Samsung M3710 Troubleshooting

9. Flow Chart of Troubleshooting

9-1.

Power On

Power On'does not work

'

Check the current consumption

more than

C301(VBAT

Check the MEM_1.8V of U304

is more than

Yes

mA

100

Yes

Check the VBAT

more than

)=3.0

1.8V

3.3V

Yes

Yes

1.8V

V?

No

Download again

No

Check the Battery

No

Check the related circuit

①

No

Check the U304 and L301

Yes

Check U304

V_DIG

3.0
V_ANLG

3.0

1.2

Check CLK32K

Freq

Check the initial operation

V_ANLG

=32

END

=3.0V

=3.0V

=1.2V

Yes

KHz

Yes

Yes

②

No

Check the U304 and C328, C329, C347

③

No

Check the clock32KHz_DIGIT

9-1

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

SSUUBBVV

TTAABBVV

775533CC

550033CC

PP__PPMMAA

NN__PPMMAA

TTUUOO__LL
TTUUOO__RR

GGLLNNAA__VV00..33
VV88..22__AA__MMAACC

OOII__MMAACC__VV88..22
VV88..11__EERROOCC__MMAACC
BBIIVV__VV22..33
HHCCUUOOTT__VV00..33

GGLLNNAA__VV22..11
FF

RRVV__VV33..11

11PPMMAA__V

V00..33

DDSS__VV22..33

DDCCLL__VV99..22
MMAARRVVNN__BBSSUU__VV33..33

FFRRVV__VV77..22
GGTTOOBBSSUU__VV55..22

OOXXCCVV__VV33..11

CCCCVVMMIISS

GGIIDD__VV00..33

665533CC

332233CC 663333CC

660033CC

880033CC

662233CC

554433CC

113333CC772233CC

333333CC

223333CC003333CC

443333CC664433CC

110033CC

444433CC

001133CC

111133CC

884433CC552233CC

774433CC992233CC

9

3

8

9

C9C

G3G

D8D

D9D

S

S

B

B

A

A

N

N

I

I

T

T

T

T

U

U

O

O

T

T

T

T

B

B

C

C

A

A

A

A

V

V

V

V

B

B

B

B

33AA

11NNII

11DD

22NNII

44BB

33NNII

55CC

44NNII

66DD

55NNII

77DD

66NNII

88BB

77NNII

44JJ

88NNII

88HH

99NNII

55HH

0011NNII

99HH

1111NNII

44HH

11AANNII

44GG

22AANNII

55GG

11BBNNII

66GG

22BBNNII

11HH

11VVLLNNII

11EE

22VVLLNNII

99BB

11OODDLLAA

77BB

22OODDLLAA

55EE

11OODDLLXXUUAA

55FF

22OODDLLXXUUAA

66EE

33OODDLLXXUUAA

66FF

44OODDLLXXUUAA

77EE

55OODDLLXXUUAA

22HH

11OODDLLVVLL

22EE

22OODDLLVVLL

66AA

11OODDLLCCHH

55AA

22OODDLLCCHH

55BB

11OODDLLSSMM

66BB

22OODDLLSSMM

88AA

11OODDLLFFRR

77AA

22OODDL

LFFRR

44FF

OODDLLCCLL

33BB

OODDLLMMIISS

44AA

OODDLLOOII

D

D

D

D

N

N

N

N

G

G

G

G

D

D

A

A

8

7

9

F8F

F7F

F9F

553333CC882233CC

11FF

NNIIXX

11GG

TTUUOOXX

330033CC

66HH

NN11CC

77JJ

PP11CC

33CC

11BBFF

22CC

22BBFF

22AA

000033LL

11XXLL

11CC

110033LL

22XXLL

77GG

NNNNIIXXRR

77HH

PPNNIIXXRR

33JJ

LLPPHH

22JJ

RRPPHH

99GG

NNTTUUOO

88JJ

PPTTUUOO

99EE

AANNIIGGHHCC

88EE

BBNNIIGGHHCC

440033UU

44DD

11CCPP

44EE

000033PPTT

22CCPP

33DD

ZZHHKK2233

88CC

991133CC

LLVV
SSAAIIBBVV
LLCCSS
AADDSS
BBQQRRII
PPBBFFEERR
BBTTEESSEERR
BBRRWWPPFFHH
BBNNOORRWWPP
11TTSSEETT
22TTSSEETT

CCNN
CCNN
CCNN
CCNN
CCNN
CCNN

3

3

1

1

4

4

2

2

D

D

D

D

D

D

D

D

D

D

N

N

N

N

N

N

N

N

S

S
N

N

G

G

S

S

G

G

G

G

G

G

G

G

V

V

P

P

P

P

P

P

P

P

8

1

2

6

5

J6J

J5J

G8G

B1B

B2B

002233CC

33HH
66C

C

77CC
44CC

220033PPTT

55DD

112233CC

33EE
22DD
33FF
22FF
22GG

11AA
99AA
11JJ

99JJ
11
22

994433CC

000033CCSSOO

LL__KKCCAAJJRRAAEE
RR

__KKCCAAJJRRAAEE

NN__KKPPSS
PP__KKPPSS

CCPP

QQEERR__KKLLCC__TTBB

KK2233KKLLCC

LLCCSS
AADDSS

QQRRII__UUMMPP

TTEESSEERR__BBBB

TTEEDD__CCCCAA

YYEEKKNNOOPP

222233CC

110033RR

220033CC

440033CC

331133CC

881133CC

PPUUKKCCAABB

440033TTAABB

EERROOCCVV__VV22..11

MMEEMM__VV88..11

441133CC

FFII__VV55__SSUUBBVV

C
5
0
6

L410
C331
C318

C344

C349

C
3
2
9

C323

C
3
0
1

C336

L

4
0
9

C
3
2
6

C

R

3

C
3
0
3

C305

3
1
8

C306

C
3
1
1

5
8

C357

C
3
1
0

U301

C
3
2
0

C308
C236
C235

C347

O

C325

T
P
3
0
0

S
C
3
0
0

0

4

U

3

C302

L

3
0
1

C

C

3

3

4

2

6

7
C

C

3

3

4

3

5

3

C

C

3

3

1

5

9

6

C

C

3

3
3
4

C
3
2
1

C
3
3
0

L

2

3

8

0
0

C
3
3
2

2

2

2

T

2

P

0
3
P
T

C335

C313

C314

C348
C322

C
2
2
7

9-2

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

9-2.

Initial

Initial Failure

Yes

U304 pin E3(RESETB

check the test point)

(

Check the16bit data signal

memory CE

&

END

)="

Yes

Yes

H"?

No

Check the circuit related to reset

9-3

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

SSUUBBVV

TTAABBVV

775533CC

550033CC

PP__PPMMAA

NN__PPMMAA

TTUUOO__LL
TTUUOO__RR

GGLLNNAA__VV00..33
VV88..22__AA__MMAACC

OOII__MMAACC__VV88..22
VV88..11__EERROOCC__MMAACC
BBIIVV__VV22..33
HHCCUUOOTT__VV00..33

GGLLNNAA__VV22..11

RRVV__VV33..11

FF

11PPMMAA__V

V00..33

DDSS__VV22..33

DDCCLL__VV99..22
MMAARRVVNN__BBSSUU__VV33..33

FFRRVV__VV77..22
GGTTOOBBSSUU__VV55..22

OOXXCCVV__VV33..11

CCCCVVMMIISS

GGIIDD__VV00..33

665533CC

332233CC 663333CC

660033CC

880033CC

662233CC

554433CC

113333CC772233CC

333333CC

223333CC003333CC

443333CC664433CC

110033CC

444433CC

001133CC

111133CC

884433CC552233CC

553333CC882233CC

774433CC992233CC

3

9

8

9

G3G

D9D

C9C

D8D

S

S

B

B

A

A

N

N

I

I

T

T

T

T

U

U

O

O

T

T

T

T

B

B

C

C

A

A

A

A

V

V

V

V

B

B

B

B

33AA

11NNII

11DD

22NNII

44BB

33NNII

55CC

44NNII

66DD

55NNII

77DD

66NNII

88BB

77NNII

44JJ

88NNII

88HH

99NNII

55HH

0011NNII

99HH

1111NNII

44HH

11AANNII

44GG

22AANNII

55GG

11BBNNII

66GG

22BBNNII

11HH

11VVLLNNII

11EE

22VVLLNNII

99BB

11OODDLLAA

77BB

22OODDLLAA

55EE

11OODDLLXXUUAA

55FF

22OODDLLXXUUAA

66EE

33OODDLLXXUUAA

66FF

44OODDLLXXUUAA

77EE

55OODDLLXXUUAA

22HH

11OODDLLVVLL

22EE

22OODDLLVVLL

66AA

11OODDLLCCHH

55AA

22OODDLLCCHH

55BB

11OODDLLSSMM

66BB

22OODDLLSSMM

88AA

11OODDLLFFRR

77AA

22OODDL

LFFRR

44FF

OODDLLCCLL

33BB

OODDLLMMIISS

44AA

OODDLLOOII

D

D

D

D

N

N

N

N

G

G

G

G

D

D

A

A

8

7

9

F8F

F7F

F9F

11FF

NNIIXX

11GG

TTUUOOXX

330033CC

66HH

NN11CC

77JJ

PP11CC

33CC

11BBFF

22CC

22BBFF

22AA

000033LL

11XXLL

11CC

110033LL

22XXLL

77GG

NNNNIIXXRR

77HH

PPNNIIXXRR

33JJ

LLPPHH

22JJ

RRPPHH

99GG

NNTTUUOO

88JJ

PPTTUUOO

99EE

AANNIIGGHHCC

88EE

BBNNIIGGHHCC

440033UU

44DD

11CCPP

44EE

000033PPTT

22CCPP

33DD

ZZHHKK2233

88CC

991133CC

LLVV
SSAAIIBBVV
LLCCSS
AADDSS
BBQQRRII
PPBBFFEERR
BBTTEESSEERR
BBRRWWPPFFHH
BBNNOORRWWPP
11TTSSEETT
22TTSSEETT

CCNN
CCNN
CCNN
CCNN
CCNN
CCNN

1

1

4

4

2

2

3

3

D

D

D

D

D

D

D

D

D

D

N

N

N

N

N

N

N

N

S

S
N

N

S

S

G

G

G

G

G

G

G

G

G

G

V

V

P

P

P

P

P

P

P

P

8

1

2

6

5

J6J

J5J

B1B

B2B

G8G

002233CC

33HH
66C

C

77CC
44CC

220033PPTT

55DD

112233CC

33EE
22DD
33FF
22FF
22GG

11AA
99AA
11JJ

99JJ
11
22

994433CC

000033CCSSOO

LL__KKCCAAJJRRAAEE
RR

__KKCCAAJJRRAAEE

NN__KKPPSS
PP__KKPPSS

CCPP

QQEERR__KKLLCC__TTBB

KK2233KKLLCC

LLCCSS
AADDSS

QQRRII__UUMMPP

TTEESSEERR__BBBB

TTEEDD__CCCCAA

YYEEKKNNOOPP

222233CC

110033RR

220033CC

440033CC

331133CC

881133CC

PPUUKKCCAABB

440033TTAABB

EERROOCCVV__VV22..11

MMEEMM__VV88..11

441133CC

FFII__VV55__SSUUBBVV

C
5
0
6

L410
C331
C318

C344

C349

C
3
2
9

C323

C
3
0
1

C336

L

4
0
9

C
3
2
6

C

R

3

C
3
0
3

C305

3
1
8

C306

C
3
1
1

5
8

C357

C
3
1
0

U301

C
3
2
0

C308
C236
C235

C347

O

C325

T
P
3
0
0

S

C

3

0

0

0

4

U

3

C302

L

3
0
1

C
3
2
7

C
3
4
5

C
3
1
9

C

C
3
4
6

C
3
3
3

C
3
5
6

C

3

3
3
4

C
3
2
1

C
3
3
0

L

2

3

8

0
0

C

3

3

2

2

2

2

2

P

T

0
3
P
T

C335

C313

C314

C348
C322

C
2
2
7

9-4

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

9-3.

Charging Part

Abnormal charging part

Check the U304 pin E9

Yes

>5.0V

Yes

C322(ACC_DET

L"?

="

Yes

No

)

No

Check the circuit related to

VBUS_5V_IF

Check the circuit related to

ACC_DET

signal

Check the U304 pin D5

1.25V

≒

Yes

END

No

Resolder or replace U304

9-5

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

SSUUBBVV

TTAABBVV

775533CC

550033CC

PP__PPMMAA

NN__PPMMAA

TTUUOO__LL
TTUUOO__RR

GGLLNNAA__VV00..33
VV88..22__AA__MMAACC

OOII__MMAACC__VV88..22
VV88..11__EERROOCC__MMAACC
BBIIVV__VV22..33
HHCCUUOOTT__VV00..33

GGLLNNAA__VV22..11

RRVV__VV33..11

FF

11PPMMAA__V

V00..33

DDSS__VV22..33

DDCCLL__VV99..22
MMAARRVVNN__BBSSUU__VV33..33

FFRRVV__VV77..22
GGTTOOBBSSUU__VV55..22

OOXXCCVV__VV33..11

CCCCVVMMIISS

GGIIDD__VV00..33

665533CC

332233CC 663333CC

660033CC

880033CC

662233CC

554433CC

113333CC772233CC

333333CC

223333CC003333CC

443333CC664433CC

110033CC

444433CC

001133CC

111133CC

884433CC552233CC

553333CC882233CC

774433CC992233CC

3

9

8

9

D9D

D8D

C9C

G3G

S

S

A

A

N

N

B

B

I

I

T

T

T

T

U

U

O

O

T

T

T

T

B

B

C

C

A

A

A

A

V

V

V

V

B

B

B

B

33AA

11NNII

11DD

22NNII

44BB

33NNII

55CC

44NNII

66DD

55NNII

77DD

66NNII

88BB

77NNII

44JJ

88NNII

88HH

99NNII

55HH

0011NNII

99HH

1111NNII

44HH

11AANNII

44GG

22AANNII

55GG

11BBNNII

66GG

22BBNNII

11HH

11VVLLNNII

11EE

22VVLLNNII

99BB

11OODDLLAA

77BB

22OODDLLAA

55EE

11OODDLLXXUUAA

55FF

22OODDLLXXUUAA

66EE

33OODDLLXXUUAA

66FF

44OODDLLXXUUAA

77EE

55OODDLLXXUUAA

22HH

11OODDLLVVLL

22EE

22OODDLLVVLL

66AA

11OODDLLCCHH

55AA

22OODDLLCCHH

55BB

11OODDLLSSMM

66BB

22OODDLLSSMM

88AA

11OODDLLFFRR

77AA

LFFRR

22OODDL

44FF

OODDLLCCLL

33BB

OODDLLMMIISS

44AA

OODDLLOOII

D

D

D

D

N

N

N

N

G

G

G

G

D

D

A

A

8

7

9

F8F

F7F

F9F

11FF

NNIIXX

11GG

TTUUOOXX

330033CC

66HH

NN11CC

77JJ

PP11CC

33CC

11BBFF

22CC

22BBFF

22AA

000033LL

11XXLL

11CC

110033LL

22XXLL

77GG

NNNNIIXXRR

77HH

PPNNIIXXRR

33JJ

LLPPHH

22JJ

RRPPHH

99GG

NNTTUUOO

88JJ

PPTTUUOO

99EE

AANNIIGGHHCC

88EE

BBNNIIGGHHCC

440033UU

44DD

11CCPP

44EE

000033PPTT

22CCPP

33DD

ZZHHKK2233

88CC

991133CC

LLVV
SSAAIIBBVV
LLCCSS
AADDSS
BBQQRRII
PPBBFFEERR
BBTTEESSEERR
BBRRWWPPFFHH
BBNNOORRWWPP
11TTSSEETT
22TTSSEETT

CCNN
CCNN
CCNN
CCNN
CCNN
CCNN

3

3

1

1

4

4

2

2

D

D

D

D

D

D

D

D

D

D

N

N

N

N

N

N

N

N

S

S
N

N

G

G

S

S

G

G

G

G

G

G

G

G

V

V

P

P

P

P

P

P

P

P

8

1

2

6

5
J5J

J6J

B1B

G8G

B2B

002233CC

33HH
66C

C

77CC
44CC

220033PPTT

55DD

112233CC

33EE
22DD
33FF
22FF
22GG

11AA
99AA
11JJ

99JJ
11
22

994433CC

000033CCSSOO

LL__KKCCAAJJRRA

AEE

RR__KKCCAAJJRRAAEE

NN__KKPPSS
PP__KK

PPSS

CCPP

QQEERR__KKLLCC__TTBB

KK2233KKLLCC

LLCCSS
AADDSS

QQRRII__UUMMPP

TTEESSEERR__BBBB

TTEEDD__CCCCAA

YYEEKKNNOOPP

222233CC

110033RR

220033CC

440033CC

331133CC

881133CC

PPUUKKCCAABB

440033TTAABB

EERROOCCVV__VV22..11

MMEEMM__VV88..11

441133CC

FFII__VV55__SSUUBBVV

C
5
0
6

C
3
0
1

L410
C331
C318

C344

C349

C
3
2
9

C323

C336

L

4
0
9

C
3
2
6

C
3
2
7

C
3
4
5

C
3
1
9

C
3
0
3

C305

C
3
4
6

C
3
3
3

C
3
5
6

R
3
1
8

C306

C
3
1
1

C
3
3
4

C
3
2
1

C
3
3
0

C
3
5
8

C357

C
3
1
0

4

U301

C
3
2
0

3

0

C
3
2
8

C
3
3
2

2

2

2

P

C308
C236
C235

T
P
3

C347

C325

0
0

O
S

C
3
0
0

U

C302

L

3
0
1

L

3
0
0

2

T

0
3
P
T

C335

C313
C314

C348

C322

C
2
2
7

9-6

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

9-4.

Sim Part

Phone can't access SIM Card

Yes

Check the SIMVCC

Check the SIM connector's

connector's to SIM card

=3.0V

Yes

①

No

Check the circuit related to R311, C340

②

No

resolder or change SIM300

Yes

Check the circuit around SIM300

input circuitry

Yes

END

③

No

Check the related circuit of SIM300

9-7

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

CCCCVVMMIISS

661133RR

111133RR

OOIIMMIISS

000033MMIISS

TTSSRRMMIISS
KKLLCCMMIISS

115533CC883333CC

993333CC

771133RR

004433CC

005533CC

1111
2222
3333

55

55

44

44

GGGG

GGGG

77

8899

0011

66

66

RROOTTCCEENNNNOOCC MMIISS

2
0
1
T

L125

N
A

SIM300

0
0
1
C
S

0

2

P

2

T

BB_RESET

TCK

GND

TRSTB

TDITDO TMS

3.0V_DIG

RTCK

R220R221R222

C339

R317

C338

C504

C340
C350
R311

R316

C351

9-8

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

9-5.

Microphone Part

Microphone does not work

Check the connection

from MIC

Check the circuit

from UCP20

Yes

Yes

0 to

Yes

MIC

No

No

Resolder MIC

Check the path from Main IC to MIC.

MIC401 for Loud call mode,

(

HEA400 for Headset call mode.

MIC400

for every other cases.)

Check the MIC

Yes

END

No

Replace the MIC

9-9

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This Document can not be used without Samsung's authorization