SM-G955F_Tshoo_7.pdf

8. Level 3 Repair 8-1. 8-1. Compo Compo nents Layout

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6 0 2 T N A

2 0 4 T N A

1 0 2 T N A

V204

V200 L206

L244L245 1 5 2 L 4 0 2 L

ANT403

C201

0 3 5 2 0 L 3 2 4 2 U L

ANT208

9 0 2 T N A

ANT203

ANT802 ANT802

ANT803 ANT803

5 1 8

4 5 0 0 3 0 1 0 0 8 2 8 2 8 8 8 C D 2 D 2 L V Z C Z C

V206

4 0 7 3 0 0 8 8 8 C L V

2 1 2 T N A

L212 C203

8

L203 0

7 0 2 L 6 8 2 C

0 0 2 L P C

V7005

V210

2 L 4 0 0 3 2 2 C L

0 0 2 L 9 0 2 L

F204

V203 7 1 2 L

2 0 2 C 6 4 2 C 4 1 2 L 5 4 2 C

3 0 2 F

3 8 7 0 1 1 1 2 5 2 2 2 2 9 L C C L 2 C

F202

0 5

L216 2 C

1 0 2 F206 F

2 5 2 3 2 2 C L

L239L240

8L219 3 2 0 3 L 1 3 4 4 L C

L411

U407

L409C434

ANT211

V209

F207 L258

CN300

6 5 3 2 4 4 C C

F205 C432

0 9 6 5 2 2 L L

CON301

L1007 ZD1002 6 8 0 0 0 0 1 1 C C

L1001 9 0 0 1 C

ANT303

ZD1003 ZD1004 ZD1005 ZD1006

ANT306

HDC1000

ZD1001

1 1 0 1 C 2 3 0 1 C 1 3 0 1 C 0 3 0 1 C 9 2 0 1 C

ANT305 ANT304

2 4 1 1 4 4 L L

TP400

C403

5 7 4

2 1 0 6 6 0 3 3 3 C C D Z 3 2 0 0 3 3 L L

V302 4 0

8 9 2 6 7 7 4 5 3 6 9 3 1 2 9 8 0 7 1 3 0 0 ZD323 3 3 3 0 2 1 1 1 0 0 1 1 0 3 3 3 3 3 3 3 D 3 C R 0 3 3 3 3 2 R D D D D D D 3 C Z R 4 3 R C Z Z Z Z Z Z C R 2 4 3 3 0 4 5 0

3 1 V 2 5 0 3 4 3 3 D 3 C R Z R

0 3C333 C332 V

3 D 3 3 3 Z R C R

C331 C330

C343 C318

C7165

2 0 3 T N A

7 2 2 7 C

3 2 0 7 U

4 6 1 7 C

1 0 0 7 A T

1 3 0 0 3 3 V V

V205 7 0 2 T N A

3 6 4 2 5 0 0 0 0 0 3 3 3 3 3 D D D D D Z Z Z Z Z

0 3 1 9 2 1 1 1 0 1 3 3 3 3 3 R R R R R

L1009C482 C481

7 1 4 U

0 R335 0 0 4 4 4 C342 C C C TP7007TP402 TP410 C413 C406

TP406

2 3 3 3 0 0 5 5 R R

0 0 4 U C483 C414

0 0 4 R 1 0 4 R 2 0 4 C

V7002 V7008

V207 2 0 2 T N A

TP408

R405 R404

4C7112 0TH7000 1 3 7 0 1 C 7 C

0 6 1 7 C

9 3 5 2 1 1 2 4 4 7 C L L

C400

C7102 C5003C5004

9 5 0 6 C

TP7017

0 8 0 5 R

5 8 2 3 3 6 1 0 0 7 6 6 C C C

8 1 0 7 U

5 9 5 4 8 8 3 1 0 0 0 2 6 6 6 7 C C C C

TP401

TP447 TP403

TP409 TP407 TP448TP454 TP445

L7017 C7108

L7015

R5096 R 5 0 0 7 R5095 R 5 0 0 6

TP424 TP428

C7109

4 9 1 9 0 0 7 7 L C

V211

0 1 0 0 4 4 L C

C7110

C7105

0 1 1 2 2 2 2 0 0 7 C 7 7 L L

C7022

0 2 3 D Z 4

R7051

0 2 R 3 9

R7016 TP905 0 3 R5045

TP907 C 1 6 3 TP446TP908 3 C TP906

3 R

C982

0 3 1 7 C

TP904

R7007 R7019

1 6 1 7 C 3

5

1 0 3 T N A 0 0 3 T N A

C7159 9

CC955

C903

C951 C958 4 5 9 C

U904

3 2 0 5 R 4 2 0 5 R 2 6 0 5 R 9 7 0 5 R

1 0 3 6 7 5 3 1 0 6 7 8 6 8 5 8 5 0 3 5 0 0 0 0 0 5 0 0 0 0 0 6 6 5 9 6 6 6 6 5 6 0 R C C 5 C C C C C C C R

SC6004

TP7015 TP7016 6 1 0 7 C

ANT213

5 0 0 7 T N A

ANT7004

2 0 4 F

UCP500

C952 C957

TP903

C6086

3 5 0 6 C 2 0 0 5 C 5 0 0 5 C 1 0 0 5 V 1 4 0

6 0 2 T N A

2 0 4 T N A

1 0 2 T N A

V204

V200 L206

L244L245 1 5 2 L 4 0 2 L

ANT403

C201

0 3 5 2 0 L 3 2 4 2 U L

ANT208

9 0 2 T N A

ANT203

ANT802 ANT802

ANT803 ANT803

5 1 8 4 5 0 0 3 0 1 0 0 8 8 8 2 8 2 8 C D 2 D 2 L V

V206

Z C Z C

4 0 7 3 0 0 8 8 8 C L V

2 1 2 T N A

L212 C203

8

L203 0

7 0 2 L 6 8 2 C

0 0 2 L P C

V7005

V210

2 L 4 0 0 3 2 2 C L

0 0 2 L 9 0 2 L

F204

V203 7 1 2 L

2 0 2 C 6 4 2 C 4 1 2 L 5 4 2 C

3 0 2 F

3 8 7 0 1 1 1 2 5 2 2 2 2 9 L C C L 2 C

F202

0 5

L216 2 C

1 0 2 F206 F

2 5 2 3 2 2 C L

L239L240

F205 C432

8L219 3 2 0 3 L 1 3 4 4 L C

L411

U407

L409C434

ANT211

V209

F207 L258

CN300

6 5 3 2 4 4 C C

0 9 6 5 2 2 L L

CON301

L1007 ZD1002 6 8 0 0 0 0 1 1 C C

L1001 9 0 0 1 C

ANT303

ZD1003 ZD1004 ZD1005 ZD1006

ANT306

HDC1000

ZD1001

1 1 0 1 C 2 3 0 1 C 1 3 0 1 C 0 3 0 1 C 9 2 0 1 C

ANT305 ANT304

2 4 1 1 4 4 L L

TP400

C403

5 7 4

2 1 0 6 6 0 3 3 3 C C D Z 3 2 0 0 3 3 L L 6 7 7 3 0 3 0 3 D 3 C Z R 1 3 3 0 2 5 0 3 4 3 3 D 3 C R Z R

V302 4 0 3 V

8 9 2 4 5 3 6 9 3 1 2 9 8 0 7 1 ZD323 3 3 3 0 2 1 1 1 0 0 1 1 0 3 3 3 3 3 C R 0 3 3 3 3 2 R D D D D D D 3 4 3 R C Z Z Z Z Z Z C R 2 4 3 4 5 0 0 D 3 3 3 3 C333 C332 C343 C318 Z R C R

C331 C330

V

C7165

2 0 3 T N A

7 2 2 7 C

3 2 0 7 U

4 6 1 7 C

1 0 0 7 A T

1 3 0 0 3 3 V V

V205 7 0 2 T N A

3 6 4 2 5 0 0 0 0 0 3 3 3 3 3 D D D D D Z Z Z Z Z

0 3 1 9 2 1 1 1 0 1 3 3 3 3 3 R R R R R

L1009C482 C481

7 1 4 U

0 R335 0 0 4 4 4 C342 C C C TP7007TP402 TP410 C413 C406

TP406

2 3 3 3 0 0 5 5 R R

0 0 4 U C483 C414

0 0 4 R 1 0 4 R 2 0 4 C

V7002 V7008

V207 2 0 2 T N A

TP408

C400

L7015

C7102 C5003C5004

0 8 0 5 R

5 8 2 3 3 6 1 0 0 7 6 6 C C C

TP401

TP447 TP403

L7017 C7109 C7108

4 9 1 9 0 0 7 7 L C

V211

R5096 R 5 0 0 7 R5095 R 5 0 0 6

TP424 TP428

C7110

C7105

0 1 1 2 2 2 2 0 0 7 C 7 7 L L

0 1 0 0 4 4 L C

TP409 TP407 TP448TP454 TP445

R405 R404

4C7112 0TH7000 1 3 7 0 1 C 7 C

0 6 1 7 C

9 3 5 2 1 1 2 4 4 7 C L L

5 9 5 4 8 8 3 1 0 0 0 2 6 6 6 7 C C C C

C7022

1 0 3 T N A 0 0 3 T N A

0 2 3 D Z 4

R7051

0

R7016 TP905 0 3 2 R 3 9 R5045 TP907 C 1 6 3 TP446TP908 3 C TP906

3 R

C982

0 3 1 7 C

TP904

R7007 R7019

8 1 0 7 U

ANT213

5 0 0 7 T N A

ANT7004

2 0 4 F

1 6 1 7 C 3

5

C7159 9

CC955

C903

C951 C958 4 5 9 C

U904

3 2 0 5 R 4 2 0 5 R 2 6 0 5 R 9 7 0 5 R

C952 C957

TP903

1 0 3 6 7 5 3 1 0 6 7 8 6 8 5 8 5 0 3 5 0 0 0 0 0 5 0 0 0 0 0 6 6 5 9 6 6 6 6 5 6 0 R C C 5 C C C C C C C R

C6086

SC6004

9 5 0 6 C

TP7017

3 5 0 6 C 2 0 0 5 C 5 0 0 5 C 1 0 0 5 V 1 4 0 5 R 4 5 0 6 C 1 0 0 5 C 9 0 0 5 R 8 9 0 6 C 9 9 0 6 C 3 2 0 6 C

TP7015 TP7016 6 1 0 7 C

UCP500

6 0 0 7 R 5 2 0 7 C

1 7 0 6 C

6 1 3 C

9 6 0 6 C 0 8 0 6 C 1 6 0 6 C

3 6 0 7 C

5

TP7000

C

C7062 1 3

5 9 8 2 3 0 7 8 2 2 4 0 5 4 7 7 7 3 8 8 4 0 0 0 0 0 0 1 0 7 0 0 6 6 6 6 6 7 6 6 0 7 7 5 C C C C C C C C R C C

4 3 5 4 4 3 1 R5076 4 5 0 0 6 0 0 0 6 6 5 R5068 7 7 C C R C C

0 4 0 9 4 1 8 9 3 4 1 0 0 0 0 6 6 6 6 6 C C C C C

4 4 0 5 R 7 0 0 5 C

2 4 1 6 C 2 5 0 6 C

C6096 7 2 0 6 C 7 4 0 7

4 6 0 7 C

TP307 C 0 1

TP308 0 5

5 0 0 6 C S

TP7012 3 8 0 7 C 1 8 0 7 C 5 2 2 7 C

R 5 0 0 7 TP5006 C 6 7 0 0 0 0 7 7 C C

TP5005

1 0 7 1 6 5 1 0 0 5 5 5 R R R 5 1 2 1 7 7 1 0 0 5 5 5 R R R R5070 9 5 0 5 R

U301

6 2 2 7 C

3 0 2 7 C 5 8 0 7 C

5 1 2 7 C

4 6 0 5 R 1 5 0 5 R 2 5 0 5 R 2 8 0 5 R 3 8 0 5 R 1 8 0 5R5063TP7004 TP_CLK_MON TP7020 R

0 0 3 C

TP301

TP7003

TP304

L100 L101

C327 R315

TP202

4 4 1

C149

C154

9 6 1 C

4 4 6 6 5 4 1 1 1 1 1 1 C CTP314 C C L C

3 0 1 2 8 1 0 1 1 1 1 1 C C C LC114

3 2 5 5 1 1 C C

C156 5 5 1 C 3 7 1 C

R102 8 1 R103 1 L

C168

C101

C100

C105

C193

F103

0 L130 L131 9L130L131 1 CL170 L169

L125

F102

4 8 6 3 1 1 L C

C126 C125 C141

PAM101

TP7024

3 3 1 L C172

C104

0 5 1 L 8 9 1C174 C143 C1104 C128 C 5 6 5 9L165 C1125 3 1 1 2 1 1 1 1 5 L L C LC129 4 0 3L104 1 1 CC118 F

R5114

5 R 2 1 1 5 R 3 1 1 5 R

TP809

PAM102 0 SC6002 1 7 2 C

R5118

TP7022

8 4 1 C

5 0 1 1 C

R5117

TP306

1 5 1 C 0 5 1 C

C TH300 7 6 TP315 3 6 4 5

R5116

1 0 3 C

4 3 U100 1 LC160 C170

TP7018

R5069

TCXO_EN

TP317 TP316C7084 C305C304 C303 C302 C7061C931 C307

TP7006

1 0 0 5 R 8 8TP7005 0 5 6 R 5 0

0 1 M A P

8. Level 3 Repair 8-3. 8-3. Flow chart o f Troubl eshooting .

Oscilloscope

Digital Multim eter eter

Power Supply

+ dri ver, ESD Safe Tweezer

8960 8960 & Spectru m An alyzer

Soldering iron


8. Level 3 Repair 8-4-1. Power On Mobile phone does not power on. Yes

Check the Battery Voltage. Is it more than 3.8V?

No

Charging the battery by TA. If its voltage level is extremely low (under 3.0V), Change the battery.

Yes

Power-on the phone and check the power-on sound or motor Vibration. Sound or Vibration is ok?

Yes Change the FRONT-LCD ASSY

No Check the voltage level at R304 while pressing power key. Is the voltage high?

No

Yes

Check the signal of AP_PS_HOLD = 1.8V

No

Yes

Check the Clock OSC7000&U7002 Is the frequency 19.2MHz? Yes

Replace the Power key FPCB

Check the output voltage of U7002 L7000 > 0.75V, L7004 > 0.75V, L7005 > 0.75V, U7007 > 0.75V, L7006 > 0.75V, L7008 > 1.1V, L7009 > 0.95V, L7010 > 1.1V, L7011 > 1.3V, L7012 > 1.95V L7013 > 0.75V, L7019 > 0.75V If the output voltage is not normal, Change the U7002. ※ Each voltage level has ±10% margin.

No Replace the OSC7000 & U7002 ※ Test condition (Oscilloscope setting) : 20.0us.div (time division)

Check the initial operation Yes

END


8. Level 3 Repair 8-4-2. 8-4-2. Initi al Initial Failure Yes

Re-download latest SW on the mobile phone

Abnormal Abnormal Re Check "Power on" Trouble shooting process

Check the TCX300 (Crack, open etc.) Check the U7002 (Crack etc)

Normal

Change UCP500

Abnormal

Change PBA

Yes

END


8. Level 3 Repair 8-4-38-4-3-1. 1. No Serv ice ic e

No service Yes

Home screen → Phone → Keypad → *#1234# → Check Phone version → CP : G955FXXXX or unkown

CP : G955FXXXX Check the connection of RF coaxial cable

Yes Check the Voltage C7062 : 0.8V, C7063 : 1.2V C7064 : 1.8V, C7079 : 0.75

No Replace the U7002

Yes No Check the clock TCX300 Is the frequency 26MHz?

Replace the TCX300

Yes

Replace the UCP500

Yes

END


8. Level 3 Repair 8-4-3-2. SIM Part

Insert SIM card Yes No Replace SIM socket

Is SIM socket ok?

Yes

Check the SIM Voltage. (C332,C318) = 1.8V or 2.8V?

No

Change to the new SIM card. If it doesn`t still work SIM card after changing the SIM card, Check the U7002, U408 (Crack etc)

Yes

Check the SIM RST / IO / CLK. (SIM1 : ZD311, ZD313, ZD312) (SIM2 : ZD308, ZD310, ZD309) Is signal ok?

No Check the UCP500 (Crack etc)

Yes

END


8. Level 3 Repair 8-4-4. T-Flash Part

Insert T-Flash card Yes No Replace SIM socket

Is SIM socket ok?

Yes Check the T-flash Voltage. (C331) = 3.0V?

No

Change to the new T Flash card. If it doesn`t still work T Flash card after changing the T FLASH, Check the U7002 (Crack etc)

Yes

Check the t-flash CMD /Data/CLK. (ZD306, ZD302, ZD300) Is signal ok?

No Check the UCP500 (Crack etc)

Yes

END


8. Level 3 Repair 8-4-58-4-5-1. 1. Cabl Cable e Chargi ng Part

Insert TA / USB Yes Charging Sequence Start VBUS_IF_5P0(C860) = 5V or 9V

No Replace SUB PBA

Yes Check the CHG_IN_5P0(L809)=5V or 9V

No Replace U805

Yes No Battery is Charging?

Replace U7018

Yes

END


8. Level 3 Repair 8-48-4-55-2. 2. Wireless Charging Part Part (Norm (Norm al/Fast) al/Fast)

Place Phone on Wireless charging Pad

Yes

Charging Sequence Start VRECT(C7172) = 5V ~ 11V

No Replace GH42-05910A

Yes

No Check the VDD_WLCHG(L7015)=5V or 10V

Replace U7020

Yes No Battery is Charging?

Replace U7018

Yes

END


8. Level 3 Repair 8-4-6. OTG

OTG does not work Yes

Check CHG_IN_5P0 (L809) = 5V

No

Check U7018 (crack, open, damaged, etc.)

Yes

Check VBUS_IF_5P0 (C860) = 5V

No

Check U805 (crack, open, damaged, etc.)

Yes No Check OTG working ?

Replace SUB PBA

Yes

END


8. Level 3 Repair 8-4-78-4-7-1. 1. Sens Sensor or Hub

Sensor Hub does not work Yes Check the voltage C483,C407,C413 =1.8V

No Replace U7002

Yes Check U400 (crack, open, etc.)

Abnormal Replace U400

Yes

END


8. Level 3 Repair 8-4-7-2. Magnetic Sensor

Magnetic Sensor does not work Yes

Check the voltage C421 =1.8V

No Replace U417

Yes No Check R404, R405 (I2C is OK?)

Replace U400



Yes

END


8. Level 3 Repair 8-4-7-3. 6Axis Sensor

6Axis Sensor does not work Yes

Check the voltage C440, C439 =1.8V

No Replace U417

Yes Check 6Axis MOSI, CLK, NSS, MISO pin (SPI is OK?)

No Replace U400



Yes

END


8. Level 3 Repair 8-4-7-4. Barometer sensor

Barometer Sensor does not work Yes

Check the voltage C435 =1.8V

No Replace U417

Yes

Check R404, R405 (I2C is OK?)

No Replace U400



Yes

END


8. Level 3 Repair 8-48-4-77-5. 5. Proxi mit y + RGB RGB Li ght senso r

Proximity + RGB Light Sensor does not work Yes Check the voltage L306, C334, C367 =1.8V (Sensor’s IO voltage)

No Replace U417

Yes Check the voltage L305, C323 =3.3V (Sensor’s LED voltage)

No Replace U901


Replace U400

Yes No Check connection HEA300

Reconnect HEA300

Yes Check sensor FPCB (crack, damaged, etc.)

Abnormal Replace Sensor FPCB

Yes

END


8. Level 3 Repair 8-4-7-6. HRM Sensor

HRM Sensor does not work Yes Check the voltage C441, C442 =1.8V (Sensor’s IO voltage)

No Replace U900

Yes Check the voltage C447 =3.3V (Sensor’s LED voltage)

No Replace U900


Replace UCP500


No Replace U406

Yes

END


8. Level 3 Repair 8-4-78-4-7-7. 7. Hall Sens or

Hall Sensor of main PBA does not work Yes Check the voltage C476 =1.8V

No Replace U7002

Yes Yes Check U411

Replace U6000

(crack, damaged, etc.)

No

END

Hall Sensor of Sub PBA does not work Yes Check the voltage C101 of Sub PBA =1.8V

No

1. Reconnect SOC200 2. Replace SUB PBA

Yes

Check the SOC200 Connection

No

1. Reconnect SOC200 2. Replace SUB PBA

Yes

END


8. Level 3 Repair 8-4-8-1. Microphone Part - Main MIC

Check main microphone function in voice call Handset mode or voice recorder Yes

C h e c k t h e S O C 2 0 0 C o n n e c t i o n

No

Reconnect SOC200

Yes

Check the voltage C116 = 1.8V?

No

Replace U808 of Main PBA

Yes

END


8. Level 3 Repair 8-4-88-4-8-2. 2. Mic Micro roph phon one e Part Part - Sub(2nd) MIC

Check Sub(2nd) microphone function in voice call loudSPK mode or in camcording mode Yes

Check the voltage at C835 = 1.8V

No

Replace U808

Yes

Check the SUB_MIC_DAT SUB_MIC_D ATA A at C869?

No Replace MIC800

Yes

END


8. Level 3 Repair 8-4-9. Speaker Part

Check Check speaker speaker functio function. n. Play MP3 with maximum volume level. Yes

Check C-clips

No

Resolder or Replace ANT800, ANT801 ANT801

ANT8000, ANT8001 ANT8001

Yes

Chec Check k the the PWM PWM output at ANT8000,ANT8001

No Replace U808

Yes

Replace speaker module

END


8. Level 3 Repair 8-4-10 8-4-10.. Receiver Receiv er Part

Check Check receiver receiver functio function n in voice call receiver mode Yes

Check RCV module where RCV's placed for any damage

No

Resolder or Replace ANT802, ANT803 ANT803

Yes

Check the signals on L804, L805

No Replace U808

Yes

END


8. Level 3 Repair 8-4-11. BT/WIFI BT/WIFI is not working Yes No Enable BT or WIFI function.

Check BT or WIFI fuction ON

Yes

Check the Voltage C411 = 1.8V

No

Check the U7002 (Crack, open, damaged, etc)

Yes Check the Voltage C416 = 1.22V

No Resolder or change the C416

Yes Check the status of ANT400,ANT401,ANT402

No

Resolder or change the ANT400, ANT401, ANT402

Yes Check the Status of

V400, C487, V401, C486, C423, L436, F400, L437, C401, F401, L430

No

Resolder or Replace of V400, C487, V401, C486, C423, L436, F400, L437, C401, F401, L430

Yes

Resolder or change U401

END


8. Level 3 Repair 8-4-12. GPS GPS is not working Yes No Enable GPS Function in the setting.

Check GPS function ON

Yes

Check the Antenna contact ANT209

No

1. Resolder or Replace the ANT2009 2. Replace REAR

Yes

Check(crack,open,etc) C299, L224, C425, L411, U407, L410, L412, F402 L413

No

Resolder or change the wrong element (open, crack, deviation, etc)

Yes

Check 26MHz Clock at output of OSC400

No Replace the OSC4000

Yes

Check the voltage on L409 = 2.8V


Yes

Check if GPS_HUB_EN at TP4000 = 1.8V

No Replace the U400

Yes

END


8. Level 3 Repair 8-4-13. NFC NFC is not working Yes No Enable NFC Function

Check NFC function ON

Yes

Check the Antenna connect ANT7009, ANT7010

No

1. Resolder or Replace The ANT7009, ANT7010 2. Replace NFC / MST ANT

Yes

Check the Voltage on C463 = 1.8V


Yes No Replace the UCP500

Check 26MHz Clock at TP435

Yes

Check the Status of C467, R419, L421, C468, L422, C473, C478, R425, C469, C472, C471

No

Resolder or Replace C467, R419, L421, C468, L422, C473, C478, R425, C469, C472, C471

Yes

Resolder or Replace U408

Yes

END


8. Level 3 Repair 8-4-14 8-4-14.. Disp lay

LCD is still off after PWR ON Yes

Check the connection of HDC901

No Reconnect the HDC901

Yes Check VDD_DDI_3P0 = 3.0V (C966) VDD_DDI_1P8 = 1.8V (C967) VDD DDR 1P6 1P6 = 1.6V 1.6V C972 C972

No Resolder or Replace the U900

Yes

Check ELVDD 4P6 = 4.6V (C970) ELVSS_-4P4 ELVSS_-4P4=-5.4 ~ -1.4V (C965) ELAVDD_7P0 = 5.8 ~ 7.9V (C971)

No Resolder or Replace the U900

Yes

Replace the Display module

Yes

END


8. Level 3 Repair 8-4-15. 8-4-15. 12M CAMERA

“Camera” function does not work Yes

Check the Camera connector


on Main PBA Yes

Check the voltage L1001 : 2.9V , C1009 : 1.8V C937 : 1.0V , C936 : 1.0V

No Resolder or Replace U901

C942 : 1.8V , C922 : 2.8V C923 : 1.8V , C921 : 2.8V C920 : 2.8V Yes

Check the CAM_MCLK is

No Replace the PBA

26Mhz (L1002) Yes

Replace the camera module

Yes

END


8. Level 3 Repair 8-4-16. 8-4-16. 8M CAMERA CA MERA


Check the Camera connector

No Reconnect the HEA900

on Main PBA Yes

Check the voltage C1004 : 2.8V


C1002 : 1.05V C1007 : 1.8V C1000 : 2.8V

Yes

Check the VTCAM_MCLK is

No Replace the PBA

26Mhz (L1003) Yes

Replace the Front camera module

Yes

END


8. Level 3 Repair 8-4-17. IRIS CAM


Check the IRIS CAM


Connection Yes Check the voltage

No

C1021 : 1.2V, C1020 : 1.8V


C1022 : 2.8V Yes No Check the IRIS_LED

Reconnect HEA300

Connector Yes

Check the IRIS_MCLK is 26 Mhz (R1011)

No Resolder or Replace UCP500

Yes

Replace the camera module

Yes

END


8. Level 3 Repair 8-4-18. TSP

Touch Screen does not work Yes

Check TSP Connector on MAIN PBA


Yes Check the voltage VDD_TSP_1.8V (C964) = 1.8V VDD_TSP_3.3V (C963) = 3.3V


Yes


Yes

END


8. Level 3 Repair 8-4-19. Pressure Touch (Home Button function)

Touch Screen does not work Yes

Check TSP Connector on MAIN PBA


Yes Check the voltage VDD_TSP_1.8V (C964) = 1.8V VDD_TSP_3.3V (C963) = 3.3V


Yes


Yes

END


8. Level 3 Repair 8-4-20. Motor

Motor does not work Yes

Check the Clip on MAIN PBA ANT7004 ANT7004 and ANT7005 ANT7005

No

Resolder or Reconnect ANT7 004 , ANT700 ANT 7005 5

Yes

Check L7020 L7021 (crack,open,etc)

No

Resolder or Replace L7020, L7021

Yes

Check the voltage C7024 > = 5.2V

No

Resolder or Replace C7024 or Replace : U7018

Yes

Replace Motor

Yes

END


8. Level 3 Repair 8-4-21. MST MST is not working Yes No Enable MST Function.

Check MST function ON

Yes

Check the Antenna contact ANT7011, ANT7006, ANT7007

No

1. Resolder or Replace ANT7011, ANT7006, ANT7007 2. Replace REAR

Yes

Check the battery level Battery >= 5%

No Charging the Battery

Yes

Type *#0*# -> MST Test On Check voltage on C7164


Yes No Check the Status of U7023


Yes

END


8. Level 3 Repair 8-4-22. GSM 850/900, WCDMA B5/8, LTE B5/8/12/13/17/18/19/20/26/28 Rx

Check status OK at coaxial cable, SUB PBA and mechanical material

NO

Change Coaxial cable or SUB PBA or mechanical material

YES

NO Check L105

≥ -65 dBm

?

Resolder or change RFS101 or L106 or C110 or L105

YES

Check component soldering status OK at F100 ?

NO

Resolder or change F100

YES

NO Check L109

≥ -65 dBm

?

Resolder or change L109

YES

Check component soldering status OK at PAM100 ?

NO

Resolder or change PAM100

YES

NO Check L102

≥ -65 dBm

?

Resolder or change L102 or C1100

YES NO Receiver is O.K?


YES END


8. Level 3 Repair 8-4-23. 8-4-23. LTE B7/40 B 7/40 4RxD Check status OK at coaxial cable, SUB PBA and mechanical material

NO


NO


YES

Check L105

≥ -65 dBm

?

YES


NO


YES NO Check L103

≥ -6 5dBm

?


YES

Check component soldering status OK at U101 ?

NO


NO

Resolder or change L163 or L110

NO


NO


NO


NO

Resolder or change C115 or C1104 or C1101 or L167 or C135

YES

Check L163

≥ -65dBm - 65dBm

?

YES


YES

Check L169 or L170

- 65dBm ≥ -65dBm

?

YES Check component soldering status OK at F103 ?

YES

Check C115 or C135

≥ -65dBm - 65dBm

?



YES END


8. Level 3 Repair 8-4-24. 8-4-24. WCDMA B 1/4, TD-SCDMA TD-SCDMA B 34/39, 34/39, LTE L TE B1/4/39/66 Rx Check status OK at coaxial cable, SUB PBA and mechanical material

NO


NO


YES

Check L105

≥ -65 dBm

?

YES


NO


YES NO Check L103

≥ -6 5dBm

?


YES


NO


NO


NO


NO

Resolder or change L120 or L123 or L127

NO


NO

Resolder or change C118 or L104 or C134 or C1102 or C108 or L121

YES

Check L163

≥ -65dBm - 65dBm

?

YES


YES

Check L120 or L123

- 65dBm ≥ -65dBm

?


YES

Check C134 or L121

≥ -6 5dBm

?



YES END


8. Level 3 Repair 8-4-25. 8-4-25. LTE B32 Rx Check status OK at coaxial cable, SUB PBA and mechanical material

NO


NO


YES

Check L105

≥ -65 dBm

?

YES


NO


YES NO Check L103

≥ -6 5dBm

?


YES


NO


NO


NO


NO

Resolder or change C190 or F105 or L150

NO


NO

Resolder or change C1102 or C108 or L121

YES

Check L153

≥ -65dBm - 65dBm

?

YES


YES

Check C190, L150

- 65dBm ≥ -65dBm

?

YES Check component soldering status OK at PAM102 ?

YES

Check L121

≥ -6 5dBm

?



YES END


8. Level 3 Repair 8-4-26. 8-4-26. GSM1800/1900 GSM1800/1900,, WCDMA B2, L TE B2/3/25 B 2/3/25 Rx Check status OK at coaxial cable, SUB PBA and mechanical material

NO


NO


YES

Check L105

≥ -65 dBm

?

YES


NO


YES NO Check L103

≥ -6 5dBm

?


YES


NO


NO


NO


NO

Resolder or change C1103 or L171 or L124

YES

Check L163

≥ -65dBm - 65dBm

?

YES


YES

Check L124

- 65dBm ≥ -65dBm

?



YES END


8. Level 3 Repair 8-4-27. LTE B3 4RxD Check status OK at coaxial cable, SUB PBA and mechanical material

NO


NO


YES

Check L105

≥ -65 dBm

?

YES


NO


YES NO Check L103

≥ -6 5dBm

?


YES


NO


NO


NO


NO

Resolder or change L137 or C185 or L141

NO


NO

Resolder or change L144 or C1109 or C1106 or L142 or L139

YES

Check L153

≥ -65dBm - 65dBm

?

YES


YES

Check L137

- 65dBm ≥ -65dBm

?


YES

Check L144 or L139

≥ -65dBm - 65dBm

?



YES END


8. Level 3 Repair 8-4-28. 8-4-28. LTE B1/4 B 1/4 4RxD Check status OK at coaxial cable, SUB PBA and mechanical material

NO


NO


YES

Check L105

≥ -65 dBm

?

YES


NO


YES NO Check L103

≥ -6 5dBm

?


YES


NO


NO


NO


NO


NO


NO

Resolder or change L138 or C186 or C1110 or C1107 or L132 or L140

YES

Check L153

≥ -65dBm - 65dBm

?

YES


YES

Check L137

- 65dBm ≥ -65dBm

?


YES

Check L138 or L140

≥ -65dBm - 65dBm

?



YES END


8. Level 3 Repair 8-4-29. 8-4-29. LTE L TE B7/38/40/41 Rx Check status OK at coaxial cable, SUB PBA and mechanical material

NO


NO


YES

Check L105

≥ -65 dBm

?

YES


NO


YES NO Check L103

≥ -6 5dBm

?


YES


NO


NO


NO


NO


YES

Check L153

≥ -65dBm - 65dBm

?

YES


YES

Check L172

- 65dBm ≥ -65dBm

?



YES END


8. Level 3 Repair 8-4-30. LTE B5/8/12/13/17/18/19/20/26/28 , WCDMA B5/8 , GSM850/900 DRx NO Check status OK at mechanical material

Change mechanical material

YES

Check C286

- 65dBm ≥ -65dBm

?

NO

Resolder or change V200 or L206 or C201 or C286

YES

Check component soldering status OK at CPL200 ?

NO

Resolder or change CPL200

YES NO Check L203

≥ -6 5dBm

?


YES


NO


NO

Resolder or change C279 or L215

YES

Check L215

≥ -65 dBm

?



YES END


8. Level 3 Repair 8-4-31. 8-4-31. LTE L TE B1/4/7 B 1/4/7/38/40 /38/40/41/66 /41/66 , WCDMA B 1/4 DRx NO Check status OK at mechanical material


YES

Check L224

≥ -65 dBm

?

NO


YES

Check component soldering status OK at F202?

NO


YES NO Check L216

≥ -6 5dBm

?


YES


NO


NO

Resolder or change C285 or L218 or C252

YES

Check C252

≥ -65dBm

?



YES END


8. Level 3 Repair 8-4-32. 8-4-32. LTE B 2/3/25 , WCDMA WCDMA B2 , GSM1800/190 GSM1800/1900 0 DRx NO Check status OK at mechanical material


YES

Check L224

≥ -65 dBm

?

NO


YES


NO


YES NO Check L216

≥ -6 5dBm

?


YES


NO


NO


YES

Check L242

≥ -65dBm - 65dBm

?



YES END


8. Level 3 Repair 8-4-33. LTE B32 DRx NO Check status OK at mechanical material


YES

Check L224

≥ -65 dBm

?

NO


YES


NO


YES NO Check L216

≥ -6 5dBm

?


YES


NO


NO


YES

Check L239

≥ -65dBm - 65dBm

?

YES


NO


YES NO Check L219

≥ -65dBm - 65dBm

?


YES NO Check L242

- 65dBm ≥ -65dBm

?




YES END


8. Level 3 Repair 8-4-34. 8-4-34. LTE B39 DRx , B1/4/7 4RxD(DRx2) NO Check status OK at mechanical material


YES

Check C286

- 65dBm ≥ -65dBm

?

NO

Resolder or change V200 or C201 or L206 or C286

YES

Check component soldering status OK at CPL200?

NO


YES NO Check L200

≥ -6 5dBm

?


YES


NO


NO


YES

Check C205

≥ -65dBm

?



YES END


8. Level 3 Repair 8-4-35. 8-4-35. LTE B40 B 40 4RxD(DRx2) NO Check status OK at mechanical material


YES

Check C286

- 65dBm ≥ -65dBm

?

NO


YES


NO


YES NO Check L200

≥ -6 5dBm

?


YES


NO


NO


NO


NO


NO


YES

Check C204

≥ -6 5dBm

?


YES

Check C222

- 65dBm ≥ -65dBm

?

YES

Check C205

≥ -65dBm

?



YES END


8. Level 3 Repair 8-4-36. 8-4-36. LTE B3 B 3 4RxD(DRx2) NO Check status OK at mechanical material


YES

Check C286

- 65dBm ≥ -65dBm

?

NO


YES


NO


YES NO Check L200

≥ -6 5dBm

?


YES


NO


NO


YES

Check L232

≥ -65dBm - 65dBm

?



YES END


8. Level 3 Repair 8-4-37. 8-4-37. WCDMA B5/8, L TE B5/8/12 B 5/8/12/17/18 /17/18/19/20 /19/20/26/28 /26/28 Tx

Check C111 C111 : About 0 dBm ?

NO

Resolder or change U202 or C114 or L108 or C112 or C111

YES


NO


YES Check L109 : About 23dBm ?

NO


YES


NO


YES

Check L105 : About 23dBm ?

NO


NO

Resolder or change RFS101

NO


YES

Check RFS101 : About 23dBm ?

YES

ANT is O.K?

YES END


8. Level 3 Repair 8-4-38. 8-4-38. LTE B13 Tx

Check C117 : About 0dBm ?

NO

Resolder or change U202 or L157 or C1118 or C117

YES


NO



NO


YES


NO



NO


YES


NO


YES


NO


NO


NO


YES


YES

ANT is O.K?

YES END


8. Level 3 Repair 8-4-39. GSM 850/900 Tx


NO

Resolder or change U202 or C1122 or C1124

YES


NO



NO


YES


NO



NO


YES


NO


YES


NO


YES


NO


NO


YES

ANT is O.K?

YES END


8. Level 3 Repair 8-4-40. GSM 1800/1900 Tx Check C1123 : About 0dBm ?

NO

Resolder or change U202 or C1121 or C1123

YES


NO


YES


NO


YES


NO



NO


YES Check component soldering status OK at U101 ?

NO


NO


NO


YES


YES


YES


NO


YES


NO


NO


YES

ANT is O.K?

YES END


8. Level 3 Repair 8-4-41. 8-4-41. WCDMA B 1/2/4, TD-SCDMA TD-SCDMA B34/39, B 34/39, LTE B1/2/3/4/25/39 B1/2/3/4/25/39 Tx


NO

Resolder or change U202 or L154 or C166 or C163

YES


NO



NO


YES


NO


YES


NO


NO


NO


NO


NO


YES


YES

Check L105 : About 23dBm ? YES Check RFS101 : About 23dBm ?

YES

ANT is O.K?

YES END


8. Level 3 Repair 8-4-42. LTE B7 Tx


NO

Resolder or change U202 or L143 or L155 or C188

YES


NO



NO


YES


NO


YES


NO


NO


NO


NO


NO


YES


YES

Check L105 : About 23dBm ? YES Check RFS101 : About 23dBm ?

YES

ANT is O.K?

YES END


8. Level 3 Repair 8-4-43. 8-4-43. LTE B 38/40/41 38/40/41 Tx


NO

Resolder or change U202 or C127 or L156 or C189

YES


NO



NO


YES


NO


NO


NO


NO


YES

Check L103 : About 23dBm ? YES


YES Check L105 : About 23dBm ? YES


NO


YES NO ANT is O.K?


YES END


8. Level 3 Repair 8-48-4-44 44.. Fingerp rin t Senso r

Fingerprint Sensor does not work Yes

Check the Fingerprint Sensor connector on Main PBA


Yes Check the voltage C1013 =3.3V C1012 = 1.8V

No Replace U1001

Yes Check the Fingerprint Sensor MISO, MOSI, CLK, CS_N Pins (SPI is OK?)

No Replace UCP500

Yes

Replace the Fingerprint sensor module

Yes

END


8. Level 3 Repair 8-4-45. DeX Station DeX does not work

Yes No

Check the TA connected to DeX station

Connect TA to DeX Station

Yes

Yes

Check the DeX work properly after changing anoth another er DeX DeX Stat Statio ion n

Change the DeX Station

No No Lower Sub PBA Connection is OK

USB Device is recognized

Yes

Connect again or chage the lower Sub PBA

Yes Change the U804

DeX Screen is displayed to monitor

Yes DeX work

No

Lower Sub PBA connection is OK

No

No Change the U806

No

No Connect again or Change lower Sub PBA

Change Main PBA


END

8. Level 3 Repair 8-5. 8-5. Servic Servic e Schematic s - NC Point(Top View)


SM-G955F_Tshoo_7.pdf

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