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DUAL BAND Mobile
ELECTRONICS
Cellular Phone
SGH-T108
SERVICE Manual
DUAL BAND MOBILE CELLULAR PHONE CONTENTS
1. Exploded Views and Parts List
2. PCB Diagrams
3. Electrical Parts List
4. Block Diagrams
5. Flow Chart of Troubleshooting and
Circuit Diagram
ELECTRONICS
Samsung Electronics Co.,Ltd.
Printed in Korea
03/2002. Rev 1.0
GH68-02700A
1. Exploded Views and Parts List
1-1 Main
1-2 Main Parts List
1-3 Travel Adapter
1-4 Travel Adapter Parts List
1-5 Ciger Light Adapter
1-6 Ciger Light Adapter Parts List
1-7 Test Jig
1-8 Wearable EAR Microphone
1-9 Data Kit
1-10 Battery Charger
1-11 Downloading Cable
1-12 PCLink for GSM Ver1.0
2. PCB Diagrams
2-1 Main Top
2-2 Main Bottom
3. Electrical Parts List
3-1 Main Parts List Top
3-2 Main Parts List Bottom
4. Block Diagrams
4-1 Main Base Band
4-2 Main RF
4-2-1 RF Tx Part
4-2-2 RF Rx Part
5. Flow chart of Troubleshooting and Circuit Diagram
5-1 Power ON
5-2 Initial
5-3 Charging Part
5-4 Sim Part
5-5 Microphone Part
5-6 Speaker Part
5-7 Key Data Input
5-8 Receiver Part
5-9 Ring Indicator
5-10 Back Light (for Color Main LCD)
5-11 Back Light (for sub LCD & Key)
5-12 GSM Receiver
5-13 GSM Transmit
5-14 DCS Receiver
5-15 DCS Transmit
1. SGH-T108 Exploded Views and Parts List
1-1 Main
1
2
9
3
3-1
3-2
4
10
11-1
11
11-2
5
6
11-3
7
12
8
13
15
14
16
17
18
19
Exploded Views and Parts List 1-1
1-2 Main Parts List
Location
No. Description SEC CODE Remark
1 DUAL WINDOW LCD GH72-03659C
2 FOLDER UPPER GH75-01772A
3 LCD GH96-00964A
3-1 MOTOR 3101-001243
3-2 SPEAKER 3001-001268
4 FOLDER LOWER GH75-01773A
5 SCREW 6001-001285
6 SCREW CAP(LEFT) GH74-01466A
7 SCREW CAP(RIGHT) GH74-01467A
8 WINDOW LCD GH72-01239A
9 FRONT COVER GH75-01776A
10 KEY PAD GH75-01775A
11 MAIN PBA GH92-01273A
11-1 FPCB ASS'Y GH59-00366A
11-2 DOME SHEET GH59-00365A
11-3 MIC GH59-00336A
12 CONNECTOR COVER GH73-00741A
13 VOLUME KEY GH75-01205A
14 REAR COVER GH75-01777A
15 ANTENNA GH42-00164A
16 MOBILE CAP GH73-00950A
17 SCREW 6001-000464
18 BATTERY GH43-00467A
19 BATTERY GH43-00468A
1-2 Exploded Views and Parts List
SGH-T108 COLOR & CODE
COLOR
SILVER WHITE PEARL GOLD METALIC BLUE
ITEM
MEC-FOLDER DUMY GH75-01774A GH75-01774A GH75-01774B GH75-01774A
MEC-FOLDER UPPER GH75-01772A GH75-01772B GH75-01772C GH75-01772D
MEC-FOLDER LOWER GH75-01773A GH75-01773B GH75-01773B GH75-01773D
MEC-FRONT COVER GH75-01776A GH75-01776B GH75-01776C GH75-01776D
MEC-REAR COVER GH75-01777A GH75-01777B GH75-01777C GH75-01777D
MPR-SCREW CAP LEFT GH74-01466A GH74-01466B GH74-01466D GH74-01466G
MPR-SCREW CAP LEFT GH74-01467A GH74-01467B GH74-01467D GH74-01467G
BATTERY-700M GH43-00467A GH43-00467B GH43-00467C GH43-00467D
BATTERY-900M GH43-00468A GH43-00468B GH43-00468C GH43-00468D
Exploded Views and Parts List 1-3
1-3 Travel Adapter
A B
C D
1-4 Travel Adapter Parts List
TYPE SEC CODE REMARK
A GH44-00171A CHINA
B GH44-00184A EUROPE
C GH44-00171C UNITED KINGDOM
D Gh44-00171E TAIWAN
1-3 Exploded Views and Parts List
1-5 Ciger Light Adapter
1-6 Ciger Light Adapter Parts List
DESCRIPTION SEC CODE REMARK
Ciger Light Adapter Code GH44-00170A BLACK
Exploded Views and Parts List 1-5
1-7 Test Jig
TEST JIG GH80-10508A
TEST JIG CABLE GH39-00079A
RF JIG CABLE GH39-00140A
1-5 Exploded Views and Parts List
DM CABLE GH39-00080A
1-7-1 Test Jig
DC
POWER
SUPPLY
8922 or 8960
WIRELESS COMMVNCATIONS
TEST SET
RF JIG CABLE
TE
ST
JIG
232 CABLE
TEST JIG CABLE
Exploded Views and Parts List 1-7
1-8 Wearable EAR Microphone
Wearable EAR Microphone GH59-00394A
1-9 Data Kit
DATA KIT GH39-00078A
1-7 Exploded Views and Parts List
1-10 Battery Charger
BATTERY CHARGER GH44-00279A
1-11 Downloading Cable
DOWNLOADING CABLE GH39-00143A
1-12 PCLink for GSM Ver1.0
PCLINK FOR GSM VER1.0 GH46-00023A
Exploded Views and Parts List 1-9
PCB Diagrams
LED802
2-1 Main Top
V403 LED801
R809
C818
C311
C307
C306
C310
V402
C304 C315 C440
C439
C314 SW801 Q801
U201 R310 R313
C312 C313 ZD401 R811
C800 R814
C216 R319 R312 R812
2. PCB Diagrams
U303 C801 Q802
R323 R314
C811
R306 C442 R810
U801
R807 C802
C309 C316
V404
C451
C441 R813
C301
U301 R304 C461 V400 D806
Q804 Q803
R305
R823
R308
C308
C305
UP C806
INT
LEFT
RIGHT
SOFT1
SOFT2
D802
R804
D801
R803
DOWN
D807
R808
SEND END
S_KEY
CLR
DIGIT1 DIGIT3
C809
DIGIT2
D803 D800
R801
DIGIT4 C804
DIGIT6
C805
C807
DIGIT5
DIGIT7 DIGIT9
R802
DIGIT8 R805
C810
D805 D804
R806 C803
SYMBOL* SYMBOL#
DIGIT10
C816
R122 C123
RS232RTS
R119
R124 RS232TXD
ZD202 RS232CTS
RS232RXD
ZD203
C121
U107 R211 R212 MIC
F200 F201
ZD402
ZD400
C128
2-1
2-2
V405
C462
C452
CN401
R236 C210
U708 C206
CN201
R237
R238 R230
C211 C207 C205
C218 R235
ANT1
L720
V401
L700 R240 C209
C714 C202 R234
V3 U706 R202
R822
C815
R233
C204
R232
C201 C208
L706 L707 R231
C701
C217
C715 C717 C203
R200 R201 C230
R712
R717
C719
L705
U700 U702 C718
F605 L704 U704 U703 U705
V1
R718 R715
R710 R713
U202
C712
R709 R716
F602
R722
L702
R721
C721
R719
C716
R720
C720
L703
C700
C710 C711
U707
Q700
R711
R714
R706 C709
L611 C630
C650 C629
L610 L608
C624 C614
L605 C615
C619 R602
L602 C601
C621 C602
R600
C606
U701
C500
C506
C503
R707 L612 C622 C510
C708 L722
R708 C707
L607
C628 C502
F601
C635
C739
C501
U501
C626
Q502
C633
R508
C705
C642 C643
C644 R606
C511
R705
C706
C600
C513
R601 L603
C610 C617
R704 C604 C512
Q501 R703 L601 L721
U601
C608
C641
R608
R609
C648
C649
R607
C640
R702
R701
C515 R700 C504
L600
C405 C410
R411
R407 C616
C612
C516 R405
C603
C611
C607
C646
C618
C509 R504 R506
R505
R503
R406 R507
U500
C623 C508
U602
C625
L606
F604
R500 R501
R502 C507
C645
R605 L604 Q500
C637
C634
C636
F607
C639
C638
R604 C631 C609 C613
C647 R603 C605 C505
C444
R428 C420
C414 C424
C418
C430
C438
C517
R417 C436 C429 C434
C431 C422
C403
R450
C449
R434 C457 C514
C518
X400
U403
R431 R827 R426 C421 R446
R826 R443 R445
R447
C521
R425
C428
C437
R430 R409
ZD802
C443 C404 C413
R448
U502
ZD801 R421
C435 R401 R410
R315 R513 C520
R440 JACK_IN
U803
R424 C463
C446
C412 U802
C454 E_SW
R109 R439 R511
TH101 C453
U302
R300
C433
R416
C427
C426 R302
C814
R429
R413
C118 R438 C812
C432 U300 C300 Q503
R441
R435
R301 R120
F608
R437 R414
C409 R400 R427 R408 R821 R423 C122 C132
C408 R402
U421 C407 R403
U400 U305
C120
R115
R111
C406 R404
C445
C450
C419
C417
C415
C416
R113 C119
C317
C318
V300
R442
D101 R112 C425
R114 C423
C106 R433 C447 C448 R432
U401
CN101 TDI TDO
RD
C107 R317
R321
U304 TCK
MRST
TMS
U104
C102
C131
C130
C126
U103
C101
R324
U105
C303 U106
C302 R825 C105 C129
R824
R436
R117 R116 C108 R320 C320 C808 R322 C319
C114
C115 C112 C109 R123
C100
D100
C113 R107
C110
C111
C125
V2 U101 U102 R103
C104
BAT101
R106 C103
V4
V206 V205
C215
C817
C214
V208
V209
R209
R208
V207
L209
C212