Samsung E1172 Troubleshooting

Level

8.

Block Diagram

8-1.

Repair

3

8-1

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PCB Diagrams

8-2.

8-2-1.

Top

Level3Repair

8-2

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8-2-1.

Bottom

8-3

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Flow Chart of Troubleshooting

8-3.

presetting methods for checking TP



GND&TP(exp. Vbatt=C108, C109, C212, C308)using Oscilloscope

­look over the coming out signal.

-

Level3Repair

GND

Oscilloscope



TP(Test Point)

8-4

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Level3Repair

Multi-meter



EX) to look up the TP, shunt Cap.

-

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Checking the TP(test point) using Multi-meter



if checking the GND, you can listen"beep"

­if checking the Signal, you can't listen it.

8-5

Level3Repair

8-3-1.

Power On

Power On'does not work

'

Check the Battery Voltage

TP:C108, C109, C212, C308)

(

Yes

is more than

PMU_VIO

TP:C207, C315)

(

Check the Clock at

UCP200 L16pin
CLK32K)

(

TP:R103)

(

Yes

=2.8

Yes

=32

3.7V

V?

KHZ

No

No

No

Change the Battery

Because of batt. power low)

(

Check the Main Chip related to

GPIO_2.8V(TP:C207, C315)

V

to lookover the Chip damage)

(

Check the Main Chip

to lookover the Chip damage)

(

R103/look over the waverform

(TP:

using the oscilloscope)

VCORE

+

=1.25

TP:C204, C21

(

END

Yes

_1.25V

V?

,

0

Yes

L201)

No

Resolder C204, C214 and L201

to confirm coming out power V_core)

(

8-6

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8-7

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8-8

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8-3-2.

Initial

Initial Failure

Yes

UCP200 pin T4(RSTON)

="H(>2.4V)"?

TP106)

using the oscilloscope GND&TP

(TP:

Yes

CP200pin M4 or D12=

U

"H(>2.4V)"?

TP:TP100, LCD PIN5)

(

No

No

Replace UCP200, must be"H"

usingaHeatgun

Change PBA to check TP100&LCD PIN5

Yes

Check the16bit data signal

memory CE(TP:TP200)

&

Yes

END

8-9

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8-10

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8-3-3.

Charging Part

UCP200 pin V10(VCHG_P)

UCP200 pin V9(AUX_DET

Abnormal charging part

Yes

>4.9V

TP:C223)

(

Yes

or R303

"L=2.8V"?

Yes

No

be possible that it's not soldering well)

(

)

No

Resolder R206, C223

Resolder or Replace R303

Must be"L=2.8V"

Check the UCP200 pin R9

1.4V



Yes

END

No

Replace UCP200 usingaHeatgun

8-11

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8-12

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8-3-4.

Sim Part

Phone can't access SIM Card

Yes

SIM

or R210

After Power ON,

Check SIM_CLK_1 Signal on

pin3 of SIM

method:wiring pin3and

(

checking its waveform using an

pin

200

"H=3.0V" ?

Yes

200ina

oscilloscope)

1

few second

No

No

Resolder R210, C230

insert SIM card&access it,

then must be sim pin1 or R210"H=3.0V"

Resolder or Replace SIM200 connector.

Because of not soldering well)

(

Yes

After SIM card insert,

SIM

method:wiring pin2and check

(

pin2(SIM_RST_1)

200

"H=3.0V"?

its waveform using an

oscilloscope) oscilloscope)

Yes

=

No

Confirm an another PBA(U200)

8-13

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Level3Repair

SIM

or R212

After Power ON,

Check SIM_CLK_2 Signal on

pin3 of SIM

method:wiring pin3and

(

checking its waveform using an

method:wiring pin2and check

(

oscilloscope)

After SIM card insert,

SIM

201

its waveform using an

oscilloscope) oscilloscope)

pin

20

201ina

pin2(SIM_RST_2)

"H=3.0V"?

1

1

"H=3.0V" ?

Yes

few second

Yes

No

then must be sim pin1 or R212"H=3.0V"

No

=

No

Resolder or Replace SIM201 connector.

Resolder R212, C231

insert SIM card&access it,

Because of not soldering well)

(

Confirm an another PBA(U200)

Yes

Check the SIM Card

look over if it get damaged.)

(

Yes

END

8-14

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8-15

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8-3-5.

Microphone Part

Microphone does not work

UCP200 pin U18="H=2.85V"

at Mic Active

TP:C226)

(

Check the MIC Connection
look over schematics about

(

schemetics.)

Yes

Yes

Yes

?

No

No

Replace UCP200 usingaHeatgun

Because of not soldering well

(

Resolder C317, C326, L309, R313, C321, R312,

R314, C319, C323

not work if those is not connected.)

(

)

Check the MIC sample.

it be possible the problem

(

things)

Yes

END

No

Replace an another MIC

because of being possible the problem)

(

8-16

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8-17

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8-3-6.

Speaker Part

(

checking an waveform using

Does not work Voice call

Speaker does not work

Yes

UCP200 pin W18, W19

>3.7V

Wiring the SPK N/P and

oscilloscope)

Yes

Yes

No

(

No

?

Resolder C227 AND R209

be possible because of soldering not well)

Replace UCP200 usingaHeatgun

be possible of being UCPabad sample)

(

Does not work Ringtone?

Menu->settings->profiles

(

options->Edit->

->

select the Call ringtone)

Yes

Is Speaker working?

Listening through the

(

speaker)

Yes

END

No

No

Resolder or Replace UCP200, SPK300

be possible of soldering not well or being

(

UCPabad sample)

Change Speaker ASS'Y

be possible of SPK Problems

(

or not inserting it right.)

8-18

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Level3Repair

P_KPS

N_KPS

213C

703L

803L

313C

103D

003KPS

203D

8-19

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Level3Repair

8-3-7.

Key Data Input

Check Initial Operation

When you pushed all of the

Key, does the key have

Yes

tension?

Yes

No

(#1 :

whether be sunken

look over the Dome location

#2 :

whether be out of line)

Change Domesheet

look over the Dome situation

All of the key doesn't work

except POWER ON KEY

Yes

END

No

?

because of be possible for PBA to get damaged)

Replace the PBA

over the insturctions again

(

and change the board

8-20

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Level3Repair

V3.3_DEL_YEK

113R

0584XNP ybraeN

413C

103DEL

303DEL

203DEL

403DEL

DEL YEK

)0(OIYEK

)1(OIYEK

)2(NIYEK

)1(NIYEK

)0(NIYEK

UOYEK

)0(T

)1(TUOYEK

)2(TUOYEK

)3(TUOYEK

)2(OIYEK

003TIGID

12

303TIGID

12

603TIGID

12

RATS

12

DNES

103TIGID

12

403TIGID

12

703TIGID

1

2

903TIGID

12

203TIGID

12

503TIGID

12

803TIGID

12

PRAHS

12

003TFOS

12

103TFOS

12

TFEL

1212

NWOD

12

TNI

2

1

PU

12

THGIR

12

1

203DZ

2

PAM YEK

6

5

4

3

8-21

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Level3Repair

8-3-8.

Back Light(for Color Main LCD)

Backlight does not work

Yes

Is LCD Contrast set on high

level in the Menu?

menu->settings->display->light

(

Wiring pin

(

LCD contrast)

->

Is U101 pin

Yes

H>2.7V"

1="

LCD_BL_EN)

#1/

?

No

No

Set LCD Contrast on high level

menu->settings->display->light

(

LCD contrast/select5Level(level

->

Resolder U101

#1 :

with an soldering iron)

(

Repalce LCD Module

#2 :

to check if it has the problem)

(

:1~5)

END

Yes

8-22

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Level3Repair

3

0

C

0

D

H

TABV

101U

NE_LB_DCL

2

DNG

A_DEL

701R

901C

801R

1K_DEL

2K_DEL

8-23

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Level3Repair

8-3-9.

Key Back Light

Main Key LED does not work

UCP200 pin T8, V8

Wiring POWER ONKEY_1,

(

look over using an

Key LED does not work?

look over the LED light)

(

Yes

H=3.0V

"

"?

GND

&

Oscillocope)

Yes

=

2

No

No

Replace UCP200 usingaHeatgun
must be coming out the signal"H")

(

Replace the LED

be possible that the sample has the problem)

(

#1 :

#2 :

Change PBA

END

Yes

8-24

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8-25

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presetting



Tx setting)

(

After setting



8960

8960 (

EGSM/DCS

Rx setting)

(

Active Cell

1.
select GSM or GPRS

:

Connetion Type

2.
select Auto(GSM), BLER(GPRS)

:

BCH Parameter

3.
select measuring band(DCS or EGSM)

:

Cell power

4.

dBm

:-60

)

After setting, prepare the call setup Display

1.
Using an Originate Call, makeacall.

2.
Confirm the display"connected"

3.
start the measuring

4.

8-26

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Level3Repair



8960 &

spectrum analyzer

down&up at picture)

(

spectrum analyzer:testing method=the way using an Osciliscope

-

-8960:

connect using RF Cable between

8960 &

RF Connector in board.

RF Connector

8-27

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Level3Repair

8-3-10.

GSM

Cell Power

PAM100

(

spectrum analyzer)

PAM100 Pin17

(

pin
TP:C116,C117 using

(

spectrum analyzer)

Receiver

900

RX ON

:-60

Yes

Pin

15

dBm

-65

TP:L111 using

Yes

dBm

-68

TP:L107 using

Yes

F10

0

7,6-70

dBm





dBm

No

No

No

 

Check PAM100 pin

Resolder F100

(L=0.4

V)

8

No

Yes

Check ANT Switch

control circuit

Resolder PAM100

Yes

Check&Resolder

C200, C201, C203, C204, L200,

And PMU Part and UCP20

Yes

END

0

8-28

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Level3Repair

8-3-11.

DCS Receiver

RX ON

Cell Power

PAM100

(

spectrum analyzer)

PAM100 Pin18

TP:C114 using

(

specturm analyzer)

pin
TP:C113,C115 using

(

spectrum analyzer)

:-60

Yes

Pin

15

dBm

-65

TP:L111 using

Yes

dBm

-68

Yes

F10

0

8,9-70

dBm





dBm

No

No

No

 

Check PAM100

pin

pin10(H=2.4V)

Resolder F100

8(L=0.4

V)

No

Yes

Check ANT Switch

control circuit

Resolder PAM100

Yes

Check&Resolder

C200, C201, C203, C204, L200,

And PMU Part and UCP20

Yes

END

0

8-29

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Level3Repair

001SFR

A21C3GG

4

011L

001L

111L

101L

601C

201L

811C

301L

001TNA

101TNA

XRMSGE
XRSCD

TABV

801C

L
E

A

S

L

_

P

E

_

D

S

N

_

N

X

O

A

R

P

B

PMAR

4

3

1

0

2

1

2

2

9

2

1

2

8

1

7

1

0

D

D
N
G

41

DNG

51

TNA

02

DNG

61

CN

D

D

N

T

P

L

L

T

E

N

N

N

M

R

R

_

A

G

G

G

A

T

T

X

B

R

T

C

C

V

V

P

P

G

G

0

0

1
M
A
P

D

D

D

D

D

0

1

N

N

N

N

N

C

X

X

C

N

R

G

G

G

G

G

R

N

3

5

1

6

2

8

9

7

3

1

1

1

1

1

501L

4

BL_NIFR

2

BH_NIFR

111C

011C

XT_MSGE

XT_SCD

211C

411C

XRSCD

1

701L

XRMSGE

4

001F

9

1NI

2NI

1TUO

8

1TUO

7

2TUO

6

2TUO

G

G

G

G

0

2

3

5

1

311C

601L

511C

611C

801L

711C

P_XRSCD

N_XRSCD

P_XRMSGE

N_XRMSGE

8-30

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Level3Repair

8-31

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Level3Repair

8-3-12.

GSM

TX ON(5Level)

PAM100

TP:L111 using

(

spectrum analyzer)

PAM100 pin4

TP:C111 using

(

spectrum analyzer)

900

30

dBm

Yes

Pin

dBm

No

Transmitter

15



-4



yes

Yes

   

CheckPAM

pin
Pin10(H=2.4V)

8(H=2.4

100

V)

No

Check ANT Switch

Yes

Change or Resolder

control circuit

PAM100

No

PAM100 pin2

dBm

-4



TP:C112 using

(

spectrum analyzer

No

Check&Resolder

C200, C201, C203, C204, L200,

And PMU Part and UCP20

Yes

END

0

Yes

Yes

Check PAM100

VBATT(pin11=3.7V)

TP:C108) OK?

(

Resolder or Change

L105, C110, C111

8-32

No

Yes

Change the UCP200

ifadamaged chip.

Check VBAT

using the osciliscope

TP:C108)

(

or PAM control signal

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Level3Repair

8-3-13.

DCS Transmitter

TX ON(5Level)

Yes

PAM100

spectrum analyzer)

PAM100 pin

(

spectrum analyzer)

Pin

15

dBm

30

TP:L111 using

(

No

2-4

dBm

TP:C112 using



yes

Yes

   

CheckPAM

pin
Pin5(H=2.4V)

4(H=2.4

100
V)

No

Check ANT Switch

Yes

Change or Resolder

control circuit

PAM100

No

PAM100 pin



TP:C112 using

(

spectrum analyzer

Check&Resolder

C200, C201, C203, C204, L200,

And PMU Part and UCP20

dBm

-4

END

1

No

0

Yes

Yes

Yes

Check PAM100

VBATT(pin11=3.7V)

TP:C108) OK?

(

Resolder or Change

C112

8-33

No

Yes

Change the UCP200

ifadamaged chip.

Check VBAT

using the osciliscope

TP:C108)

(

or PAM control signal

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Level3Repair

RFS100

A

1C3GG4

2

L110

L100

L111

DCSRX

EGSMRX

R109

C106

C118

L102 L103

C114

ANT100

ANT101

EGSMRX

DCSRX

F100

1

IN1

L107

4

IN2

G

G

2

3

VBAT

C108

9

OUT1

8

OUT1

7

OUT2

6

OUT2

G

G

5

0
1

L
E

A

S

L

_

P

E

_

D

S

N

_

N

X

A

O

B

P

R

RAMP

1

0

2
2

D
N
G

14

GND

15

ANT

20

GND

16

NC

3

1

4

1

1

7

8

9

2

2

2

1

0

D

D

D

T

P

N

L

L

T

E

N

N

N

M

R

R

_

A

G

G

G

A

T

T

X

B

R

T

C

C

V

V

P

P

G

G

RFIN_LB

0
0
1
M
A
P

RFIN_HB

D

D

D

D

D

1

0

N

N

N

N

N

C

C

X

X

N

G

G

G

R

G

G

N

R

6

5

3

1

2

3

7

9

8

1

1

1

1

1

C113

L105

4

2

C111

C110

EGSM_TX

DCS_TX

C112

DCSRX_P

L106

C115

C116

DCSRX_N

EGSMRX_P

L108

C117

EGSMRX_N

8-34

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8-35

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8-3-14.

Torch Light

Torch Light LED does not work

Yes

Check LED300.C306,R302

Is it broken or damaged?

No

Check U300

pin

1



Yes

Check U300

pin

1



Yes

Resolder or Replace LED300.C306,R302

No

Change PBA

No

Change U300

END

Yes

8-36

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Level3Repair

TORCH_EN

C305

VBAT

U300

41

VIN

VOUT

3

EN GND

D
N
G

5

5
0
0
1

2

R302

C306

D300

LED300

8-37

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Service Schematics

8-4.

NC Point(Top View)

-

NC

:

UCP200

1 2 3 4 5 6 7 8 9 10111213141516171819
A
B

C
D
E

F

G
H

J

K

L

M

N
P
R

T

U
V

W

1 2 3 4 5 6 7 8 9 10111213141516171819

Level3Repair

A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
W

8-38

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Level3Repair

NC

:

UME200

12345678910

A
B
C
D
E

F

12345678910

A
B
C
D
E
F

8-39

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