Samsung SGH SGH X105 User manual

SGH-X105
SERVICE
Manual
GSMTELEPHONECONTENTS
1.Specification
2.ExplodedViewsand PartsList
3.ElectricalPartsList
4.FlowChartofTroubleshooting
5.BlockDiagrams
6.PCB Diagrams
GSMTELEPHONE

ELECTRONICS
Samsung ElectronicsCo.,Ltd.AUG.2003
Printedin Korea.
CodeNo.:GH68-04199A
BASIC.
ⓒ
ThisServiceManual isa propertyofSamsung ElectronicsCo.,Ltd.
Anyunauthorized use ofManualcan bepunished underapplicable
Internationaland/ordomesticlaw.

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1. SGH-X105 Specification
1-1
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GSM900
Phase1EGSM900 Phase2DCS1800 Phase1PCS1900
Freq.Band[MHz]
Uplink/Downlink 890~915 935~960 880~915 925~960 1710~1785 1805~1880 1850~1910 1930~1990
ARFCNrange1~124 0~124 &
975~1023 512~885 512~810
Tx/Rxspacing 45MHz45MHz95MHz80MHz
Mod.Bit rate/
Bit Period 270.833kbps 3.692us270.833kbps 3.692us270.833kbps 3.692us270.833kbps 3.692us
TimeSlot
Period/FramePeriod 576.9us 4.615ms576.9us 4.615ms576.9us 4.615ms576.9us 4.615ms
Modulation 0.3GMSK0.3GMSK0.3GMSK0.3GMSK
MS Power33dBm~13dBm33dBm~5dBm30dBm~0dBm30dBm~0dBm
PowerClass 5pcl~15pcl5pcl~19pcl0pcl~15pcl0pcl~15pcl
Sensitivity-102dBm-102dBm-100dBm-100dBm
TDMAMux 8 8 8 8
Cell Radius35Km35Km2Km-
1.GSMGeneralSpecification

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SGH-X105 Specification
1-2
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TXPower
control levelGSM900
5 33±2 dBm
6 31±2 dBm
7 29±2 dBm
8 27±2 dBm
9 25±2 dBm
10 23±2 dBm
11 21±2 dBm
12 19±2 dBm
13 17±2 dBm
14 15±2 dBm
15 13±2 dBm
16 11±3 dBm
17 9±3dBm
18 7±3 dBm
19 5±3 dBm
TXPower
control levelPCS1900
0 30±3 dBm
1 28±3 dBm
2 26±3 dBm
3 24±3 dBm
4 22±3 dBm
5 20±3 dBm
6 18±3 dBm
7 16±3 dBm
8 14±3 dBm
9 12±4 dBm
10 10±4 dBm
11 8±4dBm
12 6±4 dBm
13 4±4 dBm
14 2±5 dBm
15 0±5 dBm
2.GSMTXpower class

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2. SGH-X105 ExplodedViewand its Partslist
2-1
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1.CellularphoneExplodedView
1
5
2
7
8
9
4
3-1
3-6
3-3
3-4
3-2
3-5 3
6

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SGH-X105 Explodedviewand its Partlist
2-2
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Location
No.DescriptionSEC CODE Remark
1FRONTCOVER GH75-03140A
2KEYPADGH75-03142A
3MAINPBAGH92-01510A
3-1MICGH30-00041A
3-2DOMESHEETGH59-00942A
3-3SCREW6001-001479
3-4INTENNAGH42-00314A
3-5LCDGH07-00385A
3-6SPEAKER 3001-001442
4CONNECTORCOVER GH73-02097A
5VOLUMEKEYGH75-03143A
6MOTORGH31-00062A
7REARCOVER GH75-03141A
8SCREW6001-001479
9BATTERYGH43-00980A
2.CellularphonePartslist

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SGH-X105 Explodedviewand its Partlist
2-3
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3.TestJig(GH80-00865A)
3-1.RFTestCable
(GH39-00090A)3-2.TestCable (GH00-00127A)3-3.SerialCable
3-4.PowerSupplyCable3-5.DATACABLE
(GH39-00159A)3-6.TA (GH44-00184A)

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3. SGH-X105 MAIN ElectricalParts List
ThisDocumentcan notbe used withoutSamsung'sauthorization
3-1
SEC Code Design LOC
2203-000812 C101,C103,C104,C216
2203-005061 C102,C106,C107,C113
2203-001598 C105
2203-006053 C108,C109,C110,C111
2203-006053 C112,C115,C117,C118
2203-006201 C114
2203-000233 C116,C125,C126,C127
2404-001268 C119,C120,C122
2203-000995 C121,C405
2203-005061 C123,C130,C207,C214
2203-000233 C128,C129,C205,C213
2203-006307 C131
2404-001164 C132
2203-005682 C133,C134,C135,C136
2203-005682 C137,C138,C139,C140
2203-005682 C141,C142,C143,C144
2203-005682 C145,C146,C147,C148
2203-005682 C149,C150,C151,C152
2203-001153 C153,C154,C155,C156
2203-001153 C157,C158,C159,C160
2203-001153 C161,C162,C241
2203-000679 C202,C203,C255,C311
2203-000654 C206,C426
2203-001405 C208,C310,C401,C403
2404-001086 C209,C218
2203-000812 C217,C226,C406,C427
2203-000438 C219,C430,C432,C434
2203-005061 C220,C224,C262,C309
2203-000233 C221,C236,C319,C321
2203-005065 C222,C225,C252
2203-005496 C223,C301,C302
2203-000359 C228
2203-000278 C229,C246,C257,C258
2203-000254 C230,C231,C232,C233
2203-000854 C235,C253,C261
2203-000254 C237,C238,C239,C240
2203-005052 C242
SEC Code Design LOC
2404-001105 C245,C250
2404-001282 C247
2203-001072 C248,C251
2203-000386 C254
2203-005056 C259
2203-005503 C260
2203-000254 C303,C304,C305,C306
2203-000254 C307,C308,C312,C329
2203-005061 C315,C316,C324,C330
2203-000628 C320,C322
2203-002525 C326
2203-000233 C327,C328,C333,C402
2203-005061 C331
2203-005480 C332
2203-001405 C404,C407,C411,C424
2203-002677 C408,C410
2203-000233 C414,C419,C440
2203-005234 C415,C416
2203-000278 C417,C425,C433
2404-001134 C420,C421
2203-000254 C423,C435,C437,C438
2203-002668 C429
2203-001405 C431
2203-000438 C436
2203-000254 C439
3709-001250 CN100
3710-001105 CN101,CN205
3710-001611 CN201
3710-001853 CN202
3705-001287 CN400
3722-001880 CN401
0407-000115 D100
2901-001260 F105,F106,F107,F108
2901-001260 F109
2909-001191 F400
2904-001410 F401
2703-002112 L100

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SGH-X105 ElectricalPartsList
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3-2
SEC Code Design LOC
2703-002313 L301
2703-001907 L402
2703-001207 L404
2703-001751 L405
2703-001543 L406
2703-001737 L407
0601-001647 LED100,LED101,LED102
0601-001647 LED103,LED106,LED107
0601-001647 LED108,LED109,LED110
0601-001647 LED111,LED112,LED113
0601-001402 LED200
4302-001130 M1
2801-003856 OSC300
2809-001260 OSC400
0504-001113 Q100
0502-001201 Q101
0504-000168 Q102,Q400
0504-000167 Q200,Q201
0504-001042 Q203,Q204,Q205
2007-000174 R101,R102,R103,R104
2007-000174 R105,R106,R107,R108
2007-000174 R109,R111
2007-000171 R112,R115,R209,R217
2007-000758 R113,R242
2007-007137 R114
2007-003010 R117,R118,R119,R120
2007-003010 R121,R122,R123,R124
2007-003010 R125,R126,R127,R128
2007-007142 R129,R130,R306
2007-007139 R131
2007-001323 R132
2007-002965 R133,R135
2007-000151 R134,R204,R205,R208
2007-000162 R202,R212,R218,R234
2007-007014 R203
2007-000775 R206
2007-001325 R210,R211
SEC Code Design LOC
2007-000148 R213,R230,R415
2007-000636 R214
2007-007200 R215,R216
2007-000141 R219,R225
2007-001119 R220
2007-000171 R221,R222,R224,R236
2007-000140 R223,R231,R232,R233
2007-000157 R228,R229,R301,R304
2007-000140 R235,R239,R246,R247
2007-000171 R237,R238,R243,R248
2007-007590 R240
2007-000165 R241
2007-000139 R244
2007-000138 R245,R416
2007-000172 R249,R251,R313,R314
2007-000171 R250,R312,R317,R320
2007-000170 R302
2007-007107 R305
2007-007573 R308,R310
2007-000172 R315
2007-000157 R316
2007-000171 R401,R406
2007-000029 R402
2007-003010 R403
2007-001311 R404,R405
2007-001291 R407
2007-001307 R408,R409
2007-000162 R410
2007-001306 R412,R417
2007-000242 R413
2007-002797 R414
3404-001152 SW201,SW202
1203-002902 U100
1203-002127 U101
0506-001052 U102
1203-001518 U103
1203-002633 U105

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SGH-X105 ElectricalPartsList
ThisDocumentcan notbe used withoutSamsung'sauthorization
3-3
SEC Code Design LOC
1204-001984 U200
1204-001261 U201
GH09-00024AU301
1209-001219 U302
1109-001278 U304
1205-002185 U400
1205-002268 U401
1201-001954 U402
1209-001434 U403
0801-002345 U404
1405-001112 ZD101,ZD113
0404-001172 ZD111
0406-001167 ZD112
0403-001446 ZD114
0403-001427 ZD205
1405-001082 ZD206,ZD207,ZD208
1405-001018 ZD209,ZD219
1405-001082 ZD218,ZD404,ZD409
1405-001082 ZD410,ZD411
0406-001083 ZD412,ZD413,ZD414

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4. SGH-X105 FlowChart of Troubleshooting
4-1
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1.Power On
Currentconsumption
>=100mA
'PowerOn'doesnotwork
Voltage>= 3.3V
Downloadagain
ChargetheBattery
pin#11 >= 2.8VCheckU100 andC116
pin#39 andpin#33 =
2.8V
CheckU100 andC115
Checktheclock
signalatpin4of
OSC400
Freq=13MHz,
Vrms≥300mV
and
Vpp =900mVpp
Checktheclockgenerationcircuit
(related toOSC400,U401 pin19)
END
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
pin#9=1.8VNo
Yes
ChecktheVbat.Voltage
CheckthepinofU100
Checktheinitialoperation
Checkthecurrentconsumption

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SGH-X105 FlowChartofTroubleshooting
4-2
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2.Initial
Thepin#9ofU100 =1.8V
and
thepin#10 ofU100 =
2.825V?
InitializationFailure
ChecktheU100
(Ifithas someproblem,ithastobe
replaced.)
END
No
Yes
Isthepin#19 of
U100
"Low-> High"?
Yes
ChecktheU301
Thereis32.768kHz
waveformsat theC320
andC322
ChecktheLCDPart
Yes
No
No
Yes
Yes
Yes
TheVoltageis"High"
at theC111,C118
ChecktheAudioPart
No
ChecktheU100
(Ifithas someproblem,ithastobe
replaced.)
ChecktheU200
Thepin#25 ofU100 is
"High"
ChecktheU100
LCDdisplayisO.KNo
No
Yes
Yes
SoundisO.KNo

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SGH-X105 FlowChartofTroubleshooting
4-3
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3.SimPart
IsthereanySignals
pin#52,#53,#54 ofU100?
"InsertSIM"isdisplayed ontheLCD
ChecktheU301
ChecktheSIMCard
END
No
Yes
Yes
Yes
NoChecktheU100
IsthereanySignals
pin#1,#2,#3,#4ofCN100?

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SGH-X105 FlowChartofTroubleshooting
4-4
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VBAT
1UF C131
C118
1UF
1.2K,1% R114
Q100
1
3 2
R112
0
33PF C101
33PF C134
33PF 33PF C133
33PF C104
C152
VBAT
VCC_1.8A VCCD
330K R113
16V
C111
1UF
C132 10UF
C106 100NF
C147 33PF
C146 33PF
ZD111
C136 33PF33PF
C135
VBA T
33PF C103
100NF
C123
VCCD
33PF C144
15uH L100
33PF C151
33PF C150C14 9
33PF33PF
C148
_SHDN
4
C139 33PF
U105
3
FB
GND 2
1
SW
5VIN
VRF
33PF C145
15 R135
15 R133
1UF C112
M1
NEG
2
POS
1
1UF C110
100N F
C113
C130 100NF
C108
1UF
VSI M
48
9
VLDO_211
39
VLDO_3 VLDO_437 VLDO_533
42
VLDO_6
40
VLDO_7
VREF 30
VRTC 12
VDD6741
1VEXT
VIB_DRV
4
36
VL4S_A VL4S_B 35
32
VL5S_A VL5S_B 31
VLDO_1
SIM_RST
53 UP_CLK
UP_IO
52
UP_RST
54
VACC
3VBAT 2
10
VDD12 VDD3438
VDD5 34
RING_DRV
RING_PWM
55
13 RTC_ALMN
SCLK
17
SDI
15
SDO
16
SIM_CLK
50 51
SIM_IO
49
INTRQ
7
LED1_DRV
LED2_DRV
8
PSW1_BUF
20 21 PWR_KEEP
PWR_SW1 N
46 47 PWR_SW2
RESETN19
5
63
GND
GND
64
GND
65
66
GND
60 GNDD
GNDD1
628
GND Q
14
EN_5A EN_5B
27
GND
57
GND
67
68
GND
58 GND
GND
59
61
GND
GND
62
ADC_TRIG BTEMP
43
29
CREF
18 CSN 22 EN_3
EN_4[0]
23 24 EN_4[1]
EN_5
25 26
U100
ADC_AUX1
44 45 ADC_AUX2
56
C107 100NF
C138 33PF33PF
C137
2.2UF C105
C116 100PF
C102
100N F
R115
0
G
910
G
11
22
33
4
4 55
6
6
G
78
G
CN100
VOSCVPAC VCCA
RDB
11
8RESETB
RS
9
VCC
29 30 VCC 10 WRD
2
DUMMY 31 DUMMY DUMMY 32 DUMMY 5
6
DUMMY
GND
28
3LED+
LED-
4
D3 15
16
D4 D5 17
18
D6 D7 19
20
D8 D9 21
DUMMY 1
D1 13
22
D10 D11 23
24
D12 D13 25
26
D14 D15 27
14
D2
U104
7CS1B
12
D0
2.2U F C114
1UF C109
VRTC
C117
1UF
R134 15K
1UF C115
VCCB
ZD114
C143 33PF
C142 33PF33PF
C141
33PF C140
BLIGHT_P
BLIGHT_N
LCD_CSL
A(2)L
CP_WENL
CP_OENL
UP_CS
RST
BLIGHT_N BLIGHT_P
VREF
SIMDATA
SIMRST
SIMCLK
PWR_ON
JIG_O N
RTCALARM
EN_VRF
EN_VPAC
XOENA
UP_SDI
UP_SCLK
LED_EN
KEY_ROW(0)
KEY_COL(2)
TA_VEXT
PWR_KEEP
BACKLIGHT
RST

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SGH-X105 FlowChartofTroubleshooting
4-5
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4.ChargingPart
Thepin#17,#18 of
CN201 isTA_VEXT=
5V?
Abnormalcharging operation
Thepin#3ofU101 is
"low"?
ReplaceTAorCheckCN201
ChecktheU101
ChecktheQ101
END
No
Yes
Yes
Yes
No
No
Thepin#3ofQ101 is
"low"?
NoSolderagainorchangeR130
Yes
TheICHRG=1V(during
charging)and=180mV(full
charging)?

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SGH-X105 FlowChartofTroubleshooting
4-6
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U102
2
5
6
3
1
4
4
Q101
3
1
2
5
6
U101
6
DRIVE
2GND
ISENSE
1
4
PROGVCC
3
VSENSE5
VBAT
47K,1%
R131
10UF
C120
10V
1
3
2
Q102
10K,1%
R129 10V
10UF
C119
10K,1%
R130
3K
R132
CHG_DET
TA_VEXT
CHG_ON
TA_VEXT
ICHRG

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SGH-X105 FlowChartofTroubleshooting
4-7
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5.MicrophonePart
Istheassembled status
ofmicrophoneO.K?
Microphone doesnotwork
C247 =2.5V
Reassemblethemicrophone
Solderthemicrophoneagainor
ReplaceC225,R220,C247,R219 R214
END
No
Yes
Yes
Yes
Yes
No
Ismicrophoneok?No
CheckU200
Checkthereferencevoltageonmicpath

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SGH-X105 FlowChartofTroubleshooting
4-8
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EAR_MIC_P
EAR_SPK_P
JACK_IN
NC R226
6.3V C250 10UF
R224
0
R236 0
C261 39PF
0R237
C251 56PF
R241 200K 10PF
C257
C228
VCCA
150PF
R213
R219 2.2K
10K
ZD411
C245
680
R220 6.3V
10UF
NC C243
C248 56PF
39PF C235
10PF C229
C246 10PF
R230 10K
0 R217
NC C249
MAIN_MIC
ICEBERG-FPCB
C255 27PF15PF
C254
1K R223
180PF C260
VCCA
R240 82K,1%
C225 1UF C226
33PF
ZD404
NC C256
VCCD
C252
1UF
C258 10PF
330K
ZD410
6.8PF
R242
C259
0
R222
R225
2.2K
R214 270K
3 2
ZD409
Q400
1
33UF
C247
39PF C253
3
1
100K R234
CN401
2 6
5 4
JACK_IN
AUXIN
AUXOUT
MICOUT
MICIN
EAR_SWITCH
AOUTBP AOUTBN

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SGH-X105 FlowChartofTroubleshooting
4-9
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6.Speaker Part
Receiver
Probe powerofC262
O.K?
Can notvoicefromreceiver
Cheakpowersupply
forU200
VCCD,VCCA
O.K?CheckU100
YES
No
Yes
No
ReceiverU200
O.K?
ReplaceReceiver
ReceiverU301
Yes
END
No
RECN
RECEIVER
ZD207 ZD206
RECP
11 2
2
10
R251
10
R249
0
R250
AOUTAN
AOUTAP

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SGH-X105 FlowChartofTroubleshooting
4-10
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7.Speaker Part
Loud speaker
ChecksignalsofCN205
O.K
NoMelodyfromLoudSpeaker
CheckPowerofU201
PIN#15,32,6,7
O.K?
Checkdatalines
ofU200
O.K
END
Yes
ReplaceSpeaker
YES
No
CheckU100
No
No
CheckLCDandMemory