07. GT i9300 TSHOO 7, Samsung GALAXY S3 GT-I9300, i9300 Service Manual

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8. Level 3 Repair
8-1. Block Diagram
REC_PCM_CLK
REC_PCM_IN
REC_PCM_OUT
REC_PCM_SYNC
SPEECH_PCM_CLK
SPEECH_PCM_IN
SPEECH_PCM_OUT
SPEECH_PCM_SYNC
2G_TX_LB
2G_TX_HB
3G_LB
3G_HB
3G_TX
2G/3G_RX
3G_TX
8-1
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Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
 Level 3 Repair
8-2. PCB Diagrams
8-2-1. Top
U606
SC313
C10 8
C109
C133
C132
C708
R702
R705
L114
SC311
SC309
U700
R325
R326
R327
R328
R329
C197
U106
L116
C349
C350
C114
C751
C752
R330
U104
TP_604
TP_603
TP323
TP_329
TP_330
TP_331
R109
TP_601
TP_602
U707
TP_605
C343
SC314
TP517
R612
C174
L129
TP711
C112
C621
R744
R324
L104
L105
R746
R322
R323
L130
C351
R752
L128
C172
C753
C754
U715
C152
L127
C764
TP_100
C193
R706
C156
R466
R467
R446
L122
R217
C437
C438
C104
C102
C145
R718
C411
C412
C724
R410
R411
C723
SC315
R418
TH401
R421
R729
C255
C256
C740
R731
R732
R222
U504
Q201
R728
C249
C243
C252
R220
R511
SC304
SC305
CN301
ANT501
ANT500
C615
ZD600
C664
L607
R626
C606
C655
C656
R629
R630
C628
C625
C626
C647
C624
L615
C617
R617
R619
R624
ZD604
L611
C704
C714
R528
U509
U703
C591
R521
C660
C662
R530
R531
ANT200
V602
L612
C658
8-2
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.
 Level 3 Repair
8-2-2. Bottom
BOTHHOLE107
BOTHHOLE100
IFC700
MIC600
V600
L601
KEY500
BOTHHOLE106
ZD501
R435
R534
BOTHHOLE104
BOTHHOLE102
TP300
L301
U600
F700
ZD701
R342
L300
C314
R742
R741
L302
L703
C342
U502
C318
C329
C330
C331
R300
C309
C348
R305
R306
R307
R308
C315
R313
R302
R303
R315
R333
C729
C734
C766
TP313
TP311
TP310
TP506
R717
R474
R319
R438
C333
R428
C407
TP505
R301
TP328
R526
L500
C246
L706
C718
U704
C565
U206
C561
R513
C566
C567
C587
C554
R420
R417
C582
L507
R518
R519
R476
C595
C546
C573
R501
UCP400
R465
TP_AP_D
C532
C568
C569
L512
C450
C515
C594
C553
TP207
C574
L508
C525
C417
C418
L506
C421
C422
R447
R448
C544
C535
R457
TP509
C555
C531
TP401
TP508
FM_RST
TP211
R461
C237
R460
C238
TP212
BOTHHOLE101
R200
C203
C269
C270
C236
C235
U203
R202
TP205
SW600
OSC200
L204
TP204
C211
C206
C207
L202
C640
C636
C631
C632
C644
C452
L700
8-3
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.
 Level 3 Repair
8-3. Flow Chart of Troubleshooting
Equipments
Ç
Oscilloscope
Ç
Digital Multimeter
Ç
Power Supply
Ç
+ driver, ESD Safe Tweezer
Ç
8960 & Spectrum Analyzer
Ç
Soldering iron
8-4
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.
 Level 3 Repair
8-3-1. Power On
Cell-phone can`t power on.
Charging the battery by TA.
If its voltage level is extremely low(under 3.0V),
Change the battery.
No
Check the Battery Voltage.
Is it more than 3.4V?
Yes
Power-on the phone and check
the power-on sound
or motor biration.
Sound or Biration is ok?
Yes
Change the MEA FRONT-OCTA LCD ASSY
No
Abnormal
Change the SW600(Power-key)
And retry to the power-on operation.
Check the SW600
(soldering crack, open, etc)
Yes
If the output voltage is not satisfied with normal
condition, Change the U501.
※
Each voltage will be changed from 0.9V to
1.3V during booting.
Check the U500 output voltage
(C561 =1.0V, C559 =1.1V,
C558 =1.0V, C556 =1.0V)
No
Yes
If the output voltage is not satisfied with normal.
condition, Change the U500.
※
Each voltage level has ±10% margin.
No
Check the U500 output signal
(AP_PS_HOLD(TP) >1.8V)
Yes
Change the OSC500.
If OSC400 does not still work, Change the U501
This problem is internal oscillator of U501.
No
Check the Clock OSC500(C505)
Is that frequency 32Khz?
※
Test condition (Oscilloscope setting)
:20.0us.div (time division)
Yes
check the initial operation
Yes
END
8-5
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.
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