Samsung SGH-S3030, S3030 TSHOO

10. Flow Chart of Troubleshooting

10-1-1. Power ON

		'Power On' does not work
		Check the current consumption
			Yes
		Current consumption					No
									Download again
		>= 100mA

Yes

Check the Vbat Voltage

No

Voltage >=3.3V		Charge the Battery

Yes

Check the pin of UCD300

No

Pin#A6 : 1.8V Check UCD300 and C341,C340

Pin#D6 : 2.9V

Yes

Pin#M7 = 2.9V

Check UCD300 and

Pin#L8 = 1.8V

No

C300,C301,C303

Yes

Yes

Check the clock signal at pin#12 of RFT100

No

Freq = 26MHz

Check the clock generation circuit

Vrms >=300mV

Vpp 1000mV

(related to OSC100,Pin9,Pin10,)

Yes

Check the initial operation

END

10-1

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

	L503	OSC300			C311
					3C	3C	3C	3C	C340
	L501
		C300	C324	C323	21	01	31	23	C	C	C
	C301								923	133	143
	C303									C314

C319

D3CU

103L

C320

C321

00

C401

C400

033C

823C

ZD506

ZD505

223C

203C

933C

523C

333C

123R

833C

433C

533C

733C

403C

633C

2U

VCCD_2.9V

VCCA_2.8V

VCCD_1.8V

20

C300

C301

C302

C303

DCDC_OUT

VRF_2.9V	C304

7M

1N

21N

41C

51D

2K

01N

51P

11L

5K

8L

4P

TH300

GND_SW

DDV

DDV

DDV

AD1 DV

CB1 DDV

BDD V

DDD V

RKP SDDV

VDD V

LTC OADDV

IOD DV

IOD DV

A4

B3

B4

ADC_AUX1

ADC_AUX2

ICHRG

R307

A2

ADC_AUX3

R306

B1

ADC_AUX4

C1

ADC_AUX5

C2

ADC_AUX6

R310

C308

C309

D1

ADC_AUX7

D2

ADC_AUX8

ADC_AUX9

M3

AOCTL0

M2

AOCTL1

L3

AOCTL2

L2

AOCTL3

HI_MONO_OUT_N				R13			HI_MONO_OUT_N
				R14
HI_MONO_OUT_P				R12			HI_MONO_OUT_P
LO_MONO_OUT_N				P11			LO_MONO_OUT_N
LO_MONO_OUT_P							LO_MONO_OUT_P
				G13
	MONO1_IN_N						MONO1_IN_N
				J13
	MONO1_IN_P			G12			MONO1_IN_P
	MONO2_IN_N			G11			MONO2_IN_N
	MONO2_IN_P			N15			MONO2_IN_P
MONO_OUT_N							MONO_OUT_N
				L13
MONO_OUT_P							MONO_OUT_P
		R314		K15
	RADIO_L						STEREO1_IN_L
	RADIO_R	R316					STEREO1_IN_R
				H11			STEREO2_IN_L/M
				J12			STEREO2_IN_R/M
				M14
STEREO_OUT_L							STEREO_OUT_L	UCD300
				M13
STEREO_OUT_R				P6			STEREO_OUT_R
	PWR_KEEP						PWR_KEEP
				E5
	JIG_ON			C4			PWR_SW2
	PWR_ON						PWR_SW1N
				F14
							MIC_B_D
				J5			RAREF1
				H6
							RAREF2
				J6
							RAREF3

C107	1C
1C

OSC100

10

00

41

C122

1R

R100

R115

R103

1R

C108

20

001TFR

901C

121C

01C

6

L110

L112

1L

1L

1L

1L

30

50

60

80

01L

11L

11L

11L

9

1

3

4

L104

L107

SIM_CLK	B6			SIM_CLK	VSYN_2.8V VRF_2.9V
	E6
SIM_IO	B5			SIM_IO
SIM_RST	N5			SIM_RST
UP_CLK	L6			SIM1_CLK
UP_IO	M6			SIM1_DATA
UP_RST	E3			SIM1_RST
VRFLDO_1
	F3
VRFLDO_2
	F2
VREF
CNTL_DAT_CSP	P1			CNTL_DAT_CSP	C310	C311		C312
	N9
CNTL_EN_CSP				CNTL_EN_CSP

HV_CHRG	D10
	G5
AFC
	N7
AINT	B11		AINT
BATKELV	F1		VBAT
CREF	L9
DINT	B12		DINT	C313
FBSW	B13
LX	D3			DCDC_OUT
NC1	L10	L301
PSW1_BUF			PSW1_BUF	C314
	R3	TP_RTC
RTC_CLK			RTC_CLK
	P3			GND_SW
SCUSTB	C9		SCUSTB
VACC	A12
VEXT				R313
	F5
VRTC	C5
VSIM	N4			VSIM_2.9V	1
SCAN	K7			POS
SCANTST	E8		C316
RING_DRV	L7		MOTOR_EN	C318	BAT300
VIB_DRV
	E9
VIB_RNG_EN			VIB_RNG_EN

N6	CLK26M_ABB	NEG	2
SYSCLK
R6	CLK_EN_ABB
SYSCLKEN
R4	FLASH_RST
RESETN P5
RESET_O	RST

C319

C320

C321

KEY_BL

KEY_SLIDE_EN

RXTX_DATA

RXTX_EN

CV21.CDCV

RVVF15.

SOOCDRAVEL

CCDVAV21.

V18.BVT

VDVS82.

CCVAV82. VD29.CCVVDCCV81.

RTX_I_N

RTX_I_P

RTX_Q_N

RTX_Q_P

PAM_VRAMP

TXPSTB

433 C

633 C

733 C

R321

043 C

533 C

833 C

933 C

143 C

VRF_2.9V

R100

26MHZ_BT

C122

D7

LED1_DRV

X1RTC

G4

C7

G3

LED2_DRV

X2RTC

D9

LED3_DRV

K13

N2

VAMICREF

VAMICREF

K10

R2

RXTXDATA

VAMICRTN

K12

OSC300

RXTXEN

VAREF

C323

J4

RXTXIN

VAREFRTN

J11

C324

J3

L14

C322

RXTXIP

VAVCM

K3

RXTXQN

VAVCMLSH

F13

K4

K11

RXTXQP

VAVCMRTN

C325

H5

TXP

CSN_PSC

M10

UP_CS

L5

P10

TXPSTB

SCLK_PSC

R10

UP_SCLK

VBAT

VBAT

P13

SDI_PSC

M9

UP_SDI

P12

USB_CARKIT_D_N

SDO_PSC

UP_SDO

C10

USB_CARKIT_D_P

B10

USB_CHRG

VBAT

C6

VBAT12

A6

E13

VLDO_1

VBATAUD

D6

E11

VLDO_2

VB ATAUX

E2

VBATRF

E14

A14

VLDO_AUD

VBATSW

F12

D14

VLDO_AUX1

1

VLDO_AUX2

NC

2

C15

VLDO_COREA

NC

C332

C333

C328

C329

C330

C331

B15

VLDO_COREA_S

C12

D13

VLDO_COREB

VLDO_COREC

B

D

Q

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

S

RKPS

V

LTOCA

RUCH

RUCH

CSP

CSP

CPS

WS

SSV

SSV

SSV

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

DNG

6K 8K

9K

1K

11N

4F

01E

6F

7F

8F

9F

01F

11F

6G

7G

8G

9G

01G

7H

8H

9H

01H

7J

8J

9J

1J0

41N

51M

1M

01A

7E

3A 11 C

51F

31A

GND_SW

GND_SW

VRF_2.9V

R102

C101

R101

GSM_PAM_IN

R115

C100

R114

DPCS_PAM_IN

R105

53

43

33

23

13

03

92

82

72

RTX_I_P

1

A

CN

CN

DNG

DNG 6DD V

FER R

5DD V

1XT

2XT

26

C106

2

VDD4

25

RTX_I_N

AX

RX1X

GSM850_LNA_IN_N

3

24

RTX_Q_P

B

RX1

GSM850_LNA_IN_P

4

23

RTX_Q_N

BX

RX2X

GSM900_LNA_IN_N

5

RFT100

22

C107

FSYS3

GND

GSM900_LNA_IN_P

6

VDD1

RX2

21

7

FSYS2

RX3X

20

DCS_LNA_IN_N

8

19

VDD2

RX3

DCS_LNA_IN_P

9

18

XO

RX4X

PCS_LNA_IN_N

10

17

XOX

1SY 3DD S V F

RX4

PCS_LNA_IN_P

DNG

KLC

R103

AD

NE

11

21

31

41

51

61

3

2

KCBS TDBS EBLS

VRF_1.5V

DBB

4

1

C108

M62K

LC

OSC100

C109

BB

D

M62

KL

10-2

C

VRF_1.5V

C121

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

10-1-2. Initial

Initial Failure

Yes

The pin #A6 of UCD300 = 1.8V and

the pin #D6 of UCD300 = 2.9V ?

Yes

Is the pin #P5 of UCD300 "Low → High" ?

Yes

There is 32.768kHz wave forms at the C323 and C324

Yes

The voltage is "High" at the

C300,C301,C302,C303

Yes

LCD display is O.K

Yes

Sound is O.K

Yes

END

No

Check the UCD300

(if it has some problem, it is to be replaced.)

No

Check the UCD300

(if it has some problem, it is to be replaced.)

No

Check the UCD300

No

Check the UCD300

No

Check the LCD part

No

Check the Audio part

10-3

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

						OSC300
		L503
		L501
						C300		C324	C323
		C301
		C303
		C319							U
		C321							DC
									003
		C320
		C401
		C400
	ZD506
	ZD505
		3C		3C	3C	3C	3C	3R	3C	3C
		22		20	93	52	33	12	83	43

VCCD_2.9V VCCA_2.8V VCCD_1.8V

C311

	213C	013C	313C	233C

3C		3C
	3C		3C
53	73	40	63

C340

923C	133C		143C
C314
103L
033C		823C
		02U
	2

C300

C301

C302

C303

DCDC_OUT

VRF_2.9V

C304

21N

41C

51D

01N

51P

11L

GND_SW

7M

1N

2K

5K

8L

4P

TH300

DDV

DDD V

VDD V

A4

ADC_AUX1

B4

DDV

DDV

A1DDV

CB1DDV

BDDV

RKPSDDV

LTCOADD

IODDV

IODDV

R307

B3

ADC_AUX2

V

A2

ADC_AUX3

ICHRG

B1

ADC_AUX4

R306

C1

ADC_AUX5

C2

ADC_AUX6

R310

C308

C309

ADC_AUX7

D1

ADC_AUX8

D2

ADC_AUX9

M3

AOCTL0

M2

AOCTL1

L3

AOCTL2

L2

AOCTL3

	HI_MONO_OUT_N						R13			HI_MONO_OUT_N
							R14
	HI_MONO_OUT_P						R12			HI_MONO_OUT_P
	LO_MONO_OUT_N						P11
										LO_MONO_OUT_N
	LO_MONO_OUT_P
										LO_MONO_OUT_P
		MONO1_IN_N					G13			MONO1_IN_N
							J13
			MONO1_IN_P				G12			MONO1_IN_P
		MONO2_IN_N					G11			MONO2_IN_N
			MONO2_IN_P				N15			MONO2_IN_P
		MONO_OUT_N					L13			MONO_OUT_N
		MONO_OUT_P
										MONO_OUT_P
			RADIO_L			R314	K15			STEREO1_IN_L
			RADIO_R			R316	K14
										STEREO1_IN_R
							H11
							J12			STEREO2_IN_L/M
										STEREO2_IN_R/M
	STEREO_OUT_L						M14
										STEREO_OUT_L	UCD300
							M13
	STEREO_OUT_R									STEREO_OUT_R
							P6
			PWR_KEEP							PWR_KEEP
							E5
			JIG_ON
							C4			PWR_SW2
			PWR_ON
										PWR_SW1N
							F14			MIC_B_D
							J5			RAREF1
							H6
										RAREF2
							J6
										RAREF3
	C320		C321			KEY_BL	D7
C319										LED1_DRV
							C7
					KEY_SLIDE_EN
							D9			LED2_DRV

LED3_DRV

SIM_CLK

SIM_IO

SIM_RST

UP_CLK

UP_IO

UP_RST

VRFLDO_1

VRFLDO_2

VREF

CNTL_D AT_CSP

CNTL_EN_CSP

HV_CHRG

AFC

AINT

BATKELV

CREF

DINT

FBSW

LX

NC1

PSW1_BUF

RTC_CLK

SCUSTB

VACC

VEXT

VRTC

VSIM

SCAN

SCANTST

RING_DRV

VIB_D RV

VIB_RNG_EN

SYSCLK

SYSCLKEN

RESETN

RESET_O

X1RTC

X2RTC

CV 2.1 DCC V

V5.1 FRV

SAE ROC ODL V

AV 2.1 DCC V

V8.1 TBV

433 C		533 C				633 C

		RXTX_DATA			N2
					R2
			RXTX_EN			RXTXDATA
					J4
						RXTXEN
			RTX_I_N		J3
V28.	V8.2 VV98.2.1 CCVA DCCCVDCV	PAM_VRAMP				RXTXIN
					L5
			RTX_I_P		K3
			RTX_Q_N			RXTXIP
					K4
			RTX_Q_P			RXTXQN
						RXTXQP
					H5
			TXPSTB			TXP
DSV						TXPSTB
					P13
						USB_CARKIT_D_N
					P12
						USB_CARKIT_D_P
					C10
						USB_CHRG

A6

VLDO_1

D6

VLDO_2

R321	E14
	VLDO_AUD
	F12
	VLDO_AUX1
	D14
	VLDO_AUX2
	C15
	VLDO_COREA
	B15
	VLDO_COREA_S
	C12
	VLDO_COREB
	D13
	VLDO_COREC

733 C

833 C

933 C

043 C

143 C

SSV

SSV

SSV

BDN G

VAMICREF

VAMICRTN

VAREF

VAREFRTN

VAVCM

VAVCMLSH

VAVCMRTN

CSN_PSC

SCLK_PSC

SDI_PSC

SDO_PSC

VBAT

VBAT12

VBATAUD

VBATAUX

VBATRF

VBATSW

NC

NC

LT

R

R

DDN G

QDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

SDN G

RKP SDN G

VDN G

COA DNG

UCH DNG

UCH DNG

CSP DNG

CSP DNG

CSP DNG

WS DNG

6K

8K

9K

1K

11N

4F

01E

6F

7F

8F

9F

01F

11F

6G

7G

8G

9G

01G

7H

8H

9H

01H

7J

8J

9J

01J

41N

51M

1M

01A

7E

3A

11C

51F

31A

B6	SIM_CLK	VSYN_2.8V VRF_2.9V
E6
B5	SIM_IO
	SIM_RST
N5	SIM1_CLK
L6
M6	SIM1_DATA
	SIM1_RST
E3
F3
F2
P1	CNTL_DAT_CSP	C310	C311	C312
N9
	CNTL_EN_CSP

D10
G5
N7		AINT
B11
F1		VBAT
L9		DINT	C313
B12
B13			DCDC_OUT
D3	L301
L10
		PSW1_BUF	C314
R3	TP_RTC
		RTC_CLK
P3			GND_SW
C9		SCUSTB
A12			R313
F5
C5			VSIM_2.9V
N4				1
K7			POS
E8		C316
L7		MOTOR_EN	C318	BAT300
E9
		VIB_RNG_EN

N6	CLK26M_ABB					NEG		2
R6	CLK_EN_ABB
R4
	FLASH_RST
P5
	RST
G4
G3
K13	VAMICREF
K10				OSC300
K12			C323					C324
J11
L14	C322
F13
K11
	C325
M10	UP_CS
P10
R10	UP_SCLK			VBAT	VBAT
M9	UP_SDI
	UP_SDO
B10
C6
E13
E11
E2
A14
1
2	C332	C333	C328	C329		C330			C331

GND_SW

GND_SW

10-4

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

10-1-3. Sim Part

"Insert SIM is displayed on the LCD

Yes

Check the SIM connector's (SIM600) connection to SIM card

Yes

Check the voltage at pin#1 of SIM600 >= 2.8V ?

Yes

Is there any signals pin#2,#3,#4 of SIM600 ?

Yes

Check the SIM Card

END

No

Resolder or change SIM600

No

Check the UCD300

No

Check the UCD300

10-5

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

201R

001TFR

C

01

9

01C

6

L112

L

L

L

L

01

01

01

01

1L

3

5

6

8

41

L104

L107

F102

F101

L121

L120

L119

C308

R310

TH300

R306

001MAP

C129

C130

C126

C128

R106

C125

R101

R105

C

11

C154

4

713C

R319

		611L
002N
OCJ

101TNA

006MIS

6DZ

6DZ

DZ

406C

806C

706C

DZ

606C

506C

613C

4DZ

4DZ

006

206

10

90

00

10

						SIM600
				6	6				1	1
			5		5				2	2
SIM_IO				4	4				3	3
			12		12				7	7
				11	11				8	8
				10	10				9	9
					G G G G
		C604			13 14 15 16						C605	C606	C607	C608

	L503	OSC300			C311
					3C	3C	3C	3C	C340
	L501
		C300	C324	C323	21	01	31	23	3C	3C	3C
	C301								92	13	14
	C303									C314

C319

003DCU

103L

C321

C320

C401

C400

033C

823C

ZD506

ZD505

223C

203C

933C

523C

333C

123R

833C

433C

533C

733C

403C

633C

202U

VCCD_2.9V VCCA_2.8V VCCD_1.8V

C300

C301

C302

C303

DCDC_OUT

VRF_2.9V	C304

7M

1N

21N

41C

51D

2K

01N

51P

11L

5K

8L

4P

TH300

GND_SW

DDV DDV

DDV

A1D DV

CB1 DDV

BDD V

DDD V

RKP SDDV

VDD V

LTC OADDV

IOD DV

IOD DV

A4

B6

SIM_IO

VSYN_2.8V VRF_2.9V

B3

B5

B4

ADC_AUX1

SIM_CLK

E6

SIM_CLK

R307

ADC_AUX2

SIM_IO

SIM_RST

A2

ADC_AUX3

SIM_RST

ICHRG

B1

ADC_AUX4

N5

SIM1_CLK

R306

C1

ADC_AUX5

UP_CLK

L6

C2

ADC_AUX6

UP_IO

M6

SIM1_DATA

R310

C308

C309

D1

ADC_AUX7

UP_RST

SIM1_RST

D2

ADC_AUX8

E3

ADC_AUX9

VRFLDO_1

F3

VRFLDO_2

M3

AOCTL0

M2

F2

AOCTL1

VREF

L3

AOCTL2

L2

AOCTL3

CNTL_DAT_CSP

P1

CNTL_DAT_CSP

C310

C311

C312

N9

HI_MONO_OUT_N

R13

CNTL_EN_CSP

CNTL_EN_CSP

R14

HI_MONO_OUT_N

D10

HI_MONO_OUT_P

R12

HI_MONO_OUT_P

HV_CHRG

G5

LO_MONO_OUT_N

P11

LO_MONO_OUT_N

AFC

N7

LO_MONO_OUT_P

LO_MONO_OUT_P

AINT

B11

AINT

MONO1_IN_N

G13

BATKELV

F1

VBAT

J13

MONO1_IN_N

CREF

L9

DINT

MONO1_IN_P

G12

MONO1_IN_P

DINT

B12

C313

MONO2_IN_N

G11

MONO2_IN_N

FBSW

B13

MONO2_IN_P

N15

MONO2_IN_P

LX

D3

DCDC_OUT

MONO_OUT_N

L13

MONO_OUT_N

NC1

L10

L301

MONO_OUT_P

PSW1_BUF

C314

MONO_OUT_P

PSW1_BUF

R3

TP_RTC

RADIO_L

R314

K15

RTC_CLK

P3

RTC_CLK

STEREO1_IN_L

SCUSTB

SCUSTB

GND_SW

RADIO_R

R316

H11

STEREO1_IN_R

VACC

A12

R313

J12

STEREO2_IN_L/M

VEXT

F5

M14

STEREO2_IN_R/M

VRTC

C5

STEREO_OUT_L

M13

STEREO_OUT_L

UCD300

VSIM

N4

VSIM_2.9V

1

STEREO_OUT_R

P6

STEREO_OUT_R

SCAN

K7

C316

POS

PWR_KEEP

SCANTST

E5

PWR_KEEP

RING_DRV

E9

BAT300

JIG_ON

C4

PWR_SW2

VIB_DRV

L7

MOTOR_EN

C318

PWR_ON

PWR_SW1N

VIB_RNG_EN

VIB_RNG_EN

		F14		N6		CLK26M_ABB	NEG	2
			MIC_B_D	SYSCLK
				R6		CLK_EN_ABB
		J5		SYSCLKEN
			RAREF1	R4
		H6				FLASH_RST
		J6		P5
			RAREF2	RESETN		RST
			RAREF3	RESET_O

C319

C_V 2.1_ DCC V

V5.1 _FR V

S_AE ROC _OD LV

433 C		533 C

C320	C321				KEY_BL			D7
								C7
		KEY_SLIDE_EN							LED1_DRV
								D9
									LED2_DRV
									LED3_DRV
			RXTX_DATA					N2
								R2
					RXTX_EN				RXTXDATA
								J4
									RXTXEN
					RTX_I_N			J3
		V8.2 V9.2V8.1 ACCV DCCCVDCV			RTX_I_P				RXTXIN
								K3
AV2 V .1DCCV 8VBT1.	V8DVS.2				RTX_Q_N				RXTXIP
									USB_CARKIT_D_N
								K4
					RTX_Q_P				RXTXQN
									RXTXQP
			PAM_VRAMP					H5
								L5	TXP
					TXPSTB				TXPSTB
								P13
								P12
									USB_CARKIT_D_P
								C10
									USB_CHRG

A6

VLDO_1

D6

VLDO_2

R321	E14	VLDO_AUD
	F12
	D14	VLDO_AUX1
		VLDO_AUX2

C15

VLDO_COREA

B15

VLDO_COREA_S

C12

VLDO_COREB

D13

VLDO_COREC

633 C	733 C	833 C	933 C	043 C	143 C	SSV	SSV	SSV	BDN G
					K6	K8		K9	K1

DD

QD

SD

SD

SD

SD

SD

SD

SD

SD

SD

NG

NG

NG

NG

NG

NG

NG

NG

NG

NG

NG

1N1

F4

0E1

F6

F7

F8

F9

0F1

1F1

G6

G7

G8

SD	SD	SD	SD	SD	SD
NG	NG	NG	NG	NG	NG
G9	0G1		H7	H8	H9

SD	SD
NG	NG
0H1	7J

									LT
	SD		SD		SD		RKP SD	VD	COA D
	NG		NG		NG		NG	NG	NG
8J		9J		01J		4N1	5M1		1M

	X1RTC	G4
		G3
	X2RTC
	VAMICREF	K13	VAMICREF
		K10
	VAMICRTN			OSC300
		K12
	VAREF		C323
	VAREFRTN	J11		C324
	VAVCM	L14	C322
		F13
	VAVCMLSH
		K11
	VAVCMRTN
			C325

M10		UP_CS
P10
CSN_PSC		UP_SCLK
R10
SCLK_PSC		UP_SDI			VBAT		VBAT
SDI_PSC M9
SDO_PSC		UP_SDO
B10
VBAT
C6
VBAT12
E13
VBATAUD
E11
VBATAUX
E2
VBATRF
A14
VBATSW
1
NC
2		C332	C333	C328		C329		C330	C331
NC

	RUC HD		RUC HD		CSP D		CSP D	CSP D		WS D
	NG		NG		NG		NG	NG		NG
0A1		E7		A3		1C1		5F1		3A1

GND_SW

GND_SW

VSIM_2.9V SIM_RST SIM_CLK

10-6

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

10-1-4. Microphone Part

Microphone does not work

Yes

Is the assembled status of microphone O.K?

Yes

Check the reference voltage on mic path

Yes

On booting,

VAMICREF 2.5V ?

Yes

On booting, between MIC+&MIC- 1.9V?

Yes

END

No

Reassembled the microphone

No

Check UCD300

No	Resolder or change
	L403, L404, R410, R409, R411, R414,
	R416, R417, R418, R419, R423, R425

10-7

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization