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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9-6

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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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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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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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