Samsung SGH-S5600B, GT-S5600B TSHOO

9. Flow Chart of Troubleshooting

9-1-1. Power ON

'Power On' does not work

Check the current consumption

Yes

Current consumption >= 100mA

Yes

Check the Vbat Voltage

Voltage >=3.3V

Yes

Pin#3 of D400 is high?

Yes

Check the PMIC output voltage (C403, C404,

C419, C423, C427,

C428)

Yes

Check Pin#3 of OSC200

is 19.2MHz?

Yes

Check the initial operation

END

No

Download again

No

Charge the Battery

No

Check D400

No

Check U400

No

Check the clock generation circuit (related to OSC200)

9-1

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Flow Chart of Troubleshooting

USB_VBUS

USB_VBUS

VREG_MSMC

VREG_RF_S2

VREG_RF_S3

BATT_MON

C400

C401

C402

L403

L400

R400

R401

L401

R402

L402

R403

VBATT

VBATT

R404

C407

C403

C404

C405

C408

VREG_RF_S2

C406

C409

C410

IN1

A B N T TABT TABT OMABTT EDABTT

ACAV BCAV ASUBV BSUBV

FB2

R405

FB1

IN2

FB3

IN3

U400

IN4

LX1

IN5

LX2

VREG_MSME

VREG_MMC

VREG_MOTOR

VDD_TOUCH

VREG_RFTX

VREG_MSMP

IN6

LX3

IN7

REF_AUDIO

VREG_USIM

VREG_TCXO

VREG_BT

VREG_MSMA

IN8

REF_OUT

IN9

REF_OUT

C413

C414

IN10

REF_PMIC

IN11

C415

C411

C412

SIM_CLK_PMIC

INV1

SIM_CLK

INV2

SIM_DATA

SIM_IO

SIM_IO

SIM_IO_PMIC

OUT1

SIM_RST

SIM_RST_PMIC

R406

OUT2

TCXO

TCXO_OUT

OUT3

TCXO_IN

OUT4

TCXO_OUT

BT_TCXO_OUT

R408

OUT5

VCOIN

R407

OUT6

VICHG

OUT7

VICHG

VREG_RF_S2

OUT8

OUT9

XIN

OUT10

XOUT

C416

C417

C418

OUT11

SIM_CLK

BAT400

OUT12

CLK_IN

OUT13

N32KHZ

SLEEP_XTAL_IN

C431

C432

OUT14

R409

C419

C434

C420

C421

C422

C423

C424

C425

C426

C427

C428

C429

C430

HPH_L

LINE_IN1

RST_IN

SIM_RST

HPH_R

LINE_IN2

AMP_EN

C433

LINE_IN3

AMP_EN

LINE_IN4

BUCK3_EN

LDO5_EN

LINE_OUT_N

LDO5_EN

BT_TCXO_EN

C435

LINE_OUT_P

LDO6_EN

LDO13_EN

LINE_ON

PS_HOLD

VOICE_IN_N

LINE_OP

VOICE_IN_P

PWRHOLD

PHONE_ON

BOOT_SW

C436

PWRON

R412

R411

SPKR_BP_N

HFPWR

JTAG_ON

D400

R410

C437

SPKR_BP_P

VL

CN

SE0

USB_SEO

R413

CP

DAT

USB_DAT

PM_I2C_SCL

USB_EAR_L

SCL

Q400

HS_L

SDA

PM_I2C_SDA

USB_EAR_R

R415

R414

HS_R

NEG

C438

JTAG_ON_IF

SPK_N

LS_N

PMIC_INT

NIRQ

SPK_P

R417

R416

LS_P

NOE

USB_OE_N

VREG_MSMP

R419

USB_D_M

USB_DN

NRESET

PM_RST_N

R420

USB_D_P

R418

USB_DP

NC

DN1 DN2 DN DN1 DN2 DN3 DN4 GA GA GD GP GP GP GP

DN5 GP

NC

C439

R421

9-2

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Flow Chart of Troubleshooting

9-1-2. Charging Part

Initial Failure
	Yes
Check the Battery & TA ?						No
	Yes
5.0V @ C605		?				No

Yes

No

High @ C417 ?

Yes

Is charging working?

Yes

END

Reinsert the Battery & TA

Check the IFC600

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

Check the U400

Replace the U400

9-3

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Flow Chart of Troubleshooting

9-1-3. Sim Part

"Insert SIM is displayed on the LCD

Yes

Check the SIM connector's (SIM400) connection to SIM card

Yes

Check the voltage at pin#1 of SIM400 >= 3.0V ?

Yes

Is there any signals pin#2,#3,#4 of SIM400 ?

Yes

Check the SIM Card

No

Resolder or change SIM400

No

Check the U400

No

Check the U400

END

9-4

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Flow Chart of Troubleshooting

9-1-4. Microphone Part - Main MIC

Microphone does not work

Yes

Check the connection

No

of MIC(MIC500)?

Yes

Check the reference voltage on MAIN-MIC path

Yes

1.8V @ TA300?

No

Yes

Check the circuit

No

of Main MIC PATH?

Yes

No

Is microphone working?

Yes

END

MICBIAS

MIC500

L509

MICP_DOWN

OUT

MIC_DOWN_GND

GND2

C514

C522

GND1

POWER

R503

	MICBIAS
	R500
	C507
	C518
MIC_DOWN_GND
	C509		L503
MIC1_N			MICP_DOWN
MIC_SEL	U500	MIC1_P	C523
MIC_UP_GND	C508	MIC_SEL

MICP_UP

C521

Resold a microphone

Check UCP300

Resolder L503, L509, C508, C509

Check the path around MIC_BIAS circuit or replace a microphone

9-5

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Flow Chart of Troubleshooting

9-1-5. Microphone Part - Sub MIC

Microphone does not work

Yes

		Check the connection	No
		of MIC(MIC501)?
		Yes
Check the reference voltage on Sub-MIC path
		Yes
		1.8V @ TA300?	No
		Yes
		Check the circuit	No
		of Sub MIC PATH?
		Yes
		Is microphone working?	No
		Yes
		END
		MICBIAS
	L502	L500	MIC501
MICP_UP
			OUT
		MIC_UP_GND	GND2
			GND1
			POWER
C502		C503
		C505	R504

	MICBIAS
	R500
	C507
	C518
MIC_DOWN_GND
	C509		L503
MIC1_N
MIC_SEL	U500	MIC1_P	C523
MIC_UP_GND	C508	MIC_SEL

MICP_UP

C521

Resold a microphone

Check UCP300

Resolder L500, L502, L503, C508, C509

Check the path around MIC_BIAS circuit or replace a microphone

MICP_DOWN

9-6

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Flow Chart of Troubleshooting

9-1-6. Microphone Part - Earphone MIC

There is no sound(VOICE) from the Earphone

Yes

IIs	the Headset O.K?	No
				Change the Headset

			Yes
Check the reference voltage on Ear-MIC path
			Yes
		1.8V @ TA300?		No	Check UCP300
			Yes
	Is there any signals at			No	Check the path	around MIC_BIAS circuit or
			L506		Earphone MIC path.
			Yes
	Check the IFC600
			Yes
			END
MICBIAS
R501
TA500	C520
R502
			C513
USB_EARMIC				MIC2_P
L506
				C511
	C515	C506	C517	MIC2_N

	MICBIAS
	R500
	C507
	C518
MIC_DOWN_GND
	C509		L503
MIC1_N			MICP_DOWN
MIC_SEL	U500	MIC1_P	C523
MIC_UP_GND	C508	MIC_SEL

MICP_UP

C521

9-7

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Flow Chart of Troubleshooting

9-1-7. Receiver Part

There is no sound from the Receiver

Yes

Is there any signals at L800 and L801?

Yes

Is the terminal of Receiver

O.K ?

Yes

END

No
		Resolder L800	and L801
		or Check the	UCP300

No

Replace the Receiver

	L800
RCV_P
	L801
RCV_N
C805	C806

RCV

708D Z

808D Z

9-8

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Flow Chart of Troubleshooting

9-1-8. Speaker Part

There is no sound from the Speaker

Yes

Is there any signals at C435 and C436?

Yes

Is there any signals at L802 and L803?

Yes

Is the terminal of Speaker

O.K ?

Yes

END

	No
			Resolder C435	and C436
			or Check the	UCP300

No		Resolder L802 and L803
		or Check the U400

No

Replace the Speaker

9-9

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