Samsung C3520 Block Diagram 7

Level

8.

Block Diagram

8-1.

Repair

3

8-1

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

PCB Diagrams

8-2.

8-2-1.

Top

8-2

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

8-2-2.

Bottom

8-3

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

LOGIC

8-3.
8-3-1.

Power On

Power switch on

NG

Check the VBAT Voltage

C219 or C214

>=3.3V

Yes

Check the current

onsumption

>= 100

mA?

Yes

Check the clock at

OSC200

=32

KHz?

Yes

L200(VDD_GSM_CORE_1V2)=

L201(VDD_IO_LOW_1V8)=

1.2

1.8

V?
V?

NO

c

NO

Charge the Battery.

1.
V,put more lead C219,C214

2.If0

Download

NO

Resolder OSC200

NO

Change the UCP200

Yes

Check the clock

DCX100

=26

Mhz

?

Yes

Check the initial operation

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

NO

Check the clock generation circuit

8-4

Level3Repair

8-5

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

8-6

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

8-3-2.

LCD Working

Power Switch On

LCD Display

On?

Yes

NO

LCD FPCB

connector is co

rrectly connecti

ned?

Yes

F300,F301

F302

Correctly mou

nted?

correctly connect

NO

F300,F301,F302

Resolder

NO

Yes

LCD

Replace

Yes

C317

LED_P_16V=16V?

NO

Replace Q301&Check

neighboring circuits

8-7

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

R312 R314

C
3
3
8

R
3
0
9

C352
R306
R216

R217
C355
R336

1

0

Q

D300

3

0

0

C330

C
3
4
6

R308

6
0
3

C333

U

3

C317

C351

Q

C
3
3
5

C316
C312

L306

C
3
1
5

L316
C334

C313

L311

C336

2
0
3

F

L305
C371

0
0
3
C

D
H

C366
C307

TP304

1
0
3

F

TP300

TP303

0

TP301

0
3

F

TP302

TP307

8-8

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

8-3-3.

Speaker Working

Operate speaker

NG

Check

Speaker

Contact

YES

Speaker break

down?

NO

NO

ReContact

YES

Change Speaker

Check L313,L31

C318,C323,

4,
ZD310,ZD324

YES

Change main PBA

NO

Replace

the components

8-9

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

P_TUOKPS

N_TUOKPS

013DZ

G5TS3.3B9DSE

813C

FP033

V05

500

1

733R
mho0

5001

TROHS

833R
mho0

500

1

TROHS

323C

FP033

V05

5001

023C

NEPO

5001

913C

NEPO

5001

Hn86

313L

5001

Hn86413L

5001

4

23C

NEPO

5001

2

2

1

1

2

2

1

1

003TNA

103TNA

ANT301

L31 3 L314

42

3DZ

G5TS3.3B9DSE

C323

C318
R337R338

C320

C324

C319

ZD310ZD324

ANT300

8-10

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

8-3-4.

Receiver Working

Operate Receiver

NG

Check

Receiver

FPCB

YES

Receiver break

down?

NO

Change main PBA

NO

Correctly connect

YES

Change Receiver

8-11

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Level3Repair

8-3-5.

MainMICWorking

Operate MIC

NG

Pollute

MIC Hole?

NO

MIC FPCB

Soldering?

YES

NO

Clean up
MIC hole

MIC FPCB

Resoldering

YES

MIC Break

Down?

YES

Check

MIC500,L312,

L315,C372,ZD

U304

307,

NO

Change main PBA

NO

Change MIC

YES

Replace

the components

8-12

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization