Samsung SGH-I700 Troubleshooting

2. SGH-i700 Flow Chart of Troubleshooting

1.Power On

'POWER ON' does not work

Yes

Check the current consumption more than 20mA

Yes

Check the pin 1 of

U316 or U317 is High

Yes

Check the pin 1 of

U323 is High

Yes

Check the VBat more than 3.6V

Yes

Check the pin

4 of U308 is more than

3.3V

Yes

Check the pin

5 of U311 is more than

1.0V

Yes

Check the clock signal at OSC101 and OSC102

Yes

Check the initial operation

END

No		Press nPower Key or Hardware
		Reset

No

Charge the Battery

No

Charge the Battery

No

Charge the Battery

No	Check to the path from pin 1 of
	CN301 to pin 1, 2 of U307

No

Check the pin 1 of U311 is High

No

Retry Hardware Reset

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SGH-I700 Flow Chart of Troubleshooting

TE

23n DV

R5 753 K01

653R K001

713 U

TA

BV

LIA

F_

RE

WO

Pn

	8	7
	DN	DN
	G	G
803
U
	NE	NI
	1	2
433	C
R	N

333R	K022
	6	5	4
703 U	1C,1 R	FFO /NO	1R, NIV
		1-1	2-1
	2R	C.V	C.V
	1	2	3
233 R	K22

TA

BV

TE

43n DV

R5 403 K01

4		3							4		3
DNG TUO		CN DDV			203 R	K00 1		323 U	DNG TUO		CN DDV
1		2							1		2
			553 C	FN1									223 FN C 1
						TAB V

6	5			31
DNG	DNG	133 C	FN0 01		ERO C	633 C	FU0 1	V01

GL		TU
F		O			U
3	4	033 C	FU33	V3.6	PC C
					CV

533R

K001

UP				8	7	6
CC CV				FPL LLP	EDO M/S	NIV
		113
			U
				NUR	HTI	BFV
				1	2	3

LIA

F_

RE

WO

Pn

923C

FU1

V61

043C	FU33	V3.6
933 C	FU0 1	V01
Hu0 1
503 L
5				FP0 2
WS			K09 3
DNG			843 R	543 C
4
			943 R	K07 4
		143 C	FP0 22

643 C		FN00 1
33T AB				513
				U

R 153

TA

BV

LIA

F_

RE

WO

Pn

453R

K001

	4
	Y
5	CCV	DNG
	B	A
	1	2

353R

K015

1 K00

	4	3
	DN	CN
613	G
U
	TU	DD
	O	V
	1	2

353C

FN1

_R NE

WP

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SGH-I700 Flow Chart of Troubleshooting

2. Initial part

Initial Failure

Yes

Check the "nRESET_IN" signal at the pin 2 of U109 is "High"

Yes

Check the "nGPIO_RESET" at the pin 1 of Q101 is "High"

Yes

Check the "SOFTWARE_RESET" at the in 1 of Q101 is "High"

Yes

No	Check the U110

No	Check the R125

No	Download again

Check the connections and initialization using Factory Test Program

			Yes
	Check LCD connector CN503,
	and resolder bridge
			Yes
			END
	TES ER		TE
	OIP Gn		DV2 3n
		5	G	101 W
				S
	3D		4S
		2-50 1
		Q
			43	21
UP	521 K00 R 1	271 FN0 C 01
C
CC				1	3
V

	101
2	Q
TES ER
ERA WTF
OS

NIT

ESE Rn

201

Q

S2

D3

2

1 G

TES ER

1

341 FN0 C 01

901

DNG

U

UPC CCV

01U1

4

3 UF23

CCV 3

Y 5 1 B 2

CCV

DNG

A

S7

UP

141 FN0 C 01

CT

C

CCV

TES ER OI

REW OPn

PGn

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SGH-I700 Flow Chart of Troubleshooting

3. Charge Part

Abnormal charging part

Yes

	Check the pin 16 of				No		Replace TC
	CN605 4.2V
		Yes			No
	Check the pin 1 of						Check to the path from CN605 to
	CN301 4.2V						pin 1 of CN301
		Yes
	Charging
		Yes
	END

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SGH-I700 Flow Chart of Troubleshooting

4. SIM Part

Phone can't access SIM card

Yes

Check the pin 1 of CN701. voltage is 2.8V

?

Yes

Check the SIM connector's CN701 Connection to SIM card

Yes

Check the circuit around U701 (Serial EEPROM) and data stored in it

Yes

END

No

Check the circuit related to CN701

No

Resolder CN701

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SGH-I700 Flow Chart of Troubleshooting

SIM _IO

CN701

1

6 6

1

2 2

5 5

3

G 4 4

C703

C702

3G G G

2.2UF

100NF

10 9

8

7

C701

33PF

C706

C705

33PF

33PF

SIM _RST

C704

SIM _CLK

100NF

VCCA

VCCB

R708

0

VREF

VBAT

VBAT

VO SC

49

50

51

48

29

30

28

6

R712

KLC MIS

0

STR MIS

OI MIS

IMSV

FER C

FER V

QDN G

1DD NG

SIM RST

54 UP_RST

VLDO _740

SIM CLK

53 UP_CLK

SIM DATA

52 UP_IO

VDD67 41

44

ADC_AUX1

VLDO _642

45

ADC_AUX2

56 ADC_TRIG

32

C719

C720

3

VACC

VL5S_A31

470NF

470NF

U701

VL5S_B

1

VBAT

VLDO _5

2

33

43

VEXT

VDD5 34

C724

AG ND

VPAC

BTEM P

46

36

1UF

VRF

PW R_SW 1N

47

VL4S_A35

13

PW R_SW 2

VL4S_B

RTC_ALM N

VLDO _437

21

PW R_KEEP

20

PSW 1_BUF

14

INTRQ

VDD34 38

VBAT

VCC_1.8A

VCCD

VRTC

BATT_BACKUP+

15

C711

SDI

C725

16 SDO

VLDO _339

1UF

470NF

17

SCLK

R719

18

CSN

VRTC12

1.2K

22

23

EN_3

24

EN_4[0]

11

R701

R705

25

EN_4[1]

VLDO _2

26

EN_5

0

0

27

EN_5A

19

EN_5B

RESETN

R703

55

RING _PW M

VLDO _19

RST

57

10

58

G ND

10

59

G ND

V

V

V

VDD12

60

G ND

DNG

NGD NGD

RD NGIR

VRD BIV

RD 1ELD

RD 2DEL

DNG DNG

GDN GDN

C712

GDN

G NDD

2.2UF

C717

C718

C715

C716

16

26 36

46

5

4

78

56

66 76

86

1UF

1UF

100PF

10NF

PO W ER

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