Samsung SGH-M8800, GT-M8800 Troubleshooting

10. Flow Chart of Troubleshooting

BASEBAND

10-1

10-1-1.

Power ON

Power On' does not work

'

Check the current consumption

Yes

Current consumption

Check the Vbat Voltage

Voltage

F10(PS_HOLD)=2.6V

check the PMIC output

voltage(C414, C415,

C417, C418, C419

>= 100

>=3.3V

U402 PIN

mA

Yes

)

No

Download again

Charge the Battery

Check the PMIC related to

PS_HOLD

check the PMIC

Yes

check the TCX200

C201=

Check the initial operation

19.2

END

Mhz?

Yes

No

Check the clock generation circuit

relatedtoTCX200

(

)

10-1

Flow Chart of Troubleshooting

< JIG Detect >

JIG_ON

1

TR400

3

2

CLK19.2M_PM

USB_DM_MODEM USB_DP_MODEM

USB_DM_JTAG USB_DP_JTAG

TCXO_FF

C409

C452

JIG_ON_SW

VBATT_4.2V

0603

25V

C456

R402

R403

< Power Management IC >

0 1 K

6 G

S

C 4 0 2

7 L

MI U R _ D D V

D N G

7 G

P

C405

1

4

1

A

3

R

2

K

S

P

_

S

D

_

D

V

D V

VREG_RFUBM

PON_RESET_N

D N G

1 1 D

_

P

T

D

1

1 F

G

V

N

5

A

_

L

G

W

E

S

VREG_GP1

_

R

V

D

V

VREG_GP2

D V

VREG_GP3

VREG_MMC VREG_MSMA VREG_MSME VREG_MSMP VREG_MSMC

VSW_MSMC

VREG_RFRX1 VREG_RFRX2

VREG_RFTX

VREG_RUIM

VREG_S2 VREG_S3

VSW_S2 VSW_S3

VREG_TCXO

VREG_USB VREG_WLAN

ISNS_M ISNS_P

XTAL_IN

XTAL_OUT

SBDT|SSBI

VCOIN BAT_FET_N CHG_CTL_N

VCHG HSET_BIAS

KPD_PWR_N

MSM_INT_N

PS_HOLD

SLEEP_CLK

C

N

D

2

1

R S T _ N

C429

C 4 1 5

V_RF_2.1V

C406

A3 A2 B1

L9

G11

K8 J11 K4 K5

A9 A10 A8 B8 L10

L8

L6 K7 K6

L402

A1 G2 B11

D1 D2

L11 K11

F8

SBCK

G8 E8

SBST

J10 E2 C2 C1 K1 L4 C10 G10 F10

K9

C 4 2 0

C400

10V

AMUX_OUT

JIG_ON_SW

BT_TCXO_EN

CLK19.2M_TCXO

0603

BT_TCXO_OUT

0603

USB_VBUS_5V

C401

SIM_RST

USIM_RST

SIM_CLK

USIM_CLK

SIM_IO

USIM_IO

REF_OUT

TCXO_EN

USB_DAT

USB_OE_N

USB_SEO

V_RF_2.7V

10V

C453

1005

C454

C404

C402

C403

TP_AMUX_OUT

C412

C431

C457

1005

C345

C341

C 3 3 1

C 3 5 0

C 3 5 5

C354

R 3 2 3

R 3 1 3

C300

C 3 5 7

C 3 3 7

T

U

_

O

X

U

M

_

A

10V

1

9

2

3

1

5

1

L

E

B

H

T

F

P

NI

C

M

A

R

G

S

M

A

_

B

S

M

D

V

D

_

M

_

D

_

D

V

A7

D

MPP1|AMUX_IN1

V

D

V

B7 K3

L3 L1 L2

D7 H7 D6 H6 D5 H5

K2 B4

D4 H8

C11

E10

D10

1005

R400

B5 B6 A5 A6

D8 E4

E11 H10 B10

F11

G4

J1

J2

H2

F4

F2

H4

H1

R408

0603

C 3 2 5

C 3 5 3

C 3 5 6

R 3 2 5

R 3 0 0

C 3 5 8

C 3 3 8

P

T

C 4 1 4

MPP2|AMUX_IN2 AMUX_OUT

MPP3|VIB_DRV_N MPP4|LCD_DRV_N KPD_DRV_N

MPP7|CBLPWR_N MPP8|REF_OUT

OPT_1 OPT_2

REF_BYP REF_GND REF_ISET

SPKR_IN_M SPKR_IN_P SPKR_OUT_M SPKR_OUT_P

TCXO_EN_1 TCXO_EN_2 TCXO_IN TCXO_OUT_1 TCXO_OUT_2 TCXO_OUT_RF

USB_DAT USB_D_M USB_D_P USB_ID USB_OE_N USB_OVP_G USB_SE0 USB_VBUS

C305

C330

C324

C 4 3 3

TP_RESETOUT_N

C 4 1 6

C457

C454

V

U402

D

N

G

5

7

6

5

6

7

F

E

G

L

D

O

_

H

T P _ B O O T _ S W

0

4

0

R 4 1 1

R 4 0 6

C 4 0 9

C401

R408

L 4

0

C 4 2 2

0

C 4 2 3

R401

0603

TP_PM_INT

3 0 6 0

R411

5 0 2

C407

L400

VBATT_4.2V

C453

L 4

0 2

C408

TP_RFUBM

L401

TP_SLEEP_CLK

R407

C437

R504

R 5 0 3

C 4 0 4

C 3 6 5

SSBI2_DATA PMIC_SBST

ON_SW PM_INT_N RESET_N

SLEEP_CLK

C438

C452

1005

1 9

U 4

0 2

3

1

POS

NEG

2

R424

C408

C 4 2 6

C 4 2 7

1

2

OSC400

2

1

D400

BAT400

C407

C413

C432

TP_PS_HOLD

PS_HOLD

BOOT_SW

I

T

N

TP_RFUBM

V_MSMA_2.6V

_

M

_

P

T

C400

C 4 0 3

C 4 2 5

V_MSMP_2.6V

C417

C433

R 4 0 1

V_MSME_1.8V

VEXT_5V

C456

C 4 2 4

WPAM_BIAS_2.85V

R424

1005

C419

C420

3 0 6 0

R406

C319

C318

C 4 3 0

C412

L 4

0 1

V_USIM_3.0V

C421

R 4 0 0

C431

C417

O S

C 4 0 0

C418

V_MSMC_1.2V

C414

C 4 0 5

V_RF_2.1V

C422

C424C418

C423

C 5 0 1

C 4 2 8

C 4 3 2

C 4 1 3

C 4 0 6

C 4 2 1

V_TCXO_2.85V

V_MMC_2.85V

V_BT_2.6V

C415

V_FEM_2.7V

C430

C429

C428

C416

V_RF_2.7VVBATT_4.2V

C425

C426

C427

10-2

Flow Chart of Troubleshooting

10-1-2.

Sim Part

Insert SIM"is displayed on the LCD

"

Yes

Check the SIM connector's

SIM

(

pin#1(C442) of SIM

pin#2,#3,#4of SIM

connection to

400) SIM card

Yes

Check the voltage at

3.0V ?

Is there any signals

400 >=

Yes

400 ?

No

Resolder or change SIM

Check the PMIC

400

Yes

Check the SIM Card

END

10-3

Flow Chart of Troubleshooting

< USIM Connector >

V_USIM_3.0V

USIM_RST USIM_CLK

USIM_IO

C 4 4 3

C439

C443

SIM400

11

22

33 4

G

910

6

5

4

G78GG

R413

1005

4

3

6

C 4 4 2

1

5

2

C439

ZD401

C441

C442

R413

4

0

1

D

Z

C 4 4 1

SIM400

10-4

Flow Chart of Troubleshooting

10-1-3.

Charging Part

Abnormal charging part

C434 at USB_5V or

C435 at EXT_5V=5V?

When U401 is charging,

U401 pin

Check the battery&TA

Yes

#4 = "L"?

Yes

No

Resolder U402

Replace U401

Check the PMIC

END

Yes

10-5

Flow Chart of Troubleshooting

< Charging IC >

CHG_INDICATE

CHG_EN_N

R404

R409

R405

R410

C436

3 0 6 0

R423

VEXT_5V

USB_VBUS

3 0 6 0

C434

1

C435

1

2

3

4

5

0

CRDL

USB

_PPR

_CHG

_EN

GND 11

4

U401

USBON

BAT

ICDL

GND

IMIN

R409

U

VBATT_4.2VV_MSME_1.8V

10

9

8

7

6

5 0 0 1

R405

C436

R410

1005

1%

USB_VBUS_5V

0603

R404

C434

C435

10-6

Flow Chart of Troubleshooting

10-1-4.

Microphone Part-PHONE Mic

Normal Microphone does not work

Yes

Is the assembled status of

Normal mic ok?

Yes

Is the DC bias voltage on Normal MIC path at C560

Is the Normal Mic path

component soldering status

1.8

V?

Yes

ok

?

No

Reassemble the Normal mic

No

Check the path around Noraml MIC bias circuit

No

Resolder the trouble point

Yes

Is Normal microphone ok?

END

No

Replace the MIC

10-7

Flow Chart of Troubleshooting

MIC1_N

MIC1_P

REC_MIC1_P

C537

C540

C558

C559

R519

C560

V_MICBIAS_1.8V

1 2 3 4

MIC500

POWER

GND

GND1

GND2

GND

OUT

C102

C 1 0 5

C

5

8

9

C

R

5

6

1

0

9

C 1 0 6

C842

U100

C109

L131

L 1 1 2

L 1 0 7

L 1 1 0

L114

10-8

Flow Chart of Troubleshooting

10-1-5.

Speaker part

There is no sound from the speaker

Is the Normal Mic path

component soldering status

Is there any signals at the pin#B3(R508),#C3(R507)

Is there any signals at the

pin#B5(R502) of U502

ok

?

of U502?

Yes

No

Resolder the trouble point

No

?

Check the MSM6281

Check the U502

Change the speaker module

END

10-9

Flow Chart of Troubleshooting

AUDIO_CTRL

CODEC_SPK_N

CODEC_SPK_P

C515

C516

< Mono Class-D AMP >

V_MSMP_2.6V

U504

1

CB1

2

NO1

3

GND

4

NO2

5

CB2

COM1

VCC

COM2

10

9

NC

8

7

NC

6

AUDIO_P C519

C511

AUDIO_N

HPH_L

HPH_R

VBATT_4.2V

AMP_I2C_SDA AMP_I2C_SCL

V_MSMP_2.6V

R508R507

CODEC_EAR_L

RADIO_OUT_L

RADIO_OUT_R

CODEC_EAR_R

AUDIO_P AUDIO_N

C527

C529

C530

C531

C524

TA500C505

D4

RXIN-

B4

RXIN+

D2

INA1

D1

INA2

C2

INB1

C1

INB2

B2

BIAS

B3

SDA

C3

SCL

U502

3 D

C504

C506

R502

1

5

B

C

D

V

V P

D5

OUT-

B5

OUT+

A1

HPR

A2

HPL

A4

C1N

A5

C1P

1

C520

NC

2

NC

D

N

S

N

S

G

V

G

P

3

4

A

C

C526

C513

C 5 1 2

R 5 0 5

C

3

5

0

2

8

C303

R505

C513C512

R509

0 1 5

R511

R

C

5

0

2

4

5

0

2

U

R

5

0

1

9

0

1

R

C528

C525

C 5 2 5

AMP_SPK_N

AMP_SPK_P

EAR_R

EAR_L

T

C

R507

C352

C351

3

R314R315

3 4

R508

C335

C454

U

_

O

X

U

M

_

A

P

T

C 4 1

L

4

4 0 0

C

4

2

3

2

10-10

Flow Chart of Troubleshooting

10-1-6.

Receiver part

There is no sound from the receiver

Is there any signals at the

Is the assembled status of

Change speaker module

Yes

ZD500),

#5(

of SLC500?

speaker module ok?

#6(

Yes

ZD501)

Yes

No

check the MSM6281 or connector

No

Reassemble the speaker module

END

10-11

Flow Chart of Troubleshooting

< Speaker / Receiver CON >

AMP_SPK_P AMP_SPK_N

RCV_P

RCV_N

C548 C549

N _ K P S _ P T

C550

C548

C550

C551

C541

Z D 5 0 3

Z D 5 0 2

ZD500

ZD502

C542

C551

C549

TP_SPK_P

TP_SPK_N

ZD503

ZD501

P _ K P S _ P T

C542

C541

ZD500ZD501

1 2 3 4 5 6 7 8

SLC500

1 2 3 4 5 6 NC NC

10-12