Samsung SGH-X200 Service Manual
GSM TELEPHONE
SGH-X200
GSM TELEPHONE
CONTENTS
1. Specification
2. Flow Chart of Troubleshooting
3. Exploded Views and Parts List
4. Electrical Parts List
5. PCB Diagrams
6. Block Diagrams
1. SGH-X200 Specification
1-1. GSM General Specification
GSM900
Phase 1
Freq. Band[MHz]
Uplink/Downlink
ARFCN range 1~124
Tx/Rx spacing 45MHz 45MHz 95MHz 80MHz
Mod. Bit rate/
Bit Period
Time Slot
Period/Frame
Period
Modulation 0.3GMSK 0.3GMSK 0.3GMSK 0.3GMSK
MS Power 33dBm~13dBm 33dBm~5dBm 30dBm~0dBm 30dBm~0dBm
890~915
935~960
270.833kbps
3.692us
576.9us
4.615ms
EGSM 900
Phase 2
880~915
925~960
0~124 &
975~1023
270.833kbps
3.692us
576.9us
4.615ms
DCS1800
Phase 1
1710~1785
1805~1880
512~885 512~810
270.833kbps
3.692us
576.9us
4.615ms
PCS1900
1850~1910
1930~1990
270.833kbps
3.692us
576.9us
4.615ms
Power Class 5 p cl ~ 1 5 p cl 5pcl ~ 19pcl 0pcl ~ 15pcl 0pcl ~ 15pcl
Sensitivity -102dBm -102dBm -100dBm -100dBm
TDMA Mux 8 8 8 8
Cell Radius 35Km 35Km 2Km -
1-2
SGH-X200 Speclflcation
1-2. GSM Tx Power Class
TX Power
control level
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
GSM900
TX Power
control level
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
DCS1800
TX Power
control level
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
PCS1900
15 0±5 dBm
1-2
15 0±5 dBm
2. SGH-X200
1. Baseband
2-
2-1-1. Power ON
'Power ON' does not work
Flow Chart of Troubleshooting
check the current
consumption
>= 100mA
Yes
Check the Voltage
of the Battery
>= 3.3V
Yes
Check the pin C152,
C153,C155,C168 of
U107 is
>=2.8V
Yes
Checktheclocksignalat
pin #4 of OSC100
Freq=26Mhz,
Vrms >=300mV
No
No
No
No
Download again
Charge the battery
Check
"Power On"
key?
Check the clock generation
circuit OSC100
Yes
No
check keypad
1
check U107 and C153
2
Yes
Check the Initial Operation
Yes
END
2-19
SGH -X2 00 Flow Chart of Troubl eshooting
DSP_DB(0:15)
DSP_DB(15)
DSP_DB(14)
DSP_DB(13)
DSP_DB(12)
DSP_DB(11)
DSP_DB(10)
DSP_DB(9)
DSP_DB(8)
VCCA_2.9V
VCCD_2.9VVRF_2.9V
VBAT
C152 C153
0
0
1
8
9
1
K
2
1
J
J
J
7
6
5
4
5
6
1
1
1
1
C
C
S
S
S
S
N
N
D
D
D
D
N
N
N
N
G
G
G
D2
DB15
D3
DB14
E3
DB13
E2
DB12
F3
DB11
F2
DB10
F1
DB9
F4
DB8
G
0
8
9
1
6
7
8
9
7
J
3
1
S
D
N
G
G
H
G
H
H
H
2
1
S
D
N
G
G
6
7
9
8
0
1
1
1
S
S
S
S
S
S
D
D
D
D
D
D
N
N
N
N
N
N
G
G
G
G
G
G
3
0
7
1
G
F
4
5
S
S
D
D
N
N
G
G
4
1
8
9
7
F
F
F
B
D
3
2
3
1
L
S
S
T
S
C
D
D
C
D
D
N
N
N
O
A
_
_
G
G
G
X
D
U
N
A
G
0
1
3
1
1
5
6
4
6
4
1
1
L
P
C
L
V
V
T
D
D
C
N
D
O
V
G
_
D
D
V
2
1
6
N
A
F
M
D
B
B
D
D
D
D
D
D
D
N
N
V
V
G
G
5
6
4
J
G
N
K
R
N
P
1
2
3
1
4
2
S
S
S
S
O
O
I
I
S
S
S
S
_
_
V
V
V
V
D
D
D
D
V
V
C155
5
3
0
5
1
3
1
1
1
1
8
1
3
F
E
K
C
B
J
B
M
2
5
3
2
D
D
D
D
V
V
7
1
1
R
Q
6
C
C
D
D
V
D
U
D
S
S
C
N
P
P
H
G
_
_
_
D
D
D
N
N
N
G
G
G
D
D
V
VDD34
D
V
VDD12
UP_CLK
UP_RST
UP_IO
SIM_IO
SIM_RST
SIM_CLK
C11
J13
N9
R10
P10
J11
K11
K14
C162
SIMCLK
SIMRST
SIMDATA
SIM_IO
SIM_RST
SIM_CLK
1
2
2-2
2-1-2. Initial
SGH-X200 Flow Chart of Troubleshooting
Initial Failure
check the pin
RSTB of U201 is
LOW?
Yes
check the pin CKI
of U201 is 13Mhz?
Yes
Check the clock signal
at pin #3 of OSC100
Freq=26Mhz?
Yes
Check the pin #9 of U102
is HIGH and pin #11,
#13 is 2.9V?
No
Check U201
No
R177,R178,R131,C127
No
No
check OSC100
Check u107
Check
1
2
3
4
Yes
Check the Initial Operation
Yes
END
2-3
SGH -X2 00 Flow Chart of Troubleshooting
13M_OUT
VCCD_1.8V
7
6
6
1
1
5
1
R
R
A
C
D
D
D
D
D
D
D
D
V
V
V
V
3
1
T
4
R
D
D
D
D
V
V
VCCD_2.9V
1
1
2
R
G
E
D
D
D
D
D
D
V
V
V
7
1
F
VRTC_3VVCCD_1.8V
C203
2
1
C
I
K
C
C129
B
T
S
R
TDO
TRST
TMS
TCK
TDI
C127
F12
F15
H12
G12
H13
G15
L12
C202
CLK13M_TR
CLK13M_MC
CLK13M_YMU
VREF
CLK13M_TR
TR_RST
TR_RST
R131
R177
R133
R178
VCCD_2.9V
C201
C200
6
5
6
4
6
7
1
1
1
1
B
E
D
D
V
8
1
1
P
U
U
E
N
E
E
E
E
E
E
E
D
D
D
D
D
D
D
D
D
D
D
D
V
V
V
V
V
V
6
1
5
0
0
1
1
1
G
E
L
L
P
D
_
S
S
V
1
1
1
E
F
C
L
F
A
L
E
S
P
R
S
D
V
V
_
X
D
D
V
CKO/IACK/ERAMHI
8
D
C
A
T
D
R
D
V
V
2
1
M
U
B
E
E
E
D
D
D
D
D
D
V
V
V
4
3
2
1
2-4
2-1-3. Sim Part
"Insert SIM" is displayed on the LCD
SGH-X200 Flow Chart of Troubleshooting
The voltage is 2.8V
at the pin#1 of CN103
Yes
Is there any signal
pin #2,3,4 of CN103?
Yes
Check the SIM Card
END
No
No
Check the U107
Check the U107 & U201
1
2
VSIM
SIM_RST
SIM_CLK
C138 C141C140C139
CN103
D
C
C
K
P
N
C
C
L
C
P
C
V
V
G
C
V
2
1
6
4
3
5
C
C
O
/
N
N
I
N
N
0
8
7
9
1
SIM_IO
C142
1
2
2
2-5
SGH -X2 00 Flow Chart of Troubleshooting
2-1-4.Microphone Part
* Call with Sim before testing.
MicroPhone does not work
Yes
Check the soldered
status of microphone
Yes
Check the reference
voltage on mic path
R169≒2.0V
Yes
Is microphone OK?
Yes
END
R168
No
No
Resolder microphone
Resolder or change
R169,C185,R148,R149,R150,R151,
R152,R153,C156,C157,C158,C160,C161
No
Check U107
VCCA_2.9V
R169
1
2
MICINP
MICOUTP
MICINN
MICOUTN
R151
R153
R150
R152
10K
C156
C158
R148
2-6
R149
C157
10PF
50V
C161
C160
MIC+
L107
1
1
2
2
C185
SGH-X200 Flow Chart of Troubleshooting
1
2
1
2-7
SGH -X2 00 Flow Chart of Troubleshooting
2-1-5. Speaker Part
There is no sound from speaker
Check the connection
status of LCD connector
CN201
Yes
Are there any signal at
the speaker pad on LCD
PCB?
No
Check R162, R163 of
U108. Voltage is≥1V?
Yes
END
No
Yes
No
1
reconnect CN201
Replace the speaker module
2
Check U107
2-8
SGH-X200 Flow Chart of Troubleshooting
1
2-9
2
Loading...