SGH-X120
GSM TELEPHONE
1.
Specification
2.
Flow Chart of Troubleshooting
3.
Exploded Views and Parts Lis
4.
Electrical Parts List
5.
Block Diagram
6.
PCB Diagrams
GSM TELEPHONE
CONTENTS
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1. SGH-X120 Specification
1-1
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1. GSM General Specification
GSM900
Phase 1
EGSM 900
Phase 2
DCS1800
Phase 1
Freq. Band[MHz]
Uplink/Downlink
890~915
935~960
880~915
925~960
1710~1785
1805~1880
ARFCN range
1~124
0~124 &
975~1023
512~885
Tx/Rx spacing
45MHz
45MHz
95MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot
Period/Frame Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation
0.3GMSK
0.3GMSK
0.3GMSK
MS Power
33dBm~13dBm
33dBm~5dBm
30dBm~0dBm
Power Class
5pcl ~ 19pcl
5pcl ~ 19pcl
0pcl ~ 15pcl
Sensitivity
-102dBm
-102dBm
-100dBm
TDMA Mux
8
8
8
Cell Radius
35Km
35Km
2Km
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SGH-X120 Specification
1-2
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2. GSM TX power class
TX Power
control level
DCS1800
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
TX Power
control level
GSM900
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
2. SGH-X120 Flow Chart of Troubleshooting
2-1
1. Power ON
'Power ON' Does not work
Check the current consumption
Current consumption
≥
100mA ?
Check the V bat. voltage
Down load again
Check the pin of U300
Pin #9=1.8V?
Check the Initial operation
END
pin #39 and #33 = 2.8V
Charge the Battery
Check the clock generation
circuit (OSC100, U105 pin#4)
Check the clock signal
at pin #3 of OSC100
Freq.=13MHz,Vrms 300mV
Check U300 and C312
Check U300 and C313
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
Voltage ≥ 3.3V ?
pin #11 ≥ 2.8V ?
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-2
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2. System Initial
The pin #9 of U300 = 1.8V
and pin #11 of U300=2.8V?
Initial Failure
Is the pin #19 of U300
" Low --> High" ?
There is 32.768KHz wave
form at the C225, C226 ?
Is the pin #25 of U300
is High ?
The voltage is "High"
at the C306,C308,C309 ?
LCD Display OK ?
Sound operation OK ?
END
Check the U201
Check the U200
Check the U300
Check the LCD part
Check the Audio part
YES
NO
NO
NO
NO
YES
YES
YES
YES
YES
NO
NO
NO
YES
Check the U300
(If it has some problem,
it has to be replaced.)
Check the U300
(If it has some problem,
it has to be replaced.)
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-3
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3. SIM Part
Is there any signal
pin #52,53,54 of U300 ?
Check the U201
"Insert SIM" is displayed on the LCD
END
Check the SIM Card
YES
NO
NO
YES
Is there any signal
pin #1,2,3,6 of CN300 ?
Check the U300
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-4
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4. Charging Part
The pin #17,18 of CN301
(VEXT) is 5V ?
Replace TA or check CN301
Abnormal charging operation
END
Check the U302
YES
NO
NO
The pin#6 OF U302 LOW?
YES
The pin#2 of U302 is Low?
YES
Check the U302
NO
The pin#5 of U301 is
3.2~4.2V?
Check the U301
NO
The ICHRG =1V(during charging)
& 180mV(full charging)?
YES
YES
Solder again or change
R322
NO
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-5
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5. Microphone Part
Micro-phone does not work
Is the assembled status of
Microphone O.K?
YES
Reassemble the microphone
NO
Check the DC bias voltage on
Mic path.
The voltage of C476 is
2.2V±10%?
NO
Solder the microphone again
or Replace
C434,C476,R416,R415,R440
Is microphone OK?
NO
Check U300
END
YES
YES
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-6
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6. Speaker Part
Is the terminal of speaker
is O.K?
NO
Replace the speaker
There is no sound from speaker
YES
The type of sound from
the speaker is Melody?
YES
NO
Check
U201,
U401
NO
NO
Pin #4 of U401
is Low?
Pin #4 of U401
is High?
Check U402
NO
NO
YES
YES
YES
YES
END
Are there any signal
at the pin #5,7 of U401?
Are there any signal
at the pin #3,9 of U401?
Check U200
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-7
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7. EGSM Receiver
Continuous RX ON
RF Input : 62 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
U100 Check
Pin #6 ≥ -65dBm ?
U100 Check
Pin #11 ≥ -65dBm ?
U103 Check
Pin#20,21 ≥ -65dBm ?
Check soldered status of
C102
CON101
Resolder or Change
U100 Resolder or Change
U103 Check
Pin#9,32=Clean 2.8V?
U103 Check
Pin#28,1,2,3=100mV?
U300, C306, C308
Check or resolder
Check U200
NO
NO
YES
YES
YES
YES
NO
YES
U103 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
OSC100 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
OSC100 Check
Pin #4 = 2.8V ?
U103
Change or resolder
NO
NO
NO
C129, R114
resolder
OSC100
Change or resolder
YES
YES
YES
NO
Check soldered status of
C117, 118, L103, U104
U104 Check
Pin #1 ≥ -65dBm ?
Check soldered status of
C114 &
U100 Resolder or Change
NO
YES
NO
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-8
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8. EGSM Transmitter
Continuous TX ON condition
TX Power Code : 500 code Applied
CH : 62
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF. Level : 10dBm
ATT. : 20dB
C103
= 3.7V?
Change U101
NO
YES
U100 Pin#6
About 2~3 dBm?
U100
Pin#10 = High?
U200, Q202
Check & Change
NO
U102, CON101
Check & Change
YES
U100
Check & Change
YES
Check the
Battery Block
Level of
U101 Pin #6 is
1.2V?
Check
& Change R107
OK ?
U200
Check & Change
YES
YES
NO
NO
NO
NO
U101 pin#7
About -5 dBm?
U101 pin#3
High ?
Check U200
YES
NO
YES
U103 Check
Pin#9,32 ≥ 2.8V ?
U103 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
OSC100 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
OSC100 Check
Pin #4 = 2.8V ?
NO
YES
NO
NO
NO
R114, C129
resolder
OSC100
Change or resolder
YES
YES
YES
NO
U300, C306, C308
Check or resolder
U401 Pin
#4,5,6,7 = 1.7V?
YES
Change U101
Check U200
NO
YES
Level of
U100 Pin#7 is
4~5dBm ?
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-9
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9. DCS Receiver
Continuous RX ON
RF Input : 660 CH
AMP : -50dBm
NORMAL CONDITION
Catch the channel ?
YES
NO
U100 Check
Pin #6 ≥ -65dBm ?
U100 Check
Pin #3 ≥ -65dBm ?
U103 Check
Pin#18,19 ≥ -65dBm ?
Check soldered status of
C102
CON101
Resolder or Change
U100 Resolder or Change
U103 Check
Pin#9,32=Clean 2.8V?
U103 Check
Pin#28,1,2,3=100mV?
U300, C306, C308
Check or resolder
Check U200
NO
NO
YES
YES
YES
YES
NO
YES
U103 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
OSC100 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
OSC100 Check
Pin #4 = 2.8V ?
U103
Change or resolder
NO
NO
NO
R129, 114
resolder
OSC100
Change or resolder
YES
YES
YES
NO
Check soldered status of
C107, 115, ,L102, U102
U102 Check
Pin #1 ≥ -65dBm ?
Check soldered status of
C114, 116
NO
YES
NO
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-10
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10. DCS Transmitter
Continuous TX ON condition
TX Power Code : 350 code Applied
CH : 660
RBW : 100KHz
VBW : 100KHz
SPAN : 10MHz
REF. Level : 10dBm
ATT. : 20dB
C104
= 3.7V?
Change U101
NO
YES
U100 Pin#6
About 2~3 dBm?
U100
Pin#4 = High?
U200,Q203
Check & Change
NO
C102, CON101
Check & Change
Level of
U100 Pin#5 is
4~5dBm ?
YES
U100, L100, C106, C114
Check & Change
YES
Check the
Battery Block
Level of
U101 Pin #6 is
1.2V?
Check
& Change R107
OK ?
U200
Check & Change
YES
YES
NO
NO
NO
NO
U101 pin#1
About -5 dBm?
U101 pin#3
High ?
Check U200
YES
NO
YES
U103 Check
Pin#9,32 ≥ 2.8V ?
U103 Check
Pin #8 : 13MHz ?
Vpp : 860mV?
OSC100 Check
Pin #8 : 13MHz ?
Vpp : 950mV?
OSC100 Check
Pin #4 = 2.8V ?
NO
YES
NO
NO
NO
R129, 114
resolder
OSC100
Change or resolder
YES
YES
YES
NO
U300, C306, 308
Check or resolder
U103 Pin
#4,5,6,7 = 1.7V?
YES
Change U101
Check U200
NO
YES
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SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-11
This Document can not be used without Samsung's authorization
JA C K _IN
EA R _SPK _N
EA R _M IC _N
A U D IO
EA R _SPK _P
EA R _M IC _P
C 418
V C C A
R418
R402
13K ,1%
R424
C 452
C 425
C
4
6
3
C 430
D 400
5
6
C 451
ZD 405
1
2
3
4
R 433
R 416
C
4
6
9
C
4
6
7
C 403
R403
C 404
62K ,1%
R 429
1
R434
Q 401
2
3
Z
D
4
0
7
V C C D
C 416
C 409
C 453
SPK400
Z
D
4
0
9
C 455
C 439
V B A T
C 420
C
4
6
0
C 408
Z
D
4
0
2
C
4
7
0
C 442
C
4
7
1
R 407
V C C D
R 432
V C C A
C 476
R425
C
4
7
3
C
4
7
2
R 422
C 421
C
4
6
2
G N D
1
SW
VIN
5
_SH D N
4
R 421
U 400
FB 3
2
33U F
L403
C 441
C 445
L400
V C C D
C 401
R 426
C 447
R401
C
4
6
4
V C C A
C 443
M IC _P
C 440
C
4
5
9
R 431
V B AT
C
4
6
8
C 429
C 444
R 428
C 402
R404
N C 1
5
7
N C 2
N O 1
2
N O 2
10
1
V +
Z
D
4
0
1
U 401
3
C O M 1
9
C O M 2
6
G N D
IN 1
4
IN 2
8
C 432
C
4
5
8
8
V D D
V IC O N
4
W R B
11
PR EB
PR EG
32
33
PR ER
12
R D B
R STB
10
5
V B A TT
2
V C C 1
V C C 4
35
D 7
D 8
23
24
D 9
G N D 4
34
G N D 2
3
G N D 3
9
36
N C 1
1
N C 2
31
D 13
D 14
29
30
D 15
D 2
17
18
D 3
D 4
19
D 5
20
D 6
21
22
C 1+
C 1-
7
C SB
13
D 0
15
16
D 1
D 10
25
D 11
26
D 12
27
28
C N 400
A 0
14
6
R427
C 405
R435
C
4
6
6
C 417
V B A T
C 406
C 448
R 419
100K
/R
S
T
4
28
/W R
V C C D
Z
D
4
0
6
15
SPVD D
SPVSS
16
7
V
D
D
9
V
R
E
F
V
S
S
8
/C S
29
3
/I
R
Q
/R D
31
11
H PO U T-R
IO VD D
32
L
E
D
2
19
M
T
R
5
N
C
P
L
L
C
6
17
S
P
O
U
T
1
S
P
O
U
T
2
18
EQ 1
12
13
EQ 2
EQ 3
14
33
G
G
34
35
G
G
36
H PO U T-L/M O N O
10
D 0
27
26
D 1
25
D
2
D
3
24
23
D
4
D
5
22
21
D
6
D
7
20
U 402
$V
30
A 0
1
C
L
K
I
R 408
M IC _M
V C C D
R437
R 405
C 424
C 456
R 415
C 435
1N F
L401
3
4
C 431
F400
1
2
C 457
R 414
C 449
Z
D
4
0
8
1
2
3
4
5
6
C 434
C N 401
R 440
C 415
C 477
C 450
Z
D
4
0
4
R400
Z
D
4
0
0
C
4
1
0
R 417
1.2K
C
4
0
7
C
4
6
1
C 419
C 437
R 423
C 433
Z
D
4
0
3
8PF
C 438
NC
1
C 436
Q 400
2
3
L404
R 420
150K ,1%
R 406
C
4
6
5
R 411
V C C A
R 430
L402
C 446
C 454
Y M U _IRQ
M EM _R ST
LC D _SEL
C P_W EN
C LK 13M _Y M U
D
(2
)
D
(3
)
D
(4
)
D
(5
)
D
(6
)
D
(7
)
Y M U _LED
V
IB
_
E
N
M
S
P
K
-
M
S
P
K
+
D (13)
D (14)
D (15)
A (3)
A (0)
M SPK -
M SPK +
V _B O O ST
D (1)
D (2)
D (3)
D (4)
D (5)
D (6)
D (7)
D (8)
D (9)
D (10)
D (11)
D (12)
D
(0
)
D
(1
)
D
(2
)
D
(3
)
D
(6
)
D
(7
)
D
(5
)
D
(4
)
D
(1
0
)
D
(1
1
)
D
(9
)
D
(8
)
D
(1
4
)
D
(1
5
)
D
(1
3
)
D
(1
2
)
M EM _R ST
D (0)
LC D _B A C K LIG H T_E N
LC D _B A C K LIG H T_C O N TR O L
V_B O O S T
SPK 1N
SPK 1P
A O U TA N
A O U TA P
SPK 1N
SPK 1P
A U D IO _O U T_SEL
EA R _SW ITC H
A O U TB P
A O U TB N
D (1)
D (0)
C P_W EN
C P_O EN
Y M U _EN
A U XO U T
A U XIN
M IC O U T
M IC IN
JA C K _IN
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-12
This Document can not be used without Samsung's authorization
D EB U G _R TS
I/F C O N N EC TO R
B P_C F
G N D
VC C D
VO LU M E
G N D
D EB U G _TXD
VEXT
SD S_R XD
D EB U G _D SR
G N D
D EB U G _C TS
SD S_TXD
VEXT
G N D
VTEST
JTA G C O N
D LC _D ETEC T
D EB U G _R I
D EB U G _D C D
JIG _O N
PO W ER
K EY
D EB U G _R XD
IR D A
G N D
B P_VF
VB A T T
12
D EB U G _D TR
C 315
K EYPA D
PW R
VC C D
G N D 2
1
IN +
IN -
2
0
R
3
2
1
K EYPA D
12
C N 302
3
G N D 1
4
R 312
1K
6
R 311
1K
LED 307
R 339
C 320
LED 312
R 348
R 316
R 301
12
R 349
C P_TM S
8
K EYPA D
ZD 303
1
2
3
4
5
6
Z
D
3
1
6
R 300
1K
R 304
4
PR O G
VC C
3
VSEN SE
5
U 301
6
D R IVE
2 G N D
ISEN SE
1
C 330
1U F
C 329
1K
C 318
VO SC
R 313
R 303
VB A T
R 327
0
3
1
2
D SP_TD I
C 306
ZD 306
R 325
Q 302
1
3
2
0
12
12
VC C D
SEN D
K EYPA D
SW 2
34
5
K EYPA D
3
12
K EYPA D
*
12
D SP_TM S
R 344
C 305
Z
D
3
1
3
Z
D
3
1
8
K EYPA D
SH A R P
12
R 323
C 303
R 309
2
R 347
R 315
1K
K EYPA D
LEFT
1
Z
D
3
1
4
1K
R 306
VB A T
R ST
C 327
C 328
R 305
1K
C 316
LED 302
LED 309
LED 301
LED 310
C P_TD O
Z
D
3
1
2
12
Z
D
3
1
5
V_AU X
K EYPA D
M EN U
12
STO
K EYPA D
R 307
1K
12
R 337
K EYPA D
U P
R 341
D SP_TC K
K EYPA D
7
12
Z
D
3
2
0
C 321
R 334
C 307
1K
R 314
SW 1
34
5
12
V_M O TO R
I
K EYPA D
12
R 354
1K
R 338
R 310
L
E
D
3
0
5
R 342
VC C _1.8A
VB A T
300
L
E
D
3
0
4
C 323
C 324
C P_TD I
Z
D
3
0
8
C 301
C 308
G
78
G G
91 0
G
R 346
C N 300
1
1
2
2
3
3
4
4
5
5
6
6
0
D D -D O M -4PIE-2
12
VB A T
VC C D
C 322
R 302
C 317
VPA C
C 300
C 325
VC C D
0
R 329
VC C D
VR TC
R 350
0
R 357
N C
1
2
3
4
5
6
R 356
ZD 301
4
RXD
SD
5
TXD
3
6
V C C
C 309
LED300
7
G ND
LEDA
1
2
LEDC
Z
D
3
1
1
1K
R 317
N C
VB A T
C 312
R 355
K EYPA D
5
12
VB A T
Z
D
3
2
1
LED 303
R 340
30
R 320
VR F
LED 311
R 335
R 336
VLD O _3
VLD O _4
37
VLD O _5
33
42
VLD O _6
40
VLD O _7
V
R
E
F
30
VR TC
12
V
S
IM
48
VEXT
V
IB
_
D
R
V
4
36
VL4S_A
VL4S_B
35
32
VL5S_A
VL5S_B
31
VLD O _1
9
VLD O _2
11
39
U P_R ST
54
VA C C
3
VB A T
2
10
VD D 12
VD D 34 38
VD D 5
34
VD D 67 41
1
R TC _A LM N
SC L K
17
SD I
15
SD O
16
S
IM
_
C
L
K
50
51
S
IM
_
IO
49
S
IM
_
R
S
T
53 UP_CLK
U P_IO
52
PSW 1_B U F
20
21 PW R_KEEP
PW R _SW 1N
46
47
PW R _SW 2
R ESET N
19
5
R
IN
G
_
D
R
V
R IN G _PW M
55
13
G
N
D
6
5
6
6
G
N
D
60
G N D D
G
N
D
D
1
6
28
G
N
D
Q
14
IN TR Q
7
L
E
D
1
_
D
R
V
L
E
D
2
_
D
R
V
8
G
N
D
6
7
6
8
G
N
D
58
G N D
G N D
59
6
1
G
N
D
G
N
D
6
2
6
3
G
N
D
G
N
D
6
4
C
R
E
F
18
C SN
22
EN _3
EN _4[0]
23
24
EN _4[1]
EN _5
25
26
EN _5A
EN _5B
27
G N D
57
U 300
A D C _A U X1
44
45 ADC_AUX2
56 ADC_TRIG
B TEM P
43
29
Z
D
3
0
7
K EYPA D
R IG H T
12
4
K EYPA D
12
R 345
K EYPA D
1
12
2
K EYPA D
12
C 326
VC C B
M 1
N
E
G
2
P
O
S
1
R 318
C 314
Z
D
3
0
9
Z
D
3
1
7
R 319
V_AU X
ZD 322
Q 300
1
3
2
C 302
0
R 326
3
1
2
5
6
4
Q 301
C 313
R 322
C 310
C P_TC K
VC C A
7
7
8
8
9
9
N C
23
N C
24
D SP_TD O
2
2
20
20
21
21
22
22
3
3
4
4
5
5
6
6
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
1
4
C N 301
1
1
10
10
11
11
Q 303
2
5
6
3
R 343
R 333
300
5
N /C
N /C 8
7
N /C
1
VIN V
O U T1 10
9
VO U T2
0
3
EN 2
G N D 6
11
G
N
D
G
N
D
12 13
G
N
D
G
N
D
14 15
G
N
D
G
N
D
16
U 302
C B YP
4
EN 1
2
C 304
ZD 302
1
2
3
4
5
6
ZD 319
1
2
3
4
5
6
VR T C
Z
D
3
1
0
VC C D
LED 308
LED 306
C 311
100N F
VC C B
12
C 319
1K
D O W N
K EYPA D
2
C LEA R
D D -D O M -4PIE-2
12
R 308
R 324
K EYPA D
9
1
TA _VEXT
D A ID I
B P_VF
TA _VEXT
D A IC K
D A IR N
D A ID O
D EB U G _R XD
D EB U G _TXD
IR D A _EN 1
D EB U G _R T S
JIG _O N
B P_C F
D EB U G _D C D
D EB U G _D SR
D EB U G _R I
SD S_R XD
SD S_TXD
K EY_B A C K LIG H T_EN
V_A U X
V_M O TO R
IR D A _E N
IR D A _R X
IR D A _TX
D EB U G _C T S
D EB U G _D TR
D LC _D ETEC T
VIB _EN
C P_TD O
D SP_TC K
D SP_TD O
R ST
C P_TD I
D SP_TD I
C P_TM S
D SP_TM S
C P_TC K
C H G _O N
K EY_C O L(0:4)
K EY_C O L(4)
K EY_C O L(2)
K EY_C O L(1)
K EY_C O L(0)
K EY_R O W (0:4 )
K EY_R O W (4 )
K EY_R O W (3 )
K EY_R O W (2 )
K EY_R O W (1 )
K EY_R O W (0 )
PW R _O N
K EY_C O L(3)
U P_SC L K
U P_C S
IC H R G
TA _VEXT
VR EF
SIM D A T A
SIM R ST
SIM C LK
C H G _D ET
PW R _O N
JIG _O N
R TC A LA R M
EN _VR F
EN _VPA C
XO EN A
U P_SD I
K EY_R O W (0)
K EY_C O L(2)
TA _VEXT
PW R _K EEP
R ST
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-13
This Document can not be used without Samsung's authorization
X-TA L(13M H z)
TR A N SM ITTER & R EC EIVE R
C 114
C 111
L105
4
VB ATT
10
V
C
C
V
C
C
2
81 2
V
C
C
2
6
VR AM P
VR EG
5
U 101
2
B AN D
D C SIN
1
13
G N D
G SM 850/900IN
7
G SM 850/900O U T
9
11
PC SO U T
3
TXEN
10K
R 102
R 113
10N F
C 128
3
O U T
O U T
4
VB AT
C 100
U 102
2
G
5
G
I
N
1
R 106
C 107
3PF
R 100
C 102
C 118
C 120
C 131
C 104
10N F
C 129
R 110
VRF
VRF
10K
C 110
N C
C 116
2
G G
5
I
N
1
3
O U T
O U T
4
C 127
100PF
U 104
C 122
R 101
R 105
1
1
2
2
C 119
N C
C N 100
9
G
G
12
13
G
G
14
11
VC1
2
VC2
AN T
8
D C S_RX
1
D C S_TX
3
10
EG SM _R X
5
EG SM _TX
G
4
6
G
7
G
R 107
U 100
C 101
100K
G
N
D
2
O
U
T
3
4
V
C
C
1
V
T
L104
VO SC
O SC 100
C 124
1N F
C 125
10
1N F
VO SC
R 109
C 130
10N F
10PF
C 123
L100
C 106
R 103
L102
C 115
L103
R 104
R 108
C 109
C 108
C 117
C O N 101
3
G 1
4
G 2
IN
1
O UT
2
1.5K
R 111
C 103
R 112
560
4
C 121
U 105
2 A
G N D
3
1
N C
5
VC C
Y
C 126
100P F
V
D
D
X
E
N
26
X
IN
8
X
O
U
T
27
10
_
P
D
N
_
S
E
N
12
VPAC
13
S
D
I
14
S
D
O
11
TXI
N
5
TXI
P
4
TXQN
7
6
TXQ P
9
V
D
D
32
R FI
P N
17
R FI
P P
16
R
F
O
D
22
R
F
O
G
23
R XI
N
3
2
R XI
P
1
R XQ N
28
R
X
Q
P
S
C
L
K
G
N
D
33
G
N
D
34
35
G N D
G N D
36
R FI
D N
19
R FI
D P
18
R FI
G N
21
20
R FI
G P
U 103
D
IA
G
1
24
D
IA
G
2
25
G N D
15
G
N
D
2930
G
N
D
31
G
N
D
C 113
1NF
R 114
100
C 112
C 105
D C S_TX_EN
G SM _TX_EN
C LK 13M _M C
C LK 13M _TR
AFC
C LK 13M _R F
C LK 13M _YM U
G SM _LN A_I
N _P
G SM _LN A_I
N _N
D C S_LN A_I
N _N
D C S_LN A_I
N _P
TXQ P
G SM _LN A_I
N _N
G SM _LN A_I
N _P
D C S_LN A_I
N _N
G SM _PAM _I
N
D C S_PAM _I
N
SER C LK
SER D AT
SI
_E N
SER LE
R XI
P
R XI
N
R XQ P
R XQ N
C LK 13M _R F
D C S_LN A_I
N _P
TXI
N
TXI
P
TXQ N
TXPO W ER
TX_B AN D _SEL
G SM _PAM _I
N
D C S_PAM _I
N
TX_EN
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 Flow Chart of Troubleshooting and Circuit Diagrams
2-14
This Document can not be used without Samsung's authorization
P
A
2
8
/I
O
M
0
C
P
_
K
B
[6
]/
T
R
_
P
R
O
T
0
P
A
1
9
/C
P
_
M
O
F
L
A
S
H
_
R
E
S
E
T
P
A
3
3
/T
_
R
E
Q
A
C SP1093
P
A
2
5
/O
M
0
P
A
1
4
/R
X
1
P
A
3
0
/I
M
0
B O A R D _H O LE
P
A
1
8
/T
_
A
C
K
C
P
_
K
B
[0
]/
T
R
_
C
S
_
IR
A
M
C K O /IA C K /ER A M H I
P
A
3
1
/I
M
1
IO B IT[1]/V EC [4]/P LLTO A
C
P
_
K
B
[3
]/
T
R
_
C
S
_
IP
C
P
P
A
2
2
/S
M
1
_
D
A
TA
P
A
2
9
/I
O
M
1
P
A
3
4
/T
_
R
E
Q
B
C
P
_
K
B
[9
]/
T
R
_
G
N
T
_
D
M
A
S
IM
_
D
A
T
A
/S
M
0
_
D
A
TA
IO B IT[2]/V EC [3]/ER O M H I
P
N
1
7
/D
R
Q
C
P
_
K
B
[1
]/
T
R
_
C
S
_
IR
O
M
C
P
_
K
B
[4
]/
T
R
_
S
IZ
E0
C
P
_
K
B
[2
]/
T
R
_
C
S
_
P
E
R
F
C
P
_
K
B
[8
]/
T
R
_
N
E
X
E
C
P
A
2
0
/C
P
_
M
I
C
P
_
K
B
[7
]/
T
R
_
S
IZ
E1
P
A
2
7
/S
M
1
_
C
L
K
P
A
1
3
/T
X1
C
P
_
K
B
[5
]/
T
R
_
C
LK
S
IM
_
C
L
K
/S
M
0
_
C
L
K
TR ID EN T
JTA G
P
A
2
6
/O
M
1
G N D _ 1
V C C D
27
V _B A TT
23
V _B U S
8
11
S P K +
S P K -
12
TC K
21
TD I
19
18
TD O
20
TM S
TR S T
17
TX D
D -
10
22
F-W E
7
G N D
24
G N D
H P /P O W ER
25
13
M IC +
M O T +
14
26
R X D
29
3
3
30
30
31 31
4
4
5
5
6
6
32
A N T
9
D +
$P
1
1
15 15
16
16
2
2
28
28
29
C N 402
2.4
R 215
C 212
C 204
C 208
Q 200
2
5
6
3
1
4
R 218
C 224
100K
0
N C
R 209
R 212
V C C D
R 208
V C C D
F_W E_1
N C
C 210
C 218
R 213
2
5
6
3
1
4
2.4
V C C D
Q 203
R 214
C 220
R 200
V C C D
V C C D
N C
R 211
C 219
C 21 1
V C C D
C 209
C 222
6
3
1
4
N C
R 210
Q 202
2
5
C 223
V SS
G 10
H 5
V SS
B 11
V X V C M
N 7
X O EN A
X O EN A Q
N 5
N 12
X TA LA
N 11
X TA LB
H 10
V SS
K 8
K 10
V SS
K 6
V SS
V SS
E5
E7
V SS
E8
V SS
V SS
E10
G 5
V SS
A 1
V D D 3
V D D A
E13
V D D B
K 13
F14
V D D C
V D D D
P 13
D 11
V R EG
V SS
K 5
V SS
TX IN
J10
TX IP
TXP
J14
TX Q N
J13
H 13
TX Q P
U C
B 3
A 2
U C
F1
V D D 1
V D D 2
P 6
S ER C K
S ER D A
M 8
S ER LE1
P 9
M 7
S ER LE2
N 9
TC K
N 10
TD I
N 8
TD O
P 10
TM S
H 12
A 10
R ES ET N
R FO V L
N 6
R W N
K 4
M 13
R X IN
R X IP
L11
R X Q N
P 14
N 14
R X Q P
K 9
B 7
D 5
O C TL5
O C TL6
A 6
E6
O C TL7
O C TL8
C 7
C 8
O C TL9
R A R EF1
K 14
L13
R A R EF2
R EFC
C 13
N C
2
O C TL0
B 4
A 5
O C TL1
O C TL10
A 9
E9
O C TL11
O C TL2
B 5
B 6
O C TL3
O C TL4
G N D B
K 11
F10
G N D C
L10
G N D D
K 2
IO
K 7
M C
A 13
M IC IN
B 12
M IC O U T
1
N C
D B 4
H 3
G 3
D B 5
D B 6
F5
G 2
D B 7
D B 8
F2
E2
D B 9
D IN TR
L4
E11
G N D A
D B 10
D 2
D 4
D B 11
D B 12
E1
E4
D B 13
D B 14
C 2
B 1
D B 15
D B 2
J5
J1
D B 3
A U X O U T
B 14
C IN TR
L5
B 10
D A IC K
D A ID I
B 9
D A ID O
B 8
D A IR N
D 10
D B 0
J2
H 2
D B 1
A B 6
A B 7
L2
K 1
A B 8
A FC
G 12
A O U TA N
G 13
A O U TA P
F13
A O U TB N
E14
D 13
A O U TB P
A U X IN
A 14
P 5
A B 0
A B 1
N 4
N 3
A B 2
A B 3
P 2
P 1
A B 4
A B 5
N 1
M 2
C 216
10N F
U 200
100N F
C 217
R 225
N C
10N F
C 221
V C C _1.8A
V C C D
C 232
1
Q 201
2
3
C 214
V C C D
C 213
V C C _1.8A
C 202
V C C A
R 228
H 4
C 203
V R T C
V C C _1.8A
C 234
C 233
V C C B
C 229
V C C _1.8A
V C C _1.8A
C 205
L2
L5
V S S
V S S
L6
L7
V S S
V S S
L8
V S S
L1
G 7
W A IT
F5
W E#
W P #
E4
B 6
K 6
V C C 2
J8
V C C Q
V C C Q
K 7
L3
V C C Q
D 4
V P P /V P EN
V S S
B 4
C 4
V S S
V S S
R F U
K 3
R F U
F4
R S T #
J1
S -C S 1
S -C S 2
C 5
S -V C C
K 4
V C C 1
B 5
L4
V C C 2
V C C 2
O E# 2
D 6
P -C S #
K 8
P -M O D E
P -V C C
K 5
C 2
R -LB #
H 1
R -O E#
F3
R -U B #
D 5
R -W E#
K 2
A 8
D U
M 1
M 2
D U
D U
M 7
M 8
D U
1
N C
N C
2
O E# 1
J2
H 8
G 5
J6
D 6
D 7
H 7
G 2
D 8
D 9
J3
A 1
D U
D U
A 2
A 7
D U
D U
J4
H 5
D 12
D 13
G 6
H 6
D 14
D 15
J7
G 3
D 2
D 3
H 4
J5
D 4
D 5
A 9
E5
A D V #
C E# 1
K 1
C E2
G 8
C LK
C 6
H 2
D 0
D 1
H 3
G 4
D 10
D 11
E6
A 2 1
B 7
D 1
A 3
A 4
B 1
A 5
C 1
F2
A 6
E2
A 7
A 8
F6
D 7
A 1 3
F7
A 1 4
E8
A 1 5
A 1 6
F8
D 2
A 1 7
A 1 8
B 2
B 3
A 1 9
A 2
E1
A 2 0
256M B
C 3
512M B
D 3
A 0
G 1
F1
A 1
A 1 0
E7
B 8
A 1 1
C 8
A 1 2
D 8
U 203
C 7
128M B
1G B
E3
R
2
0
7
O S C 200
4
7
0
C 226
12P F
R 216
C 230
47K
R 201
2
7
0
C 231
R 223
R
2
0
2
H 2
C 207
V C C _1.8A
R 229
C 228
C 200
R 220
C 227
100P F
V C C B
V C C D
R 217
R 222
N C
C 235
12P F
C 225
R 227
G N D
3
2
V O
V S
1
R
2
0
4
4
7
0
U 202
V B A T
V C C D
H 1
R 219
V B A T
C 215
R 226
100K
C SR O M 2EN
C SR O M EN
N
1
0
U
1
2
X TIC _M O D E
D 12
F
1
0
X
V
R
E
F
X P A 5/W A ITN
P 15
T15
X P A 6/B E1N
X P A 7/IR Q 1
M 9
T5
X P A 8/IR Q 2
X P A 9/IR Q 3
P 2
X
P
W
M
1
R
5
E8
X R TC A LA R M _ N
E
1
H
1
4
X
P
A
3
2
_
C
S
0N
N
1
7
M
1
7
X
P
A
3
5
_
A
2
2
L
1
3
N
1
5
X
P
A
3
6
_
A
2
3
_
C
S
5N
X P A 3/C S 4N
N 14
X P A 4/O EN
P 16
X
P
A
2
3
/P
W
M
2
H
5
X
P
A
2
4
/P
W
M
3
M
3
G
2
G
4
G
5
F
1
M 11
X P A 2/C S 3N
F
3
X
P
A
1
6
/R
X
0
E
4
P
1
3
L
2
M 14
X P A 1/C S 2N
L
1
K
4
X
P
A
2
1
/C
P
_
S
C
K
J
6
H
6
X O S C 32O U T
X P A 0/C S 1N
M 15
N 2
X P A 10/IR Q 4
X
P
A
1
1
/I
R
D
A
R
X
K
5
N
1
X
P
A
1
2
/I
R
D
A
T
X
G
6
G
3
X
P
A
1
5
/T
X
0
H
4
L
3
T
4
N
3
D
7
X
C
P
_
T
C
K
X
C
P
_
T
D
O
D
1
3
X
C
P
_
T
M
S
G
8
F
9
X
C
P
_
T
R
S
TN
C 13
X C P _W E N
F
4
C 6
L
4
L
5
M
4
T
1
R
2
T
3
U
3
P
3
C 5
X C P _D 4
X C P _D 5
D 6
X C P _D 6
E7
D 5
X C P _D 7
C 4
X C P _D 8
X C P _D 9
B 4
C
7
X
C
P
_
T
D
I
B 5
X C P _D 1
X C P _D 1 0
B 3
C 1
X C P _D 1 1
X C P _D 1 2
C 2
D 2
X C P _D 1 3
D 3
X C P _D 1 4
X C P _D 1 5
E3
F8
X C P _D 2
X C P _D 3
F7
A 16
X C P _A 6
X C P _A 7
A 15
X C P _A 8
B 17
C 17
X C P _A 9
A 13
X C P _C S R A M E N
X C P _C S R O M E N
A 12
X C P _D 0
A 6
K 14
X C P _A 1 8
X C P _A 1 9
L14
X C P _A 2
E14
X C P _A 2 0
L15
L16
X C P _A 2 1
D 15
X C P _A 3
B 15
X C P _A 4
X C P _A 5
C 14
F11
X C P _A 1
D 16
X C P _A 1 0
X C P _A 1 1
F14
X C P _A 1 2
G 14
G 13
X C P _A 1 3
X C P _A 1 4
G 17
J12
X C P _A 1 5
K 12
X C P _A 1 6
X C P _A 1 7
K 13
X 2R TC
B 11
X A G 0
X A G 1
A 11
X A G 2
E1 1
D 11
X A G 3
X B S W N
B 7
X C P TS TS TO P _C K O
M 12
B 13
X C P _A 0_B EO N
G
1
0
V
S
S
V
S
S
H
7
V
S
S
H
1
1
J
7
V
S
S
K
6
V
S
S
E
1
0
V
S
S
A
E
1
5
V
S
S
_
D
P
L
L
X 1R TC
A 7
D 10
L
1
0
V
S
S
V
S
S
M
7
L
8
V
S
S
J
1
1
V
S
S
V
S
S
L
9
A
3
V
S
S
F
6
V
S
S
V
S
S
G
9
N
1
6
V
D
D
E
V
D
D
E
E
1
6
E
1
7
V
D
D
E
V
D
D
_
D
P
L
L
G
1
6
V
R
T
C
D
8
V
S
S
A
2
V
S
S
K
7
V
S
S
L
6
B
1
V
D
D
E
V
D
D
E
B
1
4
V
D
D
E
M
1
U
2
V
D
D
E
V
D
D
E
P
8
U
1
5
V
D
D
E
V
D
D
E
U
1
6
G
1
V
D
D
V
D
D
R
1
R
4
V
D
D
V
D
D
T
1
3
R
1
6
V
D
D
V
D
D
R
1
7
A
5
V
D
D
V
D
D
C
1
6
V
D
D
A
C
1
1
TC K
H 13
TD I
H 12
F12
TD O
G 12
TM S
TR S T
F15
V
D
D
E
2
L
1
7
V
D
D
D B #9
N 7
N 4
IN T#0
R 12
IO 7
K 11
L12
N
C
1
2
N
C
R
S
T
B
C
1
2
R W N
U 5
D B #15
P 10
R 6
D B #2
D B #3
P 6
U 7
D B #4
T7
D B #5
D B #6
R 7
M 6
D B #7
P 7
D B #8
G 15
D B #0
P 5
U 6
D B #1
D B #10
N 8
M 8
D B #11
D B #12
U 11
T11
D B #13
R 11
D B #14
N 11
A B #3
A B #4
P 11
P 12
A B #5
A B #6
R 14
A B #7
T14
T17
A B #8
F
1
7
C
K
I
U 201
U 13
A B #0
A B #1
M 10
R 13
A B #2
C 201
R 221
R 224
43
2
1
R
2
0
3
2
7
0
LED 201
C 206
R
2
0
5
2
7
0
R
2
0
6
43
2
1
2
7
0
H 3
LED 200
C SR AM EN
A (23)
IR D A _EN 1
B P _C F
R S T
C P _TC K
C P _TM S
C P _TD I
C P _TD O
V B A T
JIG _O N
S D S _R X D
S D S _TX D
C P _W EN
D A ID O
D A ID I
D A IC K
D A IR N
TX P O W ER
R ED _LE D
G R EEN _LE D
B LU E_LED
X O EN A
B LU E_LE D
G R EEN _LE D
TX _B A N D _S EL
G S M _TX _E N
D C S _TX _EN
TX _E N
EN _V R F
EN _V P A C
S I_E N
R ED _LE D
R X IN
R X IP
R X Q N
R X Q P
TX IN
TX IP
TX Q N
TX Q P
A O U TB N
M EM _R S T
D S P _R W N
D S P _IO
D S P _A B (0:8)
D S P _D B (0:15)
D S P _A B (8)
A FC
A U X IN
C P _IN T
D S P _IN T
C LK 13M _M C
M IC IN
D S P _D B (6)
D S P _D B (7)
D S P _D B (8)
D S P _D B (9)
S ER C LK
A U X O U T
A O U TB P
S ER D A T
S ER LE
A O U TA P
A O U TA N
M IC O U T
C LK 32 K
D S P _A B (4)
D S P _A B (5)
D S P _A B (6)
D S P _A B (7)
D S P _D B (0)
D S P _D B (1)
D S P _D B (10)
D S P _D B (11)
D S P _D B (12)
D S P _D B (13)
D S P _D B (14)
D S P _D B (15)
D S P _D B (2)
D S P _D B (3)
D S P _D B (4)
D S P _D B (5)
A (23)
IC H R G
LC D _B A C K LIG H T_EN
C H G _D ET
A U D IO _O U T_S E L
YM U _LE D
EA R _S W ITC H
D S P _A B (0)
D S P _A B (1)
D S P _A B (2)
D S P _A B (3)
C P _TD I
C P _TM S
D S P _TC K
D S P _TD I
D S P _TD O
D S P _TM S
R S T
U P _S C LK
U P _C S
FLA S H _R ES ET
V R EF
C P _C S R O M 2E N
C LK 32K
R TC A LA R M
B P _V F
JA C K _IN
D EB U G _D S R
R S T
C P _TC K
A (21)
D EB U G _D TR
D EB U G _R TS
IR D A _EN
LC D _B A C K LIG H T_C O N TR O L
U P _S D I
C P _TD O
R S T
S D S _R X D
S IM D A T A
S IM C LK
C H G _O N
D EB U G _R I
D S P _IO
D S P _R W N
D S P _IN T
R S T
C LK 13M _TR
D LC _D ETEC T
C P _W EN
C P _O E N
D EB U G _D C D
U P P ER _B YTE
YM U _IR Q
IR D A _TX
S IM R S T
P W R _K EEP
D EB U G _TX D
D EB U G _C TS
K EY_B A C K LIG H T_E N
S D S _TX D
C P _IN T
IR D A _R X
D EB U G _R X D
D S P _A B (6)
D S P _A B (5)
D S P _A B (4)
D S P _A B (3)
D S P _A B (2)
D S P _A B (1)
D S P _A B (0)
K EY_R O W (4)
D S P _A B (8)
YM U _EN
A (22)
C P _C S R O M E N
C P _C S R A M E N
LC D _S EL
A (3)
A (2)
A (1)
A (0)
K EY_R O W (0:4)
K EY_R O W (3)
K EY_R O W (2)
K EY_R O W (1)
K EY_R O W (0)
K EY_C O L(0:4)
K EY_C O L(4)
K EY_C O L(3)
K EY_C O L(2)
K EY_C O L(1)
K EY_C O L(0)
D S P _A B (8:0)
D S P _A B (7)
A (19)
A (18)
A (17)
A (16)
A (15)
A (14)
A (13)
A (12)
A (11)
A (10)
A (9)
A (8)
A (7)
A (6)
A (5)
A (4)
D (13)
D (12)
D (11)
D (10)
D (9)
D (8)
D (7)
D (6)
D (5)
D (4)
D (3)
D (2)
D (1)
D (0)
A (0:20)
A (20)
D S P _D B (3)
D S P _D B (4)
D S P _D B (5)
D S P _D B (6)
D S P _D B (7)
D S P _D B (8)
D S P _D B (9)
D S P _D B (10)
D S P _D B (11)
D S P _D B (12)
D S P _D B (13)
D S P _D B (14)
D S P _D B (15)
D (0:15)
D (15)
D (14)
C P _C S R A M E N
A (0)
U P P ER _B YTE
D S P _D B (15:0 )
D S P _D B (0)
D S P _D B (1)
D S P _D B (2)
D (4)
D (3)
D (2)
D (1)
D (0)
A (22)
A (1 )
M EM _R S T
R S T
FLA S H _R ES ET
C P _C S R O M E N
C P _C S R O M 2EN
M EM _R S T
C P _O EN
C P _W EN
A (6 )
A (5 )
A (4 )
A (3 )
A (2 )
D (0:15 )
D (15 )
D (14 )
D (13 )
D (12 )
D (11 )
D (10 )
D (9)
D (8)
D (7)
D (6)
D (5)
A (1:22)
A (21)
A (20)
A (19)
A (18)
A (17)
A (16)
A (15)
A (14)
A (13)
A (12)
A (11)
A (10)
A (9 )
A (8 )
A (7 )
SAM SU N G Proprietary-C ontents m ay change w ithout notice
3. SGH-X120 Exploded View and its Parts list
3-1
This Document can not be used without Samsung's authorization
1. Cellular phone Exploded View
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH- X120 Exploded view and its Part list
3-2
This Document can not be used without Samsung's authorization
2. Cellular phone Parts list
Location
NO.
Description
SEC CODE
Remark
QLC01
LCD
GH07-00547A
QSP01
SPEAKER
3001-001551
QMO01
MOTOR
GH31-00086A
QMI01
MICROPHONE ASSY
GH30-00136A
QFR01
FRONT COVER
GH75-04428A
QVO01
VOLUME KEY
GH75-04433A
QKP01
KEYPAD
GH75-04432A
QMP01
MAIN PBA
GH92-01798A
QAN02
INTENNA
GH42-00406A
QME01
METAL DOME
GH59-01375A
QRE01
REAR COVER
GH75-04430A
QRF01
RF COVER TAPE
GH74-09282A
QCR04
SCREW
6001-001479
QBA26
BATTERY
GH43-01310A
QSC21
EAR JACK COVER ASSY
GH75-04431A
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 Exploded view and its Part list
3-3
This Document can not be used without Samsung's authorization
3. Test Jig (G H 80-00865A)
3-1. RF Test Cable
(GH39-00182A)
3-2. Test Cable
(GH39-00127A)
3-3. Serial Cable
3-4. Power Supply Cable
3-5. DATA CABLE
(GH39-00159A)
3-6. TA
(GH44-00482A)
SAM SU N G Proprietary-C ontents m ay change w ithout notice
4. SGH-X120 MAIN Electrical Parts List
4-1
This Document can not be used without Samsung's authorization
SEC Code
Design
LOC
2203-000995
C102
2203-005061
C103
2404-001134
C104
2203-000254
C105
2203-002668
C106
2203-000870
C107
2203-000654
C108
2203-002668
C109
2203-000466
C110
2203-000812
C111
2203-000438
C112
2203-000550
C113
2203-000425
C114
2203-000870
C115
2203-005288
C117
2203-005288
C118
2203-000233
C120
2203-006093
C121
2203-006137
C122
2203-000278
C123
2203-000438
C124
2203-000438
C125
2203-000233
C126
2203-000233
C127
2203-000254
C128
2203-000254
C129
2203-000254
C130
2203-005061
C200
2203-001405
C201
2203-000254
C202
2203-000254
C203
2203-000233
C204
2203-005496
C205
2203-000679
C206
2203-000254
C207
2203-000679
C208
SEC Code
Design
LOC
2203-000679
C209
2203-005061
C210
2203-006093
C211
2203-005450
C212
2203-005496
C213
2203-000233
C214
2203-000254
C215
2203-000254
C216
2203-005061
C217
2203-000254
C218
2203-000254
C219
2203-000254
C220
2203-000254
C221
2203-005052
C222
2203-000233
C223
2203-000233
C224
2203-000628
C225
2203-000628
C226
2203-000233
C227
2203-000254
C228
2203-005061
C229
2203-000254
C230
2203-005061
C231
2203-005496
C232
2203-000940
C233
2203-005061
C234
2203-005480
C235
2203-000812
C300
2203-000812
C301
2203-000812
C302
2203-005482
C303
2203-005061
C304
2203-005061
C305
2203-006201
C306
2203-005796
C307
2203-006201
C308
SEC Code
Design
LOC
2404-001268
C309
2404-001268
C310
2203-001652
C311
2203-006201
C312
2203-006201
C313
2203-006201
C314
2203-000233
C315
2404-001268
C316
2404-001268
C317
2203-005065
C318
2203-005061
C319
2203-000812
C320
2203-000254
C321
2203-006053
C322
2203-006090
C323
2203-006053
C324
2203-006053
C325
2203-005482
C326
2203-000233
C327
2203-005148
C328
2203-000812
C329
2203-005482
C330
2404-001105
C401
2404-001299
C402
2404-001299
C403
2203-000585
C404
2203-001598
C405
2203-005482
C406
2203-001598
C407
2203-000438
C408
2203-000812
C409
2203-005061
C410
2203-001598
C415
2203-000654
C416
2404-001086
C417
2203-005061
C418
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 Electrical Parts List
4-2
This Document can not be used without Samsung's authorization
SEC Code
Design
LOC
2203-001405
C419
2203-000812
C420
2203-000812
C421
2203-000854
C424
2203-005494
C425
2203-000854
C429
2203-005061
C430
2404-001086
C431
2203-005061
C432
2203-000438
C433
2203-006093
C434
2203-000438
C435
2203-000854
C437
2203-001259
C438
2203-000854
C439
2203-000812
C440
2404-001151
C441
2404-001151
C442
2203-006257
C443
2203-005065
C444
2404-001151
C445
2203-002525
C446
2203-000812
C447
2203-005503
C448
2203-000812
C449
2203-000854
C450
2203-000854
C451
2203-001239
C452
2203-000438
C453
2203-000438
C454
2203-000812
C455
2203-000438
C456
2203-001221
C457
2203-000812
C458
2203-000812
C459
2203-000812
C460
SEC Code
Design
LOC
2203-000812
C461
2203-000812
C462
2203-000812
C463
2203-000812
C464
2203-000812
C465
2203-000812
C466
2203-000812
C467
2203-000812
C468
2203-000812
C469
2203-000812
C470
2203-000812
C471
2203-000812
C472
2203-000812
C473
2404-001151
C476
2203-006257
C477
3709-001187
CN300
3710-002034
CN301
3710-001436
CN302
3722-002067
CN401
3705-001287
CON101
2007-000029
D300
0404-001172
D400
2007-000171
E336
2007-001311
ER202
2901-001271
F400
2703-001751
L100
2703-001257
L102
2703-002415
L103
3301-001105
L104
2703-002269
L105
2703-002524
L400
2703-002313
L401
2703-002313
L402
2703-002313
L403
2703-002313
L404
0601-001823
LED200
SEC Code
Design
LOC
0601-001823
LED201
0604-001261
LED300
0601-001897
LED301
0601-001897
LED302
0601-001897
LED303
0601-001819
LED304
0601-001819
LED305
0601-001897
LED306
0601-001897
LED307
0601-001897
LED308
0601-001897
LED309
0601-001897
LED310
0601-001897
LED311
0601-001897
LED312
4302-001130
M1
2809-001260
OSC100
2801-003747
OSC200
0504-001162
Q200
0504-001012
Q201
0504-001042
Q202
0504-001042
Q203
0504-001113
Q300
0502-001201
Q301
0504-001113
Q302
0506-001052
Q303
0504-001012
Q400
0501-000225
Q401
2007-000070
R100
2007-000172
R101
2007-001316
R102
2007-001316
R103
2007-002965
R104
2007-000139
R105
2007-001311
R106
2007-000162
R107
2007-000171
R108
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 Electrical Parts List
4-3
This Document can not be used without Samsung's authorization
SEC Code
Design
LOC
2007-000172
R109
2007-000148
R110
2007-000242
R111
2007-002797
R112
2007-000148
R113
2007-000138
R114
2007-000144
R200
2007-000157
R201
2007-000157
R201
2007-001311
R203
2007-000932
R204
2007-001311
R205
2007-001311
R206
2007-000932
R207
2007-000171
R208
2007-000162
R213
2007-007200
R214
2007-007200
R215
2007-000170
R216
2007-000157
R217
2007-000162
R218
2007-000162
R219
2007-007142
R220
2007-007573
R221
2007-007573
R223
2007-007139
R224
2007-000162
R226
2007-000171
R227
2007-000171
R229
2007-000157
R300
2007-000157
R301
2007-000157
R302
2007-000157
R303
2007-000140
R304
2007-000140
R305
2007-000140
R306
SEC Code
Design
LOC
2007-000140
R307
2007-000140
R308
2007-000167
R309
2007-000140
R310
2007-000140
R311
2007-000140
R312
2007-000140
R313
2007-000140
R314
2007-000140
R315
2007-000758
R316
2007-000140
R317
2007-001319
R318
2007-007142
R319
2007-001291
R320
2007-000171
R321
2007-007142
R322
2007-007139
R323
2007-008263
R324
2007-000171
R325
2007-000171
R326
2007-000171
R327
2007-000171
R329
2007-000171
R333
2007-000171
R334
2007-000171
R335
2007-000171
R336
2007-000171
R337
2007-007008
R338
2007-007008
R339
2007-007008
R340
2007-007008
R341
2007-007008
R342
2007-007008
R343
2007-007008
R344
2007-007008
R345
2007-007008
R346
SEC Code
Design
LOC
2007-007008
R347
2007-007008
R348
2007-007008
R349
2007-000171
R350
2007-000162
R354
2007-000171
R356
2007-007197
R400
2007-007480
R401
2007-007131
R402
2007-007861
R403
2007-000171
R404
2007-000172
R405
2007-007489
R406
2007-000172
R407
2007-000775
R408
2007-000775
R411
2007-001325
R414
2007-000148
R415
2007-007590
R416
2007-001319
R417
2007-000171
R418
2007-000162
R419
2007-000143
R420
2007-000143
R421
2007-000148
R422
2007-000171
R423
2007-007861
R426
2007-000171
R427
2007-007590
R428
2007-000140
R429
2007-000140
R430
2007-000140
R431
2007-007014
R433
2007-000171
R437
2007-001319
R440
3404-001152
SW1
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 Electrical Parts List
4-4
This Document can not be used without Samsung's authorization
SEC Code
Design
LOC
3404-001152
SW2
2909-001193
U100
1201-001954
U101
2904-001514
U102
1205-002433
U103
2904-001520
U104
0801-000306
U105
1204-001984
U200
GH09-00025A U201
1209-001219
U202
1109-001281
U203
1203-002902
U300
1203-002127
U301
1203-002860
U302
1203-002940
U400
1001-001183
U401
1204-002138
U402
0406-001169
ZD301
0406-001169
ZD302
0406-001169
ZD303
0407-000115
ZD306
1405-001082
ZD307
1405-001082
ZD308
1405-001082
ZD309
1405-001082
ZD310
1405-001082
ZD311
1405-001082
ZD312
1405-001082
ZD313
1405-001082
ZD314
1405-001082
ZD315
1405-001082
ZD316
1405-001082
ZD317
1405-001082
ZD318
0406-001169
ZD319
1405-001082
ZD320
1405-001082
ZD321
SEC Code
Design
LOC
0403-001427
ZD322
1405-001082
ZD400
1405-001082
ZD401
0403-001518
ZD402
0403-001518
ZD403
0403-001518
ZD404
0406-001169
ZD405
1405-001082
ZD406
1405-001082
ZD407
1405-001082
ZD408
1405-001082
ZD409
SAM SU N G Proprietary-C ontents m ay change w ithout notice
5. SGH-X120 Block Diagram
5-1
This Document can not be used without Samsung's authorization
V_BAT
JIG_ON
TA_VEXT
I/F
Antenna
Drivers
PSC2106
Charger
Multi-Function
CHG Block
DEBUG
CON
SIM_RST
LTC1734
SDS
2V8_RF
Power
Power
SIM
V_SIM
SIM SIM_CLK
18PIN
Contractor
Mgnt
Supply
Driver
SIM_RST
CON
SIM_Data
CHG_DET
V_PAC
SIM_CLK
VREF
CHG_ON
SIM_Data
I_CHG
DLC_DET
V RT C
1 V 8 Cor e
Crystal
2V 8 D G
32.768 KHz
RF _P ower _EN
PW R_ KEEP
Power I/F
Power
RTC
LNA
RF-BB
A[0:8]
KEY
DCS
IN
I/F
DSP
D[0:15]
DSP
KB _ CO L[ 0:4 ]
Control
Memory I/F
Trident Ⅱ
Keypad
K B _ RO W [0 :4 ]
PAD
GSM
Serial
SER_CTL
I/F
Control
Core
System
Memory I/F
RF
Clock
ASM
TXI_I/O
SHS-C090DR
TXQ_I/O
I/F
CSP1093
A[1:23]
Control
RF Tranceiver
AFC
Mixed Signal
D[0:15]
SI 420 5
V_BAT
256Mbit
GSM
Flash Memory
OLED
PAM
Power
RF-IF
RF3140
AMP I/F
Synthesizer
38F3350WWZD
PM12FF005A
DCS
RF Block
Audio
Enable
DAI
I/F
64Mbit SRAM
P_CTL
TX_EN 2
RF_EN
CLK13M_TR
V_BOOST
TX_BAND_SEL
BOOST Block
SW_EN
LM2733XMFX
3
C LK1 3M_ MC
SPK
TX_PWR
MIC
CLK13M_RF
CLK13M_YMU
Sound Generator
MIC-SPK
OSC
YMU 765
Ear-Jack
V_BAT
13MHz
V_BAT
Analog Switch
MAX4684
SAM SU N G Proprietary-C ontents m ay change w ithout notice
This Document can not be used without Samsung's authorization
6. SGH-X120 PCB Diagrams
6-1
1. Main Top Diagram
C 100
C
1
0
1
C
1
0
2
C
1
0
3
C
1
0
4
C 105
C 106
C
1
0
7
C 108
C
1
0
9
C
1
1
0
C 111
C 112
C 113
C 114
C
1
1
5
C 116
C
1
1
7
C
1
1
8
C 119
C 120
C 121C 122
C
1
2
3
C
1
2
4
C
1
2
5
C 126
C 127
C 128
C 129
C
1
3
0
C 131
C
2
0
0
C
2
0
1
C
2
0
2
C
2
0
3
C 204
C
2
0
5
C 206
C
2
0
7
C
2
0
8
C
2
0
9
C 210
C
2
1
1
C
2
1
2
C 213
C
2
1
4
C 215
C 216
C 217
C 218
C 219
C 220
C 221
C 222
C
2
2
3
C
2
2
4
C 225
C
2
2
6
C
2
2
7
C
2
2
8
C 229
C 230
C
2
3
1
C 232
C
2
3
3
C
2
3
4
C
2
3
5
C
3
0
0
C
3
0
1
C
3
0
2
C
3
0
3
C
3
0
4
C 305
C
3
0
6
C
3
0
7
C
3
0
8
C
3
0
9
C
3
1
0
C
3
1
1
C
3
1
2
C
3
1
3
C
3
1
4
C
3
1
5
C 316
C
3
1
7
C
3
1
8
C
3
1
9
C
3
2
0
C
3
2
1
C 322
C 323
C
3
2
4
C
3
2
5
C 326
C 327
C
3
2
8
C 329
C
3
3
0
C 401
C
4
0
2
C
4
0
3
C
4
0
4
C 405
C 406
C 407
C 408
C 409
C 410
C 415
C
4
1
6
C
4
1
7
C
4
1
8
C
4
1
9
C
4
2
0
C
4
2
1
C 424
C 425
C 429
C 430
C
4
3
1
C 432
C 433
C
4
3
4
C
4
3
5
C
4
3
6
C
4
3
7
C
4
3
8
C
4
3
9
C
4
4
0
C 441
C 442
C
4
4
3
C
4
4
4
C 445
C 446
C 447
C 448
C
4
4
9
C
4
5
0
C
4
5
1
C
4
5
2
C
4
5
3
C
4
5
4
C 455
C
4
5
6
C
4
5
7
C
4
7
6
C
4
7
7
C
N
1
0
0
C N 300
C
N
3
0
1
C
N
3
0
2
C N 401
C
O
N
1
0
1
C
S
R
A
M
E
N
C
SR
O
M
2
E
N
C
S
R
O
M
E
N
D
4
0
0
F
4
0
0
H
1
H
2
H
3
H
4
L
1
0
0
L102
L103
L
1
0
4
L105
L400
L
4
0
1
L
4
0
2
L
4
0
3
L
4
0
4
L
E
D
3
0
0
M
1
O
S
C
1
0
0
O S C 200
Q 200Q 201
Q
2
0
2
Q
2
0
3
Q
3
0
0
Q 301
Q
3
0
2
Q 303
Q 400
Q
4
0
1
R 100
R 101
R 102
R 103
R 104
R 105
R 106
R 107
R
1
0
8
R
1
0
9
R 110
R
1
1
1
R 112
R 113
R
1
1
4
R 200
R
2
0
1
R 208
R 209
R 210
R 211
R 212
R
2
1
3 R 214
R 215
R 216
R
2
1
7
R 218
R
2
1
9
R
2
2
0
R
2
2
1
R
2
2
2
R
2
2
3
R
2
2
4
R
2
2
5
R
2
2
6
R
2
2
7
R
2
2
8
R
2
2
9
R 300
R 301
R 302
R 303
R 304
R 305
R 306
R 307
R 308
R
3
0
9
R 310
R 311
R 312
R 313
R 314
R 315
R 316
R 317
R 318
R
3
1
9
R
3
2
0
R
3
2
1
R 322
R 323
R 324
R 354
R
3
5
5
R
3
5
6
R
3
5
7
R 400
R
4
0
1
R
4
0
2
R
4
0
3
R 404
R 405
R
4
0
6
R 407
R 408
R 411
R 414
R
4
1
5
R
4
1
6
R
4
1
7
R
4
1
8
R 419
R
4
2
0
R
4
2
1
R
4
2
2
R 423
R
4
2
4
R
4
2
5
R
4
2
6
R
4
2
7
R 428
R 429
R
4
3
0
R
4
3
1
R
4
3
2
R 433
R
4
3
4
R
4
3
5
R
4
3
7
R
4
4
0
SW 1
S W 2
U
1
0
0
U 101
U 102
U
1
0
3
U 104
U 105
U 200
U
2
0
1
U 202
U 203
U 300
U 301
U
3
0
2
U
4
0
0
U
4
0
1
U
4
0
2
Z D 301
Z D 302
Z D 303
ZD 306
Z
D
3
1
2
Z D 319
Z D 322
ZD 400
ZD 401
Z D 402
Z D 403
Z D 404
Z D 405
ZD 406
Z
D
4
0
7
ZD 408
ZD 409
SAM SU N G Proprietary-C ontents m ay change w ithout notice
SGH-X120 PCB Diagrams
6-2
This Document can not be used without Samsung's authorization
2. Main Bottom Diagram
*
0
1
2
3
4
5
6
7
8
9
C4
58
C4
59
C4
60
C4
61
C4
62
C4
63
C4
64
C4
65
C4
66
C4
67
C4
68
C4
69
C4
70
C4
71
C4
72
C4
73
C
L
E
A
R
C
N
4
0
0
C
P
_
T
C
K
C
P
_
T
D
I
C
P
_
T
D
O
C
P
_
T
M
S
D
O
W
N
D
S
P
_
T
C
K
D
S
P
_
T
D
I
D
S
P
_
T
D
O
D
S
P
_
T
M
S
F
_
W
E
_
1
G
N
D
_
1
I
L
E
D
2
0
0
L
E
D
2
0
1
L
E
D
3
0
1
LE
D3
02
LE
D3
03
L
E
D
3
0
4
L
E
D
3
0
5
LE
D3
06
LE
D3
07
LE
D3
08
LE
D3
09
LE
D3
10
LE
D3
11
L
E
D
3
1
2
LE
FT
M
E
N
U
M
I
C
_
M
M
I
C
_
P
P
W
R
R2
02
R2
03
R2
04
R2
05
R2
06
R2
07
R
3
2
5
R
3
2
6
R
3
2
7
R
3
2
9
R
3
3
3
R
3
3
4
R
3
3
5
R
3
3
6
R
3
3
7
R
3
3
8
R3
39
R3
40
R3
41
R
3
4
2
R
3
4
3
R3
44
R3
45
R3
46
R3
47
R3
48
R
3
4
9
R
3
5
0
RI
GH
T
R
S
T
S
E
N
D
S
H
A
R
P
S
P
K
4
0
0
S
T
O
U
P
Z
D
3
0
7
Z
D
3
0
8
Z
D
3
0
9
Z
D
3
1
0
Z
D
3
1
1
Z
D
3
1
3
Z
D
3
1
4
Z
D
3
1
5
Z
D
3
1
6
Z
D
3
1
7
Z
D
3
1
8
Z
D
3
2
0
Z
D
3
2
1
Samsung Electronics Co.,Ltd. Oct. 2004
Printed in Korea.
Code No.: GH68-05516A
BASIC.
ⓒ
This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
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