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7. Flow Chart of Troubleshooting

7-1. Power On

' Power On ' does not work

Yes

Check the Battery Voltage

is more than 3.3V

Yes

U401 pin57(PS_HOLD) = 2.6V?

Yes

Check the Clock at

XTAL401=32.768KHZ

Yes

C413(VREG_MSMC) = 1.375V?

Yes

C415(VREG_MSME) = 1.8V? C421(VREG_MSMP) = 2.6V? C423(VREG_MSMA) = 2.6V? C433(VREG_TCXO) = 2.85V?

Yes

Check for the clock at C407= 19.2MHz

Yes

Check the initial operation

Yes

END

Change the Battery

Check the PMIC related to PS_HOLD

Resolder XTAL401

Check the PMIC

No		Check the clock generation circuit
		Check the clock generation circuit
		(related to OSC201)
		(related to OSC201)

7-1

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting
Flow Chart of Troubleshooting		Power On

		U411
USB_VBUS _5V	8 IN	IN 1
	7 IN	OUT 2
	6 IN	ON/_OFF 3
	5 IN	GND 4

R403

C404	C475	C405	XTAL401
U408			CC7V-T1A

21 C408

REF_OUT

D401

							PS_HOLD	TP402	2
							PS_HOLD		3
									3
VREG_USIM				5 6 7 8			JIG_DETECT		1
				5 6 7 8
				G	21
R411	R412			G	21		RESET_N
R411	R412		NC104	90111 G 4 3 2 1			USIM_IO
				G 4 3 2 1			USIM_IO
							USIM_CLK
							USIM_RST
C440							C439	C441	KEY_PRESSED
				C443	C444				KEY_PRESSED
				C443	C444
									Q403
				U407			R413		3
				5V			R413
6		5						1
	OLC I	CN	CCV					1	2
									HFK_DETECT
	O	NG 2	MIS
CK 1		D	43
					U409
				4 GND OUT 1
				3 NC		VDD 2	ON_SW

< Power Management IC >

noticewithoutchangemayContents-ProprietarySAMSUNG

authorizationSamsung'swithoutusedbenotcanDocumentThis

PS_HOLD

R435

C401

78 68

2-7

R436

JIG_ON

C472

R402

VREG_MSME _1.8V

VREG_MMC _2.85V

VREG_MSMP_2.6V

VREG_MSMA _2.6V

VREG_BT _2.8V

V_IN

VREG_RFTX _2.85V

VREG_SYNT _2.85V VREG_TCXO _2.85V

R437

C473

R438

C474

VREG_MSMC_1.375V

VREG_USB_3.3V

VREG_USIM _2.85V

KEY_LED_ON _3.05V

VREG_RFRX _2.85V

U401

V_IN

VCHG

VSW_5V

TP401

USB_VBUS

VREG_5V

ISNS_P

VSW_PA

C402

ISNS_M

VREG_PA

L402

CHG_CTL_N

VSW_MSMC

USB_CTL_N

VREG_MSMC

L403

VBAT

VSW_MSME

VCOIN

VREG_MSME

BAT_FET_N

VREG_USB

VBACKUP

VREG_MMC

C406

VREG_RUIM

ADC_BYP

VREG_MSMP

XTAL_IN

VREG_MSMA

XTAL_OUT

VREG_WLAN

SLEEP_XTAL_IN

C407

SLEEP_CLK

VREG_RFRX2

TCXO_IN

VREG_RFRX1

TCXO

TCXO_EN

VREG_RFTX

TCXO_EN

R405

TCXO_OUT

VREG_SYNT

TCXO_OUT

AMUX_IN1

VREG_TCXO

AMUX_IN2

REF_ISET

C409

R406

AMUX_OUT

REF_BYP

REF_OUT

REF_GND

* GND to Pin62

USB_OE_N

FLSH_DRV_N 8

USB_OE_N

C410

C411

USB_DAT

GP1_DRV_N 21

USB_DAT

USB_SEO

USB_SE0

LCD_DRV_N 22

USB_ID

KPD_DRV_N 23

USB_D_P

VIB_DRV_N 25

USB_D_M

SPKR_IN_P 76

KPDPWR_N

SPKR_IN_M 78

C413 C414

C415 C416

C417 C418

C419 C420 C470 C421

C423 C424 C425 C471C426

C429

C431

PS_HOLD

SPKR_OUT_P 75

C422

C427

C428

C430

C432

C433

C434

CBL1PWR_N

SPKR_OUT_M 79

<POWER>

R410

390

CBL0PWR_N

SPKR_BYP 74

V_IN

PON_RESET_N

VDD_SPKR 77

SIM_IO

RUIM_M_IO

VREG_MSMC

1.375V, 500mA

RUIM_IO

VDD_PA 29

SIM_CLK

RUIM_M_CLK

VDD_MSMC 33

RUIM_CLK

VDD_MSME 35

VREG_MSME

1.8V, 500mA

SIM_RST

RUIM_M_RST

VDD_RUIM 41

RUIM_RST

VDD_MSM 52

VREG_USB

3.3V, 50mA

PMIC_SBDT

SBDT

VDD_ANA 54

PMIC_SBCK

SBCK

VDD_WLAN 65

VREG_MMC

2.85V, 150mA

C442

PMIC_SBST

MSM_INT_N

VDD_MAIN 83

SBST

VDD_RF 71

PM_INT_N

VREG_USIM

2.85V, 150mA

DNG

CN CN

VBATT

V_IN

VREG_MSMP

2.6V, 300mA

R439

C446 C447 C448 C449C450 C451 C452 C453C454

VREG_MSMA

2.6V, 300mA

U414

U415

R458

KEY_LED_ON

3.05V, 150mA

1 IN

1 D

D 6

VREG_RFRX

2.85V, 150mA

Q404

R440

2 GND

2 D

D 5

VREG_RFTX

2.85V, 150mA

JIG_DETECT

3 FLAG

3 G

S 4

GATE

VREG_SYNT

2.85V, 50mA

R408

C481

VREG_TCXO

2.85V, 50mA

JIG_ON

R409

VREG_MOTOR

3.3V, 150mA

MEL_VCC

3V, 300mA

VREG_BT

2.8V, 150mA

Flow Chart of Troubleshooting

7-2. Initial

Initial Failure

	Yes
RESET_N(TP337) IS 'H'?		No
		No	Check the PMIC

	Yes



CN505 pin 37, 38(LCD		No
		No	Check the LCD RESET Circuit

RESET) is 'H' Level?
RESET) is 'H' Level?

Yes

END

7-3

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

			1L 4L 8M 4M N11 8N 6N 2N 1N 1P 2P 6P
	VREG_MSMP_2.6V		1A1 2A1 3A1 A14 5A1 6A1 7A1 8A1 9A1 01A1 11A1A121
	VREG_MSMP_2.6V
	R308	R309
RESET_N	TP337	F14	RESIN_N
RESET_N		F14	RESIN_N
RESOUT2_N		F12	RESOUT_N
CAM_EN1	TP329	L19	RINGER
W_DOG	TP329	AE17	WDOG_EN_1
W_DOG		AF17	WDOG_EN_2
		AF17	WDOG_EN_2
TMODE0	TP303	Y23	MODE0
TMODE1	TP303	AA25	MODE1_1
		AA26	MODE1_2
		U25	MODE1_2
TMODE2		U25	MODE2_1
		U26	MODE_2
		AE21	BOOT_MODE_1
		AF21	BOOT_MODE_2
		A18	TCXO

7-4

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This Document can not be used without Samsung's authorization

notice without change may Contents-Proprietary SAMSUNG

authorization Samsung's without used be not can Document This

VREG_MSMP_2.6V

R504

CAM_D(7)

CAM_D(5)

CAM_D(3)

CAM_D(1)

CAM_VSYNC

I2C_SDA

CAM_MCLK

CAM_RESETB

C_WHITE_LED_EN

C_MAIN_LCD_RESETB C_MAIN_LCD_CSB C_WE2_N

5-7

				MEGA_2.5	VBATT


						05L
					1



			C510						C511
		ZD504
U512									CN505		2

								1
	EAR1OP_CON								1	2
	EAR1OP_CON								1	2
								3	3	4	4
								5	5	6	6
							7		7	8	8
								9	9	10	10
						11			11	12	12
						13			13	14	14
U513						15			15	16	16
						17			17	18	18
						19			19	20	20
						21			21	22	22
						23			23	24	24
						25			25	26	26
						27			27	28	28
						29			29	30	30
								31	31	32	32
					33				33	34	34
								35	35	36	36
								35	35	36	36
								37	37	38	38
								37	37	38	38
								39	39	40	40
								39	39	40	40
								41	41	42	42
								41	41	42	42
								43	43	44	44
								43	43	44	44
								45	45	46	46
								45	45	46	46
								47	47	48	48
								47	47	48	48
								49	49	50	50
								49	49	50	50
								51	51	52	52
								51	51	52	52
								53	53	54	54
								53	53	54	54
								55	55	56	56
								55	55	56	56
								57	57	58	58
	U506				59				59	60	60

D2(15)	1	IN	OUT 16
D2(13)	2	IN	OUT 15
D2(13)			OUT 14
D2(11)	3	IN	OUT 14
D2(9)	4	IN	OUT 13
D2(9)			OUT 12
D2(7)	5	IN	OUT 12
D2(7)			OUT 11
D2(5)	6	IN	OUT 11
D2(3)	7	IN	OUT 10
D2(1)	8	IN	OUT 9
D2(1)			GND
			GND
			17

VREG_MOTOR_3.3V VREG_MSMP_2.6V

MEGA_1.8

205L

C508	C509	ZD508	ZD509		VREG_MSMP _2.6V
			ZD505		R503
		Cu	Cu
		1050pmal	1050pmal		CAM_D(6)
		H	H		CAM_D(4)
					CAM_D(4)
				EAR1ON_CON	CAM_D(2)
				EAR1ON_CON	CAM_D(0)
				LCD_HALL_SW	CAM_D(0)
				LCD_HALL_SW
					U514
				FLASH_ON

CAM_HSYNC

I2C_SCL

CAM_PCLK

MEGA_SLEEP

						U516
				C_SUB_LED_EN
				C_SUB_LCD_RESETB
				C_SUB_LCD_CSB
				C_A2(1)
		17						17
		GND
				D2(14)				GND
9	OUT	IN	8		C_WE2_N	9	OUT		8	WE2_N
10	OUT	IN	7	D2(12)				IN
					C_A2(1)	10 OUT		IN	7	A2(1)
11	OUT	IN	6	D2(10)
					C_WHITE_LED_EN	11 OUT		IN	6	WHITE_LED_EN
12	OUT	IN	5	D2(8)						MAIN_LCD_RESETB
					C_MAIN_LCD_RESETB	12 OUT		IN	5
13	OUT	IN	4	D2(6)
					C_SUB_LCD_RESETB	13	OUT	IN	4	SUB_LCD_RESETB
14	OUT	IN	3	D2(4)	C_SUB_LED_EN
						14	OUT	IN	3	SUB_LED_EN
15	OUT	IN	2	D2(2)	C_SUB_LCD_CSB
						15	OUT	IN	2	SUB_LCD_CSB
16	OUT	IN	1	D2(0)
					C_MAIN_LCD_CSB	16	OUT	IN	1	MAIN_LCD_CSB

		U507
								U511
										Troubleshooting of Chart Flow

Flow Chart of Troubleshooting

7-3. SIM Part

Phone can't access SIM Card

Yes

CN401 pin 1 = "H"?

Yes

After Power ON,

Check SIM_CLK Signal on

CN401 pin3 in a few second

It is 3.84MHz?

Yes

After SIM card insert,

CN401 pin 2 = "H(USIM_RST)"?

Yes

Check the SIM Card

Yes

END

Check the SIM POWER

Check the 32.768KHz OSC(XTAL 401)

19.2Mhz(OSC201)

Replace PBA

7-6

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

SIM

AMUX_OUT

REF_OUT

C410

C411

USB_OE_N

USB_DAT

D401

USB_SEO

TP402

USB_D_P

PS_HOLD

USB_D_M

S-

8 7 6 5

VREG_USIM

8 7 6

JIG_DETECT

1H02- 43NC8ADC--

1 2 3

211 1019

USIM_IO

R410

390

R411

R412

RESET_N

SIM_IO

P 1 2 3

SIM_CLK

USIM_CLK

USIM_RST

SIM_RST

PMIC_SBDT

PMIC_SBCK

C440

C439

C441

C442

PMIC_SBST

KEY_PRESSED

PM_INT_N

C443

C444

100NF

Q403

U407

R413

6 KCO

CCV

HFK_DETECT

DGN

MSI

R440

Q404

U409

R408

4 GND OUT 1

3 NC

VDD 2

R409

ON_SW

72	AMUX_IN2	REF_ISET
82	AMUX_OUT	REF_BYP
80	REF_OUT	REF_GND
13	USB_OE_N	FLSH_DRV_N
17	USB_DAT	GP1_DRV_N
19	USB_SE0	LCD_DRV_N
11	USB_ID	KPD_DRV_N
18	USB_D_P	VIB_DRV_N
20	USB_D_M	SPKR_IN_P
24	KPDPWR_N	SPKR_IN_M
57	PS_HOLD	SPKR_OUT_P
66	CBL1PWR_N	SPKR_OUT_M
68	CBL0PWR_N	SPKR_BYP
9	PON_RESET_N	VDD_SPKR
30	RUIM_M_IO
26	RUIM_IO
34	RUIM_M_CLK	VDD_MSMC
38	RUIM_CLK	VDD_MSME
40	RUIM_M_RST	VDD_RUIM
43	RUIM_RST	VDD_MSM
47	SBDT	VDD_ANA
49	SBCK	VDD_WLAN
51	SBST
59	MSM_INT_N	VDD_MAIN
	DNG	CN CN
	58	68 78

R439

JIG_DETECT

JIG_ON

7-7

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-4. Speaker Part(Melody)

Speaker does not work

Yes

U603 pin28,29 = 3.0V?

Yes

Check the Clock signal at Pin 2 of U603 (19.2MHz)

Yes

U603 pin 3 2.6V? (When U302 operate)

Yes

U603 pin 14,23Battery Volt ?

Yes

Is Speaker working?

Yes

END

Resolder or replace U602

Check the clock generation circuit (related to U401 and U603)

Resolder U302

Check the circuit related to "SPOUT1/SPOUT2" signal

Change the Speaker

7-8

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Flow Chart of Troubleshooting

Speaker

SPK_TP1

24-8005-002-000-867 CN604-2 24-8005-002-000-867 CN604-1

SPK_TP2

D2(0:7)

A2(1)

MELODY_CSB

WE2_N

OE2_N

TCXO_OUT

MELODY_RESETB

R616

C630

C632

L605

L603

C635

4V06

306 V

5.6V

HPH_L

YAMAHA_EARJACK_L YAMAHA_EARJACK_R

)0(2	)1(2	)2(2	)3(2	4(2)	52)(	)62(	)7(2
D	D	D	D	D	D	D	D

MEL_VCC

51 50 49

CNCNDN G

DDV OI

SSV

_RD

CLKI

_IRQ 35

MELODY_IRQ

_RST

PIO0 34

TESTI

PIO1 33

PLLC

U603

PIO2 32

MEL_VCC_3V

VDD

LED 31

VSS

MTR 30

C629

IOVDD 29

39PF

VREF

C633

VDD 28

SPOUT2-L

SPOUT2-R

L602

24-8005-002-000-867

CN603-2

SPOUT1-L

SPOUT1-R 26

L604

24-8005-002-000-867

LSSVPS

LDDVPS

LQE3-

LQE2-

LQE1-

LT/- UOHP

RTUOHP

RQ1-E

RQE2-

RQE3-

RDDVPS

RSSVPS

NC 25

1V06

206V

CN603-1

C636

VBATT

39PF

5.6V

C637

C690

C638

C671

C692

C691

146

246

C639

C640

C644

C643

R624

R623

HPH_R

C645

C646

R627

R628

7-9

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-5. Microphone Part

Microphone does not work

Yes

Check the connection

Resolder MIC

from MIC

Yes

Check the circuit

Resolder the R607, R608, R631, R632, R633,

from U302 to MIC

R634, C614, C615, C621 and C622

Yes

Check the MIC

Replace the MIC

Yes

END

7-10

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

Microphone

MICBIAS

		C694	R608
		C694
			C614
MICP_CON		R633
MICP_CON
C683	C618		C621
C683	C618
MICN_CON		R634
MICN_CON
			R611

C623 C612 C686 C682

MICBIAS

C616 C617

C693

R607

EARMIC_P	R631	C615
EARMIC_P
C684	C685
EARMIC_N	R632	C622
EARMIC_N

R612

C687 C688

C610 C624

MIC1P

MIC1N

MIC2P

MIC2N

7-11

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Flow Chart of Troubleshooting

7-6. Key Data Input

Check Initial Operation


	Yes

		No
		No
When one of the keys is			Check the Dome sheet & Key Pad
pushed,			Check the Dome sheet & Key Pad
pushed,
is it displayed on LCD?
	Yes

When one of the keys is

pushed, Replace the PBA KEY_IO signal is OK?

Yes

END

7-12

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Flow Chart of Troubleshooting

7-7. Receiver Part

Receiver does not work


	Yes
	Yes

		No
Check the soldering of the			Modify the speaker wire soldering
speaker wire
	Yes




		No
Is Receiver working?			Replace the Receiver
Is Receiver working?

Yes

END

7-13

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-8. Back Light (for Color Main LCD)

Backlight does not work


	Yes

		No
		No
Is BACKLIGHT set			Set BACKLIGHT on AlwaysON
AlwaysON in the Menu?

Yes

L501 ≥ 3.3V		Replace or Resolder L501

Yes

Replace the LCD Module

Yes

END

MEGA_2.5 VBATT

5L 10


			C510			C511
			C510			C511
	ZD504
						CN505


EAR1OP_CON					1	1	2	2
EAR1OP_CON					3	1	2	4
					3	3	4	4
					5	5	6	6
				7		7	8	8
					9	7	8	10
					9	9	10	10
		11				11	12	12
		13				13	14	14
		15				15	16	16
		17				17	18	18
		19				19	20	20
		21				21	22	22
		23				23	24	24

7-14

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Flow Chart of Troubleshooting

7-9. Key Back Light

Key Backlight does not work


	Yes
		No


Is BACKLIGHT set			Set BACKLIGHT on AlwaysON
AlwaysON in the Menu?
	Yes




		No
HEA501 pin 20			Replace The PBA Module
Voltage = "3.05"?

Yes

Replace Key_FPCB

Yes

END

7-15

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-10. Camera part

"Camera" function does not work

Yes

Check the Camera connector on LCD module

Yes

CN505 pin28 = 1.8V?

CN505 pin27 = 2.6V?

Yes

U513(pin7) = 24MHz

Yes

Is there another problem?

Yes

Replace the camera module

END

Connect the camera module

Check the voltage of U401 & U502

Replace U302

7-16

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Flow Chart of Troubleshooting

U513

CAM_VSYNC

I2C_SDA

CAM_MCLK

CAM_RESETB

7-17

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-11. GSM Receiver

RX ON

RF input : CH center freq +67.7kHz

Amp : -50dBm

Yes
C118	No
C118		Resolder U106(ASM)
>= -60dBm		Resolder U106(ASM)
>= -60dBm
Yes
L103	No	Resolder F100
L103		Resolder F100
>= -65dBm		(GSM SAW)
Yes
Resolder U104
(RTR6250)
Yes
END
		7-18

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This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-12. GSM Transmitter

TX ON (5 Level)


	Yes	No
	Yes
U105(PAM) Pin45
>= 1V
>= 1V
	Yes


OSC101(TXVCO)		No
pin1
pin1
>= 2dBm
	Yes	No


U105(PAM) pin6
>= 26dBm
	Yes	No


U106(ASM)
pin22
pin22
>= 23dBm

Yes

Check U302

(MSM6250)

END

Resolder U105

(PAM)

Resolder OSC101

(TXVCO)

Resolder U105(PAM)

Resolder U106

(ASM)

7-19

SAMSUNG Proprietary-Contents may change without notice

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Flow Chart of Troubleshooting

7-20

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Flow Chart of Troubleshooting

7-13. DCS Receiver

RX ON

RF input : CH center freq +67.7kHz

Amp : -50dBm

Yes
C125	No
C125		Resolder U106(ASM)
>= -60dBm		Resolder U106(ASM)
>= -60dBm
Yes
L109	No	Resolder F101
>= -65dBm		(DCS SAW)
Yes
Resolder U104
(RTR6250)
Yes
END
		7-21

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-14. DCS Transmitter

TX ON (0 Level)


	Yes	No
	Yes
U105(PAM) Pin45
U105(PAM) Pin45
>= 1V
	Yes


OSC101(TXVCO)		No
pin5
pin5
>= 2dBm
	Yes	No


U105(PAM) pin31
U105(PAM) pin31
>= 23dBm
	Yes	No


U106(ASM)
pin22
pin22
>= 20dBm

Yes

Check U302

(MSM6250)

END

Resolder U105

(PAM)

Resolder OSC101

(TXVCO)

Resolder U105(PAM)

Resolder U106

(ASM)

7-22

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-23

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-15. PCS Receiver

RX ON

RF input : CH center freq +67.7kHz

Amp : -50dBm

Yes
C133	No
C133		Resolder U106(ASM)
>= -60dBm		Resolder U106(ASM)
>= -60dBm
Yes
L116	No	Resolder F102
L116		Resolder F102
>= -65dBm		(PCS SAW)
Yes
Resolder U104
(RTR6250)
Yes
END
		7-24

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-16. PCS Transmitter

TX ON (0 Level)

Yes

U105(PAM) Pin45

>= 1V

Yes

OSC101(TXVCO) pin5

>= 2dBm

Yes

U105(PAM) pin31 >= 23dBm

Yes

U106(ASM)

pin22 >= 20dBm

Yes

Check U302

(MSM6250)

END

No		Resolder U105
		(PAM)

No		Resolder OSC101
		(TXVCO)

Resolder U105(PAM)

Resolder U106

(ASM)

7-25

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-26

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-17. WCDMA Receiver

RX ON

RF input : CH center freq Amp : -50dBm

Yes

C208 >= -60dBm

Yes

C214 >= -65dBm

Yes

C210 >= -55dBm

Yes

C236 >= -60dBm

Yes

Resolder U203

(RFR6250)

Yes

END

Check & Resolder U106

(ASM)

No		Resolder F204
		(DPLX)

No	Check & Resolder U201
	Check & Resolder U201
	(RFL6200)

No		Resolder F201
		Resolder F201
		(WRX SAW)

7-27

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-28

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-18. WCDMA Transmitter

TX ON (PDM for 23dBm)

Yes

C212 >= -7Bm

Yes

C211 >= -7dBm

Yes

U202(WPAM) pin8 >= 20dBm

Yes

C208 >= 19dBm

Yes

C101 >= 19dBm

Yes

END

No	Check & Resolder U104
	Check & Resolder U104
	(RTR6250)

No		Resolder F202
		(WTX SAW)

Check & Resolder U202

(WPAM)

Resolder F204

(DPLX)

No	Check & Resolder U106
	Check & Resolder U106
	(ASM)

7-29

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

7-30

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

Transmitter

RX VCO

CP2

SYNT 2.85V

FAQ2

VREG RTR 2.85V

DAC REF

TX IM

TX IP

TX QM

TX QP

VREG RTR 2.85V

VREG_

C120

C127

C135

L102

C113

C119

PCS RXM

R106

C112

PCS RXP

L108

L114

L115

L120

R115

R102

C102

C108

2930

CP2

FAQ2

VDDA8

VDDA7

GSM1900INP

GSM1900INN

VDDA6

GSM850INP

GSM850INN

DACREF

TX IN

TX IP

TX QN

TX QP

VDDA515

CP_HOLD2

RX14_IN

VDDA9

RX13_IP

RX12_QN

RX_VCO_IN

RX11_QP

R_BIAS

VDDA410

GSM1800_INN

U104

VCO9 _TUNE

353637

GSM900_INP

GSM1800_INP

VTUNE8

_REF

VDDA10

VDDA37

GSM900_INN

TCXO6

VDDA25

VDDA11

VDDA14

TX_MOD_CP

UMTS2100OUT

UMTS1900OUT

UMTS800OUT

FAQ13

VDDA12

VCONTROL

ONRF

VDDA13

VDDA14

VDDA15

VDDA16

VDDA17

GND

NC1 NC2

CP12

C136

SBCK

SBDT

SBST

TX_VCO_FB

CP1_HOLD1

VDDM

58 59

C111

C132

C105

C110

C123

C130 C131

C104

C129

C128

R112

R105

C103

C122

L113

DCS RXM

DCS RXP

GSM RXP

GSM RXM

MOD CP

TXVCO

VREG MSMP 2.6V

VREG RTR 2.85V

SBCK

SBDT

SBST

RF ON TX ON

TX AGC ADJ

UMTS TXRF VREG RTR 2.85V

VREG RFTX 2.85V

GSM RXP

GSM RXM

DCS RXP

DCS RXM

PCS RXP

PCS RXM

L105

L110

L117

L103

L106

L109

L111

L116

L118

OUT

IN GG

F101 B7852

IN GG

F102 B7851

F100

IN G 25

1514

TX1

GND

TX2

L104

C126

C134

L107

L112

L119

NC7

U106

1918

C118

C125

C133

GND

RX1

UMTS_ANT

TRX

RX44

GND

RX33

ANT

CTL-A

CTL-B

CTL-C

NC GND NC GND

RX2

GND

VDD

GND

30 31 32

	C101	33PF
			L101
					C115	C117	C124
KMS-512					R108	R109	R111
G	4				R108	R109	R111
C	3		R104	R107	C114	C116	C121
A	2		R104	R107	C114	C116	C121
	2
G	1				C107
CN101					C107
ANT105		R101	R103	VREG RFRX 2.85V	GSM ANT SEL0 N	GSM ANT SEL1 N	GSM ANT SEL2 N
ANT

ANT104

RX IM

RX IP

RX QM

RX QP

VREG RTR 2.85V

TCXO

C142

L121

C141

C137

R116

R117

C152

C155

C138

C151

C154

C143

L124

2.85V

R118

MOD CP

DCS VCO EN N

GSM VCO EN N

SYNT 2.85V

VREG RFTX _

R122

C161

R130

C164

R135

C169

VREG_

C148

R119

C158

C149

C147

11139

C146

G GG

6 7

VB1

OUT1

OUT2

SW1SW2

2 4

VB2

OSC101

R128

R127

R134

R126

R129

R133

R125

C163

C139

L122

C144

R120

R121

R124

TXVCO

R123

C140

L123

C145

C162

GND

DCS/PCSINGND NC

C153

VCC1DCS/PDCS/PCSOUTS

NC23

C171

3940

VCC2DCS/PCSBANDSEL

GND

NC22

TXENABLE

VCC3DCS/PCS21

4344 42

VBATT

U105

VCCOUT20

VBATT

VCCOUT19

VCC3GSM

VRAMP

NC17

GGNDGND

VCC1GSM

GND

GSM850/900OUT

GND

NC16

C170

48 47

GND

50515249

GND1GSM

NC15

53 54

VCC2GSM

SM850/900IN

NC14

GND

NC13

GND

C168 1NF

C167

C150

C156

C160

R131

C165

C157

C159

R132

C166

GSM BAND

GSM PA PWR SV

VBATT

GSM PA PWR CTL

7-31

SAMSUNG Proprietary-Contents may change without notice

This Document can not be used without Samsung's authorization

Flow Chart of Troubleshooting

		.2 SYNT VREG
		85V
7UF.4			R222


	C257		7.4
	C257		7.4
15PF	C259
100NF	C258
100NF	C258
	2	7		5	OSC202 MQL302A1G71
	2		VCC	VC	OSC202 MQL302A1G71
	G
	8G
	6G
	4
	G
			OUT	SW

1NF

C256

R221

220PF

C254

R216

RFRX VREG

.2_

UHF

C251 33PF

85V

EN VCO

390PF

C253

8PF.1

C260

7nH.4

L213

2K,1%.8

R220

7nF.4

C255

BLM15HG102SN1D

L212

7K.4

R218

100NF

C246

8PF.1

C261

100PF

C247

GND6

3CND

7DNG

FAQ2

CP2

2ADDV1413

OL_MNI

OL_PNI

C252

3ADDV

4ADDV

C248

OL_TUO

5ADDV

DNC4

VCO

C250 C249

L211

C245

85V.2_RFRX_VREG

			ADJ LO TRK
C240 C239	85V.2 TCXO VREG		R214					85V.2 RFTX VREG
C241	OUTVCC 3 4	GNDVCON	C235						RANGE0PA
	OUTVCC 3 4	GNDVCON	2						RANGE0PA
			1
		OSC201
						6	5	4	C227
	TCXO				U204	C1	B2	E2	C227
						E1	B1	C2
						1	2	3
									C228
									11
							PA		DNG
							PA
			SYNT VREG				ON
			.2_
		R213	85V
				HDET
	TH201
	THERM PA			C231	R207
	THERM PA			C231	3		D400	C229	R205
							D400
				2	1
				R209		L207
				R208		L207	R206	.2 RFTX VREG
RXP UMTS	RXM UMTS		RFRX VREG	C232				85V
			.2_
			85V
C242		C236
				L208
	C238
L210	L209		C233
			C234

2CN

DNC2

GND5

INMUMTS

GND4

INPUMTS

GND3

VDDA1

GND2

414243444546

DNC131DGND1G

1CN

41DNG

21DNG

11DNG

7CND

39 40

SBCK

SBST

8ADDV

R_SAIB

U203

6CND

3637

R211

5CND

01DNG

XR_PQ

XR_MQ

GND8

VDDM

SBST

SBCK

SBDT

VDDA6

TCXO

VDDA7

IMRX

IPRX

9DNG

C237

C243

SBST

SBCK

SBDT

TCXO

R212

R210

C244

R215

IM RX

IP RX

QM RX

QP RX

.2 MSMP VREG

TXRF UMTS

C212

C217

GND1

F202 DG50LE0

GND2

OUT

C219 C218

C211

412L

VBATT

VREF

VMODE

GND

RFIN

VCC

U202

GND

RFOUT

9 GND

VCC

C204

C263

C205

L215

C262

C221

IN G1

6 34

G4 G3 G2

OUT

F203

ANT UMTS

GND

ANT

F204

C208

C206

C214

C222

		L206
							C209
		L205
	5	4		3	2	1
					DNC	CN
6	GND	INUMTS		BIASUMTS	DNC	GNDCN		22	R201	C201
6	GND	INUMTS		BIASUMTS	DNG			1920	R201	C201
DNG					DNG			21
DNG					DNG
KCBS					DNG			18
7					DNG			18
TSBS				R_SAIB				17
TSBS	9	10	OUTUMTS	11	12	GND	13	141516	U201 RFL6200
8	9	10	OUTUMTS	11	12	GND	13	141516	U201 RFL6200
					ADDV
	VDDM	SBDT			DNG
	VDDM	SBDT			GND
C224							L202		R202
C225		SBDT								C207 C202
R204
					L203
										L201
6V.2 MSMP VREG		C216 NC			C210					RFRX VREG
										.2_
				1	F201 B7728					85V
		IN G 5 2			F201 B7728
		G
			OUT	OUT
			4	3
			7nH.4	L204
		RXM UMTS			RXP UMTS

7-32

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