Samsung i6410 Troubleshooting

9. Flow Chart of Troubleshooting

9-1.

Power On

9-1-1.

PDA Part

Insert Power

NG

Check pin4of V_BAT in

U502

is more than

Yes

Check followings

C532 is
C544 is
C540 is

1.8V

3.0V

3.0V

Yes

3.1V

:

No

No

Change the Battery&check ZD802

Check the U504

and the related cuircuit

Check C537 is

Check pin1of TR500

is'H'

Check C530, C531 is

Check pin2of U904 is'H'

1.2V

Yes

Yes

1.2V

Yes

No

No

No

No

Check the U504

and the related cuircuit

Check the UCP900

Check the U504

and the related cuircuit

Check the U904

and the related cuircuit

Yes

Check Other Power Circuit

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9-1

Flow Chart of Troubleshooting

9-2

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Flow Chart of Troubleshooting

9-3

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Flow Chart of Troubleshooting

9-1-2.

Phone Part

Phone Power On'does not work

'

Yes

Check the Battery Voltage

is more than

Check followings

C514 is
C519 is

Check C518 is

Yes

1.2V

1.8V

Yes

3.5V

2.6V

No

:

No

No

Change the Battery

Check the U501

and the related cuircuit

Check the U501

Yes

Check C296 is

Check U405 Pin1is'H'

Check the initial operation

2.85V

Yes

Yes

No

No

Check the U501

Check the UCP400

and the related cuircuit

9-4

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Flow Chart of Troubleshooting

9-5

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Flow Chart of Troubleshooting

9-6

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Flow Chart of Troubleshooting

9-2.

Initial

Initial Failure

Yes

AP_nRST_IN="High"?

at R517

Yes

Check CLK

XTAL_12MHZ_IN/OUT

at

R909

Good

Check the32bit data signal

memory(UCP

&

900)

Bad

No

Check the circuit related to reset

Bad

Change OSC900

Replace PBA

END

Good

9-7

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Flow Chart of Troubleshooting

9-8

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Flow Chart of Troubleshooting

9-9

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Flow Chart of Troubleshooting

9-3.

Charging Part

Abnormal charging part

Yes

Check the C512

>4.3V

Yes

Check R512

='L'?

Yes

No

No

Check the circuit related to

VEXT_FET_5V and

Check the circuit related to

TA_nCHG signal

U500

Check the

≒

END

U500

4.2V

Yes

pin

12

No

Resolder or replace

U500

9-10

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Flow Chart of Troubleshooting

9-11

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Flow Chart of Troubleshooting

9-12

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Flow Chart of Troubleshooting

9-4.

Sim Part

Phone can't access SIM Card

Yes

C721

After Power ON,

Check SIM_CLK Signal on

pin15at SIM700

="3.0

Yes

Yes

V"?

No

No

Check the PMIC(

Check the SIM Clock

U501)

After SIM card insert,

SIM700 pin

H(SIM_RST)"?

="

Check the SIM Card

13

Yes

Yes

END

No

Resolder SIM700 or replace PBA

9-13

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Flow Chart of Troubleshooting

9-14

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Flow Chart of Troubleshooting

9-5-1.

Microphone Part(Main MIC)

Phone Main MIC(For Handset Call, Voice

Video Recording) does not work

YES

Check the signal

at L606, C639(MIC

Signal)

OK

Check the signal

at L605(MIC Supply)

OK

Check the signal

at C641

&

Not OK

Not OK

Not OK

Resolder L606, C639 or Resolder

esolder L605 and Check the U600

R

MIC(MIC

MIC BIAS LDO)

(

Check the U604(SPDT)

600)

Yes

Check all power source

related U603

Yes

Change the PBA

Not OK

Change the PBA

9-15

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Flow Chart of Troubleshooting

VMICBIAS_2.8V

VMICBIAS_2.8V

POWER

POWER

MIC600

L605

C632

C645

C637

MAIN_MIC_P

MAIN_MIC_N

OUT

OUT

4

GND2

GND

3

GND12GND

1

L606

ZD602

C636

C639

V_BAT

MAIN_MIC_N

MAIN_MIC_P

MIC_SEL

VMICBIAS_2.8V

0
1

NO2

9

COM2

8

IN2

VCC

NC

7

R618

MIC_IN_P

1

U604

2

NO1

COM1

IN1

NC1

GND

6

C641

3

4

5

MIC_IN_N

SUB_MIC_N

SUB_MIC_P

U600

MICBIAS_EN

C604

VDD4VOUT

3

CE

GND

GND

5

VAP_SYS_3.0V

1

2

C605

VAP_SYS_3.0V

AUDIO_EN

C610

VAP_SYS_3.0V

VDD

NC|TR

34

OUT

GND

21

OSC600

C606

C607

R601

R603

C608

BT_PCM_IN

BT_PCM_OUT

BT_PCM_SYNC

C609

I2S_SDO

I2S_SDI

I2S_SYNC

AUDIO_EN

C619

C601

8
F

2

D

D

D

D

V

V

A

T

S

4

3

S

S

S

S

V

V

7
H

2

8

7
J

E

D

D

D

D

D

D

D

V

V

V

P

D

A

GPIO1

BICKA
BICKB

CSN|CAD0
CCLK|SCL

CDTI|SDA

LIN1||IN1+

LIN2|IN2+
LIN3|IN3+
LIN4|IN4+

LOUT1|RCP

LOUT2

LOUT3|LOP

RIN1|IN1­RIN2|IN2­RIN4|IN3­RIN4|IN4-

ROUT1|RCN

ROUT2

ROUT3|LON

2

1

S

S
S

S
V

V

8

1

9
F

E

B

GPO2

BICK

CDTO

C600R600

8
A

J1
J9

J5
G8
G2

J6
H6
H8
J2

A2
A3
A4
B5

A7
B9
B6

B2
B3
B4
A5

B7
C9
A6

C603

C611

C613

C615

C616

C617

C618

I2S_SCLK

BT_PCM_CLK

FM_SCL

FM_SDA

MIC_IN_P
RADIO_L
EAR_MIC_P
MSM_SPK_P

RCV_P
CODEC_OUT_L
MSM_MIC_P

MIC_IN_N
RADIO_R
EAR_MIC_N
MSM_SPK_N

RCV_N
CODEC_OUT_R
MSM_MIC_N

C602

8

9

9

2

E

E

D

D

3

T

C

M

D

B

O

O

D

C

C

C

V

O

V

V

T

C
V

D1

SAIN1

C2

SAIN2

C1

SAIN3

I2C

MCKI
MCKO
MDT
MPWR
MUTET

SDTI
SDTIA
SDTIB

SDTO
SDTOA
SDTOB

SYNCA
SYNCB

LRCK
PDN
TEST

U603

C

C

C

N

N

N

3

2

1

C

H5

H4
J4
A1
B1
C8

H1
J8
G1

H2
G9
F2

H9
F1

J3
H3
A9

9-16

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Flow Chart of Troubleshooting

9-17

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Flow Chart of Troubleshooting

9-5-2.

Microphone Part(Sub MIC)

Phone Sub MIC(For Loud SPK Call) does not

work

YES

Check the connection

of HDC806

OK

Check the signal

at L610, C654(MIC

Signal)

OK

Check the signal

at L609(MIC Supply)

Not OK

Not OK

Not OK

Re-Connect!!

Change the Sub MIC module and

Resolder L610, C654

esolder L609 and Check the U600

R

MIC BIAS LDO)

(

Yes

Check the signal

at C641

Yes

Check all power source

related U603

Yes

Change the PBA

Not OK

Check the U604(SPDT)

Not OK

Change the PBA

9-18

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Flow Chart of Troubleshooting

9-19

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Flow Chart of Troubleshooting

9-20

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9-6.

Speaker Part(Melody)

Speaker does not work

Yes

Check the Speaker FPCB

and Speaker Module

Yes

Check the signal at

C640, C642

Yes

No

No

Replace the Speaker Module

Check all power source

related U603

No

Change the PBA

Check the signal at

C648, C646

Yes

Replace the Speaker Module

No

Check the U605 and Resolder the U605

9-21

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Flow Chart of Troubleshooting

9-22

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Flow Chart of Troubleshooting

9-23

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9-7.

Receiver Part

Receiver does not work

Check the connection

of HDC806

Check the signal at

ZD804, ZD805 of HDC806

Does it work?

Yes

Yes

Yes

No

No

No

Replace the Receiver Module

Check all power source

andresolder oreplace U603

related U603

Change the PBA

END

Yes

9-24

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Flow Chart of Troubleshooting

9-25

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Flow Chart of Troubleshooting

9-26

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9-8.

Key Data Input

Check Initial Operation

When one of the keys is

is it displayed on LCD?

When one of the keys is

KEY_IO signal is OK?

pushed,

pushed,

Yes

No

Check the Key FPCB

Yes

No

Replace the PBA

Yes

END

9-27

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Flow Chart of Troubleshooting

9-28

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I
F
C
7
0
0

R
5
0
5

R524

R
5
0
8

R523

R
5
2
1

R
5
2
0

C508

U
5
0
0

D
5
0
0

C
7
1
1

C512

R512

D
5

R
5

0

2

1

2

R
5
0
3
R
5
0
9

C702

U
7
1
0

C
7
0
5

R
8
1
1

C
8
1
2

C703

Z
D
8
1
2

C
8
1
3

C700
C701

U709

Z

C

D

8

8

3

0

3

9

Z

Z

D

D

8

8

0

0

1

0

F805

C832

U
8
0
4

C
7
0
4

Q700

R411

SC220SC221

U403

C404

R702

ZD803

R701

F802F804

H
D
C
8
0
5

F801

C828

U802

C829

R810

R
8
0
8

F806

C831

R809

U803

L801

R
8

C830

0
7

R804

C800

Flow Chart of Troubleshooting

C320

O
S
C
3
0
0

C

C

3

3

1

2

2

1

C
3
1
0

C
3
1
1

Z
D
6
0
2

L
6
0
6

C309

TP301

TP300

L

R

3

3

0

0

0

3

U
3
0
4

MIS300

C

C

C

6

6

6

3

3

3

6

7

9

C

L

6

6

4

0

5

5
C
6
3
2

TP_BT_WAKE

C
3
1
3
C
3
1
5

C314

L301

C
3
1
6

L302

TP_HOST_WAKE

TP305

TP306

9-29

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Flow Chart of Troubleshooting

9-9.

Back Light(for Color Main LCD)

Back light does not work

Yes

Is LCD Contrast set on high

level in the Menu?

Yes

C542, C829

=3.0

Yes

V?

No

No

Set LCD Contrast on high level

Check or replace the U504,

U802

C830

Replace the LCD Module

=18

END

V?

Yes

Yes

No

Check the

U803

9-30

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Flow Chart of Troubleshooting

JIG_ON

VEXT_FET_5V

AP_nRST_IN

R520

VAP_SYS_3.0V

R517

R521

2

1

D500

VREG_MSMP_2.6V

VAP_CORE_1.2V

C532C531

VAP_OTGI_1.2V

C538 C542C537

VAP_MEM_1.8V

VAP_3.0V_MOVI

C539

VAP_MMC_3.0V

C540

VAP_LCD_3.0V

BT_3.0V

VAP_OTG_3.3V

VAP_DAC_3.0V

C543

C541C536

C544

VAP_ARM_1.2V

V_BAT

C528

C527

C529

U502

1

4

OUT VDD

2

GND

NC

GND

5

3

D501

3

AP_PMIC_EN

AP_PS_HOLD

PWR_I2C_SCL
PWR_I2C_SDA

nBATT_FAULT

SET_DVS1
SET_DVS2
SET_DVS3

TP_MR

nPOWER

ON_SW

L504
L505
L506

AP_PS_HOLD

C535

E1

G2

G5

D4

D3

D2

B4

E3

F3

B5

C5

E4

C3

C2

B3

C4

B2

A5

1

2

U504

VCC_COIN

LX1

LX2

LX3

SET1

SET2

SET3

PWREN

PWRON

PWRHOLDF4BUCK3

MR\

ONO\

RSO\

SCL

SDA

SRAD

LBOB

JIGON

REFBP

NC

NC

C530

F5

C546

F1

IN1

G1

IN2

G6

IN3

A2

IN4

C1

IN5

C6

IN6

E2

BUCK1

F2

BUCK2

F6

LDO1

B1

LDO2

A1

LDO3

A3

LDO4

A4

LDO5

A6

LDO6

B6

LDO7

D6

LDO8

E6

LDO9

D5

AGND1

E5

AGND2

D1

PGND1

G3

PGND2

G4

PGND3

VAP_ALIVE_1.2V

VRTC_3.0V

R522

LED_DRV_EN

LED_DRV_SEL

R809

V_BAT

C831

U803

1

PVIN

2

EN|SET

3

SEL

4

VIN

5

NC

6

SW SW

OVP

AGND

PGND

V_BAT

L801

12

LIN

11

10

FB

R807

9

8

7

ZD803

R808

LED_VOUT_18V

LCD_ENLED_VOUT_FB

C828

C830

U802

1

VOUT1

VIN

2

GND

VOUT2

3

EN2

GND

7

VLCD_3.0V

6

5

4

EN1

C829

R810

9-31

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9-32

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9-10.

Camera part

Camera" function does not work

"

(3M

Check the Camera

pin

&

Check CAM_MCLK,

CAMERA)

Yes

connector

Yes

HCD800

4,6,5 = 2.8

pin

3=1.8

Yes

CAM_PCLK

Working?

V?
V?

No

No

No

Reconnect the camera module

Check HDC800

Check HDC800

, U805, U806

Yes

Check pin

Working properly?

Does lt looking good

Is there another problem?

Replace the camera

2, 8, 10, 12

Yes

?

Yes

Yes

module

No

CheckUCP900

Check F800,F803

END

9-33

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9-34

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9-35

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9-10.

Camera part(CIF CAMERA)

Camera" function does not work

"

Yes

Check the Camera

connector

Yes

HDC801

pin

2, 6 = 2.8

pin

&

Check CAM_MCLK,

CAM_PCLK

Working?

4=1.8

Yes

V?

V?

No

Reconnect the camera module

No

Check HDC801, U805, U806

No

Check HDC801

Yes

Check pin

Working properly?

Does lt looking good

Is there another problem?

Replace the camera

1, 3, 17, 21

Yes

?

Yes

Yes

module

No

CheckUCP900

Check F800, F803

END

9-36

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9-37

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9-38

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9-11.

GSM850 Receiver

RX ON

RF input

Amp

PAM200 Pin

>= -65

PAM200 Pin

>= -68

pin

50 >= -70

pin

51 >= -70

: 190

:-50

U200

dBm

Yes

dBm

Yes

dBm

Yes

CH

8

4

dBm
dBm

No

No

Resolder RFS200,C200, C204, L201

Check PAM200

pin

Resolder or change

F200,C210,C211,L202,L203

27 =

pin

L, pin28=H

1=H

Yes

NoNo

Check ANT Switch

control circuit

Resolder PAM200

Yes

U200 pin

Check UCP400

>= 1V

END

1,3,23

Yes

No

Check all voltage

sources of U200

Is it OK?

Yes

No

Check&Resolder

CP PMIC(U501)

Resolder U200

9-39

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9-40

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9-41

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9-12.

GSM850 Transmitter

TX ON(5Level)

Yes

PAM200 Pin

>= 20

PAM200 Pin

>=5.5

U200 pin

>= -5.5

dBm

No

dBm

No

dBm

8

23

55

Yes

Yes

Resolder RFS200,C200, C204, L201

Check PAM200

pin

Resolder or change

C243,R205,R207,R208

27 =

pin

H, pin28=L

1=L

Yes

NoYes

Check ANT Switch

control circuit

Resolder PAM200

No

U200 pin

Check UCP400

1,3,23

>= 1V

Yes

END

No

Check all voltage

sources of U200

Is it OK?

Yes

No

Check&Resolder

CP PMIC(U501)

Resolder U200

9-42

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9-43

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9-44

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9-13.

GSM900 Receiver

RX ON

RF input

Amp

PAM200 Pin

>= -65

PAM200 Pin

>= -68

pin

49 >= -70

pin

48 >= -70

: 190

:-50

U200

dBm

Yes

dBm

Yes

dBm

Yes

CH

8

5

dBm
dBm

No

No

Resolder RFS200,C200, C204, L201

Check PAM200

pin

Resolder or change

F201,C216,C217,L204,L205

27 =

pin

H, pin28=H

1=H

Yes

NoNo

Check ANT Switch

control circuit

Resolder PAM200

Yes

U200 pin

Check UCP400

>= 1V

END

1,3,23

Yes

No

Check all voltage

sources of U200

Is it OK?

Yes

No

Check&Resolder

CP PMIC(U501)

Resolder U200

9-45

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9-46

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Flow Chart of Troubleshooting

9-47

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9-14.

GSM900 Transmitter

TX ON(5Level)

Yes

PAM200 Pin

>= 20

PAM200 Pin

>=5.5

U200 pin

>= -5.5

dBm

No

dBm

No

dBm

8

23

55

Yes

Yes

Resolder RFS200,C200, C204, L201

Check PAM200

pin

Resolder or change

C243,R205,R207,R208

27 =

pin

H, pin28=L

1=L

Yes

NoYes

Check ANT Switch

control circuit

Resolder PAM200

No

U200 pin

Check UCP400

1,3,23

>= 1V

Yes

END

No

Check all voltage

sources of U200

Is it OK?

Yes

No

Check&Resolder

CP PMIC(U501)

Resolder U200

9-48

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9-15.

DCS1800 Receiver

RX ON

RF input

Amp

PAM200 Pin

>= -65

PAM200 Pin

>= -68

pin

47 >= -70

pin

46 >= -70

: 190

:-50

U200

dBm

Yes

dBm

Yes

dBm

Yes

Yes

CH

8

6

dBm
dBm

No

No

Resolder RFS200,C200, C204, L201

Check PAM200

pin

Resolder or change

F203,C224,L207,L208,L209

27 =

pin

H, pin28=

1=H

L

Yes

NoNo

Check ANT Switch

control circuit

Resolder PAM200

U200 pin

Check UCP400

>= 1V

END

1,3,23

Yes

No

Check all voltage

sources of U200

Is it OK?

Yes

No

Check&Resolder

CP PMIC(U501)

Resolder U200

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9-16.

DCS1800 Transmitter

TX ON(5Level)

Yes

PAM200 Pin

>= 20

PAM200 Pin

>=5.5

U200 pin

>= -5.5

dBm

No

dBm

No

dBm

8

21

56

Yes

Yes

Resolder RFS200,C200, C204, L201

Check PAM200

pin

Resolder or change

C243,R201,R202,R203

27 =

H, pin28=

pin

1=L

H

Yes

NoYes

Check ANT Switch

control circuit

Resolder PAM200

No

U200 pin

Check UCP400

>= 1V

END

1,3,23

Yes

No

Check all voltage

sources of U200

Is it OK?

Yes

No

Check&Resolder

CP PMIC(U501)

Resolder U200

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9-17.

PCS1900 Receiver

RX ON

RF input

Amp

PAM200 Pin

>= -65

PAM200 Pin

>= -68

pin

45 >= -70

pin

44 >= -70

: 190

:-50

U200

dBm

Yes

dBm

Yes

dBm

Yes

CH

8

7

dBm
dBm

No

No

Resolder RFS200,C200, C204, L201

Check PAM200

pin

Resolder or change

F204,C227,L212,L213,L214

27 =

pin

L, pin28=

1=H

L

Yes

NoNo

Check ANT Switch

control circuit

Resolder PAM200

Yes

U200 pin

Check UCP400

>= 1V

END

1,3,23

Yes

No

Check all voltage

sources of U200

Is it OK?

Yes

No

Check&Resolder

CP PMIC(U501)

Resolder U200

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9-18.

PCS1900 Transmitter

TX ON(5Level)

Yes

PAM200 Pin

>= 20

PAM200 Pin

>=5.5

U200 pin

>= -5.5

dBm

No

dBm

No

dBm

8

21

56

Yes

Yes

Resolder RFS200,C200, C204, L201

Check PAM200

pin

Resolder or change

C243,R201,R202,R203

27 =

H, pin28=

pin

1=L

H

Yes

NoYes

Check ANT Switch

control circuit

Resolder PAM200

No

U200 pin

Check UCP400

>= 1V

END

1,3,23

Yes

No

Check all voltage

sources of U200

Is it OK?

Yes

No

Check&Resolder

CP PMIC(U501)

Resolder U200

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9-19.

**

WCDMA2100Receiver

If you check the tx chain,

Check the not only RF Device but also resistor, inductor and capacitor.

Continous Rx ON
RF Input
Amplitude

: 10700

:-50

CH

dBm

Yes

No

Normal Condition

Catch the channel?

Yes

No
Check C298
=-56

dBm?

Check Antenna Contact

Check RFS200 or

PAM200

the method like GSM)

(

Yes

Check C299
=-59

dBm?

Yes

Resolder U200 or Change

The End

No

Replace F206

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9-20.

**

WCDMA2100Transmitter

If you check the tx chain,

Check the not only RF Device but also resistor, inductor and capacitor.

Tx ON

Battery Voltage:

AGC for23dBm)

(

3.8V

Yes

No

Check C241

dBm

=8

?

Yes

Check C222

dBm?

=5

No

Yes

Check L201

dBm?

=26

No

Check the U200

Replace F202

Replace PAM201

Check C298

=24

dBm

Check L200

=23

dBm

The End

Yes

?

Yes

?

Yes

No

No

Replace F206

Check RFS200 or

PAM200, R200

the method like GSM)

(

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9-21.

FM Radio Part

FM Radio does not work

Check the connection

with the Earphone.

Is it good

the U300 Pin

Is it good

Battery Voltage)

(

Check

Yes

?

Yes

14,10

?

Yes

No

Insert the Earphone

No

Check the Battery and near circuit.

Check from C323

to EAR_JACK Module Pin

Is it OK?

Yes

Check the C611,C616

Is there signal?

Yes



4

No

Replace ZD601,L603

No

Replace the U300

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9-22.

GPS Part

Check the U301 Pin

GPS does not work

Yes

Is there signal?

Yes

U301 Pin

12 = 2.7V ?

Yes

10

No

Check the UCP400

No

Check the U501(PMIC)

heck the U301 Pin

C

Is there signal?

heck the U301 Pin

C

Is there signal?

Check the R301



Yes





7

1

No

No

Check the U200



Check the U301

Replace the R301

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9-23.

BLUETOOTH

Operate Bluetooth

Yes

Can Bluetooth be ON?

Check L301,C316,
L302

No

abnormal

Check Voltage

1.2

V?

L300

NoYes

Resolder L301,C316,L302

Yes

normal

Check the Antenna

normal

Replace U304

The End

abnormal

Yes

Replace Antenna

while trying
BLUETOOTH on
C320=26MHz?

NO

Resolder OSC300 and

Neighboring Circuits

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Block Diagrams

7.

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8.

Top

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