samsung i9103 Block Diagram 7

Level

8.

Block Diagram

8-1.

Repair

3

8-1

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PCB Diagrams

8-2.

8-2-1.

Top

8-2

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8-2-2.

Bottom

8-3

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Flow Chart of Troubleshooting

8-3.

Equipments

Oscilloscope



Power Supply





Digital Multimeter



driver, ESD Safe Tweezer

+

8960 &



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Spectrum Analyzer

8-4

Soldering iron



Level3Repair

8-3-1.

Power On

Cell-phone can`t power on.

Check the Battery Voltage

it more than

Is

Power-on the phone and check

the power-on sound

or motor biration.

Sound or Biration is ok?

Check the PK6

soldering crack, open, etc)

(

Yes

No

3.6

00

V?

No

.

Abnormal

If its voltage level is extremely low(under

Yes

Change the MEA FRONT-OCTA LCD ASSY

Charging the battery by TA.

Change the battery.

Change the PK600(Power-key FPCB)

And retry to the power-on operation.

3.0

V),

Yes

Check the U503 output voltage

C515

(

Check the Clock OSC500

Is that frequency32Khz?

check the initial operation

>1.0

V, C516

Yes

Yes

Yes

END

>1.2

V)

No

No

If the output voltage is not satisfied with normal

condition, Change the U501.

Each voltage level has

※

Change the OSC500.

If OSC400 does not still work, Change the U503

This problem is internal oscillator of U503.

Test condition(Oscilloscope setting)

※

us.div(time division)

:20.0

±

10%

margin.

8-5

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8-6

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8-3-2.

Initial

Initial Failure

Yes

Re-download SW the cell-phone.

Abnormal

Check the AP Reset

AP_nRST(TP)

Check the oscillator clock waveforms.

KHz:OSC500

32.768
Mhz:OSC400

26

=1.8

Yes

Normal

V(High)

No

Abnormal

Check the U503(crack, open, etc.)

Check the OSC500, OSC400(Crack, open etc.)
Check the output clock waveforms and frequency.

Test condition(Oscilloscope setting)

※

:20.0

KHz-C551,26MHz-C446,

32.768

us.div(time division)

Change UCP400,U503

Abnormal

Change PBA

END

8-7

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8-8

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8-3-3.

Check memu setting

Menu→applications→setting→wireless and network

mobile networks→network mode→setting is auto mode

No Service

Menu→Phone→Keypad

*#1234#

Check the CP_VSD1,CP_VSD2_1.8V

CP_VSD1(C349)

No service

Yes

check Phone version

→

PHONE:I9103XXXX or

PHONE:unknown

PHONE:unknown

CP_VSD2(C350)

=0.9~1.4V

=1.8V

→

→

→

?

PHONE:I9103XXXX

Check the connection of RF coaxial cable

No

Replace the UCP300

Yes

Check VREF

VREF(C357)

Change the board

Yes

END

mV

=600

Abnormal

No

Replace the UCP300

8-9

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D
N

S

S

S

S

S

S

S

G

S

S

S

V

V

A

V

V

V

4

4

1

8

3

9

8

1

1

1

J

H

D

G

J

F

D

UCP300

U

1

2

C

L

T

D

L

M

D

R

S

P

P

S

_

_

_

_

S

S

S

S

S

S

S

S

V

V

V

V

3

4

0

1

1

1

L

L

K

_

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

V

V

V

V

V

V

V

V

V

6

4

1

6

6

9

8

4

1

1

1

1

1

1

1

F

P

E

B

R

L

P

N

U

M

N10

I2C1_SCL

P9

I2C1_SDA

P1

I2S2_RX

P2

I2S2_TX

R1

I2S2_WA0

R2

I2S2_WA1

N1

I2S2_CLK0

N2

I2S2_CLK1

PHONE_ACTIVE

U7

DI3_RX_DAT

T7

DI3_TX_DAT

U8

DI3_RX_DATX

T8

DI3_TX_DATX

H6

M1

J6

M2

J5

M3

J4

M4

H2

ON1

J2

CP_ON

ON2_N

D3

SD1_FB

D1

L302

SD1_SW

E1

SD1_SW

C2

SD2_FB

A2

SD2_SW

A3

L303

SD2_SW

U14

CC_CLK

T13

CC_IO

T14

CC_RST

N8

CLKOUT0

P10

CLKOUT2

L17

F32K

M17

OSC32K

N4

T_OUT0

P3

T_OUT1

T11

DMINUS

U11

DPLUS

R6

HW_MON1

P7

HW_MON2

B6

DSP_AUDIO_IN1

R17

USB_DMINUS

T17

USB_DPLUS

N16

USB_ID

P17

USB_TEST

R330

T16

USB_TUNE

U13

USIF1_SCLK

USIF1_CTS_N

USIF1_RTS_N

REF_CLK_EN

SYSCLKEN

RESET2_N

RESET_BB_N

XRESET_N

FCDP_RBN

RESERVED

TP314

U12

T1

U2

U3

T2

TP316

T3

TP317

K3

U9

P12

SYS_CLK

F6

TRIG_B

T5

TRIG_IN

R5

K2

RESET_REQ_N

J3

U10

ALERT_N

T4

TRST_N

T9

RESET_N_RF

D4

ANAMON

A6

E3

FSS

B8

FWP

T6

TCK

U5

TDI

U4

TDO

U6

TMS

K4

TM_EN

J1

VREF

F4

VRTC

H8

RESET_ALL

C357

HSIC_USB_DATA

HSIC_USB_STRB

USIF1_RXD_MRST

USIF1_TXD_MTSR

RESET_PWRDWN_N

B
S
U
_
S

C

C

C

C

C

C

C

S

N

N

N

V

N

N

N

N

7

7

4

1

1

1

1

1

2

R

A

U

A

U

SIM_CLK
SIM_IO
SIM_RST

RESET300

R319

TH300

TP315

R337

SHORT

AP_FLM_TXD
AP_FLM_RXD

REF_CLK_EN
SYS_CLK_EN
SYS_CLK_26M

TRIG_IN

RESET_REQ_N
CP_PMU_RST_OR

TRST_N_CP
RESET_N_RF

TCK_CP
TDI_CP
TDO_CP
TMS_CP

GPS_CLK_EN

PHONE_ACTIVE

DI3_RX_DAT
DI3_TX_DAT
DI3_RX_DATX
DI3_TX_DATX

CP_ON

HW_MON1
HW_MON2

R328

CP_D­CP_D+

HSIC_DATA1
HSIC_STROBE1

C351

OSC300

C352

SHORT

R329

SHORT

IPC_SLAVE_WAKEUP

ACTIVE_STATE_HSIC

For Modem and PMIC, RF Reset

For RF Reset

VRTC_1.8V

C356

V_BAT

1

0

2

2

3

3

R

R

DSP_AUDIO_IN1
IPC_HOST_WAKEUP

CP_VSD1_1.2V

CP_VSD2_1.8V

C350

C349

VSD1_GND

VSD2_GND

D

D

N

N

G

G
_

_

2

1

D

D
S

S

V

V

8-10

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Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.

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8-3-4.

Sim Part

Insert SIM card

Yes

Check the Pin Soldering

of SIM300

Yes

Check the SIM Voltage.

R310)

(

>= 1.8or3.0?

Yes

END

No

No

Resoldering and recheck

Change to the new SIM card.

If it doesn`t still work SIM card after changeing

the SIM card, Check the UCP300(Crack etc)

CP_VSIM

R310

SIM300

1

VCC

2

SIM_RST
SIM_CLK

SIM_IO

C344

C345

C346

C347

C348

VCC

3

CLK

4

GND

5

VPP

6

I/O

7

NC

8

NC

9

NC

10

NC

8-11

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Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.

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8-3-5.

Charging Part

TA/USB Insert

Charging Sequence Start

Vin(C569)

Check the U510(6 pin-EN/SET)

EN/SET=0V(LOW)

Battery is Charging?

Yes

Yes

Yes

Yes

=5V

No

No

No

Check D500=5V,

or may not connected TA/USB

Resolder and Replace UCP400

Resolder or Replace U510

END

8-12

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Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.

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8-13

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Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.

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8-3-6.

Microphone Part(Main MIC)

Check main microphone function

in voice call receiver mode

or in Voice Recording mode

Yes

Check Sub-PCB module

where main MIC is placed

for any damage(Tear in

FPCB, etc)

Yes

Check the voltage at

C605

=2.8V

No

No

Change the Sub-PCB module

Resolder or replace U600

Yes

Check component soldering

statuses of C618, C619

Yes

END

No

Resolder or replace C618, C619

8-14

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Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.

Level3Repair

MICBIAS1_EN

V_BAT

C604

VMICBIAS1_2.8V

U600

4

VDD

3

CE

GND

5

VOUT

1

2

GND

C605

8-15

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8-3-6-1.

Microphone Part(Sub MIC)

Check Sub microphone function

in voice call loudSPK mode

or in camcording mode

Yes

Check RCV-Earjack module

where Sub MIC is placed

for any damage(Tear in FPC,

Check the voltage at

C603

etc)

Yes

=2.1V

No

No

Replace the RCV-Earjack module

Resolder or replace U601

Yes

Check component soldering

statuses of C620, C621

Yes

END

No

Resolder or replace C620, C621

8-16

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Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.

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8-17

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Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.

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8-3-7.

Speaker Part

Play MP3 with maximum volume level.

Check speaker function.

Yes

Check the connection of

HDC702

Yes

Check the signals on

ZD700, ZD701

Yes

No

Reconnect HDC702

No

Resolder or replace U602

Replace the speaker

module

Yes

END

8-18

Confidential and proprietary-the contents in this service guide subject to change without prior notice.

Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.

Level3Repair

T

V

SPK_OUT_P

SPK_OUT_N

ZD700

MAIN_MIC_P_CONN
MAIN_MIC_N_CONN

ZD701

V_BA

C753

JTAG_V_BUS

HDC702

1

1

3

3

5

5

7

7

9

9

10

11 12

11

12

13

13 14

15 16

15

16

17

17 18

19

19

20

21

22

21

23 24

23

24

252526

272728

28

29

30

29

31

313232

33

333434

NC

NC NC

35 36NC37

38

2
4
6
8

V_BUS_5

VMICBIAS1_2.8V

2
4
6
8
10

14

18
20
22

26

30

C608

C607C606

VAP_IO_1.8V

L612

JTAG_USB_ID

USB_ID_SUB_CON

USB_DM_SUB_CON

V_BAT

USB_DP_SUB_CON

C609

C610

C611

C612

R606

C635 R607

C636

SPEECH_PCM_CLK

SPEECH_PCM_SYNC

SPEECH_PCM_OUT

SPEECH_PCM_IN

MM_I2S_CLK

MM_I2S_SYNC
CODEC_MCLK_AP
CODEC_SCL_1.8V

CODEC_SDA_1.8V

CODEC_LDO_EN

MM_I2S_DI

MM_I2S_DO

C631

C617

G3

ADCLRCLK1|GPIO1

E1

GPIO2|MCLK2

H2

GPIO3|BCLK2

F4

GPIO4|LRCLK2

H3

GPIO5|DACDAT2
G4

E5

GPIO7|ADCDAT2
H4

GPIO8|DACDAT3
F5

GPIO9|ADCDAT3
H5

GPIO10|LRCLK3
F6

GPIO11|BCLK3

G1

BCLK1
E3

LRCLK1
D3

MCLK1
H1

SCLK
C6

DMICCLK

F2

ADCDAT1
E4

C628

C632

DACDAT1

G8

CPCA
H8

CPCB

H7

CPVOUTN
G7

CPVOUTP

C9

VMIDC
E6

VREFC
A4

CIFMODE
G2

CS|ADDR
F3

SDA

D4

LDO1ENA
D5

LDO2ENA

9
D

1
D
D
V
A

D
N
G
A

6
D

8

9

D

G

2

D

D

D

D

V

V

P

A

C

U602

D

D

N

N

G

G
A

A

8

7

E

E

2

1

2

9

1

2

F

E

C

D

B

D

2

1

D

D

D

D

D

D

D

D

D

D

D

D

V

V

V

V

1

V

V

2

C

B

K

K

O

O

D

D

P

P

D

D

S

S

L

L

H6

HPOUT1L

G6

HPOUT1R

F9

R601

HPOUT2N

R602

F8

HPOUT2P

G5

BF1TUOPH2KLCRLCDA|6OIPG

D7

IN1LN

C8

IN1LP

B7

C620

IN1RN

C7

C621

IN1RP

B8

IN2LP|VRXN

A8

IN2RP|VRXP

B9

C622

IN2LN|DMICDAT1

IN2RN|DMICDAT2

1

D

D

D

D

N

N

N

D

N

G

G

G

N

F

2

G

K

E

P

G

P

P

R

H

D

C

S

9

7

2

5

1

F

E

H

A

A

LINEOUT1N
LINEOUT1P

LINEOUT2N

LINEOUT2P

LINEOUTFB

SPKOUTLN

SPKOUTLP

SPKOUTRN

SPKOUTRP

1
C

C623

A9

C5

B5

C4

C626

B4

A6

B1

A2

C3

B3

A3

SPKMODE

A7

MICBIAS1

B6

MICBIAS2

1

NC

2

NC

2
D
N
G
K
P
S

RCV_P
RCV_N
EAROUT_FB

C618

C619

SUB_MIC_P
SUB_MIC_N

R604

SHORT

RADIO_L_SI
RADIO_R_SI

C627

VPS_L

VPS_R

SPK_OUT_N
SPK_OUT_P

MIC_P
MIC_N

R603

SHORT

C637

EAROUT_L
EAROUT_R

C634

C633

R610

R609

8-19

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Distribution, transmission, or infringement of any content or data from this document without Samsung’swritten authorization is strictly prohibited.