Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-2. Block Diagram
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-3. Flow Chart of Troubleshooting
Oscilloscope
Digital Multimeter
Power Supply
+ driver, ESD Safe Tweezer
8960 & Spectrum Analyzer
Soldering iron
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
TOP
ANT605
ANT606
ANT607
ANT609
BH200
BH201
BH202
BH203
BH204
BH205
BH206
BH207
BH208
BH209
BTC500
C302
C303
C304
C305
C308
C309
C310
C315
C320
C352
C405
C406
C408
C409
C410
C418
C419
C420
C421
C423
C424
C426
C427
C456
C459
C460
C465
C471
C472
C473
C474
C487
C488
C5000
C5001
C5002
C5006
C5007
C522
C523
C525
C526
C530
C576
C599
C601
C602
C604
C605
C606
C607
C608
C612
C613
C614
C615
C618
C621
C622
C625
C626
C701
C704
C705
C706
C708
C709
C710
C711
C716
C719
C720
C721
C722
C723
C724
C725
C727
C728
C734
C737
C740
C741
C742
C743
D600
F300
GA200
GA201
GA202
GA203
GA204
GA205
GA206
HDC600
HDC700
HDC703
L302
L303
L304
L601
L603
L605
L700
L702
L703
L705
L706
L709
OSC300
Q700
R310
R401
R402
R403
R404
R405
R406
R407
R408
R409
R410
R411
R412
R413
R415
R418
R419
R420
R421
R422
R425
R426
R428
R429
R430
R431
R432
R433
R435
R439
R441
R442
R443
R446
R447
R448
R449
R450
R451
R506
R507
R508
R516
R517
R518
R519
R520
R521
R522
R523
R525
R527
R530
R600
R601
R602
R607
R610
R612
R613
R614
R616
R617
R700
R701
R706
R707
R712
R713
R720
R721
R723
SC200
SC202
SC204
SIM500
TH400
TP_ACC_INT
TP_AP_500
TP_BT_WLAN_SLEEP_CLK
TP_CLK_500
TP_GPS_CLK_300
TP_GPS_CTS
TP_GPS_PWON
TP_GPS_RTS
TP_GPS_RXD
TP_GPS_TXD
TP_MODEM_CLK_400
TP_MODEM_TO_CLK_400
TP_TCXO_EN
TP_UB400
TP400
TP402
TP403
TP406
TP407
TP408
TP409
TP500
TP501
TP502
TP503
TP504
TP505
TP506
TP509
TP510
TP513
TP514
TP515
TP516
TP517
TP518
TP519
TP520
TP521
TP522
TP523
TP524
TP525
TP526
TP527
TP528
TP529
TP530
TP531
TP532
TP700
TP701
U302
U504
U600
U601
U602
U603
U700
UCP400
UME500
VR600
VR601
ZD501
ZD502
ZD503
ZD504
ZD505
ZD506
ZD507
ZD508
ZD509
ZD510
ZD511
ZD512
ZD700
ZD703
ZD704
ZD706
ZD707
ZD708
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
BOTTOM
ANT200
ANT201
ANT202
ANT203
ANT204
ANT205
ANT206
ANT207
ANT300
ANT600
ANT601
ANT608
ANT610
C100
C101
C102
C103
C105
C106
C109
C110
C111
C112
C113
C114
C115
C116
C117
C118
C121
C122
C123
C124
C125
C126
C127
C128
C129
C130
C133
C134
C135
C136
C137
C138
C139
C140
C143
C144
C145
C146
C147
C148
C149
C154
C155
C157
C158
C159
C160
C161
C162
C163
C164
C165
C166
C167
C168
C169
C170
C173
C174
C176
C177
C178
C179
C180
C181
C182
C183
C184
C185
C186
C187
C188
C189
C190
C191
C200
C201
C202
C203
C204
C205
C206
C207
C208
C209
C210
C211
C212
C213
C214
C215
C216
C217
C219
C220
C221
C222
C223
C225
C226
C227
C228
C229
C230
C231
C232
C233
C234
C235
C236
C238
C239
C240
C243
C244
C245
C246
C247
C248
C249
C250
C251
C252
C253
C254
C255
C256
C257
C258
C259
C260
C261
C262
C263
C264
C300
C306
C307
C311
C312
C313
C314
C316
C317
C318
C319
C321
C322
C323
C324
C325
C326
C327
C328
C329
C330
C331
C332
C333
C334
C335
C336
C337
C338
C339
C340
C341
C342
C343
C344
C345
C346
C347
C348
C349
C350
C353
C400
C401
C402
C403
C404
C407
C411
C412
C413
C414
C415
C416
C417
C422
C425
C428
C429
C430
C431
C432
C433
C434
C435
C436
C437
C438
C439
C440
C441
C442
C443
C444
C445
C446
C447
C448
C449
C450
C451
C452
C453
C454
C455
C457
C458
C461
C462
C463
C464
C466
C467
C468
C475
C476
C477
C478
C479
C480
C481
C482
C483
C484
C485
C486
C500
C5003
C5004
C5005
C5008
C502
C503
C504
C506
C509
C510
C512
C513
C514
C515
C516
C517
C518
C519
C520
C521
C524
C527
C529
C531
C532
C533
C534
C535
C536
C537
C538
C539
C540
C541
C542
C543
C544
C545
C546
C547
C548
C550
C551
C552
C553
C554
C555
C556
C557
C558
C559
C560
C561
C562
C563
C564
C565
C566
C567
C568
C569
C570
C571
C572
C573
C574
C575
C577
C578
C579
C580
C581
C582
C583
C584
C585
C586
C587
C588
C589
C590
C591
C592
C593
C594
C595
C596
C597
C598
C600
C603
C609
C610
C611
C616
C617
C619
C620
C623
C624
C627
C628
C629
C700
C702
C703
C707
C712
C713
C714
C715
C717
C718
C726
C729
C730
C731
C732
C733
C735
C736
C738
C739
C745
C746
C747
C748
C749
C750
CPL100
D500
D700
F100
F101
F102
F103
F104
F200
F201
F202
F203
F204
F301
F701
F703
F705
HDC701
HDC702
L100
L103
L104
L106
L107
L108
L110
L111
L112
L113
L114
L115
L116
L117
L118
L119
L120
L121
L122
L123
L124
L125
L126
L127
L128
L129
L130
L131
L132
L133
L134
L135
L136
L137
L138
L139
L141
L142
L143
L144
L145
L146
L148
L150
L151
L152
L154
L200
L201
L202
L203
L204
L205
L206
L207
L209
L210
L212
L213
L214
L215
L216
L217
L218
L219
L220
L221
L300
L301
L306
L307
L308
L309
L310
L312
L313
L314
L315
L316
L317
L318
L500
L501
L502
L503
L504
L505
L506
L507
L508
L600
L602
L607
L608
L609
L610
L611
L701
L704
L707
L708
L710
L711
L712
L713
LED500
OSC301
OSC500
PAM100
Q500
Q501
Q600
R101
R102
R103
R104
R200
R201
R202
R208
R209
R210
R300
R302
R305
R306
R307
R308
R309
R416
R417
R423
R424
R436
R437
R438
R500
R503
R504
R505
R509
R510
R511
R512
R514
R515
R526
R528
R529
R531
R532
R533
R534
R536
R537
R604
R605
R606
R608
R609
R611
R619
R702
R708
R709
R710
R716
R717
R719
RFS100
SC201
SC203
SC205
SC206
TCX200
TH200
TP_COVER_INT
TP_NFC_CLK_REQ
TP102
TP103
TP200
TP201
TP202
TP203
TP300
TP301
TP302
TP303
TP304
TP305
TP306
TP307
TP308
TP309
TP310
TP311
TP312
TP313
TP314
TP315
TP316
TP317
TP318
TP319
TP321
TP322
TP323
TP324
TP325
TP401
TP507
TP508
TP511
TP512
U100
U101
U102
U103
U104
U105
U200
U201
U202
U300
U301
U303
U304
U500
U501
U502
U503
U604
U701
U702
VOL602
VOL603
VOL604
VR200
VR201
VR202
VR203
VR204
VR205
VR206
VR207
VR300
ZD500
ZD701
ZD702
ZD705
ZD709
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4. Power On
Mobile phone does not power on.
Check the Battery
Voltage.
Is it more than 3
.
8V?
Charging the battery by TA.
If its voltage level is extremely low(under 3.0V),
Change the battery.
Power-on the phone and
check the power-on sound
or motor Vibration.
Sound or Vibration is ok?
Change the FRONT-LCD ASSY
Check the voltage level at
ANT601 or R619 while
pressing power key.
Is the voltage high?
Check the signal of
PMIC_PWR_HOLD
(TP403 = 1.8V)
Check the Clock TCX200
Is the frequency 26Mhz?
Replace the POWER KEY FPCB.
Check the output voltage of U501
(C563 >1.0V, C566 > 1.0V, C568 > 1.0V, C570 > 1.0V,
C574 > 1.3V, C578 > 1.9V, C581 > 1.0V)
If the output voltage is not normal, Change the U501.
※
Each voltage level has ±10% margin.
check the initial operation
END
Yes
Yes
Abnormal
No
No
Yes
Yes
No
Yes
Replace the TCX200.
※
Test condition (Oscilloscope setting)
: 20.0us.div (time division)
No
Yes
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-2. Initial
Initial Failure.
Re-download latest
SW on the mobile
phone.
Re Check "8-4-1 Power on"
Trouble shooting process
Check the TCX200
(Crack, open etc.)
Check the U501
(Crack etc)
Change PBA
Yes
Abnormal
Abnormal
Change UCP400
Normal
Abnormal
END
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-3. No Service
No service
Home screen
→
Phone
→
Keypad
→
*#1234#
→
check Phone version
→
CP : A310FXXXX or unknown
Check the connection of
RF coaxial cable
Replace the TCXO200
Yes
CP : A310FXXXX
Replace the U202
CP : unknown
END
Check menu setting
Settings
→
Mobile networks
→
Network mode
→
Is setting
auto connect ?
Check the voltage level
C517 = 1.2V
C518 = 1.8V
C516 = 1.2V
C515 = 1.8V
Check TCX200
Frequency = 26MHz
Replace UCP400
No
Yes
No
Yes
Yes
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-4. Sim Part
Insert SIM card
Change to the new
SIM card. Work
nomal?
Yes
No
Check the U3000,U303 (Crack etc)
No
END
Check the SIM
Voltage.
(C5001, R523 )
>= 1.8 or 1.8?
Check that SIM
RST/IO/CLK.
(ZD509,ZD507,ZD508)
has signal
Check the UCP400 (Crack etc)
No
Yes
Yes
Is SIM socket ok?
Resoldering SIM socket pad
No
Yes
Yes
END
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-5. Charging Part
Charging Failure.
Check the voltage at
VBUS_IF_5P0(C739)=5V
Yes
Yes
Battery is charging?
Change battery
Change PBA
No
Change UCP400
Yes
Yes
END
Check the voltage at
CHG_IN_5P0(C521)=5V
Check and replace U500 (crack etc)
No
Yes
Check the USB connector(Crack etc)
Reconnect ‘Main PBA’ and ‘Sub PBA’
Replace ‘Sub PBA’
No
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-6. OTG
OTG Failure.
Check the voltage at
CHG_IN_5P0(C521)=5V
Yes
Yes
Change PBA
Change UCP400
Yes
END
Check the voltage at
VBUS_IF_5P0(C739)=5V
Check and replace U500 (crack etc)
No
Yes
Reconnect ‘Main PBA’ and ‘Sub PBA’
Replace ‘Sub PBA’
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-7. Proxy Sensor
Sensor does not work
Check the R607 =
1.8V ?
Yes
Yes
END
Resolder or Replace : U600
No
Check the C606 =
3.3V ?
Yes
Resolder or Replace : U501
No
Check R600, R601
(I2C is OK?)
Yes
Resolder or Replace : U400-1
No
Replace U601
(Proxy sensor)
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-7-2. Magnetic Sensor
Sensor does not work
Check the C618 =
1.8V ?
Yes
Yes
END
Resolder or Replace : U600
No
Check R430, R431
(I2C is OK?)
Yes
Resolder or Replace : U400-1
No
Replace U603
(Magnetic sensor)
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-7-3. Accel Sensor
Sensor does not work
Check the C612 =
1.8V ?
Yes
Yes
END
Resolder or Replace : U600
No
Check R430, R431
(I2C is OK?)
Yes
Resolder or Replace : U400-1
No
Replace U602
(Accel sensor)
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-8-1 Microphone Part
- Main MIC
Check main microphone function
in voice call Handset mode or voice recorder mode
Check sub board
connection (HDC703)
Yes
Yes
END
Set the HDC703 connection
No
Check MIC100 SMD
status at sub board
Yes
Resolder or Replace : MIC100
No
Check component
soldering status of
L109 at sub board
Yes
Resolder or Replace : L109
No
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-8-2. Microphone Part - Sub(2nd) MIC
Check sub(2
nd
) microphone function
in voice call loudSPK NS Off mode or in
camcording mode
Check sub board
connection (HDC600)
Yes
Yes
END
Set the HDC600 connection
No
Check component
soldering status of
L601
Yes
Resolder or Replace : L601
No
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-10. Receiver Part
Check receiver function
in voice call receiver mode.
Check the statuses
ANT607 / ANT609
Yes
Yes
END
Resolder or Replace : ANT607, ANT609
No
Check RCV module
for any damage
Yes
Replace the RCV module
No
Check the signals on
L603, L605
Yes
Replace U501
No
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-12. BT/WIFI
BT/WiFi is not working
Check BT or WiFi
function ON
Yes
Yes
END
Enable BT or WiFi Function
No
Check the Voltage on
C336 = 1.8V
Yes
Check the U501(crack, open, damaged, etc.)
No
Check the Status of
L310, C346, F301
L316
Yes
Resolder or change the
L310, C346, F301
L316
No
Resolder or Replace
U304
Check the Status of
L312, C345, VR300
Yes
Resolder or change the
L312, C345, VR300
No
Check the Status of
ANT300
Yes
Resolder or Replace ANT300
No
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-13. GPS
GPS is not working
Check GPS function ON
Yes
Yes
END
Enable GPS Function in the setting
No
Check the ANT201
(Crack, open, etc)
Yes
1. Resolder or Replace ANT201
2. Replace REAR
No
Check(crack, open, etc)
VR201,C261,C238,C239
Yes
Resolder or change the wrong element
(open, crack, deviation, etc)
No
Check(crack, open, etc)
F203,L301,U301,L302
F300,L303
Yes
Resolder or change the wrong element
(open, crack, deviation, etc)
No
Check GPS TCXO at
output of OSC300
Yes
Check OSC300
(short, open, crack, etc)
No
Check the voltage on
C305 = 2.8V ?
Yes
Check PMIC(U501)
(short, open, crack, etc)
No
Check if GPS_EN at
TP_GPS_PWON is 1.8V
Yes
Check UCP400-1
(short, open, crack, etc)
No
Resolder or change U302
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-14. NFC
NFC is not working
Check NFC Function
ON
Yes
Yes
END
Enable NFC Function
No
1. Resolder or Replace BTC500
2. Replace Battery
No
Check the antenna
contact BTC500
(crack, open, etc)
Yes
1. Resolder or Replace C307, C303, C304, C555, R305, R306
2. Resolder or Replace U501
No
Check the Voltage
on
C307 = 1.8V
Yes
Check TCX200
No
Check 26MHz
Clock at
TP_AP_500
Yes
Resolder or Replace C316, C318, R302, L306, C322, C323,
C325, L307, C328, C329, C324
No
Check the status of C316,
C318, R302, L306, C322,
C323, C325, L307, C328,
C329, C324
Yes
Resolder or
Replace U303
Yes
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-15. Display
Display is still of after PWR ON
Check the connection
of HDC702
Yes
Yes
END
Reconnect the HDC702
No
Resolder or Replace U501
No
Check
VDD_LCD_3P0=3.0V(C713),
VDD_LCD_1P8=1.8V(C715)
Yes
Check MIPI CM Filter (open, short, crack, etc.)
(F701, F703, F705)
No
Check
OLED_TE
Yes
Check TCX200
No
Check 26MHz
Clock at
TP_AP_500
Yes
Resolder or Replace the DCDC (U700)
No
Check
ELVDD_4.6V=4.6V(C721)
ELVSS_-4P4=-1.4~-5.4V(C724)
ELAVDD_7.0V=5.8~7.9V(C718)
Yes
Replace
OCTA Module
Yes
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-16. 16M CAM
"Camera" function does not work
Check the connection
of HDC700
Yes
Yes
END
Reconnect the HDC700
No
Resolder or Replace U501
Resolder or Replace U501
Resolder or Replace U500
Resolder or Replace U501
No
Check the voltage
C711 = 1.2V,
C710 = 1.8V
C709 = 2.8V
C708 = 2.8V
Yes
Replace the PBA
No
Check
CAM_MCLK is
24MHz (C701)
Yes
Replace
Camera Module
Yes
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-17. 5M CAM
"Camera" function does not work
Check the connection
of HDC701
Yes
Yes
END
Reconnect the HDC701
No
Resolder or Replace U501
Resolder or Replace U501
Resolder or Replace U501
No
Check the voltage
C703 = 1.2V,
C707 = 1.8V
C702 = 2.8V
Yes
Replace the PBA
No
Check
VTCAM_MCLK is
24MHz (C706)
Yes
Replace
Camera Module
Yes
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-18. TSP
Touch Screen does not work
Check TSP
Connector on
Main PBA
Yes
Yes
END
Reconnect the HDC701
No
Resolder or Replace U501
No
Check
VDD_1P8_AP=1.80V(R702),
VDD_TSP_A3P3=3.3V(C714)
Yes
Replace
OCTA Module
Yes
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
8-4-19. Motor
Motor does not work
Check the Clip on
Main PBA
ANT605, ANT606
Yes
Yes
END
Resolder or Replace :
ANT605, ANT606
No
Resolder or Replace :
C626, C625, D600, U501
No
Check
C626, C625, D600 =
3.3V
Yes
Replace
Motor or PBA
Yes
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
≤
-65dBm
8-4-20. GSM850 / WCDMA B5 / LTE B5 RX
NORMAL CONDITION
catch the channel?
Check component
soldering status OK at
U100
Check L108
≥
-65dBm
YES
YES
Resolder or change
U100
NO
NO
Resolder or change
L108
YES
NO
YES
NO
YES
NO
YES
Resolder or change
C111, C112, L110
Check C111
≥
-65dBm ?
Resolder or change
CPL100
Resolder or change
RFS100,
Check component
soldering status OK at
CPL100
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Check component
soldering status OK at
C123
Resolder or change
C123, L116
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
≤
-65dBm
8-4-21. GSM900 / WCDMA B8 / LTE B8 RX
NORMAL CONDITION
catch the channel?
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Check component
soldering status OK at
CPL100
Resolder or change
RFS100,
Resolder or change
CPL100
Resolder or change
U202
Check C111
≥
-65dBm ?
Resolder or change
C111, C112, L110
Receiver is O.K?
Resolder or change
UCP400
END
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check L108
≥
-65dBm
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L119
Resolder or change
L119, L120, L124
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
≤
-65dBm
8-4-22. DCS1800 / LTE B3 RX
NORMAL CONDITION
catch the channel?
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Check component
soldering status OK at
CPL100
Resolder or change
RFS100,
Resolder or change
CPL100
Resolder or change
U202
Check C111
≥
-65dBm ?
Resolder or change
C111, C112, L110
Receiver is O.K?
Resolder or change
UCP400
END
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check L108
≥
-65dBm
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
C193
Resolder or change
C193, L114, L115
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
≤
-65dBm
8-4-23. PCS1900 / WCDMA B2 / LTE B2 RX
YES
YES
YES
YES
YES
YES
NORMAL CONDITION
catch the channel?
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Check component
soldering status OK at
CPL100
Resolder or change
RFS100,
Resolder or change
CPL100
Resolder or change
U202
Check C111
≥
-65dBm ?
Resolder or change
C111, C112, L110
Receiver is O.K?
Resolder or change
UCP400
END
Check L108
≥
-65dBm
Resolder or change
L108
Check component
soldering status OK at
U100
Resolder or change
U100
Check component
soldering status OK at
C105
Resolder or change
C105, L107, L158
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
≤
-65dBm
8-4-24. WCDMA B1 / LTE B1 RX
YES
Check component
soldering status OK at
C102
Resolder or change
C102
NO
YES
Check component
soldering status OK at
F100
Resolder or change
F100
NO
NORMAL CONDITION
catch the channel?
Check component
soldering status OK at
CPL100
Resolder or change
RFS100,
Resolder or change
CPL100
Check C111
≥
-65dBm ?
Resolder or change
C111, C112, L110
YES
NO
YES
NO
YES
NO
YES
Check L108
≥
-65dBm
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
C194
Resolder or change
C194, L104
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
≤
-65dBm
8-4-25. LTE B20 RX
NORMAL CONDITION
catch the channel?
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Check component
soldering status OK at
CPL100
Resolder or change
RFS100,
Resolder or change
CPL100
Resolder or change
U202
Check C111
≥
-65dBm ?
Resolder or change
C111, C112, L110
Receiver is O.K?
Resolder or change
UCP400
END
YES
NO
YES
NO
YES
NO
YES
NO
YES
NO
Check L108
≥
-65dBm
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
C143
Resolder or change
C143, C149, L127
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
≤
-65dBm
8-4-26. LTE B7 RX
Check component
soldering status OK at
L139
Resolder or change
L139
NO
YES
Check component
soldering status OK at
F102
Resolder or change
F102
NO
YES
YES
NORMAL CONDITION
catch the channel?
Check component
soldering status OK at
CPL100
Resolder or change
RFS100,
Resolder or change
CPL100
Check C111
≥
-65dBm ?
Resolder or change
C111, C112, L110
YES
NO
YES
NO
YES
NO
YES
Check L108
≥
-65dBm
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L132
Resolder or change
L132, L133, L163
NO
Check component
soldering status OK at
L138
Resolder or change
L138
NO
YES
Check component
soldering status OK at
F103
Resolder or change
F103
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
NO
Resolder or change
U202
YES
Receiver is O.K?
Resolder or change
UCP400
NO
END
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
≤
-65dBm
8-4-27. LTE B40 RX
Check component
soldering status OK at
C140
Resolder or change
C140, L125, L156
NO
YES
Check component
soldering status OK at
F101
Resolder or change
F101
NO
YES
NORMAL CONDITION
catch the channel?
Check component
soldering status OK at
CPL100
Resolder or change
RFS100,
Resolder or change
CPL100
Check C111
≥
-65dBm ?
Resolder or change
C111, C112, L110
YES
NO
YES
NO
YES
NO
YES
Check L108
≥
-65dBm
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L126
Resolder or change
L126, L157
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
UCP400
END
NO
Receiver is O.K?
YES
NO
Resolder or change
U202
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 33dBm?
Check C111
: About 33dBm?
Check L108
: About 33dBm?
8-4-28. GSM850, GSM900 TX
YES
YES
YES
YES
YES
YES
YES
YES
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
Resolder or change
L108
Check component
soldering status OK at
U100
Resolder or change
U100
Check component
soldering status OK at
C103
Resolder or change
C103, L106
Check component
soldering status OK at
PAM100
Resolder or change
PAM100
Check component
soldering status OK at
L160
Resolder or change
L160, L117, C127
NO
NO
NO
NO
NO
NO
NO
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Resolder or change
U202
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check C111
: About 30dBm?
Check L108
: About 30dBm?
Check RFS100
: About 30dBm?
8-4-29. DCS1800 / PCS1900 TX
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
NO
YES
NO
YES
NO
YES
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L100
Resolder or change
L100, L102, L101
NO
YES
Check component
soldering status OK at
PAM100
Resolder or change
PAM100
NO
YES
Check component
soldering status OK at
L121
Resolder or change
L121, C137, C138, C139
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 23dBm?
Check C111
: About 23dBm?
Check L108
: About 23dBm?
8-4-30. WCDMA B1 / LTE B1 TX
YES
YES
YES
YES
YES
YES
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
Resolder or change
L108
Check component
soldering status OK at
U100
Resolder or change
U100
Check component
soldering status OK at
C199
Resolder or change
C199, L162
Check component
soldering status OK at
PAM100
Resolder or change
PAM100
Check component
soldering status OK at
L121
Resolder or change
L121, C137, C138, C139
YES
YES
NO
NO
NO
NO
NO
NO
NO
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 23dBm?
Check C111
: About 23dBm?
Check L108
: About 23dBm?
8-4-31. WCDMA B2 TX
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
NO
YES
NO
YES
NO
YES
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder
or change
U100
NO
YES
Check component
soldering status OK at
L123
Resolder or change
L123, C141
NO
YES
Check component
soldering status OK at
PAM100
Resolder or change
PAM100
NO
YES
Check component
soldering status OK at
L121
Resolder
or change
L121, C137, C138, C139
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 23dBm?
Check C111
: About 23dBm?
Check L108
: About 23dBm?
8-4-32. LTE B3 TX
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
NO
YES
NO
YES
NO
YES
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L131
Resolder or change
L131, C155, C156
NO
YES
Check component
soldering status OK at
PAM100
Resolder or change
PAM100
NO
YES
Check component
soldering status OK at
L121
Resolder or change
L121, C137, C138, C139
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder
or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 23dBm?
Check C111
: About 23dBm?
Check L108
: About 23dBm?
8-4-33. WCDMA B5 / LTE B5 TX
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder
or change
CPL100
Resolder or change
C111, C112, L110
NO
YES
NO
YES
NO
YES
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
C136
Resolder
or change
C136
NO
YES
Check component
soldering status OK at
PAM100
Resolder or change
PAM100
NO
YES
Check component
soldering status OK at
L160
Resolder or change
L160, L117, C127
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 23dBm?
Check C111
: About 23dBm?
Check L108
: About 23dBm?
8-4-34. WCDMA B8 / LTE B8 TX
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
NO
YES
NO
YES
NO
YES
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L161
Resolder or change
L161, C198
NO
YES
Check component
soldering status OK at
PAM100
Resolder or change
PAM100
NO
YES
Check component
soldering status OK at
L160
Resolder or change
L160, L117, C127
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 23dBm?
Check C111
: About 23dBm?
Check L108
: About 23dBm?
8-4-35. LTE B20 TX
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
NO
YES
NO
YES
NO
YES
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L128
Resolder or change
L128, 129
NO
YES
Check component
soldering status OK at
PAM100
Resolder or change
PAM100
NO
YES
Check component
soldering status OK at
L160
Resolder or change
L160, L117, C127
NO
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 23dBm?
Check C111
: About 23dBm?
Check L108
: About 23dBm?
8-4-36. LTE B7 TX
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
NO
YES
NO
YES
NO
YES
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L132
Resolder or change
L132, L133, L163
NO
YES
Check component
soldering status OK at
F102
Resolder or change
F102
NO
YES
Check component
soldering status OK at
L137
Resolder or change
L137, L136, C192
NO
YES
Check component
soldering status OK at
U102
Resolder or change
U102
YES
Check component
soldering status OK at
L135
Resolder
or change
L135, C169, C170
YES
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
8. Level 3 Repair
Check RFS100
: About 23dBm?
Check C111
: About 23dBm?
Check L108
: About 23dBm?
8-4-37. LTE B40 TX
Check component
soldering status OK at
CPL100
Resolder or change
RFS100
Resolder or change
CPL100
Resolder or change
C111, C112, L110
NO
YES
NO
YES
NO
YES
Resolder or change
L108
NO
YES
Check component
soldering status OK at
U100
Resolder or change
U100
NO
YES
Check component
soldering status OK at
L144
Resolder or change
L144, C195
NO
YES
Check component
soldering status OK at
F104
Resolder or change
F104
NO
YES
Check component
soldering status OK at
L143
Resolder or change
L143, C174, L145
NO
YES
Check component
soldering status OK at
U102
Resolder or change
U102
YES
Check component
soldering status OK at
L135
Resolder or change
L135, C169, C170
YES
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8. Level 3 Repair
Check the voltage at
L215 = 1.0V
&
L221 = 1.8V
Resolder
or change
U202
Receiver is O.K?
Resolder or change
UCP400
END
NO
YES
NO