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DUAL BAND Mobile
ELECTRONICS
Cellular Phone
SGH-T508
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 Diagrams
ELECTRONICS
Samsung Electronics Co.,Ltd.
Printed in Korea
02/2003 Rev 1.0
GH68-03491A
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 EAR Microphone
1-9 Data Kit
1-10 Battery Charger
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 Baseband
4-2 Main RF
4-2-1 RF Transmit Part
4-2-2 RF Receive Part
5. Flow Chart of Troubleshooting and Circuit Diagrams
5-1 Power ON
5-2 Initial
5-3 Charging Part
5-4 Sim Part
5-5 Microphone Part
5-6 Receiver Part
5-7 Key Data Input
5-8 Ring Indicator
5-9 Backlight
5-10 Melody Part
5-11 GSM Receiver
5-12 GSM Transmitter
5-13 DCS Receiver
5-14 DCS Transmitter
1. SGH-T508 Exploded Views and Parts List
1-1 Main
1
8
2
9
3
4
11 5
10
12 13 7
6
14
15
18
16
17 20
19
Exploded Views and Parts List 1-1
1-2 Main Parts List
Location NO. Description SEC CODE Remark
1 FOLDER UPPER GH75-02664A
2 LCD GH07-00278A
3 SPEAKER 3001-001345
4 MOTOR GH31-00048A
5 FOLDER LOWER GH75-02193A
6 WINDOW LCD GH72-05017A
7 SCREW 6001-001478
8 FRONT COVER GH75-02194A
9 KEYPAD GH75-02196A
10 MAIN PBA GH92-01446A
11 VOLKEY FPCB GH59-00572A
12 DOME SHEET GH59-00571A
13 MIC GH59-00610A
14 CONNECTOR COVER GH73-01338A
15 RF COVER GH73-01337A
16 ANTENNA GH42-00242A
17 REAR COVER GH75-02192A
18 VOLUME KEY GH75-02195A
19 SCREW 6001-001478
20 BATTERY GH43-00769A
1-2 Exploded Views and Parts List
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
Exploded Views and Parts List 1-3
1-5 Ciger Light Adapter
1-6 Ciger Light Adapter Parts List
DESCRIPTION SEC CODE REMARK
Ciger Light Adapter Code GH44-00170A BLACK
1-4 Exploded Views and Parts List
1-7 Test Jig
TEST JIG GH80-10508A
TEST JIG CABLE GH39-00079A
RF CABLE GH39-00090A
Exploded Views and Parts List 1-5
1-7-1 Test Jig
DC
POWER
SUPPLY
8922 or 8960
WIRELESS COMMUNICATIONS
TEST SET
RF CABLE
TEST JIG CABLE
232 CABLE
Note PC
1-6 Exploded Views and Parts List
1-8 Wearable EAR Microphone
Wearable EAR MICROPHONE GH59-00322A
1-9 Data Kit
DATA KIT GH39-00078A
1-10 Battery Charger
BATTERY CHAGER GH44-00234A
Exploded Views and Parts List 1-7
2. PCB Diagrams
2-1 Main Top
C603
C602 C601
R109
SOFT2
D110
SYMBOL#
U106
END R107
R240
C102
C103
LED202
DIGIT3 DIGIT6
DIGIT9 U100
C615
R608
C202 R216
C203
L605
U204
LED207
R108
U602
L604
RIGHT C122
LED204
LED200
R215
R242
R212
R206
C608 C123 C128
U601
C611
DOWN
U603 R691
V304
C613
LED208 R607
CLR
C213 UP V303 U108
INT
C211 C219
C209
V308
R244
C214
DIGIT2 DIGIT5 DIGIT8 DIGIT10 C303 C120
V302 C305
C210 R243 V305 L300
C218 L201 R309 C304
R316 C313
R317 C314 C312
R213
LED201
LED205
R214
R241
C311
R318
LED206
LEFT
L410
U301
SYMBOL*
V400 C310
C422 C309
C421 C390
DIGIT7
C419
C418
SEND
SOFT1
LED203
C424 DIGIT1 DIGIT4
R312
C425
R211
R314
V404
C307
V202
V203
V204
CN201 R419
2-1 PCB Diagrams
PCB Diagrams
V403
CN600 F200 F202
V290
L606
EAR400
CN205
L607
A500 C212
V402
C690
V405 C427 V401
U605
V210
F203
L200
F201 R319 C315
C630
R692 C115
H100 C600 R237
R690
U205
C117
R236
L504
C691
C605 C614 U105
C604 C612
U505
R514 C116
C617
C500 C121
U501 U500
C503
U600
C518
C516
L500
L502
U502
L603
C502
C616
U504
C515
C504 C514
C501 C513
C506
L501
L602 L503
C505
R503 C508
R504 R502 C507
C607
R413
U503
R509 R507 C511 C509 C510
R603R604 R510 C124 R505
R517 R518 C517
C126
U107 C519 R515
C433 R513 Q500
D111
R521
R522
R523
R530
R511
C512
C432 R520
U203 U202 C401 C125 C127 R516 R519
C400
C441
V220
R208R209
R400 C405
R401 C404
R402 C403
R403 C402
R406
R404
R407
R410
R438R439
U200
L601
R101 C106
C434
TH200
C201
R205
C442 C406 C407
U404 U403 H101
U101
R426 C217
R111
TP404
R440
R441
C108 C107
R435
TP403 TP402 TP400 TP401
C428
C429 C420
OSC400C417
C436 C415
C439 R429
U401
C444 R427
C443 C416
C445 R423
R421 R422
C437 C446
C440
C426 R425 C423
C414
CN100 R414
R416
R433 R424
R436
R434
R437
C435
C438
R411
C409
R417
R432
R409
R415
R418
R412
Q201
U402
R103 C109
Q100
R104
R217
C118
C301 C300
R218
U300
C114
R112 C151
U102 U104
C408
R408
H102 U103
R110
C119 C150 U400
U302
C113
C160
R307
R310
C112 C431 C430 C413 C412 C410
C105 R304
R100 R302
TP405
C111 R431 R430 V407 C411 V406
CN300 C101 BAT100
C104
V300
MIC1
ZD300
R311
D100
C302
H103
V301
C317 C316
R106
R105 C100 CN301
2-2 Main Bottom
JT1 JT3 JT2 JT5 JT4 JT6 JT7 JT8 JT9 JT10 JT11 JT12 JT13 JT14 JT15
2-2
3. Electrical Parts List
3-1 Main Parts List Top
LEVEL SEC CODE REFERENCE LEVEL SEC CODE REFERENCE
2 0601-001611 LED200 2 2007-007137 R317
2 0601-001611 LED201 2 2007-007309 R691
2 0601-001611 LED202 2 2007-007313 R318
2 0601-001611 LED203 2 2007-007771 R312
2 0601-001611 LED204 2 2007-007771 R316
2 0601-001611 LED205 2 2007-000162 R419
2 0601-001611 LED206 2 2007-007009 R211
2 0601-001611 LED207 2 2007-007009 R212
2 0601-001611 LED208 2 2007-001290 R241
2 0407-001007 D110 2 2007-001290 R241
2 0504-001042 U601 2 2007-007009 R215
2 0504-001042 U602 2 2007-007009 R240
2 0504-001042 U603 2 2007-001290 R241
2 0506-001004 U106 2 2007-007009 R242
2 1009-001010 U204 2 2007-007771 R206
2 1203-002077 U100 2 2007-000148 R309
2 1203-002156 U108 2 2007-000162 R107
2 1204-001960 U301 2 2007-000162 R108
2 1405-001082 V305 2 2007-000162 R109
2 1405-001082 V400 2 2203-000438 C307
2 1405-001082 V404 2 2203-005061 C309
2 1405-001093 V302 2 2203-005061 C310
2 1405-001093 V303 2 2203-002687 C314
2 1405-001093 V304 2 2203-000679 C209
2 1405-001093 V308 2 2203-000679 C210
2 1405-001121 V202 2 2203-000679 C211
2 1405-001121 V203 2 2203-000679 C213
2 1405-001121 V204 2 2203-000679 C214
2 2007-000138 R244 2 2203-000679 C218
2 2007-000157 R216 2 2203-000679 C219
2 2007-001325 R314 2 2203-000854 C421
2 2007-007009 R243 2 2203-000854 C424
2 2007-007107 R607 2 2203-001017 C422
2 2007-007107 R608 2 2203-001017 C425
3-1 Electrical Parts List
LEVEL SEC CODE REFERENCE
2 2203-005061 C313
2 2203-005483 C311
2 2203-000438 C608
2 2203-000679 C611
2 2203-000679 C613
2 2203-000679 C615
2 2203-000812 C601
2 2203-002443 C203
2 2203-005061 C202
2 2404-001086 C312
2 2203-000233 C602
2 2404-001105 C603
2 2203-000679 C303
2 2203-000679 C304
2 2203-005061 C305
2 2203-000254 C103
2 2203-000254 C120
2 2203-005061 C102
2 2203-005061 C123
2 2203-005061 C128
2 2404-001105 C122
2 2007-007771 L604
2 2007-007771 L605
2 3301-001362 L201
Electrical Parts List 3-2
3-2 Main Parts List Bottom
LEVEL SEC CODE REFERENCE LEVEL SEC CODE REFERENCE
2 0601-001611 LED200 2 2007-007313 R318
2 0601-001611 LED201 2 2007-007771 R312
2 0601-001611 LED202 2 2007-007771 R316
2 0601-001611 LED203 2 2007-000162 R419
2 0601-001611 LED204 2 2007-007009 R211
2 0601-001611 LED205 2 2007-007009 R212
2 0601-001611 LED206 2 2007-001290 R241
2 0601-001611 LED207 2 2007-001290 R241
2 0601-001611 LED208 2 2007-007009 R215
2 0407-001007 D110 2 2007-007009 R240
2 0504-001042 U601 2 2007-001290 R241
2 0504-001042 U602 2 2007-007009 R242
2 0504-001042 U603 2 2007-007771 R206
2 0506-001004 U106 2 2007-000148 R309
2 1009-001010 U204 2 2007-000162 R107
2 1203-002077 U100 2 2007-000162 R108
2 1203-002156 U108 2 2007-000162 R109
2 1204-001960 U301 2 2203-000438 C307
2 1405-001082 V305 2 2203-005061 C309
2 1405-001082 V400 2 2203-005061 C310
2 1405-001082 V404 2 2203-002687 C314
2 1405-001093 V302 2 2203-000679 C209
2 1405-001093 V303 2 2203-000679 C210
2 1405-001093 V304 2 2203-000679 C211
2 1405-001093 V308 2 2203-000679 C213
2 1405-001121 V202 2 2203-000679 C214
2 1405-001121 V203 2 2203-000679 C218
2 1405-001121 V204 2 2203-000679 C219
2 2007-000138 R244 2 2203-000854 C421
2 2007-000157 R216 2 2203-000854 C424
2 2007-001325 R314 2 2203-001017 C422
2 2007-007009 R243 2 2203-001017 C425
2 2007-007107 R607 2 2203-005061 C313
2 2007-007107 R608 2 2203-005483 C311
2 2007-007137 R317 2 2203-000438 C608
2 2007-007309 R691 2 2203-000679 C611
3-3 Electrical Parts List
LEVEL SEC CODE REFERENCE
2 2203-000679 C613
2 2203-000679 C615
2 2203-000812 C601
2 2203-002443 C203
2 2203-005061 C202
2 2404-001086 C312
2 2203-000233 C602
2 2404-001105 C603
2 2203-000679 C303
2 2203-000679 C304
2 2203-005061 C305
2 2203-000254 C103
2 2203-000254 C120
2 2203-005061 C102
2 2203-005061 C123
2 2203-005061 C128
2 2404-001105 C122
2 2007-007771 L604
2 2007-007771 L605
2 3301-001362 L201
Electrieal Parts List 3-4
4-1
SIM CARD
BB INTERFACE
Serial Data
Interface
Battery
Type
VIBRATOR I/O
Interface
MIC Battery
4-1 Main Baseband
Voltage
A/D Battery
SPEAKER
Interface
4. Block Diagrams
Temperature
ONE C
Charging
RF INTERFACE Current
SYSTEM CLOCK
(13MHz)
AFC
XVCC
SRAM
PLL 3VRF
Li-Ion Battery
FLASH
(Standard)
VDD3.0
EEPROM AVCC2.5
Charging
RTC_CLOCK DVCC2.5
Circuit
(32.768KHz)
KEYPAD
LCD RTC_VCC
LED_3V3
Block Diagrams
Block Diagrams
4-2 Main RF
Si4200 (U502) Si4201 (U503)
EGSM RX U501
925~960 MHz
(CH62 : 947.4 MHz) SAW
LNA PGA ADC PGA DAC I
Filter
Mixer
Filter
U500
Channel
SAW
LNA PGA ADC PGA DAC Q
Filter
DCS RX
1805~1880 MHz
(CH698 : 1842.4 MHz) 100
kHz
RF Antenna
Conector S/W Si4133T (U505) VP40578
(CN600) (U605)
RF IF VCTCXO (U401)
(U504)
PLL PLL
DCS TX
SDATA
1710 ~ 1785 MHz
SCLK
(CH698 : 1747.4 MHz) SENB
Dual PAM PDNB
(U600)
PD
I
LPF Q
EGSM TX
880 ~ 915 MHz
(CH62 : 902.4 MHz)
Bryce Park
4-2
4-3
3VRI
BANDSEL
_BANDSEL
VC1 VC2 Si4133-T (U505)
Ant. S/W
Tx(GSM) L H
Control
TXEN Tx(DCS) H L
Circuit from U401 Rx L L
23,24
VC1 VC2 1 RF 2 VCTCXO
1279 ~ 1314 MHz
AFC
PLL (U504)
2 11 1327 ~ 1402 MHz 7 4
4-2-1 RF Transmit Part
RF Antenna 880~895 MHz : 798 MHz
8 IF 895~900 MHz : 790 MHz
Conector S/W
PLL 900~915 MHz : 798 MHz
(CN600) (U605)
766 MHz
PDNB
9
-6dBm
5 3 26,27 -6dBm
@ 1301.4 MHz (G)
EGSM TX DCS TX -9dBm @ 798 MHz
880 ~ 915 MHz 1710 ~ 1785 MHz @ 1364.4 MHz (D) -9dBm
(CH62 : 902.4 MHz) (CH698 : 1747.4 MHz) @ 766 MHz
12,13 9,10
VP40578
31
/2 (U401)
Dual PAM
(U600)
1 5
PD 3
11 24 6 I
7
7 8 Q
LPF
9 25
Si4200 (U502)
SDATA
SCLK
SENB
2 Txpower
2
+VBATT Txpower
from U401
TXEN 1
3VRF
Bryce Park
BAND Selection
VREG
Block Diagrams
Block Diagrams
Si4200 (U502) Si4201 (U503)
4 5 1
-52dBm 1,2
LNA PGA ADC PGA DAC 4 I
21,22 11,12
-50dBm (G)
4-2-2 RF Receive Part
Mixer -54dBm (D)
@ 67 kHz
Filter
3
Channel