Samsung E770 Service Manual

GSM TELEPHONE

SGH-E770

GSM TELEPHONE

CONTENTS

1. Specification

2. Flow Chart of Troubleshooting

3. Exploded View and Parts List

4. MAIN Electrical Parts List

5. PCB Diagrams

6. Block Diagrams

1. SGH-E770 Specification

1-1. GSM General Specification

GSM 900

Freq. Band[MHz]

Uplink/Downlink

ARFCN range

Tx/Rx spacing 45MHz 95MHz 80MHz

Mod. Bit

rate/

Bit Period

Time Slot

Period/Frame Period

Modulation

MS Power

GPRS

EDGE

GPRS 0.3GMSK 0.3GMSK 0.3GMSK

EDGE 8PSK 8PSK 8PSK

GPRS 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm

EDGE 27~5dBm 26~0dBm 26~0dBm

880~915 925~960

0~124

&975~1023

270.833Kbps

3.692us

812.5Kbps

3.692us

576.9us

4.615ms

DCS1800 PCS1900

1710~1785 1805~1880

512~885 512~810

270.833Kbps

3.692us

812.5Kbps

3.692us

576.9us

4.615ms

1850~1910 1930~1990

270.833Kbps

3.692us

812.5Kbps

3.692us

576.9us

4.615ms

Power

Level

Sensitivity -102dBm -100dBm -102dBm

TDMA Mux 8 8 8

Cell Radius 35Km 2Km 2Km

GPRS 5pcl~19pcl 0pcl~15pcl 0pcl~15pcl

EDGE 8~19(c l a s s E2) 2~15(class E2) 2~15(class E2)

1-1

SGH-E770 Specification

1-2. GMSK TX power Level

TX Power

control

level

5 33±2dBm

6 31±3dBm

7 29±3dBm

8 27±3dBm

9 25±3dBm

10 23±3dBm

11 21±3dBm

12 19±3dBm

13 17±3dBm

14 15±3dBm

15 13±3dBm

GSM900

TX Power

control

level

0 30±2dBm

1 28±3dBm

2 26±3dBm

3 24±3dBm

4 22±3dBm

5 20±3dBm

6 18±3dBm

7 16±3dBm

8 14±3dBm

9 12±4dBm

10 10±4dBm

DCS1800

TX Power

control

level

030±2dBm

128±3dBm

226±3dBm

324±3dBm

422±3dBm

520±3dBm

618±3dBm

716±3dBm

814±3dBm

912±4dBm

10 10±4dBm

PCS1900

16 11±5dBm

17 9±5dBm

18 7±5dBm

19 5±5dBm

11 8±4dBm

12 6±4dBm

13 4±4dBm

14 2±5dBm

15 0±5dBm

1-2

11 8±4dBm

12 6±4dBm

13 4±4dBm

14 2±5dBm

15 0±5dBm

1-3. EDGE TX Power Level

SGH-E770 Specification

TX Power

control

level

8 27±3dBm

9 25±3dBm

10 23±3dBm

11 21±3dBm

12 19±3dBm

13 17±3dBm

14 15±3dBm

15 13±3dBm

16 11±5dBm

17 9±5dBm

18 7±5dBm

GSM850

TX Power

control

level

2 26±3dBm

3 24±3dBm

4 22±3dBm

5 20±3dBm

6 18±3dBm

7 16±3dBm

8 14±3dBm

9 12±4dBm

10 10±4dBm

11 8±4dBm

12 6±4dBm

DCS1800

TX Power

control

level

2 26±3dBm

3 24±3dBm

4 22±3dBm

5 20±3dBm

6 18±3dBm

7 16±3dBm

8 14±3dBm

9 12±4dBm

10 10±4dBm

11 8±4dBm

12 6±4dBm

PCS1900

19 5±5dBm

13 4±4dBm

14 2±5dBm

15 0±5dBm

1-3

13 4±4dBm

14 2±5dBm

15 0±5dBm

2. SGH-E770 Flow Chart of Troubleshooting

2-1.Baseband

2-1-1. Power ON

'Power ON' Does not work

Check the current consumption

Current consumption

≥

100mA ?

YES

Check the V bat. voltage

Voltage≥3.3V ?

YES

Check the pins of UCP301

C311≥1.8V ?

YES

C314 and C315 = 2.8V?

NO

Down load again

Charge the Battery

Check UCP301 and C311

YES

Checktheclocksignal

at pin #3 of TCX101

Freq.=13MHz,Vrms≥300mV

YES

Check the Initial operation

END

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

C316=1.5V?

YES

2-1

NO

Check UCP301 and C316

Checktheclockgeneration

circuit (TCX101, U104 pin#4)

SGH-E770 Flow Chart of Troubleshooting

D

D S

S P

P _

_

A

A B

B (

(

0

:

F

L

A

A S

S

D

H

S

P

E

A

R

S

R

S

R

R C

C L

L

K

C

C 3

3

CFA

2

CPAV

PIXTR

PIXTR NIXTR

NIXTR PQXTR

PQXTR NQXTR

NQXTR PATUOA

PATUOA NATUOA

NATUOA PBTUOA

PBTUOA NBTUOA

NBTUOA PNICIM

PNICIM NNICIM

NNICIM PTUOCIM

PTUOCIM NTUOCIM

NTUOCIM PNIXUA

PNIXUA NNIXUA

NNIXUA PTUOXUA

PTUOXUA NTUOXUA

C

C 3

3

2

3

NTUOXUA

K23KLC

K23KLC QANEOX

QANEOX CM_M31KLC

CM_M31KLC

TNI_PSD

NO_GIJ

NO_GIJ NO_RWP

NO_RWP

FUB_1WSP

V

V B

B A

A T

T

R

P

I

N

W

S

T

R

_

Q

K

K E

E E

E P

P

9D

CFA

7E

PXT

5B

5B 6B

6B 7D

7D

PIXTXR

6D

NIXTXR

7C

7C 6C

6C

11P

11P 21N

21N 21R

21R 21P

21P 41N

41N

PNICIM

41M

NNICIM

51N

51N 51P

51P 51M

51M

PNIXUA

41L

NNIXUA

31K

31K 31L

31L 31R

31R

MCVXV

31M

GER

P

V

P

V

41R

NGERV

4R

KCIAD

R

R 3

3

2

5

KCIAD

4P

NRIAD

6L

IDIAD

6M

ODIAD

4N

4N 1D

1D 6R

6R

CM

5P

5P 3P

3P

RTNID

41C

41C 51C

51C 7L

7L 9K

9K 01N

01N

EDOM

9M

9M 01L

01L

QRTNI

9L

C

C 3

3

1

9

R

R 3

3

1

9

R

R T

T C

C A

A L

L

A

A R

R M

M

C

C 3

3

2

0

0 R

R 3

3

2

1

C

C 3

3

1

8

S

R

C

E

X

D

R

_

E

A

L

N

E

N

T

G

B

C

A

C

A

B

3

2

1

6

2

S

S E

E R

R C

C K

K

2FERAR

2FERAR 1FERAR

1FERAR

PQXTXR

PQXTXR NQXTXR

NQXTXR

PATUOA

PATUOA NATUOA

NATUOA PBTUOA

PBTUOA NBTUOA

NBTUOA

PTUOCIM

PTUOCIM NTUOCIM

NTUOCIM

PTUOXUA

PTUOXUA NTUOXUA

NTUOXUA

KLC_CTR

QANEOX

2WS_RWP

O_TESER

R

R T

T

C

C _

_

A

A L

L

M

M N

N

H

H 1

1

0

6

1

O

S

O

S

E

C

R

T

D

L

E

5

6

7

A

1

2

4XUA_CDA

N1WS_RWP

FUB_1WSP

PEEK_RWP

A

D

NE_GNR_BIV

C

H

_

A

C

V

_

I

U

S

R

E

X

E

N

2

1

S

F

E

F

D

A

D

E

1

9

1

2

0

4

5

I

C

C H

H R

R

G

3

1

5

R

R 3

3

1

4

B

B P

P _

_

V

V F

F

R

R 3

3

T

1

H

7

3

0

S

_

D

P

R

T

_

S

E

X

R

P

S

_

W

_

E

E N

N

A

A 4

4 O

O C

C T

T

L

4

C

C H

H _

_

B

B D

D R

R V

V

E

E 1

1

V

V C

C C

C B

B _

_

2

.

9

V

I

O

T

N

D

S

P

_

A

B

(

0

1

2

3

4

5

6

7

)

M

C

R

E

F

L

2

5

3

6

O

R

W

E

C

S

T

N

E

L

3

2

1

0

T

N

N _

_

C

C S

S P

P

S

C

S

D

S

L

D

K

O

N

I

_

V

_

V

P

B

E

S

A

X

C

T

K

E

N

L

E

N

L

M

8

1

7

3

4

U

P

_

S

C

D

C

S

I

O

L

K

V

V C

C C

C B

B _

_

2

.

9

V

C

C 3

3

1

3

3 C

C 3

3

1

4

4 C

C 3

3

1

5

5 C

C 3

3

1

6

6 C

C

3

1

7

M

N

K

P

L

5

6

3

3 I

I

A

|

O

B

B 0

0

V

V A

A C

C C

C F

F

1

4

V

V B

B A

A T

T

7

2

1

2

A

B

2

3

1

6

7

4

5

U

U C

C P

P 3

3

0

1

V

L

D

4

S

O

_

B

A

5

4

3

2

1

B

A

B

A

J

G

1

2

0

1

3

2

1

D

G

C

S

M

_

T

X

_

E

N

C

C 3

3

1

C

C 3

3

1

2

12

B

B A

A T

T

3

0

:

8

)

D

D S

S P

P _

_

D

A

A B

B

S

(

P

8

_

)

D

D B

B (

(

0

)

K

1

5

D

A

A B

B

8

0

V

L

5

S

_

A

B

D

C

1

9

0

C

C 3

3

1

0

R

R 3

3

1

2

D

S

P

_

D

B

(

1

4

2

3

)

K

J

2

3

6

5

5 D

D

B

3

4

1

2

R

R I

I

V

N

V

I

G

B

L

_

D

O

R

_

V

6

7

C

A

F

1

5

3

4

2

R

R 3

3

1

D

D S

S P

P _

_

D

D B

B (

(

5

)

H

H 5

5 D

D B

B 5

5

L

E

E D

D 1

1

_

D

D R

R V

V

G

G 1

1

3

K

K E

E Y

Y _

_

B

B L

L

1

V

V C

C C

C D

D _

_

1

.

8

V

V _

_

P

P S

S C

C V

V C

C C

C A

A _

_

2

.

9

V

V V

V P

P A

A C

C _

_

2

.

8

V

V V

V R

R F

F

_

2

.

9

V

V V

V C

C C

C D

D _

_

2

.

9

V

V V

V L

L

D

D O

O 1

1

_

1

.

5

V

D

D S

S P

P _

_

D

D B

B (

(

6

)

G

G 3

3 D

D B

B 6

6

L

E

E D

D 2

2

_

D

D R

R V

V

G

G 1

1

2

V

V C

C C

C B

B _

_

2

.

9

V

D

S

S P

P _

_

D

D B

B (

(

7

)

G

G 4

4 D

D B

B 7

7

V

V R

R T

T

C

H

H 1

1

D

S

P

_

D

B

(

9

8

1

)

0

1

2

3

4

)

D

E

F

3

2

3

2

3

4

1

D

B

1

9

8

0

1

4

2

3

S

U

I

M

S

M

P

U

I

_

M

V

P

C

R

S

_

L

S

I

M

K

O

T

R

K

J

P

K

1

2

0

4

1

0

S

V

V S

S I

I

M

S

I

M

R

_

D

_

C

_

C

I

R

S

A

L

O

L

K

S

T

K

T

A

V

V R

R T

T

C

C _

_

1

.

5

V

D S

S P

P _

_

D

D B

B (

(

0

:

1

5

)

E

E A

A R

D

D S

S P

P _

_

D

D B

B (

(

1

5

)

D

2

2 D

D B

B 1

1

5

U

U P

P

V

_

D

C

D

L

1

K

2

J

N

J

N

1

9

3

R _

_

C

C H

H E

E C

C K

K

2

6CN

1

5CN

01K

71SDNG

01J

61SDNG

9J

51SDNG

8J

41SDNG

7J

31SDNG

9H

21SDNG

8H

11SDNG

7H

01SDNG

6H

9SDNG

01G

8SDNG

9G

7SDNG

8G

6SDNG

7G

5SDNG

01F

4SDNG

9F

3SDNG

8F

2SDNG

7F

1SDNG

31D

3CDA_XUA

4B

LTCO_DNG

4C

LTCO_DDV

31P

NG

VD

11L

VDDV

6F

DNG

B

6A

BDDV

01M

DDNG

11N

DDDV

6P

4SSV

2R

3SSV

4K

2SSV

5G

1SSV

4J

2OI_DDV

5N

1OI_DDV

6N

3DDV

3M

2DDV

3J

1DDV

11F

RUCH_DNG

51K

2CSP_DNG

51B

1CSP_DNG

8E

QDNG

31B

76DDV

01C

5DDV

V

D

3

4

C

C 1

1

C

C 3

3

0

9

C

V

3

R

0

F

0

_

2

.

9

V

V V

V C

C C

C A

A

C

_

3

2

0

.

1

9

V

V V

V C

C

C 3

3

C

0

D

2

_

1

.

8

V

V V

V C

C C

C D

D _

_

2

C

.

9

3

V

0

3

V

V B

B A

A T

T

2-2

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-E770 Flow Chart of Troubleshooting

2-3

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

2-1-2. Initial

The voltage at the C311=1.8V?

The voltage at the C311=1.8V? The voltage at the C315=2.8V?

The voltage at the C315=2.8V?

ThevoltageattheVR200

Initial Failure

YES

" Low --> High" ?

SGH-E770 Flow Chart of Troubleshooting

Check the UCP301

NO

Check the UCP301

(If it has some problem,

it has to be replaced.)

Check the UCP301

(If it has some problem,

it has to be replaced.)

YES

There is 32.768KHz wave

There is 32.768KHz wave form at the C214, C215 ?

form at the C214, C215 ?

YES

The voltage is 2.8V

The voltage is 2.8V at the C312,C314,C315 ?

at the C312,C314,C315 ?

YES

LCD Display OK ?

YES

Sound operation OK ?

YES

NO

Check the UCP201

Check the UCP301

Check the LCD part

Check the Audio part

END

2-4

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-E770 Flow Chart of Troubleshooting

D(0:15)

CP_WEN

CP_OEN

T_FLASH_ON

FLASH_RESET

ROM1_CS

ONENAND_CS

RAM_CS

LCDC_CS

YMU_CS

LOWER_BYTE

UPPER_BYTE

A(0:24)

D(0)

D(0) D(1)

D(1) D(2)

D(2) D(3)

D(3) D(4)

D(4) D(5)

D(5) D(6)

D(6) D(7)

D(7) D(8)

D(8) D(9)

D(9) D(10)

D(10) D(11)

D(11) D(12)

D(12) D(13)

D(13) D(14)

D(14) D(15)

D(15)

A(0)

A(0) A(1)

A(1) A(2)

A(2) A(3)

A(3) A(4)

A(4) A(5)

A(5) A(6)

A(6) A(7)

A(7) A(8)

A(8) A(9)

A(9) A(10)

A(10) A(11)

A(11) A(12)

A(12) A(13)

A(13) A(14)

A(14) A(15)

A(15) A(16)

A(16) A(17)

A(17) A(18)

A(18) A(19)

A(19) A(20)

A(20) A(21)

A(21) A(22)

A(22) A(23)

A(23) A(24)

A(24)

SIMCLK

SIMDATA

SIMRST

USB_SUSP

USB_DET

USB_DET VMOT_EN

VMOT_EN USB_VPO

USB_VPO USB_VMO

USB_VMO USB_OEN

USB_OEN

USB_DATA

UP_SCLK

UP_SDO

UP_SDI

UP_CS

INVERT

VBT_EN

BT_RTS

BT_RTS BT_TXD

BT_TXD

BT_RXD

BT_CTS

MLCD_DIM

VIB_EN

OLED_EN

SDS_TXD

SDS_TXD SDS_RXD

SDS_RXD

KEY_COL(0:4)

PSW1_BUF

KEY_ROW(0:5)

1

2

1

2

C

N

B7

A_A0

C8

A_A1

D8

A_A2

A6

A_A3

C6

A_A4

C5

A_A5

D7

A_A6

E7

A_A7

C4

A_A8

C2

A_A9

A3

A_A10

B3

A_A11

B1

A_A12

D6

A_A13

D5

A_A14

D3

A_A15

E8

A_A16

F8

A_A17

E6

A_A18

D2

A_A19

E4

A_A20

E3

A_A21

F5

A_A22

F4

A_A23

F3

A_A24

F2

PIO35_A_A25_BOOTSEL

A8

A_D0

E9

A_D1

F9

A_D2

G10

A_D3

G11

A_D4

F11

A_D5

E11

A_D6

G12

A_D7

D11

A_D8

E12

A_D9

C12

A_D10

A12

A_D11

F12

A_D12

D12

A_D13

E13

A_D14

D13

A_D15

D14

A_WEN

B14

A_OEN

E14

PIO30_WAITN

H14

FLASHRSTN

A14

A_CS0N

C15

A_CS1N

G14

A_CS2N

J14

A_CS3N

D15

A_CS4N

C16

A_CS5N

F15

A_CS6N

B17

A_CS7N

H16

A_BE0N

A17

A_BE1N

K

K L

L

O

I

C

M

I

S

S 4

4

2

2 T

T

P

KEY_COL(0)

KEY_COL(0) KEY_COL(1)

KEY_COL(1) KEY_COL(2)

KEY_COL(2) KEY_COL(3)

KEY_COL(3) KEY_COL(4)

KEY_COL(4)

KEY_ROW(0)

KEY_ROW(0) KEY_ROW(1)

KEY_ROW(1) KEY_ROW(2)

KEY_ROW(2) KEY_ROW(3)

KEY_ROW(3) KEY_ROW(4)

KEY_ROW(4) KEY_ROW(5)

KEY_ROW(5)

HP_CORE_1.6V

1

0

2

2 L

L

8

7

1

F

F U

U

_

A

A S

S

D

S

D

V

P

I

S

I

U

P

M

T

S

V

S

_

R

B

M

S

I

U

S

_

7

9

1

4

0

1

O

I

P

9

8

5

1

P

C

B

C

HP_CORE_1.6V

C202

C201

2

1

0

2

1

0

8

1

1 T

T

R

D

_

A

S

D

S

D

V

O

O P

P

M

V

_

B

S

U

_

2

3

1

O

I

P

7

6

1

1 E

E

D

2

1

9

8

1

8

9

8

7

8

1

H

M

8

6

5

7

1

S

V

A

N

T

E

A

O

D

_

B

S

0

U

_

D

K

6

7

X

L

3

R

C

O

P

I

S

P

4

3

7

6

1

R

F

E

H

M

L

J

L

K

H

9

8

7

6

5

3

1

4

2

0

1

S

V

D

D S

S

2

I

_

0

0 D

D X

X T

T P

P S

S 2

2 U

U

4

2

3

9

4

0

8

2

0

1

2

O

0

O

I

Q

P

O

P

I

R

_

0

_

I

P

0

S

_

D

R

0

F

R

S

0

O

C

S

T

X

I

T

P

X

D

S

D

C

R

T

R

3

1

3

1

4

5

6

2

3

2

T

P

N

M

9

8

1

2

G

A

4

3

2

1

S

V

UCP201

X

R

T

A

8

D

2

R

Q

I

_

R

I

2

1

_

4

1

O

X

I

X

P

T

R

6

7

6

1

L

K

R

8

3

2

1

7

1

V

N

M

V

H

8

7

6

5

4

E

R

O

C

_

D

V

2

4

1

3

0

D

R

B

Y

E

K

8

4

6

5

7

J

VCCD_1.8V

C205 C207

C204

C205 C207

C204

8

3

2

8

1

2

1

8

5

1

U

G

B

U

P

W

T

5

2

1

6

3

3 E

E R

R O

O C

C

_

_ D

D D

D V

V

F

F U

U B

B

_

1

1 W

W S

S P

P

_

5

5 D

D R

R B

B Y

Y E

E K

K 6

6 H

H

2

7

3

8

4

1

E

_

R

8

O

P

C

1

_

D

O

I

D

_

V

D

V

0

D

T

K

M

A

L

C

D

C

_

I

0

1

9

C

8

7

6

C

D

M

_

R

8

1

8

B

0

2

3

Y

O

E

I

K

P

K

P

2

6

4

3

1

3

5

4

1

H

G

J

K

VRTC_1.5V

C206

8

4

6

1

9

1

4

1

D

F

L

C

D

L

9

8

0

7

6

1

_

1

_

1

8

_

8

_

8

P

1

P

1

P

_

1

_

1

_

O

I

O

_

I

_

D

V

N

E

_

E

_

0

2

3

1

_

D

T

A

M

A

D

C

D

_

I

C

M

_

3

4

2

9

0

4

2

3

4

O

I

P

4

5

2

3

4

1

L

N

M

2

6

1

C

B

5

3

4

_

8

P

1

_

O

I

_

D

V

N

N M

M R

R A

A L

L

C

A

T

C

R

T

1

2

X

R

9

7

1

F

H

C208

4

2

5

8

1

4

6

G

W

B

W

B

I

1

2

S

C

N

K

_

T

M

8

C

S

R

T

P

E

V

1

R

_

O

I

_

D

V

IOBIT1_PIO06

IOBIT1_PIO06 IOBIT0_PIO05

IOBIT0_PIO05 SPFS1_PIO15

SPFS1_PIO15

SPTXD1_I2SD_PIO16

SPRXD1_PIO17

SPRXD1_PIO17 SPCLK1_PIO18

SPCLK1_PIO18

CPTSTSTOP_CKO

Q

Q E

E

P

R

E

K

E

L

6

K

C

4

R

T

S

O

I

U

Y

W

P

S

P

O

_

2

1

0

5

0

9

3

1

2

1

M

C

O

S

I

W

I

O

P

6

5

9

7

5

1

G

V

P

V

P

G

OSC200

2

1

1 R

R

N

N T

T S

S R

R T

T

CKO_IACK

INT0

RWN

D_D15

D_D15 D_D14

D_D14 D_D13

D_D13 D_D12

D_D12 D_D11

D_D11 D_D10

D_D10

D_D9

D_D9 D_D8

D_D8 D_D7

D_D7 D_D6

D_D6 D_D5

D_D5 D_D4

D_D4 D_D3

D_D3 D_D2

D_D2 D_D1

D_D1 D_D0

D_D0 D_A8

D_A8 D_A7

D_A7 D_A6

D_A6 D_A5

D_A5 D_A4

D_A4 D_A3

D_A3 D_A2

D_A2 D_A1

D_A1 D_A0

D_A0

TEST3

TEST3 TEST2

TEST2 TEST1

TEST1

ATDO_PWM2

ATDI_RTS1

ATCK_CTS1

ATMS_PIO45

PIO31_IRQ6

PIO31_IRQ6 PIO00_IRQ5

PIO00_IRQ5

IRQ4

IRQ4 IRQ3

IRQ3 IRQ2

IRQ2 IRQ1

IRQ1

PIO47

PIO47 PIO34

PIO34 PIO33

PIO33

2

6

7

8

3

2

O

I

P

3

6

9

7

1

R

U

W

C215C214

MCI_DAT0_EN

MCI_DAT0_EN MCI_CMD_EN

MCI_CMD_EN

MCI_DAT0

MCI_DAT0 MCI_CMD

MCI_CMD MCI_CLK

MCI_CLK

CLK13M_TR

0

RST

0

0 2

2 R

R

R201

V

T12

TDO

V14

TDI

U14

TCK

N12

N12 N11

N11 V12

V12 N15

N15 N16

N16 M17

M17 M18

M18 T15

T15 W6

W6

IO

V6

V6 P11

P11 N10

N10 N9

N9 N8

N8 P9

P9 P8

P8 R9

R9 T9

T9 T8

T8 U8

U8 V8

V8 R8

R8 T7

T7 R7

R7 T6

T6 U6

U6 R6

R6 N6

N6 V4

V4 T5

T5 U4

U4 V3

V3 W3

W3 W2

W2 V1

V1 V16

V16 T14

T14 U15

U15 T17

T17 T13

T13 L5

L5 M4

M4 K12

K12 P12

P12 P16

P16 P18

P18 P17

P17 M19

M19 M16

M16 J16

J16 R14

R14 U18

U18

DSP_DB(15)

DSP_DB(15) DSP_DB(14)

DSP_DB(14) DSP_DB(13)

DSP_DB(13) DSP_DB(12)

DSP_DB(12) DSP_DB(11)

DSP_DB(11) DSP_DB(10)

DSP_DB(10) DSP_DB(9)

DSP_DB(9) DSP_DB(8)

DSP_DB(8) DSP_DB(7)

DSP_DB(7) DSP_DB(6)

DSP_DB(6) DSP_DB(5)

DSP_DB(5) DSP_DB(4)

DSP_DB(4) DSP_DB(3)

DSP_DB(3) DSP_DB(2)

DSP_DB(2) DSP_DB(1)

DSP_DB(1) DSP_DB(0)

DSP_DB(0)

CHG_OFF

CHG_OFF EAR_SWITCH

EAR_SWITCH CHG_DET

CHG_DET EAR_SEL

EAR_SEL AMP_EN

AMP_EN MIC_SEL

MIC_SEL PWM_MAG

PWM_MAG XOENAQ

XOENAQ PWR_KEEP

PWR_KEEP CLK32K

CLK32K RTCALARM

RTCALARM

FLASH_EN1

FLASH_EN1 SPK_SEL

SPK_SEL PCM_SYNC

PCM_SYNC PCM_IN

PCM_IN PCM_OUT

PCM_OUT PCM_CLK

PCM_CLK DSP_INT

DSP_INT DSP_IO

DSP_IO DSP_RWN

DSP_RWN

DSP_AB(8)

DSP_AB(8) DSP_AB(7)

DSP_AB(7) DSP_AB(6)

DSP_AB(6) DSP_AB(5)

DSP_AB(5) DSP_AB(4)

DSP_AB(4) DSP_AB(3)

DSP_AB(3) DSP_AB(2)

DSP_AB(2) DSP_AB(1)

DSP_AB(1) DSP_AB(0)

DSP_AB(0)

R204

CP_TDO

CP_TDO CP_TDI

CP_TDI CP_TCK

CP_TCK CP_TMS

CP_TMS CARD_INS

CARD_INS HALL_SENSOR

HALL_SENSOR LCDC_INT

LCDC_INT YMU_IRQ

YMU_IRQ JACK_IN

JACK_IN INTRQ

INTRQ M_HOLD

M_HOLD USB_CON

USB_CON AK_EN

AK_EN

DSP_DB(0:15)

DSP_AB(0:8)

2-5

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-E770 Flow Chart of Troubleshooting

2-6

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-E770 Flow Chart of Troubleshooting

2-1-3. Sim Part

"Insert SIM" is displayed on the LCD

The voltage is 2.8V

at the pin #1 of ZD307?

YES

NO

Check the UCP301

Is there any signal

pin #2,3,4 of ZD307 ?

YES

Check the SIM Card

END

NO

Check the UCP301 & UCP201

2-7

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

VSIM

SIM_RST

SIM_RST SIM_CLK

SIM_CLK

C305

SGH-E770 Flow Chart of Troubleshooting

6

5

6

5

4

K

K C

C O

O L

L C

C

O

I

1

SIM301

11

11 22

22 33

33

10

C306 C307C304

4

C

N

N D

D N

N G

G

2

ZD307

C

C V

V

M

I

I S

S

3

6

5

4

GG89GG

7

C308

SIM_IO

2-8

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-E770 Flow Chart of Troubleshooting

2-1-4. Microphone Part

Micro-phone does not work

Is the assembled status of

Microphone O.K?

YES

Check the DC bias voltage on

Mic path.

NO

Reassemble the microphone

The voltage of TA434 is

about 2.2V±10%?

YES

Is microphone OK?

YES

END

NO

Solder the microphone again

or Replace

TA434,C433,R433,R438,R437

Check UCP301

2-9

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

MICINP

MICOUTP

C441

R440

VCCA_2.9V

R433

TA434

R439

SGH-E770 Flow Chart of Troubleshooting

C433

R437

C440

R438

MAIN_MIC+

MICINN

MICOUTN

C445

R442

R441

C444

MAIN_MIC-

2-10

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

SGH-E770 Flow Chart of Troubleshooting

2-1-5. Speaker Part

There is no sound from speaker

Is the terminal of speaker O.K?

YES

Are there any signal

at the pin #36, 38 of HDC503?

YES

NO

Replace the speaker

Check the LCD module

& Replace HDC503

YES

Are there any signal

at the pin #1,5 of U408?

Pin #2 of U408

is Low?

YES

Pin 8 of U301

is High?

is High? NO

NO

Check UCP301

Thetypeofsoundfrom

the speaker is Melody?

NO

NO NO

YES

NO

Check

Check UCD403,

UCD403, UCP301,

UCP301, UCP201

UCP201

Check U301

NO

Are there any signal

at the pin #3,15 of U408?

YESYES

Pin #4 of UCP201

is High?

YES

END

2-11

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization